HomeMy WebLinkAbout20190868 Ver 1_DynamiteCreek_100125_MY2_2023_20240109
MONITORING YEAR 2
ANNUAL REPORT
FINAL
January 2024
DYNAMITE CREEK MITIGATION SITE
Rockingham County, NC
Roanoke River Basin
HUC 03010103
DMS Project No. 100125
NCDEQ Contract No. 7911
DMS RFP No. 16-007727
NCDWR Project No. 2019-0868 v1
USACE Action ID No. 2019-00909
Data Collection Period: January - November 2023
PREPARED FOR:
NC Department of Environmental Quality
Division of Mitigation Services
1652 Mail Service Center
Raleigh, NC 27699-1652
PREPARED BY:
312 West Millbrook Road, Suite 225
Raleigh, NC 27609
Jason Lorch
jlorch@wildlandseng.com
Phone: 919.851.9986
Dynamite Creek Mitigation Site
Monitoring Year 2 Annual Report - Final i
DYNAMITE CREEK MITIGATION SITE
Monitoring Year 2 Annual Report
TABLE OF CONTENTS
Section 1: PROJECT OVERVIEW .......................................................................................................1-1
1.1 Project Quantities and Credits ................................................................................................... 1-1
1.2 Project Goals and Objectives ..................................................................................................... 1-2
1.3 Project Attributes ....................................................................................................................... 1-4
Section 2: MONITORING YEAR 2 DATA ASSESSMENT .......................................................................2-1
2.1 Vegetative Assessment .............................................................................................................. 2-1
2.2 Vegetation Areas of Concern and Management ....................................................................... 2-1
2.3 Stream Assessment .................................................................................................................... 2-2
2.4 Stream Areas of Concern and Management.............................................................................. 2-2
2.5 Hydrology Assessment ............................................................................................................... 2-2
2.6 Wetland Assessment .................................................................................................................. 2-3
2.7 Monitoring Year 2 Summary ...................................................................................................... 2-3
Section 3: REFERENCES ...................................................................................................................3-1
TABLES
Table 1: Project Quantities and Credits ..................................................................................................... 1-1
Table 2: Goals, Performance Criteria, and Functional Improvements ...................................................... 1-2
Table 3: Project Attributes ......................................................................................................................... 1-4
FIGURES
Figure 1-1b Current Condition Plan View Map
APPENDICES
Appendix A Visual Assessment Data
Table 4 Visual Stream Morphology Stability Assessment Table
Table 5 Vegetation Condition Assessment Table
Stream Photographs
Bridge Photographs
Vegetation Plot Photographs
Vegetation Area of Concern Photographs– Conservation Easement Encroachment
Groundwater Well Gauge Photographs
Appendix B Vegetation Plot Data
Table 6 Vegetation Plot Data
Table 7 Vegetation Performance Standards Summary Table
Appendix C Stream Geomorphology Data
Cross-Section Plots
Table 8 Baseline Stream Data Summary
Table 9 Cross-Section Morphology Monitoring Summary
Appendix D Hydrology Data
Table 10 Bankfull Events
Table 11 Rainfall Summary
Dynamite Creek Mitigation Site
Monitoring Year 2 Annual Report - Final ii
Recorded Bankfull Events Plot
Table 12 Groundwater Gauge Summary
Groundwater Gauge Plots
Soil Temperature Probe Plot
Appendix E Project Timeline and Contact Info
Table 13 Project Activity and Reporting History
Table 14 Project Contact Table
Appendix F Additional Documentation
MY2 IRT Site Walk Meeting Summary – September 28, 2023
Dynamite Creek Mitigation Site
Monitoring Year 2 Annual Report - Final 1-1
Section 1: PROJECT OVERVIEW
The Dynamite Creek Mitigation Site (Site) is located in Rockingham County, approximately three miles
east of the City of Eden. The Site includes two unnamed tributaries (Dynamite Creek and UT1) draining
to Town Creek, which drains to the Dan River, and subsequently the Roanoke River. The project streams
are surrounded by forested land on the upper reaches and a cattle farm on the lower reaches. It is
included in the Eden Area Watershed Restoration Plan (EAWRP) which identifies sediment, fecal
coliform bacteria, and nutrients as the main water quality and habitat stressors. The Restoration
Watershed S-09 in the EAWRP includes the Site and identifies the area as a significant source of bacteria
loading from livestock. Table 3 presents information related to the project attributes.
1.1 Project Quantities and Credits
Mitigation work within the Site included restoration, enhancement I, and preservation of perennial and
intermittent stream channels along with wetland rehabilitation and re-establishment. Table 1 below
shows stream credits by reach, wetland credits by type, and credit totals expected by project closeout.
Table 1: Project Quantities and Credits
PROJECT MITIGATION QUANTITIES
Project Segment
Mitigation
Plan
Footage
As-Built
Footage
Mitigation
Category Restoration Level Mitigation
Ratio (X:1) Credits1 Comments
Stream
Dynamite
Creek R1 498 498 Warm P 10.0 49.800 Conservation Easement
Dynamite
Creek R2
361 356 Warm R 1.0 361.000 Full Channel Restoration
30 30 N/A N/A 0.0 N/A Easement Break
359 362 Warm R 1.0 359.000 Full Channel Restoration
Dynamite
Creek R3 155 158 Warm R 1.0 155.000 Full Channel Restoration
Dynamite
Creek R4 522 522 Warm P 10.0 52.200 Conservation Easement
Dynamite
Creek R5 555 610 Warm EI 1.5 370.000
Pattern and Bank
Stabilization,
Conservation Easement
Dynamite
Creek R6
656 651 Warm R 1.0 656.000 Full Channel Restoration
22 22 N/A N/A 0.0 N/A Internal Crossing
Dynamite
Creek R7 1,570 1,563 Warm R 1.0 1,570.000 Full Channel Restoration
UT1 287 287 Warm P 10.0 28.700 Conservation Easement
Total: 3,601.700
1A light touch approach was used on Dynamite Creek Reach 5, only short sections of work were done without full design parameters. As-
Built footage is more than projected because it was not necessary to move Reach 5 as much as anticipated to stabilize it. Credits are
calculated using Mitigation Plan Footage.
Blue = Restoration Yellow = Enhancement I Green = Preservation
Dynamite Creek Mitigation Site
Monitoring Year 2 Annual Report - Final 1-2
PROJECT MITIGATION QUANTITIES
Project Segment
Mitigation
Plan
Acreage
As-Built
Acreage
Mitigation
Category Restoration Level Mitigation
Ratio (X:1) Credits Comments
Wetland
Wetland
Rehabilitation 5.475 5.475 Riverine Rehabilitation 1.5 3.650
Wetland
Re-establishment 5.541 5.541 Riverine Re-establishment 1.0 5.541
Total: 9.191
Restoration Level Stream Riparian Wetland
Warm Riverine
Restoration 3,101.000
Enhancement I 370.000
Enhancement II
Preservation 130.700
Re-Establishment 5.541
Rehabilitation 3.650
Total Credits 3,601.700 9.191
1.2 Project Goals and Objectives
The project is intended to provide numerous ecological benefits. Table 2 below describes expected
outcomes to water quality and ecological processes and provides project goals and objectives.
Table 2: Goals, Performance Criteria, and Functional Improvements
Goal Objective/ Treatment Likely Functional
Uplift
Performance
Criteria Measurement Cumulative
Monitoring Results
Exclude
livestock
from
streams.
Install fencing around the
conservation easement
adjacent to livestock
pastures.
Reduction in
sediment, nutrient,
and fecal coliform
bacteria inputs
through livestock
exclusion.
Prevent
encroachment by
livestock.
Visually inspect the
perimeter of the
site to ensure no
livestock access is
occurring.
Evidence of cow
access was found in
the CE. Wildlands is
working with
landowners on a
solution.
Improve the
stability of
stream
channels.
Construct stream
channels that will
maintain stable cross-
sections, patterns, and
profiles over time. Repair
eroding stream banks
with bioengineering
methods. Restore profile
to remove dam breach
headcut.
Reduce shear stress
on channel
boundary. Reduce
sediment inputs
from bank erosion.
Entrenchment
ratio over 2.2 for
C/E or 1.4 for B
restoration
reaches and bank
height ratio below
1.2 with visual
assessments
showing
progression
towards stability.
Cross-section data
will be collected
during MY1, MY2,
MY3, MY5, and
MY7 and visual
inspections will be
performed
annually.
Cross-sections show
streams are stable
and functioning as
designed. ERs are
over 2.2 and BHRs
are below 1.2.
Dynamite Creek Mitigation Site
Monitoring Year 2 Annual Report - Final 1-3
Goal Objective/ Treatment Likely Functional
Uplift
Performance
Criteria Measurement Cumulative
Monitoring Results
Improve
in-stream
habitat.
Install habitat features
such as constructed
riffles, cover logs, and
brush toes into
restored/enhanced
streams. Add woody
materials to channel
beds. Construct pools of
varying depth.
Increase and
diversify available
habitats for
macroinvertebrates,
fish, and
amphibians leading
to colonization and
increase in
biodiversity over
time. Add
complexity
including LWD to
the streams.
There is no
required
performance
standard for this
metric.
N/A N/A
Reconnect
channels
with
floodplains.
Reconstruct stream
channels with appropriate
bankfull dimensions and
depth relative to the
existing floodplain.
Allow more
frequent flood flows
to disperse on the
floodplain. Improve
wetland hydrology
on Dynamite Creek
Reach 7.
Four bankfull
events in separate
years within
monitoring period.
Crest gauge and/or
pressure
transducer
recording flow
elevations.
Two bankfull events
were recorded on
Dynamite Creek.
Improve
wetland
hydrology.
Remove livestock to allow
soil profiles to stabilize.
Remove drain effect of
channelized stream and
floodplain berms and
swales.
Increased surface
water residency
time will provide
contact treatment
and groundwater
recharge potential.
Free groundwater
table within 12
inches of the
ground surface for
12% of the
growing season.
Groundwater
gauges recording
water table
elevation.
Five groundwater
gauges met the
performance
standard, the other
five did not.
Restore and
enhance
native
floodplain
and
streambank
vegetation.
Plant native tree and
understory species in
riparian zones and plant
native shrub and
herbaceous species on
streambanks. Treat
invasive species within
project area.
Reduce sediment
inputs from bank
erosion and runoff.
Increase nutrient
cycling and storage
in floodplain.
Provide riparian
habitat. Add a
source of LWD and
organic material to
stream.
210 planted stems
per acre at MY7.
Interim survival
rate of 320 planted
stems per acre at
MY3 and 260 at
MY5. Trees in each
plot must average
7 ft at MY5 and 10
ft at MY7.
One hundred
square meter
vegetation plots
are placed on 2%
of the planted area
of the Site. Data
will be collected
during MY1, MY2,
MY3, MY5, and
MY7 and visual
inspections will be
performed
annually.
All 13 vegetation
plots have a planted
stem density
greater than 320
stems per acre.
Permanently
protect the
project Site
from harmful
uses.
Establish a conservation
easement on the site.
Preserve high quality
stream reaches through
the placement of a
conservation easement
on site.
Protect Site from
encroachment on
the riparian corridor
and direct impact to
streams and
wetlands.
Prevent easement
encroachment.
Visually inspect the
perimeter of the
Site to ensure no
easement
encroachment is
occurring.
Vehicle access
occurred near the
bridge crossing. The
CE boundary has
been more clearly
marked and it is no
longer a concern.
Note cow
encroachment
above.
Dynamite Creek Mitigation Site
Monitoring Year 2 Annual Report - Final 1-4
1.3 Project Attributes
The Site consists of streams on lands which are forested along the upper reaches and which have been
historically farmed along the lower reaches on the greater Dan River floodplain. Trees on the hilltops
east of project streams were logged in 2007, but the area is nearly entirely reforested. The project
includes two perennial streams, Dynamite Creek and UT1, as well as three not for credit intermittent
streams. Dynamite Creek begins at a headcut and is buffered by mature hardwood forest, it flows
through a powerline easement, a relic dam, and was situated against valley walls causing erosion. As
Dynamite Creek flows out of the forest and onto the Dan River floodplain, it previously flowed through
an online pond and open cattle pasture. Cattle had full access to the pond and stream, which was
dredged by the farmer approximately every ten years. UT1 flows through mature hardwood forest to its
confluence with Dynamite Creek in Reach 4. Aerial photography shows land use and riparian buffer
extents have remained essentially unchanged since at least 1951. Table 3 below and Table 8 in Appendix
C present additional information on pre-restoration conditions.
Table 3: Project Attributes
PROJECT INFORMATION
Project Name Dynamite Creek
Mitigation Site County Rockingham County
Project Area (acres) 22.9 Project Coordinates 36°29'3.32"N, 79°42'39.31"W
PROJECT WATERSHED SUMMARY INFORMATION
Physiographic Province Piedmont River Basin Roanoke River
USGS HUC 8-digit 03010103 USGS HUC 14-digit 03010103230040
DWR Sub-basin 03-02-2003 Land Use Classification
75% forested; 21.5% managed
herbaceous cover/pasture;
2.5% shrubland; 1% developed
Project Drainage Area
(acres) 119 Percentage of Impervious Area 0.5%
RESTORATION TRIBUTARY SUMMARY INFORMATION
Parameters Dynamite Creek
Reach 2 Reach 3 Reach 6 Reach 7
Pre-project length (feet) 947 206 703 1,376
Post-project (feet) 748 158 673 1,563
Valley confinement Confined Unconfined
Drainage area (acres) 35 36 75 119
RESTORATION TRIBUTARY SUMMARY INFORMATION
Parameters Dynamite Creek
Reach 2 Reach 3 Reach 6 Reach 7
Perennial, Intermittent, Ephemeral Perennial
DWR Water Quality Classification C
Dominant Stream Classification (existing) E4 C4 E4 C5
Dominant Stream Classification (proposed) B4/C4 B4/C4 C4 C4/E4
Dominant Evolutionary class (Simon) if applicable Stage III/IV Stage IV
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Monitoring Year 2 Annual Report - Final 1-5
REGULATORY CONSIDERATIONS
Parameters Applicable? Resolved? Supporting Documentation
Water of the United States - Section 404 Yes Yes USACE Nationwide Permit No.
27 and DWQ 401 Water Quality
Certification No. 4134. Water of the United States - Section 401 Yes Yes
Endangered Species Act Yes Yes Categorical Exclusion in
Mitigation Plan
(Wildlands, 2021) Historic Preservation Act Yes Yes
Coastal Zone Management Act (CZMA or CAMA) No No N/A
Essential Fisheries Habitat No N/A N/A
Dynamite Creek Mitigation Site
Monitoring Year 2 Annual Report - Final 2-1
Section 2: MONITORING YEAR 2 DATA ASSESSMENT
Annual monitoring and site visits were conducted during MY2 to assess the condition of the project. The
vegetation and stream success criteria for the Site follow the approved success criteria presented in the
Mitigation Plan (Wildlands, 2021). Performance criteria for vegetation, stream, and hydrologic
assessment are located in Section 1.2 Table 2: Goals, Performance Criteria, and Functional
Improvements. Methodology for annual monitoring is described in the Monitoring Year 0 Annual Report
(Wildlands, 2022).
2.1 Vegetative Assessment
The MY2 vegetation survey was completed in August 2023. Vegetation monitoring resulted in an
average density of 492 stems per acre of project planting list species across all vegetation plots, which is
well above the interim success criteria of 320 stems per acre required at MY3. All vegetation plots
individually met the interim success criteria. Planting list stem densities for each plot range from 324 to
850 stems per acre. Despite being in the old pond bed, vegetation plot 3 shows thick herbaceous
vegetation and is exceeding interim success criteria with 324 stems per acre consisting of 8 individuals of
7 different species. Additionally, dense herbaceous vegetation is covering the floodplain. Refer to
Appendix A for Vegetation Plot Photographs and the Vegetation Condition Assessment Table and
Appendix B for Vegetation Plot Data.
Mature trees in the existing forest seem to be surviving well. There were multiple large mature trees
that had fallen in the preservation area across the stream long before construction began. These trees
continue to add varied habitat and large woody debris to the forest floor. A few more trees have fallen
in the preservation area during storms. Two mature trees along Dynamite Creek Reach 6 (restoration)
have fallen, one just after as-built install was completed. Both were removed from the stream. A few
large trees on the floodplain around Dynamite Creek Reach 7 have died but are still standing snags.
However, it is difficult to tell the cause of mortality for these trees. Cause of death could be attributed to
many things including change in water table elevation, insect infestation, being blown over in a storm
because of loss of neighboring mature trees for stability, or in some areas damage from heavy
machinery. The vast majority of existing mature trees are healthy and surviving.
2.2 Vegetation Areas of Concern and Management
To help trees outcompete dense herbaceous vegetation, herbicide was applied in rings around planted
trees where necessary in April 2023. Additionally, soil tests were done to learn what was lacking.
Appropriate soil amendments were then applied to the base of trees across the floodplain along
Dynamite Creek Reach 7 in order to improve soil fertility and boost tree growth. In an effort to give
planted trees a good head start, herbicide ring sprays will again be applied to herbaceous vegetation
around planted trees in areas where vegetation is thick in Spring 2024. Soil amendments will be applied
again to the base of smaller trees to help them continue to compete with surrounding herbaceous
vegetation.
Small, scattered populations of multiflora rose (Rosa multiflora) were treated on the floodplain along
Dynamite Creek Reach 7 in May 2023 using glyphosate in a foliar spray application. Wildlands recognizes
that multiple treatments are typically needed for effective invasive plant control. The Site will continue
to be monitored for resprouts of multiflora rose and other invasive species. Additional treatments will
be applied as needed.
A small vehicular access encroachment was discovered near the bridge crossing in January 2023 (see
Figure 1b for location). We believe one of the landowner’s family members did not see the signs and
followed an old dirt path down the hill from the house to the bridge crossing. Another t-post was added
Dynamite Creek Mitigation Site
Monitoring Year 2 Annual Report - Final 2-2
in the middle of the old path, and polytape was strung between the t-post signs to make the edge of the
conservation easement obvious. No other vehicular encroachments have occurred since, vegetation is
growing well, and this area is no longer a concern. See Vegetation Area of Concern Photographs–
Conservation Easement Encroachment in Appendix A for current photographs from November 2023.
Additionally, evidence has been found that cows from the adjacent field have been accessing the
conservation easement. Wildlands has been in contact with both the landowners and the tenant farmer.
Both have been responsive, and no permanent damage has been done. It was thought the problem had
been resolved but it now seems that the calves are still finding a way to access the easement. Figure 1b
shows a polygon connecting the approximate area where a few spread out droppings have been
observed, indicating cow access. Wildlands is in the process of setting up a meeting with the landowners
and tenant farmer so we can work together to find a solution. Wildlands will continue working to
resolve the problem and monitor for cow access.
2.3 Stream Assessment
Morphological surveys for MY2 were completed in March 2023. All streams within the Site are stable
and functioning as designed. Cross-sections show minimal change in max depth and bankfull cross-
sectional area. Bank height ratios are less than 1.2 and entrenchment ratios are over 2.2. Specific
entrenchment ratio numbers are not included in this report template but are available upon request.
Cross-sections show slight deviations from as-built due to sediment deposition and establishment of
vegetation. Some sediment deposition in pools is natural and expected. Pebble count data is no longer
required per the September 29, 2021 Technical Work Group Meeting and is not included in this report.
The North Carolina Interagency Review Team (IRT) reserves the right to request pebble count
data/particle distributions if deemed necessary during the monitoring period. Refer to Appendix A for
the Visual Stream Morphology Stability Assessment Table, Current Condition Plan View Maps, Stream
Photographs, and Bridge Photographs. Refer to Appendix C for the morphological data and cross-section
plots.
2.4 Stream Areas of Concern and Management
While waiting for the live stakes to grow and shade the stream channels, in-stream vegetation was
treated with glyphosate in August 2023 on the lower reaches of Dynamite Creek. Additional live stakes
will be planted along the stream banks of Dynamite Creek Reach 7 in areas where those planted at as-
built did not survive. Dynamite Creek Reaches 2, 3, and 6 will also be inspected for live stake survival,
with additional live stakes planted as needed.
During the September 2023 IRT site walk, a stretch of the Dynamite Creek Reach 2 stream channel was
observed to be damp but did not show active flow. A flow gauge was requested and was installed on
November 16. Please see Section 2.5 below for more details and Figure 1a for flow gauge location.
Wildlands will monitor stream flow both visually and through the gauge data.
Additionally at the confluence of UT1 and Dynamite Creek, the stream was observed flowing through a
hole on the downstream right side of the channel, behind an old fallen tree that had been acting as
grade control. The IRT requested an additional photo point be added to monitor the area and confirm
stream stability. The photo point (PP16) was installed, and photos were taken on November 16, 2023.
Please see Stream Photographs in Appendix A and Figure 1a for the location.
2.5 Hydrology Assessment
By the end of MY7, four bankfull events must have occurred in separate years on Dynamite Creek.
Bankfull events were recorded on Reach 6 in both February and April 2023. Refer to Appendix D for
hydrology summary data and the Recorded Bankfull Events Plot.
Dynamite Creek Mitigation Site
Monitoring Year 2 Annual Report - Final 2-3
Dynamite Creek was identified as a perennial stream before project construction so only the crest gauge
to record bankfull events was required. The crest gauge was installed like a flow gauge (beneath the
thalweg of the stream channel) to keep the transducer from freezing. This also allows the gauge to
function in both roles, and it has shown consistent flow since installation. However, this gauge is located
on Dynamite Creek Reach 6, lower in the watershed and elevation. At the end of September 2023,
during the IRT site walk a stretch of the Dynamite Creek Reach 2 channel was damp but did not show
stream flow. The IRT requested a flow gauge to confirm consistent flow in the area. The flow data for
2024 will be included in this section of the MY3 annual report.
2.6 Wetland Assessment
Ten groundwater gauges were installed across wetland areas. The performance criterion for wetland
hydrology is groundwater within 12 inches of the ground surface consecutively for 12.0% (31 days) of
the growing season. A soil temperature probe was installed to help confirm growing season, data shows
soil temperature did not drop below 41 degrees Fahrenheit between the end of February and mid-
November. Since the growing season for this project has been set as March 1 through November 14
(258 days) and was approved by the IRT during the April 2023 Credit Release Meeting, the soil
temperature probe is no longer necessary and will be removed.
Of the ten groundwater gauges, gauges 2, 5, 7, 9, and 10 met the success criteria with hydroperiods
ranging from 13.1% (34 consecutive days) to 31.3% (81 consecutive days). The other five groundwater
gauge hydroperiods ranged from 1.2% (3 consecutive days) to 2.7% (7 consecutive days).
According to the National Integrated Drought Information System, all of Rockingham County was
abnormally dry January 2022, and a portion of the county was abnormally dry mid-June through late
August 2022, and late October through November 2022 (NOAA, 2023). From mid-March through the
end of May 2023 the county was abnormally dry and from mid-October until report writing, all of
Rockingham County was in the first level of drought (NOAA, 2023). Originally, it was thought that
groundwater levels needed more time and rain to return to within 12 inches of the soil surface across
the Dynamite Creek Reach 7 floodplain. Given that rainfall seems to have been closer to normal for
much of 2023 and only half of the groundwater wells are meeting success criterion, Wildlands would like
to investigate further. While 2 years of data is not enough to show a consistent pattern, it does seem
that groundwater wells closer to the hillslope on the south side of Dynamite Creek record groundwater
levels closer to the surface. Groundwater wells further from the toe of slope, and especially on the north
side of the stream, show deeper levels of groundwater. There are multiple theories on why groundwater
well gauges may not show the expected wetland data, however, we do not know the cause. In order to
investigate where on the floodplain the groundwater seems to drop below the 12 inches standard,
Wildlands will install two more groundwater well gauges in winter 2023/2024.
Refer to Figures 1-1b for groundwater well gauge locations and Appendix D for groundwater hydrology
data and plots.
2.7 Monitoring Year 2 Summary
Vegetation across the Site is exceeding performance standards, and all vegetation plots individually are
on track to achieve the MY3 interim requirement of 320 planted stems per acre. MY2 data shows an
average density of 492 stems per acre of project planting list species across plots. Scattered stems of
multiflora rose were treated, and invasive vegetation will be monitored and follow up treatments will be
scheduled as necessary. Dense herbaceous vegetation has filled in across the floodplain. Ring sprays and
soil amendments will be applied around the base of trees in spring 2024 to help planted trees compete
with herbaceous vegetation. The easement boundary has been walked, any signage issues found were
resolved, and two encroachments were observed during MY2. One vehicular access easement
Dynamite Creek Mitigation Site
Monitoring Year 2 Annual Report - Final 2-4
encroachment was observed at the beginning of the year, has been resolved, and is no longer a concern.
Evidence of cow access has been observed in the easement and Wildlands is working with the
landowners and tenant farmer to find a solution. All project streams are stable and functioning as
intended. Two bankfull events were observed on Dynamite Creek Reach 6. A flow gauge was installed on
Dynamite Creek Reach 2 in November. Stream flow data will be included in future reports. An additional
photo point was added at the confluence of Dynamite Creek and UT1 to monitor for stream stability.
Five of the ten groundwater well gauges surpassed the success criterion. Two additional groundwater
gauges will be installed to narrow down where on the floodplain groundwater seems to be dropping
below the success standard.
Summary information and data related to the performance of various project and monitoring elements
can be found in the tables and figures in the report appendices. All raw data supporting the tables and
figures in the appendices are available from DMS upon request.
Dynamite Creek Mitigation Site
Monitoring Year 2 Annual Report - Final 3-1
Section 3: REFERENCES
Doll, B.A., Grabow, G.L., Hall, K.A., Halley, J., Harman, W.A., Jennings, G.D., and Wise, D.E. 2003. Stream
Restoration, A Natural Channel Design Handbook.
Harrelson, C.C; Rawlins, C.L.; Potyondy, John P. 1994. Stream Channel Reference Sites: An Illustrated
Guide to Field Technique. Gen. Tech. Rep. RM-245. Fort Collins, CO: U.S. Department of Agriculture,
Forest Service, Rocky Mountain Forest and Range Experiment Station.
Lee, M.T., Peet, R.K., Roberts, S.D., & Wentworth, T.R. 2008. CVS-EEP Protocol for Recording Vegetation
Version 4.2. Accessed at: http://cvs.bio.unc.edu/protocol/cvs-eep-protocol-v4.2-lev1-2.pdf
NOAA. 2023. National Integrated Drought Information System. Drought Conditions for Rockingham
County. Accessed at: https://www.drought.gov/states/north-carolina/county/rockingham
North Carolina Interagency Review Team (NCIRT). 2016. Wilmington District Stream and Wetland
Compensatory Mitigation Update. Accessed at: https://saw-
reg.usace.army.mil/PN/2016/Wilmington-District-Mitigation-Update.pdf
Piedmont Triad Regional Council. 2014. Eden Area Watershed Restoration Plan. Accessed at:
https://www.ptrc.org/home/showpublisheddocument/3540/636573374393630000
Rosgen, D. L. 1994. A classification of natural rivers. Catena 22:169-199.
Rosgen, D.L. 1996. Applied River Morphology. Pagosa Springs, CO: Wildland Hydrology Books.
Rosgen, D.L. 1997. A Geomorphological Approach to Restoration of Incised Rivers. Proceedings of the
Conference on Management of Landscapes Disturbed by Channel Incision. Center For
Computational Hydroscience and Bioengineering, Oxford Campus, University of Mississippi, Pages
12-22.
United States Army Corps of Engineers. 2003. Stream Mitigation Guidelines. USACE, NCDENR-DWQ,
USEPA, NCWRC.
United States Geological Survey. 1998. North Carolina Geology.
Wildlands Engineering, Inc. (2021). Dynamite Creek Mitigation Site Final Mitigation Plan. DMS, Raleigh,
NC.
Wildlands Engineering, Inc. (2022). Dynamite Creek Monitoring Year 0 Annual Report. DMS, Raleigh, NC.
APPENDIX A. Visual Assessment Data
Table 4. Visual Stream Morphology Stability Assessment Table
Dynamite Creek Mitigation Site
DMS Project No. 100125
Monitoring Year 2 - 2023
Dynamite Creek Reach 2 and 3
876
1,752
Surface Scour/
Bare Bank
Bank lacking vegetative cover resulting simply from
poor growth and/or surface scour.0 100%
Toe Erosion
Bank toe eroding to the extent that bank failure
appears likely. Does NOT include undercuts that are
modest, appear sustainable and are providing habitat.
0 100%
Bank Failure Fluvial and geotechnical - rotational, slumping,
calving, or collapse.0 100%
0 100%
Grade Control Grade control structures exhibiting maintenance of
grade across the sill. 24 24 100%
Bank Protection Bank erosion within the structures extent of influence
does not exceed 15%. 5 5 100%
Visual assessment was completed November 16, 2023.
Dynamite Creek Reach 5
610
1,220
Surface Scour/
Bare Bank
Bank lacking vegetative cover resulting simply from
poor growth and/or surface scour.0 100%
Toe Erosion
Bank toe eroding to the extent that bank failure
appears likely. Does NOT include undercuts that are
modest, appear sustainable and are providing habitat.
0 100%
Bank Failure Fluvial and geotechnical - rotational, slumping,
calving, or collapse.0 100%
0 100%
Grade Control Grade control structures exhibiting maintenance of
grade across the sill. 0 0 100%
Bank Protection Bank erosion within the structures extent of influence
does not exceed 15%. 6 6 100%
Visual assessment was completed November 16, 2023.
Structure
Major Channel Category Metric
Number
Stable,
Performing
as Intended
Total
Number in
As-Built
Amount of
Unstable
Footage
Assessed Stream Length
Assessed Bank Length
Bank
Totals:
% Stable,
Performing as
Intended
Assessed Stream Length
Assessed Bank Length
Bank
Totals:
Structure
% Stable,
Performing as
Intended
Major Channel Category Metric
Number
Stable,
Performing
as Intended
Total
Number in
As-Built
Amount of
Unstable
Footage
Table 4. Visual Stream Morphology Stability Assessment Table
Dynamite Creek Mitigation Site
DMS Project No. 100125
Monitoring Year 2 - 2023
Dynamite Creek Reach 6 and 7
2,214
4,428
Surface Scour/
Bare Bank
Bank lacking vegetative cover resulting simply from
poor growth and/or surface scour.0 100%
Toe Erosion
Bank toe eroding to the extent that bank failure
appears likely. Does NOT include undercuts that are
modest, appear sustainable and are providing
habitat.
0 100%
Bank Failure Fluvial and geotechnical - rotational, slumping,
calving, or collapse.0 100%
0 100%
Grade Control Grade control structures exhibiting maintenance of
grade across the sill. 9 9 100%
Bank Protection Bank erosion within the structures extent of
influence does not exceed 15%. 20 20 100%
Visual assessment was completed November 16, 2023.
Structure
Assessed Stream Length
Assessed Bank Length
Bank
Totals:
% Stable,
Performing as
Intended
Major Channel Category Metric
Number
Stable,
Performing
as Intended
Total
Number in
As-Built
Amount of
Unstable
Footage
Dynamite Creek Mitigation Site
DMS Project No. 100125
Monitoring Year 2 - 2023
Planted Acreage 15.4
Vegetation Category Definitions
Mapping
Threshold
(ac)
Combined
Acreage
% of Planted
Acreage
Bare Areas Very limited cover of both woody and herbaceous material.0.10 0 0%
Low Stem Density Areas Woody stem densities clearly below target levels based on current MY stem count
criteria.0.10 0 0%
0 0%
Areas of Poor Growth
Rates Planted areas where average height is not meeting current MY Performance Standard.0.10 0 0%
0.0 0%
Visual assessment was completed November 16, 2023.
Easement Acreage 22.9
Vegetation Category Definitions
Mapping
Threshold
(ac)
Combined
Acreage
% of
Easement
Acreage
Invasive Areas of Concern
Invasives may occur outside of planted areas and within the easement and will
therefore be calculated against the total easement acreage. Include species with the
potential to directly outcompete native, young, woody stems in the short-term or
community structure for existing communities. Invasive species included in
summation above should be identified in report summary.
0.10 0 0%
Easement Encroachment
Areas
Encroachment may be point,line,or polygon. Encroachment to be mapped consists of
any violation of restrictions specified in the conservation easement.Common
encroachments are mowing,cattle access,vehicular access.Encroachment has no
threshold value as will need to be addressed regardless of impact area.
none
Visual assessment was completed November 16, 2023.
*Tire tracks from a vehicle and evidence of cow access were discovered inside the easement. The vehicular access encroachment has been resolved.
Table 5. Vegetation Condition Assessment Table
Total
Cumulative Total
2 Encroachments Noted*
/ 2.7 ac
STREAM PHOTOGRAPHS
Dynamite Creek Mitigation Site
Appendix A: Visual Assessment Data – Stream Photographs
PHOTO POINT 1 Dynamite Creek R1 – upstream (03/01/2023) PHOTO POINT 1 Dynamite Creek R1 – downstream (03/01/2023)
PHOTO POINT 2 Dynamite Creek R2 – upstream (03/01/2023) PHOTO POINT 2 Dynamite Creek R2 – downstream (03/01/2023)
PHOTO POINT 3 Dynamite Creek R2 – upstream (03/01/2023) PHOTO POINT 3 Dynamite Creek R2 – downstream (03/01/2023)
Dynamite Creek Mitigation Site
Appendix A: Visual Assessment Data – Stream Photographs
PHOTO POINT 4 Dynamite Creek R3 – upstream (03/01/2023) PHOTO POINT 4 Dynamite Creek R3 – downstream (03/01/2023)
PHOTO POINT 5 Dynamite Creek R4 – upstream (03/01/2023) PHOTO POINT 5 Dynamite Creek R4 – downstream (03/01/2023)
PHOTO POINT 6 Dynamite Creek R5 – upstream (03/01/2023) PHOTO POINT 6 Dynamite Creek R5 – downstream (03/01/2023)
Dynamite Creek Mitigation Site
Appendix A: Visual Assessment Data – Stream Photographs
PHOTO POINT 7 Dynamite Creek R5 – upstream (03/01/2023) PHOTO POINT 7 Dynamite Creek R5 – downstream (03/01/2023)
PHOTO POINT 8 Dynamite Creek R6 – upstream (03/01/2023) PHOTO POINT 8 Dynamite Creek R6 – downstream (03/01/2023)
PHOTO POINT 9 Dynamite Creek R6 – upstream (03/01/2023) PHOTO POINT 9 Dynamite Creek R6 – downstream (03/01/2023)
Dynamite Creek Mitigation Site
Appendix A: Visual Assessment Data – Stream Photographs
PHOTO POINT 10 Dynamite Creek R7 – upstream (03/01/2023) PHOTO POINT 10 Dynamite Creek R7 – downstream (03/01/2023)
PHOTO POINT 11 Dynamite Creek R7 – upstream (03/01/2023) PHOTO POINT 11 Dynamite Creek R7 – downstream (03/01/2023)
PHOTO POINT 12 Dynamite Creek R7 – upstream (03/01/2023) PHOTO POINT 12 Dynamite Creek R7 – downstream (03/01/2023)
Dynamite Creek Mitigation Site
Appendix A: Visual Assessment Data – Stream Photographs
PHOTO POINT 13 Dynamite Creek R7 – upstream (03/01/2023) PHOTO POINT 13 Dynamite Creek R7 – downstream (03/01/2023)
PHOTO POINT 14 Dynamite Creek R7 – upstream (03/01/2023) PHOTO POINT 14 Dynamite Creek R7 – downstream (03/01/2023)
PHOTO POINT 15 UT1 – upstream (03/01/2023) PHOTO POINT 15 UT1 – downstream (03/01/2023)
Dynamite Creek Mitigation Site
Appendix A: Visual Assessment Data – Stream Photographs
PHOTO POINT 16* Dynamite Creek Confluence with UT1 –
upstream (11/16/2023) PHOTO POINT 16* Dynamite Creek – downstream (11/16/2023)
*Photo Point 16 was added 11/16/2023 to monitor stability around the natural log sill seen in the upstream view as requested by the IRT.
BRIDGE PHOTOGRAPHS
Dynamite Creek Mitigation Site
Appendix A: Visual Assessment Data - Bridge Photographs
Dynamite Creek R7 - Looking Upstream (03/01/2023) Dynamite Creek R6 - Looking Downstream (03/01/2023)
VEGETATION PLOT PHOTOGRAPHS
Dynamite Creek Mitigation Site
Appendix A: Visual Assessment Data – Vegetation Plot Photographs
FIXED VEG PLOT 1 (08/02/2023) FIXED VEG PLOT 2 (08/02/2023)
FIXED VEG PLOT 3 (08/02/2023) FIXED VEG PLOT 4 (08/02/2023)
FIXED VEG PLOT 5 (08/02/2023) FIXED VEG PLOT 6 (08/02/2023)
Dynamite Creek Mitigation Site
Appendix A: Visual Assessment Data – Vegetation Plot Photographs
FIXED VEG PLOT 7 (08/02/2023) FIXED VEG PLOT 8 (08/02/2023)
FIXED VEG PLOT 9 (08/02/2023) FIXED VEG PLOT 10 (08/02/2023)
FIXED VEG PLOT 11 (08/02/2023)
Dynamite Creek Mitigation Site
Appendix A: Visual Assessment Data – Vegetation Plot Photographs
RANDOM VEG PLOT 12 (08/02/2023) RANDOM VEG PLOT 13 (08/02/2023)
VEGETATION AREA OF CONCERN PHOTOGRAPHS
Conservation Easement Encroachment
Dynamite Creek Mitigation Site
Appendix A: Visual Assessment Data – Vegetation Area of Concern Photographs
Easement Encroachment – Vehicle Access
Photo taken November
16, 2023 along the edge
of the easement showing
the polytape clearly
marking the edge of the
conservation easement.
Dirt path is to the left
and comes down the hill
behind the large trees,
the easement is to the
right.
Photo taken November
16, 2023 standing in the
dirt path, facing into the
easement toward
Dynamite Creek and the
bridge crossing. The
added t-post and
polytape marking the
easement boundary are
visible. Vegetation is
growing well and no new
vehicle tracks have been
observed.
GROUNDWATER WELL GAUGE PHOTOGRAPHS
Dynamite Creek Mitigation Site
Appendix A: Visual Assessment Data – Groundwater Well Gauge Photographs
GROUNDWATER WELL GAUGE 1 – (11/16/2023) GROUNDWATER WELL GAUGE 2 – (11/16/2023)
GROUNDWATER WELL GAUGE 3 – (11/16/2023) GROUNDWATER WELL GAUGE 4 – (11/16/2023)
GROUNDWATER WELL GAUGE 5 – (11/16/2023) GROUNDWATER WELL GAUGE 6 – (11/16/2023)
Dynamite Creek Mitigation Site
Appendix A: Visual Assessment Data – Groundwater Well Gauge Photographs
GROUNDWATER WELL GAUGE 7 – (11/16/2023) GROUNDWATER WELL GAUGE 8 – (11/16/2023)
GROUNDWATER WELL GAUGE 9 – (11/16/2023) GROUNDWATER WELL GAUGE 10 – (11/16/2023)
APPENDIX B. Vegetation Plot Data
Table 6. Vegetation Plot Data
Dynamite Creek Mitigation Site
DMS Project No. 100125
Monitoring Year 2 - 2023
15.4
2022-01-11
2023-08-02
0.0247
Planted Total Planted Total Planted Total Planted Total Planted Total Planted Total
Acer negundo boxelder Tree FAC 1 1 2 2 1 1 2 2 1 1
Alnus serrulata hazel alder Tree OBL 1 1
Betula nigra river birch Tree FACW 3 3 1 1 1 1 2 2 2 2
Celtis laevigata sugarberry Tree FACW 1 1 1 1 2 2
Diospyros virginiana common persimmon Tree FAC
Fraxinus pennsylvanica green ash Tree FACW
Platanus occidentalis American sycamore Tree FACW 3 3 4 4 2 2 2 2 3 3
Quercus lyrata overcup oak Tree OBL 1 1 1 1 1 1
Quercus michauxii swamp chestnut oak Tree FACW 1 1 3 3
Quercus rubra northern red oak Tree FACU
Salix nigra black willow Tree OBL 2 2 1 1 1 1 2 2 1 1 2 2
Salix sericea silky willow Shrub OBL 2 2 2 2 1 1 1 1 3 3
Sambucus canadensis American black elderberry Tree 1 1 1 1
Ulmus americana American elm Tree FACW 1 1 1 1 2 2 1 1 1 1
Ulmus rubra slippery elm Tree FAC 1 1 1 1
Sum 12 12 12 12 8 8 16 16 8 8 14 14
12 12 8 16 8 14
486 486 324 648 324 567
6 7 7 10 6 8
25 33 25 19 25 21
4 2 3 3 1 2
0 0 0 0 0 0
12 12 8 16 8 14
486 486 324 648 324 567
6 7 7 10 6 8
25 33 25 19 25 21
4 2 3 3 1 2
0 0 0 0 0 0
Planted Acreage
Date of Initial Plant
Date of Current Survey
Plot size (ACRES)
1). Bolded species are proposed for the current monitoring year, italicized species are not approved, and a regular font indicates that the species has been approved.
2). The "Species Included in Approved Mitigation Plan" section contains only those species that were included in the original approved mitigation plan. The "Post Mitigation Plan Species" section includes species that are being proposed through a mitigation plan addendum for the current monitoring
year (bolded) , species that have been approved in prior monitoring years through a mitigation plan addendum (regular font), and species that are not approved (italicized).
3). The "Mitigation Plan Performance Standard" section is derived only from stems included in the original mitigation plan, whereas the "Post Mitigation Plan Performance Standard" includes data from mitigation plan approved, post mitigation plan approved, and proposed stems.
Species
Included in
Approved
Mitigation Plan
Veg Plot 5 F Veg Plot 6 FIndicator
Status
Veg Plot 1 F Veg Plot 2 F Veg Plot 3 F Veg Plot 4 FScientific Name Common Name Tree/
Shrub
Average Plot Height (ft.)
% Invasives
Mitigation Plan
Performance
Standard
Post Mitigation
Plan
Performance
Standard
Dominant Species Composition (%)
Average Plot Height (ft.)
% Invasives
Current Year Stem Count
Stems/Acre
Species Count
Performance Standard
Current Year Stem Count
Stems/Acre
Species Count
Dominant Species Composition (%)
Table 6. Vegetation Plot Data
Dynamite Creek Mitigation Site
DMS Project No. 100125
Monitoring Year 2 - 2023
15.4
2022-01-11
2023-08-02
0.0247
Veg Plot 12 R Veg Plot 13 R
Planted Total Planted Total Planted Total Planted Total Planted Total Total Total
Acer negundo boxelder Tree FAC 1 1 1 1 2 2 7 3
Alnus serrulata hazel alder Tree OBL 1 1 1 1 1 1 1
Betula nigra river birch Tree FACW 1 1 1 1 2 2 1 1
Celtis laevigata sugarberry Tree FACW 1 1 3 1
Diospyros virginiana common persimmon Tree FAC 2
Fraxinus pennsylvanica green ash Tree FACW 1
Platanus occidentalis American sycamore Tree FACW 3 3 3 3 1 1 4 4 5 6
Quercus lyrata overcup oak Tree OBL 1 1 1 1
Quercus michauxii swamp chestnut oak Tree FACW 1 1 1 1
Quercus rubra northern red oak Tree FACU 1 1
Salix nigra black willow Tree OBL 1 1 1 1 2 2 1 1 1 1 2 2
Salix sericea silky willow Shrub OBL 1 1 1 1 2 2 1 1 2 1
Sambucus canadensis American black elderberry Tree 2 2 1 1 1 1
Ulmus americana American elm Tree FACW 2 2 1 1 1 1 1
Ulmus rubra slippery elm Tree FAC 1 1 1 1 1 1
Sum 10 10 8 8 12 12 8 8 13 13 21 16
10 8 12 8 13 21 16
405 324 486 324 526 850 648
7 7 7 8 9 7 7
30 25 25 12 31 33 38
2 3 3 2 4 3 3
0 0 0 0 0 0 0
10 8 12 8 13 21 16
405 324 486 324 526 850 648
7 7 7 8 9 7 7
30 25 25 12 31 33 38
2 3 3 2 4 3 3
0 0 0 0 0 0 0
Performance Standard
Current Year Stem Count
Stems/Acre
Species Count
Dominant Species Composition (%)
Average Plot Height (ft.)
% Invasives
Mitigation Plan
Performance
Standard
Post Mitigation
Plan
Performance
Standard
Dominant Species Composition (%)
Average Plot Height (ft.)
% Invasives
Current Year Stem Count
Stems/Acre
Species Count
1). Bolded species are proposed for the current monitoring year, italicized species are not approved, and a regular font indicates that the species has been approved.
2). The "Species Included in Approved Mitigation Plan" section contains only those species that were included in the original approved mitigation plan. The "Post Mitigation Plan Species" section includes species that are being proposed through a mitigation plan addendum for the current
monitoring year (bolded) , species that have been approved in prior monitoring years through a mitigation plan addendum (regular font), and species that are not approved (italicized).
3). The "Mitigation Plan Performance Standard" section is derived only from stems included in the original mitigation plan, whereas the "Post Mitigation Plan Performance Standard" includes data from mitigation plan approved, post mitigation plan approved, and proposed stems.
Species
Included in
Approved
Mitigation Plan
Veg Plot 7 FIndicator
StatusScientific Name Common Name Tree/
Shrub
Veg Plot 10 F Veg Plot 11 FVeg Plot 8 F Veg Plot 9 F
Planted Acreage
Date of Initial Plant
Date of Current Survey
Plot size (ACRES)
Table 7. Vegetation Performance Standards Summary Table
Dynamite Creek Mitigation Site
DMS Project No. 100125
Monitoring Year 2 - 2023
Stems/Ac.Av. Ht. (ft)# Species % Invasives Stems/Ac.Av. Ht. (ft)# Species % Invasives Stems/Ac.Av. Ht. (ft)# Species % Invasives
486 4 6 0 486 2 7 0 324 3 7 0
486 2 6 0 526 2 8 0 486 2 8 0
526 2 6 0 526 2 8 0 607 2 9 0
Stems/Ac.Av. Ht. (ft)# Species % Invasives Stems/Ac.Av. Ht. (ft)# Species % Invasives Stems/Ac.Av. Ht. (ft)# Species % Invasives
648 3 10 0 324 1 6 0 567 2 8 0
648 2 10 0 445 2 7 0 688 2 9 0
648 2 10 0 567 2 8 0 729 2 9 0
Stems/Ac.Av. Ht. (ft)# Species % Invasives Stems/Ac.Av. Ht. (ft)# Species % Invasives Stems/Ac.Av. Ht. (ft)# Species % Invasives
405 2 7 0 324 3 7 0 486 3 7 0
445 1 7 0 486 2 7 0 526 2 8 0
607 2 9 0 607 2 9 0 648 2 11 0
Stems/Ac.Av. Ht. (ft)# Species % Invasives Stems/Ac.Av. Ht. (ft)# Species % Invasives Stems/Ac.Av. Ht. (ft)# Species % Invasives
324 2 8 0 526 4 9 0 850 3 7 0
526 2 12 0 607 2 9 0 364 2 4 0
526 2 12 0 607 2 9 0 567 2 10 0
Stems/Ac.Av. Ht. (ft)# Species % Invasives
648 3 7 0
364 2 6 0
567 2 9 0
*Each monitoring year represents a different plot for the random vegetation plot "groups". Random plots are denoted with an R, and fixed plots with an F.
Monitoring Year 1
Monitoring Year 0
Monitoring Year 0
Monitoring Year 5
Monitoring Year 3
Monitoring Year 2
Veg Plot 3 F
Monitoring Year 7
Veg Plot 4 F Veg Plot 5 F
Monitoring Year 0
Monitoring Year 5
Monitoring Year 3
Monitoring Year 2
Monitoring Year 1
Veg Plot 6 F
Monitoring Year 7
Monitoring Year 5
Monitoring Year 3
Veg Plot 1 F Veg Plot 2 F
Monitoring Year 7
Veg Plot 7 F Veg Plot 8 F
Veg Plot Group 12 R
Monitoring Year 7
Monitoring Year 2
Monitoring Year 1
Monitoring Year 0
Veg Plot 9 F
Monitoring Year 5
Monitoring Year 3
Monitoring Year 2
Monitoring Year 1
Monitoring Year 0
Veg Plot Group 13 R
Monitoring Year 7
Veg Plot 10 F Veg Plot 11 F
Monitoring Year 5
Monitoring Year 3
Monitoring Year 2
Monitoring Year 1
APPENDIX C. Stream Geomorphology Data
Cross-Section Plots
Dynamite Creek Mitigation Site
Appendix C: Stream Geomorphology Data – Cross-Section Plots
Downstream (03/07/2023)
MY0 MY1 MY2 MY3 MY5 MY7
Bankfull Elevation - Based
on AB-Bankfull Area N/A N/A N/A
Bank Height Ratio - Based
on AB-Bankfull Area N/A N/A N/A
Thalweg Elevation 539.89 540.09 540.11
LTOB Elevation 541.32 541.29 541.31
LTOB Max Depth 1.43 1.20 1.20
LTOB Cross-Sectional Area 7.39 5.62 5.86
Dynamite Creek Mitigation Site
Appendix C: Stream Geomorphology Data – Cross-Section Plots
Downstream (03/07/2023)
MY0 MY1 MY2 MY3 MY5 MY7
Bankfull Elevation - Based
on AB-Bankfull Area 540.96 541.02 541.03
Bank Height Ratio - Based
on AB-Bankfull Area 1.00 0.92 0.92
Thalweg Elevation 540.11 540.16 540.14
LTOB Elevation 540.96 540.95 540.96
LTOB Max Depth 0.85 0.79 0.82
LTOB Cross-Sectional Area 3.53 3.08 3.04
Dynamite Creek Mitigation Site
Appendix C: Stream Geomorphology Data – Cross-Section Plots
Downstream (03/07/2023)
MY0 MY1 MY2 MY3 MY5 MY7
Bankfull Elevation - Based
on AB-Bankfull Area 528.72 528.80 528.78
Bank Height Ratio - Based
on AB-Bankfull Area 1.00 0.93 0.92
Thalweg Elevation 527.57 527.62 527.59
LTOB Elevation 528.72 528.71 528.69
LTOB Max Depth 1.15 1.09 1.10
LTOB Cross-Sectional Area 4.45 3.90 3.84
Dynamite Creek Mitigation Site
Appendix C: Stream Geomorphology Data – Cross-Section Plots
Downstream (03/07/2023)
MY0 MY1 MY2 MY3 MY5 MY7
Bankfull Elevation - Based
on AB-Bankfull Area 511.85 511.97 511.97
Bank Height Ratio - Based
on AB-Bankfull Area 1.00 1.09 1.02
Thalweg Elevation 510.22 510.30 510.34
LTOB Elevation 511.85 512.09 512.00
LTOB Max Depth 1.62 1.79 1.66
LTOB Cross-Sectional Area 11.45 12.80 11.80
Dynamite Creek Mitigation Site
Appendix C: Stream Geomorphology Data – Cross-Section Plots
Downstream (03/07/2023)
MY0 MY1 MY2 MY3 MY5 MY7
Bankfull Elevation - Based
on AB-Bankfull Area N/A N/A N/A
Bank Height Ratio - Based
on AB-Bankfull Area N/A N/A N/A
Thalweg Elevation 505.25 505.57 505.51
LTOB Elevation 507.54 507.62 507.57
LTOB Max Depth 2.29 2.05 2.06
LTOB Cross-Sectional Area 11.01 9.74 8.74
Dynamite Creek Mitigation Site
Appendix C: Stream Geomorphology Data – Cross-Section Plots
Downstream (03/07/2023)
MY0 MY1 MY2 MY3 MY5 MY7
Bankfull Elevation - Based
on AB-Bankfull Area 507.42 507.56 507.55
Bank Height Ratio - Based
on AB-Bankfull Area 1.00 0.92 0.93
Thalweg Elevation 506.50 506.63 506.66
LTOB Elevation 507.42 507.49 507.49
LTOB Max Depth 0.92 0.86 0.83
LTOB Cross-Sectional Area 4.06 3.51 3.57
Dynamite Creek Mitigation Site
Appendix C: Stream Geomorphology Data – Cross-Section Plots
Downstream (03/07/2023)
MY0 MY1 MY2 MY3 MY5 MY7
Bankfull Elevation - Based
on AB-Bankfull Area 499.09 499.18 499.14
Bank Height Ratio - Based
on AB-Bankfull Area 1.00 0.92 0.90
Thalweg Elevation 497.61 497.67 497.72
LTOB Elevation 499.09 499.06 499.00
LTOB Max Depth 1.47 1.39 1.28
LTOB Cross-Sectional Area 8.84 7.51 7.24
Dynamite Creek Mitigation Site
Appendix C: Stream Geomorphology Data – Cross-Section Plots
Downstream (03/07/2023)
MY0 MY1 MY2 MY3 MY5 MY7
Bankfull Elevation - Based
on AB-Bankfull Area N/A N/A N/A
Bank Height Ratio - Based
on AB-Bankfull Area N/A N/A N/A
Thalweg Elevation 494.75 494.79 494.74
LTOB Elevation 498.59 498.51 498.52
LTOB Max Depth 3.79 3.72 3.78
LTOB Cross-Sectional Area 23.62 20.38 21.13
Dynamite Creek Mitigation Site
Appendix C: Stream Geomorphology Data – Cross-Section Plots
Downstream (03/07/2023)
MY0 MY1 MY2 MY3 MY5 MY7
Bankfull Elevation - Based
on AB-Bankfull Area 497.58 497.68 497.68
Bank Height Ratio - Based
on AB-Bankfull Area 1.00 0.99 0.99
Thalweg Elevation 496.05 496.11 496.12
LTOB Elevation 497.58 497.66 497.66
LTOB Max Depth 1.53 1.55 1.54
LTOB Cross-Sectional Area 9.61 9.36 9.34
Table 8. Baseline Stream Data Summary
Dynamite Creek Mitigation Site
DMS Project No. 100125
Monitoring Year 2 - 2023
Parameter
Riffle Only Min Max n Min Max Min Max n
Bankfull Width (ft)1 1
Floodprone Width (ft)1 1
Bankfull Mean Depth (ft)1 1
Bankfull Max Depth (ft)1 1
Bankfull Cross Sectional Area (ft2)1 1
Width/Depth Ratio 1 1
Entrenchment Ratio 1 1
Bank Height Ratio 1 1
Max particle size (mm) mobilized at bankfull
Rosgen Classification
Bankfull Discharge (cfs)1
Sinuosity
Water Surface Slope (ft/ft)1
Other
Parameter
Riffle Only Min Max n Min Max Min Max n
Bankfull Width (ft)1 1
Floodprone Width (ft)1 1
Bankfull Mean Depth (ft)1 1
Bankfull Max Depth (ft)1 1
Bankfull Cross Sectional Area (ft2)1 1
Width/Depth Ratio 1 1
Entrenchment Ratio 1 1
Bank Height Ratio 1 1
Max particle size (mm) mobilized at bankfull
Rosgen Classification
Bankfull Discharge (cfs)
Sinuosity
Water Surface Slope (ft/ft)0.0120 0.0300 1
Other
Parameter
Riffle Only Min Max n Min Max Min Max n
Bankfull Width (ft)1 1
Floodprone Width (ft)1 1
Bankfull Mean Depth (ft)1 1
Bankfull Max Depth (ft)1 1
Bankfull Cross Sectional Area (ft2)1 1
Width/Depth Ratio 1 1
Entrenchment Ratio 1 1
Bank Height Ratio 1 1
Max particle size (mm) mobilized at bankfull
Rosgen Classification
Bankfull Discharge (cfs)
Sinuosity
Water Surface Slope (ft/ft)0.0090 0.0140 1
Other
1A light touch approach was used on Reach 5, only short sections of work were done without full design parameters.
0.8
10.3
16.0 N/A 14.4
1.70
E4 N/A E4
1.0
---------
1.3 N/A 6.9
N/A 1.70
2.6
0.0116
N/A N/A N/A
N/A
0.8 1.6
5.3 N/A 11.4
N/A
14.5 N/A 10.9
11 N/A 77
0.6 N/A 1.0
PRE-EXISTING
CONDITIONS
67
E4 B4/C4
5.3
Dynamite Creek Reach 2
90
>2.2
6.7
DESIGN MONITORING BASELINE
(MY0)
6.1
12.6
3.0
0.5
90
0.5
0.9
3.5
12.7
---
Dynamite Creek Reach 3
7.8
9
0.4
40
7.0
>2.2
10.9
5.8
1.0
0.5
3.1 4.5
B4/C4 B4/C4
10.5 9.2 9.0
70 40 40
4.2
6.6
0.7
1.0
3.1
1.00
C4
19.5
1.2
5.6
6.0
1.6
---
8.8
1.30 1.10
40
0.0155
---
1.0
40
13.4
1.0
B4/C4
1.2
8.8
1.10
0.0177
40
0.0270
3.0
N/A
0.7
1.0
0.0192
13.6
0.5
------
Dynamite Creek Reach 51
8.7 N/A 11.1
0.6
6.4
---
1.10 1.10
0.0253
Table 8. Baseline Stream Data Summary
Dynamite Creek Mitigation Site
DMS Project No. 100125
Monitoring Year 2 - 2023
Parameter
Riffle Only Min Max n Min Max Min Max n
Bankfull Width (ft)1 1
Floodprone Width (ft)1 1
Bankfull Mean Depth (ft)1 1
Bankfull Max Depth (ft)1 1
Bankfull Cross Sectional Area (ft2)1 1
Width/Depth Ratio 1 1
Entrenchment Ratio 1 1
Bank Height Ratio 1 1
Max particle size (mm) mobilized at bankfull
Rosgen Classification
Bankfull Discharge (cfs)1
Sinuosity
Water Surface Slope (ft/ft)1
Other
Parameter
Riffle Only Min Max n Min Max Min Max n
Bankfull Width (ft)1 12.3 12.5 2
Floodprone Width (ft)1 300 473 2
Bankfull Mean Depth (ft)1 0.7 0.8 2
Bankfull Max Depth (ft)1 1.5 1.5 2
Bankfull Cross Sectional Area (ft2)1 8.8 9.6 2
Width/Depth Ratio 1 16.3 17.1 2
Entrenchment Ratio 1 23.2 37.8 2
Bank Height Ratio 1 2
Max particle size (mm) mobilized at bankfull
Rosgen Classification
Bankfull Discharge (cfs)1
Sinuosity
Water Surface Slope (ft/ft)1
Other
PRE-EXISTING
CONDITIONS DESIGN MONITORING BASELINE
(MY0)
Dynamite Creek Reach 6
8.3 8.5 8.6
11.4 >19
0.9 0.7
1.1
7.2 5.7
1.1
9.2 12.6
1.4 >2.2
2.9 1.01.0
51 28 28
E4 C4 C4
10.99.9
15.4 15.5
1.30 1.30 1.30
22.2
0.0094
17.8 17.8
C5 E4 E4
0.0074
---------
Dynamite Creek Reach 7
---------
0.00303
0.0093
24.1 24.0
1.00 1.10 1.10
39
0.5
0.9
4.1
18.0
4.6
12.7
>2.2
7.6
>2.2
>500
0.9
2.0
>24
0.9
1.01.0
33.3
1.4
1.0
0.0470
12.8 9.4
0.0043
18
Dynamite Creek Mitigation Site
DMS Project No. 100125
MY0 MY1 MY2 MY3 MY5 MY7 MY0 MY1 MY2 MY3 MY5 MY7 MY0 MY1 MY2 MY3 MY5 MY7
Bankfull Elevation (ft) - Based on AB-Bankfull1 Area N/A N/A N/A 540.96 541.02 541.03 528.72 528.80 528.78
Bank Height Ratio - Based on AB Bankfull1 Area N/A N/A N/A 1.00 0.92 0.92 1.00 0.93 0.92
Thalweg Elevation (ft)539.89 540.09 540.11 540.11 540.16 540.14 527.57 527.62 527.59
LTOB2 Elevation (ft)541.32 541.29 541.31 540.96 540.95 540.96 528.72 528.71 528.69
LTOB2 Max Depth (ft)1.43 1.20 1.20 0.85 0.79 0.82 1.15 1.09 1.10
LTOB2 Cross Sectional Area (ft2)7.39 5.62 5.86 3.53 3.08 3.04 4.45 3.90 3.84
MY0 MY1 MY2 MY3 MY5 MY7 MY0 MY1 MY2 MY3 MY5 MY7 MY0 MY1 MY2 MY3 MY5 MY7
Bankfull Elevation (ft) - Based on AB-Bankfull1 Area 511.85 511.97 511.97 N/A N/A N/A 507.42 507.56 507.55
Bank Height Ratio - Based on AB Bankfull1 Area 1.00 1.09 1.02 N/A N/A N/A 1.00 0.92 0.93
Thalweg Elevation (ft)510.22 510.30 510.34 505.25 505.57 505.51 506.50 506.63 506.66
LTOB2 Elevation (ft)511.85 512.09 512.00 507.54 507.62 507.57 507.42 507.49 507.49
LTOB2 Max Depth (ft)1.62 1.79 1.66 2.29 2.05 2.06 0.92 0.86 0.83
LTOB2 Cross Sectional Area (ft2)11.45 12.80 11.80 11.01 9.74 8.74 4.06 3.51 3.57
MY0 MY1 MY2 MY3 MY5 MY7 MY0 MY1 MY2 MY3 MY5 MY7 MY0 MY1 MY2 MY3 MY5 MY7
Bankfull Elevation (ft) - Based on AB-Bankfull1 Area 499.09 499.18 499.14 N/A N/A N/A 497.58 497.68 497.68
Bank Height Ratio - Based on AB Bankfull1 Area 1.00 0.92 0.90 N/A N/A N/A 1.00 0.99 0.99
Thalweg Elevation (ft)497.61 497.67 497.72 494.75 494.79 494.74 496.05 496.11 496.12
LTOB2 Elevation (ft)499.09 499.06 499.00 498.59 498.51 498.52 497.58 497.66 497.66
LTOB2 Max Depth (ft)1.47 1.39 1.28 3.79 3.72 3.78 1.53 1.55 1.54
LTOB2 Cross Sectional Area (ft2)8.84 7.51 7.24 23.62 20.38 21.13 9.61 9.36 9.34
1Bank Height Ratio (BHR) takes the As-built bankful area as the basis for adjusting each subsequent years bankfull elevation.
Monitoring Year 2 - 2023
Cross-Section 9 (Riffle)
Dynamite Creek Reach 7
Cross-Section 8 (Pool)
Table 9. Cross-Section Morphology Monitoring Summary
Cross-Section 1 (Pool)Cross-Section 2 (Riffle)Cross-Section 3 (Riffle)
Cross-Section 6 (Riffle)
Dynamite Creek Reach 2 Dynamite Creek Reach 3
Cross-Section 5 (Pool)Cross-Section 4 (Riffle)
2LTOB Area and Max depth - These are based on the LTOB elevation for each years survey (The same elevation used for the LTOB in the BHR calculation). Area below the LTOB elevation will be used and tracked for each year as above. The
difference between the LTOB elevation and the thalweg elevation (same as in the BHR calculation) will be recroded and tracked above as LTOB max depth.
Dynamite Creek Reach 5 Dynamite Creek Reach 6
Cross-Section 7 (Riffle)
APPENDIX D. Hydrology Data
Reach MY1 (2022)MY2 (2023)*MY3 (2024)MY4 (2025)MY5 (2026)MY6 (2027)MY7 (2028)
3/12/2022 2/17/2023
8/22/2022
12/22/2022
*Data was collected 1/1/2023 to 11/16/2023. Data from the remainder of MY2 will be updated in MY3.
MY1 (2022)MY2 (2023)MY3 (2024)MY4 (2025)MY5 (2026)MY6 (2027)MY7 (2028)
Annual Precipitation
Total 46.33 in 33.55 in*
30 Year Average Precip
WETS 30th Percentile 41.44 in 41.83 in
30 Year Average Precip
WETS 70th Percentile 50.51 in 50.48 in
Annual Precipitation
Compared to Normal Normal *
30 Year Average Precipitation Source: Eden Station, Rockingham County, NC, AgACIS (Approximately 1.9 miles from Site)
*Annual precipitation was collected 1/1/2023 to 11/16/2023. Data from the remainder of MY2 will be updated in MY3.
Annual Precipitation Source: Eden COOP Station, Rockingham County, NC, State Climate Office (Approximately 1.9 miles from Site)
Dynamite Creek Mitigation Site
DMS Project No. 100125
Monitoring Year 2 - 2023
Table 10. Bankfull Events
Dynamite Creek Mitigation Site
DMS Project No. 100125
Monitoring Year 2 - 2023
Table 11. Rainfall Summary
Dynamite Creek
Reach 6 4/30/2023
Recorded Bankfull Events Plot
Monitoring Year 2 - 2023
Dynamite Creek Mitigation Site
DMS Project No. 100125
319 days of consecutive stream flow
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov
0
1
2
3
4
5
6
7
8
506
507
508
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Monitoring Year 2 - 2023
Daily Precipitation Water Level Thalweg Bankfull 30-Day Rolling Precip Total 30th & 70th Percentile
Dynamite Creek: Dynamite Creek Crest Gauge
Table 12. Groundwater Gauge Summary
Dynamite Creek Mitigation Site
Monitoring Year 2 - 2023
MY1 (2022)MY2 (2023)MY3 (2024)MY4 (2025)MY5 (2026)MY6 (2027)MY7 (2028)
1 3 Days
(1.2%)
5 Days
(1.9%)
2 13 Days
(5.0%)
34 Days
(13.1%)
3 3 Days
(1.2%)
5 Days
(1.9%)
4 4 Days
(1.5%)
7 Days
(2.7%)
5 29 Days
(11.2%)
36 Days
(13.9%)
6 4 Days
(1.5%)
6 Days
(2.3%)
7 12 Days
(4.6%)
35 Days
(13.5%)
8 3 Days
(1.2%)
3 Days
(1.2%)
9 8 Days
(3.1%)
52 Days
(20.1%)
10 59 Days
(22.8%)
81 Days
(31.3%)
Gauge Max. Consecutive Hydroperiod (Percentage)
DMS Project No. 100125
Growing Season: 3/1/2023 to 11/14/2023 (258 Days)
Performance Standard: Free groundwater table within 12 inches of the ground surface for 12% (31 days) of the growing season.
Groundwater Gauge Plot
Monitoring Year 2 - 2023
Wetland Re-establishment Area
Dynamite Creek Mitigation Site
DMS Project No. 100125
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov
0
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-70
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Monitoring Year 2 - 2023
Daily Precipitation Gauge #1 Criteria Level Soil Surface 30-Day Rolling Precip Total 30th & 70th Percentile
Dynamite Creek Groundwater Gauge #1
Groundwater Gauge Plot
Monitoring Year 2 - 2023
Wetland Rehabilitation Area
Dynamite Creek Mitigation Site
DMS Project No. 100125
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34 max consecutive days
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov
0
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8
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Monitoring Year 2 - 2023
Daily Precipitation Gauge #2 Criteria Level Soil Surface 30-Day Rolling Precip Total 30th & 70th Percentile
Dynamite Creek Groundwater Gauge #2
Groundwater Gauge Plot
Monitoring Year 2 - 2023
Wetland Re-establishment Area
Dynamite Creek Mitigation Site
DMS Project No. 100125
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov
0
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Monitoring Year 2 - 2023
Daily Precipitation Gauge #3 Criteria Level Soil Surface 30-Day Rolling Precip Total 30th & 70th Percentile
Dynamite Creek Groundwater Gauge #3
Groundwater Gauge Plot
Monitoring Year 2 - 2023
Wetland Re-establishment Area
Dynamite Creek Mitigation Site
DMS Project No. 100125
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7 max consecutive days
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov
0
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Monitoring Year 2 - 2023
Daily Precipitation Gauge #4 Criteria Level Soil Surface 30-Day Rolling Precip Total 30th & 70th Percentile
Dynamite Creek Groundwater Gauge #4
Groundwater Gauge Plot
Monitoring Year 2 - 2023
Wetland Rehabilitation Area
Dynamite Creek Mitigation Site
DMS Project No. 100125
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov
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Monitoring Year 2 - 2023
Daily Precipitation Gauge #5 Criteria Level Soil Surface 30-Day Rolling Precip Total 30th & 70th Percentile
Dynamite Creek Groundwater Gauge #5
Groundwater Gauge Plot
Monitoring Year 2 - 2023
Wetland Re-establishment Area
Dynamite Creek Mitigation Site
DMS Project No. 100125
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov
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Monitoring Year 2 - 2023
Daily Precipitation Gauge #6 Criteria Level Soil Surface 30-Day Rolling Precip Total 30th & 70th Percentile
Dynamite Creek Groundwater Gauge #6
Groundwater Gauge Plot
Monitoring Year 2 - 2023
Wetland Rehabilitation Area
Dynamite Creek Mitigation Site
DMS Project No. 100125
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov
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Monitoring Year 2 - 2023
Daily Precipitation Gauge #7 Criteria Level Soil Surface 30-Day Rolling Precip Total 30th & 70th Percentile
Dynamite Creek Groundwater Gauge #7
Groundwater Gauge Plot
Monitoring Year 2 - 2023
Wetland Rehabilitation Area
Dynamite Creek Mitigation Site
DMS Project No. 100125
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Monitoring Year 2 - 2023
Daily Precipitation Gauge #8 Criteria Level Soil Surface 30-Day Rolling Precip Total 30th & 70th Percentile
Dynamite Creek Groundwater Gauge #8
Groundwater Gauge Plot
Monitoring Year 2 - 2023
Wetland Re-establishment Area
Dynamite Creek Mitigation Site
DMS Project No. 100125
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov
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Monitoring Year 2 - 2023
Daily Precipitation Gauge #9 Criteria Level Soil Surface 30-Day Rolling Precip Total 30th & 70th Percentile
Dynamite Creek Groundwater Gauge #9
Groundwater Gauge Plot
Monitoring Year 2 - 2023
Wetland Rehabilitation Area
Dynamite Creek Mitigation Site
DMS Project No. 100125
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov
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Monitoring Year 2 - 2023
Daily Precipitation Gauge #10 Criteria Level Soil Surface 30-Day Rolling Precip Total 30th & 70th Percentile
Dynamite Creek Groundwater Gauge #10
Soil Temperature Probe Plot
Monitoring Year 2 - 2023
Dynamite Creek Mitigation Site
DMS Project No. 100125
Ja
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Fe
b
Ma
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Ap
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v
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80
90
100
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(
F
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Monitoring Year 2 - 2023
Soil Probe Temperature Criteria Level
Dynamite Creek Soil Temperature Probe
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APPENDIX E. Project Timeline and Contact Info
DMS Project No. 100125
Invasive Vegetation Treatment
In-stream Vegetation Treatment
DMS Project No. 100125
NA
August 2022
As-Built Survey Completed December 2021 December 2021
Planting Completed NA January 2022
August 2022
March 2022
November 2021Construction (Grading) Completed
Baseline Monitoring Document (Year 0)Stream Survey November 2021
Year 1 Monitoring
Vegetation Survey
April 2023
August 2023
Competitive Vegetation Treatment1
In-stream Vegetation Treatment
Invasive Vegetation Treatment May 2023
Easement Encroachment - Vehicle and Cow Access January 2023
January 2022
March 2023
2025
August 2023
June 2022
2024
December 2025
Stream Survey
Stream Survey
Vegetation Survey December 2022August 2022
Stream Survey
December 2024
Year 4 Monitoring
Vegetation SurveyYear 3 Monitoring
December 2023
2024
Vegetation Survey
Year 2 Monitoring
Wildlands Construction
Table 14. Project Contact Table
2028Stream Survey
Vegetation Survey December 2028
Wildlands Engineering, Inc.
Construction Contractor
Raleigh, NC 27609
312 West Millbrook Road, Suite 225
919.851.9986
Designer
Angela Allen, PE
1Herbicide ring sprays and soil amendments around the base of planted stems.
312 West Millbrook Road, Suite 225
Raleigh, NC 27609
Monitoring Year 2 - 2023
Year 6 Monitoring
2026
December 2027
Dynamite Creek Mitigation Site
2028Year 7 Monitoring
Vegetation Survey
2027
Year 5 Monitoring Stream Survey
2026 December 2026
919.851.9986
Jason Lorch
Monitoring Performers Wildlands Engineering, Inc.
Monitoring, POC
February 2021Mitigation Plan Approved NA
Table 13. Project Activity and Reporting History
Activity or Report Data Collection Complete Completion or Scheduled Delivery
Project Instituted NA May 2019
Dynamite Creek Mitigation Site
Monitoring Year 2 - 2023
APPENDIX F. Additional Documentation
Wildlands Engineering, Inc. page 1
Dynamite Creek Mitigation Site
MEETING SUMMARY
MEETING: MY2 IRT Site Walk
Dynamite Creek Mitigation Site
Roanoke 03010103; Rockingham County, NC
DEQ Contract No. 7911
DMS Project No. 100125
USACE ID: 2019-00909
DATE: On-Site Meeting: Thursday, September 28, 2023
Meeting Notes Distributed: Wednesday, October 4, 2023
Attendees
Kim Isenhour, USACE
Casey Haywood, USACE
Travis Wilson, WRC
Maria Polizzi, DWR
Jeremiah Dow, DMS
Danielle Mir, DMS
Hanna Peterman, Wildlands
Jason Lorch, Wildlands
Tasha King, Wildlands
Meeting Notes
• General Site Notes
o USACE would like a sentence added in each yearly monitoring report to discuss mature tree
mortality in the existing forest.
o More live stakes planted along the stream banks on upper reaches in existing forest areas were
requested.
• Dynamite Creek Reach 2
o There was no flow in the lower part of Reach 2 below the utility crossing. This is worrisome
because there is water both above and below this stretch of channel. The IRT would like a flow
gauge to be installed, possibly 2, to document flow on what is marked as a perennial stream.
• Dynamite Creek Reach 4
o While this is a preservation section, the IRT still expects that it will show stability. A tree across the
Dynamite Creek channel near the confluence of UT1 has been holding channel grade. At the time
of the site walk, water was flowing behind the log on the downstream right side of the channel
that could potentially form a headcut. The IRT has requested a photo point be installed at the
confluence to monitor channel stability.
• Dynamite Creek Reach 5
o Wildlands showed the IRT the “light touch” work completed on this enhancement I reach.
Wildlands Engineering, Inc. page 2
Dynamite Creek Mitigation Site
• Dynamite Creek Reach 6
o The IRT confirmed that a resolved driving encroachment will be documented in the Monitoring
Year 2 report.
o The treatment of pasture grass during construction and via ring sprays in MY1 was discussed. Ring
sprays were done around trees along Reach 7 in MY1, but not along Reach 6 where there is
existing mature forest.
• Dynamite Creek Reach 7
o The wetland groundwater well data and next steps were discussed. Wildlands explained plans to
install two extra groundwater well gauges to find the edge between wetlands meeting the
hydrology performance standard and those where credits could be put at risk. The IRT agreed with
this strategy and indicated it was unnecessary to put credits at risk this early in the project life
cycle. Once a couple more years of data have been collected and we are more confident of
groundwater levels in the area, then wetland crediting should be revisited.
• USACE requested a copy of a map showing possible locations for the two extra
groundwater well gauges and a soils map for the area.
• A theory was discussed that since this is in the Dan River floodplain, a layer of sandy
material may have formed at the ground surface. It is possible that these sandy soils are
draining groundwater and making it difficult to maintain a water table near the ground
surface.
o A few small piles of cow poop were noticed in multiple places along Reach 7 and the lower end of
Reach 6 near the bridge. These were likely from young cows gaining access to the conservation
easement. Wildlands will work with the landowner and tenant farmer to keep the cows from
accessing the conservation easement.