20140705 Ver 1_Year 3 Monitoring Report_20201001

SELMA MILL STREAM
MITIGATION SITE
JOHNSTON COUNTY, NORTH CAROLINA

YEAR 3 MONITORING REPORT

Neuse River Basin
CU 03020201

Provided by:

Resource Environmental Solutions, LLC
3600 Glenwood Avenue, Suite 100
Raleigh, NC 27612
919-209-1055

September 2020

Selma Mill 1 Year 3 Monitoring Report
Stream Mitigation Site September 2020
Table of Contents
1.0 Project Summary ..................................................................................................................................... 2
1.1 Project Location and Description .............................................................................................. 2
1.2 Project Goals and Objectives .................................................................................................... 3
1.3 Project Success Criteria ............................................................................................................. 3
Stream Success Criteria ................................................................................................................... 3
Vegetation Success Criteria ............................................................................................................. 4
1.4 Project Components .................................................................................................................. 4
1.5 Design/Approach ....................................................................................................................... 5
1.6 Construction and As-Built Conditions ...................................................................................... 5
1.7 Year 3 Monitoring Performance ................................................................................................ 5
Vegetation ........................................................................................................................................ 5
Stream Geomorphology ................................................................................................................... 6
Stream Hydrology ............................................................................................................................ 6
2.0 Methods .................................................................................................................................................. 6
3.0 Reference ................................................................................................................................................ 7 Appendix A: Background Tables Table 1: Project Mitigation Components Table 2: Project Activity and Reporting History Table 3: Project Contacts Table Table 4: Project Contacts Table Figure 1: Site Location Map Appendix B: Visual Assessment Data Figure 2: Current Conditions Plan View Vegetation Plot Photos Stream and Vegetation Problem Areas Appendix C: Vegetation Plot Data Table 5: Planted Species Summary Table 6: Vegetation Plot Mitigation Success Summary Table 7. Stem Count Total and Planted by Plot Species Appendix D: Stream Measurement and Geomorphology Data MY3 Overlay Cross-Section Plots Table 8. Baseline Stream Data Summary Table 9. Cross Section Morphology Data Table Table 10. Stream Reach Morphology Data Table Appendix E: Hydrology Data Table 11. 2020 Rainfall Summary Table 12. Documentation of Geomorphically Significant Flow Events Headwater Valley Restoration Stream Flow Hydrograph Table 13. 2020 Max Hydroperiod Table 14. Summary of Groundwater Monitoring Results Groundwater Hydrographs

Selma Mill 2 Year 3 Monitoring Report
Stream Mitigation Site September 2020
1.0 Project Summary

1.1 Project Location and Description

The Selma Mill Stream Mitigation Site (the “Site”) is located within a watershed dominated by agricultural
and residential land use in Johnston County, North Carolina. Prior to construction, the project streams were
significantly impacted by channelization and agricultural practices. The project involves the restoration and
protection of streams in the Neuse River watershed. The purpose of this mitigation site is to restore and
enhance a stream/wetland complex located within the Neuse River Basin. The Site has been designed in
concurrence with the Selma Mill Riparian Buffer and Nutrient Offset Mitigation Bank. EBX-Neuse I, LLC
(“EBX”), acting as the Bank Sponsor, established a Conservation Easement and will monitor the Site for a
minimum of seven years in accordance with the terms and conditions of the Neu-Con Wetland and Stream
Umbrella Mitigation Bank.

The Site is in Johnston County immediately north of Selma, NC (Figure 1). The latitude and longitude for
the site is 35.547353 ON and -78.282503 OW. The site extends approximately 2,300 feet north on the west
side of NC HWY 96 beginning immediately north of W Chestnut Street. A tributary crosses NC HWY 96
approximately 1,900 feet north of W Chestnut Street and extends approximately 1,600 feet west.

The Site consisted of stream restoration on tributaries that drain directly to Mill Creek. The project presents
6,771 linear feet of Stream Restoration generating 7,305 Stream Mitigation Units (SMU). A combination
of Priority 1 and Priority 2 restoration was used on Reaches A and B and Headwater Valley Restoration on
Reach C. Benefits include the storage of excess water during flood events, preventing erosion of stream
banks, reducing in-stream sedimentation, and nutrient reductions. SMU totals were adjusted using the most
recent non-standard buffer width guidance documents.

The Site consisted of agricultural fields, cattle pastures and wooded areas. The total easement area is 34.2
acres. The wooded areas along the easement corridor designated for restoration activities are classified as
mixed pines and hardwoods. Invasive species are present throughout the wooded areas. Restoration
channels were degraded to a point where they could no longer access their floodplain, lack riparian buffers,
allow livestock access, and aquatic life was not supported. Little aquatic habitat was available to support
aquatic life, and the riparian buffers were not maximizing their potential to filter nutrients.

The Site will be monitored on a regular basis and a physical inspection of the site will be conducted at a
minimum of twice per year throughout the seven-year post-construction monitoring period, or until
performance standards are met. These site inspections will identify site components and features that require
routine maintenance. The measure of stream restoration success will be documented by bankfull flows and
no change in stream channel classification. Sand bed channels are dynamic and minor adjustments to
dimension and profile are expected. The measure of vegetative success for the site will be the survival of
at least 210 seven-year old planted trees per acre with an average height of 10 feet at the end of year seven
of the monitoring period.

Upon approval for closeout by the Interagency Review Team (IRT), the site will be transferred to the North
Carolina Wildlife Habitat Foundation (NCWHF). The NCWHF will be responsible for periodic inspection
of the site to ensure that restrictions required in the Conservation Easement or the deed restriction
document(s) are upheld.

Selma Mill 3 Year 3 Monitoring Report
Stream Mitigation Site September 2020
1.2 Project Goals and Objectives

The 2010 Neuse River Basin River Basin Restoration Priorities (RBRP) identified several restoration needs
for the entire Neuse River Basin, as well as for HUC 03020201, specifically. The Site was identified as a
stream restoration opportunity to improve water quality, habitat, and hydrology within the Neuse 01 River
Basin.

The project goals address stressors identified in the TLW and include the following:
• Nutrient removal,
• Sediment removal,
• Invasive species treatment,
• Filtration of runoff, and
• Improved aquatic and terrestrial habitat.

The project goals will be addressed through the following project objectives:
• Exclusion of livestock,
• Treatment of exotic invasive species,
• Restoration of forested riparian stream buffers,
• Stabilization of eroding stream banks due to lack of vegetation and livestock hoof shear,
• Addition of large woody debris, such as log vanes, log weirs, root wads,
• Preservation and enhancement of hydrology in existing riparian wetland seeps, and
• Restoration of appropriate pattern, dimension, and profile in stream channels.

1.3 Project Success Criteria

The Site follows the USACE 2003 Stream Mitigation Guidelines and subsequent guidance. The Mitigation
Plan was approved in August 2016 and therefore does not adhere to the 2016 Wilmington District Stream
and Wetland Mitigation Update. Cross section data will be reported in Years 0, 1, 2, 3, 5, 7, and vegetation
and stream hydrology data will be reported annually.

Stream Success Criteria

Two bankfull flow events must be documented within the seven-year monitoring period. The two bankfull
events must occur in separate years. Otherwise, the stream monitoring will continue until two bankfull
events have been documented in separate years.

There should be little change in as-built cross-sections. If changes do take place, they should be evaluated
to determine if they represent a movement toward a less stable condition (for example down-cutting or
erosion), or are minor changes that represent an increase in stability (for example settling, vegetative
changes, deposition along the banks, or decrease in width/depth ratio). Cross-sections shall be classified
using the Rosgen stream classification method, and all monitored cross-sections should fall within the
quantitative parameters defined for channels of the design stream type. Bank height ratio shall not exceed
1.2, and the entrenchment ratio shall be no less than 2.2 within restored reaches. Channel stability should
be demonstrated through a minimum of two bankfull events documented in the seven-year monitoring
period.

Digital images will be used to subjectively evaluate channel aggradation or degradation, bank erosion,
success of riparian vegetation, and effectiveness of erosion control measures. Longitudinal images should
not indicate the absence of developing bars within the channel or an excessive increase in channel depth.
Lateral images should not indicate excessive erosion or continuing degradation of the banks over time. A

Selma Mill 4 Year 3 Monitoring Report
Stream Mitigation Site September 2020
series of images over time should indicate successional maturation of riparian vegetation.

Headwater valley restoration reaches will be monitored to document intermittent or seasonal surface flow.
This will be accomplished through direct observation, photo documentation, and the use of stream gauge
transducers with data loggers. Reaches must demonstrate a minimum of 30 consecutive days of flow.

Vegetation Success Criteria

Specific and measurable success criteria for plant density within the riparian buffers on the site will follow
IRT Guidance. Vegetation monitoring plots will be a minimum of 0.02 acres in size, and cover a minimum
of two percent of the planted area. Vegetation monitoring will take place annually between July 15 and
leaf drop. The interim measures of vegetative success for the site will be the survival of at least 320 planted
three-year old trees per acre at the end of Year 3, 260 five-year old trees at the end of Year 5, and the final
vegetative success criteria will be 210 trees per acre with an average height of 10 feet at the end of Year
7. The site includes 25 monitoring plots to monitor the 29.8 planted acres. Volunteer trees will be counted,
identified to species, and included in the yearly monitoring reports, but will not be counted towards the
success criteria of total planted stems.

1.4 Project Components

The project area is comprised of a single easement area along three tributaries that flow into Mill Creek.
The easement is separated by a crossing at NC HWY 96. The western portion of the project originates near
the intersection of Hwy 96 and W Chestnut Street and includes Reaches A1, A2, and B3. The eastern portion
of the project is located in an agricultural field to the east of NC HWY 96. This area includes Reaches B1,
B2, and C. The stream mitigation components are summarized below and in Table 1.

Reach Mitigation
Type*
Stationing
(Proposed)
Existing
Length
(LF)
Proposed
Length
(LF)
Mitigation
Ratio
Base
SMUs**
Adjusted
SMUs***
A P2 Restoration 0+61 to 19+42 1,514 1,881 1:1 1,881 2,068
A P1/P2 Restoration 19+72 to 27+30 630 758 1:1 758 821
A P1 Restoration 27+60 to 34+45 571 685 1:1 685 801
B P2 Restoration 1+94 to 10+39 741 845 1:1 845 903
B P1/P2 Restoration 10+72 to 22+95 1,062 1,223 1:1 1,223 1,334
B P2 Restoration 23+55 to 28+59 405 504 1:1 504 503
C HWV Restoration 0+96 to 11+31 852 875 1:1 875 875
Total 5,775 6,771 6,771 7,305
*P1 = Priority 1; P2 = Priority 2; HWV- Headwater Valley
**Reach C SMUs based on valley length minus 30 feet for the proposed crossing
***See Mitigation Plan for SMU adjustments based on non-standard buffer widths.

Selma Mill 5 Year 3 Monitoring Report
Stream Mitigation Site September 2020
1.5 Design/Approach

The design approach for the Selma Mill Site combined the analog method of natural channel design with
analytical methods to evaluate stream flows and hydraulic performance of the channel and floodplain. The
analog method involves the use of a “template” stream adjacent to, nearby, or previously in the same
location as the design reach. The template parameters of the analog reach are replicated to create the features
of the design reach. The analog approach is useful when watershed and boundary conditions are similar
between the design and analog reaches (Skidmore, et al., 2001). Hydraulic geometry was developed using
analytical methods in an effort to identify the design discharge.

Priority Level 2 restoration was done on Reaches A1, A2, B1, B2, and B3. Priority 1 Restoration was done
on Reach A2 below the confluence with Reach B. For most of the restoration reaches, the channel was
rerouted to adjacent natural valley features. By rerouting the channel and constructing floodplain benches,
the design allows the channel frequent access to its floodplain and the opportunity to create small,
depressional areas within the buffer to enhance habitat for wildlife and aquatic organisms. The headwater
valley restoration approach was done along Reach C. The ditch was plugged and then backfilled to the
extent possible such that cut and fill is balanced along the reach.

1.6 Construction and As-Built Conditions

Stream construction was completed in August 2017. The Site was built to design plans and guidelines. No
major changes or modifications were made during construction activities. Final floodplain grading was
completed in May 2018 along with planting and fencing.

1.7 Year 3 Monitoring Performance

The Selma Mill Year 3 Monitoring (MY3) activities were completed in September 2020. All MY3 data is
present below and in the appendices. The Site is on track to meeting vegetation and stream interim success
criteria.

Vegetation

Monitoring of the 25 permanent vegetation plots was completed during September 2020. Vegetation data
are in Appendix C and associated photos are in Appendix B. MY3 data indicates that all 25 plots are
exceeding the interim success criteria of 320 planted stems per acre. Planted stem densities ranged from
405 to 1,335 planted stems per acre with a mean of 821 planted stems per acre across all plots. A total of
27 species were documented within the plots. Volunteer species were noted in 15 of the vegetation plots.
The average tree height observed was 4.9 feet.

Visual assessment of vegetation outside of the monitoring plots indicates that the herbaceous vegetation is
becoming well established throughout the majority of the project. The lower end of Reach A underwent a
Chinse privet treatment as well as a couple areas of mimosa tree at the top of Reach A and Reach B. Two
areas of encroachment were addressed in May 2020 and there was no evidence of new encroachment during
Year 3 monitoring activities (Figure 2). Supplemental planting was performed in six areas in April 2020
consisting of about 1.50 acres (Figure 2).

Selma Mill 6 Year 3 Monitoring Report
Stream Mitigation Site September 2020
Stream Geomorphology

Geomorphology data for MY3 was collected during July 2020. Summary tables and cross section/profile
plots are in Appendix D. Overall the MY3 cross sections relatively match the as-built conditions. Bank
height ratios remain less than 1.2 and entrenchment ratios greater than 2.2.

Visual assessment of the stream channel was performed to document signs of instability, such as eroding
banks, structural instability, or excessive sedimentation. The channel is transporting sediment as designed
and will continue to be monitored for aggradation and degradation. One area of bank erosion was observed
on Reach A upstream of Cross Section 11. This area was about 30 feet of bank erosion on the outside of a
meander bend. The problem is not systematic and will be revisited next monitoring year to assess severity.
Additionally, the whole site was livestaked again in March 2020 and the vegetation growing in the stream
channels was treated with aquatic safe herbicide in May 2020.

Stream Hydrology

Crest gauges and flow gauges were installed on Reach A and Reach B and a flow gauge was installed on
Reach C. Seventeen total bankfull events were recorded in 2019; 13 on Reach A and four on Reach B. The
flow gauge recorded 120 consecutive flow days on the Headwater Valley Restoration Reach C. Gauge
locations can be found on Figure 2 and hydrology data is in Appendix E.

2.0 Methods

Stream monitoring was conducted using a Topcon GTS-312 Total Station. Three-dimensional coordinates
associated with cross-section data was collected in the field (NAD83 State Plane feet FIPS 3200).
Morphological data was collected at 28 cross-sections. Survey data was imported into CAD, ArcGIS®, and
Microsoft Excel® for data processing and analysis. In April 2018 crest gauges and flow gauges were
installed on Reaches A and B and a flow gauge was installed on Reach C. The flow gauges were installed
within the channel and will continuously record flow conditions at an hourly interval. The crest gauges
were installed on the bank at the bankfull elevation. During quarterly visits to the Site, the height of the
corkline will be recorded. HOBO data from the flow gauges will be corrected using bankfull recordings
from the crest gauges. If there are no corkline readings, the height of the top of bank and water depth will
be recorded and bankfull events will be calculated in Excel. The flow gauge on the headwater valley
restoration reach is calibrated to the height of the nearest downstream riffle to document consecutive flow
days.

Vegetation success is being monitored at 25 permanent monitoring plots. Vegetation plot monitoring
follows the CVS-EEP Level 2 Protocol for Recording Vegetation, version 4.2 (Lee et al. 2008) and includes
analysis of species composition and density of planted species. Data is processed using the CVS data entry
tool. In the field, the four corners of each plot were permanently marked with PVC at the origin and metal
conduit at the other corners. Photos of each plot are to be taken from the origin each monitoring year.

Wetland hydrology is monitored to document maintenance of jurisdictional groundwater levels in the
stream restoration area (as requested by NCIRT). This is accomplished with two automatic pressure
transducer gauges (located in groundwater wells) that record daily groundwater levels. One automatic
pressure transducer is installed above ground for use as a barometric reference. Gauges are downloaded
quarterly and wetland hydroperiods are calculated during the growing season. Gauge installation followed
current regulatory guidance. Visual observations of primary and secondary wetland hydrology indicators
are also recorded during quarterly site visits.

Selma Mill 7 Year 3 Monitoring Report
Stream Mitigation Site September 2020
3.0 Reference

Environmental Laboratory. 1987. U.S. Army Corps of Engineers Wetlands Delineation Manual,
Technical Report Y-87-1. U.S. Army Engineer Waterways Experiment Station, Vicksburg, Mississippi.

Harman, W., R. Starr, M. Carter, K. Tweedy, M. Clemmons, K. Suggs, C. Miller. 2012. A Function-
Based Framework for Stream Assessment and Restoration Projects. US Environmental Protection
Agency, Office of Wetlands, Oceans, and Watersheds, Washington, DC EPA 843-K-12-006.

Lee Michael T., Peet Robert K., Roberts Steven D., and Wentworth Thomas R., 2008. CVS-EEP Protocol
for Recording Vegetation Level. Version 4.2

North Carolina Division of Mitigation Services (NCDMS). “Broad River Basin Restoration Priorities
2009.” (September 2014).

Resource Environmental Solutions (2016). Selma Mill Stream Mitigation Site Final Mitigation Plan.

Rosgen, D. (1996), Applied River Morphology, 2nd edition, Wildland Hydrology, Pagosa Springs, CO.

Schafale, M.P. and A.S. Weakley. 2012. Classification of the Natural Communities of North Carolina,
Fourth Approximation. North Carolina Natural Heritage Program, Division of Parks and Recreation,
NCDENR, Raleigh, NC.

US Army Corps of Engineers (USACE), 2003. April 2008 NC Stream Mitigation Guidelines.

U.S. Army Corps of Engineers (USACE). 2010. Regional Supplement to the Corps of Engineers Wetland
Delineation Manual: Atlantic and Gulf Coastal Plain Region (Version 2.0), ed. J. S. Wakeley, R. W.
Lichvar, and C. V. Noble. ERDC/EL TR-10-20. Vicksburg, MS: U.S. Army Engineer Research and
Development Center.

Appendix A
Background Tables

Table 1.  Selma Mill Stream Mitigation Site ‐ Mitigation Assets and ComponentsExisting MitigationProject Wetland Footage Plan Approach AdjustedComponent Position and or Footage or Restoration Priority Mitigation Mitigation Mitigation(reach ID, etc.)1HydroType2Acreage Stationing Acreage Level Level Ratio (X:1) CreditsCredits4Notes/CommentsReach A 1,514 0+61 to 19+42 1,881 R P2 1 1,881 2,068Full Channel Restoration, Channel Relocation, Planted Buffer, Exclusion of Livestock, Permanent Conservation EasementReach A 630 19+72 to 27+30 758 R P1/P2 1 758 821Full Channel Restoration, Channel Relocation, Planted Buffer, Exclusion of Livestock, Permanent Conservation EasementReach A 571 27+60 to 34+45 685 R P1 1 685 801Full Channel Restoration, Channel Relocation, Planted Buffer, Exclusion of Livestock, Permanent Conservation EasementReach B 741 1+94 to 10+39 845 R P2 1 845 903Full Channel Restoration, Planted Buffer, Permanent Conservation Easement.Reach B 1,062 10+72 to 22+95 1,223 R P1/P2 1 1,223 1,334Full Channel Restoration, Planted Buffer, Permanent Conservation Easement.Reach B 405 23+55 to 28+59 504 R P2 1 504 503Full Channel Restoration, Channel Relocation, Planted Buffer, Exclusion of Livestock, Permanent Conservation EasementReach C 852 0+96 to 11+31 875 R HWV 1 875 875HWV Rsetoration, Planted Buffer, Permanent Conservation EasementLength and Area Summations by Mitigation CategoryOverall Assets SummaryStreamNon-riparian WetlandOverall(linear feet) (acres)CreditsRiverine Non-RiverineRestoration 6,7717,305EnhancementEnhancement IEnhancement IICreationPreservationHigh Quality PresNR WetlandAsset CategoryRestoration LevelRiparian Wetland(acres)StreamRNR WetlandGeneral Note ‐ The above component table is intended to be a close complement to the  asset map.  Each  entry in the above table should have clear distinction and  appropriate symbology in the asset map.    1 ‐Wetland Groupsrepresent pooled wetland polygons in the map with the  same  wetland type and restoration level.  If some of the wetland polygons within a  group  are in meaningfully different landscape positions,  soil types or have different community targets (as examples), then further segmentation in the table may be warranted.  Buffer groups represent  pooled buffer polygons with common restoration levels. 2 ‐Wetland Position and Hydro Type  ‐ Indicates Riparian  Riverine, (RR) , riparinan non‐riverine (RNR) or Non‐Riverine (NR)3‐RestoredFootage, Acreage or Square Feet (SF)4 ‐Creditible Footage, Acreage or Square feet ‐ creditible anounts after exclusion and reductions are accounted for, such as utility impacts, crossings, single sided easements etc.General Note ‐ The above component table is intended to be a close complement to the  asset map.  Each  entry in the above table should have clear distinction and  appropriate symbology in the asset map.    1 ‐Wetland Groupsrepresent pooled wetland polygons in the map with the  same  wetland type and restoration level.  If some of the wetland polygons within a  group  are in meaningfully different landscape positions,  soil types or have different community targets (as examples), then further segmentation in the table may be warranted.  Wetland features impacted by credit modifiers such as utilities shall be listed as a distinct record with the impacted acreage tallied as discreet records in the table (See Wetland 7 above)2 ‐Wetland Position and Hydro Type  ‐ Indicates Riparian  Riverine, (RR) , riparinan non‐riverine (RNR) or Non‐Riverine (NR)3‐Buffer Assets ‐ due to the complex nature of buffer and nutrient offset assets they are not included in this example table.  Please see the DMS buffer mitigation plan template for the required asset table information. 4 ‐ Adjusted Mitigation Credits are based on the non‐standard buffer widths.
Elapsed Time Since grading complete: 3 years 1 month
Elapsed Time Since planting complete: 2 years 4 months
Number of reporting Years1:3
Data Collection Completion or
Activity or Deliverable Complete Delivery
Restoration Plan NA Aug-16
Final Design – Construction Plans NA Feb-17
Construction NA Aug-17
Site Planting NA May-18
As-built (Year 0 Monitoring – baseline) May-18 Jun-18
Year 1 Monitoring Nov-18 Dec-18
Year 2 Monitoring Sep-19 Oct-19
Supplemental Planting + Livestaking NA Apr-20
Encroachment Repair NA May-20
Invasive Species Treatment NA Sep-20
Year 3 Monitoring XS: July-20
VP: Sep-20 Sep-20
Year 4 Monitoring
Year 5 Monitoring
Year 6 Monitoring
Year 7 Monitoring
1 = The number of reports or data points produced excluding the baseline
Table 2. Project Activity and Reporting History
Selma Mill Stream Mitigation Site
Designer WK Dickson
Primary project design POC Frasier Mullen [phone]
Construction Contractor Wright Contracting / PO Box 545, Siler City, NC 273444
Construction contractor POC Joseph Wright / [phone]
Survey Contractor Matrix East, PLLC / 906 N. Queen St., Suite A, Kinston, NC
28501
Survey contractor POC James R. Watson, PLS / [phone]
Planting Contractor H&J Forestry
Planting contractor POC Matt Hitch
Seeding Contractor Wright Contracting / PO Box 545, Siler City, NC 273444
Contractor point of contact Joseph Wright / [phone]
Seed Mix Sources Green Resource [phone]
Nursery Stock Suppliers Arborgen [phone]
Monitoring Performers RES / 3600 Glenwood Ave, Suite 100, Raleigh, NC 27612
Stream Monitoring POC Ryan Medric [phone]
Vegetation Monitoring POC Ryan Medric [phone]
Wetland Monitoring POC N/A
Table 3. Project Contacts Table
Selma Mill Stream Mitigation Site
USGS Hydrologic Unit 8-digit 3020201
A1 A2 B1 B2 B3 C
938 1625 1396 278 444 921
XXXXXX
267 583 138 189 189 42
Perennial Perennial Perennial Perennial Perennial Intermittent
N/A N/A N/A N/A N/A N/A
G5c/B5 G5c G5c G5c G5c G5c
E5 E5 E5 E5 E5 HWV
II / IV II VI II II II
N/A N/A N/A N/A N/A N/A
Supporting
Docs?
SAW-2015-
00710
DWR # 14-
0705
USFWS
(Corr. Letter)
SHPO (Corr.
Letter)
N/A
Town of
Selma (Corr.
Letter)
N/A
Physiographic Province Coastal Plain
Table 4. Project Background Information
Project Name Selma Mill
County Johnston
Project Area (acres) 34.2
Project Coordinates (latitude and longitude) Latitude: 35.542346 N Longitude: -78.284053 W
Planted Acreage (Acres of Woody Stems Planted) 29.8
Project Watershed Summary Information
River Basin Neuse
USGS Hydrologic Unit 14-digit 3020201100050
DWR Sub-basin 03-04-02
Project Drainage Area (Acres and Square Miles) 583
Project Drainage Area Percentage of Impervious Area 35%
CGIA Land Use Classification Agriculture; Residential; Forest; Industrial/Commercial
Valley confinement (Confined, moderately confined, unconfined)
Drainage area (Acres and Square Miles)
Reach Summary Information
Parameters
Length of reach (linear feet)
Evolutionary trend (Simon)
FEMA classification
Stream Classification (existing)
Stream Classification (proposed)
Perennial, Intermittent, Ephemeral
NCDWR Water Quality Classification
Regulatory Considerations
Parameters Applicable? Resolved?
Water of the United States - Section 404 Yes Yes
Water of the United States - Section 401 Yes Yes
Endangered Species Act Yes Yes
Historic Preservation Act Yes Yes
Coastal Zone Management Act (CZMA or CAMA) No N/A
FEMA Floodplain Compliance Yes Yes
Essential Fisheries Habitat No N/A
Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, EsriJapan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, ©OpenStreetMap contributors, and the GIS User Community
0 1,000500
Feet
Figure 1 - Site Location M ap
Selma Mill Buffer/Nutrient Site
Johnston County, North Carolina
Legend
Conservation Easement
©Date: 12/11/2018
Drawn by: RTM
Checked by: BPB
Document Path: S:\@RES Projects\North Carolina\Neu-Con UMBI\0180 - Selma Mill\Monitoring\Monitoring Data\GIS\MY0\MXD\NCDWR Figures\Figure 1 Selma Mill Location Map.mxd1 inch = 1,000 feet

Appendix B
Visual Assessment Data

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Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community
©
0 300150
Feet
Figure 2
Current Co ndition sPlan View
MY3 202 0
Se lma Mill StreamMitigation Site
Johnston County, NC
LEGEND
Conservation EasementVegetation Plot>320 stems/acreRestorationHWV RestorationExisting Wetlands2020 Adaptive ManagementEncroachment RepairSupplemental PlantingTop of BankCross Section
!>Flow/Crest Gauge
!>Rain Gauge/AmbientWell Hydrop eriod
!?>5%
Date: 9/29/2020 Drawn by: RTM
Document Path: R:\offices\olddropboxprojects\North Carolina\Neu-Con UMBI\Selma Mill\Monitoring\Monitoring Data\GIS\MY3\USACE Figures\Selma Mill MY3 CCPV Overview.mxdLat: 35.542346 Long: -78.284053
Reach AP2 Re stora tion
Reach AP1 Re stora tion
Reach BP2 Re stora tion
Reach BP1 Re stora tion
Reach BP2 Re stora tion
Reach CHWV Restoration
Vegeta tion Conditio n As ses smen t
AbsentPresentMarginal
Absent
Present
Target Community
Invasive SpeciesNo Fill
Selma Mill MY3 Vegetation Monitoring Plot Photos

Vegetation Plot 1 (9/16/2020)

Vegetation Plot 2 (9/16/2020)
Vegetation Plot 3 (9/16/2020) Vegetation Plot 4 (9/16/2020)

Vegetation Plot 5 (9/16/2020) Vegetation Plot 6 (9/16/2020)

Vegetation Plot 7 (9/16/2020)

Vegetation Plot 8 (9/16/2020)
Vegetation Plot 9 (9/16/2020) Vegetation Plot 10 (9/16/2020)

Vegetation Plot 11 (9/16/2020)

Vegetation Plot 12 (9/16/2020)

Vegetation Plot 13 (9/16/2020)

Vegetation Plot 14 (9/16/2020)
Vegetation Plot 15 (9/16/2020) Vegetation Plot16 (9/16/2020)

Vegetation Plot 17 (9/16/2020) Vegetation Plot 18 (9/16/2020)

Vegetation Plot 19 (9/16/2020)

Vegetation Plot 20 (9/16/2020)
Vegetation Plot 21 (9/16/2020) Vegetation Plot 22 (9/16/2020)

Vegetation Plot 23 (9/16/2020) Vegetation Plot 24 (9/16/2020)

Vegetation Plot 25 (9/16/2020)

VPA3 / Low Stem Density / VP10 / 0.17 acres
(Resolved April 2020)
Stream Problem Areas
Selma Mill
Vegetation Problem Areas
VPA2 / Low Stem Density / VP20 / 0.77 acres
(Resolved April 2020)
PhotoMap Label / Feature Category / Location / Size
VPA1 / Encroachment / Reach B / 0.05 acres
(Resolved May 2020)
Selma Mill
PhotoMap Label / Feature Issue / Location
SPA1 / LB Erosion / Reach A
(Stable in MY3)

Appendix C
Vegetation Plot Data

  Appendix C. Vegetation Assessment Data

Table 5. Planted Species Summary

Table 6. Vegetation Plot Mitigation Success Summary 

Common Name Scientific Name Total Stems Planted
Green Ash Fraxinus pennsylvanica 6500
Water Oak Quercus nigra 5500
Sycamore Platanus occidentalis 5000
Willow Oak Quercus phellos 5000
Swamp Chestnut Oak Quercus michauxii 4100
Blackgum Nyssa sylvatica 4000
Yellow‐Poplar Liriodendron tulipifera 3000
River Birch Betula nigra 2600
Baldcypress Taxodium distichum 1300
Shumard Oak Quercus shumardii 1000
Overcup Oak Quercus lyrata 995
Silky Dogwood Cornus amomum 502
Buttonbush Cephalanthus occidentalis 500
Cherrybark Oak Quercus pagoda 500
Persimmon Diospyros virginiana 500
Water Tupelo Nyssa aquatica 400
41,397Total
Plot #Planted
Stems/Acre
Volunteer
Stems/Acre
Total
Stems/Acre
Success
Criteria
Met?
Average
Planted Stem
Height (ft)
1 931 1295 2226 Yes 5.2
2 728 364 1093 Yes 4
3 769 1983 2752 Yes 3.8
4 1012 688 1700 Yes 3.4
5 1295 971 2266 Yes 3.5
6 769 405 1174 Yes 8
7 1052 324 1376 Yes 7.6
8 890 0 890 Yes 6.5
9 445 40 486 Yes 4.6
10 405 0 405 Yes 2.9
11 486 364 850 Yes 3.7
12 769 243 1012 Yes 4.2
13 688 81 769 Yes 5
14 728 0 728 Yes 4.6
15 769 0 769 Yes 4
16 1012 364 1376 Yes 2.8
17 850 283 1133 Yes 5.7
18 486 0 486 Yes 5.2
19 567 0 567 Yes 5.4
20 607 0 607 Yes 2.8
21 850 0 850 Yes 3.5
22 1255 2630 3885 Yes 6.6
23 931 0 931 Yes 9.2
24 890 607 1497 Yes 5.77
25 1335 0 1335 Yes 5.3
Project Avg 821 426 1246 Yes 4.9
  Appendix C. Vegetation Assessment Data  Table 7. Stem Count Total and Planted by Plot Species    PnoLS P‐all T PnoLS P‐all T PnoLS P‐all T PnoLS P‐all T PnoLS P‐all T PnoLS P‐all T PnoLS P‐all T PnoLS P‐all T PnoLS P‐all T PnoLS P‐all T PnoLS P‐all T PnoLSP‐all T PnoLS P‐all T PnoLS P‐all TBetula nigra river birch Tree 333222222555226111111111666 111222 111111Carya hickory TreeCornus amomum silky dogwood ShrubCrataegus aestivalis may hawthorn Shrub TreeDiospyros virginiana common persimmon Tree444Fraxinus pennsylvanicagreen ash Tree 101010 222777 2 8111777 222Juglans nigra black walnut Tree1Liquidambar styraciflua sweetgum Tree 1 7 2 2 1 8 6 2Liriodendron tulipiferatuliptree Tree 222 111444111Nyssa tupelo TreeNyssa aquatica water tupelo Tree 666 111Nyssa sylvatica blackgum Tree 111111333222222222 444111 444999Pinus taeda loblolly pine Tree 31 2 31 17 7 51Platanus occidentalis American sycamoreTree 222 44226663312111444222 666Quercus oak TreeQuercus falcata southern red oak TreeQuercus lyrata overcup oak Tree 111 111111 111222555 222Quercus michauxii swamp chestnut oakTree 999777 1111111111115552222 2 2 3 3 3 13 13 13Quercus nigra water oak Tree 1 1 1Quercus pagoda cherrybark oak TreeQuercus phellos willow oak Tree 1 1 1 2 2 2 2 2 2 1 1 1 9 9 10 8 8 8 1 1 1 2 2 2 2 2 2 1 1 1 1 1 1Quercus rubra northern red oak TreeQuercus shumardii Shumard's oak Tree111Rhus copallinum flameleaf sumac shrub1Salix nigra black willow TreeSambucus canadensis Common Elderberry ShrubTaxodium distichum bald cypress Tree9996661111 1 1 2 2 2 11 11 1123 23 55 18 18 27 19 19 68 25 25 42 32 32 56 19 19 29 26 26 34 22 22 22 11 11 12 10 10 10 12 122119192517171918181866877966766799128812334666445444668556445555931 931 2226 728 728 1093 769 769 2752 1012 1012 1700 1295 1295 2266 769 769 1174 1052 1052 1376 890 890 890 445 445 485.6 405 405 405 486 486 850 769 769 1012 688 688 768.9 728 728 728.4Selma MillCurrent Plot Data (MY3 2020)10.020.0210.0210.020.0210.0210.020.0210.0210.020.0210.0210.02Stem countsize (ares)size (ACRES)Species countStems per ACRE0.0205232018‐01‐0013 05232018‐01‐0014105232018‐01‐0009 05232018‐01‐0010 05232018‐01‐0011 05232018‐01‐00121111Scientific Name Common Name Species Type05232018‐01‐0001 05232018‐01‐0002 05232018‐01‐0003 05232018‐01‐0004 05232018‐01‐0005 05232018‐01‐0006 05232018‐01‐0007 05232018‐01‐0008PnoLS P‐all T PnoLS P‐all T PnoLS P‐all T PnoLS P‐all T PnoLS P‐all T PnoLS P‐all T PnoLS P‐all T PnoLS P‐all T PnoLS P‐all T PnoLS P‐all T PnoLS P‐all T PnoLSP‐all T PnoLS P‐all T PnoLS P‐all T PnoLS P‐all TBetula nigra river birch Tree 3 3 3 5 5 5 3 3 3 7 7 755 55 59 52 52 55 60 60 60 74 74 74Carya hickory Tree3Cornus amomum silky dogwood Shrub111 111222333333444Crataegus aestivalis may hawthorn Shrub Tree111 111111111111Diospyros virginiana common persimmon Tree444888888222222Fraxinus pennsylvanicagreen ash Tree 222171717447444222 555 888333747487757585777777797979Juglans nigra black walnut Tree1Liquidambar styraciflua sweetgum Tree 1131585Liriodendron tulipifera tuliptree Tree1119 9 9111113181820464646Nyssa tupelo Tree111Nyssa aquatica water tupelo Tree1118 8 8 9 9 9 33 33 33 44 44 44Nyssa sylvatica blackgum Tree 111111 222 44437 37 37 37 37 37 34 34 34 47 47 47Pinus taeda loblolly pine Tree 865 14 181 26 47Platanus occidentalis American sycamoreTree 222111 111444222 77755550 50 77 42 42 64 40 40 40 56 56 56Quercus oak Tree1 1 1 1 1 1 1 1 1 16 16 16 49 49 49Quercus falcata southern red oak Tree5 5 5 3 3 3 5 5 5 7 7 7202020202020121212181818Quercus lyrata overcup oak Tree 1 1 111115 15 15 12 12 12Quercus michauxii swamp chestnut oakTree 555 111 333 777222727272787878696969747474Quercus nigra water oak Tree 222 1111111116 6 6 6 6 6 11 11 11 13 13 13Quercus pagoda cherrybark oak Tree222Quercus phellos willow oak Tree 33311111522233322211111188813131311 1 16 16 16 91 91 96 88 88 90 107 107 107 114 114 114Quercus rubra northern red oak Tree 16 16 16 2 2 2 3 3 3 6 6 6 27 27 27 24 24 24 23 2323232323Quercus shumardii Shumard's oak Tree111111Rhus copallinum flameleaf sumac shrub14Salix nigra black willow Tree2Sambucus canadensis Common Elderberry Shrub2Taxodium distichum bald cypress Tree30 30 30 30 30 30 34 34 34 35 35 3519 19 19 25 25 34 21 21 28 12 12 12 14 14 14 15 15 15 21 21 21 31 31 96 23 23 23 22 22 37 33 33 33 507 507 770 500 500 634 541 541 595 679 679 679888557333666666555666556555557666181822191925171719161616769 769 769 1012 1012 1376 850 850 1133 486 486 486 567 567 567 607 607 607 850 850 850 1255 1255 3885 931 931 931 890 890 1497 1335 1335 1335 821 821 809 809 809 1026 876 876 963 1099 1099 1099Species countStems per ACRESelma Mill0.62Scientific Name Common Name Species TypeStem countsize (ares)size (ACRES)25 250.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.62 0.62 0.62MY2 (2019) MY1 (2018) MY0 (2018)111111111112525Current Plot Data (MY3 2020)Annual Means05232018‐01‐0015 05232018‐01‐0016 05232018‐01‐0017 05232018‐01‐0018 05232018‐01‐0019 05232018‐01‐0020 05232018‐01‐0021 05232018‐01‐0022 05232018‐01‐0023 05232018‐01‐0024 05232018‐01‐0025 MY3 (2020)

Appendix D
Stream Measurement and
Geomorphology Data

Upstream Downstream1591601611621631641650 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach A Cross Section 1 - ShallowBaselineMY1MY2MY3Approx. BankfullLow Bank HeightFloodprone AreaBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1161.8 161.8 162.0 162.0Bankfull Width (ft)113.2 13.1 13.7 21.5Floodprone Width (ft)1>50.2 >50.2 >50.2 >50.1Bankfull Mean Depth (ft) 1.0 1.0 1.0 --Bankfull Max Depth (ft)21.8 1.8 1.9 0.9Low Bank Elevation -- -- -- 161.0Bankfull Cross Sectional Area (ft2)213.1 13.1 13.1 2.5Bankfull Width/Depth Ratio 13.3 13.2 14.4 --Bankfull Entrenchment Ratio1>3.8 >3.8 >3.7 >2.3Bankfull Bank Height Ratio11.0 1.0 1.0 0.5Cross Section 1 (Shallow)
Upstream DownstreamBaseMY1MY2MY3MY5MY7MY+Bankfull Elevation (ft) - Based on AB-XSA1161.7 161.5 161.4 161.3Bankfull Width (ft)114.3 12.7 11.5 11.4Floodprone Width (ft)1>50.1 >50.0 >50.0 >50Bankfull Mean Depth (ft) 1.5 1.7 1.9 --Bankfull Max Depth (ft)22.9 3.2 3.1 3.6Low Bank Elevation -- -- -- 161.8Bankfull Cross Sectional Area (ft2)221.5 21.5 21.5 27.2Bankfull Width/Depth Ratio 9.5 7.5 7.1 --Bankfull Entrenchment Ratio1N/A N/A N/A N/ABankfull Bank Height Ratio1N/A N/A N/A N/ACross Section 2 (Pool)1581591601611621631640 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach A Cross Section 2 - PoolBaselineMY1MY2MY3Approx. BankfullLow Bank Height
Upstream Downstream1581591601611621631640 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach A Cross Section 3 - ShallowBaselineMY1MY2MY3Approx. BankfullLow Bank HeightFloodprone AreaBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1160.1 160.2 160.5 160.4Bankfull Width (ft)112.1 17.1 9.3 11.3Floodprone Width (ft)1>50 >50.0 >50 >50.1Bankfull Mean Depth (ft) 0.9 0.6 1.1 --Bankfull Max Depth (ft)21.4 1.4 1.7 1.3Low Bank Elevation -- -- -- 160.0Bankfull Cross Sectional Area (ft2)210.6 10.6 10.6 6.6Bankfull Width/Depth Ratio 13.8 27.7 8.1 --Bankfull Entrenchment Ratio1>4.1 >2.9 >5.4 >4.4Bankfull Bank Height Ratio11.0 0.9 0.8 0.7Cross Section 3 (Shallow)
Upstream Downstream1561571581591601611620 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach A Cross Section 4 - Pool BaselineMY1MY2MY3Approx. BankfullLow Bank HeightBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1160.0 160.1 160.2 160.2Bankfull Width (ft)113.2 20.9 19.9 29.6Floodprone Width (ft)1>49.8 >49.9 >49.9 >49.9Bankfull Mean Depth (ft) 1.4 0.9 0.9 --Bankfull Max Depth (ft)22.8 2.9 2.7 2.8Low Bank Elevation -- -- -- 160.1Bankfull Cross Sectional Area (ft2)218.2 18.2 18.2 16.1Bankfull Width/Depth Ratio 9.6 24.0 21.7 --Bankfull Entrenchment Ratio1N/A N/A N/A N/ABankfull Bank Height Ratio1N/A N/A N/A N/ACross Section 4 (Pool)
Upstream DownstreamBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1158.8 158.7 158.8 158.9Bankfull Width (ft)112.0 11.7 12.2 13.3Floodprone Width (ft)1>50 >50.3 >50.3 >50.3Bankfull Mean Depth (ft) 1.3 1.3 1.3 --Bankfull Max Depth (ft)22.1 2.0 2.1 1.6Low Bank Elevation -- -- -- 158.6Bankfull Cross Sectional Area (ft2)215.3 15.3 15.3 12.3Bankfull Width/Depth Ratio 9.4 8.9 9.7 --Bankfull Entrenchment Ratio1N/A N/A N/A N/ACross Section 5 (Pool)156157158159160161162036912151821242730333639424548Elevation (ft)Distance (ft)Selma Mill Reach A Cross Section 5 - PoolBaselineMY1MY2MY3Approx. BankfullLow Bank Height
Upstream Downstream1561571581591601611620 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach A Cross Section 6 - ShallowBaselineMY1MY2MY3Approx. BankfullLow Bank HeightFloodprone AreaBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1158.7 158.8 158.8 158.8Bankfull Width (ft)113.4 12.7 12.4 13.2Floodprone Width (ft)1>50.2 >50.1 >50.1 >50.0Bankfull Mean Depth (ft) 1.0 1.0 1.0 --Bankfull Max Depth (ft)21.6 1.7 1.7 1.7Low Bank Elevation -- -- -- 158.8Bankfull Cross Sectional Area (ft2)212.8 12.8 12.8 12.5Bankfull Width/Depth Ratio 14.0 12.6 12.0 --Bankfull Entrenchment Ratio1>3.8 >3.9 >4.0 >3.8Bankfull Bank Height Ratio11.0 1.0 1.0 1.0Cross Section 6 (Shallow)
Upstream Downstream1561571581591601611620 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach A Cross Section 7 - ShallowBaselineMY1MY2MY3Approx. BankfullLow Bank HeightFloodprone AreaBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1158.2 158.3 158.5 158.5Bankfull Width (ft)113.2 13.6 14.5 14.1Floodprone Width (ft)1>52.8 >52.9 >52.9 >52.8Bankfull Mean Depth (ft) 0.8 0.8 0.7 --Bankfull Max Depth (ft)21.41.41.31.3Low Bank Elevation -- -- -- 158.4Bankfull Cross Sectional Area (ft2)210.5 10.5 10.5 8.9Bankfull Width/Depth Ratio 16.5 17.6 19.6 --Bankfull Entrenchment Ratio1>4.0 >3.9 >3.6 >1.3Bankfull Bank Height Ratio11.01.00.90.9Cross Section 7 (Shallow)
Upstream Downstream1551561571581591601610 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach A Cross Section 8- PoolBaselineMY1MY2MY3Approx. BankfullLow Bank HeightBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1158.1 158.2 158.2 158.1Bankfull Width (ft)111.3 12.2 11.7 11.3Floodprone Width (ft)1>48.1 >48.2 >48.2 >48.5Bankfull Mean Depth (ft) 1.5 1.4 1.4 --Bankfull Max Depth (ft)22.5 2.9 2.6 2.6Low Bank Elevation -- -- -- 158.1Bankfull Cross Sectional Area (ft2)216.5 16.5 16.5 16.1Bankfull Width/Depth Ratio 7.7 9.0 8.3 --Bankfull Entrenchment Ratio1N/A N/A N/A N/ABankfull Bank Height Ratio1N/A N/A N/A N/ACross Section 8 (Pool)
Upstream Downstream1541551561571581591600 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach A Cross Section 9 - ShallowBaselineMY1MY2MY3Approx. BankfullLow Bank HeightFloodprone AreaBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1157.2 157.3 157.3 157.3Bankfull Width (ft)113.9 18.9 14.2 17.8Floodprone Width (ft)1>50.1 >50.1 >50.1 >50.1Bankfull Mean Depth (ft) 1.2 0.9 1.1 --Bankfull Max Depth (ft)22.0 1.9 1.9 1.7Low Bank Elevation -- -- -- 157.2Bankfull Cross Sectional Area (ft2)216.3 16.3 16.3 14.0Bankfull Width/Depth Ratio 11.8 22.0 12.5 --Bankfull Entrenchment Ratio1>3.6 >2.6 >3.5 >2.8Bankfull Bank Height Ratio11.0 1.0 0.9 0.9Cross Section 9 (Shallow)
Upstream Downstream1541551561571581591600 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach A Cross Section 10 - PoolBaselineMY1MY2MY3Approx. BankfullLow Bank HeightBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1156.7 156.7 156.7 156.7Bankfull Width (ft)113.4 13.4 13.3 13.3Floodprone Width (ft)1>50.6 >55.2 >55.2 >55.2Bankfull Mean Depth (ft) 1.2 1.2 1.3 --Bankfull Max Depth (ft)22.4 2.5 2.4 3.0Low Bank Elevation -- -- -- 157.2Bankfull Cross Sectional Area (ft2)216.7 16.7 16.7 23.3Bankfull Width/Depth Ratio 10.8 10.7 10.6 --Bankfull Entrenchment Ratio1N/A N/A N/A N/ABankfull Bank Height Ratio1N/A N/A N/A N/ACross Section 10 (Pool)
Upstream Downstream1531541551561571581590 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach A Cross Section 11 - PoolBaselineMY1MY2MY3Approx. BankfullLow Bank HeightBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1155.6 155.6 155.8 155.7Bankfull Width (ft)113.0 14.2 15.4 14.0Floodprone Width (ft)1>50.1 >50.1 >50.1Bankfull Mean Depth (ft) 1.2 1.1 1.0 --Bankfull Max Depth (ft)22.2 2.2 2.2 2.3Low Bank Elevation -- -- -- 155.5Bankfull Cross Sectional Area (ft2)215.7 15.7 15.7 13.4Bankfull Width/Depth Ratio 10.8 12.8 15.0 --Bankfull Entrenchment Ratio1N/AN/AN/AN/ABankfull Bank Height Ratio1N/AN/AN/AN/ACross Section 11 (Pool)
Upstream Downstream1531541551561571581590 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach A Cross Section 12 - ShallowBaselineMY1MY2MY3Approx. BankfullLow Bank HeightFloodprone AreaBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1155.9 155.9 156.2 156.1Bankfull Width (ft)113.3 13.9 13.7 14.0Floodprone Width (ft)1>50 >50.1 >50.1 >50Bankfull Mean Depth (ft) 1.2 1.1 1.1 --Bankfull Max Depth (ft)22.1 2.1 2.0 2.0Low Bank Elevation -- -- -- 155.9Bankfull Cross Sectional Area (ft2)215.6 15.6 15.6 13.8Bankfull Width/Depth Ratio 11.4 12.4 12.1 --Bankfull Entrenchment Ratio1>3.7 >3.6 >3.6 >3.6Bankfull Bank Height Ratio11.0 1.0 0.9 0.9Cross Section 12 (Shallow)
Upstream Downstream1521531541551561571580 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach A Cross Section 13 - PoolBaselineMY1MY2MY3Approx. BankfullLow Bank HeightBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1155.4 155.5 155.3 155.1Bankfull Width (ft)113.4 14.0 13.6 14.9Floodprone Width (ft)1>50 >50.0 >50.0 >50Bankfull Mean Depth (ft) 1.5 1.4 1.4 --Bankfull Max Depth (ft)22.7 2.8 2.7 2.7Low Bank Elevation -- -- -- 155.3Bankfull Cross Sectional Area (ft2)219.7 19.7 19.7 18.3Bankfull Width/Depth Ratio 9.2 9.9 9.4 --Bankfull Entrenchment Ratio1N/AN/AN/AN/ABankfull Bank Height Ratio1N/AN/AN/AN/ACross Section 13 (Pool)
Upstream Downstream1651661671681691701710 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach B Cross Section 14 - PoolBaselineMY1MY2MY3Approx. BankfullLow Bank HeightBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1167.9 167.9 168.1 168.0Bankfull Width (ft)112.2 17.5 10.3 17.7Floodprone Width (ft)1>42.7 >43.4 >43.4 >43.4Bankfull Mean Depth (ft) 1.1 0.7 1.3 --Bankfull Max Depth (ft)22.0 1.9 2.0 1.7Low Bank Elevation -- -- -- 167.8Bankfull Cross Sectional Area (ft2)213.0 13.0 13.0 9.0Bankfull Width/Depth Ratio 11.4 23.7 8.2 --Bankfull Entrenchment Ratio1N/A N/A N/A N/ABankfull Bank Height Ratio1N/A N/A N/A N/ACross Section 14 (Pool)
Upstream Downstream1651661671681691701710 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach B Cross Section 15 - ShallowBaselineMY1MY2MY3Approx. BankfullLow Bank HeightFloodprone AreaBaseMY1MY2MY3MY5MY7MY+Bankfull Elevation (ft) - Based on AB-XSA1167.8 167.8 167.8 167.9Bankfull Width (ft)110.5 15.9 20.0 10.1Floodprone Width (ft)1>50.4 >50.4 >50.4 >50.3Bankfull Mean Depth (ft) 0.8 0.5 0.4 --Bankfull Max Depth (ft)21.6 1.4 1.4 1.3Low Bank Elevation -- -- -- 167.7Bankfull Cross Sectional Area (ft2)28.6 8.6 8.6 6.3Bankfull Width/Depth Ratio 12.9 29.4 19.0 --Bankfull Entrenchment Ratio1>4.8 >3.2 >3.9 >5Bankfull Bank Height Ratio11.0 1.0 0.9 0.8Cross Section 15 (Shallow)
Upstream Downstream1651661671681691701710 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach B Cross Section 16 - ShallowBaselineMY1MY2MY3Approx. BankfullLow Bank HeightFloodprone AreaBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1166.9 167.1 167.2 167.2Bankfull Width (ft)110.0 13.4 13.2 13.3Floodprone Width (ft)1>49.8 >50.1 >50.1 >50.1Bankfull Mean Depth (ft) 0.8 0.6 0.6 --Bankfull Max Depth (ft)21.41.21.10.9Low Bank Elevation -- -- -- 167.0Bankfull Cross Sectional Area (ft2)28.28.28.25.9Bankfull Width/Depth Ratio 12.3 22.0 21.1 --Bankfull Entrenchment Ratio1>5.0 >3.7 >3.8 >3.8Bankfull Bank Height Ratio11.00.90.80.8Cross Section 16 (Shallow)
Upstream Downstream1641651661671681691700 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach B Cross Section 17 - PoolBaselineMY1MY2MY3Approx. BankfullLow Bank HeightBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1166.7 166.9 166.9 167.0Bankfull Width (ft)110.7 13.1 12.0 11.9Floodprone Width (ft)1>49.7 >50.0 >50.0 >50.0Bankfull Mean Depth (ft) 1.2 1.0 1.0 --Bankfull Max Depth (ft)22.2 2.2 2.2 2.1Low Bank Elevation -- -- -- 166.9Bankfull Cross Sectional Area (ft2)212.6 12.6 12.6 11.7Bankfull Width/Depth Ratio 9.0 13.7 21.1 --Bankfull Entrenchment Ratio1N/A N/A N/A N/ABankfull Bank Height Ratio1N/A N/A N/A N/ACross Section 17 (Pool)
Upstream Downstream1631641651661671681690 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach B Cross Section 18 - ShallowBaselineMY1MY2MY3Approx. BankfullLow Bank HeightFloodprone AreaBaseMY1MY2MY3MY5MY7MY+Bankfull Elevation (ft) - Based on AB-XSA1164.9 165.1 165.1 165.1Bankfull Width (ft)110.6 12.4 11.3 15.4Floodprone Width (ft)1>56 >56.4 >56.4 >57.5Bankfull Mean Depth (ft) 0.9 0.8 0.8 --Bankfull Max Depth (ft)21.5 1.7 1.7 1.8Low Bank Elevation -- -- -- 165.1Bankfull Cross Sectional Area (ft2)29.4 9.4 9.4 8.8Bankfull Width/Depth Ratio 11.8 16.4 14.2 --Bankfull Entrenchment Ratio1>5.3 >4.5 >4.9 >3.7Bankfull Bank Height Ratio11.0 1.0 1.0 1.0Cross Section 18 (Shallow)
Upstream Downstream1611621631641651661670 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach B Cross Section 19 - PoolBaselineMY1MY2MY3Approx. BankfullLow Bank HeightBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1164.9 164.8 164.7 164.5Bankfull Width (ft)111.1 9.8 9.6 9.4Floodprone Width (ft)1>61.1 >61.1 >61.1 >61.1Bankfull Mean Depth (ft) 1.2 1.4 1.4 --Bankfull Max Depth (ft)22.6 3.4 3.1 3.5Low Bank Elevation -- -- -- 165.0Bankfull Cross Sectional Area (ft2)213.5 13.5 13.5 18.3Bankfull Width/Depth Ratio 9.1 7.1 6.8 --Bankfull Entrenchment Ratio1N/A N/A N/A N/ABankfull Bank Height Ratio1N/A N/A N/A N/ACross Section 19 (Pool)
Upstream Downstream1611621631641651661670 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach B Cross Section 20 - PoolBaselineMY1MY2MY3Approx. BankfullLow Bank HeightBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1163.7 163.7 163.8 163.8Bankfull Width (ft)17.4 8.1 8.8 8.2Floodprone Width (ft)1>50.1 >50.1 >50.1 >50.1Bankfull Mean Depth (ft) 0.9 0.8 0.8 --Bankfull Max Depth (ft)21.5 1.7 1.8 1.9Low Bank Elevation -- -- -- 163.9Bankfull Cross Sectional Area (ft2)26.7 6.7 6.7 7.8Bankfull Width/Depth Ratio 8.2 9.9 11.6 --Bankfull Entrenchment Ratio1N/A N/A N/A N/ABankfull Bank Height Ratio1N/A N/A N/A N/ACross Section 20 (Pool)
Upstream Downstream1621631641651661671680 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach B Cross Section 21 - ShallowBaselineMY1MY2MY3Approx. BankfullLow Bank HeightFloodprone AreaBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1163.9 163.9 163.9 164.0Bankfull Width (ft)110.1 11.0 10.6 10.8Floodprone Width (ft)1>50.3 >50.2 >50.2 >50.2Bankfull Mean Depth (ft) 0.7 0.6 0.6 --Bankfull Max Depth (ft)21.0 1.0 0.9 1.1Low Bank Elevation -- -- -- 164.1Bankfull Cross Sectional Area (ft2)26.6 6.6 6.6 8.7Bankfull Width/Depth Ratio 15.4 18.3 17.0 --Bankfull Entrenchment Ratio1>5.0 >4.6 >4.7 >4.7Bankfull Bank Height Ratio11.0 0.8 1.2 1.2Cross Section 21 (Shallow)
Upstream Downstream1601611621631641651660 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach B Cross Section 22 - ShallowBaselineMY1MY2MY3Approx. BankfullLow Bank HeightFloodprone AreaBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1162.6 162.7 162.7 162.8Bankfull Width (ft)111.7 14.6 13.7 11.0Floodprone Width (ft)1>50.4 >50.2 >50.2 >50.2Bankfull Mean Depth (ft) 0.8 0.7 0.7 --Bankfull Max Depth (ft)21.3 1.2 1.3 1.1Low Bank Elevation -- -- -- 162.6Bankfull Cross Sectional Area (ft2)29.7 9.7 9.7 8.0Bankfull Width/Depth Ratio 14.1 22.1 19.3 --Bankfull Entrenchment Ratio1>4.3 >3.4 >3.7 >4.6Bankfull Bank Height Ratio11.0 0.9 0.9 0.9Cross Section 22 (Shallow)
Upstream Downstream1591601611621631641650 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach B Cross Section 23 - PoolBaselineMY1MY2MY3Approx. BankfullLow Bank HeightBaseMY1MY2MY3MY5MY7MY+Bankfull Elevation (ft) - Based on AB-XSA1162.0 162.1 162.1 162.1Bankfull Width (ft)111.0 12.4 11.3 11.9Floodprone Width (ft)1>48 >50.3 >50.3 >50.3Bankfull Mean Depth (ft) 1.1 1.0 1.1 --Bankfull Max Depth (ft)22.0 2.4 2.2 2.2Low Bank Elevation -- -- -- 162.1Bankfull Cross Sectional Area (ft2)212.5 12.5 12.5 12.3Bankfull Width/Depth Ratio 9.8 12.4 10.2 --Bankfull Entrenchment Ratio1N/A N/A N/A N/ABankfull Bank Height Ratio1N/A N/A N/A N/ACross Section 23 (Pool)
Upstream Downstream1561571581591601611620 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach B Cross Section 24 - PoolBaselineMY1MY2MY3Approx. BankfullLow Bank HeightBaseMY1MY2MY3MY5MY7MY+Bankfull Elevation (ft) - Based on AB-XSA1158.4 158.5 158.5 158.6Bankfull Width (ft)111.3 12.8 13.4 13.0Floodprone Width (ft)1>44.4 >44.4 >44.4 >44.4Bankfull Mean Depth (ft) 1.0 0.8 0.8 --Bankfull Max Depth (ft)21.7 1.8 1.8 1.8Low Bank Elevation -- -- -- 158.5Bankfull Cross Sectional Area (ft2)210.7 10.7 10.7 9.4Bankfull Width/Depth Ratio 11.8 15.4 16.7 --Bankfull Entrenchment Ratio1N/A N/A N/A N/ABankfull Bank Height Ratio1N/A N/A N/A N/ACross Section 24 (Pool)
Upstream Downstream1561571581591601611620 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach B Cross Section 25 - ShallowBaselineMY1MY2MY3Approx. BankfullLow Bank HeightFloodprone AreaBaseMY1MY2MY3MY5MY7MY+Bankfull Elevation (ft) - Based on AB-XSA1158.4 158.4 158.4 158.5Bankfull Width (ft)110.3 10.3 10.5 10.4Floodprone Width (ft)1>50 >50.1 >50.1 >50.2Bankfull Mean Depth (ft) 0.7 0.7 0.7 --Bankfull Max Depth (ft)21.3 1.2 1.3 0.3Low Bank Elevation -- -- -- 158.5Bankfull Cross Sectional Area (ft2)27.0 7.0 7.0 7.4Bankfull Width/Depth Ratio 15.1 15.3 15.8 --Bankfull Entrenchment Ratio1>4.8 >4.8 >4.8 >4.8Bankfull Bank Height Ratio11.0 1.0 1.0 1.0Cross Section 25 (Shallow)
Upstream Downstream1551561571581591601610 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach B Cross Section 26 - ShallowBaselineMY1MY2MY3Approx. BankfullLow Bank HeightFloodprone AreaBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1157.8 157.8 157.9 157.9Bankfull Width (ft)19.2 10.0 10.5 10.8Floodprone Width (ft)1>50.3 >50.3 >50.3 >50.2Bankfull Mean Depth (ft) 0.8 0.7 0.7 --Bankfull Max Depth (ft)21.3 1.3 1.3 1.3Low Bank Elevation -- -- -- 157.9Bankfull Cross Sectional Area (ft2)27.1 7.1 7.1 7.0Bankfull Width/Depth Ratio 11.9 14.0 15.5 --Bankfull Entrenchment Ratio1>5.5 >5.0 >4.8 >4.7Bankfull Bank Height Ratio11.0 1.0 0.9 1.0Cross Section 26 (Shallow)
Upstream Downstream1661671681691701711720 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach C Cross Section 27 - Run (HWV)BaselineMY1MY2MY3Approx. BankfullLow Bank HeightBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1Bankfull Width (ft)1Floodprone Width (ft)1Bankfull Mean Depth (ft)Bankfull Max Depth (ft)2Low Bank ElevationBankfull Cross Sectional Area (ft2)2Bankfull Width/Depth RatioBankfull Entrenchment Ratio1Bankfull Bank Height Ratio1(Headwater Valley Restoration)No Morphological Parameters were determined for HWV Reach CCross Section 27 (HWV)
Upstream Downstream1611621631641651661670 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48Elevation (ft)Distance (ft)Selma Mill Reach C Cross Section 28 - Run (HWV)BaselineMY1MY2MY3Approx. BankfullLow Bank HeightBase MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1Bankfull Width (ft)1Floodprone Width (ft)1Bankfull Mean Depth (ft)Bankfull Max Depth (ft)2Low Bank ElevationBankfull Cross Sectional Area (ft2)2Bankfull Width/Depth RatioBankfull Entrenchment Ratio1Bankfull Bank Height Ratio1(Headwater Valley Restoration)No Morphological Parameters were determined for HWV Reach CCross Section 28 (HWV)
Parameter Gauge2Dimension and Substrate - Shallow OnlyLL UL Eq. Min Mean Med Max SD5n Min Mean Med Max SD5n Min Med Max Min Mean Med Max SD5nBankfull Width (ft)--- --- ---267.0---425.0 583.0 --- 2 --- --- 10.9 --- --- --- --- 13.0 --- 12.1 13.2 13.3 13.9 0.6 6Floodprone Width (ft)32.0---36.0 40.0 --- 2 --- --- 50.0 --- --- --- --- >50 --- 50.0 50.6 50.2 52.8 1.1 6Bankfull Mean Depth (ft)--- --- ---1.6---2.0 2.4 --- 2 --- --- 1.0 --- --- --- --- 1.3 --- 0.8 1.0 1.0 1.2 0.2 61Bankfull Max Depth (ft)2.5---3.0 3.5 --- 2 --- --- 1.7 --- --- --- --- 1.7 --- 1.4 1.7 1.7 2.1 0.3 6Bankfull Cross Sectional Area (ft2)--- --- ---20.2---28.5 36.8 --- 2 --- --- 11.0 --- --- --- --- 16.5 --- 10.5 13.2 13.0 16.3 2.4 6Width/Depth Ratio6.4---7.0 7.6 --- 2 --- --- 11.9 --- --- --- --- 10.2 --- 11.4 13.5 13.6 16.5 1.8 6Entrenchment Ratio2.1------ >2.2 --- 2 --- --- >2.2 --- --- --- --- >2.2 --- 3.6 3.8 3.8 4.1 0.2 61Bank Height Ratio--- --- --- --- --- --- --- --- --- ------ --- --------- 1.0 1.0 1.0 1.0 0.0 6ProfileShallow Length (ft)--- --- --- --- --- --- 4 --- 11.5 19.9 --- --- 13 30.5 48 4.0 22.2 15.3 71.1 16.143Shallow Slope (ft/ft)--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- -0.02151 0.00759 0.00652 0.05285 0.01491 43Pool Length (ft)--- --- --- --- --- --- 6.9 --- 17.1 21.6 --- --- 13 21 29 8.8 26.8 26.7 55.8 11.343Pool Max depth (ft)--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- 2.1 2.6 2.6 4.0 0.4 43Pool Spacing (ft)--- --- --- --- --- --- 40.3 --- 63.1 109.8 --- --- 48 103.5 159 27.6 80.6 60.1 170.2 37.8 42PatternChannel Beltwidth (ft)--- --- --- --- --- --- 41.2 --- 42.3 43.5 --- --- 46 52 58 46 --- 52 58 --- ---Radius of Curvature (ft)--- --- --- --- --- --- 13.1 --- 18.4 24.6 --- --- 27 36.5 46 27 --- 36.5 46 --- ---Rc:Bankfull width (ft/ft)--- --- --- --- --- --- --- --- --- --- --------- --- --- --- --- --- ------ ---Meander Wavelength (ft)--- --- --- --- --- --- 49.4 --- 50.7 64.9 --- --- 89 120.5 152 89 --- 120.5 152 --- ---Meander Width Ratio--- --- --- --- --- --- 3.8 3.9 4 --- --- 3.5 4 4.5 3.5 --- 4 4.5 --- ---Transport parametersReach Shear Stress (competency) lb/f2Max part size (mm) mobilized at bankfullStream Power (transport capacity) W/m2Additional Reach ParametersRosgen ClassificationBankfull Velocity (fps)--- --- ---Bankfull Discharge (cfs)--- --- ---Valley length (ft)Channel Thalweg length (ft)Sinuosity (ft)Water Surface Slope (Channel) (ft/ft)Channel slope (ft/ft)3Bankfull Floodplain Area (acres)4% of Reach with Eroding BanksChannel Stability or Habitat MetricBiological or OtherShaded cells indicate that these will typically not be filled in.* = Reach was split into 2 segments for the purpose of pre-existing data collection.1 = The distributions for these parameters can include information from both the cross-section measurements and the longitudinal profile. 2 = For projects with a proximal USGS gauge in-line with the project reach (added bankfull verification - rare). 3. Utilizing XS measurement data produce an estimate of the bankfull floodplain area in acres, which should be the area from the top of bank to the toe of the terrace riser/slope. 4 = Proportion of reach exhibiting banks that are eroding based on the visual survey for comparison to monitoring data; 5. Of value/needed only if the n exceeds 3 Table 8. Baseline Stream Data Summary Selma Mill Mitigation Site - Reach A: 3,324 feetRegional Curve Pre-Existing Condition* Reference Reach(es) Data Design Monitoring Baseline------ --------- --------- ---G5c/B5 / B5 E5 E5 E5------------271146 / 1584 375334234191137 / 1545 285 2674--- 0.0023 --- ---1.01 / 1.03 1.32 1.25 1.25--- ---------0.0004 / 0.0021 0.00250.0020.0022--- ------ ------ ---
Parameter Gauge2Dimension and Substrate - Shallow OnlyLL UL Eq. Min Mean Med Max SD5n Min Mean Med Max SD5n Min Med Max Min Mean Med Max SD5nBankfull Width (ft)--- --- ---7.3 8.6 9.2 9.4 1.2 3 --- --- 10.9 --- --- --- --- 10.0 --- 9.2 10.3 10.3 11.7 0.87.0Floodprone Width (ft)8.0 11.7 13.2 14.0 3.3 3 --- --- 50.0 --- --- --- --- >50 --- 49.8 51.0 50.3 56.02.2 7.0Bankfull Mean Depth (ft)--- --- ---0.9 1.1 1.2 1.2 0.2 3 --- --- 1.0 --- --- --- --- 0.9 --- 0.7 0.8 0.8 0.9 0.1 7.01Bankfull Max Depth (ft)1.1 1.5 1.7 1.8 0.4 3 --- --- 1.7 --- --- --- --- 1.3 --- 1.0 1.3 1.3 1.6 0.2 7.0Bankfull Cross Sectional Area (ft2)--- --- ---8.7 9.6 8.7 11.4 1.6 3 --- --- 11.0 --- --- --- --- 9.4 --- 6.6 8.1 8.2 9.7 1.2 7.0Width/Depth Ratio6.2 8.0 7.8 9.9 1.9 3 --- --- 11.9 --- --- --- --- 10.7 --- 11.8 13.4 12.9 15.4 1.5 7.0Entrenchment Ratio1.1 1.3 1.4 1.5 0.2 3 --- --- >2.2 --- --- --- --- >2.2 --- 4.3 5.0 5.0 5.5 0.4 7.01Bank Height Ratio--- --- --- --- --- --- --- --- --- ------ --- --------- 1.0 1.0 1.0 1.0 0.0 7.0ProfileShallow Length (ft)--- --- --- --- --- --- 4 --- 11.5 19.9 --- --- 8 18.5 29 4.0 15.8 14.7 41.1 9.9 50Shallow Slope (ft/ft)--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- -0.01354 0.00909 0.00443 0.04809 0.01066 50Pool Length (ft)--- --- --- --- --- --- 6.9 --- 17.1 21.6 --- --- 5 14.5 24 4.7 17.5 15.7 35.6 6.343Pool Max depth (ft)--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- 0.6 1.7 1.8 2.8 0.7 40Pool Spacing (ft)--- --- --- --- --- --- 40.3 --- 63.1 109.8 --- --- 43 91 139 14.4 60.7 51.8 119.1 26.7 42PatternChannel Beltwidth (ft)--- --- --- --- --- --- 41.2 --- 42.3 43.5 --- --- 26 36.5 47 26 --- 36.5 47 --- ---Radius of Curvature (ft)--- --- --- --- --- --- 13.1 --- 18.4 24.6 --- --- 19 27.5 36 19 --- 27.5 36 --- ---Rc:Bankfull width (ft/ft)--- --- --- --- --- --- --- --- --- --- --------- --- --- --- --- --- --- --- ---Meander Wavelength (ft)--- --- --- --- --- --- 49.4 --- 50.7 64.9 --- --- 70 90.5 111 70 --- 90.5 111 ------Meander Width Ratio--- --- --- --- --- --- 3.8 3.9 4 --- --- 2.6 3.7 4.7 2.6 --- 3.65 4.7 --- ---Transport parametersReach Shear Stress (competency) lb/f2Max part size (mm) mobilized at bankfullStream Power (transport capacity) W/m2Additional Reach ParametersRosgen ClassificationBankfull Velocity (fps)--- --- ---Bankfull Discharge (cfs)--- --- ---Valley length (ft)Channel Thalweg length (ft)Sinuosity (ft)Water Surface Slope (Channel) (ft/ft)Channel slope (ft/ft)3Bankfull Floodplain Area (acres)4% of Reach with Eroding BanksChannel Stability or Habitat MetricBiological or OtherShaded cells indicate that these will typically not be filled in.** = Reach was split into 3 segments for the purpose of pre-existing data collection.1 = The distributions for these parameters can include information from both the cross-section measurements and the longitudinal profile. 2 = For projects with a proximal USGS gauge in-line with the project reach (added bankfull verification - rare). 3. Utilizing XS measurement data produce an estimate of the bankfull floodplain area in acres, which should be the area from the top of bank to the toe of the terrace riser/slope. 4 = Proportion of reach exhibiting banks that are eroding based on the visual survey for comparison to monitoring data; 5. Of value/needed only if the n exceeds 3 --- ------ ------ ------ ------------ ---0.0036 / 0.0030 / 0.003 0.00250.0030.0045--- 0.00231414 / 382 / 405 375261926951.02 / 1.09 / 1.03 1.32 1.19 1.191392 / 352 / 394 285 2204E5 E5---15--------------- ---G5---E5--- --------- ---Table 8. Baseline Stream Data Summary Selma Mill Mitigation Site - Reach B: 2,572 feetRegional Curve Pre-Existing Condition** Reference Reach(es) Data Design Monitoring Baseline
Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1161.8 161.8 162.0 162.0 161.7 161.5 161.4 161.3 160.1 160.2 160.5 160.4 160.0 160.1 160.2 160.2 158.8 158.7 158.8 158.9Bankfull Width (ft)113.2 13.1 13.7 21.5 14.3 12.7 11.5 11.4 12.1 17.1 9.3 11.3 13.2 20.9 19.9 29.612.0 11.7 12.2 13.3Floodprone Width (ft)1>50.2 >50.2 >50.2 >50.1 >50.1 >50.0 >50.0 >50 >50 >50.0 >50 >50.1 >49.8 >49.9 >49.9 >49.9 >50 >50.3 >50.3 >50.3Bankfull Mean Depth (ft) 1.0 1.0 1.0 -- 1.5 1.7 1.9 -- 0.9 0.6 1.1 -- 1.4 0.90.9 -- 1.3 1.3 1.3 --Bankfull Max Depth (ft)21.8 1.8 1.9 0.9 2.9 3.2 3.1 3.6 1.4 1.4 1.7 1.3 2.8 2.9 2.7 2.8 2.1 2.0 2.1 1.6Low Bank Elevation -- -- -- 161.0 -- -- -- 161.8 -- -- -- 160.0 -- -- -- 160.1 -- -- -- 158.6Bankfull Cross Sectional Area (ft2)213.1 13.1 13.1 2.5 21.5 21.5 21.5 27.2 10.6 10.6 10.6 6.6 18.2 18.2 18.2 16.1 15.3 15.3 15.3 12.3Bankfull Width/Depth Ratio 13.3 13.2 14.4 -- 9.5 7.5 7.1 -- 13.8 27.7 8.1 -- 9.6 24.0 21.7 -- 9.4 8.9 9.7 --Bankfull Entrenchment Ratio1>3.8 >3.8 >3.7 >2.3 N/A N/A N/A N/A >4.1 >2.9 >5.4 >4.4 N/A N/A N/A N/A N/A N/A N/A N/ABankfull Bank Height Ratio11.0 1.0 1.0 0.5 N/A N/A N/A N/A 1.0 0.9 0.8 0.7 N/A N/A N/A N/A N/A N/A N/A N/Ad50 (mm)Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1158.7 158.8 158.8 158.8 158.2 158.3 158.5 158.5 158.1 158.2 158.2 158.1 157.2 157.3 157.3 157.3 156.7 156.7 156.7 156.7Bankfull Width (ft)113.4 12.7 12.4 13.2 13.2 13.6 14.5 14.1 11.3 12.2 11.7 11.3 13.9 18.9 14.2 17.8 13.4 13.4 13.3 13.3Floodprone Width (ft)1>50.2 >50.1 >50.1 >50.0 >52.8 >52.9 >52.9 >52.8 >48.1 >48.2 >48.2 >48.5 >50.1 >50.1 >50.1 >50.1 >50.6 >55.2 >55.2 >55.2Bankfull Mean Depth (ft) 1.0 1.0 1.0 -- 0.8 0.8 0.7 -- 1.5 1.4 1.4 -- 1.2 0.91.1 -- 1.2 1.2 1.3 --Bankfull Max Depth (ft)21.6 1.7 1.7 1.7 1.4 1.4 1.3 1.3 2.5 2.9 2.6 2.6 2.0 1.9 1.9 1.7 2.4 2.5 2.4 3.0Low Bank Elevation -- -- -- 158.8 -- -- -- 158.4 -- -- -- 158.1 -- -- -- 157.2 -- -- -- 157.2Bankfull Cross Sectional Area (ft2)212.8 12.8 12.8 12.5 10.5 10.5 10.5 8.9 16.5 16.5 16.5 16.1 16.3 16.3 16.3 14.016.7 16.7 16.7 23.3Bankfull Width/Depth Ratio 14.0 12.6 12.0 -- 16.5 17.6 19.6 -- 7.7 9.0 8.3-- 11.8 22.0 12.5 -- 10.8 10.7 10.6 --Bankfull Entrenchment Ratio1>3.8 >3.9 >4.0 >3.8 >4.0 >3.9 >3.6 >1.3 N/A N/A N/A N/A >3.6 >2.6 >3.5 >2.8 N/AN/A N/A N/ABankfull Bank Height Ratio11.0 1.0 1.0 1.0 1.0 1.0 0.9 0.9 N/A N/A N/A N/A 1.0 1.0 0.9 0.9 N/A N/A N/A N/Ad50 (mm)Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7MY+Bankfull Elevation (ft) - Based on AB-XSA1155.6 155.6 155.8 155.7 155.9 155.9 156.2 156.1 155.4 155.5 155.3 155.1Bankfull Width (ft)113.0 14.2 15.4 14.0 13.3 13.9 13.7 14.0 13.4 14.0 13.6 14.9Floodprone Width (ft)1>50.1 >50.1 >50.1 >50 >50.1 >50.1 >50 >50 >50.0 >50.0 >50Bankfull Mean Depth (ft) 1.2 1.1 1.0 -- 1.2 1.1 1.1 -- 1.5 1.4 1.4 --Bankfull Max Depth (ft)22.2 2.2 2.2 2.3 2.1 2.1 2.0 2.0 2.7 2.8 2.7 2.7Low Bank Elevation -- -- -- 155.5 -- -- -- 155.9 -- -- -- 155.3Bankfull Cross Sectional Area (ft2)215.7 15.7 15.7 13.4 15.6 15.6 15.6 13.8 19.7 19.7 19.7 18.3Bankfull Width/Depth Ratio 10.8 12.8 15.0 -- 11.4 12.4 12.1 -- 9.2 9.9 9.4--Bankfull Entrenchment Ratio1N/A N/A N/A N/A >3.7 >3.6 >3.6 >3.6 N/A N/A N/A N/ABankfull Bank Height Ratio1N/A N/A N/A N/A 1.0 1.0 0.9 0.9 N/A N/A N/A N/Ad50 (mm)Note: Starting in MY3, the parameters denoted with 1 were calculated using the as-built cross sectional area as the basis for adjusting the bankfull elevation and the parameters denoted with 2 were calculated using the ucrrent year low top of bank as the bankfull.Cross Section 9 (Shallow) Cross Section 10 (Pool)Table 9. Cross Section Morphology Data TableSelma Mill - Reach A (3,324 feet)Cross Section 1 (Shallow) Cross Section 2 (Pool) Cross Section 3 (Shallow) Cross Section 4 (Pool) Cross Section 5 (Pool)Cross Section 11 (Pool) Cross Section 12 (Shallow) Cross Section 13 (Pool)Cross Section 6 (Shallow) Cross Section 7 (Shallow) Cross Section 8 (Pool)
Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1167.9 167.9 168.1 168.0 167.8 167.8 167.8 167.9 166.9 167.1 167.2 167.2 166.7 166.9 166.9 167.0 164.9 165.1 165.1 165.1Bankfull Width (ft)112.2 17.5 10.3 17.7 10.5 15.9 20.0 10.1 10.0 13.4 13.2 13.3 10.7 13.1 12.0 11.9 10.6 12.4 11.3 15.4Floodprone Width (ft)1>42.7 >43.4 >43.4 >43.4 >50.4 >50.4 >50.4 >50.3 >49.8 >50.1 >50.1 >50.1 >49.7 >50.0 >50.0 >50.0 >56 >56.4 >56.4 >57.5Bankfull Mean Depth (ft) 1.1 0.7 1.3 -- 0.8 0.5 0.4 -- 0.8 0.6 0.6 -- 1.2 1.01.0 -- 0.9 0.8 0.8 --Bankfull Max Depth (ft)22.0 1.9 2.0 1.7 1.6 1.4 1.4 1.3 1.4 1.2 1.1 0.9 2.2 2.2 2.2 2.1 1.5 1.7 1.7 1.8Low Bank Elevation -- -- -- 167.8 -- -- -- 167.7 -- -- -- 167.0 -- -- -- 166.9 -- -- -- 165.1Bankfull Cross Sectional Area (ft2)213.0 13.0 13.0 9.0 8.6 8.6 8.6 6.3 8.2 8.2 8.2 5.9 12.6 12.6 12.6 11.7 9.4 9.4 9.4 8.8Bankfull Width/Depth Ratio 11.4 23.7 8.2 -- 12.9 29.4 19.0 -- 12.3 22.0 21.1 -- 9.0 13.7 21.1 -- 11.8 16.4 14.2 --Bankfull Entrenchment Ratio1N/A N/A N/A N/A >4.8 >3.2 >3.9 >5 >5.0 >3.7 >3.8 >3.8 N/A N/A N/A N/A >5.3 >4.5 >4.9 >3.7Bankfull Bank Height Ratio1N/A N/A N/A N/A 1.0 1.0 0.9 0.8 1.0 0.9 0.8 0.8 N/A N/A N/A N/A 1.0 1.0 1.0 1.0d50 (mm)Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1164.9 164.8 164.7 164.5 163.7 163.7 163.8 163.8 163.9 163.9 163.9 164.0 162.6 162.7 162.7 162.8 162.0 162.1 162.1 162.1Bankfull Width (ft)111.1 9.8 9.6 9.4 7.4 8.1 8.8 8.2 10.1 11.0 10.6 10.8 11.7 14.6 13.7 11.0 11.0 12.4 11.3 11.9Floodprone Width (ft)1>61.1 >61.1 >61.1 >61.1 >50.1 >50.1 >50.1 >50.1 >50.3 >50.2 >50.2 >50.2 >50.4 >50.2 >50.2 >50.2 >48 >50.3 >50.3 >50.3Bankfull Mean Depth (ft) 1.2 1.4 1.4 -- 0.9 0.8 0.8 -- 0.7 0.6 0.6 -- 0.8 0.70.7 -- 1.1 1.0 1.1 --Bankfull Max Depth (ft)22.6 3.4 3.1 3.5 1.5 1.7 1.8 1.9 1.0 1.0 0.9 1.1 1.3 1.2 1.3 1.1 2.0 2.4 2.2 2.2Low Bank Elevation -- -- -- 165.0 -- -- -- 163.9 -- -- -- 164.1 -- -- -- 162.6 -- -- -- 162.1Bankfull Cross Sectional Area (ft2)213.5 13.5 13.5 18.3 6.7 6.7 6.7 7.8 6.6 6.6 6.6 8.7 9.7 9.7 9.7 8.0 12.5 12.5 12.5 12.3Bankfull Width/Depth Ratio 9.1 7.1 6.8 -- 8.2 9.9 11.6 -- 15.4 18.3 17.0 --14.1 22.1 19.3 -- 9.8 12.4 10.2 --Bankfull Entrenchment Ratio1N/A N/A N/A N/A N/A N/A N/A N/A >5.0 >4.6 >4.7 >4.7 >4.3 >3.4 >3.7 >4.6 N/A N/A N/A N/ABankfull Bank Height Ratio1N/A N/A N/A N/A N/A N/A N/A N/A 1.0 0.8 1.2 1.2 1.0 0.9 0.9 0.9 N/A N/A N/A N/Ad50 (mm)Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+Bankfull Elevation (ft) - Based on AB-XSA1158.4 158.5 158.5 158.6 158.4 158.4 158.4 158.5 157.8 157.8 157.9 157.9Bankfull Width (ft)111.3 12.8 13.4 13.0 10.3 10.3 10.5 10.4 9.2 10.0 10.5 10.8Floodprone Width (ft)1>44.4 >44.4 >44.4 >44.4 >50 >50.1 >50.1 >50.2 >50.3 >50.3 >50.3 >50.2Bankfull Mean Depth (ft) 1.0 0.8 0.8 -- 0.7 0.7 0.7 -- 0.8 0.7 0.7 --Bankfull Max Depth (ft)21.7 1.8 1.8 1.8 1.3 1.2 1.3 0.3 1.3 1.3 1.3 1.3Low Bank Elevation -- -- -- 158.5 -- -- -- 158.5 -- -- -- 157.9Bankfull Cross Sectional Area (ft2)210.7 10.7 10.7 9.4 7.0 7.0 7.0 7.4 7.1 7.1 7.1 7.0Bankfull Width/Depth Ratio 11.8 15.4 16.7 -- 15.1 15.3 15.8 -- 11.9 14.0 15.5 --Bankfull Entrenchment Ratio1N/A N/A N/A N/A >4.8 >4.8 >4.8 >4.8 >5.5 >5.0 >4.8 >4.7Bankfull Bank Height Ratio1N/A N/A N/A N/A 1.0 1.0 1.0 1.0 1.0 1.0 0.9 1.0d50 (mm)Note: Starting in MY3, the parameters denoted with 1 were calculated using the as-built cross sectional area as the basis for adjusting the bankfull elevation and the parameters denoted with 2 were calculated using the ucrrent year low top of bank as the bankfull.Cross Section 24 (Pool) Cross Section 25 (Shallow) Cross Section 26 (Shallow)(Headwater Valley Restoration)No Morphological Parameters were determined for HWV Reach C(Headwater Valley Restoration)No Morphological Parameters were determined for HWV Reach CCross Section 27 (HWV) Cross Section 28 (HWV)Table 9. Cross Section Morphology Data TableSelma Mill - Reach B (2,572 feet) Reach C (875 Feet)Cross Section 14 (Pool) Cross Section 15 (Shallow) Cross Section 16 (Shallow) Cross Section 17 (Pool) Cross Section 18 (Shallow)Cross Section 21 (Shallow) Cross Section 22 (Shallow) Cross Section 23 (Pool)Cross Section 19 (Pool) Cross Section 20 (Pool)
Appendix E
Hydrology Data
Table 11. 2020 Rainfall Summary

Table 12. Documentation of Significant Flow Events

30
Percent
70
Percent
January 4.24 3.18 4.95 2.39
February 3.66 2.46 4.37 5.82
March 4.57 3.38 5.36 1.24
April 3.24 1.93 3.93 0.62
May 4.16 2.83 4.97 2.33
June 4.14 2.63 5.00 3.89
July 5.14 3.37 6.17 5.74
August 4.58 2.97 5.51 9.19
September 4.54 2.15 5.54 1.62
October 3.16 1.75 3.89 NA
November 2.95 1.81 3.57 NA
December 3.05 1.96 3.67 NA
Total 47.43 30.42 56.93 32.84
Month Average
Normal Limits Selma Station
Precipitation
Year Number of
Bankfull Events Maximum Bankfull Height (ft) Estimated Date of Highest Event
MY1 2018 12
0.90 9/17/2018
MY2 2019 13
2.12 7/12/2019
MY3 2020 15
1.89 7/5/2020
MY1 2018 3
0.35 11/13/2018
MY2 2019 4
1.75 8/14/2019
MY3 2020 14
1.85 7/5/2020
Year
Consecutive
Flow Days Total Flow Days Number of Flow Events
MY1 2018* 38 132 12
MY2 2019 120 162 10
MY3 2020 100 199 10
*MY1 data (April 5 - Nov 29, 2018) was updated to incorporate elevation of downstream riffle to calculate stream flow
Crest Gauge 1 (Reach A)
Crest Gauge 2 (Reach B)
Crest Gauge 3 (Reach C - Headwater Valley Restoration)

Table 13.

Table 14.

Days Hydroperiod (%) Days Hydroperiod (%)
GW1 26 11 131 56 12
GW2 46 20 158 68 8
2020 Max Hydroperiod (Growing Season 18-Mar through 6-Nov, 233 days)
Selma Mill
Well ID Occurrences
Consecutive Cumulative
Year 1
(2018)
Year 2
(2019)
Year 3
(2020)
Year 4
(2021)
Year 5
(2022)
Year 6
(2023)
Year 7
(2024)
GW1 11
GW2 20
Summary of Groundwater Monitoring Results
Selma Mill
Well ID
Hydroperiod (%)