20140704 Ver 1_Year 6 Monitoring Report_2021_20210930

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Erin Davis
Initial Review Completed Date 10/01/2021
Mitigation Project Submittal -9/30/2021
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Katie Webber [e-mail]
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Project Type: r DMS C•' Mitigation Bank
Project Name: Buffalo Branch
County: Johnston
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Mitigation Monitoring Report
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fa t1

BUFFALO BRANCH MITIGATION SITE
YEAR 6 MONITORING REPORT
USACE PROJECT # SAW-2014-02129
JOHNSTON COUNTY,NORTH CAROLINA
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Prepared For:
EBX-Neuse I,LLC
3600 Glenwood Avenue, Suite 100
Raleigh,NC 27612
919-209-1055
Prepared by:
res
Resource Environmental Solutions,LLC
3600 Glenwood Avenue, Suite 100
Raleigh,NC 27612
September 2021

Buffalo Branch Mitigation Site•USGS HUC 03020201
Year 6 Monitoring Report•Johnston County,NC•September 2021
TABLE OF CONTENTS
1 PROJECT GOALS,BACKGROUND AND ATTRIBUTES 1
1.1 Location and Setting 1
1.2 Project Goals and Objectives 1
1.3 Project Structure 2
1.3.1 Restoration Type and Approach 2
1.4 Project History,Mitigation Bank Establishment,Contacts and Attribute Data 4
1.4.1 Project History 4
1.4.2 Project Watersheds 4
2 SUCCESS CRITERIA 5
2.1 Stream Restoration 5
2.1.1 Bankfull Events 5
2.1.2 Longitudinal Profile 5
2.1.3 Cross Sections 5
2.1.4 Digital Photo Stations 5
2.2 Vegetation 5
2.3 Scheduling/Reporting 6
3 MONITORING PLAN 6
3.1 Stream Restoration 6
3.1.1 As-Built Survey 6
3.1.2 Bankfull Events 6
3.1.3 Cross Sections 6
3.1.4 Digital Image Stations 7
3.1.5 Visual Assessment Monitoring 7
3.2 Vegetation 7
4 MAINTENANCE AND CONTINGENCY PLAN 7
4.1 Stream 8
4.2 Vegetation 8
5 MONITORING YEAR 6(MY6) 8
5.1 Monitoring Year 6 Data Collection 8
5.1.1 Morphological State of the Channel 8
5.1.2 Vegetation 9
5.1.3 Photo Documentation 9
5.1.4 Hydrology 9
6 REFERENCES 10

Buffalo Branch Mitigation Site•USGS HUC 03020201
Year 6 Monitoring Report•Johnston County,NC•September 2021
Appendices
Appendix A. General Tables and Figures
Table 1. Project Components and Mitigation Credits
Table 2. Project Activity and Reporting History
Table 3. Project Contacts
Table 4. Project Information
Figure 1. Project Vicinity Map
Figure 2. Current Conditions Plan View
Appendix B. Morphological Summary Data and Plots(MY5)
Table 5.Morphological Parameters Summary Data
Table 6. Dimensional Morphology Summary—Cross-Section Data
Table 7. Stream Problem Areas
Table 8.Vegetation Problem Areas
Current Conditions Photos
Appendix C. Vegetation Data(MY5)
Table 9. Planted Species Summary
Table 10.Vegetation Plot Mitigation Success Summary
Table 11. Stem Count Total and Planted Species(Species by Plot)
Vegetation Plot Photos
Appendix D. Hydrology Data
Table 12. Crest Gauge Data
Table 13. 2021 Rainfall Summary
Stream Flow Hydrographs
ii

Buffalo Branch Mitigation Site•USGS HUC 03020201
Year 6 Monitoring Report•Johnston County,NC September 2021
1 PROJECT GOALS,BACKGROUND AND ATTRIBUTES
1.1 Location and Setting
The Buffalo Branch Stream Mitigation Project(Project) is located in Johnston County approximately
four and a half miles north of Selma, NC. To access the Site from the town of Selma, travel north
approximately 4.9 miles on NC HWY 96,and turn right onto Little Divine Road. Turn left on the first
dirt road(Howard Road)in approximately 0.3 miles.Reach A2 crosses Howard Road 400 feet up from
Little Divine Road.
The Project is located in the Neuse River Basin within Cataloging Unit 03020201 (NCDWQ sub-basin
03-04-06).The project is located within the Neuse River Basin(8-digit USGS HUC 03020201, 14-digit
USGS HUC 03020201180050 (USGS, 2012) and the NCDWQ Cape Fear 03-04-06 sub-basin
(NCDWQ,2002).
1.2 Project Goals and Objectives
The Project provides numerous ecological and water quality benefits within the Neuse River Basin.
While many of these benefits are limited to the project area, others, such as pollutant removal and
improved aquatic and terrestrial habitat, have more far-reaching effects. Expected improvements to
water quality,hydrology,and habitat are outlined below.
Design Goals and Objectives
Benefits Related to Water Quality
Benefit will be achieved through cattle exclusion and direct removal of fecal inputs,filtering of runoff
Nutrient removal through buffer areas,the conversion of active farm fields to forested buffers,and improved
denitrification and nutrient uptake through buffer zones.
Benefit will be achieved through the stabilization of eroding stream banks and reduction of sediment
Sediment removal loss from field areas due to lack of vegetative cover.Channel velocities will also be decreased through
a reduction in slope,therefore decreasing erosive forces.
Increase dissolved oxygen Benefit will be achieved through the construction of instream structures to increase turbulence and
concentration dissolved oxygen concentrations and lower water temperature to increase dissolved oxygen capacity.
Runoff filtration Benefit will be achieved through the restoration of buffer areas that will receive and filter runoff,
thereby reducing nutrients and sediment concentrations reaching water bodies downstream.
Benefits to Flood Attenuation
Water storage Benefit will be achieved through the restoration of buffer areas which will infiltrate more water during
precipitation events than under current site conditions.
Improved groundwater Benefit will be achieved through the increased storage of precipitation in buffer areas,ephemeral
recharge depressions,and reconnection of existing floodplain.Greater storage of water will lead to improved
infiltration and groundwater recharge.
Improved/restored Benefit will be achieved by restoring the stream to a natural meandering pattern with an appropriately
hydrologic connections sized channel,such that the channel's floodplain will be flooded more frequently at flows greater than
the bankfull stage.
Benefits Related to Ecological Processes
Restoration of habitats Benefit will be achieved by restoring riparian buffer habitat to appropriate bottomland hardwood
ecosystem.
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Buffalo Branch Mitigation Site•USGS HUC 03020201
Year 6 Monitoring Report•Johnston County,NC September 2021
Improved substrate and Benefit will be achieved through the construction of instream structures designed to improve bedform
instream cover diversity and to trap detritus.Substrate will become coarser as a result of the stabilization of stream
banks and an overall decrease in the amount of fine materials deposited in the stream.
Addition of large woody Benefit will be achieved through the addition of wood structures as part of the restoration design.
debris Such structures may include log vanes,root wads,and log weirs.
Reduced temperature of Benefit will be achieved through the restoration of canopy tree species to the stream buffer areas.
water due to shading
Restoration of terrestrial Benefit will be achieved through the restoration of riparian buffer bottomland hardwood habitats.
habitat
1.3 Project Structure
The Buffalo Branch project consists of stream restoration and enhancement on tributaries that drain
directly to Buffalo Creek. Priority 2 restoration was used for one tributary,Priority 1 restoration along
a portion of one tributary, Stream Enhancement Level I along two tributaries, Stream Enhancement
Level II along three tributaries. In addition to the stream restoration, the mitigation design preserves
and enhances the hydrology of six existing wetland seeps in the project area. These seeps include two
linear seeps and four hillside seeps. Wetland enhancement measures included planting hardwood frees
and livestock exclusion on 5.08 acres. Wetland preservation included 4.47 acres of riparian wetland
along Reach A3. Benefits include the storage of excess water during flood events, preventing erosion
of stream banks, reducing in-stream sedimentation, and nutrient reductions. No wetland mitigation
credits were generated from the enhancement of these seeps but using the buffer guidance document
format additional stream credit was applied to individual reaches based on the width of the buffer.
Table 1. Buffalo Branch Project Components
As- Credit
Built Base Mitigation Buffer Adjusted
Reach Mitigation Type Stationing
Length LengthSMU Ratio Multiplier SMU
(LF)
Al Restoration 0+78 to 14+35 1357 1357 1357 1:1.0 20% 1628
A2 Enhancement I 14+35 to 21+55 720 720 480 1:1.5 16% 557
A2 Restoration 22+46 to 26+33 387 387 387 1:1.0 11% 430
A3 Enhancement II-Low 26+33 to 45+46 1913 1830 366 1:5.0 0% 366
B 1 Enhancement II 0+00 to 5+34 534 534 214 1:2.5 16% 248
B2 Enhancement I 5+34 to 11+22 588 588 392 1:1.5 6% 416
C Enhancement II 0+17 to 4+01 384 384 154 1:2.5 5% 167
TOTAL 5,883 5,800 3,350 3,812
1.3.1 Restoration Type and Approach
Stream restoration and enhancement efforts along the Project were accomplished through analyses of
geomorphic conditions and watershed characteristics. The design approach applied a combination of
analytical and reference reach-based design methods that meet objectives commensurate with both
ecological and geomorphic improvements. Performed treatment activities ranged from minor bank
grading and planting to re-establishing stable planform and hydraulic geometry. For stream reaches
requiring full restoration, natural design concepts were applied and verified through rigorous
engineering analyses and modeling. The objective of this approach was to design a geomorphically
stable channel that provides habitat improvements and ties into the existing landscape.
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Buffalo Branch Mitigation Site•USGS HUC 03020201
Year 6 Monitoring Report•Johnston County,NC September 2021
The Buffalo Branch Site includes Priority Levels I and II stream restoration and stream Enhancement
Levels I and II. Priority Levels I and II stream restoration incorporated the design of a single-thread
meandering channel,with parameters based on data taken from the reference site,published empirical
relationships,NC Coastal Plain Regional Curves, and hydrologic and hydraulic analyses. 1,744 linear
feet of stream channel was reconstructed. Enhancement Level I was applied to 1,308 linear feet of
channel that required stabilization and bank improvements,and buffer restoration.Enhancement Level
II was applied to an additional 2,748 linear feet of channel that required buffer enhancement and/or
minimal bank and habitat improvements.
The Buffalo Branch Site design approach began with a thorough study of existing conditions,including
onsite streams and ditches,valleys,and watershed.Design parameters,including active channel,habitat
and floodplain features were developed from analyses performed at the reference site.Analytical design
techniques were used to determine the design discharge and to verify the design as a whole.
Engineering analyses were performed concurrently to geomorphic and habitat studies.While the stream
design was verified by simulations of hydrology and fluvial processes, analogs of desirable habitat
features were derived from reference sites and integrated into the project design. Both riparian habitat
features and in-stream structures such as log grade controls,brush toes, log toes, log drops were used
throughout the project to act as grade control and for bank stabilization by dissipating and redirecting
the stream's energy. Bank stability was also enhanced through the installation of cuttings bundles and
live stakes that included native species (e.g. black willow (Salix nigra) and silky dogwood (Corpus
amomum).
Sections of abandoned stream channel have been backfilled to the elevation of the floodplain in areas
adjacent to the new channel with material excavated onsite and by installing channel plugs and flood
plain sills where necessary. The floodplains were planted with native species creating a vegetated
buffer, which will provide numerous water quality and ecological benefits. Stream banks were
stabilized using a combination of grading,erosion control matting,bare-root plantings,native material
revetment techniques (i.e. bioengineering), structure placement, and sod transplants where possible.
The stream and adjacent riparian areas have been protected by a minimum 50-foot permanent
conservation easement.
Reach Al (0+78 to 14+35)-Priority II restoration was performed along Reach Al to address existing
impairments,particularly the straightened, oversized channel and lack of bedform diversity. Priority I
restoration was not possible along this reach due to elevation constraints at the culverts under HWY
96. The design approach included meandering the proposed channel within the natural valley,
constructing a floodplain bench, and backfilling the existing stream. A minimum 100-foot buffer was
established and planted with native riparian vegetation. Woody debris was installed along the bed to
improve in-stream habitat. Livestock were excluded with fencing installed along the easement
boundary.All areas within have been planted with native riparian vegetation.
Reach A2 (14+35 to 21+55) - Enhancement Level I begins just downstream of the confluence of
Reaches Al and C and ends just upstream of Howard Road. Enhancement activities included the
smoothing of irregular banks, installation of grade control structures,and installation of woody debris
structures.
Reach A2 (22+46 to 26+33)- Priority I restoration was implemented along Reach A2 downstream of
Howard Road to address historic straightening and channel enlargement. The existing ditch was
backfilled,and the channel has been relocated to the existing valley.A ford crossing was installed just
downstream of the Howard Road ROW to allow the landowner continued access across the property.
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Buffalo Branch Mitigation Site•USGS HUC 03020201
Year 6 Monitoring Report•Johnston County,NC September 2021
Livestock are excluded with fencing installed along the easement boundary. All areas within the
proposed buffer have been planted with native riparian vegetation
Reach A3 (26+33 to 45+46)-Enhancement Level II(low)was completed on Reach A3. The channel
is stable throughout the conservation easement and provides a variety of aquatic habitats. The riparian
buffer is relatively intact and consists primarily of mature hardwoods. However, there were impaired
areas where the buffer was less than 50 feet wide and cattle had stream access. Minimal grading was
implemented in a few areas where cattle had damaged the channel banks. All non-vegetated areas
within the buffer were planted with native riparian vegetation.
Reach B1 (0+00 to 5+34) - Enhancement Level II was performed on Reach B1 due to the channel's
existing stability and presence of mature trees located along the top of banks. The design approach
focused on improving the riparian buffer and addressing minor erosional areas from cattle impacts.
Reach B2 (5+34 to 11+22)
Enhancement Level I was performed along Reach B2. The design approach on this reach focused on
bank stabilization,improving bedform diversity,and riparian buffer restoration. Stabilization activities
included installing grade control structures, installing log toes and vegetated sills to narrow the low-
flow channel, and installing woody debris structures to improve hydraulic efficiency and aquatic
habitat. All disturbed areas within the proposed buffer have been planted with native riparian
vegetation.
Reach C (0+17 to 4+01)
Enhancement Level II was performed on Reach C due to the channel's current stability and small
drainage area. The design approach on this reach focused on improving the riparian buffer and
performing minimal grading to address erosional areas from cattle impacts. The existing crossing
located at the upper end of the reach was removed and additional bank grading and stabilization were
included in the culvert removal. All areas within the proposed buffer have been planted with native
riparian vegetation.
1.4 Project History,Mitigation Bank Establishment, Contacts and Attribute Data
1.4.1 Project History
The Project was restored by EBX Neuse I,LLC(EBX).Tables 2,3,and 4(Appendix A)provide a time
sequence and information pertaining to the project activities, history, contacts, and baseline
information. EBX-Neuse I, LLC, acting as the Bank Sponsor, established a Conservation Easement
(CE) and will monitor the Site for a minimum of seven years. The Mitigation Plan provides detailed
information regarding bank operation, including long term management and annual monitoring
activities. The Bank Sponsor has conveyed the CE to the long-term land steward, the North Carolina
Wildlife Habitat Foundation(NCWHF).The Bank Sponsor will ensure that the conveyed CE will allow
for the implementation of an initial monitoring phase,which will be developed during the design phase
and conducted by the Bank Sponsor. The conveyed CE will allow for yearly monitoring and, if
necessary, maintenance of the Site during the yearly monitoring phases. These activities will be
conducted in accordance with the terms and conditions of the Neu-Con Wetland and Stream Umbrella
Mitigation Bank made and entered into by EBX-Neuse I,USACE,and NCDWR.
1.4.2 Project Watersheds
The easement totals 31.63 acres and is broken into two sections. The total drainage area at the
downstream limits of the project is 570 acres (0.89 mi2). The land use in the project watershed is
approximately 32 percent cultivated cropland,40 percent evergreen and deciduous forest,eight percent
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Buffalo Branch Mitigation Site•USGS HUC 03020201
Year 6 Monitoring Report•Johnston County,NC September 2021
managed herbaceous cover and pasture,three percent evergreen pine plantation, 16 percent developed,
and one percent open water.
2 SUCCESS CRITERIA
The success criteria for the Buffalo Branch Mitigation Site stream restoration follows accepted and
approved success criteria presented in the USACE Stream Mitigation Guidelines and agency guidance.
Specific success criteria components are presented below.
2.1 Stream Restoration
2.1.1 Bankfull Events
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. Bankfull events will be documented using
crest gauges, auto-logging crest gauges, photographs, and visual assessments for evidence of debris
rack lines.
2.1.2 Longitudinal Profile
Changes that may occur during the monitoring period will be evaluated to determine if they represent
a movement toward a more unstable condition(e.g.down cutting,or bank erosion)or are minor changes
that represent an increase in stability(e.g.settling,vegetative changes,coarsening of bed material,etc.).
Deviation from the design ratios will not necessarily denote failure as it is possible to maintain stability
and not stay within the design geometry. However, if a feature is deemed unstable and potentially
jeopardizes the geomorphic stability of the project(e.g. severe headcut,structure failure)a longitudinal
survey can be performed during that monitoring year,compared to the baseline,and the IRT and Bank
Sponsor will determine if remediation is required.
2.1.3 Cross Sections
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.
2.1.4 Digital Photo Stations
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 series of images over time should indicate successional maturation of riparian
vegetation.
2.2 Vegetation
Specific and measurable success criteria for plant density within the riparian buffers on the site will
follow CVS-EEP Protocol for Recording Vegetation (CVS-EEP, v4.2) Guidance. Ten by ten meter
square plots will be permanently established following completion of the planting phase and at least
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Buffalo Branch Mitigation Site•USGS HUC 03020201
Year 6 Monitoring Report•Johnston County,NC September 2021
two opposing corners will be permanently installed and surveyed for future use. The plant species,
density, survival rates, and the cause of mortality, if identifiable,will be recorded within each plot. A
minimum of 180 days between March 1 and November 30 must separate initial planting and monitoring
of year one. Vegetation plots will be sampled and reported in years 1, 2, 3, 4, 5, and 7. The primary
focus of the vegetative monitoring will be solely on the tree stratum, although shrub and herbaceous
species encountered may also be recorded.
2.3 Scheduling/Reporting
The Bank Sponsor will follow the guidance document published by NC DMS, "Monitoring
Requirements and Performance Standards for Stream and/or Wetland Mitigation" dated November 7,
2011 and the 2003 USACE Stream Mitigation Guidelines. Due to the fact that this project is a private
mitigation bank and not an NC DMS project,monitoring documents will follow DMS guidelines only
to the extent necessary for IRT approval. A monitoring report will be generated by December 31st of
each monitoring year documenting activities of the site, and submitted to the IRT. The monitoring
program will be implemented to document system development and progress toward achieving the
success criteria. The restored stream morphology will be assessed to determine the success of the
mitigation.The monitoring program will be undertaken for seven years or until the final success criteria
are achieved,whichever is longer.
3 MONITORING PLAN
Annual monitoring shall be conducted for stream and vegetation monitoring parameters as noted below
for seven years prior to completion of construction or until success criteria have been met.
3.1 Stream Restoration
3.1.1 As-Built Survey
An as-built survey was conducted in March and April 2016 following construction to document channel
size,condition,and location.A longitudinal profile of each stream reach was surveyed post construction
at the Site as part of the As-built surveys.Measurements included the thalweg,water surface,bankfull,
and top of bank at the head of each feature(e.g.,riffle,pool,etc.)and at the maximum pool depth. The
survey was tied to a permanent benchmark to facilitate comparison of data year to year. Longitudinal
profiles will not be required in monitoring years 1 through 7 unless requested by USACE resulting from
indications of significant bank or bed instability.
3.1.2 Bankfull Events
Three sets of manual and auto-logging crest gauges were installed on the site,one along Reach A,one
along Reach B,and one along Reach C.The auto logging crest gauges were installed within the channel
and will continuously record flow conditions at an hourly interval.Manual crest gauges were installed
on the bank at bankfull elevation. Crest gauges will be checked during each site visit to determine if a
bankfull event has occurred since the last site visit. Crest gauge readings and debris rack lines will be
photographed to document evidence of bankfull events.
3.1.3 Cross Sections
A total of 29 permanent cross sections were installed to monitor channel dimensions and stability. Eight
cross sections were installed along Reach Al and five cross sections were installed along Reach A2.
Five cross sections were installed along the length of Reach B, and three cross sections were installed
along Reach C. Eight cross sections were installed along Reach A3. Cross sections were typically
located at representative riffle and pool sections along each stream reach. Each cross section was
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Buffalo Branch Mitigation Site•USGS HUC 03020201
Year 6 Monitoring Report•Johnston County,NC September 2021
permanently marked with 3/8 rebar pin to establish a monument location at each end. A marker pole
was also installed at both ends of each cross section to allow ease locating during monitoring activities.
Annual monitoring cross section surveys will be performed once a year during Monitoring Years 1,2,
3, 5,and 7.Cross section locations are shown on Current Conditions Plan View Figures(Appendix
B)and will include all breaks in slope including top of bank,bottom of bank,streambed,edge of water,
and thalweg.
3.1.4 Digital Image Stations
Digital photographs will be taken at least once a year to visually document stream and vegetation
conditions.This monitoring practice will continue for seven years following construction and planting.
Permanent photo point locations at cross sections and vegetation plots have been established so that the
same directional view and location may be repeated each monitoring year.Monitoring photographs will
also be used to document any stream and vegetation problematic areas such as erosion,stream and bank
instability,easement encroachment and vegetation damage.
3.1.5 Visual Assessment Monitoring
Visual monitoring of all mitigation areas will be conducted a minimum of twice per monitoring year
by qualified individuals.The visual assessments will include vegetation density,vigor,invasive species,
and easement encroachments. Visual assessments of stream stability will include a complete stream
walk and structure inspection. Digital images will be taken at fixed representative locations to record
each monitoring event as well as any noted problem areas or areas of concern. Results of visual
monitoring will be presented in a plan view exhibit with a brief description of problem areas and digital
images. Photographs will be used to subjectively evaluate channel aggradation or degradation, bank
erosion, success of riparian vegetation, and effectiveness of erosion control measures. Longitudinal
photos should indicate the absence of developing bars within the channel or an excessive increase in
channel depth. Lateral photos should not indicate excessive erosion or continuing degradation of the
banks over time. A series of photos over time should indicate successional maturation of riparian
vegetation.
3.2 Vegetation
Resource Environmental Solutions, LLC permanently installed 25 vegetation monitoring plots for
future vegetation monitoring purposes on March 1, 2016. The locations of each vegetation plot are
depicted on the As-Built drawings and CCPV figures. The vegetation plots were randomly setup
throughout the Bank Site and are 100 square meters in size(10 meter by 10 meter square plots).Baseline
vegetation monitoring was conducted in general accordance to CVS-EEP Protocol for Recording
Vegetation (CVS-EEP,v4.2). Table 9(Appendix C)provides a success summary for each vegetation
monitoring plot.Planted woody vegetation was assessed within each plot to establish a baseline dataset.
Within each vegetation plot,each planted stem was identified for species,"X"and"Y"origin located,
and measured for height. Reference digital photographs were also captured to document baseline
conditions. Species composition, density, growth patterns, damaged stems, and survival ratios will be
measured and reported on an annual basis. Vegetation plot data is reported for each plot as well as an
overall site average.
4 MAINTENANCE AND CONTINGENCY PLAN
All identified problematic areas or areas of concern such as stream bank erosion/instability,
aggradation/degradation,lack of targeted vegetation,and invasive/exotic species which prevent the site
from meeting performance success criteria will be evaluated on a case by case basis. The USACE will
be notified if monitoring or other information indicates that the Bank Site,or a portion of a Bank Site,
7

Buffalo Branch Mitigation Site•USGS HUC 03020201
Year 6 Monitoring Report•Johnston County,NC September 2021
is not progressing as anticipated towards meeting the site-specific performance standards as defined in
the Mitigation Plan.In such an event the USACE will be provided with recommendations for adaptive
management measures, which may include site modifications, design changes, revisions to
maintenance requirements, and revised monitoring requirements. USACE approval will be obtained
prior to conducting any adaptive management activities.
4.1 Stream
Any stream problem areas identified during post construction monitoring activities will be documented
and mapped on the Current Conditions Plan View (CCPV) as part of the annual stream monitoring
report. Stream problem areas or areas of concern may include bank erosion, aggradation/degradation,
structure failure or not performing as designed,beaver dams,cattle encroachment due to fence damage,
etc. If it is determined through IRT correspondence that remedial action is required to repair an area,a
proposed work plan will be submitted for remediation.
4.2 Vegetation
Any vegetation problem areas identified during post construction monitoring activities will be
documented and mapped on the Current Conditions Plan View (CCPV) as part of the annual stream
monitoring report. Vegetation problem areas or areas of concern may include vegetation plot not
meeting success criteria, invasive species abundance, sparse vegetation areas, etc. If it is determined
through IRT correspondence that remedial action is required to repair an area, a proposed work plan
will be submitted for remediation.
5 MONITORING YEAR 6 (MY6)
The Buffalo Branch Mitigation Site Year 6 monitoring activities were completed in September 2021.
Vegetation plot and cross section monitoring was not performed in Year 6.
5.1 Monitoring Year 6 Data Collection
5.1.1 Morphological State of the Channel
Morphological stream data was not collected in MY6. Despite trapping and removing beaver dams in
2020, beaver dams were observed again on Reach Al (Figure 2). As of September 2021, the stream
remained dry behind the beaver dams therefore RES believes the beaver were not active at this time.
RES will remove the beaver dams and trap beavers if activity is witnessed. Appendix B and below
includes MY5 summary data tables,morphological parameters,and stream photographs for reference.
Profile
The baseline profile closely matches the design profiles. The plotted longitudinal profiles can be found
on the As-Built Drawings located in the Baseline Monitoring Report. Morphological summary data
tables are located in Appendix B. Longitudinal profile surveys are not performed during monitoring
Years 1-7 unless requested by the IRT to address a stability concern or repair.
Dimension
Stream dimension data was not collected in Monitoring Year 6. The Monitoring Year 5 cross-sectional
dimensions closely match the baseline cross section parameters.All cross-section plots and data tables
can be found in Appendix B.
8

Buffalo Branch Mitigation Site•USGS HUC 03020201
Year 6 Monitoring Report•Johnston County,NC September 2021
Sediment Transport
Sediment transport data was not collected in Monitoring Year 6. The Monitoring Year 5 conditions
show that shear stress and velocities have been reduced for all restoration reaches. Pre-construction
conditions documented all onsite reaches as sand bed channels and in Year 5,they remain classified as
sand bed channels.Visual assessment shows the channel is transporting sediment as designed and will
continue to be monitored for aggradation and degradation.
5.1.2 Vegetation
Monitoring Year 6 vegetation data collection was not performed.In MY5,all 25 vegetation monitoring
plots are meeting the interim success criteria of 260 stems per acre. The Project's average Monitoring
Year 5 planted stems per acre count is 670 (Table 9). The number of planted stems per acre for the
monitoring plots range from 364 stems to 931 stems. Table 10 provides a more detailed summary of
stem counts and the type of planted species within each vegetation monitoring plot.The average stems
per vegetation plot was 17 planted stems. The average stem height was 11.4 feet.
Pine thinning activities were completed again in July 2021. The pine trees are not negatively affecting
any planted hardwood trees however the IRT requested pine thinning to take place on site. RES will
continue to monitor pine tree growth and will thin as necessary throughout the remainder of the
monitoring period. Additionally,no signs of cattle in the easement were observed and all fencing was
intact in MY6.
5.1.3 Photo Documentation
Permanent photo point locations are established at each cross section,vegetation plots,stream crossing,
and stream structures by RES staff. Any additional problem areas or areas of concern will also be
document with a digital photograph during monitoring activities. Stream photographs are in Appendix
B and Appendix C for vegetation photos.
5.1.4 Hydrology
The site recorded bankfull events on two of the three stream reaches during Year 6 monitoring. Reach
A recorded 14 events and Reach B recorded at least one event. The highest reading on Reach A was
1.66 feet and Reach C was 1.60 feet.
In June 2020, RES moved the auto logging crest gauges upstream on Reach B and Reach C to record
flow days as requested by DWR during the MY4 site visit. RES left the manual crest gauges in their
place to continue detecting bankfull events with cork. The locations of the gauges can be found in
Appendix B. In MY6, Reach B recorded 118 consecutive days of flow and Reach C recorded 102
consecutive days of flow.The Reach B flow gauge is located in a run, so a downstream riffle crest was
not used as a reference to detect flow. Instead, the presence of water at the gauge was recorded as
channel flow. Complete crest,flow,and rainfall data is reported in Appendix D.
9

Buffalo Branch Mitigation Site•USGS HUC 03020201
Year 6 Monitoring Report•Johnston County,NC September 2021
6 REFERENCES
American Society of Civil Engineers(ASCE). 1975. Sedimentation Engineering,Manuals and
Reports on Engineering Practice No. 54,Vito A.Vanoni,ed.,New York.
Environmental Banc&Exchange (2015). Buffalo Branch Mitigation Site Mitigation Plan. Eco
Engineering and WK Dickson&Co.,Inc.
Environmental Banc&Exchange (2015). Buffalo Branch Mitigation Site Baseline Monitoring
Report. Resource Environmental Solutions,LLC.
Gordon,N.D.,T.A.McMahon,and B.L.Finlayson. 1992. Stream Hydrology. John Wiley& Sons
Ltd. West Sussex,England.
Griffith,G. and Omernik,J.,2002. Draft Level III and IV Ecoregions of North Carolina.USAEPA,
USDA-NRCS,and NCDENR.
Harman,W.H. et al. 1999.Bankfull Hydraulic Geometry Relationships for North Carolina Streams.
AWRA Wildland Hydrology Symposium Proceedings. Edited By: D.S. Olsen and J.P.
Potyondy.AWRA Summer Symposium.Bozeman,MT.
NC Department of Environment and Natural Resources. December 2004. Surface Water
Classifications.http://dem.ehnr.state.nc.us/csu/swc.html
NC Department of Environment and Natural Resources. July 2009 Draft.Neuse River Basinwide
Water Quality Plan.
10

Appendix A.
General Tables and Figures

Appendix A. General Tables and Figures
Table 1 Project Components and Mitigation Credits
Table 1. Project Components and Mitigation Credits
Buffalo Branch Mitigation Site
DWR Project# 14-0704
USACE Project# SAW-2014-02129
Mitigation Credits
Nitrogen Phosphorous
Stream Riparian Wetland Non-riparian Wetland Buffer Nutrient Offset Nutrient Offset
Type R RE R RE R RE
Totals 2,058 1,753 NA N/A N/A N/A N/A N/A N/A
Project Components
Restoration-
or- Restoration SMUs with
Project Component-or-Reach As-Built Existing Approach Restoration Footage or Mitigation Buffer
ID Stationing/Location(LF) Footage/Acreage (PI,PIT etc.) Equivalent Acreage Ratio Multiplier
Reach Al 0+78 to 14+35 1,033 PII R 1,357 1 : 1.0 1,628
ReachA2 14+35 to 21+55 720 El RE 720 1 : 1.5 557
Reach A2 22+46 to 26+33 311 PI R 387 1 : 1.0 430
Reach A3 26+33 to 45+46 1,830 Ell-Low RE 1,830 1 : 5.0 366
Reach B1 0+00 to 5+34 534 Ell RE 534 1 :2.5 248
Reach B2 5+34 to 11+22 588 El RE 588 1 : 1.5 416
Reach C 0+17 to 4+01 360 Ell RE 384 1 :2.5 167
Component Summation
Restoration Level Stream Riparian Non-riparian Buffer Upland
(linear feet) Wetland Wetland (square feet) (acres)
Riverine Non-Riverine
Restoration 1,744
Enhancement I 1,308
Enhancement II 918
Enhancement II-Low 1,830
Preservation
BMP Elements
Element Location Purpose/Function Notes
BMP Elements
BR=Bioretention Cell;SF=Sand Filter;SW=Stormwater Wetland;WDP=Wet Detention Pond;DDP=Dry Detention Pond;FS=Filter Strip;S=Grassed
Swale;LS=Level Spreader;NI=Natural Infiltration Area;FB=Forested Buffer

Table 2. Project Activity and Reporting History
Project Activity and Reporting History
Buffalo Branch Mitigation Site
DWR Project#14-0704
USACE Project#SAW-2014-02129
Data Collection Completion or
Activity or Report Complete Delivery
Mitigation Plan NA April 2015
Final Design—Construction Plans April 2015 April 2015
Construction Completed January 2016 January 2016
Site Planting Completed February 2016 February 2016
Baseline Monitoring Document(Year 0 Monitoring—baseline) April 2016 May 2016
Year 1 Monitoring August 2016 September 2016
Year 2 Monitoring Stream: June 2017 September 2017
Vegetation: August 2017
Year 3 Monitoring Stream: July 2018 September 2018
Vegetation: July 2018
Year 4 Monitoring Vegetation: Sept 2019 September 2019
Year 5 Monitoring Stream: June September 2020
Vegetation: Sept 2020
Year 6 Monitoring Sept 2021 Sept 2021
Year 7 Monitoring

Table 3. Project Contacts
Project Contacts Table
Buffalo Branch Mitigation Site
DWR Project#14-0704
USACE Project#SAW-2014-02129
Designer WK Dickson and Co.,Inc.
720 Corporate Center Drive
Raleigh,NC 27607
Frasier Mullen,PE
Construction Contractor KBS Earthworks
5616 Coble Church Road
Julian,NC 27283
Planting Contractor H&J Forestry
Matt Hitch
Seeding Contractor KBS Earthworks
5616 Coble Church Road
Julian,NC 2728
Seed Mix Sources Green Resource
Nursery Stock Suppliers Arbogen,NC Forestry Services Nursery
Bank/Bank Sponsor Neu-Con Wetland and Stream Umbrella Bank
EBX Neuse I,LLC 3600 Glenwood Ave, Suite 100
Raleigh,NC 27612
[phone]
Project Contact: Brad Breslow([e-mail])
Monitoring Performers Resource Environmental Solutions,LLC
3600 Glenwood Ave, Suite 100
Raleigh,NC 27612
[phone]
Project Manager: Ryan Medric([e-mail])
Table 4. Project Information
Project Information
Project Name Buffalo Branch Mitigation Site
County Johnston
Project Area(acres) 31.63
Project Coordinates(latitude and 35.607309°N -78.288312°W
longitude)
Project Watershed Summary Information
Physiographic Province Piedmont
River Basin Neuse
USGS Hydrologic Unit 8-digit 03020201
USGS Hydrologic Unit 12-digit 030202011800
DWQ Sub-basin 03-04-06
Reach Al—475 acres
Reach A2—516 acres
Project Drainage Area(acres) Reach A3—540 acres
Reach B l—10 acres
Reach B2—20 acres
Reach C—21 acres

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- ,�.e >'` .. ± Date: 9/30/2021 Drawn by: RTM
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Appendix B.
Morphological Summary Data and Plots

Appendix B.
Table 5.Buffalo Branch Morphological Parameters Summary Data
Reference Reach Existing' Design As-Built
Al A2 A3 B1 B2 C Al A2 Al A2
Feature Pool I Riffle Riffle Riffle Riffle Riffle Riffle Riffle Riffle I Pool Riffle I Pool Riffle I Pool Riffle I Pool
Drainage Area(ac) 540 475 516 540 10 20 21 475 516 475 516
Drainage Area(mil) 0.84 0.74 0.81 0.84 0.02 0.03 0.03 0.74 0.81 0.74 0.81
NC Regional Curve Discharge(cfs)2 --- 14.7 13.4 14.2 14.7 0.8 1.4 1.4 13.4 14.2 13.4 14.2
NC Regional Curve Discharge(cfs)3 --- 7.7 7.0 7.5 7.7 0.4 0.6 0.7 7.0 7.5 7.0 7.5
Design/Calculated Discharge(cfs) --- 17 --- --- --- --- --- 14 15 14 15
Dimension 1 1
BF Width(ft) 8.5 10.9 9.8 19.3 12.3 11.3 5.4 5.4 9.4 9 9.4 9 10.3 10.4 9.2 8.4
Floodprone Width(ft) 35.6 50 17 34 34 33 10 9 >50 >50 >50 >50 >50 >50 >50 >50
BF Cross Sectional Area(ft2) 11.8 11.0 9.0 15.0 12.8 5.0 2.5 2.8 9.9 11.3 9.9 11.3 8.8 11.2 9.1 9.7
BF Mean Depth(ft) 1.4 1.0 0.9 0.8 1.1 0.4 0.5 0.5 1.1 1.2 1.1 1.2 0.9 1.1 1.0 1.2
BF Max Depth(ft) 2.2 1.7 1.4 1.2 1.7 0.7 0.9 0.9 1.6 2.1 1.6 2.1 1.5 2.1 1.5 1.8
Width/Depth Ratio 6.2 11.9 10.7 24.8 12.3 25.7 11.4 10.5 9.0 7.3 9.0 7.3 12.3 9.7 9.3 7.3
Entrenchment Ratio >2.2 >2.2 1.8 1.7 >2.2 >2.2 1.8 1.7 >2.2 >2.2 >2.2 >2.2 >2.2 >2.2 >2.2 >2.2
Wetted Perimeter(ft) 10.2 11.9 10.2 19.9 13.2 11.5 6.0 5.7 10.2 10.1 10.2 10.1 10.2 10.1 10.0 9.9
Hydraulic Radius(ft) 1.2 0.9 0.9 0.8 1.0 0.4 0.4 0.5 1.0 1.1 1.0 1.1 1.0 1.1 1.0 1.0
Substrate
Sand I Gravel/Sand I Gravel/Sand I Sand I Sand I Sand I Sand I Gravel/Sand I Gravel/Sand I Gravel/Sand I Gravel/Sand
Pattern
Min Max Med --- --- --- --- --- --- Min Max Min Max Min Max Min Max
Channel Beltwidth(ft) 41.2 43.5 42.3 --- --- --- --- --- --- 31 53 31 53 30 54 30 55
Radius of Curvature(ft) 13.1 24.6 18.4 --- --- --- --- --- --- 14 25 14 25 16 26 15 27
Radius of Curvature Ratio 1.2 2.3 1.7 --- --- --- --- --- --- 1.5 2.7 1.5 2.7 1.6 2.5 1.6 2.9
Meander Wavelength(ft) 49.5 64.9 50.7 --- --- --- --- --- --- 58 96 58 96 58 96 58 96
Meander Width Ratio 3.8 4.0 3.9 --- --- --- --- --- --- 3.3 5.6 3.3 5.6 2.9 5.2 3.3 6.0
Profile
Shallow Length(ft) 4.0 19.9 11.5 --- --- --- --- --- --- 4 23 4 23 4 23 4 23
Run Length(ft) 7.8 23.0 13.6 --- --- --- --- --- --- 7 36 7 36 7 36 7 36
Pool Length(ft) 6.9 21.6 17.1 --- --- --- --- --- --- 5 24 5 24 5 24 5 24
Pool-to-Pool Spacing(ft) 40.3 109.8 63.1 --- --- --- --- --- --- 28 99 28 99 28 99 28 99
Additional Reach Parameters _
Valley Length(ft) 285 1005 1002 1521 530 572 350 1012 325 1012 325
Channel Length(ft) 375 1033 1043 1830 534 588 360 1310 392 1357 387
Sinuosity 1.32 1.03 1.04 1.20 1.01 1.03 1.03 1.29 1.21 1.34 1.19
Water Surface Slope(ft/ft) 0.0023 --- --- --- --- --- ---
Channel Slope(ft/ft) 0.025 0.004 0.004 0.0025 0.0088 0.004 0.025 0.0026 0.0025 0.0026 0.0025
Rosgen Classification ES G4c G5c E5 G5c G5c G5c E5 ES E5 ES
1 Bankfull stage was estimated using NC Regional Curve equations and existing conditions data
2NC Regional Curve equations source:Doll et al.(2003)
3NC Regional Curve equations source:Sweet and Geratz(2003)

Appendix B. Table 6a. -Monitoring Data-Dimensional Morphology Summary(Dimensional Parameters-Cross Sections)
Project Name/Number: Buffalo Branch SAW-2014-02129
Cross Section 1(Pool) Cross Section 2(Riffle) Cros&Section 3(Riffle) Cross Section 4(Pool) Cross Section 5(Riffle)
illMY3 based on fixed baseline bankfull cross sectional area* Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+
Bankfull Elevation(ft)-Based on AB-XSA' 200.3 200.3 200.3 200.5 200.4 199.9 199.9 199.9 200.1 200.2 199.4 199.4 199.4 199.6 199.6 199.4 199.4 199.4 199.5 199.6 198.4 198.4 198.4 198.5 198.8
Bankfull Width(ft)' 11.9 9.9 8.4 14.1 8.7 10.4 9.8 8.5 13.4 11.2 9.6 9.2 8.9 13.3 17.4 9.4 9.8 8.9 10.7 11.6 8.6 8.1 8.3 10.1 9.0
Floodprone Width(ft)' 50.0 50.0 50.0 50.1 50.1 50.0 50.0 50.0 50.9 50.8 50.0 50.0 50.0 50.4 50.3 50.0 50.0 50.0 50.4 --- 50.0 50.0 50.0 50.5 51.2
Bankfull Mean Depth(ft) 0.9 1.1 1.1 0.8 --- 0.7 0.7 0.7 0.6 --- 0.9 0.9 0.8 0.7 --- 1.2 1.0 1.1 1.1 --- 0.9 0.8 0.8 0.8 ---
Bankfull Max Depth(ft)2 2.0 2.1 2.0 2.0 2.3 1.3 1.2 1.2 1.4 1.4 1.6 1.5 1.5 1.6 1.5 2.2 2.0 2.1 2.3 1.9 1.5 1.4 1.5 1.5 1.3
Low Bank Elevation - - - - 200.5 - - - - 200.1 - - - - 199.4 - - - - 199.2 - - - - 198.4
Bankfull Cross Sectional Area(ft2)2 11.0 10.7 9.5 11.0 11.9 7.5 6.7 5.8 7.5 6.7 9.0 8.2 7.6 9.0 6.8 11.3 10.2 9.9 11.3 8.0 7.8 6.9 7.0 7.8 4.8
Bankfull Width/Depth Ratio 12.9 9.2 7.5 18.2 --- 14.5 14.3 12.4 23.9 --- 10.3 10.2 10.5 19.6 --- 7.7 9.4 7.9 10.1 --- 9.5 9.6 9.9 13.1
Bankfull Entrenchment Ratio1 >2.2 >2.2 >2.2 NA NA >2.2 >2.2 >2.2 >3.8 >1.4 >2.2 >2.2 >2.2 >3.8 >1.5 >2.2 >2.2 >2.2 NA NA >2.2 >2.2 >2.2 >5 >1.3
Bankfull Bank Height Ratio' 1.0 1.0 1.0 NA NA 1.0 1.0 1.0 1.0 0.9 1.0 1.0 1.0 0.9 0.9 1.0 1.0 1.0 NA NA 1.0 1.0 1.0 1.0 0.8
Cross Section 6(Pool) Cross Section 7(Riffle) 111111 Cross Section 8(Pool) Cross Section 9(Run) • Cross Section 10(Run)
MY3 based on fixed baseline bankfull cross sectional area*
Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+
Bankfull Elevation(ft)-Based on AB-XSA' 198.2 198.2 198.2 198.3 198.4 198.0 198.0 198.0 198.1 198.2 197.8 197.8 197.8 197.8 197.9 196.0 196.0 196.0 195.9 195.7 195.7 195.7 195.7 195.8 195.8
Bankfull Width(ft)' 8.9 8.3 8.4 8.9 9.5 12.7 9.6 9.4 14.6 9.8 11.3 10.1 9.1 16.0 12.7 9.3 10.3 8.7 7.7 7.7 10.8 9.8 12.2 12.7 11.8
Floodprone Width(ft)' 50.0 50.0 50.0 50.6 --- 50.0 50.0 50.0 50.2 50.4 50.0 50.0 50.0 53.4 53.7 25.0 25.0 26.0 24.0 22.4 50.0 50.0 50.0 50.4 48.5
Bankfull Mean Depth(ft) 1.2 1.1 1.1 1.2 --- 0.9 0.9 0.9 0.7 --- 1.0 1.0 1.0 0.7 --- 0.7 0.6 0.8 0.8 --- 0.9 0.8 0.7 0.7 ---
Bankfull Max Depth(ft)2 2.1 2.0 1.9 2.1 2.3 1.7 1.5 1.5 1.6 1.5 2.2 2.2 2.0 2.1 2.1 1.0 1.3 1.3 1.2 2.1 1.5 1.5 1.5 1.6 1.3
Low Bank Elevation - - - - 198.5 - - - - 198.1 - - - - 197.8 - - - - 196.6 - - - - 195.7
Bankfull Cross Sectional Area(ft2)2 10.7 9.5 9.4 10.7 10.9 10.8 8.9 8.8 10.8 9.7 11.8 10.5 9.4 11.8 10.6 6.2 6.6 6.9 6.2 15.2 9.5 8.3 8.3 9.5 8.5
Bankfull Width/Depth Ratio 7.4 7.4 7.6 7.4 --- 14.8 10.5 10.0 19.7 --- 10.9 9.7 8.8 21.8 --- 13.9 16.0 11.0 9.7 --- 12.3 11.6 18.0 17.1 ---
Bankfull Entrenchment Ratio' >2.2 >2.2 >2.2 NA NA >2.2 >2.2 >2.2 >3.4 ,1.5 >2.2 >2.2 >2.2 NA NA >2.2 >2.2 >2.2 3.1 >2.1 >2.2 >2.2 >2.2 >4 >1.3
Bankfull Bank Height Ratio' 1.0 1.0 1.0 NA NA 1.0 1.0 1.0 1.0 0.9 1.0 1.0 1.0 NA NA 1.0 1.0 1.0 1.3 1.8 1.0 1.0 1.0 0.9 0.9
MilirCross Section 11(Run) Cross Section 12(Run)aAMR Cross Section 13(Run) is CrossSection 14(Run/Riffle) illMit Cross Section 15(Run) f
MY3 based on fixed baseline bankfull cross sectional area* Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+
Bankfull Elevation(ft)-Based on AB-XSA' 193.8 193.8 193.8 194.2 194.1 204.8 204.8 204.8 205.0 205.0 202.3 202.3 202.3 202.5 202.6 200.2 200.2 200.2 200.3 200.3 204.9 204.9 204.9 205.0 205.0
Bankfull Width(ft)' 7.1 7.0 7.9 15.6 8.8 11.8 12.6 12.2 12.7 12.5 12.1 12.1 12.1 13.8 13.7 13.0 13.1 12.1 13.7 13.0 14.3 14.5 14.1 14.9 17.1
Floodprone Width 01)' 50.0 50.0 50.0 50.4 50.3 50.0 50.0 50.0 50.4 50.4 50.0 50.0 50.0 50.4 50.4 50.0 50.0 50.0 42.0 50.4 50.0 50.0 50.0 50.4 50.5
Bankfull Mean Depth(ft) 1.7 1.4 1.2 0.8 --- 1.7 1.5 1.6 1.6 --- 1.0 0.8 0.8 1.0 --- 0.9 0.8 0.8 0.8 --- 1.2 1.1 1.2 1.2 ---
Bankfull Max Depth(ft)2 2.2 2.0 2.0 1.8 2.0 2.9 2.6 2.6 2.7 2.7 1.7 1.4 1.5 1.6 1.7 1.7 1.4 1.4 1.5 1.4 2.1 1.8 1.9 2.0 1.7
Low Bank Elevation - - - - 194.0 - - - - 205.0 - - - - 202.6 - - - - 200.2 - - - - 204.8
Bankfull Cross Sectional Area(ft2)2 12.1 9.9 9.5 12.1 10.9 20.3 18.5 19.1 20.3 20.0 11.9 9.5 10.2 11.9 12.4 11.2 10.8 10.2 11.2 9.1 17.8 15.7 16.5 17.8 14.7
Bankfull Width/Depth Ratio 4.2 5.0 6.5 20.2 --- 6.9 8.6 7.8 7.9 --- 12.2 15.5 14.4 16.1 --- 15.1 15.9 14.4 16.9 --- 11.5 13.4 12.1 12.5 ---
Bankfull Entrenchment Ratio' >2.2 >2.2 >2.2 >3.2 >2.0 >2.2 >2.2 >2.2 >4 >2.7 >2.2 >2.2 >2.2 >3.6 >1.7 >2.2 >2.2 >2.2 >3.1 >1.4 >2.2 >2.2 >2.2 >3.4 >1.7
Bankfull Bank Height Ratio' 1.0 1.0 1.0 0.9 0.9 1.0 1.0 1.0 1.1 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.9 1.0 1.0 1.0 1.1 0.9
Cross Section 16(Pool) andi Cross Section 17(Riffle) Cross Section 18(Run) 111111r=(Run)- Cross Section 20(Riffle)
MY3 based on fixed baseline bankfull cross sectional area* Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+
Bankfull Elevation(ft)-Based on AB-XSA' 202.2 202.2 202.2 202.4 202.3 200.5 200.5 200.5 200.6 200.6 199.0 199.0 199.0 199.1 199.1 198.1 198.1 198.1 198.1 198.2 192.8 192.8 192.8 193.0 193.1
Bankfull Width(ft)' 12.5 12.6 11.7 13.0 13.0 14.0 11.8 11.5 17.9 12.7 10.3 10.5 10.0 10.5 10.6 12.2 10.9 11.0 13.6 14.4 9.2 9.1 8.7 9.5 9.0
Floodprone Width(f01 34.3 34.3 34.3 34.2 35.1 50.0 50.0 50.0 45.7 49.3 50.0 42.2 50.0 45.3 48.2 50.0 50.0 50.0 50.1 50.4 50.0 50.0 50.0 50.4 50.4
Bankfull Mean Depth(ft) 0.7 0.5 0.6 0.6 --- 0.7 0.7 0.7 0.5 --- 1.0 0.8 0.9 1.0 --- 0.9 0.8 0.8 0.8 --- 1.0 0.9 0.9 1.0 ---
Bankfull Max Depth(ft)2 1.0 0.8 1.0 0.9 1.0 1.4 1.4 1.4 1.4 1.4 1.5 1.2 1.4 1.5 1.4 1.6 1.3 1.3 1.6 1.5 1.5 1.5 1.5 1.6 1.5
Low Bank Elevation - - - - 202.2 - - - - 200.7 - - - - 199.0 - - - - 198.1 - - - - 192.9
Bankfull Cross Sectional Area(ft2)2 8.2 6.7 6.6 8.2 6.7 9.2 7.7 8.0 9.2 9.7 10.4 8.8 9.0 10.4 9.1 11.3 8.4 8.8 11.3 10.3 9.1 8.2 7.5 9.1 7.1
Bankfull Width/Depth Ratio 19.2 23.6 20.6 20.6 --- 21.1 18.0 16.4 34.6 --- 10.2 12.5 11.2 10.6 --- 13.1 14.0 13.8 16.3 --- 9.3 10.1 10.2 9.9 ---
Bankfull Entrenchment Ratio' >2.2 >2.2 >2.2 NA NA >2.2 >2.2 >2.2 >2.6 >1.4 >2.2 >2.2 >2.2 >4.3 >1.4 >2.2 >2.2 >2.2 >3.7 >1.5 >2.2 >2.2 >2.2 >5.3 >1.5
Bankfull Bank Height Ratio' 1.0 1.0 1.0 NA NA 1.0 1.0 1.0 0.9 1.0 1.0 1.0 1.0 0.9 0.9 1.0 1.0 1.0 1.1 1.0 1.0 1.0 1.0 1.0 0.9
Note:Starting in MY5,the parameters denoted with I 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 current year low top of bank as the bankfull.

Appendix B. Table 6b. -Monitoring Data-Dimensional Morphology Summary(Dimensional Parameters-Cross Sections)
Project Name/Number: Buffalo Branch SAW-2014-02129
Cross Section 21(Pool) Cross Section 22(Riffle) Cross Section 23(Pool)• INIIIIIII Cross Section 24(Riffle) Cross Section 25(Pool) -
MY3 based on fixed baseline bankfull cross sectional area* Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+
Bankfull Elevation(ft)-Based on AB-XSA17 192.4 192.4 192.4 192.7 192.7 192.1 192.1 192.1 192.1 192.1 192.0 192.0 192.0 192.0 192.0 190.1 190.1 190.1 190.1 190.0 190.2 190.2 190.2 190.2 190.3
Bankfull Width(ft)1 8.4 8.2 7.0 16.0 9.4 10.7 9.9 9.8 13.1 17.8 10.4 10.4 11.3 13.6 10.2 8.2 8.7 8.5 10.6 7.3 9.1 9.7 9.1 9.0 9.2
Floodprone Width(ft)1 50.0 50.0 50.0 50.3 --- 50.0 50.0 50.0 50.3 50.3 50.0 50.0 50.0 50.4 --- 50.0 50.0 50.0 40.5 40.4 50.0 50.0 50.0 40.3 ---
Bankfull Mean Depth(ft) 1.2 1.0 1.0 0.6 --- 1.2 1.1 1.1 0.9 --- 1.3 1.2 1.2 1.0 --- 1.2 1.1 1.3 0.9 --- 1.3 1.1 1.3 1.3 ---
Bankfull Max Depth(ft)2 1.8 1.6 1.4 1.7 1.6 1.4 1.3 1.4 1.3 1.5 1.9 1.8 1.9 1.9 1.9 1.7 1.8 2.0 1.8 2.1 1.8 1.7 1.8 1.8 1.8
Low Bank Elevation - - - - 192.6 - - - - 192.3 - - - - 191.9 - - - - 190.2 - - - - 190.3
Bankfull Cross Sectional Area(ft2)2 9.7 8.2 7.0 9.7 8.6 12.4 11.1 11.3 12.4 13.3 13.5 12.3 13.7 13.5 12.5 9.9 9.2 10.6 9.9 11.5 11.7 10.2 11.5 11.7 12.1
Bankfull Width/Depth Ratio 7.3 8.3 7.0 26.5 --- 9.2 8.9 8.5 13.8 --- 8.0 8.8 9.4 13.7 --- 6.8 8.2 6.8 11.3 --- 7.0 9.2 7.2 6.9 ---
Bankfull Entrenchment Ratio' >2.2 >2.2 >2.2 NA NA >2.2 >2.2 >2.2 >3.8 >1.5 >2.2 >2.2 >2.2 NA NA >2.2 >2.2 >2.2 >3.8 >2.1 >2.2 >2.2 >2.2 NA NA
Bankfull Bank Hei t t Ratio' 1.0 1.0 1.0 NA NA 1.0 1.0 1.0 1.1 1.1 1.0 1.0 1.0 NA NA 1.0 1.0 1.0 1.0 1.1 1.0 1.0 1.0 NA NA
Cross Section 26(Riffle) Cross Section 27(Pool) , Cross Section 28(Pool) Cross Section 29(Riffle)
MY3 based on fixed baseline bankfull cross sectional area* Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+
Bankfull Elevation(ft)-Based on AB-XSAr 187.7 187.7 187.7 187.7 187.5 187.8 187.8 187.8 187.9 187.7 185.8 185.8 185.8 185.8 185.7 185.7 185.7 185.7 185.7 185.7
Bankfull Width(ft)1 7.9 8.2 7.8 7.6 6.9 10.8 10.1 9.9 20.5 9.6 8.7 8.6 8.7 8.3 8.2 9.6 9.6 9.3 9.3 8.7
Floodprone Width(ft)1 50.0 50.0 50.0 40.1 40.0 50.0 50.0 50.0 40.2 --- 50.0 50.0 50.0 40.3 --- 50.0 50.0 50.0 40.2 40.3
Bankfull Mean Depth(ft) 1.3 1.1 1.4 1.4 --- 1.3 1.3 1.4 0.7 --- 1.5 1.4 1.6 1.6 --- 1.4 1.2 1.4 1.4 ---
Bankfull Max Depth(ft)2 1.9 1.8 2.0 1.8 2.7 2.1 2.1 2.1 2.1 2.4 2.3 2.1 2.3 2.3 2.5 2.0 2.0 2.2 2.2 2.5
Low Bank Elevation - - - - 188.1 - - - - 187.9 - - - - 186.0 - - - - 185.7
Bankfull Cross Sectional Area(ft2)2 10.4 9.2 10.9 10.4 15.9 14.4 13.5 13.7 14.4 16.2 13.4 12.2 13.8 13.4 15.9 13.2 11.9 12.7 13.2 13.9
Bankfull Width/Depth Ratio 5.9 7.3 5.6 5.6 --- 8.1 7.6 7.2 29.3 --- 5.6 6.0 5.5 5.1 --- 6.9 7.8 6.8 6.6 ---
Bankfull Entrenchment Ratio' >2.2 >2.2 >2.2 >5.2 >2.7 >2.2 >2.2 >2.2 NA NA >2.2 >2.2 >2.2 NA NA >2.2 >2.2 >2.2 >4.3 >2.5
Bankfull Bank Height Ratio' 1.0 1.0 1.0 1.1 1.3 1.0 1.0 1.0 NA NA 1.0 1.0 1.0 NA NA 1.0 1.0 1.0 1.0 1.0
Note:Starting in MY5,the parameters denoted with'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.

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204 -
203
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0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48
Distance(ft)
Baseline MY1 MY2 MY3 MY5 ———Approx.Bankfull Low TOB Floodprone Area

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Buffalo Branch Reach Al Cross Section 2 - Riffle
204 -
203
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0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48
Distance(ft)
Baseline —MY1 MY2 MY3 MY5 ———Approx.Bankfull Low TOB Floodprone Area

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Buffalo Branch Reach Al Cross Section 3 - Riffle
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198
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0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48
Distance(ft)
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Buffalo Branch Reach A1Cross Section 4 - Pool
203 -
202
201
F
c
° 200
co
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199
198
197 ,
0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48
Distance(ft)
Baseline —MY1 MY2 MY3 MY5 ———-Approx.Bankfull Low TOB
Floodprone Area

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Buffalo Branch Reach Al Cross Section 5 - Riffle
202 -
201
200
F
° 199
w 198 ‘i.....
197
196 ,
0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48
Distance(ft)
Baseline -MY1 MY2 MY3 — MY5 ———Approx.Bankfull Low TOB Floodprone Area

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Buffalo Branch Reach Al Cross Section 6 - Pool
202 -
201
200
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° 199
fi
w 198
197
196 ,
0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48
Distance(ft)
Baseline MY1 MY2 MY3 — MY5 ———Approx.Bankfull Low TOB Floodprone Area

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Buffalo Branch Reach Al Cross Section 7 - Riffle
202 -
201
200
F
c
° 199
w 198 ---- ...
197
196 ,
0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48
Distance(ft)
Baseline MY1 MY2 MY3 — MY5 ——-Approx.Bankfull Low TOB Floodprone Area

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Buffalo Branch Reach Al- Cross Section 8 - Pool
201 -
200
199
F
c
° 198
w 197
196
195 ,
0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48
Distance(ft)
Baseline MY1 MY2 MY3 — MY5 ———Approx.Bankfull Low TOB Floodprone Area

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Buffalo Branch Reach A2 Cross Section 9 - Run
200 -
199
198
°• 197
fi
w 196 \ `
195 \N.:v.
194 -
0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48
Distance(ft)
Baseline MY1 MY2 MY3 MY5 ———Approx.Bankfull Low TOB Floodprone Area

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Buffalo Branch Reach A2 Cross Section 10 - Run
200 -
199
198
F
c
° 197
a)
w 196
195
194 ,
0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48
Distance(ft)
Baseline —MY1 — MY2 MY3 MY5 ——-Approx.Bankfull Low TOB Floodprone Area

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Buffalo Branch Reach A2 Cross Section 11 - Run
197 -
196
195
° 194 ��----�.
co
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193 192 /
191 ,
0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48
Distance(ft)
Baseline —MY1 MY2 MY3 — MY5 ———Approx.Bankfull Low TOB Floodprone Area

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Buffalo Branch Reach C Cross Section 12 - Run
208 -
207
206
o
205 �-
cD
w 204
203 V
202 ,
0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48
Distance(ft)
Baseline —MY1 MY2 MY3 — MY5 ———Approx.Bankfull Low TOB Floodprone Area

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Buffalo Branch Reach C Cross Section 13 - Run
206 -
205
204
F
c
° 203
Ci
N
w 202
201
200 ,
0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48
Distance(ft)
Baseline MY1 MY2 MY3 MY5 ———Approx.Bankfull Low TOB Floodprone Area

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Table 7. Stream Problem Areas
Buffalo Branch Mitigation Site
Feature Issue Reach/Station Suspected Cause Status Photo
Beaver Dams Reach A Beavers Pending Removal N/A
Table 8.Vegetation Problem Areas
Buffalo Branch Mitigation Site
Feature Category Reach/Station Suspected Cause Status Photo
Pines Throughout Site Natural In progress N/A
Regeneration

Appendix B.
Buffalo Branch Current Conditions Photos
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Appendix C.
Vegetation Data

Table 9. Planted Species Summary
Species Total
Scientific Name Common Name Type Stems
Planted
Betula nigra River Birch Bare Root 2,300
Fraxinus pennsylvanica Green Ash Bare Root 1,000
Liriodendron tulipifera Tuliptree Bare Root 1,300
Nyssa sylvatica Blackgum Bare Root 2,400
Platanus occidentalis American sycamore Bare Root 3,500
Quercus lyrata Overcup Oak Bare Root 2,000
Quercus michauxii Oa p Chestnut Bare Root 2,000
Quercus nigra Water Oak Bare Root 3,000
Quercus phellos Willow Oak Bare Root 3,000
Taxodium distichum Bald Cypress Bare Root 3,300
Total 23,800
Salix nigra Black Willow Live Stake 2,500
Cornus amomum Silky Dogwood Live Stake 1,500
Total 4,000
Table 10. Vegetation Plot Mitigation Success Summary
Planted Volunteer Total Success Average
Plot# Criteria Planted Stem
Stems/Acre Stems/Acre Stems/Acre
Met? Height(ft)
1 405 405 809 Yes 5.8
2 931 0 931 Yes 15.8
3 809 324 1133 Yes 12.1
4 364 40 405 Yes 22.9
5 526 81 607 Yes 9.7
6 647 526 1174 Yes 21.5
7 486 202 688 Yes 7.3
8 567 202 769 Yes 10.6
9 647 1093 1740 Yes 10.7
10 567 0 567 Yes 7.2
11 688 283 971 Yes 17.7
12 728 243 971 Yes 7.4
13 809 81 890 Yes 13.4
14 850 2590 3440 Yes 15.3
15 931 526 1457 Yes 3.0
16 769 1416 2185 Yes 8.1
17 647 1497 2145 Yes 11.9
18 728 809 1538 Yes 11.8
19 607 243 850 Yes 13.6
20 526 283 809 Yes 8.8
21 890 1052 1942 Yes 11.7
22 890 0 890 Yes 7.1
23 567 202 769 Yes 10.1
24 647 6070 6718 Yes 14.5
25 526 3076 3602 Yes 8.7
Project Avg 670 850 1520 Yes 11.4

Table 11: Stem Count Total and Planted by Plot Species
Buffalo Branch Current Plot Data(MY5 2020)
070402-01-0001 070402-01-0002 070402-01-0003 070402-01-0004 070402-01-0005 070402-01-0006 070402-01-0007 070402-01-0008 070402-01-0009 070402-01-0010 070402-01-0011 070402-01-0012 070402-01-0013 070402-01-0014 070402-01-0015 070402-01-0016
Scientific Name Common Name Species Type 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 PnoLS P-all T PnoLS P-all T PnoLS P-all T PnoLS P-all T PnoLS P-all T
Acer rubrum red maple Tree 5
Alnus serrulata hazel alder Shrub
Betula nigra river birch Tree 4 4 4 3 3 5 4 4 4 2 2 2 9 9 9 1 1 1 2 2 2 2 2 2 10 10 10 4 4 4 1 1 1
Carya hickory Tree
Cephalanthus occidentali common buttonbusF Shrub 1 1 1
Cornus amomum silky dogwood Shrub 2
Crataegus hawthorn Tree
Diospyros virginiana common persimmon Tree
Fraxinus pennsylvanica green ash Tree 1 1 1 2 2 2 3 3 3 6 6 6 1 1 1 4 4 4
Liquidambar sty raciflua sweetgum Tree 1 7 29
Liriodendron tulipifera tuliptree Tree 1 1 1 5 5 5 1 1 1
Morella cerifera wax myrtle shrub 1
Nyssa biflora swamp tupelo Tree
Nyssa sylvatica blackgum Tree 1 1 1 1 1 1 5 5 5 3 3 3 4 4 4 4 4 4 2 2 2
Pinus pine Tree
Pinus taeda loblolly pine Tree 9 5 1 1 11 5 20 7 6 2 35 13 35
Platanus occidentalis American sycamore Tree 7 7 7 6 6 6 2 2 2 1 1 1 3 3 3 2 2 2 1 1 1 2 2 2 9 9 9 1 1 1 1 1 1 5 5 5 3 3 3 6 6 6
Prunus serotina black cherry Tree 1 1 1 1
Quercus oak Tree
Quercus lyrata overcup oak Tree 2 2 2 3 3 3 3 3 3 4 4 4 4 4 4 3 3 3 2 2 2 1 1 1 5 5 5 1 1 1
Quercus michauxii swamp chestnut oak Tree 2 2 2 2 2 2 3 3 3 2 2 2 4 4 4 2 2 2
Quercus nigra water oak Tree
Quercus phellos willow oak Tree 3 3 3 2 2 2 3 3 3 2 2 2 3 3 3 2 2 2 2 2 2 8 8 8 2 2 2 1 1 1 2 2 2 3 3 3 11 11 11 3 3 3
Quercus rubra northern red oak Tree
Rhus copallinum flameleaf sumac shrub
Salix nigra black willow Tree
Taxodium distichum bald cypress Tree 5 5 5 3 3 3 1 1 1 1 1 1 4 4 4 2 2 2 2 2 2 4 4 4 4 4 4 4 4 4 8 8 8
Unknown Shrub or Tree
Stem count 10 10 20 23 23 23 20 20 28 9 9 10 13 13 15 16 16 29 12 12 17 14 14 19 16 16 43 14 14 14 17 17 24 18 18 24 20 20 22 21 21 85 23 23 36 19 19 54
size(ares) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
size(ACRES) 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02
Species count 6 6 8 6 6 6 8 8 10 4 4 5 4 4 6 4 4 6 4 4 5 6 6 7 5 5 7 5 5 5 4 4 5 6 6 7 6 6 7 5 5 7 4 4 5 7 7 8
Stems per ACRE 405 405 809 931 931 931 809 809 1133 364 364 405 526 526 607 647 647 1174 486 486 688 567 567 769 647 647 1740 567 567 688 688 971 728 728 971 809 809 890 850 850 3440 931 931 1457 769 769 2185
Current Plot Data(MY5 2020) Annual Means
070402-01-0017 070402-01-0018 070402-01-0019 070402-01-0020 070402-01-0021 070402-01-0022 070402-01-0023 070402-01-0024 070402-01-0025 MY5(2020) MY4(2019) MY3(2018) MY2(2017) MY1(2016) MYO(2016)
Scientific Name Common Name Species Type 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 PnoLS P-all T PnoLS P-all T PnoLS P-all T PnoLS P-all T
Acer rubrum red maple Tree 5 6 4
Alnus serrulata hazel alder Shrub 16 16
Betula nigra river birch Tree 1 1 1 4 4 4 7 7 7 54 54 56 52 52 58 52 52 57 52 52 55 53 53 53 62 62 62
Carya hickory Tree 2
Cephalanthus occidentali common buttonbusF Shrub 1 1 1 1 1 3 6
Cornus amomum silky dogwood Shrub 2
Crataegus hawthorn Tree 3
Diospyrosvirginiana common persimmon Tree 5 4
Fraxinus pennsylvanica green ash Tree 9 9 9 6 6 6 1 1 1 4 4 4 37 37 37 39 39 41 38 38 40 38 38 40 37 37 37 33 33 33
Liquidambarstyraciflua sweetgum Tree 85 65 187 6 90 158 3
Liriodendron tulipifera tuliptree Tree 3 3 3 10 10 10 9 9 11 9 9 13 10 10 10 15 15 15 17 17 17
Morella cerifera wax myrtle shrub 1
Nyssa biflora swamp tupelo Tree 1 1 1
Nyssa sylvatica blackgum Tree 1 1 1 1 1 1 5 5 5 6 6 6 3 3 3 1 1 1 2 2 2 39 39 39 44 44 44 53 53 55 54 54 54 60 60 60 70 70 70
Pinus pine Tree 25
Pinustaeda loblolly pine Tree 37 19 6 7 26 5 65 11 326 111 218 88 2
Platanus occidentalis American sycamore Tree 2 2 2 4 4 4 3 3 3 3 3 3 1 1 1 62 62 62 64 64 64 65 65 67 69 69 69 73 73 73 95 95 95
Prunus serotina black cherry Tree 1 1 1 1 1 1 3 3 4 14
Quercus oak Tree 4 4 4 13 13 13
Quercus lyrata overcup oak Tree 1 1 1 3 3 3 3 3 3 2 2 2 1 1 1 3 3 3 41 41 41 45 45 47 45 45 47 60 60 68 61 61 61 40 40 40
Quercus michauxii swamp chestnut oak Tree 1 9 9 9 7 7 7 31 31 32 32 32 34 40 40 40 43 43 43 50 50 50 51 51 51
Quercus nigra water oak Tree 2 2 2 5 5 5 16 16 16
Quercus phellos willow oak Tree 1 1 1 7 7 7 9 9 9 2 2 2 6 6 6 6 6 6 7 7 7 2 2 2 87 87 87 84 84 84 89 89 89 96 96 100 108 108 108 93 93 93
Quercus rubra northern red oak Tree 4
Rhus copallinum flameleaf sumac shrub 11 6
Salix nigra black willow Tree 2
Taxodium distichum bald cypress Tree 4 4 4 1 1 1 2 2 2 1 1 1 3 3 3 49 49 49 51 51 51 52 52 54 55 55 55 60 60 60 66 66 66
Unknown Shrub or Tree 2 1 1 1 9 9 9
Stem count 16 16 53 18 18 38 15 15 21 13 13 20 22 22 48 22 22 22 14 14 19 16 16 166 13 13 89 414 414 939 421 421 597 443 443 827 479 479 768 528 528 533 565 565 565
size(ares) 1 1 1 1 1 1 1 1 1 25 25 25 25 25 25
size(ACRES) 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.62 0.62 0.62 0.62 0.62 0.62
Species
Stems per ACRE 647 2145 728 728 1538 607 607 850� 526 809 890 890 1942 890 890 890 567 567 769 647 6718 526 526 3602 11 670 1520 10 681 966 7 717 1339 10 775 1243 851 855 863 12 915 915

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Appendix D.
Hydrology Data

Table 12. Documentation of Geomorphologically Significant Flow Events
Number of
Crest Gauge Bank fullEvents Maximum Bankfull Height(ft) Estimated Date of Ihghest Event
Crest Gauge 1(Reach Al)
MY1 2016 3 0.70 8/10/2016
MY2 2017 6 3.10 10/8/2016
MY3 2018 4 0.90 4/16/2018
MY4 2019 1 0.75 4/13/2019
MY5 2020 3 0.87 8/15/2020
MY6 2021 14 1.66 2/19/2021
Crest Gauge 2(Reach B2)
MY1 2016 0 N/A N/A
MY2 2017 3 2.34 10/8/2016
MY3 2018 3 0.30 4/16/2018
MY4 2019 1 0.30 4/13/2019
MY5 2020 0 N/A N/A
MY6 2021 1 1.60 7/8/2021
Crest Gauge 3(Reach C)
MY1 2016 0 N/A N/A
MY2 2017 3 1.85 10/8/2016
MY3 2018 0 N/A N/A
MY4 2019 0 N/A N/A
MY5 2020 1 0.50 8/15/2020
MY6 2021 0 N/A N/A
Number of
Crest Gauge flow Events Maximum Consecutive Flow Days Total fl ow Days Date Range of Consecutive Flow Days
Crest Gauge 2(Reach Bl)
MY5 2020 5 36 54 NA
MY6 2021 1 118 118 1/1/2021-4/28/2021
Crest Gauge 3(Reach C)
MY5 2020 1 78 78 NA
MY6 2021 5 102 128 1/1/2021-4/12/2021
Table 13. 2021 Rainfall Summary
Normal Limits JoCo Airport
I Month Average 30 70 Station
Percent Percent Precipitation
January 4.24 3.24 4.93 4.32
February 3.64 2.51 4.34 4.89
March 4.57 3.44 5.33 2.10
April 3.24 1.99 3.92 0.58
May 4.17 2.91 4.96 1.60
June 4.14 2.70 4.97 5.14
July 5.43 3.48 6.53 7.27
August 4.58 3.05 5.49 2.93
September 4.54 2.26 5.55 0.80
October 3.16 1.89 3.81 NA
November 2.95 1.86 3.55 NA
December 3.05 2.02 3.65 NA
Total 47.71 31.35 57.03 29.63
Above Normal Limits Below Normal Limits

MY6 Buffalo Branch Flow Gauge Reach B Stream Flow Hydrograph
15 - 10
13 - 9
11 - 8
^. 9 - 7
C
t .0
I 6
aai 7 -
_ To
C
a) al
5 5
3 '
4
•
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-3 - 1
.I I II II I I. ll I .� I III �. I�IIIlII II. . . III .. dl . . .I I .. . I l. II. I . I I I� .. �. I�.l III-5 '� 0
9/8/20 10/8/20 11/8/20 12/8/20 1/8/21 2/8/21 3/8/21 4/8/21 5/8/21 6/8/21 7/8/21 8/8/21 9/8/21
Months
Daily Rainfall -Reach B Bed

MY6 Buffalo Branch Flow Gauge Reach C Stream Flow Hydrograph
20 - 12
- 11
15 - 10
- 9
10 — 8
I
_
- �
5 - 6
m - 5
- 3
-5 - 2
- 1
I .I lI
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9/8/20 10/8/20 11/8/20 12/8/20 1/8/21 2/8/21 3/8/21 4/8/21 5/8/21 6/8/21 7/8/21 8/8/21 9/8/21
Months
Rainfall — Reach C Bed — — —DS Riffle