20020694 Ver 2_401 Application_20081229

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North Carolina Wildlife Resources Commission

Gordon S. Myers, Executive Director

MEMORANDUM

TO:

Monte Mathews, USACE
Cyndi Karoly, NCDWQ
Sue Homewood, NCDWQ

~~@[gOW~OO

DEe 2 9 2008

FROM:

Mark Fowlkes, NCWRC

DaIlt - WATERCUAl,llY
WETLANDS AND STORMWATER BRANCH

DATE: December 19,2008

SUBJECT: NW 3 and 27 permit application for: Little Bugaboo Creek stream mitigation site,
stream maintenance and enhancement project, Wilkes County, North Carolina.

The North Carolina Wildlife Resources Commission is submitting the enclosed permit
application and plans for 200 linear feet of stream maintenance on Little Bugaboo Creek and 285
linear feet of stream enhancement on an unnamed tributary to Little Bugaboo Creek in Wilkes
County. A culvert at the lower end of the stream enhancement project will be replaced as an
agricultural BMP. Therefore it is not included as part of this permit's application.

The $570.00 Pre-Construction Notification Application fee required by NCDWQ has been
electronically transferred (electronic warrant # 0000035083, see enclosed). The confirmation of
the funds transfer is enclosed. Also enclosed find the NCWRC's stream maintenance and
enhancement plan, the NCEEP's authorization letter, and permits obtained in 2002 for the
original stream restoration at this site.

The brook floater (Alasmidonta varicosa) mussel, a federal species of concern and a state
endangered species; was documented approximately 8 miles downstream of the project location
in the mainstem Yadkin River below the town of Ronda, NC in 2007. This species inhabits
medium-size streams and rivers. It prefers clean, swift waters with stable gravel, or sand and
gravel substrates. The status of the brook floater is unknown in the Little Bugaboo Creek
drainage. It is unlikely that it would be found within the project's reach, due to the poor habitat
found along Little Bugaboo Creek and the unnamed tributary. Both stream channels are
composed mostly of silts and sands; there are very few clean gravels for the brook floater to
inhabit. Both the NCWRC and U.S. Fish and Wildlife Service have been notified about our
concerns with the brook floater and the proposed stream maintenance and enhancement to Little

Mailing Address: Division ofInland Fisheries · 1721 Mail Service Center · Raleigh, NC 27699-1721
Telephone: [phone] · Fax: [phone]

2

Bugaboo Creek and the unnamed tributary. We have notified them that we plan to conduct a
mussel survey within the project reach prior to construction. If mussels are found they will be
moved out of the project reach before work begins. Conversations with USFWS and NCWRC
personnel have determined that a "no effect" determination is appropriate for this project (see
enclosed email).

Note: A copy of the permit application for this project has been sent to Ms. Sue Homewood,
NCDWQ Winston-Salem Regional Office, to expedite the application process.

If you have any questions regarding this application please contact me at 336-527-1547 or 336-
466-0541 or by email [e-mail]. Thank you for reviewing this plan in a
timely manner.

CC: Jim Borawa, NCWRC

Mark Fowlkes

From:
Sent:
To:
Cc:
Subject:

Ron Linville [[e-mail]]
Wednesday. November 26, 2008 8:31 AM
'Mark Fowlkes'; 'Monte Matthews (USACE)'; 'Jim Wasseen '
'James C. Borawa'
RE: Little Bugaboo Stream mitigation site repair project

I feel very comfortable with Marella's call on this project.

-----Original Message-----
From: Mark Fowlkes [mailto:[e-mail]]
Sent: Tuesday, November 25,20083:12 PM
To: Monte Matthews (USACE); 'Jim Wasseen '
Cc: 'James C. Borawa'; Linville, J.Ron WRC-HC
Subject: Little Bugaboo Stream mitigation site repair project

Jim, Monte - I spoke with Marella (USFWS - Asheville office) yesterday about the brook floater Alasmidonta
varicosa - state endangered, federal species of concern freshwater mussel being found approximately 9 miles
downstream of the Little Bugaboo stream mitigation site. Apparently she had visited the mitigation site
sometime in the past and remembered the poor condition of the stream and riparian area due to agricultural
practices. She recommended WRC make a call of no effect because of the poor habitat conditions, small size of
the stream, and distance to know occurrence and not worry about getting comments from USFWS. The brook
floater prefers medium to large systems with gravel/cobble substrate. We clearly do not have these conditions
at the mitigation site.

Even with a call of no effect, I plan to do a quick mussel survey in the proposed repair area of Little Bugaboo
Creek prior to construction. Any mussel found will be moved upstream of the repair area. This information will
be included in the PCN. Hopefully it will be submitted within the next couple of weeks.

Let me know if you have any questions. Thank you.

Mark Fowlkes
Habitat Conservation Program
NC Wildlife Resources Commission
P. O. Box 387
Elkin, NC 28621
336/527-1547
336/527-1548 FAX
[e-mail]
www.ncwildlife.org

1

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Dee 16, 2008
OCP AP

8:50:47 AM
DOCUMENT PAYMENT GENERAL INFORMATION

DPG

NEXT FUNCTION:
BROWSE:

ACTION:

HISTORY:

12/16/2008 08:50:41

==============================================================================;

PAY ENTITY
VEND/EMP SHORT
DOCUMENT DATE

17PT
NAME: DENR
: 12/12/2008
IND AMOUNT

SALES TAX/VAT
SALES TAX 2
SALES TAX 3
FREIGHT
ADDITIONAL COST

GROSS INVOICE
PAYMENT AMOUNT
AMOUNT PAID

570.00
570.00
570.00

PAYMENT TERMS
PAYMENT DATE
PAYMENT ROUTE CD
FACTOR NUMBER
REASON CODE/DESC

NET PAY IMMEDIATELY
12/15/2008

VEND/EMP NBR:
DOCUMENT NBR:
PAYMENT NBR:

566000372 40
121208
001 PRTL PYMT NBR: 000

VAT INCLUSIVE N
EXPENSE IND
GL EFFECTIVE DATE: 12/15/2008
EXTRACT DATE
ACCRUAL CANC DATE:

CURRENCY CODE
DISCOUNT TYPE
DISCOUNT TAKEN
PAYMENT STATUS
PAYMENT REF NBR
PAYMENT TYPE
HANDLING CODE
ONE INVC PER PYMT:
BANK ACCT PYMT CD:

NOT TAKEN

.00

PAID
0000035083
ELECTRONIC

IGO

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Dee 16, 2008
OCP AP

8:50:40 AM

DOCUMENT GENERAL INFORMATION

NEXT FUNCTION:

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HISTORY:

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PAY ENTITY 17PT
VEND/EMP SHORT NAME: DENR
DOCUMENT DATE 12/12/2008

CONTROL NUMBER
DOCUMENT TYPE
DOCUMENT STATUS
r.nRRENCY CODE
GROSS DOC AMOUNT

0574
INVOICE
PD-FULL

AMOUNT PAID
COUNTY CDE/TRIP NBR:
PO REFERENCE

SIGN APPROVAL CODE
DATES APPROVED

570.00

570.00

VENDOR/EMP NUMBER:
DOCUMENT NUMBER

CONTROL DATE
APPLICATION AREA
DATE ENTERED
DATE LAST UPDATED:
PROV ACCTG DATE

566000372 40
121208

12/12/2008
LM
12/15/2008
12/15/2008

REMIT MESSAGE:

121208 401 CERT WRC LITTLE BUGABOO CRK MITIGATION SITE

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Office Use Only:

Form Version March 05

USACE Action In No. DWQ No. OJ.. - D lo q tt V 2-
(Ifany particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)

I.

Processing

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1. Check all of the approval(s) requested for this project:
fZI Section 404 Permit 0 Riparian or Watershed Buffer Rules
o Section 10 Permit 0 Isolated Wetland Permit from DWQ
fZI 401 Water Quality Certification 0 Express 401 Water Quality Certification

2. Nationwide, Regional or General Permit Number(s) Requested: Nationwide 3 and 27

3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: 0

4. If payment into the North Carolina Ecosystem Enhancement Program (NCEEP) is proposed
for mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII,
and check here: 0

5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: 0

II. Applicant Information

1. Owner/Applicant Information
Name: North Carolina Ecosvstem Enhancement Pro2ram
Mailing Address: 1652 Mail Service Center. Ralei2h. NC 27699-1652

Telephone Number [phone] Fax Number: [phone]
E-mail Address:Gre2orv.Melia~ncmail.net

2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name: Mark Fowlkes
Company Affiliation: North Carolina Wildlife Resources Commission
Mailing Address: P.O. Box 387
Elkin. NC 28621

Telephone Number: [phone] Fax Number: [phone]
E-mail Address:Markfowlkes~earthlink.net

Updated 11/112005

Page 1 of 10

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III. Project Information

Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by I7-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.

1. Name of project: Little But!aboo Creek Mitit!ation site

2. T.I.P. Project Number or State Project Number (NCDOT Only):

3. Property Identification Number (Tax PIN): 4911-44-4446

4. Location
County: Wilkes Nearest Town: Ronda
Subdivision name (include phase/lot number): N/A
Directions to site (include road numbers/names, landmarks, etc.): Please see attached
document. Fit!ure 1. for detailed directions to the site.

5. Site coordinates (For linear projects, such as a road or utility line, attach a sheet that
separately lists the coordinates for each crossing of a distinct waterbody.)
Decimal Degrees (6 digits minimum): 36.247699 <N 80.9849821 ow

6. Property size (acres): 28.38 acres

7. Name of nearest receiving body of water: Bit! But!aboo Creek. Yadkin River

8. River Basin: Yadkin Pee-Dee
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h20.enr.state.nc.us/admin/maps/.)

9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: In 2002-2003. a Priority 2 restoration proiect was planned
and constructed alont! approximately 4.500 liner feet (ID of Little But!aboo Creek
(LBC) and 1.900 If of an unnamed tributarv to LBC at the Woodie farm site in Wilkes

Updated 1l/112005

Page 2 of 10

Countv. SubseQuent monitorin2 of the project site found in-stream channel repairs
were needed alon2 200 If of main stem of LBC (between station 20+00 and station
22+00). The monitorin2 reports also documented low woody stem densities in the
riparian area between stations 23+00 and 37+00 and steep un-ve2etated streambanks
alon2 the main stem of LBC. Supplemental plantin2 of these areas was recommended.
Additional channel improvements outside of the orilrinal miti2ation project were also
identified. These improvements include replacement of an existin2 culvert on a farm
access road as an ae:ricultural BMP. and enhancine: the uppermost 285lf of stream on
an unnamed tributary to LBC roT). Please see attached desi2ll plan for details.

10. Describe the overall project in detail, including the type of equipment to be used: An
excavator eQuipped with a hydraulic thumb. loader. and dump truck will be reQuired
for the comvletion of this project.
Stream Maintenance. Nationwide 3 - A rock or loe: vane will be installed on the left
stream bank at station 20+80 to protect the left streambank. The substrate material
comprisine: the mid-channel bar at station 21+60 will be moved to the left stream bank
and the stream channel reshaped to restore proper channel dimension. A rock cross
vane or weir will be installed at station 21+90 to maintain the e:rade of the rime and to
reduce shear stress at the outer ed2e of the meander bend immediately downstream.
The point bar on the left bank at station 21+90 will be re-shaped to restore proper
stream channel dimension. Disturbed streambanks will be reshaped to 2:1 to 3:1 slopes
and stabilized with coir fiber mattine:. Salvae:ed woody vee:etation and sod mats will be
use to reVe2etate the disturbed stream banks wherever possible. These areas also will be
seeded with a temporary and permanent native riparian seed mix and mulched with
straw. Alon2 the main stem of LBC. two thousand five hundred live stakes will be
planted on stream bank areas with sparse vee:etation. The floodplain between stations
23+00 and 37+00 will be planted with 460 trees and shrubs (288 stems/acre) to aue:ment
existin2 ve2etation.

Stream Enhancement. Nationwide 27 - Fill from the ae:2raded stream channel will be
removed and a channel and bankfull slope of 0.034 ftlft established. Nine rock weirs or
double drop cross vanes will be installed in the stream channel to maintain 2rade
control. reduce the near bank water velocitv and shear stress. and create aQuatic
habitat. Footer rocks will be laced a roximatel 1 ft below the normal stream
bottom. Rock size will vary from 250 pounds (2.5 ) to 1.360 pounds (8.0 Ii ).
Dependine: on the stream channel bed's existine: substrate. e:ravel and cobble may be
added to obtain the desired channel slopes and relative substrate rou2hness.
A 1-2 ft wide bankfull bench will be created on both sides of the stream channel.
Streambanks will be reshaped with slopes of 2:1 to 3:1 and stabilized with coir fiber
mattin2. Constructed riffles will have a desi2n bankfull mean depth of 0.5 ft. bankfull
maximum depth of 0.9 ft. bankfull width of 7.3 ft. and width/depth ratio of 14.2 (Table
1; Fi2ure 13 in the construction plan). Pools will have a mean bankfull depth of 0.62 ft
and a maximum bankfull depth of 1.5 ft (Fi2ure 14). Runs and I!lides will be

Updated 11/1/2005

Page 3 of to

transitional features between rimes and pools. Please see attached desie:n plan for
details.
Culvert Replacement - This action is proposed as an ae:ricultural best manae:ement
practice. To minimize future culvert maintenance requirements. we are proposine: to
replace the existine: 20 foot lone: X 48 inch corrue:ated metal pipe (CMP) with a 30 ft
lone: X 60 inch CMP. Doine: so will not onlv allow the rill slopes of the road to be
stabilized at 1.5:1 slopes and permit the backfill to be machine compacted. but also will
reduce the likelihood of debris iams at the inlet. The side slopes will be stabilized bv
placine: woven filter fabric topped with class B (Min. D~o = 9 in) stone. The CMP will be
buried one foot below the substrate. In order to maintain 2I'8vel within the CMP and
reduce the potential for a head cut. a rock vane will be placed upstream of the CMP
and a rock sill will be placed at the downstream end of the plune:e pool below the
culvert outlet. The lare:er diameter CMP will be able to carrv flows in excess of the 100-
vear storm event and reduce maintenance. The planned stabilization and protection of
the upstream section of this tributarv also will help reduce the quantity of wood v debris
washed downstream durine: storm events. A water line runnine: alone: the road and
over the existine: culvert will need to be capped durine: construction and replaced.
Please see attached desi2l1 plan for details.

11. Explain the purpose of the proposed work: The purpose of this proiect is to repair unstable
areas at the LBC mitie:ation proiect in order to meet the required success criteria as
required bv the re2Ulatorv ae:encies. The stream channel repair work and
supplemental plantine: on the main stem of LBC are required to ensure the lon2-term
stability of the stream channel. Enhancement of the unnamed tributarv and
replacement of the failine: culvert are necessary to reduce sediment inputs to the
existine: proiect.

IV. Prior Project History

If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ill Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules. The 2002-2003 stream mitie:ation was constructed under a USACE
permit. Action ID Number 200220955. The application date was July 15. 2002. and the
permit expired Julv 15. 2004. DWQ proiect number was NCGOI0000. The application
date was October 1. 2001 and expired September 30. 2006. A soil and erosion permit was
obtained from the Division of Land Resources. The permit number was WILKE-2003-009.
the application date was September 25. 2003 and expired on September 25. 2006.

Updated 111112005

Page 4 of to

V. Future Project Plans

Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
No future permit requests are anticipated.

VI. Proposed Impacts to Waters of the United StateslWaters of the State

It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. Each impact must be
listed separately in the tables below (e.g., culvert installation should be listed separately from
riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts,
permanent and temporary, must be listed, and must be labeled and clearly identifiable on an
accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial)
should be shown on a delineation map, whether or not impacts are proposed to these systems.
Wetland and stream evaluation and delineation forms should be included as appropriate.
Photographs may be included at the applicant's discretion. If this proposed impact is strictly for
wetland or stream mitigation, list and describe the impact in Section VIII below. If additional
space is needed for listing or description, please attach a separate sheet.

1. Provide a written description of the proposed impacts: Streambanks will be
stabilized. structures will be installed to maintain the thalwee: in the middle of the
channel and protect the stream banks. and a culvert will be replaced as an ae:ricultural
BMP at the Bue:aboo Creek mitie:ation site. Temporarv off-site sedimentation durine:
construction will be kept to a minimum usine: appropriate erosion and sediment control
measures. disturbed areas will be stabilized at the end of each day. Please see attached
plan for details.

2. Individually list wetland impacts. Types of impacts include, but are not limited to
mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams,
t I r' d both d fl d'

separa ely 1st IIDpacts ueto structure an 00 mg.
Wetland Impact Type of Wetland Located within Distance to Area of
IOO-year Nearest Impact
Site Number Type ofImpact (e.g., forested, marsh, Floodplain Stream (acres)
(indicate on map) herbaceous, bog, etc.) (yes/no) (linear feet)
Total Wetland Impact (acres)

3. List the total acreage (estimated) of all existing wetlands on the property:

Updated 1111/2005

Page 5 of 10

4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary
impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam
construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib
walls, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed,
plans and profiles showing the linear footprint for both the original and relocated streams

must be included. To calculate acreage, multiply length X width, then divide by 43,560.
Stream Impact Perennial or Average Impact Area of
Number Stream Name Type of Impact Intermittent? Stream Width Length Impact
(indicate on map) Before Impact (linear feet) (acres)
1 Little Bugaboo Cr Maintenance Perennial 14.8 200 0.068
2 UT Little Bugaboo Enhancement Perennial 7.3 285 0.048
Total Stream Impact (by length and acreage) 485 0.116

5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the V.S.). Open water impacts include, but are not limited to
fill . dr d' fl di dr' bulkh d

I , excavatIon, e 19m9, 00 ng, amage, ea s, etc.
Open Water Impact Name ofWaterbody Type ofWaterbody Area of
Site Number Type of Impact (lake, pond, estuary, sound, bay, Impact
(indicate on map) (if applicable) ocean, etc.) (acres)
Total Open Water Impact (acres)

6. List th

I f

tt llWt

fth V S

It' fr th

. t

e cumu a lve lmpac oa aerso e . . resu mg om e proJec :
Stream Impact (acres): 0.116
Wetland Impact (acres): 0.0
Open Water Impact (acres): 0.0
Total Impact to Waters of the V.S. (acres) 0.116
Total Stream Impact (linear feet): 485

7. Isolated Waters
Do any isolated waters exist on the property? 0 Y es ~ No
Describe all impacts to isolated waters, and include the type of water (wetland or stream) and
the size of the proposed impact (acres or linear feet). Please note that this section only
applies to waters that have specifically been determined to be isolated by the VSACE.

8. Pond Creation - N/A

Updated 111112005

Page 6 of 10

VII. Impact Justification (Avoidance and Minimization)

Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts. The stream repairs on LBC
and stream enhancement on the unnamed tributary to LBC are beine: funded bv the
NCEEP. and are mitie:ation for previous stream impacts in the area. Proper erosion and
sediment control best manae:ement practices will be used to minimize sediment from
enterine: the stream durine: construction. Please see attached plan for details.

VIII. Mitigation - N/A

DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.

USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on January 15,2002, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.

If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCEEP concurrence shall be placed on hold as incomplete.
An applicant may also choose to review the current guidelines for stream restoration in DWQ's
Draft Technical Guide for Stream Work in North Carolina (see DWQ website for most current
version. ).

1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if off site), affected stream and river basin, type and amount (acreagellinear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.

Updated 11/1/2005

Page 7 of 10

2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement
Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at
[phone] to determine availability, and written approval from the NCEEP indicating
that they are will to accept payment for the mitigation must be attached to this form. For
additional information regarding the application process for the NCEEP, check the NCEEP
website at http://www.nceep.net/pages/inlieureplace.htm. If use of the NCEEP is proposed,
please check the appropriate box on page five and provide the following information:

Amount of stream mitigation requested (linear feet):
Amount of buffer mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Amount of Non-riparian wetland mitigation requested (acres):
Amount of Coastal wetland mitigation requested (acres):

IX. Environmental Documentation (required by DWQ)

1. Does the project involve an expenditure of public (federal/state/local) funds or the use of
public (federal/state) land? Yes ~ No 0

2. If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEP A/SEP A document is required, call the SEP A
coordinator at [phone] to review current thresholds for environmental documentation.
Yes 0 No ~

3. If yes, has the document review been finalized by the State Clearinghouse? If so, please
attach a copy of the NEPA or SEPA final approval letter. Yes 0 No 0

x. Proposed Impacts on Riparian and Watershed ButTers (required by DWQ)

It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.

1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Neuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC

Updated 11/112005

Page 8 of 10

2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please
identify )? Yes 0 No [8]

2. If "yes", identify the square feet and acreage of impact to each zone of the riparian buffers.
If buffer mitigation is required calculate the required amount of mitigation by applying the
buffi If r

er mu IpJ lers.
Zone * Impact Multiplier Required
(square feet) Mitigation
I 3 (2 for Catawba)
2 1.5
Total

* Zone 1 extends out 30 feet perpendicular from the top of the near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.

3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e.,
Donation of Property, Riparian Buffer Restoration / Enhancement, or Payment into the
Riparian Buffer Restoration Fund). Please attach all appropriate information as identified
within 15A NCAC 2B .0242 or .0244, or .0260.

XI. Stormwater (required by DWQ)

Describe impervious acreage (existing and proposed) versus total acreage on the site. Discuss
stormwater controls proposed in order to protect surface waters and wetlands downstream from
the property. If percent impervious surface exceeds 20%, please provide calculations
demonstrating total proposed impervious level. Nt A.

XII. Sewage Disposal (required by DWQ)

Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
N/A

Updated 11/1/2005

Page 9 of to

XIII. Violations (required by DWQ)

Is this site in violation ofDWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules?
Yes D No ~

Is this an after-the-fact permit application? Yes D

No ~

XIV. Cumulative Impacts (required by DWQ)

Will this project (based on past and reasonably anticipated future impacts) result in additional
development, which could impact nearby downstream water quality? Yes D No ~
If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with
the most recent North Carolina Division of Water Quality policy posted on our website at
http://h20.enr.state.nc.us/ncwetlands. If no, please provide a short narrative description: This is
a stream enhancement and stream maintenance proiect. please see attached plan for
details.

XV. Other Circumstances (Optional):

It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).

'9zf'~'U-.., 12- ) Cj - ~ ~
UAPPlicantlAgent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)

Updated 11/112005

Page 10 of 10

O~- D~q'-t v 2

PROPOSED SCOPE OF WORK AND DESIGN PLANS
for

CHANNEL REPAIRS TO AN UNNAMED TRIBUTARY TO
LITTLE BUGABOO CREEK
AND
MAINTENANCE TO THE LITTLE BUGABOO CREEK
MITIGATION SITE, WILKES COUNTY, NORTH CAROLINA

EEP PROJECT NUMBER: 00056

Prepared in Partnership with the
North Carolina Ecosystem Enhancement Program

~~@~ow~w

DEe 2 9 2008

DENR ' WATERQUALllY
WETlANDS AND STORMWATER BRANCH

T

I i
-1' / I! L r,",','~ll,
~ ; l '" It !!

North Carolina Wildlife Resources Commission
Watershed Enhancement Group

December 2008

Introduction

In 2002-2003, a Priority 2 restoration project was planned and constructed along
approximately 4,500 liner feet (If) of Little Bugaboo Creek (LBC) and 1,900 If of an unnamed
tributary to LBC at the Woodie farm site in Wilkes County (Figures I and 2). Subsequent
monitoring of the project site (URS 2007) found in-stream channel repairs were needed along
200 If of main stem of LBC (between stations 20+00 and 22+00). The report also documented
low woody stem densities in the riparian area between stations 23+00 and 37+00 and steep un-
vegetated streambanks along other portions of the main stem of LBC. Supplemental planting of
these areas was recommended (VRS 2007). Additional channel improvements outside of the
original mitigation project were also identified. These improvements include replacement of an
existing culvert on a farm access road and enhancement of the uppermost 315 If of stream on an
unnamed tributary to LBC (VT). The North Carolina Ecosystem Enhancement Program (EEP)
retained the North Carolina Wildlife Resources Commission's Watershed Enhancement Group
(NCWRC) to prepare a plan to repair and enhance these areas. This includes acquiring permits,
managing informal contracts, construction oversight, and providing EEP with an as-built report
documenting the repair and channel improvement work.

Project Team

The team for the project will consist of a biologist and design engineer with full training and
experience in natural channel design techniques and a biological technician with experience in
assisting with most facets of stream restoration projects. They will be responsible for completing
all field work associated with the project. This team will be working from the Elkin field office.

Mark Fowlkes., Watershed Enhancement Coordinator
Jeffrey C. Ferguson, Watershed Enhancement Engineer
James A. Was seen II, Watershed Enhancement Technician

Project oversight, quality assurance, and general administration will be handled by a field
supervisor and program manager.
James C. Borawa, Watershed Enhancement Group Supervisor
Shannon L. Deaton, Habitat Conservation Program Manager.

Project Need

The purpose of this combined scope of work and design plan is to delineate the work
necessary for the LBC mitigation project to meet the required success criteria (USACE 2003).
The stream channel repair work and supplemental planting on the main stem of LBC are required
to ensure the long-term stability of the stream channel. Enhancement of the unnamed tributary
and replacement of the failing culvert are necessary to protect the existing project from ongoing
sources of sediment. This scope of work describes the existing conditions at these locations, the
specific work needed to complete the repairs.

1

2

Project Goals/Objectives

The goals of the project are to repair the stream channel and riparian area of the existing LBC
mitigation project to meet the required success criteria (USACE 2003) and enhance a section of
the UT to provide continuity between the previously restored downstream tributary and the
stable forested upstream section. In order to meet these goals, the project objectives include, but
are not limited to the following:

I. Install two in-stream structures to stabilize the banks and restore stream channel dimension
on 200 If of LBC.
2. Replace a failing 20 ft long X 48 in diameter culvert on the UT with a 30 ft long X 60 in
diameter culvert and stabilize the splash pool on the downstream end to facilitate aquatic
organism passage, stabilize the road, and reduce the probability of future culvert blockages.
3. Remove a debris jam at the upstream side of the culvert and install root wads, rock/log vanes
or rock weirs, and digger logs where appropriate to restore the longitudinal profile of the
stream channel, to provide long-term bank stability, and to improve aquatic habitat quality.
4. Re-grade the stream banks on the UT and reestablish a bankfull bench to restore stream
channel dimension.
5. Remove multiflora rose Rosa multiflora and Chinese privet Ligustrum sinense on the UT.
6. Plant native trees, shrubs, and herbaceous ground cover on all disturbed stream banks and
plant additional native trees and shrubs on 1.6 acres of the riparian area between stations
23+00 and 37+00; plant live stakes on steep un-vegetated streambanks along the main stem
ofLBC to provide long-term bank stability, stream shading, and cover and food for wildlife.

Survey Methodology

On the UT, one representative riflle and one representative pool cross-section were
measured, the longitudinal profile and stream pattern were surveyed, and pebble count data for
cross-sections, reach-wide, and a bar sample were collected. Reference reach data were
collected from an unnamed tributary of the Mitchell River in Surry County, North Carolina.
Two representative riflle and two representative pool cross-sections were measured, the
longitudinal profile and stream pattern were surveyed, and cross-section, reach-wide, and
pavement and sub-pavement pebble count data collected. Survey data were taken using standard
stream survey techniques described in Harrelson et al. (1994). A laser level was used to survey
the stream's profile and cross-section dimensions. Revised North Carolina rural regional
hydraulic geometry curve data were used to verify bankfull elevation conditions in the field
(NRCS 2006, unpublished data, Appendix F). Cross-section data were used to classify the
stream based on existing morphological features of the stream channel and valley type (Rosgen
1994, 1996). Site and reference conditions were analyzed and the project design developed
using RIVERMorph stream assessment and restoration software, Version 4.1.1 (RSARS 2007)
and ArcMap Version 9.2.

Existing Conditions

The project is located in the Yadkin River basin, piedmont physiographic region, Wilkes
County (Hydrologic Unit Code: 03040101070010, NCDWQ sub-basin: 030701). The stream

3

reaches within the project boundaries are classified as Class C water by the North Carolina
Division of Water Quality (NCDWQ). Class C waters are deemed suitable for aquatic life
propagation and secondary recreation (NCDWQ 2003). They are not on the 303(d) list of
impaired streams (NCDWQ 2003).

Little Bugaboo Creek

The watershed upstream of the stream channel repair area on LBC is approximately 3.45
square miles. The stream channel between stations 20+00 and 22+00 on LBC was identified as
having an eroding bank along the outside meander bend at station 20+80 (Appendix A, Figure
A.l.) and a mid-channel bar at station 21+60 that needed to be addressed (URS 2007).
Numerous areas along LBC were identified as having steep streambanks with little to no
vegetation (URS 2007). Additionally, woody vegetation densities on the floodplain between
stations 23+00 and 37+00 appear lower than the desired goal of288 stems/acre (URS 2007).
This floodplain area is approximately 1.6 acres.

Unnamed Tributary

The watershed for the UT is approximately 0.16 square mile. The stream flows out of a
colluvial valley (Valley Type II) with Pacolet sandy loam and Chewacla loam soils (National
Cooperative Soil Survey Web Soil Survey http://websOlisurvey.ru:cs.usda.govlappl) and onto an
alluvial valley (Valley Type VIII) (Figure 3). Pacolet sandy loam soil consists of moderately
steep to very steep (15 to 25 percent slopes) well-drained soils on uplands that are not flooded.
They have a loamy surface layer and clayed subsoil with 1 percent organic matter content in the
surface horizon. Chewacla loam soil consists of nearly level (0 to 2 percent slopes), very deep,
and somewhat poorly drained soils on floodplains. These soils formed in loamy alluvium
deposits and are occasionally flooded. Slopes range from 0 to 3 percent. They have a loamy
surface layer and subsoil with 2 percent organic matter content in the surface horizon.

Land use is primarily agriculture and forestry. Within the watershed are small rural farms
containing forested and open pastures, chicken houses, cattle feed lots, and single family homes.
Poor riparian zone management in the watershed resulted in adverse water quality impacts
through increased sedimentation from eroding streambanks.

Although the UT is shown as intermittent on the Ronda Quadrangle USGS 7.5 minute series
topographic map, it was classified as perennial using the NCDWQ stream identification method
with a score of 38 points (Appendix B). Fish were also found in the pool at the upper-most
portion of the reach.

The UT consists of a 265 If portion of stream that is accessible to livestock, a clogged culvert
that overhangs the channel on the downstream end resulting in the creation of a scour pool
(Figure 4; Appendix A, Figures A.2.-A.4.). The degraded section of tributary accessible to
livestock runs from the western boundary of the Woodie property to immediately upstream of the
culvert crossed by the farm access road. This stream reach has been channelized, impacted by
livestock grazing activity, invaded by exotic plant species in the riparian area, and contains

4

debris accumulation caused by the clogged culvert. The clogged culvert has caused stream
channel aggradation for approximately 200 If upstream of the culvert.

The stream channel for this reach is classified as an F5 stream type with a riflle 4.1 ft2
bankfull cross-section area, entrenchment ratio of 1.1 and width/depth ratio of 45.3 (Figure 5 and
Table 1). The current stream channel slope is approximately 0.019 ftlft; it was originally 0.034
ftlft measured from the top the first riflle to the bottom of the existing culvert (Figure 4 and
Table 1). The pool cross-section dimension data indicate a bankfull cross-section area of 5.0 rr
(Figure 6). The median particle size for reach, bar, riflle, and pool features, based on pebble
counts, is 0.25 mm, 8.86 mm, 17.65 mm, and 0.12 mm (Figures 7-10). Based on data collected
from a riflle cross-section at station 0+30 the reach has degraded from a B4 channel type to an
F5b channel type (Rosgen 1996). The Pfankuch rating for this reach is 133 - poor (Rosgen 1996;
Appendix B).

The 20 foot long X 48 in. diameter corrugated metal pipe (CMP) culvert was installed when
the farm access road leading to the upper stream crossing on LBC was improved. The culvert is
not part of the mitigation site and is being replaced as an agriculture best management practice
improvement. Physical conditions associated with this culvert have resulted in channel
instability, erosion, and scour problems in the previously restored section of the unnamed
tributary immediately downstream. The culvert is prone to being blocked with woody debris
during flood events which inhibits aquatic organism passage. Additionally, the culvert appears
to be too short to support the width of the access road crossing. Side slopes from the road
surface to the inverts of the culvert are steep, and the downstream slope has eroded to the point
that it is beginning to compromise the integrity of the road crossing. The erosion of the bank
slope at the outlet appears to be the result of storm flows overtopping the road once the inlet
became plugged with debris. If the existing 48 in pipe is maintained and kept clear of debris, it
has the capacity to carry the 50-year storm flows from this watershed.

The riparian area along the UT is in very poor condition. The vegetation has been heavily
overgrazed by cattle. Only a narrow strip of woody vegetation exists on the streambank and
consists mostly of multiflora rose Rosa multiflora and Chinese privet Ligustrum sinense. Black
cherry Prunus serotina, red maple Acer rubrum, and tulip poplar Liriodendron tulipifera are also
found in the riparian area in limited numbers.

Reference Reach

The reference reach for this project is an unnamed tributary to the Mitchell River in the
Yadkin River basin, Surry County (Hydrologic Unit Code: 03040101080010, NCDWQ sub-
basin: 030702) (Appendix C, Figure C.l.). Its watershed is approximately 0.42 square miles.
The reference reach has a B primary classification and trout waters (Tr) and outstanding resource
waters (ORW) supplemental classifications according to NCDWQ (2003). These classifications
indicate the waters are suitable for primary recreation, to support aquatic life, have conditions
supporting the natural propagation of trout, and contain unique or special aquatic resources.

The reference reach passes through an alluvial valley (Valley Type VIII) with Bandana- Tate-
Nikwasi complex and Colvard and Suches soils (National Cooperative Soil Survey Web Soil

5

Survey http://wchsoilsurvey.nrcs.usda.gov/app/) (Appendix C, Figure C.2.). The Bandana-Tate-
Nikwasi complex consists of nearly level to gently sloping (0 to 3 percent slopes), very deep, and
somewhat poorly drained Bandana and Nikwasi soils and gently sloping to moderately steep (2
to 15 percent slopes), very deep, well drained Tate soils. Bandana and Nikwasi soils are formed
in recent alluvium on floodplains and Tate soils are formed in colluvium on benches, fans, and
coves. Colvard and Suches soils consists of nearly level to gently sloping (0 to 3 percent slopes)
and well drained soils on natural levies and floodplains. These soils formed in sandy and loamy
alluvium deposits and are occasionally flooded.

The majority of the reference reach's watershed is located on NCWRC Game Lands and is
forested. The remaining portion of the watershed is on a small farm where the stream runs
through a forested area and open meadow.

The current stream channel slope is approximately 0.034 ft/ft (Appendix C, Figure C.3. and
Table 1). The riffle cross-sections dimension data indicated a bankfull cross-section area
between 8.0 and 8.1 ft2 with entrenchment ratios ranging from 2.8 to 4.6 and width/depth ratio of
13.1 (Appendix C, Figures CA. and C.5.). The pool cross-sections dimension data indicated a
bankfull cross-sectional area between 10.1 and 12.53 ft2 (Appendix C, Figures C.6. and C.7.).
The median particle size for reach, pavement, sub-pavement, and two riffle counts are 12.98 mm,
82.76 mm, 44.57 mm, 37.57 and 37.32 mm (Appendix C, Figures C.8.-C.11.). Based on data
collected from a riffle cross-section at station 4+02 the reach is classified as a C4b channel type
(Rosgen 1996). The Pfankuch rating for the reference reach of 55 is considered good (Rosgen
1996).

Proposed Improvements

Little Bugaboo Creek

A rock or log vane will be installed on the left stream bank at station 20+80 to protect the left
streambank by directing water into the center of the stream channel. The substrate material
comprising the mid-channel bar at station 21 +60 will be moved to the left streambank and the
stream channel reshaped to restore proper channel dimension. A rock cross vane or weir will be
installed at station 21 +90 to maintain the grade of the riffle and to reduce shear stress at the outer
edge of the meander bend. The point bar on the left bank at station 21 +90 will be re-shaped to
restore proper stream channel dimension. Disturbed streambanks will be reshaped to 2:1 to 3:1
slopes and stabilized with coir fiber matting. Salvaged woody vegetation and sod mats will be
used to revegetate the disturbed streambanks wherever possible. These areas also will be seeded
with a temporary and permanent native riparian seed mix (Table 3) and mulched with straw.
Typical designs of the proposed in-stream structures are shown in Appendix D.

Along the main stem of LBC, 2,500 live stakes will be planted on streambank areas with
sparse vegetation (Table 4). The floodplain between stations 23+00 and 37+00 will be planted
with 460 trees and shrubs (288 stems/acre) to augment existing vegetation (Table 4). Larger
containerized trees will be planted in higher densities around meander bends. A glyphosate
based herbicide will be sprayed around the base of planted trees and shrubs in order to reduce
competition from herbaceous plants.

6

Unnamed Tributary

The final design plan for this reach was based on dimensionless ratios of the reference reach's
morphological measurements and compared to the revised rural regional hydraulic geometry
curve information (NRCS 2006, unpublished data) to develop bankfull width, mean depth, and
cross sectional area (Table 1). The proposed improvements will restore the longitudinal profile
and dimensions of the stream channel, but not the stream pattern. Changes to the stream pattern
were limited by the width of the conservation easement and the need to minimize construction
costs.

Fill from the aggraded stream channel will be removed and a channel and bankfull slope of
0.034 ft/ft established. Nine rock weirs or double drop cross vanes will be installed in the stream
channel to maintain grade control, reduce the near bank water velocity and shear stress, and
create aquatic habitat (Table 2; Figures 11 and 12). Footer rocks will be placed approximately 1
ft below the normal stream bottom. Rock size will vary from 250 pounds (2.5 ft3) to 1,360
pounds (8.0 ft\ Depending on the stream channel bed's existing substrate, gravel and cobble
may be added to obtain the desired channel slopes and relative substrate roughness. Typical
designs of the proposed in-stream structures are located on Appendix D.

A 1-2 ft wide bankfull bench will be created on both sides of the stream channel.
Streambanks will be reshaped with slopes of2:1 to 3:1 and stabilized with coir fiber matting.
Constructed riffles will have a design bankfull mean depth of 0.5 ft, bankfull maximum depth of
0.9 ft, bankfull width of7.3 ft, and width/depth ratio of 14.2 (Table 1; Figure 13). Pools will
have a mean bankfull depth of 0.62 ft and a maximum bankfull depth of 1.5 ft (Figure 14). Runs
and glides will be transitional features between riffles and pools.

The competency of the proposed channel to transport sediment was evaluated to guard against
aggradation or degradation. Sediment transport values were calculated using the RIVERMorph
Sediment Transport Competency module (RSARS 2003). Based on this model, a critical
dimensionless shear stress of 0.047, minimum bankfull mean depth of 0.47 ft, and bankfull water
surface slope of 0.031 ft/ft are required for entrainment of the largest particle in the bar sample
(65 mm). The design bankfull mean depth of 0.52 ft and bankfull water surface slope of 0.034
ft/ft exceed the minimum required mean depth and slope. Using the Modified Shields Curve and
Rosgen Colorado data set, a movable particle size of88.5 mm and 153.7 mm was predicted at
bankfull shear stress conditions of 1.02. The proposed bank stabilization specifications will be
able to move the bed load.

To minimize future culvert maintenance requirements and allow aquatic organism passage,
we are proposing to replace the existing 20 foot long X 48 in CMP with a 30 ft long X 60 in
diameter CMP. Doing so will not only allow the fill slopes of the road to be stabilized at 1.5: 1
slopes and permit the backfill to be machine compacted, but also will reduce the likelihood of
debris jams at the inlet. The side slopes will be stabilized by placing woven filter fabric topped
with class B (Minimum Dso = 9 in) stone. The CMP will be buried one foot below the substrate.
In order to maintain a gravel channel within the CMP and reduce the potential for a head cut, a
rock vane will be placed upstream of the CMP and a rock sill will be placed at the end of the

7

plunge pool. The larger diameter CMP will be able to carry flows in excess of the IOO-year
storm event and reduce maintenance. The planned stabilization and protection of the upstream
section of this tributary also will help reduce the quantity of woody debris washed downstream
during storm events. A water line running along the road and over the existing culvert will need
to be capped during construction and replaced upon completion.

Invasive exotic plant species will be physically removed from the riparian area or sprayed
with a glyphosate-based herbicide. Disturbed areas will be seeded with a temporary and
permanent native riparian seed mix (Table 3) and mulched with straw. Five hundred and fifty
live stakes comprised of 5 species and 160 potted or bare root trees and shrubs made up of 15
species will be planted throughout the reach's three riparian area planting zones (Table 5).

Before construction begins, 300 ft oftemporary fencing will be installed, if necessary, to
exclude cattle from the construction area. After construction, the channel will be protected from
further livestock impacts by installation of approximately 500 If of permanent livestock
exclusion fencing along the conservation easement boundary. This section of unnamed tributary
will be protected with a permanent conservation easement that has a total width of approximately
1 00 ft.

Sediment and Erosion Control

A Certificate of Plan Approval from the North Carolina Division of Land Resources, Land
Quality Section is not required for this project because only 0.74 acre of land will be disturbed.
However, standard erosion and sediment control practices will be used (see details in Appendix
E).

As-built Report

Upon completion of construction an as-built survey will be conducted to collect the
following data: topographic survey of the portion of unnamed tributary adjacent to the existing
project, reach and cross-section pebble counts, and photographic documentation of the planted
vegetation. The survey will detail the stream's pattern, profile, cross-sectional dimensions
(based on one riffle and one pool). These data will be compiled into an as-built report that will
also provide photographic documentation of the maintenance along the main stem of LBC. The
survey and photographic information will be compared to pre-construction conditions where
possible.

Monitoring and Maintenance

Monitoring and maintenance is not included in this proposal. Any additional monitoring
shall be left up to EEP and permitting agencies.

Project Schedule

8

The project schedule depends on the date EEP issues a project agreement. The following is a
tentative project time line based on an estimated agreement execution date:

. Scoping document and design plans to EEP
. EEP issues project agreement and
design plan approval
. USACE, DWQ permit submittal
. Permits obtained
. Advertise project for bid
. Site construction
. Woody vegetation plantings complete
. As-built report

Conclusion

November 7, 2008
November 21, 2008

December 23, 2008
February 16,2009
January 26,2009
March 2, 2009
March 31, 2009
June 31,2009

Completion of this project will stabilize and protect the section of unnamed tributary to LBC
that is currently degraded and accessible to livestock, allow continued farmer access over the
unnamed tributary, stabilize areas of erosion and channel instability on the main stem ofLBC,
and ensure a dense woody vegetative riparian area. These repairs and improvements will
contribute to ensuring the overall success of this restoration project.

9

References

NCDWQ (North Carolina Division of Water Quality). 2003. Yadkin-Pee Dee River basin water
quality plan. Raleigh, North Carolina.

Harrelson, C. C., 1. P. Potyondy, and C. L. Rawlins. 1994. Stream channel reference sites: an
illustrated guide to field technique. General Technical Report RM-245, U.S. Department
of Agriculture, Forest Service, Fort Collins, Colorado.

URS (URS Corporation-North Carolina). 2007. Little Bugaboo Creek stream restoration, 2007
final monitoring report, monitoring year 3. Morrisville, North Carolina.

Rosgen, D. L. 1994. A classification of natural rivers. Catena 22:169-199.

Rosgen, D. L. 1996. Applied river morphology. Printed Media Companies, Minneapolis,
Minnesota.

RSARS (RlVERMorph Stream Assessment and Restoration Software). 2007. Version 4.1.1.
Professional edition. Copyright 2002-2005, RIVERMorph LLC, Louisville, Kentucky.
Available: www.riVCrl11(lrpl1i:(lI11. (August 2008).

USACE (United States Army Corps of Engineers, Wilmington District, United States
Environmental Protection Agency, North Carolina Wildlife Resources Commission, and
North Carolina Division of Water Quality). 2003. Stream mitigation guidelines.

10

Figure I.-Little Bugaboo Creek mitigation site vicinity map, Yadkin River basin, Wilkes
County.

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Little Bugaboo Creek Mitigation Site
EEP Project Number: 00056
Wilkes County, North Carolina
July 2008

ource:
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onda and Thurmond Quadrangles, 7.5 Minute Series (Topogmphic

11

Figure 2.-Little Bugaboo Creek mitigation site component map, Yadkin River basin,
Wilkes County.

Legend
- Road
\ D Existing Project

, 0 Proposed Project
D Stream Channel Repair Area ro
11II

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Project Component Map
Little Bugaboo Creek Mitigation Site
EEP Project Number: 00056
Wilkes County, North Carolina
July 2008

ource:
United States Department of the Interior, Geological Survey
onda and Thurmond Quadrangles, 7.5 Minute Series (Topographic

12

Figure 3.-NRCS soil survey data for an unnamed tributary to Little Bugaboo Creek on the
Woodie property, Yadkin River basin, Wilkes County. The stream flows through Pacolet sandy
loam (PaD) and Chewacla loam soils (CkA).

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14

Figure 5.-Riffle cross-section at station 0+30 on an unnamed tributary to Little Bugaboo
Creek on the Woodie property, Yadkin River basin, Wilkes County. The solid blue line
represents the stream channel bankfull elevation and the dashed blue line represents the flood
prone elevation.

100
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Horizontal Distance (ft)

15

Figure 6.-Pool cross-section at station 1 +45 on an unnamed tributary to Little Bugaboo
Creek, on the Woodie property, Yadkin River basin, Wilkes County. The solid blue line
represents the stream channel bankfull elevation and the dashed blue line represents the flood
prone elevation.

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40

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Horizontal Distance (ft)

16

Figure 7.-Reach pebble count data for an unnamed tributary to Little Bugaboo Creek on the
Woodie property, Yadkin River basin, Wilkes County.

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Particle Size (mm)

Size Class Particle size (mm) in year sampled
Index Pre-construction
016 0.06
D35 0.12
050 0.25
084 23.10
D95 103.29
0100 180.00

17

Figure 8.-Bar pebble count data taken from an unnamed tributary to Little Bugaboo Creek
on the Woodie property, Yadkin River basin, Wilkes County.

....
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Size Class Particle size (mm) in year sampled
Index Pre-construction
D16 0.97
D35 3.54
D50 8.86
D84 50.72
D95 60.31
DlOO 65.00

18

Figure 9.-Riffie pebble count data taken at station 0+30 from an unnamed tributary to Little
Bugaboo Creek on the Woodie property, Yadkin River basin, Wilkes County.

100

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Particle Size (mm)

Size Class Particle size (mm) in year sampled
Index Pre-construction
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D35 7.67
D50 17.65
DS4 90.93
D95 159.83
DlOo Bedrock

-1
10000

19

Figure 1O.-Pool pebble count data at station 1 +45 taken from unnamed tributary to Little
Bugaboo Creek on the Woodie property, Yadkin River basin, Wilkes County.

L-
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Size Class Particle size (mm) in year sampled
Index Pre-construction
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D50 0.12
D84 0.95
D95 8.82
DIDo 128.00

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23

Figure 13.- Typical riffle cross-section representation at station 0+30 on an unnamed
tributary to Little Bugaboo Creek site Yadkin River basin, Wilkes County. The solid blue line
represents the stream channel bankfull elevation and the dashed blue line represents the flood
prone elevation.

Proposed Riffle + Bankfull Indicators ~ Water Surface Points 6 Existing Riffle
Wbkf ~ 7.4 Dbkf - .52 Abkf - 3.84

105

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80

100

Horizontal Distance (ft)

24

Figure 14.- Typical pool cross-section design representation at station 1 +45 on unnamed
tributary to Little Bugaboo Creek, Yadkin River basin, Wilkes County. The solid blue line
represents the stream channel bankfull elevation and the dashed blue line represents the flood
prone elevation.

Proposed Pool . Bankfull Indicators . Water Surface Points /" Existing Pool
Wbkf = 9.06 Dbkf = .62 Abkf = 5,56

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25

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27

Table 2.-Proposed Location and Type of EnhancementIMaintenance Table.
Little Bugaboo Creek/EEP Project Number: 00056

Reach Stationa Proposed Improvements.
LBC 20+70-22+00 Reshaped right and left banks as needed.
20+80 Install log or rock vane.
Remove midchannel bar; add material to
left bank for proper cross-section
21+60 dimension.
21+90 Install rock weir or cross vane.
UT to LBC 0+00 - 3+15 Reshaped right and left banks as needed.
0+33 Install rock weir or cross vane.
0+55 Install rock weir or cross vane.
0+76 Install rock weir or cross vane.
1+01 Install rock weir or cross vane.
1+27 Install double drop rock weir.
1+61 Install rock weir or cross vane.
1+84 Install double drop rock weir.
2+17 Install double drop rock weir.
2+50 Install double drop rock weir.
2+60 - 2+90 Install 60 in corrugated metal pipe.
3+15 Install rock sill.

aLocations are approximate and may change due to onsite conditions.

28

Table 3.-Seeding Summary for Sediment and Erosion Control by Community Type.
Little Bugaboo Creek/EEP Project Number: 00056

Community Type: Riparian Acres 0.65
Total
Approved Date Species Name Common Name Stratumb Pounds
Lolium multiflorum Rye grain Herb 78.00
Andropogon gerardii a Big bluestem Herb 0.49
Eidens aristosa a Tickseed sunflower Herb 0.68
Carex lupulina Hop sedge Herb 0.10
Carex vulpinoidea Fox sedge Herb 0.10
Chamaecrista fasciculata Partridge pea Herb 0.49
Coreopsis lanceolata a Lance leaved coreopsis Herb 0.49
Elymus virginicus Virgina wild rye Herb 1.37
Juncus effusus Soft rush Herb 0.05
Helianthus angustifolius a Swamp sunflower Herb 0.39
Oenothera biennis Evening primrose Herb 0.20
Panicum clandestinum Deer tongue Herb 0.98
Panicum dichotomiflorum Smooth panic grass Herb 0.49
Panicum virgatum Switchgrass Herb 0.83
Polygonum lapathifolium Nodding smartweed Herb 0.49
Polygonum pensylvanicum Pennsylvania smartweed Herb 0.49
Rubeckia hirta a Black eyed susan Herb 0.20
Schizachyrium scoparium Little bluestem Herb 0.78
Sorghastrum nutans Indiangrass Herb 0.98
Verbena hastata Blue vervain Herb 0.20
Subtotal 87.75
Community Type: Pasture Acres 0.09
Total
Approved Date Species Name Common Name Stratum Pounds
Lolium multiflorum Rye grain Herb 10.8
Lolium arundinacea Fescue Herb 5.4
Trifolium pretense Red clover Herb 0.9
Subtotal 17.10
Total 104.85 0.74

~orth Carolina Ecotype
b
Stratum - Herbaceous, Shrub, Subcanopy, & Canopy

29

Table 4.-Planting Summary for Vegetation per Planting Zone.
Little Bugaboo Creek/EEP Project Number: 00056
Reach: Little Bugaboo Creek

Planting Zone I" Acres 0.23
Maximum Individual Number
Soecies Name Common Name Spacing Unit Type" Sized Stratum" SDacing of Stems
Comus amomum SilkY dogwood 2ft L 24 in Shrub 2ft 400
Salix nij:!ra Black willow 2ft L 24 in Shrub 2ft 600
Salix sericea SilkY willow 2ft L 24 in Shrub 2ft 500
Cephalanthus occidenta/is Button bush 2ft L 24 in Shrub 2ft 500
Sambucus canadensis Elderberry 2ft L 24 in Shrub 2ft 500
Subtotal 2,500
Planting Zone 3b Acres 1.60
Maximum Individual Number
Species Name Common Name SDacing Unit Tvne Size Stratum SDacing of Stems
Acer rubrum Red maple 10ft R 2-5 ft CanoDv 10ft 50
Acer rubrum Red maule 30 ft P 1.5 in CanODY 30 ft 15
Aesculus sa/vatica Yellow buckeye 10ft P 3 gal Shrub 10ft 35
Aronia arbutifolia Red chokeberry 22 ft P 3 I!al Shrub 7ft 35
Asimina tri/oba Common DaW\laW 10 ft R 3ft SubcanoDv 10ft 20
Betula nigra River birch 10ft R 2-5 ft CanODY 10ft 50
Betula niwa River birch 30 ft P 1.5 in CanoDv 30 ft 15
Comustlorida Flowering dogwood 10 ft R 3ft SubcanoDv 10ft 30
JUfllans niflTa Black walnut 10ft R 3ft CanoDv 22 ft 30
Lindera benzoin Spicebush 10ft P ll!al Shrub 7ft 30
Liriodendron tu/ipifera Tulip poplar 10ft R 5ft CanoDv 10ft 40
Platanus occidentalis Sycamore 10 ft R 2-5 ft CanODY 10ft 30
Platanus occidenta/is Sycamore 30 ft P 1.5 in CanODY 30 ft 15
Quercus Northern red oak 10ft R 3ft Canopy 10ft 20
Quercus Northern red oak 10ft P 1.5 in CanODY 10ft 15
Robinia Black locust 10ft R 2ft CanoDv 10ft 30
Subtotal 460
Total 2,960
Total Acres 1.83

"zone 1 - Includes the area from the water's edge to the bankfull elevation along the main stem ofLBC (Reach 1),
bZone 3 - Includes the area from the top of bank to the edge of the riparian planting zone (outer limits of the conservation easement area)
between station 23+00 and station 37+00.
" Unit Type - L = Live stake, B = Ball & Burlap, P = Potted or containerized material, R =Bare root, S = Seed.
d Size - Length of Live stakes (in.), Caliber size ofB&B material (in.), Pot size (2-3gal), Height of woody material (ft).
"Stratum - Herb, Shrub, Subcanopy, & Canopy

30

Table 5.-Planting Summary for Vegetation per Planting Zone.
Little Bugaboo Creek/EEP Project Number: 00056
Reach: Unnamed Tributary to Little Bugaboo Creek

Plantine Zone 1. Acres 0.05
Maximum Individual Number
Species Name Common Name Spacing Unit Typed Sizee Stratunl Spacing of Stems
Comus amomum SilkY dol!Wood 2ft L 24 in Shrub 2ft 150
Salix niwa Black willow 2ft L 24 in Shrub 2ft 50
Salix sericea SilkY willow 2ft L 24 in Shrub 2ft 100
Cephalanthus occidenta/is Button bush 2ft L 24 in Shrub 2ft 100
Sambucus canadensis Elderberrv 2ft L 24 in Shrub 2ft 150
Subtotal 550
Plantinl!; Zone 2b Acres 0.07
Maximum Individual Number
Species Name Common Name Spacing Unit Type Size Stratum Spacing of Stems
Alnus serrulata Tlll!. alder 11ft R 5ft Shrub 11ft 4
Aronia arbutifolia Red chokeberry 11ft P 3 eal. Shrub lIft 5
Asimina tri/oba Common Dawoaw lIft R 5ft SubcanoDv 22 ft 3
Betula niwa River birch II ft, 36 ft R,B 5 ft, 1.5 in Canopy 22 ft 3,1
Carpinus caroliniana Ironwood lIft P 1 gal. Subcanopy 22 ft 5
Lindera benzoin Spicebush lIft P I gal. Shrub 22 ft 4
Platanus occidentalis Svcamore 11 ft, 36 ft R,B 3 ft, 1.5 in Canopy 22 ft 3,2
Subtotal 30
Planting Zone 3c Acres 0.36
Maximum Individual Number
Species Name Common Name Spacing Unit Type Size Stratum Spacing of Stems
Acer rubrum Red maple 11ft R 3ft Canopy 11ft 9
Acer rubrum Red maple 11ft P 1.5 in CanoDY 55ft 3
Aesculus salvatica Buckeve 11ft P 3 eal Shrub lIft 9
Aronia arbutifolia Red chokeberrv lIft P 3 eal Shrub 22 ft 10
Asimina tri/oba Common pawoaw 11ft R 3ft Subcanopv 11ft 9
Betula nigra River birch 11ft R 3ft Canopy 11ft 10
Betula niwa River birch 36 ft P 1.5 in CanoDv 55 ft 3
Comus .t1orida Flowerine dOl!Wood lIft R 3ft SubcanoDY 22 ft 8
DiosTJyros virginiana Persimmon 11ft R 3ft CanoDv 11ft 8
Dios1JVros virginiana Persimmon 36 ft P 1.5 in Canopy 55 ft 2
I/ex verticil/ata Win~ 22 ft P 1 eal Shrub 8ft 10
Juglans niwa Black walnut 11ft R 3ft CanoDY 22 ft 8
Lindera benzoin SDicebush 11ft P 1 l!al Shrub 22 ft 9
Liriodendron tulipiftra Tulip DOplar 11ft R 5ft Canopy 22 ft 10
Platanus occidentalis Sycamore 11ft R 3ft CanoDv 11ft 10
Platanus occidentalis Svcamore 36 ft P 1.5 in Canopy 55 ft 3
I Quercus rubra Northern red oak 11ft R 3ft CanoDv 11ft 7
IOuercus rubra Northern red oak 36 ft P 1.5 in CanoDv 55 ft 2
Subtotal 130
Total 710
Total Acres 0.48

.Zone 1 - Includes the area from the water's edge to the bankfull elevation.
bZone 2 - Includes the area from the bankfull elevation to the top of bank.
cZone 3 - Includes the area from the top of bank to the edge of the riparian planting zone (outer limits of the conservation easement are
d Unit Type - L = Live stake, B = Ball & Burlap, P = Potted or containerized material, R =Bare root, S = Seed.
e Size - Length of Live stakes (in.), Caliber size ofB&B material (in,), Pot size (2-3gal), Height of woody material (ft).
f Stratum - Herb, Shrub, Subcanopy, & Canopy

31

Appendix A.-Little Bugaboo Creek Mitigation Site Photographs.

Figure A.l.-Banks erosion on Little Bugaboo Creek looking down stream at station 20+80;
location of proposed rock or log vane on the left bank, June, 6, 2008.

Figure A.2.--Channel aggradation on the unnamed tributary to Little Bugaboo Creek from
station 1+55 to station 2+60, May 5, 2007.

I-
I
i

32

Figure A.3.-outlet ofthe culvert under a farm road crossing on an unnamed tributary to
Little Bugaboo Creek, May 5, 2007.

Figure AA.-Looking upstream into clogged 48" culvert on the unnamed tributary to Little
Bugaboo Creek, May 5, 2007.

il

I

33

Appendix B.--Stream Identification Form (NCDWQ) and Pfankuch Stream Assessment
Forms (Rosgen 1996) for an unnamed tributary to Little Bugaboo Creek.

North Carolina Division of Water Quality - Stream Identification Form; Version 3.1

Date: ~ /~'--~:ojec~.~:fk:-~~~~;"}. C;,-;;"(,r-p' Latitude:
rf )07 1'\ ~c.c:".....^ _~l''!,
( I ~
Evaluator: fY\." "- .\......\Il.'/' Site: \...-\ r.. LT~t,.. () . k / \ Longitude:
V\ \j \,0..." ..~.. \...1.RQ i/_

Other t~~r?"

Total Points:
Stream is .11 leasr inter,.;ittant 3 Q
.7 "it 190r ~nmalit;?30 D

County: W',l L '"

it g. Ouar! Nam..:

-I
I

, l\.,...~ -;- ---I
c'v", l~

A. Geomorphology (Subtotal::: 2 () \ 5 , It- Abse'nf "~I . ~'Wea~"i"'iModerate -'j'~~"StTong
;-1'. Contin~ous bed'and bank . I" 0. I 1 ~"r'" 2'. ~! Q) ... I~
I' 2. 'SinuoSitY . \ 0. tv 2 I 3
I~~n-Chan':l.e:~~uctur~: riffle-pool sequence I 0 : <b - - i __2 " 3
4. ~oil te~re or stream substrate sorting : 0 1 2 rJJ?
5. Active/~ floodplain 0. 1 2 ~ I
~ .Qeposi~~n!1 b~~ or ~~ches _, __ __ _ ~__ ~_ _ . . 1 2 -;~ I
2. Braided channel -.. .. __ _ -- ---- _ ~.. _~. _ 11 22... ,- '33, I
8. Recent alluvial deposits cr , ~
9" Nat~;ral-j;;~~5 GD 1 2 3 I

- ~ ~:-~:::n~:~ - uu_ - +-~-+ j ~ -& -1~35j

12. Nal\.lralvall:~ord~in~~~Y-~~-I ~ _l'~- ~.5 J. 1 I. ~L l'
13. Second or greatt:.r order channel on existino ,r' -' '- ..J'
USGS or NRCS map or other documented ~ No = 0) Yes = 3 I
evidence. __ _____-"::':::.:-:::;,,~~_ __
-t, Man-mod" ditdlO:' :Ile not rated' ;0" dl:;CU5sions in Ilklnuol

B. HydrolC?9Y (Subtotal = ''8'
14. Groundwater flow/discharge
15, Wator in channel ancl-;'48 hrssince rain.or~
"'<~.~r in chan~el-=-~)' ()r:..g~~wing_s~a60,n_-_
16. Lea flitter
17. Sediment on pl~~ ~r d~bri~._. _ _ _ ..
18. Organic ,~ebris lines or piles (Wrack lines)
19. Hydric soils (redoximorphic f6ature~) P1'e~nt?

0. I
- _u__,_'_. t---

o I

1.5
o
0.

}-

G'5
0.5
0.5

(12) i 3
'; .. J~ _ GZ

0.5 I 0
ill l' 1.5-
t.0 I 1.5
, Yes::: 1.5

I
1
1
.1

No::: 0

C, Biology (Subtotal::; (1 S )
ii:{i::::.;::~n~~::~I'--'-- T--~~- - '1' .. ~ j -.. --}- -- ~

22. CroYhsh-- -- ..---- - --j,.. ~---- --_... 0.5 I 1 1.5
23. Bivalves -- ------.-,--., ---- - ci -I 1 ' -2 - 3
24. Fish 0 0.5 (i) 1.5
25. Amphibians ~\ 0,5 1 1,5
26, Macrobenthos (no, t!: diversity an~ abu~,!n~).. 0 .. 0.5 I ((0 _', 1 ,5
Tf. Filame~~~5 a.I~:.: periphyton ! 0 ((i) 2 i ___3
1_~8:)~I}~lt!~zi~g ba~erialf~ngu5.: , _.. _.. .. @ __ _I . ~.~ 1 _ _L-~.5
I ~9 '. Wotlan? plants !n_ st:r:ambed : FAC @ FACW = 0.75; OBL :::_],.5 SAV = 2.0.:. ~ther = 0
Jlems 20 and 21 focu:! on the presence of upland pl~n:s. Itom 29 focusas on the presence of aquatic or \'It'tiand plants.

Notes: (use back side 01 this form for additional notes.)

Sketch:

'('w::'~'\ .e;,..J'J.(.~". ;) ~ I i')j" ~. \1,\ I \ (!.o,j.~, I"/~
~ k, i. .ft~~ '\/\ p-o--I @ .;/" Oh~" =+

34

I r:VLL III: ASSESS/VlENf OF ) TREAIv\ CONI)ITIC)N AND DEPARTURr

-,

CIIANNEL STI\BJI.ITY (PFANKUCH) t::VALUAfJOf\:

I AND STREt\.\l CLASSIFIC.~TION SUMMAHY (LEVEL III)

Reach LocaI!OIl.B~.~ lL (v-I,: j _ _ Dilte_ 6 /J..lJ~ Observers_./I1!...:. _ __

Srrea/!!,'IYpe Et.~ _ _ _ __ _ _ _ _'__ __

_ _ Category j' _ = ,EXCELLENT,=,- =- =-=

uprrR 1 Land/orm Slop~ Bauk Slolx- Gradient <30% I?
IIANKS 2 Ma!~. Wa!.IIIl~. No ,'vldellu: of 1.1st or (mure 1I1~"" w,I~t1ng. 3
.3 Dcbrl!> Jam Potential F..ss..lItlally abSt'1ll from immcdiale crounfl area, <(i)
~ Vel:.'lallve Rank PlOtr.Ction 90'11. f plum den..:!)'. Vi~or and v;lU~sllgge~t a dfep denS<': soil bindlllg .root m.l~S, 3
LOWER ;, Channel (','pacity Aml'k for prese.,t p!U) somc tnarases. Peak 110'....5 cont;tined, WID r.ltio .;7. J
IlANKS (. Bank Rock CoIllt'lIt 65%. with laJr,e angular bould,~f,. 12" t r.omlllon. :1
7 Ob~llllcti1.lns to Flc" Rod;.s and logs firmly llllbedd~d. How p;lltcrn wlthmu CUlling or deposition. Stlblc bed. 2
8 CUlling lillie or none. Inlre<]. raw l1anks less Ih~lI 6". 4
_ ---'! ~'p()sirion _ Ullk <:r no enIMgemc~rharl!ll'l.or pro bars~ __ ,1
BonOM 10 Rock AlIr,lIlarity l]hJrp edg.'s afill COllWIS.I'J.InC M11(acC.~ roul:h. ().i
11 B!lr,htne:iS Surfaces cillll. dark 01 srain~c1 Gtll nor I1rlgh!. 1
I I.! Conr.olidalion of Pamdcs Assorted ~i/.es liShtly J~lck~~1 or ovcrlappmg. 2
1:\ Batwrn Sj7A~ DblIibu!ion Nu ~i7.e dl~ngc cvid~u!. St;tl.l!c maler. /10-100% 1
J.1 Scouring ,HId IkptJslllon I <5% of bOlTom 1IITecr..c1 by )n'ur or depcsirioll. 6
_ _1~qlla!!~'yrieLlljor~L~!lUndanl Growth n!iISS.llk dark l:re~"lIuial. In swifr walcr wo:__ I
TOTAl. .~

:~:I:loPCj~adicnt10'60%- - - - =-= 0 I

freqllent or huge, "'mlllg sediment nCilrly y,'ar Iou:; ~. .
Mtllkrat,: III he<l\j' lIlIIllllllL\, mo~.tly I.1rger Si7A~, ~:(l 1'- ,_
<50 10% density. Lower vigor and fewcr sp,~cies (rom a ~hallo\\'.
_ _ -1.lJ.s<QillllU1QfJ-UL'I.!L/Ila:i.S... _ _ -- _

Balely contaill~ present peaks. ()(rnsloua! overbank floods. \\'fl) ralio IS to 25.
:1.0 '10% wirh nlUst ill the 3 (," diameter da5s.
Modcr, fr"quent. 1I11SLlble llbstrutlions movc with high nows r;lUsillg bank
cuuln); mill poollUHnr,.
8 CUll lug SlgllllicanL CUL~ 12,24" biJ.:h. RoolIMI ol'clhangs ,tlId sk.ughfn1\ c\'ldclll <12)
I - __9 ~rOSltlor~ _ Moder. d...~o~n ~ new ~'.ravel and cou~nd on old and ~ome new bars~ 12

1\0 n 0.\\ 10 Rock Angularity j Corners and edges wdl rOlluded In two dlmcnsion~. 3
I II BlI~lllne~s MlxllIIC dull and bnr,hl. ie :lS-oS'll> mixture r.lnge 3
l 1;> Conwlldalion ot Panicles Mostly loo~c assortment with no apparent overlap, (6J
13 Bottom Size Distrlburlon Mo,),"c. change III slzl':>. Stable malerlal~ 2050% 12
J.l Scouring and Deposition 30,50% allt:ctt'd. Deposits & scour at obslrul1jons, wnstrit1ion:;, and bends, III
Som~ fIlhn!,: of pools.
_ _ 1 [. ^q~lE. VC~i1i(l.!!.. Pre~:cr~'otly. mo:~_1O bad:watet Seasonal a1t:.,c li!oWlh llIakrs r()('k.~ Slkk.~

TOT....L L.32J
------~-

_Ca~o~

=1

GOOD

uPI'm
1lA.\I1\S 2
3
LOWER 5
BANKS (,
7

!.;;nd(orm Slo?,'
Mass Wasllng
Debris Jam PotentIal
VeWlallv,' llank Pr,>rc.."tloll

Chaunel r;lpacllY
Bank Rock CoIIII'n!
ObmruCli.;>ns [(l 1101'1

8ank :;Iop,~ Gradient :l0. ~O'lh
In!Jequenl. MO~lly healed over.1Jl\v future potClll(;'1.
Prest'nl. buc mo.\t1y small twigs and limbs.
70,'.lO% J,'n~i!)', h,Wl'! spcdcs or less vigor S1l1:g"_~lle~5 den:.<' or dcq> ~SS.

Ad~11IUte. Bank oVerilows rare, WID ralio 8,15
40 (.!i%. Mostly small bouhkrs [0 mbbks 6 12"
Sonl<' plesent wnsing erosive au~s CUrrl'lrb and minor pool.
filltn~. ObWuClions lIl:wer anrlle~~ I1rm.
Sollie. inrelmincntly at outnnves and cOllsuhrJons. Raw bank:.l1lay l,e lip III I:!"
Scm~ new bar increasc. mostly fTOm COarse gravel.
---,- -~ ----
Rounded lllrner~ ;Illd edge~, sutlan:s smooth. lIa!.
Mo~rly dull, but may h,lve <.35'ib hright \lJ:laccs,
Molleral,'ly packet! with somr OVl1'litppillg.
DL~lIibutlon shlfr light Stahle lmllf:rial 50,80....
5-30% alk~1ed. Scour at consuictions aud whne r,rade:; steel"'".
Sam" deposlrioll in pollis,
~nrl~ Ailpc (orm~ In low velocity ami pool are;ls. Mo~s here too_

BOTIO.\\

/j CUllillg
..!!..~or!-

10 Rock A11gulaJlty
J I Bri:;htness
12 Ccu:;olidal ion of I'artides
1 J Bottom Siu ObI! ibulion
11 SeoUl ing ,lIId Ih1'Osill..n

~5 Aquatic Veget:lllo~

ronL ~

caregory
-----

tJPI't::1I
n;\~r.s

I laml/orm Slopr
:l ~~:rs.s Wasrlng
3 DclJris JaUl I'olt:llrial
4 Ver".t3rlw Bank I'rote,tion

I.OWEN.
JlANKS

:, Channel Capa, II)'
(, Balik Rock CoIII"ll[
7 OIJ~lJllcti(1ns 10 I low

TABLE 67. Channel slobility evoluotion (pf.lIlkVc/', /975) with a conversion of the channel stobility rating to 0 reach
condition by stream type,

4
6
'I

-+1
~ I
h I
8

.,
,.~
1.)
'1
8
12

2

35

LEVEL III: ASSESSMENT OF STREAM CONDITION AND DEPARTURE

CHANNEL STABILITY (PFANKUCH) EVALUATION
AND STREAM. CLASSIFICATION SUMMARY (LEVEL Ill)
Category POOR
UPPER I Landform Slope Bank Slope Gradient 60%+ ~
BANKS 2 Mass Wasting Frequent or large causing sediment nearly year long or imminent danger of same. 12
3 Debris lam Potential Moder. to hca1 amounts. predom. larger sizes. @
4 Vegetative Bank Protection <50% density, ewer species and less vigor indicate poor,
disrontinuous and shallow root mass.
LOWER 5 Channel Capacity Inadequare. OVerbank flows commen. wm ratio >25 ~
BANKS 6 Bank Rock Content <20% rock fragments of gravel sizes. 1-3" or less.
7 Obstrualons to Flow Sediment traps full. channel migraoon occurring.
8 CUning Almost continuous cuts. some over 24' high. Failure of overhangs frequenL
9 Deposition Extensive deposits of predom. nne partides. Accelerated bar development (10)
BOTTOM 10 Rock Angularity Well rounded in all dimensions. suIfaces smooth. 4
It Brightness Predom. bright. 65%+ exposed or sroured surfaces. 4
12 Consollaatloll of Particles No packing evidenL Loose assoronent easUy moved. 8
13 Bottom Size Distribution Marked dlslIibution change. Stable materials 0-20%. ~
14 Scouring and Deposition More than 50% of the bottom in a state of nux or change nearly year long.
15 Aquatic VegClation Perennial types scarce or absent Yellow-green, short term bloom may be present
TOTAL lul. I
SlJeam Wlllth 13.e. x avg. dcptll 0:3 x mean vt!ocIty 1.<';)' =Q r.," ds
Gauge Ht Reach Gradient 0101'1 Stream OrdCl I Sinuosity Ratio
Width", /'I,L Depth '" '.), \. WID Ratio <.JS,~ Discharge (Qw) t,3)
Drainage Area ;).I~ valley Gradient O.C>I'1 SUeam Length 2.(,<; \laney Length ... 4l
Sinuosity /, I EnUeuchmenl Ralio 1,1 Length Meander (Lm) '" - I. <' Belt Width Ie, - '4
Sediment Supply Srream aed Stability Widtlt/Depth Ratio Condition
Extreme ,\ggradlngX NOflI13l I pS- I Stream
VCIY Hlg!tX Degrading High
High Stable Very High /{/ 'IYPe
Moderate I J ~ ~a::;ch
Low TOTAL SCORE for Reach E =G _+f_+P_=
Remarks ('.....h........J... hI" tL.I'l , L,.. ~, I r..~~r _ J,) 'V 4' from Ip,,,< I Reach
.
table Condition I
CONVERSION OF STABILITY RATING TO REACH CONDITION BY STREAM TYPE.
Stream 'IYPc Al 1\2 A3 A4 A5 A6 81 D2 83 B4 B5 B6
GOOD 38-43 38--43 54-90 60-95 60-95 SO-80 38-45 38-45 40-60 40-64 48-68 40-60
FAIR 44-47 44-47 91-129 96-132 96-142 81-110 46--58 46--58 61-78 65-84 69-88 61-78
POOR 48+ 48+ 130+ 133f- I43+- 111+ 59+ 59+ 79+ 85+ 89+ 79+
Stream 'J\rpe CI C2 C3 C4 C5 C6 00 D4 05 D6
GOOD 38-50 38-50 60-85 70-90 70-90 60-85 85-107 85-107 85-107 67-98
FAIR 51-61 5Hil 86--105 91-110 91-110 86-105 108-132 108-132 108-132 99-125
POOR 62+ 62+ 106+ 111+ 111+ 106+ 1:l3t 133+ 133+ 126-1
Stream 'J}rpe 0A3 OM OAS OA6 E3 FA E5 E6
GOOD 40-63 40-63 40-63 40-63 40-63 50-75 50-75 40-63
FAIR 64-86 64-86 64-86 64-86 64-86 76-96 76-96 64-86
POOR 87+ 87+ 87+ 87+ 87+ 97+ 97+ 87+
Stream 1YPe I Fl F2 f3 F4 (F5) F6 61 G2 G3 64 G5 G6
GOOD 60-85 60-85 85-11 0 85-110 9lJ:'f15 80-95 40-60 40-60 85-107 85-107 90-112 85-107
FAIR 86-105 86-105 111-125 111-125 116-130 96-11 0 61-78 61-78 108-120 108-120 113-125 108-120
POOR 106+ 106+- 126+ 126+ (13r, 111+ 79t 79+ 121+ 121+ 126+ 121+
"Gt:naalized relations.., ncai additicnal Level IV data to apand data baseftr vah'dation.

TABU: 6-7. Channel stability evaluation ... (continued)

L '1r\

36

Appendix C.-UT to Mitchell River Reference Reach Site Information.

Figure C.I.-Unnamed tributary to Mitchell River reference reach vicinity and drainage area
map, Yadkin River basin, Surry County.

~'-
&i-' ~
I I 0 steIll
bl laI~Cmcnt
,'.(U.WAM

Reference Reach Vicinity Map"
Unnamed Tributary to the Mitchell River
Surry County, North Carolina

Source:
United States Departmenl of the Interior, Geological Survey
Roaring Gap Quadrangle, 7.5 Minute Series (Topographic)

37

Figure C.2.-Unnamed tributary to Mitchell River reference reach soil map. The reference
reach flows through Bandana- Tate-Nikwasi complex (BaS) and Colvard and Suches (CsA) soils.

41
>-
g
0
U 0
~ 10
V
00
s:f
.-
m
~ 0
.0 lO+v aIJJ!~ ,'r 0
..... v
(1.)
;>
C2
s:::
.-
~ 99+€ ap!l8 - - ~- l - 0
10
>- 6v+€IOOd r M
..d'
(.) ",.}
~
~ [,
(1.) ~ r
(.) .f.# 0
s::: 'F~ 0
(1.) M
.....
~ ~
(1.)
..... : ~..
.....
(1.) .........
;> 4::
C2 0 --
10
N E
-
- """
(1.) ro c:
..r:: Q) III
(.) l.... tD
..... - -
.- w 0
~ ~ 0-
0)0
0 '1 0 c I-
..... 0
~ N 0 .
€6+ ~ IOOd ro
S Q)
.0 J, 0 :;
.1:: . ,j:~" c -
"""
..... ro c:
~ 0 - III
(1.) 10 W tD
~ ..- (5 ~
Q)
2 u
~
~ :J
(1.) C/)
..r:: 4 lD
..... 0 tii
~ ,): r- u 0 ~
0 . ~ -..- - ----.---- ------ ..-
(1.) 96+0 alJJ!~ V,
12 ;p
8 'f
0.. <. Qj
- ';\~. c:
~ . c:
s::: t' 0 III
.- .,. 10 ~
~ !L-~ ()
~ L€+O un~ .
.....
.51>
s:::
0
.....:l
I 0
M 10 0 10 0 10
0 0 m m co
U ..- ..-
(1.)
.....
~ (y) UO!leA813
00
~

39

Figure CA.-Riffle cross-section at station 0+96 on an unnamed tributary to Mitchell River
reference reach, Yadkin River basin, Surry County. The solid blue line represents the stream
channel bankfull elevation and the dashed blue line represents the flood prone elevation.

100
-
;S:
........
c
0
~
co
>
Q)
W
95

o Ground Points + Bankfull Indicators ~ Water Surface Points
Wbkf - 8.75 Dbkf. .92 Abkf ~ 8"04

105

90
o

10

20

30

40

50

60

70

Horizontal Distance (ft)

40

Figure C.5.-Riffle cross-section at station 4+02 on an unnamed tributary to Mitchell River
reference reach, Yadkin River basin, Surry County. The solid blue line represents the stream
channel bankfull elevation and the dashed blue line represents the flood prone elevation.

o Ground Points + Bankfull Indicators ... Water Surface Points
Wbkf - 12.1 Dbkf - .67 Abkf - 8.08

95

90
.-
~
-
c
0
:0:;
tU
>
Q)
W
85

80
o

20

30

40

50

60

Horizontal Distance (ft)

41

Figure C.6.-Pool cross-section at station 1 +93 on an unnamed tributary to Mitchell River
reference reach, Yadkin River basin, Surry County. The solid blue line represents the stream
channel bankfull elevation and the dashed blue line represents the flood prone elevation.

2
'-'

c
o
+::
~ 95
Q)
W

o Ground Points + Bankfull Indicators ,. Water Surface Points
Wbkf a 12.7 Dbkf . "6 Abkf - 10.1

100

90
o

10

20

30

40

50

60

Horizontal Distance (ft)

42

Figure C.7 .-Pool cross-section at station 3+49 on an unnamed tributary to Mitchell River
reference reach, Yadkin River basin, Surry County. The solid blue line represents the stream
channel bankfull elevation and the dashed blue line represents the flood prone elevation.

90
-
.a::
'-'
c
0
:0:;
m
>
Q)
W
85

o Ground Points + Bankfull Indicators l' Water Surface Points
Wbkf . 12"1 Dbkf - 1.03 Abkf . 12.5

95

80
o

30

40

10

20

Horizontal Distance (ft)

43

Figure C.8.-Reach pebble count data for an unnamed tributary to Mitchell River reference
reach, Yadkin River basin, Surry County.

100

80

~
Q)
c:
u::

60

-
c:
~
Q)
a.

40

20

o
0.1

10

100

1000

10000

Particle Size (mm)

Size Class Particle size (mm) in year sampled
Index Reference reach
D16 0.28
D35 6.47
D50 12.98
D84 77.98
D95 127.73
DIOO 361.99

44

Figure C.9.-Reach pavement and subpavement pebble count data for an unnamed tributary
to Mitchell River reference reach, Yadkin River basin, Surry County.

100
90 _
80
70 -
....
Q)
l:: 60
u::
....
l::
~ 50...
Q)
a.. 40
30
20
10
0
0.01 0.1 10
Particle Size (mm)

. Sub-pavement (SA)

. Pavement (SA)

100 1000

Size Class Partiele size (mm) in year sampled
Index Pavement Snb-pavement
DI6 52.13 4.15
D35 68.59 27.72
050 82.76 44.57
D84 114.88 103.09
D95 125.28 118.15
DlOo 130.00 125.00

45

Figure C.1 O.-Riffle pebble count data at station 0+96 for an unnamed tributary to Mitchell
River reference reach, Yadkin River basin, Surry County.

100

I
1000

I
10000

80

~
Q)
c:
u::

60

-
c:
~
Q)
a..

40

20

o
0.1

I
10

I
100

Particle Size (mm)

Size Class Particle size (mm) in year sampled
Index Reference reach
016 3.40
D35 13.41
D50 37.57
084 93"71
095 202.75
0100 2047.90

46

Figure C.tt.-Riffle pebble count data at station 4+02 for an unnamed tributary to Mitchell
River reference reach, Yadkin River basin, Surry County.

100

20

80

~
Q)
c: 60
u::
-
c:
8
~
Q)
0- -
40

o
0.1

10

100

1000

10000

Particle Size (mm)

Size Class Particle size (mm) in year sampled
Index Reference reach
016 6.79
D35 20.39
D50 37.32
084 100"91
095 150.65
DIOO 1023.95

47

Figure C.12,-Pfankuch stream assessment for an unnamed tributary to Mitchell River
reference reach site.

I

! I'J'I'UI
flANt.:;

LOW/'JI
I\i\NK/\

11(1'l'JXIM

IWI'l';1l
HANMl

/.Owr.n
BANKS

LEVEL III: ASSESSME~~T OF STREAVI CO~--JDITIOI'J AhlD DEPARTURE
,.... ---- - --"- --

Carer,olY

i.;mdlt'rnl Slpl'"
., Mm.:!: W.IMhJ}~
;\ 1l,'blll.j.1I11 PlIll'lllial
ol V.'1~f.ldfivt'I'-H1k ftlnh'dillll

t. Uwnnl'l (apatHy
(, Ilallk II.. k n"'tellr
7 ObMIlIClI\1/lr. to !'Iow

S\ Cutlitn~
(, ltt'PP~:11hHl

Hi jl.d "'''1'."1;1111)'
" I\ll<'htn('l:~
1;~ COIIGnllilllllOfl or I'mlld,'!.
J;\ Hflllmn m'IJ' Oi:<trihUlhH!
11 :;'lllllmr, /llld Ikl"'Sitlllll

11' Aqll~lJl V'1'.'1i1tll'1I

('lIlt'Wlry

CHANNEL STABILITY (PFANKUCII) EVALUATION
I . ... , AN~ ~T~EAMCL~SIFICATIO~ SUMMARY (LE~L Ill). J
I Reach LOcatJOll.L.A1 ~~..':.:C~'_" i -.">', '."', :-,-""Y:, ( C Date, Cr:.L!.JJ:=:.' ObS(!TVcrs\'v\ \l~ I I,')
. . 'I If;' lJ.
Stream 'I>1>C _~..._.. J-:, l __.....__________ ._____

[~ml - . 1 U~:;~~l:'IW. ~Il:k-~~;~::~:rr ..

I B^NKS 2 Mas.\ W'd!~lng Nil ~vldrnrr of JllISl or futurr 17llI!.!i W;'!;lmg
I 3 lldni:: I~m Potentlid Fmenli"II}' ilbsent from Imllledl~tt channel air"
I 1 VI'J.',t.illllvr llank Protection 9()~:! !,~I.lt drn:~~r.Ol ~"nd varielY 8l11:!J'(~ i< d::':J:~rllr.t noli buu.lllJg roo( 1II11!>!:.

I ).ow;:ii I. Chnnlld (:"PUfi(y ^lIIpJr for Jlre.~I1I. plll~ r,omr. inll'MI:Ol'B, I'l:'ak fk,wr. Ctllilillm'll, WIT) Iiltl" <7
I JlANIIS I, Balik I{tlrk Conlr.rlI (l!,'lIr-t with large an,,'ullll honJcllOf~. 12" j common
I 'l O!JnlflI(.1MU; tv Pluw Iwrhr. and log~ filmly lmhriltled, 1-1ow puw:m Wlt/M,ut mtlml; or dcpt-;ltion. :;(aIJJc bcd,
, Ii Cullin!: Lillie or nOlle, InflelJ. raw oonks It~;r. than (,'
i " 11t"f)bJ~hon I ,illle (If no l'~la'i',Cml'nt 01 mn.rc:r1 or pl. b.n~.

, B<.yrmM to ltock ^1l1:UJIll ilY :;fta'fl ,.~e; and 1'001lMS. pt.,nr surlarr5 10111-;'
I 11 1\1I!:htJl!':;~; SUlla..:f~, dllll, dalk III slllinrd t;rn n(J\ b:i1-:hl.
I l:~ CIlll'lulldalll'1! lit' !';ul" k.!; N,S()lI/'d Iii"'!> lJ!~ll'Y pa(~,cll m (>V!'llitpr,jllg,
J 3 lk,fItlJII };W' lllr.tl il>uUlIlI foil' !:i7,e change evidenf. Stable malt:r, !\() Il)(J'I;,
I H ~1"'lIIjll': arlllllf'l'll!;ilillll .,:"1/, orbl.~lom alkw:t1 hy Will: 01 t1"!llmilioll_
1/\ AIIIUIIl! V"I.:rtatl'H' ^JIlln.I;",; (;mwlh lIloM'.lIkl', ,lalk ",rIm J>c.cIIIIJal In /lwllt walt" U""

TOML

Goon

'I;'"f. :;lIlI"-' (;',I<I"'III;r.(1 01(>%
llllll'qucm, Mor.tly IWilled ovcr, low hllllll' I'''f1.!!tlO,1
I'IJ'~~'''(, frol I1lOfilly MlIidllWiSfi ~ntllilllt,,;.
'/U. ~JI)'!4t dt'n~i1y.r:~'~''l[~r .1~fK:d('s or Itn,s \'I~\H !;u)~~~r:;t lcm. (kmw ill {h.l~p font fHa~.s.

"'tlr'I/lldtr Ildllk ".",Ollw,.rille W/ll .,1110 x' J.~,
10 (':.'!\.. M.....tiv laoo.UI1r;ukJ':n 1(1' ,~'''l.'" (, 17."
Somt: plf:t;t~UI ';Ult.1nH rrm.tvt UlJ1,!; cur rtat:.; und mirwr pud.
filli!!I:, 0bNtl uctiour. 1II'Wt1 and h& hrm
~;nlll;~. lntrrmtth:nfly at ffllh.UfV''1'; fllld t"on~htttilm:.. Haw n.ll1k!; nlilV hl' LIP If) I:~"
Spill!.' lltW hm lnneftM.', ult':"tly fJ'f'JU fOOiUH' WitVt'L

l{t'llflC~d CI""(\Ir.aud ed,;r.-., SUrf.n"f~~; smnoltll /1:'1
Mt'lj>tl.v <InTI, hUI may h.wI- ,'.11;\\ IJIIght ~UI'I:".l'~'
Mml"'attly 1~ll'krd wllh '~'H1t CNerlllprUl!;.
I ti~tlihution ~hjft lir.hl 51..ihlc tn:'!l1 III SO HO%
~;, :<(I~.lIm'fll',1 :~'';1Jr III mn:~r.1iom; Ilnd whJ'lI: !:l"dr:: ~1t:l'i\f:ll.
~,i(lrnr: .kpw'.nipn '" pn('tl~;,
irmlHlon ^l$:aC' rtnmr; 1I\ low VClOclly no<l 1'''011111''''' Mill;<; hell" I"'.

rOTA 1 ;.'J

f:AfR

l.lJ1t1rmm :;1"1'0' Hank I;Japc !:r;ldlcm 40..60%
~ Ma~;': WilrlllllK l-r"oJllCIlI tlllmgc,lllll~jllr. r.r:~lImrlttllrillly .vl',ll \III1!:
=- Ilcobrl:: Jail] l'o(l'lltiul M(ld"'~tt to IM''IVY llm[l1ll1l~, IIllllitlv 1i1l~('J size::.
.j Vt'gctllllVl" Bant. f'rOl/'11k1ll <'&0 '!()% dl'usity, 1.,WI' Vll~'1 and fewcl !iP(~:I!'!' fr,'1II1l r.hallow,
.____~ __lImct.1ntlmJlJut. JOOl IllihfJ1i ~~.. ",_.___ _.... ,_~.

I, ('hal1l1cl Capatity
b 1\;lIlk I{('l(i\ (,'(lnlcnl
7 Obr;(Jut:uOIIG to '.1ow

8 ellll]ng
l} I)(~~I_

10 Rock AngularIty
11 nrl!:htlK'Ss
l;l Con:IOIidalion of Panic!c$
13 Bottom SiZc Dlstrihutlon
14 SalUTIng and Deposillon

'__~ 15 ^qtllltlr:.~UtUon

I wrroM

~--~~-......

IIRwly 111n1'1iIlS (l11!St'nl Jlr.llk:i (k'fil~i('JnllJ ovcrbullk n,~,ds wm raHo I [. to 2!\
:W-10% Wilh m()$( in tilt, 3-tr" dilt!lll'ler dass
M"d('f, rrt''1uent, unmahle obt;trnI1j(111' m"ve WIth high n"IV!; (';11151111\ hank
alltilll\ aml1100J liUlII[t,
SignifiUlnl CUI.'; 12-24" hij;h, Root mal ovt'rhanrfo Dnd SltlUghul!; evident
Mmler t1ep('.~lllt'n or new gPlveland u:urse ~itlld on old ~~ld r"'J~ll' new ham,

('arners and l'd~s weD founded In two dimensions
Mixture dull mId bright, w 35-65% mIxture rangl~.
Mostly loost atlllO!lmtml witb IlClllPlNlrent ovl'tlap
Model. t;hange In al%es, Stable /lI,1/1t'l'lals 20.50~,
30"50% an-efied, l>epos/ts 8. :;COUI at "bSlructjon~, constJiUions, and bends,
Some mIing of pools.
Pre~m but s.poltJ!!!!?~i: In I.liu:kwitler Season,,! ali.fU' L'T~h makes lock:l~ slick,

TOTAL

).
~,
(3)
())
.l

.,
4)
!'ii;

I
1
~~

.4
fl,
0)
7{'l
~- I .

<.4"
(.

"

/,

.~
,,'
,1"

I,
H
<~ )

;~

<I
VI>
1 . ~

..

I,
')
(.
p

:\
tJ
'"

12
I:'

3
I~_\
"(;
12
]8

:I
LU

TABl.E 6-7. Channel stability evaluation (PFcnkueh, 1975) with a conversion of the chonnel stability rating to 0 reach
condition by stream type,

48

,-EVEL III: ASSESSMENT OF STREAN\ CONDITION ,A.ND D~PARTURE

~
I

CHANNEL STABILITY (PFANKUCH) EVALUATION

AND STREAM CLASSIFICATION SUMMARY (LEVEL III)

category POOR

I Landform Slope Bank Slope Gradient 60%+
2 Mass Wasting Frequent or large causing sediment nearly year long or lnuninem danger of same.
3 Debris Jam Poteru.lai Moder, to heavy amounts, predom.larger sizes.
4 Vegetative Bank protectlon\ <509b density, fewer species and less vigor indlcalf poor.
. diGwntinuous and shallow root mass.

5 Channel Capaclt,Y Inadequate. Overbank flows c.nmmlll. wrv ratio :>25
6 Bank Rock Content <20% rock- fragments of gravel slm, 1-3" or less

UPPER
BANKS

8
12
8
12

LOWER
BANKS

"
B

7 Obstructions to Flow Sediment tripS full, chan:lel migration occurring. !
8 CUtting Almost continuous cuts, some O'm 24" hIgh. Failure of overhangs frequent. 16 I
9 Deposition ExtenSIVe deposits of predom, fine ;>articles, Accelerated bar development 16
BOTTOM 10 Rock Angularl1;y wen roundt..'lln all dimensions, 5UTfa::cs smooth. 4
11 Brightness Prt..'lom. bright, 65%+ exposed or scoilfed surfaces. 4
12 Consolidation of Particles No ~g evident. Loose assortm= moved, 8
13 Bottom SI1.t Distrlbution Mar diStribution change. Stable . 0-20%, 16
14 Scouring and DejlOsltion More than 50% of the bottom In a state of nux or change nearly year long, 24
15 Aquatic Vegetation Perennlaltypes scarce or absent. Yellow-green, short term bloom may be present 4
TOTAL. 01
I SlI'llIIlD WIdth x avg. deptb :If mun Vlclotity_._.'" a cfs
I
i Gauge lit l\.ucll Gl:adier.t _ Sll'ea.tn Or",_.___ Sinnnmty R.atio____ ... -
,
1 Width ... __ Depth... W /D Ralln Discl1arge (Qov)___

j Dtil.lnagIl .At ea
I

Valley Gfildlent

SttlllllD Length

valley I..ength

, Sinuoslty Entrenchment Rallo Length Meaader (Lm), Bell Width -..-.
~-
I
I Sedlment Supply Stream Bed Stability WidthlDepth Ratio COndition J2~
; ElW'eme -~-- Aggrading ~~._.- Nor:nlll II U I fo 1 Stream
i Very High De&radlni_ Higb
1111gb Stable 'krj High I" I'.' Jype
I W.odcl'lll.e_._ E~~G~+f_3-..ps;L", Is s- I pfankuch
i tow__ TOTAl. SCORE fer Reach Rating
RemIl1'ks__ - from [S;Ji Reach
- table ".,.,~ Condition
CONVERSION OF STABILITY RATING TO REACH CONDITION BY STREAM TYPE"
stream 'IVDe B4 1
At A2 A'J A4 AS A6 81 82 B3 I 85 56
GOOD 38--43 38-43 5+-90 6().95 60 95 50-80 3~ ~ I~ I~ 48-6S I 40-60 i
FAIR 44-47 44-47 91-129 96-132 96-142 81-110 46-58 46-58 J 69-813 i 61.78
POOR 48+ 48+ 130+ 133+ 143+ i 59+ 79+ 85-t 89+ I
111+ 59+ I i 79+
I Stream 'J\Ine Cl C2 CJ r-C4 C5 C6 D3 I 04 D5 D6 i
I GOOD 38-50 38-50 6()...85 'ro-9(V 70-90 60-85 85-107 85-107 85-107 67-98
iFAIR 51-61 51-61 86-105 91-110 91-110 86-105 108-132 108-132 , 108-132 99-125
I POOR , 62.f 62+ 106+ 111+ 111+ 106+ 133+ 133+ 133+ 126+
i Stream 1)'pe -...- --. --
DA3 DM M5 DAn E3 1* rs , E6
GOOD 40-63 40-63 40-63 I 40-63 40-63 so.. 75 50-75 40-63
FAIR 64-86 64-86 64-86!64-86 64-86 76-96 76-96 64-86 I
POOR 87+ 87t 87+ I 87+ 87+ 97+ 97.. 87+ I
Stream nrpe Fl F.l J'3 F4 f'5 f6 Gt G2 G3 G4 I G5 G6
GOOD 60-85 60-85 85-110 85.110 90..115 80-95 40-60 40.60 85-107 85-107 I 90-112 85.107
FAIR 86-105 86-105 1U -125 111-125 116-130 96-110 61-18 61-78 108- t20 108-120 1113-125 108-120
,POOR 106+ 106+ 126+ 126+ 131+ 111+ 79+ 79+ 121+ 121+ 126+ 121+
! "Genero.tiEed relations ... need additional L4VlIlV data to expand data basej'orva!idl1tion.

49

Appendix D.-Proposed In-Stream Structures

Figure D.l.- Typical bank grading cross-section for one or both banks and typical
revegetation plan.

,""'.
\'/,/IIIII/Nu.
\ "';;,,!;"'/",h
',I'll/lIllI/III/;
\ '/;I"I/IIII//h
','/;111111"11"
,"'/"";///1';"'.
\"/1'111'1''''''1//.
'......'~/,'/IIIII'/,
...........;...:...~",,;//....
------.....
....

Construct a bankfull bench
and re-shape banks on a I: I or
2: I slope.

Bankfull elevation \l

.'1/1111/11/11/11111/11//1/11/
//////1/////1/////////,/// ;'
"'1;/1/1111111"111111'/ I'
"/,/,,,,//////111//1// I'
/;//////;//;'/1////// ,
I///;'//,UIIII,'/III //
//1////////1,;1'/1' Ji'/
/~:..;.;.:-----_......
,

"11//1111//1

ut ~;~~~~~~~;
'///111/11"

Exi ting bank
Pro osed bank

~

~

Plant Rooted Trees, 2-6 ft tall

--

Plant Live Stakes and/or native shrubs

I;
{
i I
j f
I,
,

/Plant Herbaceous Vegetation

f f t.

50

Figure D.2.- Typical rock vane structure showing plan and cross-section views. NOTE:
There should be no gaps between the rocks in the rock vane structure. The rock vane should
have a 4% to 12% slope from the top of bankfull or inner berm bench to streambed" Rock size
should range from 4 fe to 18 ft3. Arm length will vary depending on size of stream.

Flow

PLAN VIEW

PLAN VIEW

Bankfull elevation

CROSS-SECTION VIEW

o Footer rocks

o Top rocks
. Bankfull bench

51

Figure D.3.- Typical log vane structure showing plan and cross-section views.

PLAN VIEW
PLAN VIEW

.
+
.~
~
.

~. 4t.

~Bankfull Elevation+ +

'\.

Flow

..

CROSS-SECTION VIEW

52

Figure D.4.- Typical root wad structure showing plan and cross section views. NOTE:
Footer logs should be >8 in, diameter and installed below the streambed. Root wads should be
8-14 ft long and > lOin" diameter. Large boulders should be placed in gaps between root wads.
Fill materials from the site should be placed behind the root wads and boulders, covered with an
erosion control mat and seeded and trees planted on top of the bench.

PLAN VIEW

Rankfull elevation

CROSS-SECTION VIEW

53

Figure D.6.- Typical cross-vane showing plan and cross-
section views. NOTE: There should be no gaps between the
rocks in the cross-vane. Rock size should range from 4 cu ft. to
18 cu ft.

PLAN VIEW

Scour hole

113 bottom width

..

~ ..

~

..

~

o Footer rocks

o Top rocks
-+ Bankfull bench

CROSS-SECTION VIEW

Bankfull elevation

54

Appendix. E.-Planned Erosion and Sediment Control Practices

Purpose

This document includes the following: the construction sequence, descriptions of erosion and
sediment control measures to be used, design details and specifications (Appendix E. Figures D.2
- D.5) of those measures. Erosion and sediment control plans are included on the plan view map
(Figure 11). Approximately 0.74 acre ofland will be disturbed; therefore a Certificate of Plan
Approval from the North Carolina Division of Land Resources, Land Quality Section is not
required.

Construction Sequence

1. Obtain plan approval and other applicable permits.
2. Stockpile sediment and erosion control materials on site.
3. Stake sensitive areas, construction limits and corridors as indicated on construction
plans.
4. Move heavy equipment on site and walk through entire project with contractor.
S. Install temporary gravel construction entrances, as needed.
6. Install sediment and erosion control measures around staging and stockpiling areas.
7. Haul boulders, root wads, and logs to the site for building stream structures.
8. Install temporary dikes and pumps necessary to dewater the portion of channel being
worked on each day, as necessary.
9. Project will be constructed by first replacing the CMP, enhancing the unnamed
tributary, and completing maintenance on Little Bugaboo Creek.
10. Sequence construction so that the Restore the unnamed tributaries dimension and profile
from the downstream end, working in upstream.
11. Soil disturbance will be limited to only what work can be accomplished and stabilized
on a daily basis.
12. Shape stream banks to design elevations and construct bankfull benches. Slope from the
back of the bankfull benches to existing ground elevation not to exceed 2:1. Install in-
stream structures. Cover disturbed ground with salvaged sod mats or seed, fertilize, and
cover with coir matting and/or straw mulch by the end of each work day.
13. Remove pumps and temporary dikes from within the stream channel at the end of each
day.
14. Fertilize, lime, seed, and mulch all remaining disturbed areas at the end of each day.
15. Upon completing a section, heavy equipment and pumps will be moved to the next
section using log mats to cross existing tributaries and ditches.
16. Install permanent fencing.
17. Upon completion of construction, all remaining disturbed areas will be repaired.
18. Remove all equipment and unused construction materials, including any trash or waste,
from project site.
19. Fertilize, lime, seed and mulch all remaining disturbed areas.
20. After site is stabilized, remove all temporary erosion control measures.
21. Install bare-root, container grown, and live stake plant material during the dormant
grOWIng season.

55

Planned Erosion and Sediment Control Practices

The following erosion and sediment control measures are, at a minimum, necessary to
control soil erosion and minimize the introduction of sediment and other pollutants to the stream
during construction at the Little Bugaboo Creek mitigation site:

The duration and extent of disturbances within any stream riparian zone will be minimized.
Staging areas and stockpiles will be located outside of the stream riparian zone whenever
possible. Work within the stream riparian zone will be sequenced to minimize the length of time
raw earth is exposed. All erosion control materials will be on hand before work commences.
Stream bank stabilization will be phased so that each day's work is completed, including
adequate ground cover.

Relocation of stream channels should be accomplished "in the dry" whenever possible. New
channels should be stabilized before stream flow is diverted into them. Flow should be diverted
around land disturbance in existing channels when practicable. Flow may be maintained in the
channel when in-stream structures such as rock vanes and cross vanes are installed or adjusted as
necessary. Equipment will work from the top of the stream bank whenever possible.

When existing woody vegetation is removed within the stream riparian zone, as when an
access road is opened to a stream, the buffer will be replanted with suitable woody vegetation.

Graded slopes and fills within the stream riparian zone (excluding road shoulders) shall be
protected with sod mats or a rolled erosion control product, bonded fiber matrix, or flexible
growth medium after seeding.

Cobble and boulder deposits will be removed from active stream channels only when
necessary and in the context of restoring the stream to a stable dimension, pattern, and profile.

Commission staff will be on site at all times directing construction activities. Efforts will be
made to minimize loose soil entering the stream during bank reshaping activities through the use
of coir logs.

Gravel Construction Entrance.-The existing 800 foot private gravel driveway, off Hoots
Road will be used as the construction entrance. Heavy equipment should be able to unload
directly into the pasture to minimize sediment from leaving the site. Due to the small amount of
traffic entering the site, the existing gravel road should provide an adequate area to remove
sediment. Additional gravel (2 to 3 inch coarse aggregate 6 inches deep 50 feet long) will be
added to the road if conditions warrant. This driveway is solely owned by the landowner.

Sediment Fence.-Sediment fencing will be installed around materials handling and
construction staging areas and along the top of the stream bank or toe of a hill where overland
flow may cause erosion on stream banks. This is to prevent sediment from entering the channel
(see Figure 3 for specifications). However, disturbed streambanks that are seeded and mulched
at the end of the day will not be required to have sediment fence installed along the top of bank.

56

Pump-around Operation.- The pump-around operation will be set up, as needed, for
dewatering a work area in Reach 3 and LHe that can be completed within one day. The pump-
around equipment will be removed from the channel at the end of each work day. Enhancement
work will only be done during normal base flow conditions.

Two impervious sandbag dikes will be installed at the upstream and downstream ends of the
section of stream that can be worked in one day (see Figure 4 for specifications). The stream
flow will be pumped around the work area. Water from within the work area will be pumped to
a sediment filtering device such as a dewatering basin, sediment bag, or other approved practice
and will dmin back into the channel below the downstream sandbag dike. Water will be allowed
back into the channel each day after construction is completed and stabilized.

Temporary Seeding and Matting.-Sod mats or seeding and matting will be used to control
erosion and minimize the production of sediment and other pollutants from entering water during
construction. After the streambank has been sloped it will be vegetated with sod mats removed
from the existing bank or seeded with a temporary and permanent seed mix, mulched with straw,
and covered with 700 weight coir fiber erosion control matting (see Figures 7 and 8 for coir
matting details and specifications). Additional disturbed areas will be reseeded with rye grain
(120 lb/acre) and with a native perennial grass/wildflower seed mix (25Ib/acre) and mulched
with straw at a rate of 1-2 tons per acre to cover at least 75% of the disturbed soil.

Vegetative Stabilization.-During construction permanent vegetation including sod mats,
native permanent seed mix, live stakes, and bare root and containerized trees and shrubs will be
planted within the conservation easement as outlined in the proposed improvement section.

Maintenance and Sediment Disposal.-All erosion and sediment control devices will be
inspected at regular intervals and immediately following storm events. Any damage to the
erosion and sediment control devices will be repaired immediately. Sediment removed from
erosion and sediment control devices will be disposed of in an upland area in such a manner that
further erosion and sedimentation will not occur.

Spill Containment. -All equipment supplied by the contractor will be in good working order
and not leaking any fluids that could contaminate the stream or property. In case of an accidental
spill of hazardous materials (hydraulic fluids, gas, oil) two Attack Pac emergency spill kits will
be on site during construction. Any spills of hazardous materials will be cleaned up immediately
and contaminated soils disposed of according to state regulations.

57

Figure E.1.-Temporary gravel construction entrance/exit detail drawing and specifications.

/

/

'])0 /
\0
s",(.I
~~'O/

General notes:
1. Clear the entrance and exit area of all vegetation, roots, and other objectionable material
and properly grade it.
2. Entrance/exit(s) should be located to provide utilization by all construction vehicles.
3. Must be maintained in a condition which will prevent tracking or direct flow of mud onto
streets. Periodic top dressing with stone may be necessary.
4. Any material tracked onto the roadway must be cleaned up immediately.
5. Gravel entrance shall be located at all points of ingress and egress until construction is
completed. Frequent checks of the device and timely maintenance must be provided.
6. Geotextile filter fabric to be placed beneath stone to improve stability of the foundation.

58

Figure E.2.-Sediment fence detail drawing and specifications.

8' max, .tandord .trel h fabrIC with Wire fenGC
6' m(J)C, edra .trength obrlc without WII'& fence

Layout View

~

24"

1-

1

18-24"!

W,re
fence

1

Cr055-Soction
Viaw

Natural
ground
L

~

General notes
1. Drive six feet tall steel post 24 inches into the ground and space six feet apart.
2. Excavate an 8" deep by 4" wide trench uphill along the line of posts.
3. Attach extra strength fabric to the posts, on the upslope side, using wire or plastic zip ties
with a minimum of 50 pound tensile strength.
4. Extend the fabric eight inches below grade and four inches out in the trench.
5. When joints are necessary, securely fasten the filter cloth only at support post with four
feet minimum overlap to the next post.
6. Back fill the trench and compact the soil firmly to anchor the bottom of the silt fence so
that runoff is forced to go through the fence and cannot go under it.
7. Use a synthetic filter fabric of at least 95% by weight of polyolefin or polyester, which is
certified by the manufacturer or supplier as conforming to the requirements in ASTM D
6461.
8. Synthetic filter fabric should contain ultraviolet ray inhibitors and stabilizers to provide a
minimum of 6 months of expected usable construction life at a temperature range of 0 to
1200 F.

59

Figure E.3.-Pump-around detail drawing and specifications.

'" ~TIL. LING BASIN OR
~EDIMENT BAG
'""

PLAN VIEW

DISCHARGE HOSES.
" ~;..

(STREAM DIVERSION
PUMPS
P / INTAKE HOSE

..', .
" -:~,...4_".
/

j S;':f~' ~;::<. -WORK ARrA .

L,MPS SIIOlll D "NGTlI NOI 10
DISCHARGE ONTO A Excn () THAT
STAOILlZ[[l OANK WHICH CAN OE
OR DI:;~~II-'AIOR COMPLE IFD IN ONE
(MADE OF RIP J~AP, DAY
SANDBAGS, OH
OTHER AWROVfD
MAlERIAI) SECTION A-A

FLOW
\. J __.r-

LSUMP 1101.[ OR
POOl (12" 10 18"
DFf P ;' DIA.)

IMPHNl01JS
SHFTTING

WORK

A";~ ~~L~~700~ I

CROSS SECtiON OF
SANDBAG DIK[

GtNlKAl NO! t:;,

1. INSTALL PUMP AND TEMPORARY HJ:XIBLE HOSE AT THE UPSTREAM END or CONSIRUCTION AREA
2 INSTAll STilLING BASIN OR [QUIP FLEXIBLE HOSE WllH THE SEDIMENT BAG II' NEE DI::D, SJABILI7f
P/PF OUTLET TO PROTECT BANK AGAINST SCOUR AND EROSION.
3. PI ACF UPSTREAM IMPERVIOUS DIKE AND BEGIN PUMPING FOR THE SIRF AM DIVERSION,
4, PLACE DOWNSTREAM IMPERVIOUS DIKF AND PUMPING APPARATUS, DEWATER THI- WORK ARfA INlO
lHf STILLING BASIN OR [QUIP HOSE WITH THF SEDIMENT BAG, DEWAIl:.Rf:.D Ar~[A SHALL EOUAI 10
ONE DAY'S WORK.
5. PERF"ORM STREAM RESIORATION WQRK ACCORDING TO PLANS.
6. REMOVE ANY ACCUMULATED SILT atroRE REMOVAL OF IMPERVIOUS DIKES. REMOVE ALL FQUIPMENl
INCLUDING DIKlS. (DOWNSTRFAM IMPERVIOUS DIKE r1HS'I).
7. ALL CRADING AND STAB I LILA liON MUST BE COMPLETED IN ONE DAY WITHIN THL PUMP-AROUND AREA
(WlrHIN THE IMPERVIOUS DIKES) THE IMPERVIOUS DIKE LOCATIONS AS SHOWN ON THE PLANS
SHOW ONLYIHF UPPER AND IOWrR FXTFNT OF WORK ON THE STRFAM SFGMFNT THF
CONTRACTOR IS RESPONSIBLE FOR DETERMINING THE LOCATION OF THE IMPERVIOUS DIKES
PLACEMENT FOR EACH DAY'S WORK
8" REMOVE STILLING BASIN(S) IF APPLICABLE. STABILIZE DISTURBED AREA WITH SEED AND MULCH. AS
SOON AS PRACTICAL.

SEDIMENT BAG

1./1' IV-H, t,'Ullj~~P

!IIJM\' Ili!".!

!i,1\',', ^ HIi'I(^l III{
t,lll, .'t (\1,' !,jt\.', I l't^\!
M,(,III (,Ail Ifi' lilil ',I

I

I
I~

]'.' \..1:1'1.

'I'

',llil\H N I i il Ii li/\J.

, 11 n f.~)'

, H J', I M I , I ,'~}\ , I , Hht , iii A I I)i 'I j , !f-li i\J;jj\, Vi I, I " I I I'J( I Jt 1-."','1 illl: i I ',\I:: " ,II . ~ 1\
'.
'h'j , :.. H 'I I , I, I\f:t IA- lid : !'( : ,I' "' L I " I'll III ,t. I I I II , I II II' I , '1 I " , );'f'. 1 " '. , " td 1 I , II qf\i.
,
"'I t, ~ If :~ t. VI I \1.1 I , !l') (11" 'I it 1 ~ I MI"qMI. 'Nt, I I I I I , l'N I Iii: , h I If! I :1.:' M I 1\1 , 1\ I I II I ~ A,'

H,ll. t, II,; I t'~\lj 'I I; tjl', i ;:rlf.'l ~,' IlITf l \ j '{.~ :Jll ! ~ fl ff i' t f"'-,_1f I.:,
,\ I l\ Iii A' ,'I/d 'I I l' A II . iI IIW ,'A II Will V AI!' 1>' 1'1 II' ''.1'1'' ,'II I!"
fV\" ^1-lll t.,MOllf')l I.f ,1\1I~ht.1j ifl.L!;^ld,I,J HIIII I,i! Pl\:,.lJIf id
,f/'dH~ \".~(,;P llfl i'l\; 1\I"!ll illl [HflJi lIf ifH I;f IJi.} ~'il I
l\\'l';ll'; \J-.I '11' (I ,',IV: :I',l.' I/\if' 1.j;!'lll11HI ~Vl \1 \It~!!,~li:l
Id~,'t\!1;f ,!\pld'l rll f' \1(1' !',II,^.III\.~IH; .r(,!\!

'.

\ !1',r'():"~1 i"j}:VI ',-j" I"\^r-; 1\
I,! itl ! I 'I! ! I I'll if .1\ I

'iil;"! ( I; II
1 rh j ,J I,...h:\jiq~

i III : '. ,'1 ,IIi r. :

,~, ,
I" 1

v;',;d'

i\', ~"T .

I .j /II! I;Vi W /\1 ~ j' Ii'
I.' "I ',1111/0.1111' II,A"
ill ' ,I IIlI :Iii I. ',,,'. I
,i!1 I;:';' 1;1 '.
11 I 'I;! vr rJ I I ~/\I,

,'.'y': ", ,'.t':1

:,L\Y I~~' Ii ; 1-.11 I,'j /\11:'

i ',,\

60

.,

IliI
:11i I:

61

Figure DA.-Erosion control matting installation details and specifications.

COl'T1fl8Cled
~ bAc::kf,11

Plant Rooted Trees" 2-6 ft tall

Plant Live Stakes and/or native shrubs

---------

General Notes:
1. Apply temporary and permanent seed mixture, fertilizer, and lime to disturbed soils.
2. Apply mulch at a rate of one to two tons per acre. No more than 25% of the ground
surface should be visible after application.
3. Anchor mulch using 700g/m2 coir matting to resist wind and runoff.
4. To secure the matting, bury the upslope end in a trench no less than six inches deep,
cover with soil, and tamp firmly. Do not stretch the net during application.
5. Use wood stakes across the top, spacing every 12 inches and every 3 feet around the
edges and bottom. Each strip of matting should be staked down the middle every three
feet.
6. Where two strips are laid side by side the adjacent edges should be overlapped three
inches and staked together.

Figure E.5.-Coir matting (700 glm2) specifications

SKB India Co. . Erosion Control Products - Coir Matting

CF~ 700 Mat (7QOilA\VD .-,.2Q~sW

This medium weight matting is used for specific areas that require stronger
matting and tighter weave to hold 1:2 slopes, or the bottoms of excessive
watercourse pipe outflows, swale bottoms, stabilization of slope tops and
stream embankments. Durability depends on conditions. usually is
biodegradable in 2+ years.

Size:
6.5ft w x 164ft 1-12Osq yd (2m x 50m = lOOsqm)
10ft wx 164ft I"" 180sq yd (3m x 50m "'" ISOsqm)
13ft w x 164ft I'" 240sq yd (4m x SOlD = 2oosqm)

Approx, Weight:
150lbs (68kg)
22SIbs (I 02kg)
300lbs (136kg)

1f(".ftIII~ 'ar Pricin,

62

Page 1 of 1

Wt.~700g/sqm - 2050z % open area ~ 48% (calculated)
Test Methocf...ASTMD 3776 for wt. Recommended slope - > 1:2
Wet Tensile Strength ~ 14881bslft Recommended flow - 12.Ofps
Test Method ASTMD 4595 for Wet Tensile Strength Recommended Shear Stress ~ 4.5lbslsq ft
"C" Factor - 0.002

63

Appendix F.-NRCS Revised North Carolina Rural Regional Hydraulic Geometry Curve
Data.

Revised NC Rural Curve (Draft
3/2006)

ca 1000
!
<C

-
ca
c
o
..
u
CD
fI/
tn
tn
e
o

10

-~...- - - -
,
,.- n
J ,.
~
"..
I

100

1

Y = 15_601JxO.7516
R2 = 0.9967

1 10 100

Drainage Area

1000

~

64

Revised NC Rural Curve (Draft 3/2006)

10000

10

~.~._-- ." "._~ .-- - -- .." -- ., ~..". -. -- -'^'. .. -
. ...."....
""
III"l'"
D I~ -
",. '.
", ."

CD 1 000
en
..
as
.c
u
tn
.-
C

100

1
Y = 57.995\'0.7695 1 10
l uR2 __?99~~______Draina~~ Are~__

100

I
I
!

1:0J