20071134 Ver 3_Mitigation Plans_20070202

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STREAM MITIGATION PLAN
US HIGHWAY 19, R-2518B
ON-SITE MITIGATION
YANCEY COUNTY, NORTH CAROLINA
WBS ELEMENT: 34445.3.1
LSC NUMBER: 6300013251
TIP NUMBER: R-2518WM
Prepared for:
NORTH CAROLINA DEPARTMENT OF TRANSPORTATION
PROJECT DEVELOPMENT AND ENVIRONMENTAL
ANALYSIS BRANCH
RALEIGH, NORTH CAROLINA
I _W ~;~~ sC~Zc~
YID
FEBRUARY 2007

TABLE OF CONTENTS
1.0 INTRODUCTION ........................................................................................................................... 1
2.0 GOALS AND OBJECTIVES .......................................................................................................... 1
3.0 LOCATION INFORMATION ........................................................................................................ 2
4.0 GENERAL WATERSHED INFORMATION ................................................................................ 9
~~ 5.0 EXISTING CONDITIONS ........................................ 10
6.0 FEDERALLY PROTECTED SPECIES ....................................................:.................................. 11
R 7.0 STREAM REFERENCE RESTORATION STUDIES ................................................................. 12
8.0 STREAM MITIGATION PLAN .................................................................................................. 14
9.0 STREAM PERFORMANCE CRITERIA AND MONITORING PLAN ..................................... 16
10.0 MITIGATION SUMMARY .........................:............................................................................... 16
11.0 REFERENCES .............................................................................................................................. 16

FIGURES
FIGURE 1. VICINITY MAP
3 FIGURE 2A. SOIL MAP SITE 1
FIGURE 2B. SOIL MAP SITE 3
FIGURE 2C. SOIL MAP SITE 4
FIGURE 2D. SOIL MAP SITE 8
FIGURE 2E. SOIL MAP SITE 11
FIGURE 2F. SOIL MAP SITE 12
FIGURE 3. COMPARISON OF REGIONAL CURVE INFORMATION FOR PROJECT REACHES
TABLES
TABLE 1. STREAM INFORMATION
-" TABLE 2. SITE LOCATION INFORMATION
TABLE 3. DRAINAGE AREAS FOR PROJECT REACHES
TABLE 4. FEDERALLY PROTECTED SPECIES FOR YANCEY COUNTY
TABLE 5. MITIGATION SUMMARY
APPENDICES
APPENDIX A. REFERENCE REACH STREAM DATA
APPENDIX B. MORPHOLOGICAL CHARACTERISTICS OF PROPOSED STREAMS
APPENDIX C. SEDIMENT TRANSPORT CALCULATIONS
APPENDIX D. RIPARIAN PLANTING PLAN AND SPECIFICATIONS
APPENDIX E. PHOTOGRAPHS
i

1.0 INTRODUCTION
The North Carolina Department of Transportation (NCDOT) plans to use on-site stream mitigation to
offset unavoidable impacts to existing streams from the widening and relocation of US Highway 19 (R-
2518B) in Yancey County. The mitigation project will provide approximately 851inear meters (2791inear
feet) of stream restoration, and 1,564 linear meters (5,131 linear feet) of stream enhancement in the
French Broad River Basin.
The project involves six sites as shown in Figure 1. Twelve potential sites were initially identified during
-- the project feasibility study; however, six of the sites were not pursued due to site limitations. The six
remaining sites (Sites 1, 3, 4, 8, 11, and 12) are described in this document. The sites are located along
the US Highway 19 corridor in Yancey County, between the Madison-Yancey County line at Ivy Gap
east to Burnsville. The sites lie in the French Broad River watershed within North Carolina Division of
Water Quality (NCDWQ) sub-basin 04-03-07. Sites 1, 3, 4 and 81ie within US Geological Survey
(USGS) hydrologic unit (HU) 06010108080020, while sites 11 and 121ie within USGS HU
06010108070010.
All of the stream sites are shown as perennial blue-line streams on the USGS topographic quadrangle.
The total existing length of project stream reaches is approximately 1,649 meters (5,410 feet). A
summary of the stream locations, mitigation approaches, and lengths are provided in Table 1.
TABLE 1. STREAM INFORMATION
1~Iitibat~on ~~ ~
,, ~ 1~~ipr~ori~nate Road. ~ ~=~ ~ ilLhgahon Type :~ Lengtlx m (ft) ~,
Site 1 114+50 to 120+10 Enhancement 533 1,749
Site 3 124+43 to 127+18 Enhancement 301 987
Site 4 135+60 to 138+OS Enhancement 248 814
Site 8 175+65 to 178+50 Enhancement 304 997
Site 11 207+64 to 208+50 Restoration 85 279
Site 12 223+66 to 225+46 Enhancement 178 584
2.0 GOAL5 AND OBJECTIVES
The specific goals for the R-2518B mitigation project are as follows:
• Restore and/or enhance 1,649 meters (5,410 feet) of stream.
• Improve floodplain function by matching floodplain elevation with bankfull stage.
• Establish native stream bank and floodplain vegetation.
• Improve water quality in the French Broad River watershed by reducing sediment and nutrient inputs.
• Improve aquatic and riparian habitat by creating deeper pools and areas of re-aeration, planting a
riparian buffer, and reducing bank erosion.

Site 1
Site 4
Site 12
Site 8
Site 11
Site 3
~~
Yancey Co.
`s~~~~`'~* Project Development and
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Figure 1. Project Vicinity Map
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y.~,a~~,,,~ 0 50 10Meters R-25186, Site 12

3.0 LOCATION INFORMATION
The R-2518B mitigation sites are located along the US Highway 19 corridor in Yancey County, between
the Madison-Yancey County line at Ivy Gap east to Burnsville. The sites lie in the French Broad River
watershed within NCDWQ sub-basin 04-03-07. Sites 1 through 8 lie within USGS HU 06010108080020,
while sites 11 and 121ie within USGS HU 06010108070010. Figure 1 shows the site locations for the
various project reaches. Table 2 provides the NCDWQ Stream Classifications of the proposed mitigation
reaches.
TABLE 2. SITE LOCATION INFORMATION
Site Approximate Roadway Stream Stream Index
Name Station Stream Name Classification Number
Site 1 114+50 to 120+10 Bald Creek C 7-3-22
Site 3 124+43 to 127+18 Bald Creek C 7-3-22
Site 4 135+60 to 138+OS Bald Creek C 7-3-22
Site 8 175+65 to 178+50 Bald Creek C 7-3-22
Site 11 207+64 to 208+50 Phi s Creek C; Tr 7-3-20
Site 12 223+66 to 225+46 UT to Cane

River C; Tr N/A
4.0 GENERAL WATERSHED INFORMATION
The watersheds for the project reaches are primarily rural, ranging from low density residential to
agricultural land uses. The watersheds are estimated to be less than 15 percent residential and
commercial development, with the remainder agriculture and forest. Few changes in land use are
expected over the next 10 years. Watershed drainage areas are summarized in Table 3 for the project
sites.
TABLF. 3. nRAiNAGF, ARF,AS FnR PRn.iF,CT RF,ACHF.~
Site
Name
Stream Name Drainage Area, km
(miz)
1 Bald Creek 9.8 3.8
3 Bald Creek 10.9 4.2
4 Bald Creek 30.6 11.8
8 Bald Creek 44.3 17.1
11 Phi s Creek 3.6 1.4
12 UT to Cane River 1.8 0.

9

5.0 EXISTING CONDITIONS
A discussion of the existing conditions for each project stream site is provided in the sections that follow.
Existing condition geomorphology parameters and measurements are provided in Appendix B.
5.1 SITE 1
Bald Creek flows through Site 1 in a relatively straight pattern along the toe of a mountain slope.
As a result, the right bank of the stream is very steep and wooded. The left bank of the stream
ranges from steep and eroding in some localized areas (primarily at the beginning of the reach), to
stable and vegetated with primarily herbaceous species. The stream is classified as a Rosgen B3
stream type through this reach and is relatively stable in most areas. The existing right-of-way
fence runs along the left bank at a distance of 4.6 - 9 meters (15 - 30 feet) parallel to the stream.
Three ephemeral stormwater channels connect from drainage culverts beneath US Highway 19 to
the existing stream from the left bank. The riffle/pool ratio of the stream is approximately 60/40
and the streambed consists mainly of silt, gravel and cobble.
.. 5.2 SITE 3
Bald Creek flows through Site 3 and is similar in nature to Site 1. Like Site 1, the stream is
classified as a B3 stream type through this reach, is relatively stable in most areas, and is bounded
by a mountain slope along the right bank. Much of the left bank is also a steep bank, with NC
Route 1202 along the top of the slope. Cattle have had access to this reach in the past and, as a
result, stream side vegetation has been cleared and impacted more than Site 1. Midway through
the reach, there is a pinch point in the valley and rip-rap has been placed along the left bank to
protect the slope. The stream is relatively stable, except for one bend near the end of the reach,
where the stream has become overly wide and the right bank is unstable, most likely due to cattle
access.
Some localized areas containing privet and multiflora rose were identified along the reach. The
streambed consists mainly of gravel and cobble, with some fine sediment.
5.3 SITE 4
Bald Creek flows through Site 4 and is less steep than Sites 1 or 3. The stream is classified as a
C4 and is straight along the reach with the exception of one bend to the right near the end of the
reach. Near the end of the reach, the stream becomes more confined by the valley and bedrock
outcrops are evident and the stream type changes to a B4c. Along the upper portion of the reach,
the stream is bordered by residential yards along the left bank. In this area, the stream has been
channelized and appears to be overly wide. As a result, there are few deep pools in this reach.
Streamside vegetation, especially along the left bank, is relatively sparse, with some alder clumps
along the toe of the stream channel.
The riffle/pool ratio of Bald Creek is approximately 80/20 and the streambed consists mainly of
gravel and cobble with fine sediment.
5.4 SITE S
Bald Creek flows through Site 8 which is bordered by a cultivated agriculture field on the left
bank. Downstream of the US Highway 19 culverts at the beginning of the reach, the left bank is
vertical and moderately unstable. Banks are relatively steep along the entire reach, with localized
~' areas of bank instability. Streamside vegetation consists of sparse woody species and thick
herbaceous vegetation. The stream is classified as an E4, however the reach is relatively straight
- due to past channelization.
'~
10
;,

The riffle/pool ratio for Bald Creek is approximately 70/30 and the streambed consists mainly of
sand, gravel and cobble.
5.5 SITE 11
Phipps Creek flows through Site 11. The stream flows onto the proposed mitigation site from
adjacent pasture land. The stream is highly incised and is classified as an E4b/G4, based on
surveyed information. Streambanks along the reach are approximately 1.5 - 1.8 meters (5 - 6
feet) in height and generally unstable along most of the reach. The stream banks in this section
contain very few trees and are mostly free of vegetation. Throughout the site there are relatively
few pools and many riffles. The streambed consists mainly of silt, sand, and gravel.
5.6 SITE 12
An unnamed tributary to the Cane River flows through Site 12, parallel to US Highway 19. The
stream has been channelized in the past; as a result the stream is classified as a straight B4/G4
stream type. While the banks of the stream are high, the stream is moderately stable. The
stability is most likely due to the large amount of rock found in the stream on both banks, which
appears to be a combination of natural material and rip rap which was applied to the banks in the
past. A single line of trees is present along the left bank; however some of these trees have fallen
into the channel, forming blockages and debris jams. The riffle/pool ratio for Site 12 is
approximately 70/30 and the streambed consists mainly of sand, gravel and cobble. The pools in
the reach are relatively shallow.
6.0 FEDERALLY PROTECTED SPECIES
There are ten federally threatened or endangered species identified for Yancey County, as listed in Table
4. Potential habitat does exist within the project area for Virginia spiraea and the Appalachian elktoe;
however, these species are typically associated with stream systems larger than those proposed for
mitigation practices in this document. Before in-stream work is conducted, surveys for these species will
be conducted by NCDOT.
TABLE 4. FEDERALLY PROTECTED SPECIES FOR YANCEY COUNTY
Famil~~
, ~,
~ ~cient~fic Name Coiiunon Name `.- Federal
' _State _
~ $iological„
.
:
x~. ~-,: _ Status Statt~s Concldsion
Vertehrafes
Glaucomys Carolina northern
Sciuridae sabrinus .flying squirrel E E No Effect
coloratus
Corynorhinus
Vespertilionidae townsendii Virginia big-eared bat E E No Effect
vir inianus
Emydidae Glyptemys Bog turtle T(S/A) T Not Applicable
muhlenbergii
Felidae Puma concolor Eastern cougar E E No Effect
cougar
11

1 ~
Vascular Plants ~ - x~ + f ~ + "~~~''~~ j

~ . ~ r?;aiy~ C'
r,
Rosaceae Geum radiattem Spreading avens E E-SC No Effect
Rubiaceae Houstonia Roan mountain bluet E E No Effect
montana
Not Likely to

Rosaceae Spiraea
Virginia spiraea
T
E Adversely
virginiana Affect /
Unresolved
Nnn-VascidarPlants ~ `~ .~ ~ ~~=~"
~. ~.
Gymnoderma
Cladoniaceae
lineare Rock gnome lichen E T No Effect
lnvertehi•ates ~ ~ ~ ,
Not Likely to
Alasmidonta Adversely
Unionidae raveneliana Appalachian elktoe E E Affect /
Unresolved
Microhextcra
Dipluridae Spruce-fir moss spider E SR No Effect
montivaga
Notes:
E An Endangered species is one whose continued existence as a viable component of the state's flora or fauna
is determined to be in jeopardy.
T Threatened
PE Proposed Endangered
PT Proposed Threatened
PD These species have been proposed for delisting from the curren t status.
FSC Federal Species of Concern
SC A Special Concern species is one that requires monitoring but may be taken or collected and sold under
regulations adopted under the provisions of Article 25 of Chapter 113 of the General Statcetes (animals) and
the Plant Protection and Conservation Act (plants).
SR A Significantly Rare species is not listed as "E, " "T, " or "SC, "but which exists i-l the state in small
numbers and has been determined to need monitorin .
7.0 STREAM REFERENCE RESTORATION STUDIES
A reference reach is a stream segment that represents a stable channel within a particular valley
morphology. Astable stream is defined as a stream, which over time and in the present climate transports
the flows and sediment produced by its watershed in such a manner that the dimension, pattern, and
profile are maintained without either aggrading or degrading (Rosgen, 1996, 1998).
The methodology used for the reference reach analysis consisted of the following tasks: (1) identify
_, reference quality sections of the project reaches that could be used for dimension and/or pattern analysis,
_ (2) identify nearby reference reaches that can be used to provide pattern data, if on-site reference reaches
12

cannot provide this data, (3) survey and classify the stream morphology for both on-site and off-site
reference reaches, and (4) develop dimensionless ratios based on reference reach data and past project
data under similar morphological conditions.
Several locations were identified within the project reaches where stable bankfull features had developed
and provided information regarding bankfull dimension. These locations were identified by the presence
of a consistent bankfull indicator, typically a well formed bankfull bench, and stable, vegetated stream
banks. Cross-section surveys were conducted in these locations to evaluate stream dimension. The
bankfull cross-section areas were then plotted versus drainage area and compared to published Mountain
regional curve data, provided by the North Carolina Stream Restoration Institute (SRI).
The project site is located in a low rainfall hydrologic sub-region within the mountain physiographic
province of western North Carolina. In a previous NCDOT mitigation report for project R-2518A, a
project located several miles from the sites described here, Hayes, Seay, Mattern &Mattern, Inc.
(HSMM) reported that streams within the area exhibited smaller bankfull cross-sectional areas than would
be predicted by the SRI mountain regional curve. Data collected from the R-2518B site also follows the
same trend indicated by the R-2518A report, as illustrated in Figure 3. Therefore, the curve developed
with data from both the R-2518A and R-2518B projects (Figure 3) was used to predict and verify bankfull
cross sectional areas of the proposed mitigation reaches.
1000

NC AA
t
i
R
i
l C SR
•
oun
a
n
eg
ona
urve (
q
~. ^ Buck R-25186 Data
tS
N
1
0 • HSAMI R-2518A Data
Power (NC Nbuntain Regonal Curve (SRS)
0
- - - - Fbw er (Buck R-25186 Data)

a

w ~•
X
10
•
'+ ~ -

c
ea
m

1
0.1 1 10 100
Drainage Area (Sq. mi)
FIGURE 3. COMPARISON OF REGIONAL CURVE INFORMATION FOR PROJECT
REACHES.
The majority of the work proposed for this project will consist of enhancement approaches, with the
exception of Site 11. For enhancement reaches, the work will consist primarily of installing in-stream
__ structures to improve habitat and stability, conducting bank stabilization in areas of need, and planting
riparian vegetation. The locations of structures in these reaches were determined by areas of degraded in-
stream habitat or areas that require structures to aid in stabilization. Therefore, no reference reach
information was required for these reaches.
:, ~ For Site 11, the reach will be designed as a "B" channel, due to its relatively high slope (2.3 percent). The
design width to depth ratio (W/D = 15) is based on the width to depth ratios observed from relatively
~- stable cross-sections on Sites 1 and 3, which are also "B" channels. The placement of grade control cross-
vanes was based on the need to control stream gradient and provide appropriate in-stream habitat.
13

Shear stresses were calculated for Site 11 to determine the particle size that will be mobilized by the
stream. Sediment transport calculations were not completed for other reaches, since all other reaches will
be addressed by enhancement approaches that will not affect the stream's ability to move sediment. The
calculations for Site 11 are provided in Appendix C. The data show that the shear stresses for the
proposed design will be able to move the bed material of the streams. Since the calculated critical shear
>M and critical depths are less than those proposed for the design conditions, grade control structures will be
incorporated into the design to ensure against downcutting of the streambed.
8.0 STREAM MITIGATION PLAN
The stream mitigation plan for each of the six project sites is described in the sections that follow.
Detailed plan sheets are being provided to NCDOT with the submittal of this report.
8.1 SITE 1
The project reach for Site 1 is a fairly stable B3 channel; however, the reach is dominated by
shallow riffles and pools. Enhancement of the reach will include the installation of several in-
stream cross-vane structures to improve habitat diversity, and planting of the riparian buffer zone.
Several areas of multiflora rose were noted along the reach and will be treated by NCDOT prior
to construction.
The work described in this section and shown in the project plan sheets would qualify as
Enhancement Level II under the Apri12003 US Army Corps of Engineers (USAGE) and
NCDWQ Stream Mitigation Guidelines. Due to the width of the available right-of-way along the
stream, buffer widths in excess of the required 9 meters (30 feet) will be established in many
areas.
8.2 SITE 3
The project reach is similar in comparison to Site 1. The reach is a relatively stable B3 channel.
The reach can be addressed by the establishment of a buffer, stabilization of localized areas,
placement of several in-stream structures to improve habitat, and exclusion of cattle. Near the
middle part of the reach, there is a section of overly wide channel which will be narrowed and
stabilized by channel reconfiguration and the placement of several cross-vanes. Several areas of
privet and multiflora rose were noted along the lower portion of the reach. NCDOT will treat
multiflora rose and privet areas prior to construction.
The work described in this section and shown in the project plan sheets would qualify primarily
as Enhancement Level II under the Apri12003 USAGE and NCDWQ Stream Mitigation
Guidelines. The middle portion of the reach, where channel dimension and profile will be
addressed, would be considered as Enhancement Level I. Due to the width of the available right-
of-way along the stream, buffer widths in excess of the required 9 meters (30 feet) will be
. established in many areas. A section of the right streambank from approximate station 12+10 to
13+01 will have a buffer width of approximately 8 to 9 meters (25 to 30 feet).
8.3 SITE 4
Through Site 4, Bald Creek has less slope than the two upstream sites (Sites 1 and 3). The reach
is characterized as a C4 channel in the upstream portions, and changes to a B4c near the
,;a downstream portion where the valley becomes more confined. This section of channel is
relatively stable, but exhibits signs of past channelization and an overly wide channel dimension
in many places. Pool habitat is lacking and will be improved with the installation of in-stream
structures that will help narrow the channel and improve aquatic habitat and stability.
14

i
The work described in this section and shown in the project plan sheets would qualify primarily
as Enhancement Level II under the Apri12003 USACE and NCDWQ Stream Mitigation
Guidelines. Minimum buffer widths on the right streambank will be in excess of 9 meters (30
feet). On the left streambank, buffer widths will be approximately 8 meters (26 feet) from station
10+00 to 11+80. All other areas will have buffers at least 9 meters (30 feet) in width.
~ 8.4 SITE 8
This section of Bald Creek has been channelized and straightened in the past and, as a result,
exhibits signs of instability along the project reach. Enhancement techniques will be used to
stabilize the stream, including the excavation of bankfull benches and the installation of in-stream
structures. In-stream structures, such as J-hooks and cross-vanes, will be used to stabilize channel
pattern and improve bedform diversity and habitat.
The work described in this section and shown in the project plan sheets would qualify as
Enhancement Level I under the April 2003 USACE and NCDWQ Stream Mitigation Guidelines.
Minimum buffer widths on the right streambank will be in excess of 9 meters (30 feet) in all areas
except near station 11+00, where the buffer will be approximately 6 meters (20 feet) in width.
On the left streambank, buffer widths will be approximately 6 to 7 meters (20 to 23 feet) from
station 10+40 to 10+60, and from station 11+50 to 13+07. All other areas will have buffers at
least 9 meters (30 feet) in width.
8.5 SITE 11
The project reach is an unstable, relatively short section of Phipps Creek. The stream was most
likely channelized in the past as a result of agricultural conversion of the surrounding land. The
LL, stream is deeply incised with actively eroding banks. The entire project reach will be restored
through a Rosgen Priority Level II approach, where a bankfull bench is constructed along the left
bank, and a new stream pattern is constructed within the excavated floodplain.
The work described in this section and shown in the project plan sheets would qualify as
Restoration under the Apri12003 USACE and NCDWQ Stream Mitigation Guidelines. A
minimum buffer width of 9 meters (30 feet) will be established along the restored reach.
8.6 SITE 12
This project reach is relatively stable; however, in-stream habitat is limited due to the channelized
nature of the reach and large amounts of fine sediment. that are washed into the creek from an
upstream cattle area. The project reach will be enhanced by the construction of a bankfull bench
along the left bank of the project. Cross-vanes will be installed along the reach to improve
overall aquatic habitat and protect against future down-cutting of the channel. Any trees that
have fallen across the channel will be removed.
The work described in this section and shown in the project plan sheets would qualify as
Enhancement Level I under the Apri12003 USACE and NCDWQ Stream Mitigation Guidelines.
Minimum buffer widths on the right streambank will be approximately 7 to 9 meters (23 to 30
feet) in width. On the left streambank, buffer widths will be approximately 5 to 6 meters (17 to
20 feet) in width along most of the reach.
15

9.0 STREAM PERFORMANCE CRITERIA AND MONITORING PLAN
An As-built will be submitted within 60 days of completion of the project. The As-built will document
changes in the dimension, pattern, profile, vegetation plantings, and structures of the constructed Q~ ~~
channels. ~/~ ~, ~ ~ ~~ 1
~~~/~~~s ~~A~ ~ sr~~l
The following components Level 1 nitoring '11 be performed each year of the 5-year monitoring
period: Reference photos, plans '.., ' ify specific problem areas (missing, stressed, damaged
or dead plantings), estimated causes and proposed/required remedial action); visual inspection of channel
stability. Physical measurements of channel stability/morphology will not be performed. A monitoring
report will be submitted within 60 days after completing the monitoring.
10.0 MITIGATION SUMMARY
NCDOT has made an effort to restore and enhance approximately 1,649 meters (5,410 feet) of streams
adjacent to the US 19 corridor to meet our mitigation requirements. The streams are being purchased as
right-of-way for the roadway project. These sites will have controlled access to ensure they are protected
from local landowner encroachment. Also, placing these streams and riparian buffers into right-of-way
guarantees that no future impacts will occur directly to these channels due to commercial or residential
development along the corridor.
We have protected extensive portions of the stream system from any future development. Based on the
efforts to enhance the water quality adjacent to the roadway, NCDOT proposes the following credit ratios:
Restoration/Relocation 1:1
Enhancement 2:1
Using these ratios would yield the following:
TABLE 5. MITIGATION SUMMARY
A roach Credit Ratio Pro osed Len th Pro osed' Credits
Restoration 1 85 meters 85 meters
Enhancement 2 1,564 meters 782 meters

Total 867 meters
(2,844 feet)
11.0 REFERENCES
Rosgen, D. L. 1996. Applied River Morphology. Wildland Hydrology Books. Pagosa Springs, CO.
Rosgen, D. L. 1998. The Reference Reach-a Blueprint for Natural Channel Design. Draft Presented at
ASCE Conference on River Restoration. Denver, CO, March, 1998. ASCE. Reston, VA.
16

APPENDIX A
REFERENCE REACH STREAM DATA

a
__~
~~~~ ~~
k Refeteince Reach Database
ra,p~
Stream ID _
Stream 1Vame North Fork New River
6ontad ' Mgela .kssup
O'ganizatidn NRCS
Email Angela.G.Jessup~usda.gov
Date:Surveyed

location
River Basin. New
8-digit fiUC 05050001
Location NC Hwy Bs rxar Creston, NC
Reacfi Statfan 0+00 fs at the head of the
DesQiptbn riffle above the first bfg bend on
River t3reeze Estates
State, NC
Latitude ~ (decimal depress)
Longitude ~ (decimal degrees)
county '~' -~
t~hysb. Regbn Mantnfn (coast, Piedmord, mtnsj
Ecoreylon
Public/Private..
Right of Entry ~ fchedc for yes)
l1SC,3 Quad Baldwin Gap
LetLail,Paugh, NCDOT
[phone]
Ipaugh [e-mail]
Hydraulics
BanI~ullDisc~arge 1,OOD.O (cfs)
13~nkfullYelodti/ 5.9 (itjs)
Manning's p ~~
Metfiod of Calculating
Manning's n
Channel Materials
Percent Silt/Clay 2Wo
Pen~iant:Sand 26"/0
Peroeni: Gravel 2096
Peraerrt Cobble 35W0'
PeroeM Boulder 79/0
Peroent Bedrock 10"/0
Di6 0.25 (mm)
X35 35 (gym)
D50 = 75 (mm)
D84 36 (mm)
lJ95 2600 (nom)
Note: 2,049 mm aornesponds to BEDROCK

N°'"" -
~~
~ Reference Reach Database:
rprp
Stream 1D ;
Stream Name North Fork New Rives
LeiLa~i Baugh, NCDDT
(el~)733-11~
Ipaugh~dotstate.nc.us
D1111Cii51011 {Z7t10S Mean' Minimum Maximurr-
Bankiuil Width: Depth Ratio 16.23 13.53 18.4
Entrenchment Ratio 4.63... 226 8.24
Bank Height Ratio 1.00 1.00 1.00
Pool widths Bankfuii width* 0.97 0.97 0.97
Max poo4 depth: Bankfull depth* 240 232 2.47
Mean pool depth: Bankfuildepth* 1.07. 0.84,. 1.30
Pool area: Riftie area* 1.03 0.82 1.25

* Rath denominators are the riFfle mean bankfuU value:
PrGf1~C IW~IOS Mean Minimum Maximum
Pool slope:. Avg 1N5 slope -0.16 -0.31 0.00,
Riffle sbpe: Avg WS sbpe 1.9 1.73 2.0
Gikie sbpe: Avg iNS sbpe -0.56 -0.56 -0.56
Run s bpe: Avg 1NS bpe 1.17 1.17 1.17 `

:3
j
:~
~*
~~
* ,~ LelLaniPaugh,NCDOT
Reference Reach Database [phone]
~~ Ipaugh~~dotstabe:nc.u§
au~~
Stream m _ __ iz
Stn3am Name LASt Cove Creek
Coniact Dan Clhhon
Organization NCSU
Email [e-mail]
DateSBrVeyed 6/8/1998
. ..Location
River Basin Catawba
8-digit HUC 03050101
Location Town of Edgemont, NC, withh
Pisgah Natbnal Forest

Reach
Description

State. NC
Latituae ~ taecimataegrees)
Longitude ~ [decimal degrees]
County Avery
Physb. Regbn Mantah (coast, Piedmont, mtns)
Ecoregfon
Public/Private.
RighhafEntry 0 tched~foryes)
USGS t2uad Qandfatlxr M .
Hydraulics
Banld:ull Discharge ~ {cfs)
Bankfuli Xebdty ~-~ [{y js)
Manning's n
Method of Cakulatim~
Manning's n
Channel Materials
Pen~ft SiltjClay o%
Penxnt Sand 18%
Peroent Gravel 5%
PeraeM Cobble; 48%
Percent Boulder- 18%
Percent Bedrock 11%
D16 1.4 [ten)
D35 ~ ~mm)
D50 • 144 (mm)
D$4 51 mm)
D95 ~ tmm)
Note: 2,049 mm corresponds to BEDROCK

w
~~ `"`~
4
* LeiLahf Paugh, NCDOT
~ Refieirence Reach Database- c919a733-194
~ [e-mail]
'4„a^
Stn~rtr ID
Stream Name ~-cove treek -~
DimenSlOn Ra#ias Mean Minimum Maadmum
Bankfuq Width: Depth Ratio 18.59 18.09 19.09
Entrend~ment Ratio 4A ..3.08 _ 4.96
Bank Height Ratio: ~ ~ -
Pool width: 8ankfull width* 0.96 0.96 0.96
Max pawl depth: Bankfull depth* 230 230. 2.30
Mean pool depth: Bank#uildepth* 1.25. _ 1.25 - 1.25
Pool area:RiffFe areas 1.21 1.21 1.21.

* Rath denominators are the-riffle mean bankfuli value.
P~CfO Rat105 Mean. Minimum Maximum
Pool to pool Spacing; Bkfl vuidth 3.05 3.05 3.05
Meander lengtfi rata 8.67 8.67 6.67
Radius of curvature aTtb 1.00 1.00 1.00
Meanderwidffi ratio 8.03 8.03 8.03

Pt'O'fl~e X10$ Mean Minimum Maximum
Pool slaps: Avg WS slope 0.11 0.11 0.11
Riffle sbpe: Avg WS sbpe 3.25 3.25. 3.25.
Glidesbpe: Avg W5 sbpe. 0.19 0.19 0.19
Run sbpe:. Avg WS sbpe 1.43 1.43 1.43

APPENDIX B
MORPHOLOGICAL CHARACTERISITCS OF
PROPOSED STREAMS

MORPHOLOGICAL MEASUREMENTS TABLE
R-2518B On-Site Mitigation -Site 1 Parameters
F,NGLISH UNITS
Variables Existin Channel Prop osed Oesi n
1. stream type
B3 83
2. drainage area (sq. mi)
3.80 3.60
3. bankfull width (ft) mean: 16.43 mean: 16
ran e: 15.48 - 17.39 ran e: - - -
4. bankfull mean depth mean: 1.2 mean: 1.23
(ft) ran e: 1.16 - 1.23 ran e: - - -
5. widthldepth ra0o mean: 13.6 mean: 13
ran e: 12.6 - 14.9 ran e:
6. bankfull cross- mean: 19.62 mean: 19.7
sectional area (sq. R) ran e: 19.01 - 20.23 ran e:
7. bankfull mean velocity mean: 4.7 mean: 4.7
itlsecl ran e: - -
- ran e: - - -
8. bankfull discharge mean: 93 mean: 93
(cfs ran e: - - - ran e: - - -
9. bankfull max depth (ft) mean: 2.3 mean: 1.8
ran e: 2.2 - 2.39 ran e: - - -
10. width offloodprone mean: 28.93 mean: 30
area (ftl ran a: 25.17 - 32.68 ran e: 25 - 35
11. entrenchment ratio mean: 1.66 mean: 1.6
ran e: 1.45 - 1.67 ran e: 1.4 - 1.9
12. meander length (ft) ` mean: NA mean: NA
ran e: ran e:
13. ratio of meander
length to bankfull mean: NA mean: NA
width ` ran e: - • - ran e: - • -
14. radius of curvature (ft) mean: NA mean: NA
ran e: ran e:
15. rato of radius of
curvature to bankfull mean: NA mean: NA
width ` ran e: - - - ran e: - - -
16. belt width (ft)' mean: NA mean: NA
ran e: - • - ran e: -- • -
17. meander width ratio ` mean: NA mean: NA
ran e: -- - - ran e: - - -
18. sinuosity (stream mean: 1.03 mean: 1.03
len thlvallleV lenpthl ran a: - - - ran e: - • -
19. valley slope (itlR) mean: 0.025 mean: 0.026
ran e: - - - ran e: - - --
20. average slope (ft/R) mean: 0.024 mean: 0.024
ran e: - - - ran e: - - -
21. Pool slope (Rift) mean: 0.001 mean: 0.001
ran e: - • - ran e:
-
• -
22. Ratio of pool slope to mean: 0.04 mean: 0.04
average slope ran e: ran e: - -
23. maximum pool depth mean: 2.5 mean: 3
(R ran e: 2.5 - 2.5 ran e:
-
- -
24. ratio of pool depth to mean: 2.1 mean: 2.4
avers a bankfull depth ran e: 2.1 - 2.1 ran e:
-
- -
25. pool wi th (ft) mean: 22.25 mean: 19
ran e: 22.25 - 22.25 ran e:
-
- -
26. rato of pool width to mean: 1.4 mean: 1.2
bankfull width ran e: 1.4 - 1.4 ran e:
-
- -
27 pool to pool spacing mean: NA mean: NA
(ft)' ran a: ran e: - -
28 ratio of pool to pool mean: NA mean: NA
spacing to bankfull
~ ran e: - - ran e: - -
29 ratio of lowest bank
height to bankfull mean: 1.10 mean: 1.00
height (or max bankfull
depth) ran e: 1.00 - 1.20 ran e: 1.00 - 1.20
MF.TRl(' UNITS
Variables Existing Channel Proposed Desi n
1. stream type
83 63
2. drainage area (sq km)
9.84 9.84
3. bankfull width (m) mean: 5.01 mean: 4.88
ran e: 4.72 - 6.30
4. bankfull mean depth mean: 0.37 mean: 0.37
(ml ran e: 0.35 - 0.37 -
5. widthldepth ratio mean: 13.80 mean: 13
ran e: 12.60 - 1 4.90 ran e:
6. bankfull cross- mean: 1.82 mean: 1.83
sectional area(aq. m) ran e: 1.77 - 1.88 ran e:
7. bankfull mean velocity mean: 1.43 mean: 1.43
(misec) ~ ran e: - - ran e:
-
-
8. bankfull discharge (cu mean: 2.63 mean: 2.63
misec ran e: ran e: -- -
9. bankfull max depth (m) mean: 0.70 mean: 0.55
ran e: 0.67 - 0.73 ran e:
-
10. widthof.floodprone mean: 8.82 mean: 9.14
area Iml ran e: 7.67 - 9.98 ran e: 7.62 - 10.67
11. entrenchment ratio mean: 1.66 mean: 1.6
ran e: 1.45 1.87 ran e: 1.4 - 1.9
12. meander length (m) • mean: NA mean: NA
ran e: ran e:
13. ratio of meander
length to bankfull mean: NA mean: NA
width ` ran e: ran e:
14. radius of curvature (m) mean: NA mean: NA
ran e: ran e:
15. ratio of radius of
curvature to bankfull mean: NA mean: NA
width ` ran e: ran e:
16. belt width (m) ` mean:. NA mean: NA
ran e: ran e:
17. meander width ratio ` mean: NA mean: NA
ran e: ran e:
18. sinuosity (stream mean: 1.03 mean: 1.03
lenpthlvaille len th ran e: - ran e:
-
19. valley slope (mlm) mean: 0.025 mean: 0.025
ran e• rsn e•
-
20. average slope (mlm) mean: 0.024 mean: 0.024
ran e: ran e:
-
21. Pool slope (m/m) mean: 0.001 mean: 0.001
ran e: ran e:
-
22. Ratio of pool slope to mean: 0.04 mean: 0.04
average slope ran e: ran e: - - -
23, maximum pool depth mean: 0.76 mean: 0.91
m ran e: 0.76 - 0.76 ran a: - -
24. ratio of pool depth to mean: 2.1 mean: 2.4
avers a bankfull de th ran e: 2.1 - 2.1 ran e:
-
25. pool width (m) mean: 6.78 mean: 5.79
ran e: 6.78 - 6.78 ran e:
26. ratio of pool width to mean: 1.4 mean: 1.2
bankfull width ran e: 1.4 - 1.4 ran e:
-
-
27 pool to pool spacing mean: NA mean: NA
m * ran n• ran e:
28 ratio of pool to pool mean: NA mean: NA
spacing to bankfull
wi ran e: - - ran e: - -
29 ratio of lowest bank
height to bankfull mean: 1.10 mean: 1.00
height (or max bankfull
depth) ran e: 1.00 - 1.20 ran e: 1.00 - 1.20
Notes
` Parameter was not estimated -stream is a step-pool system.
Reference reach information not evaluated • design includes enhancement only.
,Ry
`',~
:i3

MORPHOLOGICAL MEASUREMENTS TABLE
R-2518B On-Site Mitigation -Site 3 Parameters
F.NGIJSH I/NIT.S
Variables Ezistin Channel Proposed Desi n
1. stream type
63 63
2. drainage area (sq. mi)
4.20 4.20
3. bankfull width (ft) mean: 21.26 mean: 21
ran e: 20.98 - 21.55 ran e:
4. bankfull mean depth mean: 1.62 mean: 1.62
(ftl ran e: 1.32 - 1.93 ran e:
5. widthldepth ratio mean: 13.5 mean: 13
ran e: 11.2 - 15.9 ran e:
6. bankfull cross- mean: 34.6 mean: 34
sectional area (sq. R) ran e: 27.67 - 41.54 ran e:
7. bankfull mean velocity mean: 6.5 mean: 6.5
Itt/secl ran e: ran e:
'
6. bankfull discharge mean: 226 mean: 226
(cfs) ran e: ran e:
9. bankfull max depth (ft) mean: 2.71 mean: 2.2
ran e: 2.53 - 2.86 ran e:
10. width otfloodprone mean: 50.2 mean: 50
area IR) ran e: 29.47 - 70.94 ran e: 30 - 70
11. entrenchment ratio mean: 1.45 mean: 2.35
ran e: 1.4 - 1.5 ran e: 1.4 - 3.3
12. meander length (ft) * mean: NA mean: NA
ran e: ran e:
13. ratio of meander
length to bankfull mean: NA mean: NA
width * ran e: ran e:
14, radius of curvature (ft) mean: NA mean: NA
ran e: ran e:
15. ratio of radius of
curvature to bankfull mean: NA mean: NA
width * ran a: ran a:
^
16. belt width (R) * mean: NA mean: NA
ran e: ran e•
Y
17. meander width ratio * mean: NA mean: NA
ran e: ran e:
16. sinuosity (stream mean: 1.04 mean: 1.04
lengthlvalllev length) ran e: ran e:
J
19. valley slope (ft/ft) mean: 0.032 mean: 0.032
ran e: ran e:
20. average slope (R/R) mean: 0.031 mean: 0.031
ran e: ran e:
!
21. Pool slope (ft/R) mean: 0.001 mean: 0.001
ran e: ran e:
_
22. Ratio of pool slope to mean: 0.03 mean: 0.03
average slope ran e: ran e:
23. maximum pool depth mean: - mean: 3.5
IRI ran e: ran e•
Y
24, ratio of pool depth to mean: - mean: 2.2
avers a bankfull depth ran e: ran e:
25. pool width (ft) mean: - mean: 26
ran e: ran e:
~~
26. ratio of pool width to mean: - mean: 1.2
bankfull width ran e:
~ ran e:
27 pool to pool spacing mean: NA mean: NA
(ftl * ran e: ran e:
28 ratio of pool to pool mean: NA mean: NA
spacing to bankfull
idth * ran e: ran e:
29 ratio of lowest bank
height to bankfull mean: 1.25 mean: 1.00
height (or max bankfull
depth) ran e: 1.00 - 1.50 ran e: 1.00 - 1.20
Notes
* Parameter was not estimated -stream is a step-pool system.
Reference reach information not evaluated -design includes enhancement only.
METRIC UNITS
Variables Existing Channel Proposed Design
1. stream type
83 83
2. drainage area (sq km)
10.88 10.88
3. bankfull width (m) mean: 6.48 mean: 6.40
ran e: 6.39 - 6.57
4. bankfull mean depth mean: 0.49 mean: 0.49
Iml ran e: 0.40 - 0.59
5. widthldepfh ratio mean: 13.50 mean: 13
ran e: 11.20 - 15.90 ran e:
6. bankfull cross- mean: 3.21 mean: 3.16
sectional area (sq. m) ran a; 2.57 - 3.86 ran e:
7. bankfull mean velocity mean: 1.98 mean: 1.98
Imlaeel ran e: ran e:
8. bankfull discharge (cu mean: 6.40 mean: 6.40
misecl ran e: ran e:
W
9. bankfull max depth (m) mean: 0.63 mean: 0.67
ran e: 0.77 - 0.88 ran e:
10. width otfloodprone mean: 15.30 mean: 15.24
area /m ran e: 8.98 - 21.62 ran e: 9.14 - 21.34
11. entrenchment ratio mean: 1.45 mean: 2.35
ran e: 1.40 - 1.50 ran e: 1.4 - 3.3
12. meander length (m) * mean: NA mean: NA
ran a: ran e:
13. ratio of meander
length to bankfull mean: NA mean: NA
width * ran e: ran e:
14. radius of curvature (m) mean: NA mean: NA
ran a: ran e:
15. ratio of radius of
curvature to bankfull mean: NA mean: NA
width * ran e: ran e:
16. belt width(m)* mean: NA mean: NA
ran e:
'
' ran e:
17. meander width ratio * mean: NA mean: NA
ran e: ran e:
_
18. sinuosity (stream mean: 1.04 mean: 1.04
ten thlvalllev length ran e: ran e:
19. valley slope (mlm) mean: 0.032 mean: 0.032
ran e:
_ ran e:
Y
20. average slope (mlm) mean: 0.031 mean: 0.031
ran e:
_ ran e:
vY
21. Pool slope (mlm) mean: 0.001 mean: 0.001
rsn e:
_ ran e:
W
22. Ratio of pool slope to mean: 0.03 mean: 0.03
average slope ran e: ran e:
23. maximum pool depth mean: - mean: 1.07
(m) ran e: ran e:
~
24. ratio of pool depth to mean: - mean: 2.2
average bankfull depth ran e: ran e:
25. pool width (m) mean: - mean: 7.92
ran e: ran e:
'
26. ratio of pool width to mean: - mean: 1.2
bankfull width ran e:
~ ran e:
....
27 pool to pool spacing mean: NA mean: NA
m * ran e:
~ ran e•
28 ratio of pool to pool

spacing to bankfull mean: NA mean: NA
width * ran e: ran e:
29 ratio of lowest bank
height to bankfull mean: 1.25 mean: 1.00
height (or max bankfull
depth) ran e: 1.00 - 1.50 ran e: 1.00 - 1.20
:,-y
i
7

MORPHOLOGICAL MEASUREMENTS TABLE
R-2518B On-Site Mitigation -Site 4 Parameters
F.NGLLSH UNITS
Variables Existin Channel Proposed Design
1. stream type
C4 C4
2. drainage area (sq. mi)
8.40 8.40
3. bankfull width (R) mean: 25.56 mean: 25.2
ran e: 22.71 - 29.88 ran e:
4. bankfull mean depth mean: 1.67 mean: 2
(ftl ran e: 1.59 - 1.77 ran e:
5. widthldepth ratio mean: 15.24 mean: 14
ran e: 14.28 - 16.64 ran e:
6. bankfull cross- mean: 43.03 mean: 50
sectional area (sq. R) ran e: 36.1 - 52.99 ran e:
7. bankfull mean velocity mean: 4.6 mean: 4.6
(ft/secl ran e:
-
ran e:
8. bankfull discharge mean: 241 241
mean:
(efs
-
ran e: ran e:
9. bankfull max depth (R) 3
mean: mean: 2.6
ran e: 2.97 - 3.04 ran e:
10. width offloodprone mean: > 50.0 mean: > 50.0
area (ftl ran e: ran e:
11. entrenchment ratio mean: > 3.0 mean: > 3.0
ran e: ran e:
~
12. meander length (ft) ` mean: NA NA
mean:
ran e: ran e:
13. ratio of meander
length to bankfull mean: NA mean: NA
width ` ran e: ran e:
14. radius of curvature (ft) mean: NA mean: NA
ran e: ran e:
15. ratio of radius of
curvature to bankfull mean: NA mean: NA
width ` ran e: ran e:
16. belt width (ft) ` mean: NA mean: NA
ran e:
- ran e:
17. meander width ratio • mean: NA mean: NA
ran e: ran e:
18. sinuosity (stream mean: 1.11 mean: 1.11
lengthlvallley ten th ran e: ran e:
19. valley slope (tt/R) mean: 0.013 mean: 0.013
ran a: ran e:
-
20. average slope (RJR) mean: 0.012 0.012
mean:
ran e: ran e:
21. Pool slope(R/R) mean: 0.001 mean: 0.001
ran e:
-
ran e•
22. Ratio of pool slope to mean: 0.08 mean:
0.08
average slope ran e: ran e:
23. maximum pool depth mean: - mean: 4.5
IRI ran e: ran e:
24. ratio of pool depth to mean: - mean: 2.3
average bankfull de th ran e:
-
ran e:
25. pool width (R) mean: - 32
mean:
ran e: ran e:
26. ratio of pool width to mean: - mean: 1.3
bankfull width ran e:
-
ran e:
27 pool to pool spacing mean: NA NA
mean:
RI ` ran e: ran e:
28 ratio of pool to pool NA mean: NA
spacing to bankfull mean:
wi ran e: ran e•
29 ratio of lowest bank
height to bankfull mean: 1.20 mean: 1.00
height (or max bankfull
depth) ran e: 1.00 - 1.30 ran e: 1.00 - 1.30
MF,TRIC UNIT.C
Variables Ezistin Channel Proposed Oesign
1. stream type
C4 C4
2. drainage area (sq km)
21.76 21.76
3. bankfull width (m) mean: 7.80 mean: 7.68
ran e: 6.92 - 9.11
4. bankfull mean depth mean: 0.51 mean: 0.61
(ml ran e: 0.48 - 0.54
-
5. widthldepth ratio mean: 15.24 14
mean:
ran e: 14.28 - 16.84 ran e:
`
6. bankfull cross- mean: 4.00 4.65
mean:
sectional area (sq. m) ran e: 3.35 - 4.92 ran e:
7. bankfull mean velocity mean: 1.40 mean: 1.40
(misec) ran e: ran e:
B. bankfull discharge (cu mean: 6.82 mean: 6.82
misec ran e:
-
ran e:
9. bankfull max depth (m) mean: 0.91 0.79
mean:
ran e: 0.91 - 0.93 ran e:
10. width offloodprone mean: > 15.2 mean: > 15.2
area (m) ran e: - ran e:
11. entrenchment ratio mean: > 3.0 mean: > 3.0
ran e:
W
ran e:
12. meander length (m) " mean: NA mean:
NA
ran e: ran e:
13. ratio of meander
length to bankfull mean: NA mean: NA
width ` ran e: ran e:
14. radius of curvature (m) mean: NA mean: NA
ran e: ran e:
15. ratio of radius of
curvature to bankfull mean: NA mean: NA
width ` ran e: ran e:
16. belt width (m) ` mean: NA mean: NA
ran e:
-
-
ran e: .
17. meander width ratio ` mean: NA mean:
NA
ran e: ran e•
-
18. sinuosity (stream mean: 1.11 1.11
mean:
ten thlvalllev ten th) ran e: ran e:
19. valley slope (mim) mean: 0.013 mean: 0.013
ran e: ran e:
20. average slope(mlm) mean: 0.012 mean: 0.012
ran e: ran e:
21. Pool slope (mlm) mean: 0.001 mean: 0.001

_
ran e: ran e•
-
22. Ratio of pool slope to mean: 0.06 mean:
0.08
average slope ran e: ran e:
23. maximum pool depth mean: - mean: 1.37
(ml ran e: ran e:
24. ratio of pool depth to mean: - mean: 2.3
avers a bankfull depth ran e:
~
ran e:
25. pool width (m) mean: - 9.75
mean:
ran e:
~
ran e:
26. ratio of pool width to mean: - mean:
1.3
bankfull width ran e:
- ran e:
27 pool to pool spacing mean: NA mean: NA
(m ` ran e:
-
-
ran e:
28 ratio of pool to pool m
an: NA NA
spacing to bankfull e mean:
w ran e: ran e:
29 ratio of lowest bank
height to bankfull mean: 1.20 mean: 1.00
height (or max bankfull
depth) ran e: 1.00 - 1.30 ran e: 1.00 - 1.30
Notes
` Parameter was not estimated- stream is a step-pool system.
Reference reach information not evaluated • design includes enhancement only. -

MORPHOLOGICAL MEASUREMENTS TABLE
R-2518B On-Site Mitigation -Site 8 Parameters
FNrl.1.SA ~INTT.S METRIC UNITS
Variables Existing Channel Prop osed Design
1. stream type
E4 E41C4
2. drainage area (sq. mi)
17.10 17.10
3. bankfull width (R) mean: 25.12 mean: 30
ran e: 16.25 - 34.52 ran e:
4. bankfull mean depth mean: 2.95 mean: 2.5
IRl ran e: 2.23 - 3.51 ran e:
5. widthldepth ratio mean: 9.3 mean: 12
ran e: 4.6 - 15.4 ran e:
6. bankfull cross- mean; 70.13 mean: 75
sectional area (sq. R) ran e: 57 - 77.14 ran e:
7. bankfull mean velocity mean: 4 mean: 4
fft/secl ran e: ran e:
8. bankfull discharge mean: 279 mean: 279
Icfsl ran e: ran e:
u
9. bankfull max depth (R) mean: 4.22 mean: 3.6
ran e: 4.05 - 4.42 ran e:
10. width of floodprone mean: > 80.0 mean: > 60.0
area IRI ran e: ran e:
11. entrenchment ratio mean: > 3.2 mean: > 3.2
ran e: ran e:
W
12. meander length (ft) ` mean: NA mean: NA
ran e: ran e:
13. ratio of meander
length to bankfull mean: NA mean: NA
width ` ran e: ran e:
14. radius of curvature (ft) mean: NA mean: NA
ran e: ran e:
15. ratio of radius of
curvature to bankfull mean: NA mean: NA
width • ran e: ran e:
16. belt width (R) ` mean: NA mean: NA
ran a:
- ran e:
~
17. meander width ratio ` mean: NA mean: NA
ran e: ran e:
`
16. sinuosity (stream mean: 1.03 mean: 1.03
lengthlvalllev lenathl ran e: ran e:
19. valley slope (ft/R) mean: 0.006 mean: 0.006
ran e: fan e:
20. average slope (R/R) mean: 0.006 mean: D 006
ran e: ran e:
21. Pool slope (ft/ft) mean: 0.0001 mean: 0.0001
ran e: ran e:
22. Ratio of pool slope to mean: 0.02 mean: 0.02
average slope ran e: ran e:
23. maximum pool depth mean: - mean: 5.5
Iftl ran e: ran e:
~
24. ratio of pool depth to mean: - mean: 2.2
average bankfull depth ran e: ran e:
W.
25. pool width (ft) mean: - mean: 40
ran e: ran e:
u
26. ratio of pool width to mean: - mean: 1.3
bankfull width ran e: ran e:
27 pool to pool spacing mean: NA mean: ~ 97.5
fRl` ran e:
Y ran e: 75 120
28 ratio of pool to pool mean: NA mean: 3.25
spacing to bankfull
width ` ran e: ran e: 2.5 - 4
29 ratio of lowest bank
height to bankfull mean: 1.00 mean: 1.00
height (or maz bankfull
depth) ran e: 1.00 1.00 ran e: 1.00 - 1.20
Variables Exis ting Channel Prop osed Design
1. stream type
E4 E41C4
2. drainage area (sq km)
44.29 44.29
3. bankfull width (m) mean: 7.66 mean: 9.14
ran e: 4.95 - 10.52 ran e:
4. bankfull mean depth mean: 0.80 mean: 0.76
Iml ran e: 0.68 - 1.07 ran e:
5. width/depth raflo mean: 9.30 mean: 12.00
ran e: 4.60 - 15.40 ran e:
6. bankfull cross- mean: 5.52 mean: 6.97
sectional area (sq. m) ran e: 5.30 - 7.17 ran e:
7. bankfull mean velocity mean: 1.22 mean: 1.22
Imisecl ran e: ran e:
8. bankfull discharge (cu mean: 7.90 mean: 7.90
misecl ran e: ran e:
9. bankfull maz depth (m) mean: 1.29 mean: 1.10
ran e: 1.23 - 1.35 ran e:
10. width of floodprone mean: > 24.4 mean: > 24.4
area Iml ran e: ran e:
11. entrenchment ratio mean: > 3.2 mean: > 3.2
ran e: ran e:
12. meander length (m)` mean: NA mean: NA
ran e: ran e:
13. ratio of meander
length to bankfull mean: NA mean: NA
width ` ran e: ran e:
14. radius of curvature (m) mean: NA mean: NA
ran e: ran e;
15. ratio of radius of
curvature to bankfull mean: NA mean: NA
width ` ran e: ran e:
16. belt width (m) ` mean: NA mean: NA
ran e:
~ ran e:
17. meander width ratio ` mean: NA mean: NA
ran e: ran e:
v
18. sinuosity (stream mean: 1.03 mean: 1.03
lengthlvalllev lenathl ran e: ran e:
_
19. valley slope (mlm) mean: 0.006 mean: 0.006
ran e:
' ran e:
20. average slope (mlm) mean: 0.006 mean: 0 006
ran e: ran e:
Y
21. Pool slope (mlm) mean: 0.0001 mean: 0.0001
ran e: ran e:
22. Ratio of pool elope to mean: 0.02 mean: 0.02
average slope ran e: ran e:
23. maximum pool depth mean: - mean: 1.68
Iml ran e: ran e:
_
24. ratio of pool depth to mean: - mean: 2.2
average bankfull depth ran e: ran e:
25. pool width (m) mean: - mean: 12.19
ran e: ran e:
....
26. ratio of pool width to mean: - mean: 1.3
bankfull width ran e: ran e:
27 pool to pool spacing mean: NA mean: 29.72
(ml` ran e: ran e: 22.86 - 36.58
28 ratio of pool to pool mean: NA mean: 3.25
spacing to bankfull
wi th ` ran e: ran e: 2.5 - 4
29 ratio of lowest bank
height to bankfull mean: 1.00 mean: 1.10
height (or max bankfull
depth) ran e: 1.00 - 1.00 ran e: 1.00 - 1.20
Notes Notes
` Parameter was not estimated for existing condition -stream has been channelized. `Parameter was not estimated for existing condition -stream has been channelized.

MORPHOLOGICAL MEASUREMENTS TABLE
R-2518B On-Site Mitigation -Site 11 Parameters
FNrr.~crr r~NrT.s METRIC UNITS
Variables Existing Channel Proposed Design
1, stream type
E4bIG4 64
2. drainage area (sq. mi)
1.40 1.40
3. bankfull width (ft) mean: 8.97 mean: 14.5
ran e: ran e:
4. bankfull mean depth mean: 1.64 mean: 1
(ftl ran e: ran e:
5. widthldepth ratio mean: 5.47 mean: 14
ran e: ran e:
6. bankfull cross- mean: 14.7 mean: 15
sectional area (sq
R)
. ran e: ran e:
7. bankfull mean velocity mean: 5.1 mean: 5.1
(ftlsec
_
ran e:
u ran e:
8. bankfull discharge 75
mean: mean: 75
Icfsl ran e: ran e:
9. bankfull max depth (R) mean: 2.2 mean: 1.3

_
ran e: ran e:
10. width of Doodprone mean: 21.11 mean: 43
area (ftl ran e:
' ran e:
~
11. entrenchment ratio mean: 2.4 3
mean:
ran e: ran e:
u
12. meander length (ft) * mean: NA NA
mean:
ran e: ran e:
13. ratio of meander
length to bankfull mean: NA mean: NA
width * ran e: ran e:
14. radius of curvature (ft) mean: NA mean: NA
ran e: ran e:
15. ratio of radius of
curvature to bankfull mean: NA mean: NA
width * ran e: ran e:
16. belt width (R) * mean: NA mean: NA
ran e:
~ ran e:
17. meander width ratio * mean: NA mean: NA

_
ran e: ran e:
18. sinuosity (stream mean: 1.01 mean: 1.01
lengthlvallley length) ran e:
_
ran e:
19. valley slope (R/R) mean: 0.023 0.023
mean:
ran e: ran e:
YY
20. average slope (itlft) mean: 0.023 0.023
mean:
ran e: ran e:
21. Pool slope (ftHt) mean: 0.001 mean: 0.001
ran e: ran e:
22. Ratio of pool slope to mean: 0.04 mean: 0.04
average slope ran e: ran e:
23. maximum pool depth mean: - mean: 2.3
ftl ran e:
__
ran e:
24. ratio of pool depth to mean: - 2.3
mean:
average bankfull depth ran e:
_
ran e:
25. pool width (ft) mean: - 1 B.8
mean:
ran e:
~
ran e:
26. ratio of pool width to mean: - 1.3
mean:
bankfull width ran e: ran e:
27 pool to pool spacing mean: NA mean: NA
ft * ran e: ran e:
26 ratio of pool to pool : NA
m
a mean: NA
spacing to bankfull n
e
w t * ran e: ran e:
29 ratio of lowest bank
height to bankfull mean: 2.00 mean: 1.00
height (or max bankfull
depth) ran e: 1.00 - 3.00 ran e: 1.00 - 1.20
Variables Existin Channel Proposed Design
1. stream type
E461G4 B4
2. drainage area (sq km)
3.63 3.63
3. bankfull width (m) mean: 2.73 mean: 4.42
ran e: ran e:
4. bankfull mean depth mean: 0.50 mean: 0.30
(ml ran e: ran e•
5. widthldepth ratio mean: 5.47 mean: 14
ran e: ran e:
6. bankfull cross- mean: 1.37 mean: 1.39
sectional area (sq. m)
ran a: ran e:
7. bankfull mean velocity mean: 1.55 mean: 1.55
(misee ran e: ran e:
8. bankfull discharge (cu mean: 2.12 mean: 2.12
miseel ran e:
~
ran e:
9. bankfull max depth (m) mean: 0.67 mean:
0.40
ran e: ran e:
10. width of Doodprone mean: 6.43 mean: 13.11
area (m) ran e:
H
W
ran e:
11. entrenchment ratio mean: 2.4 3
mean:
ran e:
Y ran e:
v
12, meander length (m) * mean: NA NA
mean:
ran e: ran a•
13. ratio of meander
length to bankfull mean: NA mean: NA
width * ran e: ran e:
14. radius of curvature (m) mean: NA mean: NA
ran e: ran e:
15. ratio of radius of
curvature to bankfull mean: NA mean: NA
width * ran e: ran e:
16. belt width (m) * mean: NA mean: NA
ran e:
' ran e•
17. meander width ratio* mean: NA mean: NA
ran e: ran e:
18. sinuosity (stream mean: 1.01 mean: 1.01
lengthlvalllev length) ran e: ran e:
19. valley slope (mlm) mean: 0.023 mean: 0.023
ran e: ran e•
20. average slope (mlm) mean: 0.023 mean: 0.023
ran e: ran e•
A
21. Pool slope (mlm) mean: 0.001 0.001
mean:
ran e:
W
ran e:
22. Ratio of pool slope to mean: 0.04 D.04
mean:
average slope ran e: ran e:
23. maximum pool depth mean: - mean: 0.70
(m) ran e: ran e:
24. ratio of pool depth to mean: - mean: 2.3
average bankfull depth ran e:
~.
ran e:
25. pool width (m) mean: - 5.73
mean:
ran e:
~
ran e•
26. ratio of pool width to mean: - mean:
1.3
bankfull width ran a: ran e:
`
27 pool to pool spacing mean: NA mean:
NA
(ml * ran e:
~
~ ran e:
T
28 ratio of pool to pool NA NA
spacing to bankfull mean: mean:
width * ran a: ran e:
29 ratio of lowest bank
height to bankfull mean: 2.00 mean: 1.00
height (or max bankfull
depth) ran e: 1.00 - 3.00 ran e: 1.00 - 1.20
Notes
* Parameter was not estimated -stream is a step-pool system.
T7

MORPHOLOGICAL MEASUREMENTS TABLE
R-2518B On-Site Mitigation -Site 12 Parameters
RN(;l.T.CH lIN1T.C
Variables Existing Channel Proposed Design
1. stream type
B41G4 64
2. drainage area (sq. mi)
0.70 0.70
3. bankfull width (ft) mean: 8.26 mean: 11.8
ran e: 5.87 - 10.65 ran e:
4. bankfull mean depth mean: 1.36 mean: 0.8
Iftl ran e: 1.36 - 1.37 ran e: -- -
5. widthldepth ratio mean: 6.1 mean: 14
ran e: 4.3 - 7.8 ran e:
6. bankfull cross- mean: 11.24 mean: 10
sectional area (sq. R) ran e: 6.03 - 14.46 ran e:
7. bankfull mean velocity mean: 4.3 mean: d.3
Ift/sec)
-
ran e: ran e: - -
8. bankfull discharge 48
mean: mean: 48
(cisl ran e: ran e: --
9. bankfull max depth (R) mean: 1.85 mean: 1.1
ran e: 1.76 - 1.95 ran e:
10. width of Roodprone mean: 13.89 mean: 35
area (ftl ran e: 12.57 - 15.21
-
ran e: -
11. entrenchment ratio mean: 1.75 3
mean:
ran e: 1.4 - 2.1 ran e:
12. meander length (ft)* mean: NA mean: NA
ran e: ran e:
13. ratio of meander
length to bankfull mean: NA mean: NA
width' ran e: ran e:
14. radlus of curvature (R) mean: NA mean: NA
ran e: ~" ran e:
15. ratio of radius of
curvature to bankfull mean: NA mean: NA
width * ran e:
-
-
ran e:
16. belt width (ft)' mean: NA NA
mean:

-
ran e: ran e:
-
17. meander width ratio' mean: NA NA
mean:
ran e:
- ran e:
18. sinuosity (stream mean: 1.01 mean: 1.01
len thlvalllav length) ran e: ran e: --
19. valley slope (ft/R) mean: 0.02 mean: 0.02

-
ran e: - - - ran e: - - -
20. average slope (ft/R) mean: 0.02 mean: 0.02
ran e:
- ran e:
21. Pool slope (CUR) mean: 0.001 mean: 0.001
ran e: - - - ran e: - - - -
22. Ratio of pool slope to mean: 0.05 mean: 0.05
average slope ran e: ran e:
23. maximum pool depth mean: - mean: 2
(ftl ran e:
-
ran e•
24. ratio of pool depth to mean: - 2.5
mean:
avers a bankfull depth ran a:
-
ran e:
25. pool width (ft) mean: - 15.3
mean:
ran e: ran e:
26. ratio of pool width to mean: - mean: 1.3
bankfull width ran e: ran e:
27 pool to pool spacing mean: NA mean: NA
Iftl * ran e: ran e:
28 ratio of pool to pool mean: NA mean: NA
spacing to bankfull
h * ran e: ran e: -
29 ratio of lowest bank
height to bankfull mean: 2.45 mean: 1.00
height (or max bankfull
depth) ran e: 1.00 - 3.90 ran e: 1.00 - 1.20
MF.TRTC.' IINTT.S
Variables Existin Channel Proposed Desi n
1. stream type
64lG4 84
2. drainage area (sq km)
1.81 1.61
3. bankfull width (m) mean: 2.52 mean: 3.60
ran e: 1.79 - 3.25
4. bankfull mean depth mean: 0.41 mean: 0.24
(ml ran e: 0.41 - 0.42 -
5. widthldepth ratio mean: 6.10 mean: 14
ran e: 4.30 7.80 ran e:
6. bankfull cross- mean: 1.04 mean: 0.93
sectional area (sq. m) ran e: 0.75 - 1.34 ran e:
7. bankfull mean velocity mean: 1.31 mean: 1.31
(misecl ran e: ran e:
B. bankfull discharge (eu mean: 1.36 mean: 1.36
misecl ran e: ran e:
-
9. bankfull max depth (m) mean: 0.56 0.34
mean:
ran e: 0,54 - 0.59 ran e:
10. width of Ooodprone mean: 4.23 mean: 10.67
area (m ran e: 3.83 - 4.64
-
ran e: -
11. entrenchment ratio mean: 1.75 3
mean:
ran e: 1.40 - 2.10 ran e:
12. meander length (m) * mean: NA mean: NA
ran e: ran e:
13. ratio of meander
length to bankfull mean: NA mean: NA
width * ran e: ran e:
14, radius of curvature (m) mean: NA mean: NA
ran e: ran e:
15. ratio of radius of
curvature to bankfull mean: NA mean: NA
width * ran e:
- ran e:
16. belt width (m) * mean: NA mean: NA
ran e:
-
ran e:
17. meander width ratio * mean: NA NA
mean:
ran e:
- ran e:
-
18. sinuosity (stream 1.01
mean: 1.01
mean:
len thlvallle length) ran e:
-
ran e:
19. valley slope (mlm) mean: 0.02 0.02
mean:
ran e:
-
ran e:
20. average slope (mlm) mean: 0.02 0.02
mean:
ran e: ran e:
-
21. Pool slope (mlm) mean: 0.001 0.001
mean:
ran a: ran e:
22. Ratio of pool slope to mean: 0.05 mean: 0.05
average slope ran e: ran e:
-
23. maximum pool depth mean: - 0.61
mean:
(ml ran e: ran e:
24. ratio of pool depth to mean: - mean: 2.5
avers. a bankfull depth ran e:
-
ran e: - -
25. pool width (m) mean: - 4.66
mean:
ran e: ran e:
y
26. ratio of pool width to mean: - 1.3
mean:
bankfull width ran e:
-
-
ran e:
27 pool to pool spacing mean: NA NA
mean:
Im * ran e: ran e: -
28 ratio of pool to pool mean: NA mean: NA
spacing to bankfull
wi ran e: ran e: -
29 ratio of lowest bank
height to bankfull mean: 2.45 mean: 1.00
height (or max bankfull
depth) ran e: 1.00 - 3.90 ran e: 1.00 - 1.20
Notes
* -Parameter was not estimated -stream is a step-pool system.
Reference reach information not evaluated -design includes enhancement only.

_ ~ r
APPENDIX C
SEDIMENT TRANSPORT CALCULATIONS

Shear Stress Anal sis Data Site 11
Feature Riffle
Bankfull Cross Sectional Area, Abkf (sq ft) 14.7
Bankfull Width, Wbkf (ft) 15.0
Bankfull Mean Depth, Dbkf (ft) 1.0
Width/Depth Ratio, W/D (ft/ft) 15.3
Wetted Perimeter, WP=W+2D (ft) 17.0
Hydraulic Radius, R=Abkf/WP (ft) 0.9
Average Channel Slope, Se (ft/ft) 0.02300
Boundary Shear Stress, z (lb/sq ft) 1.41
Median Diameter of Pavement, Dso (mm) 36.2
Median Diameter of Sub-pavement, D^so
(mm) 13.7
Critical Dimensionless Shear Stress, t~; 0.0357
Largest Particle from Sub-Pavement, D;
(mm) 55
Largest Particle from Sub-Pavement, D; (ft) 0.18
Required Mean Bankfull Depth, Dr (ft) 0.5
Re wired Mean Bankfull Slo e, Sr ft/ft 0.0109
~~
~±

APPENDIX D
RIPARIAN PLANTING PLAN AND SPECIFICATIONS

The planting of additional and/or more desirable vegetation is an important aspect of the restoration plan.
Vegetation helps stabilize stream banks, creates habitat and food sources for wildlife, lowers water
temperature by stream shading, improves water quality by filtering overland flows, and improves the
aesthetics of the site.
The reforestation component of this project will include live dormant staking of the stream banks, riparian
buffer planting, invasive species removal, and seeding for erosion control. The stream banks and the
riparian areas will be planted with both woody and herbaceous vegetation to establish a diverse
streamside buffer. Planting the stream banks is a desirable means of erosion control because of the
dynamic, adaptive, and self-repairing qualities of vegetation. Vegetative root systems stabilize channel
banks by holding soil together, increasing porosity and infiltration, and reducing soil saturation through
transpiration. During high flows, plants lie flat, and stems and leaves shield and protect the soil surface
from erosion.
Live Staking
The installation of live stakes on the stream banks will serve to protect the banks from erosion while
providing habitat, shade, and improved aesthetics. Live staking areas are indicated on the plan sheets.
Live stakes will be installed in areas where banks are sloped or benched as part of the mitigation work. In
some locations, live stakes may be installed along existing banks to improve streamside vegetation and
stability. Live staking must take place during the dormant season (November to March). Live stakes may
be gathered locally or purchased from a reputable, commercial supplier. Stakes should be at least'/z
inches and no more than 2 inches in diameter, between 2 and 3 feet in length, and living, as evidenced by
the presence of young buds and green bark. Stakes are cut at an angle on the bottom end and driven into
the ground with a rubber mallet. For hard ground or rocky sub-soil, holes for live stakes may be created
in the soil by the use of a metal bar, provided that good soil contact is created between the walls of the
hole and the inserted live stake.
Riparian Buffer Re-Vegetation
Riparian buffers are naturally occurring ecosystems adjacent to rivers and streams and are associated with
a number of benefits. Buffers are important in nutrient and pollutant removal in overland flow and may
provide for additional subsurface water quality improvement in the shallow groundwater flow. Buffers
also provide habitat and travel corridors for wildlife populations and are an important recreational
resource. It is also important to note that riparian buffer areas help to moderate the quantity and timing of
runoff from the upland landscape and contribute to the groundwater recharge process.
The planting plans for the site (see plan sheets) indicate that bare-root trees will be planted within
designated areas of the right-of-way easement. Efforts have been made to ensure at least 9 meters (30
feet) of buffer adjacent to project stream reaches; however, there are some areas where a 9-meter (30-
foot) buffer is not possible due to the proximity of the right-of-way boundary. In many areas, the
protected buffer area will exceed 9 meters (30 feet) in width. In general, bare-root vegetation will be
planted to ensure survivability of at least 260 stems per acre five years after the completion of the work.
Planting of bare-root trees will be conducted during the dormant season, with all trees installed prior to
the beginning of the growing season.
Selected species for hardwood re-vegetation are presented in Table D.1. Temporary and permanent seed
mixtures will be applied to all disturbed areas of the project site, including constructed stream banks,
access roads, side slopes, spoil piles, etc.

Table D.1
Proposed Bare-root and Live Stake Species
Type II Streambank Reforestation -Bare Root Plantings
a
a
American S camore Platanus occidentalis 20%
Green Ash Fraxinus enns Ivanica 10%
River Birch Betula ni ra 20%
Southern Red Oak Quercus falcata var. falcata 20%
White Oak Quercus alba 10%
Yellow Po lar Liriodendron tuli ifera 20%
Alternate Species
Northern Red Oak Quercus rubra n/a
Black Cherr Prunus serotina n/a
Black Walnut Ju lans ni ra n/a
Type I Streambank Reforestation -Live Stakes
Black Willow Salix ni ra 50%
Silky Do wood Cornus amomum 50%

APPENDIX E
PHOTOGRAPHS
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Site 1
Site 1
Site 1 Site 1

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Site 4
Site 4
Site 4 Site 4

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Site 8
Site 8
Site 8 Site 8

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Site 11
Site 11
Site 11 Site 11

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Site 12
Site 12
Site 12
Site 12