20120182 Ver 1_Year 6 Monitoring Report_2020_20201116

ID#* 20120182 Version* 1
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Erin Davis
Initial Review Completed Date 11/16/2020
Mitigation Project Submittal - 11/16/2020
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Contact Name:*
Matthew Reid
Project Information
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ID#:* 20120182
Existing IDY
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r DMS r Mitigation Bank
Hogan Creek
Surry
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Mitigation Monitoring Report
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MONITORING YEAR 6
ANNUAL REPORT

Final

HOGAN CREEK STREAM MITIGATION PROJECT
Surry County, NC
DEQ Contract 6496
DMS Project Number 94708
DWR # 20120182
USACE Action ID SAW-2011-02268
Data Collection Period: February - September 2020
Draft Submission Date: October 19, 2020
Final Submission Date: November 13, 2020

PREPARED FOR:

NC Department of Environmental Quality
Division of Mitigation Services
1652 Mail Service Center
Raleigh, NC 27699-1652

PREPARED BY:

1430 South Mint Street, Suite 104
Charlotte, NC 28203

Phone: [phone]
Fax: [phone]

Wildlands Engineering, Inc.  phone [phone]  fax [phone]  1430 S. Mint Street, # 104  Charlotte, NC 28203

November 13, 2020

Mr. Matthew Reid
Western Project Manager
Division of Mitigation Services
5 Ravenscroft Dr., Suite 102
Asheville, NC 28801

RE: Hogan Creek Stream Mitigation Project
Yadkin River Basin – CU# 03040101
Surry County, North Carolina
NCEEP Project # 94708
Contract No. 6496

Dear Mr. Reid:

Wildlands Engineering, Inc. (Wildlands) has reviewed the Division of Mitigation Services (DMS) comments
from the Draft Monitoring Year 6 report for the Hogan Creek Stream Mitigation Project. The following
Wildlands responses to DMS’s report comments are noted in italics lettering.

DMS comment; MY6 is the final year of monitoring activities for the Hogan Creek Stream Mitigation
Project. The site will be presented to the IRT for regulatory closeout in 2021. Please update the
Executive Summary and Project Overview to acknowledge that MY6 is the final year of monitoring,
success criteria have been met and the site will be presented for closeout in 2021.

Wildlands response; Text in the Executive Summary and Project Overview has been updated to
acknowledge that MY6 is the final year of monitoring, success criteria have been met and the Site will be
presented for closeout in 2021.

DMS comment; Section 1: Project Overview: Third paragraph discusses final design, asbuilt
information and the stream maintenance completed in 2015. Since this information is found in Table 2
and has previously been mentioned in past monitoring reports, please revise this paragraph to focus
on MY6 monitoring and upcoming closeout.

Wildlands response; Text in the third paragraph of the Project Overview has been revised to focus on
MY6 monitoring and upcoming closeout.

DMS comment; 1.2.2 Vegetation Areas of concern and Management Activities: Please add a sentence
stating that additional invasive treatment occurred in May, August and September of 2020.

Wildlands response; Text in Section 1.2.2 has been updated to indicate that invasive treatments occurred
in May, August, and September 2020.

DMS comment; Table 2: Please add Invasive Species Treatment dates: May/Aug/Sep – 2020

Wildlands Engineering, Inc.  phone [phone]  fax [phone]  1430 S. Mint Street, # 104  Charlotte, NC 28203

Wildlands response; The invasive species treatment dates have been added to Table 2.

DMS comment; Thank you for updating the CCPV to reflect the invasive treatment that has occurred
on the site. DMS will continue to have the invasives treated through December 2021.

Wildlands response; Text in Section 1.2.2 has been updated to specify that invasive treatments will
continue through December 2021.

DMS comment; Table 6b and 6c: There are two structures marked as unstable under the “Overall
Integrity” category, but they are not shown on the CCPV or discussed in the stream problem area of
the report. Can you please verify if these are still problems or if they have healed over time? Please
add a call out or mark the location of the structures on the CCPV if they are a problem or remove from
the table.

Wildlands response; Two rootwad structures, one along Hogan Creek Reach 2 near station 37+30 and
the other along UT2 near station 9+50, were noted to have some bank scour at these locations which is
shown on the CCPV. However, upon additional consideration, the overall integrity of these structures has
not been compromised since the bank scour is minor with woody vegetation still established along the
bank. Tables 6b and 6c have been updated to account for this just in the Bank Protection channel sub-
category.

DMS comment; Please include the attached invasive species treatment log in the appendix.

Wildlands response; The invasive species treatment log has been included in the appendix.

DMS comment; As Wildlands has done in the past, please include a response to the comment letter
and how/where the comments were addressed. Please insert this letter directly behind the cover
page in the final deliverables. The IRT has requested that we include this letter with the final
deliverables. The response letter will need to be included with all future monitoring deliverables.

Wildlands response; The comment response letter has been inserted behind the cover page in the final
deliverables.

Enclosed please find one (1) hard copy and one (1) electronic copy on CD of the Final Monitoring Report.
Please contact me at 704-941-9093 if you have any questions.

Sincerely,

Kirsten Y. Gimbert
Project Manager
[e-mail]

Hogan Creek Stream Mitigation Project
Monitoring Year 6 Annual Report - FINAL i
EXECUTIVE SUMMARY
The North Carolina Department of Environmental Quality (NCDEQ) Division of Mitigation Services (DMS)
restored, enhanced, and preserved approximately 9,782 linear feet (LF) of stream channel at the Hogan
Creek Stream Mitigation Site (Site) in Surry County, North Carolina. The restoration project was
developed to fulfill stream mitigation requirements accepted by the DMS for the Upper Yadkin River
Basin 8-digit Hydrologic Unit Code (HUC) 03040101. The Hogan Creek Stream Mitigation Project will net
4,994 stream mitigation credits through a combination of restoration, enhancement I and II, and
preservation.
The Site is within a Targeted Local Watershed (TLW) identified in the Upper Yadkin River Basin
Restoration Priority (RBRP) plan (NCDENR, 2009). The RBRP identified the Candiff Creek/Hogan Creek
14-digit HUC as a TLW due to water quality and habitat impacts from past and present agricultural
practices. Agriculture is the primary land use in the watershed (41% agriculture land cover) and the
RBRP identified non-forested buffers and livestock operations as major stressors to water quality. There
are twenty-six permitted animal operations, and twenty-five (25%) of the watershed has non-forested
riparian buffers. The site assessment phase of the project identified other stressors as well, including
bank erosion, sediment deposition, disconnection of the streams and floodplains, and exotic plant
species. The project was identified as an opportunity to improve water quality and aquatic and
terrestrial habitats within the TLW. In addition to being within an TLW, the upper Hogan Creek
subwatershed has been identified as a priority area for stream restoration and agricultural best
management practices (BMPs) as part of DMS’s initial Ararat River Local Watershed Planning (LWP)
effort (EcoEngineering, 2008).
The final design was completed in November of 2012. Construction activities and as-built surveys were
completed in December of 2014. Planting of the Site took place in March of 2015. Baseline monitoring
efforts began in May of 2015, and Monitoring Year (MY) 1 efforts began in October of 2015. The region
experienced an unusually high amount of precipitation during fall/winter 2015. The storm events
damaged several areas on Hogan Creek Reach 1 and Reach 2 that were subsequently repaired in
December of 2015. Beginning in 2016, monitoring has been conducted annually with MY6 activities
completed in September of 2020.
To address previously noted areas of bank erosion, a repair along Hogan Creek was completed in March
2019. Approximately 980 feet of live lifts were installed and a constructed riffle was repaired on Hogan
Reach 2. Transplants were used where possible, and disturbed areas were replanted with bare roots,
live stakes and permanent/temporary seeding. Construction began in February 2019 and finished up
March 2019. Following the Interagency Review Team (IRT) credit release site walk in MY4, an additional
year of monitoring was requested to further assess the repairs.
The Hogan Creek Stream Mitigation Project has met monitoring success criteria for vegetation,
geomorphology, and hydrology performance standards. The MY6 vegetation survey resulted in an
average stem density of 425 planted stems per acre and is meeting the final success criterion of 260
stems per acre with all six plots (100%) individually meeting this requirement. The MY6 vegetation
monitoring and visual assessment revealed that the invasive treatments are working to significantly
reduce the areas of invasive plant populations. Geomorphic surveys and visual assessments indicate that
project streams, including recently stabilized areas along Hogan Creek Reach 1 and Reach 2, appear
stable and functioning as intended. The hydrology performance standard of two recorded bankfull
events in separate monitoring years was met in MY2 for Hogan Creek and UT2. MY6 is the final year of
monitoring and since project success criteria has been met, the Site will be presented for closeout in
2021.

Hogan Creek Stream Mitigation Project
Monitoring Year 6 Annual Report - FINAL ii
HOGAN CREEK STREAM MITIGATION PROJECT
Year 6 Monitoring Report
TABLE OF CONTENTS
Section 1: PROJECT OVERVIEW .....................................................................................................1-1
1.1 Project Goals and Objectives ..................................................................................................... 1-1
1.2 Monitoring Year 6 Data Assessment .......................................................................................... 1-2
1.2.1 Vegetation Assessment ...................................................................................................... 1-2
1.2.2 Vegetation Areas of Concern and Management Activity .................................................. 1-2
1.2.3 Stream Assessment ............................................................................................................ 1-3
1.2.4 Stream Areas of Concern and Management Activity ......................................................... 1-3
1.2.5 Hydrology Assessment ....................................................................................................... 1-3
1.3 Monitoring Year 6 Summary ...................................................................................................... 1-4
Section 2: METHODOLOGY............................................................................................................2-1
Section 3: REFERENCES .................................................................................................................3-1

APPENDICES
Appendix A General Tables and Figures
Figure 1 Project Vicinity Map
Figure 2 Project Component/Asset Map
Table 1 Project Components and Mitigation Credits
Table 2 Project Activity and Reporting History
Table 3 Project Contacts Table
Table 4 Project Baseline Information and Attributes
Table 5 Monitoring Component Summary
Appendix B Visual Assessment Data
Figures 3.0-3.3 Current Condition Plan View Maps
Table 6a-d Visual Stream Morphology Stability Assessment Table
Table 7 Vegetation Condition Assessment Table
Stream Photographs
Vegetation Photographs
Appendix C Vegetation Plot Data
Table 8 Vegetation Plot Criteria Attainment
Table 9 CVS Vegetation Plot Metadata
Table 10 Planted and Total Stem Counts
Appendix D Morphological Summary Data and Plots
Table 11a-c Baseline Stream Data Summary
Table 12 Morphology and Hydraulic Summary (Dimensional Parameters – Cross-Section)
Table 13a-c Monitoring Data - Stream Reach Data Summary
Cross-Section Plots with Annual Overlays
Longitudinal Profiles with Annual Overlays
Pebble Count Plots with Annual Overlays
Appendix E Hydrology Summary Data and Plots
Table 14 Verification of Bankfull Events
Monthly Rainfall Data
Appendix F Invasive Species Treatment Logs

Hogan Creek Stream Mitigation Project
Monitoring Year 6 Annual Report - FINAL 1-1
Section 1: PROJECT OVERVIEW
The Site was implemented under a design-bid-build contract in Surry County, NC. The Site is located in
the Yadkin River Basin; eight-digit Hydrologic Unit Code (HUC) 03040101 and the 14-digit HUC
03040101110060 (Figure 1). Located in the Piedmont physiographic province (NCGS 2004), the project
watershed primarily includes agricultural land cover. The drainage area for the lower end of Hogan
Creek is 1,514 acres. Hogan Creek is a main tributary to the Yadkin River in the Upper Yadkin River Basin.
The Site is located approximately 2 miles south of NC 268 on Miller Gap Road, which bisects the project
at the triple box culvert over Hogan Creek. A vicinity map is included in Appendix A as Figure 1.
The NCDEQ DMS restored, enhanced, and preserved approximately 9,782 LF of Hogan Creek and three
unnamed tributaries (UTs), provided livestock fencing and alternative water sources to keep livestock
out of the streams, removed invasive plant species across the project, established native riparian buffer,
and preserved relatively un-impacted forested streams. The restoration project was developed to fulfill
stream mitigation requirements accepted by the DMS for the Upper Yadkin River Basin.
Mitigation work within the Site included restoring and enhancing 4,109 LF and preserving 5,673 LF of
stream. The Hogan Creek Mitigation Project will net 4,994 stream mitigation credits through a
combination of restoration, enhancement I and II, and preservation. To further assess the repairs along
Hogan Creek that were completed in March 2019, an additional year of monitoring (MY6) was requested
by the IRT. MY6 is the final year of monitoring and activities were completed in September of 2020. All
success criteria have been met in MY6 and the Site will be presented for closeout in 2021.
More detailed information related to the project activity, history, and contacts can be found in Appendix
A, Tables 1 and 2. Directions and a map of the Site are provided in Figure 1. Project components are
illustrated in the Project Component Map (Figure 2) while Table 1 outlines the project component and
mitigation credit information for the Site. This report documents the results of the MY6 efforts.
1.1 Project Goals and Objectives
Prior to construction activities, non-forested buffers and livestock operations were identified as major
stressors to water quality within the watershed. The site assessment phase of the project identified
other stressors as well, including bank erosion, sediment deposition, disconnection of the streams and
floodplains, and exotic plant species. The majority of the project area was utilized as a cattle operation
for over fifty years. Cattle accessed Hogan Creek and the downstream reach of UT2 exacerbating bank
erosion and allowing direct nutrient and fecal inputs to the streams. Deforested riparian buffers and
levee construction along Hogan Creek and UTs also contributed to channel degradation. Table 11 in
Appendix D present the pre-restoration conditions in detail.
This mitigation site is providing numerous ecological benefits within the Yadkin River Basin. The project
goals identified in the Mitigation Plan (Confluence, 2012) include:
• Improve water quality in Hogan Creek and the UTs through reductions in sediment and nutrient
inputs from local sources;
• Create conditions for dynamic equilibrium of water and sediment movement between the
supply reaches and project reaches;
• Promote floodwater attenuation and secondary functions associated with more frequent and
extensive floodwater contact times;
• Improve in-stream habitat by increasing the diversity of bedform features;
• Enhance and protect native riparian vegetation communities; and

Hogan Creek Stream Mitigation Project
Monitoring Year 6 Annual Report - FINAL 1-2
• Reduce fecal, nutrient, and sediment loads to project streams by promoting and implementing
livestock best management practices.
The project objectives have been defined as follows:
• Restoration of the dimension, pattern, profile of 684 LF of Hogan Creek Reach 1, 962 LF of
Hogan Creek Reach 2, 555 LF of UT2, and 292 LF of UT3;
• Restoration of the dimension and profile (Enhancement I) of 1,200 LF of Hogan Creek Reach 1;
• Limited channel work coupled with livestock exclusion and/or invasive species control
(Enhancement II) on 66 LF of UT1 and 350 LF of UT2;
• Livestock exclusion fencing and alternative water source installations;
• Invasive plant species control measures across the entire project wherever necessary; and
• Preservation of approximately 5,673 LF relatively un-impacted forested streams in a permanent
conservation easement.
1.2 Monitoring Year 6 Data Assessment
Annual monitoring was conducted between February and September 2020 to assess the condition of the
project. The stream restoration success criteria for the Site follows the approved performance standards
presented in the Hogan Creek Stream Mitigation Plan (Confluence, 2012).
1.2.1 Vegetation Assessment
A total of 6 vegetation monitoring plots were established during the baseline monitoring within the
project easement using standard 10 by 10 meter or 5 by 20 meter plots. Please refer to Figures 3.0-3.3
in Appendix B for the vegetation monitoring locations. The final vegetation success criterion is the
survival of 260 planted stems per acre in the riparian corridor along restored and enhanced reaches at
the end of year five of the monitoring period.
The MY6 vegetation survey was completed in August 2020. The data indicate an average stem density of
425 planted stems per acre for the Site. The Site is meeting the final requirement of 260 stems per acre,
with all plots (100%) individually meeting this requirement. Vegetation Plot 2 has an increased density
compared to last year and has met the density success criterion due to supplemental planting that
occurred in 2019 associated with the stream repair areas along Hogan Creek. In other plots, stems that
were previously missing in MY5 were found this year. Therefore, the site has an overall increased stem
density of about 8%.
A majority of the living planted stems (94%) scored a vigor of 3 or 4, indicating that they are likely to
survive. Approximately 4% of the planted stems scored a vigor of 2, indicating fair plant health with
some damage present. Observed damage was from vine strangulation, suffocation from dense
herbaceous cover, or other unknown factors. The Site is developing a healthy tree canopy, with an
overall average stem height of approximately 16.5 feet. Of the planted species, sycamore and river birch
trees have the highest average stem height by far but even the slower growing species such as
persimmon, black gum, and willow oak are averaging heights of over 7.5 feet. Desirable volunteer
species such as tulip poplar, spice bush, and black cherry are filling in the understory of these planted
areas. Please refer to Appendix B for vegetation plot photographs and Appendix C for vegetation data
tables.
1.2.2 Vegetation Areas of Concern and Management Activity
MY6 visual assessments indicate that invasive plant populations have been reduced by ongoing invasive
treatments. Small areas of invasive plant populations are still present within the conservation easement.
These species include: kudzu (Pueraria montana), Chinese privet (Ligustrum sinense), Japanese

Hogan Creek Stream Mitigation Project
Monitoring Year 6 Annual Report - FINAL 1-3
honeysuckle (Lonicera japonica), multiflora rose (Rosa multiflora), mimosa tree (Albizia julibrissin), and
tree of heaven (Ailanthus altissima). DMS contracted with a provider for ongoing invasive species
treatments which will continue through December 2021. In 2020, additional invasive treatment
occurred in May, August, and September. There was about a 50% reduction in invasive areas of concern
compared to last year with less than 1% of the easement acreage currently affected by invasive species.
Current vegetation areas of concern are shown in Figure 3.0-3.3 of Appendix B.
1.2.3 Stream Assessment
Morphological surveys for MY6 were conducted in April and June 2020. The surveyed longitudinal
profile data illustrates that bedform features are maintaining lateral and vertical stability for the
majority of the surveyed reaches. Profile dimensions for Hogan Creek and UT2 show little change
between MY5 and MY6. Along Hogan Creek Reach 2 (around station 37+25), the previously observed
bed scour downstream of a log vane has maintained stability and created desirable pool habitat within
the meander bend. Please refer to Appendix D for longitudinal profiles with annual overlays and Table
13a-c for stream reach summaries.
Overall, cross-section data throughout the Site is demonstrating stable bankfull dimensions. When
occurring, adjustments are minor in comparison to baseline conditions and seem to be trending towards
increased stability. Cross-sections 3, 5, and 6 are located where recent bank repair work was completed
in early 2019 along Hogan Creek and are continuing to maintain stable conditions. Minor changes
occurring within some cross-sections include deposition in the floodplain, the formation of point bars,
the deepening of pools, and narrowing of riffles. Cross-section 9 along UT2 is representative of the
deposition occurring downstream of the bridge as the valley flattens near the confluence with Hogan
Creek. However, as demonstrated in cross-section 9, alluvial deposits have caused the bed and bank
elevations to rise but the bankfull dimensions remain consistent as compared to MY0. Please refer to
Appendix D for cross-section plots with annual overlays and Table 12 for morphology and hydraulic
summary.
The MY6 riffle pebble counts conducted for riffle cross-sections indicate similar or coarser sediment size
distribution as compared to MY0. Refer to Appendix D for pebble count plots with annual overlays.
1.2.4 Stream Areas of Concern and Management Activity
The stream repairs that were completed in March 2019 along Hogan Creek are continuing to maintain
stability. Live stake woody stems have become well established and banks have remained stable, even
after several large storm events in 2020. A few segments of scoured banks are present along Hogan
Creek and UT2. However, most of these segments have stabilizing woody vegetation along the top of
banks, thus minimizing the percentage of unstable banks. The downstream portions of UT2 and UT3
have some aggradation present, but willows and other woody stems along the banks have maintained
these channels’ bankfull form and function. Stream areas of concern are depicted on the current
condition plan view Figures 3.0-3.3 and Table 6 in Appendix B.
1.2.5 Hydrology Assessment
Site walks conducted on February 26 and September 8, 2020 along with visual observations, indicate
that bankfull events occurred in MY6. At least two bankfull events occurred on Hogan Creek and UT2
and were documented with the observation of wrack lines, recent alluvial deposits, and crest gage
measurements. Monthly rainfall data indicate higher than the normal rainfall amounts occurred during
the months of February, April, May, and August 2020. Project performance standards state that two
bankfull flow events must be documented on restoration reaches within the monitoring period and
must occur in separate. Therefore, the performance standard has been met and in MY6, at least 6

Hogan Creek Stream Mitigation Project
Monitoring Year 6 Annual Report - FINAL 1-4
bankfull events in separate years has been documented for each reach. Please refer to Appendix E for
hydrologic data and graphs.
1.3 Monitoring Year 6 Summary
The Hogan Creek Stream Mitigation Project has met monitoring success criteria for vegetation,
geomorphology, and hydrology performance standards. The MY6 vegetation survey resulted in an
average stem density of 425 planted stems per acre and is meeting the final success criterion of 260
stems per acre with all six plots (100%) individually meeting this requirement. The MY6 vegetation
monitoring and visual assessment revealed that the treatments are working to significantly reduce the
areas of invasive plant populations. Geomorphic surveys and visual assessments indicate that project
streams, including recently stabilized areas along Hogan Creek Reach 1 and Reach 2, appear stable and
functioning as intended. The hydrology performance standard of two recorded bankfull events in
separate monitoring years was met in MY2 for Hogan Creek and UT2.
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. Narrative background and supporting
information formerly found in these annual monitoring reports can be found in the Mitigation Plan
documents available on DMS’s website. All raw data supporting the tables and figures in the appendices
are available from DMS upon request.

Hogan Creek Stream Mitigation Project
Monitoring Year 6 Annual Report - FINAL 2-1
Section 2: METHODOLOGY
The stream monitoring methodologies utilized in 2020 are based on standard guidance and procedures
documents (Rosgen 1996 and USACE 2003). Geomorphic data were collected following the standards
outlined in The Stream Channel Reference Site: An Illustrated Guide to Field Techniques (Harrelson et
al., 1994) and in the Stream Restoration: A Natural Channel Design Handbook (Doll et al., 2003). All
Integrated Current Condition Mapping was recorded using a Trimble handheld GPS with sub-meter
accuracy and processed using Pathfinder and ArcGIS. Planted woody vegetation is being monitored in
accordance with the guidelines and procedures developed by the Carolina Vegetation Survey-EEP Level
2 Protocol (Lee et al., 2008). Crest gages were installed near surveyed riffle cross-sections and
monitored semi-annually.

Hogan Creek Stream Mitigation Project
Monitoring Year 6 Annual Report - FINAL 3-1
Section 3: REFERENCES
Confluence Engineering, PC. 2012. Hogan Creek Stream Mitigation Plan. NCEEP, Raleigh, NC.
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.
EcoEngineering. 2008. Technical Memorandum Task 2, Upper Yadkin Basin Local Watershed Plan.
Harrelson, Cheryl 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. 61 p.
Lee, Michael T., Peet, Robert K., Steven D., Wentworth, Thomas R. 2008. CVS-EEP Protocol for Recording
Vegetation Version 4.2. Retrieved from: http://cvs.bio.unc.edu/protocol/cvs-eep-protocol-v4.2-lev1-
2.pdf
North Carolina Climate Retrieval and Observations Network of the Southeast Database (NCCRONOS).
2020. State Climate Office of North Carolina. Version 2.7.2. NC-SR-2-Dobson 2.3 SE. Station ID
Dobson 2.3 SE. Accessed September 2020.
NCDENR. 2009. Upper Yadkin River Basin Restoration Priorities. Retrieved from
https://deq.nc.gov/about/divisions/mitigation-services/dms-planning/watershed-planning-
documents/yadkin-river-basin
North Carolina Geological Survey (NCGS). 2004. Physiography of North Carolina. Map compiled by the
Division of Land Resources. Raleigh.
Rosgen, D.L. 1996. Applied River Morphology. Pagosa Springs, CO: Wildland Hydrology Books.
United States Army Corps of Engineers (USACE), 2003. Stream Mitigation Guidelines. USACE, NCDENR-
DWQ, USEPA, NCWRC.

APPENDIX A. General Tables and Figures
030 4010109 005 0
03040 101 090040
03040 101110 050
03040 101110 060
03040 101110 040
Figure 1 Pro ject Vi ci nity Map
Hogan Creek St ream M it iga tio n Project
DMS Project No. 94708
Mo nitoring Year 6 - 2020
Surry County, NC
0 0.5 1 Mile
Pro ject Lo cati on
Hyd rol ogi c Unit Cod e (14)
¹
The subject project site is an environmental restoration site of
th e North Carolina Department o f Environmental Quality (DEQ)
Division of Mitigation Services (DMS) and is encompassed
by a recorded conservation easement, but is bordered
by land under private ownership. Accessing the site
may require traversing areas near or along the easement
boundary and therefore access by the general p ublic is not
permitted . Access by authorized personnel of state and
federal agencies or their designees/contractors involved in
the development, oversight,and stewardship of the restoration
site is permitted within the terms and timeframes of their
defined roles. Any intended site visitation or activity by
any person outsid e of these previously sanctio ned roles
an d activites req uires prior coordination with DMS.
Directions: The Hogan Creek project site is
located so utheast of Level Cross in Surry Co unty,
North Carolina. The site is accessed from I-77
north out of Statesville. Turn east off I-77 at exit
85 (NC 268 Bypass) and travel ap proximately 3
miles to the intersection with NC 268. Turn east
an d travel approximately 12 miles to a south turn
onto Miller Gap Road (SR2088). The site is
located approximately 2 miles south of NC 268 on
Miller Gap Road, which bisects the project site at
the bridge over Hogan Creek. T he project site is
bordered to the n orth by Trajan Trail, to the south
by Anderson Ro ad, and to the west by Siloam
Road. Latitude an d longitude for the site are
36.321609 N and 80.602389 W, respectively.
Hogan Creek Reach 1
Hogan Creek Reach 2
UT3U T 2 B
UT2CUT1UT1 A
UT1B
U
T
2
A UT2Figure 2 Pro ject Comp onent/Asset Map
Hogan Creek St ream M it iga tio n Project
DMS Project No. 94708
Mo nitoring Year 6 - 2020
Surry County, NC
2018 Aerial Phot ography
0 400 Feet
Co nservati on Ea sement
Stream Resto ratio n
Stream Enh an cement Level I
Stream Enh an cement Level II
Stream P reservat ion
Non Pro ject St reams
Existing Wetland
¹
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
Overall Credit 4,994.000 N/A N/A N/A
Hogan Reach 1 10+00 - 22+00 1,331 1,200 P2 EI 1:1 1,200.000 -
Hogan Reach 1 22+00 - 28+84 797 684 P2 R 1:1 684.000 Crossing was removed from total
Hogan Reach 2 29+35 - 38+97 876 962 P2 R 1:1 962.000 -
UT1,1A, 1B Upstream of 10+00 1,485 1,485 Preservation P 5:1 297.000 -
UT1 10+00 - 10+66 66 66 P3 EII 2.5:1 26.400 -
UT2, 2A, 2B,2C Upstream of 6+50 3,225 3,225 Preservation P 5:1 645.000 -
UT2 6+50 - 10+00 370 350 P3 EII 2.5:1 140.000 -
UT2 10+00 - 15+55 633 555 P2 R 1:1 555.000 Crossing was removed from total
UT3 Upstream of 9+40 963 963 Preservation P 5:1 192.600 -
UT3 9+40 - 12+32 260 292 P2 R 1:1 292.000 -
Riverine Non-Riverine
-
Restoration 2,493 -------
Enhancement -------
Enhancement I 1,200
Enhancement II 416
Creation -----
Preservation 5,673 -----
------
------
N/A - Not Applicable
1 Project components and mitigation credits reverted back to Mitigation Plan asset totals as requested by IRT.
Table 1. Project Components and Mitigation Credits
Monitoring Year 6 - 2020
Mitigation Credit Summaries 1
Stationing
Pre-project
Footage or
Acreage
Restoration
Footage or
Acreage
Restoration Level
N/A
Project Components 1
N/A
Stream Riparian Wetland Non-Riparian
Wetland Buffer Nitrogen Nutrient Offset Phosphorous Nutrient Offset
High Quality
Preservation
Restoration or
Rest Equiv.
Mitigation
Ratio
Mitigation
Credits
Project Component
or Reach ID
Buffer (Square feet)Upland (acres)
Notes
Length and Area Summations 1
Non-riparian
Wetland (acres)Stream (Linear Feet)Restoration Level Riparian Wetland (acres)
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
October-2011 February-2012
October-2011 November-2012
N/A December-2014
N/A December-2014
N/A December-2014
N/A March-2015
Vegetation Survey May-2015
Stream Survey June-2015
N/A December-2015
Vegetation Survey October-2015
Stream Survey December-2015
May-2016 May-2016
N/A January-2016
September-2016 September-2016
Vegetation Survey October-2016
Stream Survey June-2016
Vegetation Survey August-2017
Stream Survey July-2017
N/A June/August -2018
Vegetation Survey August-2018
Stream Survey June-2018
N/A March-2019
N/A June/August -2019
Vegetation Survey August-2019
Stream Survey July-2019
N/A May/Aug/Sept - 2020
Vegetation Survey August-2020
Stream Survey June-2020
N/A - Not Applicable
Table 3. Project Contacts Table
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
Monitoring Year 6 - 2020
Designer Confluence Engineering, PC
16 Broad Street
Asheville, NC 28801
Primary Project Design POC Andrew Bick 828-606-0306
Construction Contractor Carolina Environmental Contracting, Inc.
150 Pine Ridge Road
Mount Airy, NC 27030
Construction Contractor POC Wayne Taylor 336-341-6489
Survey Contractor Turner Land Surveying, PLLC
PO Box 41023
Raleigh, NC 27629
Survey Contractor POC David Turner 919-623-5095
Planting Contractor Keller Environmental, LLC
7921 Haymarket Lane
Raleigh, NC 27615
Planting Contractor POC Jay Keller 919-749-8259
Seeding Contractor Carolina Environmental Contracting, Inc.
150 Pine Ridge Road
Mount Airy, NC 27030
Seeding Contractor POC Wayne Taylor 336-341-6489
Seed Mix Sources
Nursery Stock Suppliers
Monitoring Performers Wildlands Engineering, Inc.
1430 South Mint Street, Ste 104
Charlotte, NC 28205
704.332.7754
Monitoring POC Kirsten Gimbert 704-332-7754
Invasive Species Treatment
Year 6 Monitoring November-2020
Green Resources 336-855-6363
Foggy Mountain Nursery 336-384-5323
Table 2. Project Activity and Reporting History
Monitoring Year 6 - 2020
Data Collection Complete Completion or DeliveryActivity or Deliverable
Mitigation Plan
Final Design – Construction Plans
Construction
Temporary S&E Mix Applied
Permanent Seed Mix Applied
Containerized, bare root and B&B plantings for reach/segments
Stream Repair/Maintenance
Baseline Monitoring Document (Year 0)August-2015
January-2016
November-2016
December-2017
November-2018
November-2019
Year 1 Monitoring
Year 2 Monitoring
Year 3 Monitoring
Year 4 Monitoring
Year 5 Monitoring
Invasive Species Treatment
Supplemental Planting
Invasive Species Treatment
Invasive Species Treatment
Invasive Species Treatment
Stream Repair/Maintenance
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
Length of Reach Post Construction (LF)1,961 1,227
Valley classification (Rosgen)VIII VI
Drainage area (acres)1,479 18
NCDWQ stream identification score 40 32.5
NCDWQ Water Quality Classification C C
Morphological Description (Rosgen stream type)C4 G4
Evolutionary trend C-F Eb-G
Underlying mapped soils CsA FsE
Drainage class well drained well drained
Soil Hydric status not hydric not hydric
Slope 0.007 0.030
FEMA classification AE Not in SFHA
Native vegetation community Felsic Mesic Forest Felsic Mesic Forest
Percent composition of exotic invasive vegetation 0 0
Parameters
Size of Wetland (acres)
Wetland Type
Mapped Soil Series
Drainage class
Soil Hydric Status
Source of Hydrology
Hydrologic Impairment
Percent composition of exotic invasive vegetation
N/A Not-applicable
VI
Reach Summary Information
Parameters Main Stem UT1 Main Stem UT2 UT3Hogan Creek Reach 1 Hogan Creek Reach 2
Wetland 2
well drained well drained
not hydric not hydric not hydric
60 81
37 31 31.5
FsE
C C C
C4
0.02
riparian non-riverine
CsA and FsE
well drained
not hydric
Toe seep
none
Table 4. Project Baseline Information and Attributes
Monitoring Year 6 - 2020
Project Name Hogan Creek Stream Mitigation Project
0.10
riparian non-riverine
CsA and FsE
well drained
not hydricnot hydric
Pee Dee River Subbasin 03-07-02
992 1,442 2,869
VIII VI
Creek (oxbow)
none
Dist. Small Stream/
0
Herbaceous
Narrow FP Forest
0
Dist. Small Stream/
Narrow FP Forest
Impoundment
none
County Surry
Project Area (acres) 36
Project Coordinates (latitude and longitude)36.321609 N, 80.602389 W
Project Watershed Summary Information
Physiographic Province Piedmont
River Basin Yadkin
USGS Hydrologic Unit 8-digit
Project Drainage Area (acres)1,514 ac (2.37 mi2)
Project Drainage Area Percentage of Impervious Area 0.40%
CGIA Land Use Classification Managed Herbaceous Cover, Broadleaf Deciduous Forest Land
03040101
USGS Hydrologic Unit 14-digit 03040101110060
DWR Sub-basin
E4b E4b
1,514
Regulatory Considerations
0.021
AE Not in SFHA Not in SFHA
0
Narrow FP Forest
Wetland 3 Wetland 4
0.13
riparian non-riverine
CsA and FsE
well drained
not hydric
Toe seep
none
0
Native vegetation community
Wetland 1
0.09
Dist. Small Stream/
riparian non-riverine
CsA
well drained
Essential Fisheries Habitat N N/A -
Historic Preservation Act N N/A -
Coastal Zone Management Act (CZMA)/ Coastal Area Management Act (CAMA)N N/A -
FEMA Floodplain Compliance Y Y LOMR Submitted 5/2015
Waters of the United States – Section 401 Y Y NCDWR # 20120182
Endangered Species Act Y Y CE Approved 9/30/11
Regulation Applicable?Resolved?Supporting Documentation
Waters of the United States – Section 404 Y Y USACE Action ID # SAW-2011-02268
Project Information
Wetland Summary Information
Felsic Mesic Forest Felsic Mesic Forest Felsic Mesic Forest
0 0 0
0.005 0.031
C-F Eb-G Eb-G
CsA CsA, FsE
well drained
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
Hogan Creek Reach 1 Hogan Creek Reach 2 UT1 UT2 UT3
Riffle XS 2 2 2 Annual
Pool XS 1 1 1 Annual
Pattern/Profile Longitudinal Profile 1500 1000 675 Annual
Substrate 100 Pebble Count 2 2 Annual
Hydrology Crest Gage 1 1 Semi-Annual
Vegetation Vegetation Plots 3 2 1 Annual
Visual Assessment Project Site Y Y Y Y Y Semi-Annual
Reference Photos Permanent Photo Points 18 6 3 10 4 Annual
Dimension
Quantity Length By Reach (ft)Frequency
Table 5. Monitoring Component Summary
Monitoring Year 6 - 2020
Parameter Monitoring Feature
APPENDIX B. Visual Assessment Data
Shee t 1
Sheet 2
Sheet 3
Hogan Creek Reach 1
Hogan Creek Reach 2
UT3UT2U T 2 B
U T 2 CUT1UT1A
U T 1 B
U
T
2
A
Wetland 3
Wetland 4
Wetland 1
Wetland 2
6
4
2
5
3
1
Conservation Ea sement
St ream Restoration
St ream E nhancement Lev el I
St ream E nhancement Lev el II
St ream Preservatio n
No n Project Streams
Existi ng Wetla nd
GF Photo Poi nt (PP)
!A Crest Gage
Cro ss-Sect ion (XS)
Vegetation Monitoring Plots (V P) - MY 6
Criteria Met
Vegetation Areas of C oncern - MY 6
Chin ese Privet
Ja pan ese Honeysuckle
Ku dzu
Mi mosa
Tree of Heaven
Mo wing Herbaceous Cov er
Stream Areas of C oncern - MY 6
Scour/Erosi on
Bed Ag grada tio n
Figure 3.0 Current Condi tio n Pla n Vi ew Map (Key )
Hogan Creek St ream M it igatio n Project
DMS Project No. 94708
Mo nitoring Year 6 - 2020
Surry C ounty, NC
0 600300 Feet ¹
201 8 Aerial Imager y
UT1Ho
g
a
n
Cr
e
e
k
Re
a
c
h

1
UT1AUT1B
9
20
19
18
1716
15
14
13
12
11
10
16A 16B
Wetland 3
Wetland 2
2
1
10+0010+0011+001 6 +0 0
18+0019+0017+0015+001 2 +00
20+0014+001 3 +0 0
21+00Figure 3.1 Current Condi tio n Pla n Vi ew Map (Sheet 1 of 3)
Hogan Creek St ream M it igatio n Project
DMS Project No. 94708
Mo nitoring Year 6 - 2020
Surry C ounty, NC
0 250125 Feet ¹
Conservation Ea sement
St ream Restoration
St ream E nhancement Lev el I
St ream E nhancement Lev el II
St ream Preservatio n
No n Project Streams
Top of Ba nk
St ru ctures
Existi ng Wetla nd
GF Photo Poi nt (PP)
!A Crest Gage
Cro ss-Sect ion (XS)
Vegetation Monitoring Plots (V P) - MY 6
Criteria Met
Vegetation Areas of C oncern - MY 6
Chin ese Privet
Ja pan ese Honeysuckle
Ku dzu
Mi mosa
Tree of Heaven
Stream Areas of C oncern - MY 6
Scour/Erosi on
Bed Ag grada tio n2018 Aerial Imager y
UT3Hogan Creek Reach 2Missing conservation
easement corner sign
Hogan Creek Reach 1
UT2Missi ng conservatio n
easement corn er sign
Recen t mowi ng in
ease ment alo ng fencelin e
Conservation easem ent
sign do wn 8
7
6
5
4
3
2
1
1A
32
31
30
2928
272625
24
23
22
21
20
28B
28C
28A XS4X
S
5
XS6XS7XS2XS3
X
S8 XS9X
S
1
Wetla nd 4
65
3
4
11+001 1 +0 0
36+0023+0025+0014+00
3
4
+
0
031+0032+0033+003
9
+
0
0
10+00
10+0024+0028+0026+0035
+
0015+001
3
+
0
0
1 2 +0 0
12+00 30+0038+00 40+0021+0022+0027+00
29+0037+00Figure 3.2 Current Condi tio n Pla n Vi ew Map (Sheet 2 of 3)
Hogan Creek St ream M it igatio n Project
DMS Project No. 94708
Mo nitoring Year 6 - 2020
Surry C ounty, NC
0 300150 Feet ¹
201 8 Aerial Imager y
Conservation Ea sement
St ream Restoration
St ream E nhancement Lev el I
St ream E nhancement Lev el II
St ream Preservatio n
No n Project Streams
Top of Ba nk
St ru ctures
Existi ng Wetla nd
GF Photo Poi nt (PP)
!A Crest Gage
Cro ss-Sect ion (XS)
Vegetation Monitoring Plots (V P) - MY 6
Criteria Met
Vegetation Areas of C oncern - MY 6
Chin ese Privet
Ja pan ese Honeysuckle
Ku dzu
Mi mosa
Tree of Heaven
Mo wing Herbaceous Cov er
Stream Areas of C oncern - MY 6
Scour/Erosi on
Bed Ag grada tio n
UT2UT3UT1AU
T2
CUT2B
UT2AXS3XS 9VP3= 600/320PP28A
PP28B
PP28C
Missing con serva tion
easement sign
UT2X
S
7XS3 XS8
XS9
Wetla nd 1
6
5
4
3
2
1
1A
1B
1C
1D
4
11+00
1 4 +0 0 10+0010+0013+00
12+00
Figure 3.3 Current Condi tio n Pla n Vi ew Map (Sheet 3 of 3)
Hogan Creek St ream M it igatio n Project
DMS Project No. 94708
Mo nitoring Year 6 - 2020
Surry C ounty, NC
0 250125 Feet ¹201 8 Aerial Imager y
Conservation Ea sement
St ream Restoration
St ream E nhancement Level I
St ream E nhancement Level II
St ream P reservation
Top of Ba nk
St ru ctures
Existi ng Wetland
GF Photo Poi nt (PP)
!A Crest Gage
Cro ss-Sect ion (XS)
Vegetation Monitoring Plots (VP) - MY6
Criteria Met
Vegetation Areas of Concern - MY6
Chin ese P rivet
Ja pan ese Honeysuckle
Ku dzu
Mi mosa
Tree of Heaven
Stream Areas of Concern - MY6
Scour/Erosion
Bed Ag gradation
Table 6a. Visual Stream Morphology Stability Assessment Table
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
Monitoring Year 6 - 2020
1. Aggradation - Bar formation/growth sufficient to significantly deflect flow laterally (not to include
point bars)5 110 94%
2. Degradation - Evidence of downcutting 0 0 100%
2. Riffle Condition 1. Texture/Substrate - Riffle maintains coarser substrate 14 14 100%
1. Depth Sufficient (Max Pool Depth : Mean Bankfull Depth > 1.6)13 13 100%
2. Length appropriate (>30% of centerline distance between tail of upstream riffle and head of
downstrem riffle)13 13 100%
1. Thalweg centering at upstream of meander bend (Run)13 13 100%
2. Thalweg centering at downstream of meander (Glide)13 13 100%
1. Scoured/Eroding Bank lacking vegetative cover resulting simply from poor growth and/or scour and erosion 5 78 98%4 65 99.7%
2. Undercut Banks undercut/overhanging to the extent that mass wasting appears likely. Does NOT include
undercuts that are modest, appear sustainable and are providing habitat.0 0 100%0 0 N/A
3. Mass Wasting Bank slumping, calving, or collapse 0 0 100%0 0 N/A
5 78 98%4 65 99.7%
1. Overall Integrity Structures physically intact with no dislodged boulders or logs.15 15 100%
2. Grade Control Grade control structures exhibiting maintenance of grade across the sill. 5 5 100%
2a. Piping Structures lacking any substantial flow underneath sills or arms.12 12 100%
3. Bank Protection Bank erosion within the structures extent of influence does not exceed 15%. (See guidance for this
table in EEP monitoring guidance document) 15 15 100%
4. Habitat Pool forming structures maintaining ~ Max Pool Depth : Mean Bankfull Depth ratio > 1.6
Rootwads/logs providing some cover at base-flow.15 15 100%
Totals
3. Engineered
Structures
1. Bed
2. Bank
1. Vertical Stability (Riffle and
Run units)
3. Meander Pool Condition
4.Thalweg Position
Hogan Creek Reach 1 (Assessed Length : 1,961 feet)
Major Channel
Category Channel Sub-Category Metric
Number Stable,
Performing as
Intended
Total Number in
As-built
Number of
Unstable
Segments
Amount of
Unstable
Footage
% Stable,
Performing as
Intended
Number with
Stabilizing
Woody
Vegetation
Footage with
Stabilizing
Woody
Vegetation
Adjusted % for
Stabilizing
Woody
Vegetation
Table 6b. Visual Stream Morphology Stability Assessment Table
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
Monitoring Year 6 - 2020
1. Aggradation - Bar formation/growth sufficient to significantly deflect flow laterally (not to include
point bars)0 0 100%
2. Degradation - Evidence of downcutting 0 0 100%
2. Riffle Condition 1. Texture/Substrate - Riffle maintains coarser substrate 6 6 100%
1. Depth Sufficient (Max Pool Depth : Mean Bankfull Depth > 1.6)5 5 100%
2. Length appropriate (>30% of centerline distance between tail of upstream riffle and head of
downstrem riffle)5 5 100%
1. Thalweg centering at upstream of meander bend (Run)5 5 100%
2. Thalweg centering at downstream of meander (Glide)5 5 100%
1. Scoured/Eroding Bank lacking vegetative cover resulting simply from poor growth and/or scour and erosion 2 36 98%0 0 N/A
2. Undercut Banks undercut/overhanging to the extent that mass wasting appears likely. Does NOT include
undercuts that are modest, appear sustainable and are providing habitat.0 0 100%0 0 N/A
3. Mass Wasting Bank slumping, calving, or collapse 0 0 100%0 0 N/A
2 36 98%0 0 N/A
1. Overall Integrity Structures physically intact with no dislodged boulders or logs.6 6 100%
2. Grade Control Grade control structures exhibiting maintenance of grade across the sill. 1 1 100%
2a. Piping Structures lacking any substantial flow underneath sills or arms.5 5 100%
3. Bank Protection Bank erosion within the structures extent of influence does not exceed 15%. (See guidance for this
table in EEP monitoring guidance document) 5 6 83%
4. Habitat Pool forming structures maintaining ~ Max Pool Depth : Mean Bankfull Depth ratio > 1.6
Rootwads/logs providing some cover at base-flow.6 6 100%
1. Bed
Totals
3. Engineered
Structures
2. Bank
1. Vertical Stability (Riffle and
Run units)
3. Meander Pool Condition
4.Thalweg Position
Hogan Creek Reach 2 (Assessed Length : 992 feet)
Major Channel
Category Channel Sub-Category Metric
Number Stable,
Performing as
Intended
Total Number in
As-built
Number of
Unstable
Segments
Amount of
Unstable
Footage
% Stable,
Performing as
Intended
Number with
Stabilizing
Woody
Vegetation
Footage with
Stabilizing
Woody
Vegetation
Adjusted % for
Stabilizing
Woody
Vegetation
Table 6c. Visual Stream Morphology Stability Assessment Table
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
Monitoring Year 6 - 2020
1. Aggradation - Bar formation/growth sufficient to significantly deflect flow laterally (not to include
point bars)1 40 96%
2. Degradation - Evidence of downcutting 0 0 100%
2. Riffle Condition 1. Texture/Substrate - Riffle maintains coarser substrate 12 14 86%
1. Depth Sufficient (Max Pool Depth : Mean Bankfull Depth > 1.6)13 13 100%
2. Length appropriate (>30% of centerline distance between tail of upstream riffle and head of
downstrem riffle)13 13 100%
1. Thalweg centering at upstream of meander bend (Run)13 13 100%
2. Thalweg centering at downstream of meander (Glide)13 13 100%
1. Scoured/Eroding Bank lacking vegetative cover resulting simply from poor growth and/or scour and erosion 2 25 99%2 25 100%
2. Undercut Banks undercut/overhanging to the extent that mass wasting appears likely. Does NOT include
undercuts that are modest, appear sustainable and are providing habitat.0 0 100%0 0 100%
3. Mass Wasting Bank slumping, calving, or collapse 0 0 100%0 0 100%
2 25 99%2 25 100%
1. Overall Integrity Structures physically intact with no dislodged boulders or logs.6 6 100%
2. Grade Control Grade control structures exhibiting maintenance of grade across the sill. 2 2 100%
2a. Piping Structures lacking any substantial flow underneath sills or arms.4 4 100%
3. Bank Protection Bank erosion within the structures extent of influence does not exceed 15%. (See guidance for this
table in EEP monitoring guidance document) 5 6 83%
4. Habitat Pool forming structures maintaining ~ Max Pool Depth : Mean Bankfull Depth ratio > 1.6
Rootwads/logs providing some cover at base-flow.6 6 100%
1. Bed
Totals
3. Engineered
Structures
2. Bank
1. Vertical Stability (Riffle and
Run units)
3. Meander Pool Condition
4.Thalweg Position
UT2 (Assessed Length : 930 feet)
Major Channel
Category Channel Sub-Category Metric
Number Stable,
Performing as
Intended
Total Number in
As-built
Number of
Unstable
Segments
Amount of
Unstable
Footage
% Stable,
Performing as
Intended
Number with
Stabilizing
Woody
Vegetation
Footage with
Stabilizing
Woody
Vegetation
Adjusted % for
Stabilizing
Woody
Vegetation
Table 6d. Visual Stream Morphology Stability Assessment Table
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
Monitoring Year 6 - 2020
1. Aggradation - Bar formation/growth sufficient to significantly deflect flow laterally (not to include
point bars)1 20 93%
2. Degradation - Evidence of downcutting 0 0 100%
2. Riffle Condition 1. Texture/Substrate - Riffle maintains coarser substrate 4 4 100%
1. Depth Sufficient (Max Pool Depth : Mean Bankfull Depth > 1.6)4 4 100%
2. Length appropriate (>30% of centerline distance between tail of upstream riffle and head of
downstrem riffle)4 4 100%
1. Thalweg centering at upstream of meander bend (Run)4 4 100%
2. Thalweg centering at downstream of meander (Glide)4 4 100%
1. Scoured/Eroding Bank lacking vegetative cover resulting simply from poor growth and/or scour and erosion 0 0 100%0 0 100%
2. Undercut Banks undercut/overhanging to the extent that mass wasting appears likely. Does NOT include
undercuts that are modest, appear sustainable and are providing habitat.0 0 100%0 0 100%
3. Mass Wasting Bank slumping, calving, or collapse 0 0 100%0 0 100%
0 0 100%0 0 100%
1. Overall Integrity Structures physically intact with no dislodged boulders or logs.1 1 100%
2. Grade Control Grade control structures exhibiting maintenance of grade across the sill. 1 1 100%
2a. Piping Structures lacking any substantial flow underneath sills or arms.1 1 100%
3. Bank Protection Bank erosion within the structures extent of influence does not exceed 15%. (See guidance for this
table in EEP monitoring guidance document) 1 1 100%
4. Habitat Pool forming structures maintaining ~ Max Pool Depth : Mean Bankfull Depth ratio > 1.6
Rootwads/logs providing some cover at base-flow.1 1 100%
1. Bed
Totals
3. Engineered
Structures
2. Bank
1. Vertical Stability (Riffle and
Run units)
3. Meander Pool Condition
4.Thalweg Position
UT3 (Assessed Length : 275 feet)
Major Channel
Category Channel Sub-Category Metric
Number Stable,
Performing as
Intended
Total Number in
As-built
Number of
Unstable
Segments
Amount of
Unstable
Footage
% Stable,
Performing as
Intended
Number with
Stabilizing
Woody
Vegetation
Footage with
Stabilizing
Woody
Vegetation
Adjusted % for
Stabilizing
Woody
Vegetation
Table 7. Vegetation Condition Assessment Table
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
Monitoring Year 6 - 2020
Planted Acreage 6.7
1. Bare Areas Very limited cover of both woody and herbaceous material.0.1 acres Cross Hatch
Yellow 0 0.00 0.0%
2. Low Stem Density Areas Woody stem densities clearly below target levels based on MY3, 4, or 5 stem count criteria.0.1 acres N/A 0 0.00 0.0%
0 0.00 0.0%
3. Areas of Poor Growth Rates or Vigor Areas with woody stems of a size class that are obviously small given the monitoring year.0.25 acres N/A 0 0.00 0.0%
0 0.00 0.0%
Easement Acreage 36
4. Invasive Areas of Concern Areas or points (if too small to render as polygons at map scale).100 SF
Cross Hatch
(Color varies by
Species)
13 0.21 0.6%
5. Easement Encroachment Areas Areas or points (if too small to render as polygons at map scale).none Cross Hatch
Yellow 1 0.05 0.1%
Combined
Acreage
% of Planted
Acreage
Total
Cumulative Total
Vegetation Category Definitions Mapping
Threshold CCPV Depiction Number of
Polygons
Combined
Acreage
% of Easement
Acreage
Vegetation Category Definitions Mapping
Threshold CCPV Depiction Number of
Polygons

Stream Photographs

PP1 – Main Stem UT2, looking downstream (9/8/2020) PP1A – Main Stem UT2, looking upstream (9/8/2020)

PP1B – Main Stem UT2, looking downstream (9/8/2020) PP1C – Main Stem UT2, looking upstream (9/8/2020)

PP1D – Main Stem UT2, looking upstream (9/8/2020)

PP2 – Main Stem UT2, looking downstream (9/8/2020)

PP3 – Main Stem UT2, looking upstream (9/8/2020) PP4 – Main Stem UT2, looking upstream (9/8/2020)

PP5 – Main Stem UT2, looking downstream (9/8/2020) PP6 – Main Stem UT2, looking downstream (9/8/2020)

PP7 – Main Stem UT2, looking downstream (9/8/2020) PP8 – Reach 1 Hogan Creek, looking upstream (9/8/2020)

PP9 – Reach 1 Hogan Creek, looking downstream (8/13/2020) PP10 – Reach 1 Hogan Creek, looking downstream (8/13/2020)

PP11 – Reach 1 Hogan Creek, looking downstream (8/13/2020) PP12 – Reach 1 Hogan Creek, looking downstream (8/13/2020)

PP13 – Reach 1 Hogan Creek, looking downstream (8/13/2020) PP14 – Reach 1 Hogan Creek, looking downstream (8/13/2020)

PP15 – Reach 1 Hogan Creek, looking downstream (8/13/2020) PP16 – Main Stem UT1, looking downstream (8/13/2020)

PP16A – Main Stem UT1, looking upstream (8/13/2020) PP16B – Main Stem UT1, looking downstream (8/13/2020)

PP17 – Reach 1 Hogan Creek, looking downstream (9/8/2020) PP18 – Reach 1 Hogan Creek, looking downstream (9/8/2020)

PP19 – Reach 1 Hogan Creek, looking downstream (9/8/2020) PP20 – Reach 1 Hogan Creek, looking downstream (9/8/2020)

PP21 – Reach 1 Hogan Creek, looking downstream (9/8/2020) PP22 – Reach 1 Hogan Creek, looking downstream (9/8/2020)

PP23 – Reach 1 Hogan Creek, looking downstream (9/8/2020) PP24 – Reach 1 Hogan Creek, looking downstream (9/8/2020)

PP25 – Reach 1 Hogan Creek, looking upstream (9/8/2020) PP26 – Reach 2 Hogan Creek, looking downstream (9/8/2020)

PP27 – Reach 2 Hogan Creek, looking downstream (9/8/2020) PP28 – UT3, looking upstream (9/8/2020)

PP28A – UT3, looking upstream (9/8/2020) PP28B – UT3, looking downstream (9/8/2020)

PP28C – UT3, looking upstream (9/8/2020) PP29 – Reach 2 Hogan Creek, looking downstream (9/8/2020)

PP30 – Reach 2 Hogan Creek, looking downstream (9/8/2020) PP31 – Reach 2 Hogan Creek, looking downstream (9/8/2020)

PP32 – Reach 2 Hogan Creek, looking downstream (9/8/2020)

Vegetation Photographs

Vegetation Plot 1 – (8/13/2020) Vegetation Plot 2 – (8/13/2020)

Vegetation Plot 3 – (8/13/2020) Vegetation Plot 4 – (8/13/2020)

Vegetation Plot 5 – (8/13/2020)

Vegetation Plot 6 – (8/13/2020)
APPENDIX C. Vegetation Plot Data
Table 8. Vegetation Plot Criteria Attainment
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
Monitoring Year 6 - 2020
Table 9. CVS Vegetation Plot Metadata
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
Monitoring Year 6 - 2020
6
6
cvs-eep-entrytool-v2.3.1 Hogan MY6.mdb
94708
Hogan Creek
Each project is listed with its PLANTED stems per acre, for each year. This excludes live stakes.
Description of database file, the report worksheets, and a summary of project(s) and project data.
61771776
MIMI-PC
List of most frequent damage classes with number of occurrences and percent of total stems impacted by each.
Frequency distribution of vigor classes listed by species.
Frequency distribution of vigor classes for stems for all plots.
List of plots surveyed with location and summary data (live stems, dead stems, missing, etc.).
Each project is listed with its TOTAL stems per acre, for each year. This includes live stakes, all planted stems, and all natural/volunteer stems.
A matrix of the count of total living stems of each species (planted and natural volunteers combined) for each plot; dead and missing stems are excluded.
A matrix of the count of PLANTED living stems of each species for each plot; dead and missing stems are excluded.
Damage values tallied by type for each plot.
Damage values tallied by type for each species.
Required Plots (calculated)
Sampled Plots
Planted Stems by Plot and Spp
ALL Stems by Plot and spp
PROJECT SUMMARY-------------------------------------
Project Code
Project Name
6
Required Plots (calculated)
Sampled Plots
Description
River Basin
Length(ft)
Stream-to-edge Width (ft)
Area (sq m)
Vigor
Vigor by Spp
Damage
Damage by Spp
Damage by Plot
DESCRIPTION OF WORKSHEETS IN THIS DOCUMENT------------
Metadata
Proj, planted
Proj, total stems
Plots
Database Location
Computer Name
File Size
Plot MY5 Success Criteria Met
(Y/N)Tract Mean
1 Y
100%
2 Y
3 Y
4 Y
L:\Active Projects\005-02152 Hogan Monitoring\Monitoring\MY6 (2020)\Vegetation Assessment
5 Y
6 Y
Database Name
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
Betula nigra river birch Tree 3 3 78 2 2 12 2 2 4 4 4 4 1 1 3
Diospyros virginiana common persimmon Tree 3 3 3 5 5 5
Fraxinus pennsylvanica green ash Tree 3 3 3 2 2 2 2 2 2 3 3 3 1 1 1
Juglans nigra black walnut Tree 1
Lindera benzoin northern spicebush Shrub 5
Liriodendron tulipifera tuliptree Tree 8 1 25 1
Nyssa sylvatica blackgum Tree 2 2 2
Pinus taeda loblolly pine Tree 1
Platanus occidentalis American sycamore Tree 2 2 2 3 3 3 1 1 1 8 8 8 1 1 1
Prunus serotina black cherry Tree 5 3 3
Quercus alba white oak Tree
Quercus lyrata overcup oak Tree 1 1 1 4 4 4 1 1 1 2 2 2 5 5 5
Quercus phellos willow oak Tree 2 2 2
9 9 103 7 7 21 9 9 14 16 16 41 9 9 12 13 13 14
4 4 8 3 3 5 4 4 5 4 4 5 5 5 6 4 4 5
364 364 4168 283 283 850 364 364 567 647 647 1659 364 364 486 526 526 567
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 1 7 1 5
Betula nigra river birch Tree 10 10 10 10 10 149 10 10 169 10 10 165 10 10 193 8 8 162 12 12 101
Diospyros virginiana common persimmon Tree 11 11 11 9 9 9 10 10 10 8 8 8 8 8 8
Fraxinus pennsylvanica green ash Tree 17 17 17 14 14 14 15 15 15 13 13 13 13 13 13 10 10 10 11 11 11
Juglans nigra black walnut Tree 1 2 3 2 1
Lindera benzoin northern spicebush Shrub 10 5
Liriodendron tulipifera tuliptree Tree 70 62 64 19 15 35
Nyssa sylvatica blackgum Tree 12 12 12 12 12 12 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Pinus taeda loblolly pine Tree 3 2 15 1
Platanus occidentalis American sycamore Tree 13 13 13 14 14 17 14 14 20 14 14 15 14 14 31 14 14 15 15 15 15
Prunus serotina black cherry Tree 27 41 33 11
Quercus alba white oak Tree 2 1 1
Quercus lyrata overcup oak Tree 13 13 13 15 15 15 17 17 17 16 16 16 16 16 16 14 14 14 13 13 13
Quercus phellos willow oak Tree 6 6 6 4 4 4 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2
71 71 102 69 69 330 70 70 335 65 65 294 67 67 304 58 58 240 63 63 205
6 6 10 6 6 10 7 7 12 7 7 11 7 7 10 7 7 10 7 7 12
479 479 688 465 465 2226 472 472 2259 438 438 1983 452 452 2050 391 391 1619 425 425 1383
Color for Density
PnoLS: Number of planted stems excluding live stakes
P-all: Number of planted stems including live stakes
T: Total stems
MY6 (2020)
6
0.148
Annual Stem Counts & Means
0.148
1
0.1480.1480.148
Stems per ACRE
0.148
MY4 (2018)
Species count
Scientific Name Common Name
66
Species Type
Stem count
size (ares)
0.148size (ACRES)
Exceeds requirements by 10%
Exceeds requirements, but by less than 10%
Fails to meet requirements, by less than 10%
Fails to meet requirements by more than 10%
Volunteer species included in total
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
Monitoring Year 6 - 2020
Stem count
Scientific Name Common Name Species Type
Table 10. Planted and Total Stem Counts
Current Plot Data (MY6 2020)
94708-01-0006
MY3 (2017)MY2 (2016)
1
MY5 (2019)
Stems per ACRE
1
94708-01-0001 94708-01-0002 94708-01-0003 94708-01-0005
MY1 (2015)
94708-01-0004
MY0 (2015)
size (ares)1
Species count
66
size (ACRES)0.0247 0.0247 0.0247 0.0247
6
1 1
0.0247 0.0247
6
APPENDIX D. Morphological Summary Data and Plots
Hogan Creek Stream Mitigation Project
DMS Project No.94708
Parameter Gage
LL UL Eq. Min Mean Med Max SD n Min Mean Med Max SD n Min Med Max Min Mean Med Max SD n
Bankfull Width (ft)---21.5 -25.7 29.7 --27.2 -30.4 33.6 --22.5 23.3 24.0 22.8 24.2 24.2 25.6 -2
Floodprone Width (ft)178.0 -220.0 246.0 --72.1 -72.3 72.5 --100.0 150.0 200.0 >100 >100 >100 >100 -2
Bankfull Mean Depth (ft)---2.0 -1.9 2.1 --1.9 -2.0 2.2 --1.8 1.9 2.2 1.7 1.8 1.8 1.8 -2
Bankfull Max Depth (ft)2.5 -2.7 3.2 --2.4 -2.5 2.7 --2.5 2.6 2.8 2.7 2.8 2.8 2.9 -2
Bankfull Cross Sectional Area (ft2)---45.1 -48.6 59.3 --50.8 -61.6 72.4 --40.6 44.1 47.6 41.4 42.7 42.7 43.9 -2
Width/Depth Ratio 10.3 -13.6 14.9 --14.5 -15.0 15.6 --12.1 12.3 12.5 12.6 13.8 13.8 14.9 -2
Entrenchment Ratio 8.3 -8.6 8.3 --2.7 -2.7 2.7 --4.4 6.5 8.3 >3.9 >4.2 >4.2 >4.4 -2
Bank Height Ratio 1.3 -1.3 1.4 --1.0 -1.0 1.1 --1.0 1.0 1.0 1.0 1.0 1.0 1.0 -2
Riffle Length (ft)---------------37.17 58.9 -98.4 -8
Riffle Slope (ft/ft)0.010 -0.024 0.055 --0.019 -0.020 0.021 --0.007 0.010 0.013 0.002 0.010 -0.018 -8
Pool Length (ft)---------------25.0 62.6 -88.0 -13
Pool Max depth (ft)4.0 -4.3 4.7 --3.4 -3.5 3.5 --4.0 4.0 4.0 2.5 3.2 -4.1 -13
Pool Spacing (ft)---------------73.3 120.9 -200.08 -12
Channel Beltwidth (ft)44.0 -65.0 117.0 --86.0 -86.0 86.0 --48.0 88.0 126.0 63.0 96.5 101.0 121.0 24.9 4
Radius of Curvature (ft)20.0 -29.0 52.0 --19.6 -22.7 25.8 --67.0 73.0 101.0 70.0 76.5 75.0 86.0 6.8 4
Rc:Bankfull width (ft/ft)0.9 -1.1 1.8 --0.7 -0.8 0.9 --3.0 3.1 4.2 2.9 3.2 3.1 3.6 N/A N/A
Meander Wavelength (ft)133.0 -297.0 479.0 --81.0 -81.0 81.0 --133.0 311.0 325.0 165.0 263.7 306.0 320.0 85.7 3
Meander Width Ratio 2.0 -2.5 3.9 --3.2 -3.2 3.2 --2.1 3.8 5.3 2.6 4.0 4.2 5.0 N/A N/A
Ri% / Ru% / P% / G% / S%
SC% / Sa% / G% / C% / B% / Be%
d16 / d35 / d50 / d84 / d95 (mm)
Reach Shear Stress (competency) lb/f2
Max part size (mm) mobilized at bankfull
Stream Power (transport capacity) W/m2
Rosgen Classification
Bankfull Velocity (fps)---
Bankfull Discharge (cfs)---
Valley length (ft)
Channel Thalweg length (ft)
Sinuosity (ft)
Water Surface Slope (Channel) (ft/ft)
BF slope (ft/ft)
Bankfull Floodplain Area (acres)
% of Reach with Eroding Banks
Channel Stability or Habitat Metric
Biological or Other
N/A - Not Applicable
- Information Unavailable
--14, 19, 23, 41, 56
--0%,3.5%,96%,0.5%,0%,0%
---
--
--
--
0.0071 0.0101 0.0062 0.0067
----
1.12 1.26 1.15 1.18
0.0064 0.0127 0.0071 0.0063
2,525 4,730 1,294
2,762 327 2,897 1,532
---
-
C4 C4 C4 C4
--
---
---
N/A
Table 11a. Baseline Stream Data Summary
Monitoring Year 6 - 2020
Dimension and Substrate - Riffle Only
Profile
Pattern
Substrate, Bed, and Transport parameters
Additional Reach Parameters
N/A
N/A
N/A
N/A
Hogan Creek - Reach 1 (1,532 feet)
Regional Curve Pre-Existing Condition Reference Reach Data Design Monitoring Baseline
-
Hogan Creek Stream Mitigation Project
DMS Project No.94708
Parameter Gage
LL UL Eq. Min Mean Med Max SD n Min Mean Med Max SD n Min Med Max Min Mean Med Max SD n
Bankfull Width (ft)---21.5 -25.7 29.7 --27.2 -30.4 33.6 --22.5 23.3 24.0 24.2 24.5 24.5 24.7 -2
Floodprone Width (ft)178.0 -220.0 246.0 --72.1 -72.3 72.5 --100.0 150.0 200.0 >100 >100 >100 >100 -2
Bankfull Mean Depth (ft)---2.0 -1.9 2.1 --1.9 -2.0 2.2 --1.8 1.9 2.2 1.9 2.1 2.1 2.3 -2
Bankfull Max Depth (ft)2.5 -2.7 3.2 --2.4 -2.5 2.7 --2.5 2.6 2.8 3.2 3.4 3.4 3.6 -2
Bankfull Cross Sectional Area (ft2)---45.1 -48.6 59.3 --50.8 -61.6 72.4 --40.6 44.1 47.6 45.2 50.9 50.9 56.6 -2
Width/Depth Ratio 10.3 -13.6 14.9 --14.5 -15.0 15.6 --12.1 12.3 12.5 10.8 11.9 11.9 13.0 -2
Entrenchment Ratio 8.3 -8.6 8.3 --2.7 -2.7 2.7 --4.4 6.5 8.3 >4.0 >4.1 >4.1 >4.1 -2
Bank Height Ratio 1.3 -1.3 1.4 --1.0 -1.0 1.1 --1.0 1.0 1.0 1.0 1.0 1.0 1.0 -2
Riffle Length (ft)---------------95.63 111.62 -130.25 -5
Riffle Slope (ft/ft)0.010 -0.024 0.055 --0.019 -0.020 0.021 --0.007 0.010 0.013 0.004 0.005 -0.007 -5
Pool Length (ft)---------------43.7 68.8 -117.1 -5
Pool Max depth (ft)4.0 -4.3 4.7 --3.4 -3.5 3.5 --4.0 4.0 4.0 3.80 4.73 -5.8 -5
Pool Spacing (ft)---------------164.1 208.4 -253.1 -4
Channel Beltwidth (ft)44.0 -65.0 117.0 --86.0 -86.0 86.0 --48.0 88.0 126.0 84.0 114.0 117.0 141.0 28.6 3
Radius of Curvature (ft)20.0 -29.0 52.0 --19.6 -22.7 25.8 --67.0 73.0 101.0 69.0 73.3 74.0 75.0 2.8 5
Rc:Bankfull width (ft/ft)0.9 -1.1 1.8 --0.7 -0.8 0.9 --3.0 3.1 4.2 2.8 3.0 3.0 3.1 N/A N/A
Meander Wavelength (ft)133.0 -297.0 479.0 --81.0 -81.0 81.0 --133.0 311.0 325.0 292.0 307.0 301.0 328.0 18.7 3
Meander Width Ratio 2.0 -2.5 3.9 --3.2 -3.2 3.2 --2.1 3.8 5.3 3.4 4.7 4.8 5.8 N/A N/A
Ri% / Ru% / P% / G% / S%
SC% / Sa% / G% / C% / B% / Be%
d16 / d35 / d50 / d84 / d95 (mm)
Reach Shear Stress (competency) lb/f2
Max part size (mm) mobilized at bankfull
Stream Power (transport capacity) W/m2
Rosgen Classification
Bankfull Velocity (fps)---
Bankfull Discharge (cfs)---
Valley length (ft)
Channel Thalweg length (ft)
Sinuosity (ft)
Water Surface Slope (Channel) (ft/ft)
BF slope (ft/ft)
Bankfull Floodplain Area (acres)
% of Reach with Eroding Banks
Channel Stability or Habitat Metric
Biological or Other
N/A - Not Applicable
- Information Unavailable
--
--
----
--
0.0064 0.0127 0.0071 0.0050
0.0071 0.0101 0.0062 0.0053
2,762 327 2,897 1,085
1.12 1.26 1.15 1.37
---
-
2,525 4,730 794
---
C4 C4 C4 C4
---
---
--
--0%,3%,9%,89%, 0%, 0%
--13, 24, 22, 35, 49N/A
Additional Reach Parameters
N/A
Table 11b. Baseline Stream Data Summary
Monitoring Year 6 - 2020
Dimension and Substrate - Riffle Only
N/A
Profile
Pattern
Substrate, Bed, and Transport parameters
N/A
N/A
Hogan Creek - Reach 2 (1,085 feet)
Regional Curve Pre-Existing Condition Reference Reach Data Design Monitoring Baseline
-
Hogan Creek Stream Mitigation Project
DMS Project No.94708
Parameter Gage
LL UL Eq. Min Mean Med Max SD n Min Mean Med Max SD n Min Med Max Min Mean Med Max SD n
Bankfull Width (ft)-----8.2 -----7.1 ----9.0 -6.5 7.1 7.1 7.6 -2
Floodprone Width (ft)--66.0 -----15.0 ----30.0 -21 24.9 24.9 28.8 -2
Bankfull Mean Depth (ft)-----1.5 -----0.9 ----0.7 -0.5 0.6 0.6 0.7 -2
Bankfull Max Depth (ft)--2.1 -----1.2 ----1.0 -0.9 1.1 1.1 1.2 -2
Bankfull Cross Sectional Area (ft2)-----12.1 -----6.6 ----6.5 -4.0 4.4 4.4 4.7 -2
Width/Depth Ratio --5.6 -----7.6 ----12.5 -8.9 11.6 11.6 14.2 -2
Entrenchment Ratio --8.0 -----2.1 ----3.3 -3.2 3.5 3.5 3.8 -2
Bank Height Ratio --1.6 -----1.0 ----1.0 -1.0 1.0 1.0 1.0 -2
Riffle Length (ft)---------------14.3 34.4 -67.3 -11
Riffle Slope (ft/ft)0.030 -0.033 0.056 --0.023 -0.033 0.036 --0.027 0.032 0.038 0.014 0.028 -0.052 -11
Pool Length (ft)---------------4.2 11.0 -27.1 -12
Pool Max depth (ft)--2.7 -----1.5 ----1.6 -1.2 2.0 -3.2 -12
Pool Spacing (ft)---------------13.1 54.8 -151.0 -11
Channel Beltwidth (ft)28.0 -42.0 56.0 --62.0 -67.5 73.0 --17.0 26.0 49.0 26.0 38.0 39.0 54.0 2.7 5
Radius of Curvature (ft)16.0 -18.5 21.0 --7.0 -16.0 25.0 --22.0 27.0 30.0 19.0 21.6 22.0 26.0 2.4 6
Rc:Bankfull width (ft/ft)2.0 -2.3 2.6 --1.0 -2.3 3.5 --2.4 3.0 3.3 2.7 3.0 3.1 3.7 N/A N/A
Meander Wavelength (ft)128.0 -159.0 190.0 --53.0 -58.5 64.0 --73.0 103.0 130.0 101.0 112.3 109.5 132.0 2.7 6
Meander Width Ratio 3.4 -5.1 6.8 --8.7 -9.5 10.3 --1.9 2.9 5.5 3.7 5.4 5.5 7.6 N/A N/A
Ri% / Ru% / P% / G% / S%
SC% / Sa% / G% / C% / B% / Be%
d16 / d35 / d50 / d84 / d95 (mm)
Reach Shear Stress (competency) lb/f2
Max part size (mm) mobilized at bankfull
Stream Power (transport capacity) W/m2
Rosgen Classification
Bankfull Velocity (fps)---
Bankfull Discharge (cfs)---
Valley length (ft)
Channel Thalweg length (ft)
Sinuosity (ft)
Water Surface Slope (Channel) (ft/ft)
BF slope (ft/ft)
Bankfull Floodplain Area (acres)
% of Reach with Eroding Banks
Channel Stability or Habitat Metric
Biological or Other
N/A - Not Applicable
- Information Unavailable
--
--
----
--
0.0235 0.0263 0.0223 0.0218
0.0312 0.0356 0.0312 0.0229
568 1,980 555 675
1.33 1.47 1.4 1.24
---
-
641 1,350 544
---
E4b E4b B4 B4
---
---
--
--N/A
--N/A
N/A
Table 11c. Baseline Stream Data Summary
Monitoring Year 6 - 2020
Dimension and Substrate - Riffle Only
Profile
Pattern
Substrate, Bed, and Transport parameters
Additional Reach Parameters
N/A
N/A
N/A
N/A
UT2 (675 feet)
Regional Curve Pre-Existing Condition Reference Reach Data Design Monitoring Baseline
-
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
Dimension and Substrate2,3 Base MY1 MY2 MY3 MY4 MY5 MY6 Base MY1 MY2 MY3 MY4 MY5 MY6 Base MY1 MY2 MY3 MY4 MY5 MY6
bankfull elevation (ft)990.8 990.8 990.8 990.8 991.0 990.9 991.0 990.7 990.7 990.7 990.7 990.6 990.7 990.9 987.6 987.6 987.6 987.6 987.4 987.3 987.3
low bank elevation (ft)990.8 990.8 990.9 990.9 990.8 990.8 990.7 990.7 990.7 990.7 990.6 990.6 990.7 990.9 987.6 987.6 987.7 987.9 987.9 987.4 987.6
Bankfull Width (ft)25.6 25.4 25.6 22.7 24.0 23.5 20.0 29.1 30.6 26.2 25.8 23.7 25.1 28.1 22.8 22.9 22.9 22.4 23.5 22.9 23.5
Floodprone Width (ft)>100 >100 >100 >100 >100 >100 >100 N/A N/A N/A N/A N/A N/A N/A >100 >100 >100 >100 >100 >100 >100
Bankfull Mean Depth (ft)1.7 1.6 1.7 1.8 1.6 1.7 1.9 2.0 2.2 2.0 2.1 2.2 2.4 2.2 1.8 2.0 2.4 2.5 2.2 1.9 2.0
Bankfull Max Depth (ft)2.9 2.9 3.2 3.3 3.2 3.4 3.0 4.5 4.9 4.9 4.4 4.6 4.2 4.2 2.7 3.6 4.0 4.0 3.9 3.5 3.8
Bankfull Cross Sectional Area (ft2)43.9 41.8 44.2 39.9 37.6 41.0 37.1 57.6 66.7 64.2 54.9 51.1 59.8 62.5 41.4 45.9 54.6 55.3 52.0 43.9 47.3
Bankfull Width/Depth Ratio 14.9 15.4 14.8 12.9 15.3 13.4 10.7 14.7 14.1 10.7 12.1 11.0 10.6 12.7 12.6 11.4 9.6 9.1 10.6 11.9 11.7
Bankfull Entrenchment Ratio >3.9 >3.9 >3.8 >4.4 >4.2 >4.3 >5.0 N/A N/A N/A N/A N/A N/A N/A >4.4 >4.4 >4.4 >4.5 >4.3 >4.4 >4.3
Bankfull Bank Height Ratio 1.0 1.0 1.0 1.0 <1.0 <1.0 <1.0 N/A N/A N/A N/A N/A N/A N/A 1.0 1.0 1.0 1.1 1.1 1.0 1.1
d50 (mm)19 23 17 41 42 52 26 N/A N/A N/A N/A N/A N/A N/A 26 29 6.9 1.0 7.1 32 25
Dimension and Substrate2,3 Base MY1 MY2 MY3 MY4 MY5 MY6 Base MY1 MY21 MY3 MY4 MY5 MY6 Base MY1 MY2 MY3 MY4 MY5 MY6
bankfull elevation (ft)984.0 984.0 984.0 984.0 984.0 983.5 984.1 983.6 983.6 983.6 983.6 983.3 983.7 983.7 982.1 982.1 982.1 982.1 981.9 981.6 981.6
low bank elevation (ft)984.0 984.0 984.0 984.0 984.0 983.5 984.1 983.6 983.6 983.7 983.8 983.8 983.6 983.6 982.1 982.1 982.0 981.9 981.9 981.7 981.5
Bankfull Width (ft)44.6 45.5 44 43.2 32.1 25.5 22.5 24.2 24.8 23.6 24.7 26.1 26.2 25.5 24.7 28.1 28.2 28.7 26.1 29.0 26.9
Floodprone Width (ft)N/A N/A N/A N/A N/A N/A N/A >100 >100 >100 >100 >100 >100 >100 >100 >100 >100 >100 >100 >100 >100
Bankfull Mean Depth (ft)2.2 2.1 1.6 1.7 1.8 1.9 2.1 1.9 2.0 2.4 2.5 2.2 1.6 1.6 2.3 2.0 2.2 2.1 2.2 2.1 2.0
Bankfull Max Depth (ft)4.2 4.3 4.2 4.6 4.0 3.3 3.4 3.2 3.6 3.9 3.6 3.4 2.7 2.7 3.6 3.8 3.9 3.8 4.1 3.2 3.2
Bankfull Cross Sectional Area (ft2)98.9 95.4 69.1 72.5 58.6 48.5 47.8 45.2 49.2 56.6 61 58.2 42.7 40.6 56.6 56.5 61.1 61.4 56.5 60.1 54.8
Bankfull Width/Depth Ratio 20.1 21.7 28.1 25.7 17.5 13.4 10.6 13.0 12.5 9.8 10 11.7 16 16 10.8 14.0 13 13.4 12.0 14.0 13.2
Bankfull Entrenchment Ratio N/A N/A N/A N/A N/A N/A N/A >4.1 >4.0 >4.2 >4.0 >3.8 >3.8 >3.9 >4.0 >3.6 >3.5 >3.5 >3.8 >3.4 >3.7
Bankfull Bank Height Ratio N/A N/A N/A N/A N/A N/A N/A 1.0 1.0 1.0 1.0 1.2 <1.0 <1.0 1.0 1.0 1.0 <1.0 1.0 1.0 1.0
d50 (mm)N/A N/A N/A N/A N/A N/A N/A 27 32 6.4 41 29 47 34 31 30 0.18 64 56 63 51
Dimension and Substrate2,3 Base MY1 MY21 MY3 MY4 MY5 MY6 Base MY1 MY2 MY3 MY4 MY5 MY6 Base MY1 MY2 MY3 MY4 MY5 MY6
bankfull elevation (ft)989.4 989.4 989.4 989.4 989.7 989.5 989.5 988.2 988.2 988.2 988.2 988.4 988.3 988.3 986.4 986.4 986.4 986.4 986.9 987.0 987.0
low bank elevation (ft)989.4 989.4 989.3 989.4 989.7 989.8 989.7 988.2 988.3 988.3 988.3 988.4 988.3 988.3 986.4 986.5 986.4 986.5 986.8 986.9 987.0
Bankfull Width (ft)7.6 6.9 7.9 6.2 8.6 7.4 8.0 6.9 7.1 7.1 5.7 6.6 5.8 5.7 6.5 6.8 6.8 5.5 7.9 5.9 6.5
Floodprone Width (ft)29 29 30 29 26 35 32 N/A N/A N/A N/A N/A N/A N/A 21 21 19 19 18 28 26
Bankfull Mean Depth (ft)0.5 0.5 0.6 0.6 0.5 0.8 0.7 0.6 0.7 0.7 0.7 0.6 0.7 0.7 0.7 0.7 0.6 0.5 0.5 0.7 0.7
Bankfull Max Depth (ft)0.9 1.0 1.1 1.0 1.0 1.4 1.2 1.0 1.3 1.0 1.3 1.2 1.2 1.0 1.2 1.1 0.9 0.8 1.0 1.1 1.0
Bankfull Cross Sectional Area (ft2)4.0 3.5 4.9 3.5 4.3 5.8 5.5 4.4 5.1 4.7 4.3 4.0 4.2 4.0 4.7 4.6 4.1 2.7 4.2 4.0 4.6
Bankfull Width/Depth Ratio 14.2 13.6 12.8 10.8 17.2 9.5 11.8 10.7 9.8 10.8 7.7 10.7 8.0 8.2 8.9 10.3 11.3 11.2 15.0 8.6 9.2
Bankfull Entrenchment Ratio 3.8 4.2 3.8 4.7 3.0 4.7 4.0 N/A N/A N/A N/A N/A N/A N/A 3.2 3.0 2.8 3.4 2.2 4.8 4.0
Bankfull Bank Height Ratio 1.0 1.0 1.0 1.0 1.0 1.3 1.2 N/A N/A N/A N/A N/A N/A N/A 1.0 1.0 1.0 1.1 <1.0 <1.0 1.0
d50 (mm)N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
N/A - Not Applicable
1Adjustment in survey points included in bankfull calculations resulting in change to previous monitoring year bankfull dimensions.
3MY4-MY6 Bank Height Ratio is calculated based on the As-built (MY0) cross-sectional area as described in the Standard Measurement of the BHR Monitoring Parameter document provided by NCIRT and NCDMS (9/2018). The
remainder of the bankfull dimensions are calculated based on the current year's low bank height. MY4 dimensions were updated in MY5.
Table 12. Morphology and Hydraulic Summary (Dimensional Parameters - Cross-Section)
Monitoring Year 6 - 2020
Hogan Reach 2 (1,085 feet)
2Prior to MY4, bankfull dimensions were calculated using a fixed bankfull elevation.
UT2 (675 feet)
Hogan Reach 1 (1,532 feet)
Cross-Section 7 (Riffle)Cross-Section 8 (Pool)Cross-Section 9 (Riffle)
Cross-Section 1 (Riffle)Cross-Section 2 (Pool)Cross-Section 3 (Riffle)
Cross-Section 4 (Pool)Cross-Section 5 (Riffle)Cross-Section 6 (Riffle)
DMS Project No. 94708
Parameter
Min Mean Med Max SD n Min Mean Med Max SD n Min Mean Med Max SD n Min Mean Med Max SD n Min Mean Med Max SD n Min Mean Med Max SD n Min Mean Med Max SD n
Bankfull Width (ft)22.8 24.2 24.2 25.6 N/A 2 22.9 24.2 24.2 25.4 N/A 2 22.9 24.25 24.25 25.6 N/A 2 22.4 22.6 22.6 22.7 N/A 2 23.5 23.8 23.8 24.0 N/A 2 22.9 23.2 23.2 23.5 N/A 2 20.0 21.8 21.8 23.5 N/A 2
Floodprone Width (ft)>100 >100 >100 >100 N/A 2 >100 >100 >100 >100 N/A 2 >100 >100 >100 >100 N/A 2 >100 >100 >100 >100 N/A 2 >100 >100 >100 >100 N/A 2 >100 >100 >100 >100 N/A 2 >100 >100 >100 >100 N/A 2
Bankfull Mean Depth (ft)1.7 1.8 1.8 1.8 N/A 2 1.6 1.8 1.8 2.0 N/A 2 1.7 2.1 2.1 2.4 N/A 2 1.8 2.2 2.2 2.5 N/A 2 1.6 1.9 1.9 2.2 N/A 2 1.7 1.8 1.8 1.9 N/A 2 1.9 1.95 1.95 2.0 N/A 2
Bankfull Max Depth (ft)2.7 2.8 2.8 2.9 N/A 2 2.9 3.3 3.3 3.6 N/A 2 3.2 3.6 3.6 4 N/A 2 3.3 3.7 3.7 4.0 N/A 2 3.2 3.6 3.6 3.9 N/A 2 3.4 3.5 3.5 3.5 N/A 2 3.0 3.4 3.4 3.8 N/A 2
Bankfull Cross Sectional Area (ft2)41.4 42.7 42.7 43.9 N/A 2 41.8 43.9 43.9 45.9 N/A 2 44.2 49.4 49.4 54.6 N/A 2 39.9 47.6 47.6 55.3 N/A 2 37.6 44.8 44.8 52.0 N/A 2 41.0 42.5 42.5 43.9 N/A 2 37.1 42.2 42.2 47.3 N/A 2
Width/Depth Ratio 12.6 13.8 13.8 14.9 N/A 2 11.4 13.4 13.4 15.4 N/A 2 9.6 12.2 12.2 14.8 N/A 2 9.1 11.0 11.0 12.9 N/A 2 10.6 13.0 13.0 15.3 N/A 2 11.9 12.7 12.7 13.4 N/A 2 10.7 11.2 11.2 11.7 N/A 2
Entrenchment Ratio >3.9 >4.2 >4.2 >4.4 N/A 2 >3.9 >4.2 >4.2 >4.4 N/A 2 >3.8 >4.1 >4.1 >4.4 N/A 2 >4.4 >4.45 >4.45 >4.5 N/A 2 >4.2 >4.25 >4.25 >4.3 N/A 2 >4.3 >4.35 >4.35 >4.4 N/A 2 >4.3 >4.65 >4.65 >5.0 N/A 2
Bank Height Ratio 1.0 1.0 1.0 1.0 N/A 2 1.0 1.0 1.0 1.0 N/A 2 1.0 1.0 1.0 1.0 N/A 2 1.0 1.1 1.1 1.1 N/A 2 <1.0 1.0 1.0 1.1 N/A 2 <1.0 1.0 1.0 1.0 N/A 2 <1.0 1.0 1.0 1.1 N/A 2
Riffle Length (ft)37.17 58.9 N/A 98.4 N/A 8 15.0 62.1 73.5 98.0 N/A 8 11.7 23.2 23.6 38 N/A 10 10.1 29.0 26.1 53.3 N/A 10 16.6 43.0 37.4 97.6 N/A 11 11.0 71.0 64.0 193.0 N/A 9 7.0 69.0 56.0 180.0 N/A 9
Riffle Slope (ft/ft)0.002 0.010 N/A 0.018 N/A 8 0.006 0.013 0.011 0.020 N/A 8 0.011 0.05 0.022 0.057 N/A 10 0.011 0.029 0.022 0.072 N/A 10 0.007 0.023 0.021 0.051 N/A 11 0.006 0.022 0.013 0.080 N/A 9 0.005 0.015 0.012 0.035 N/A 9
Pool Length (ft)25.0 62.6 N/A 88.0 N/A 13 20.0 67.1 76.0 105.0 N/A 13 30.87 85.3 89.5 140.8 N/A 13 32.4 100.7 115.4 170.7 N/A 12 13.8 98.1 99.7 172.0 N/A 11 67.0 170.0 103.0 170.0 N/A 9 69.0 155.0 95.0 155.0 N/A 9
Pool Max depth (ft)2.5 3.2 N/A 4.1 N/A 13 2.8 3.7 3.4 4.8 N/A 13 2.3 3.7 3.6 5.1 N/A 13 2.4 3.8 3.8 5.8 N/A 12 3.2 4.0 3.9 5.6 N/A 11 3.0 4.2 4.0 6.3 N/A 9 2.9 4.2 4.3 6.0 N/A 9
Pool Spacing (ft)73.3 120.9 N/A 200.1 N/A 12 52.0 112.8 111.0 148.0 N/A 12 57 110.1 103 204.0 N/A 12 46.9 122.5 120.9 180.5 N/A 11 61.5 132.0 129.1 230.6 N/A 10 104.0 162.0 134.0 372.0 N/A 8 103.0 165.0 135.0 388.0 N/A 8
Channel Beltwidth (ft)63.0 96.5 101.0 121.0 24.9 4
Radius of Curvature (ft)70.0 76.5 75.0 86.0 6.8 4
Rc:Bankfull width (ft/ft)2.9 3.2 3.1 3.6 N/A N/A
Meander Wavelength (ft)165.0 263.7 306.0 320.0 85.7 3
Meander Width Ratio 2.6 4.0 4.2 5.0 N/A N/A
Rosgen Classification
Channel Thalweg length (ft)
Sinuosity (ft)
Water Surface Slope (Channel) (ft/ft)
BF slope (ft/ft)
Ri% / Ru% / P% / G% / S%------------------------------------------
SC% / Sa% / G% / C% / B% / Be%0%3.5%96%0.5%0%0%0%0.5%98%1.5%0%0%13%21.0%64%3.0%0%0%12%20%53%14.5%0.5%0%5%23%58%14.0%0%0%0%2%72%26%0%0%0%5%86%9%0%0%
d16 / d35 / d50 / d84 / d95 /14 19 23 41 56 13 21 27 44 62 0.19 6.1 10 33 50 0.20 5.6 21 63 139 0.40 7.5 17 61 105 19 31 42 75 90 10 19 25 54 84
% of Reach with Eroding Banks
Channel Stability or Habitat Metric
Biological or Other
N/A - Not Applicable
- Information Unavailable
1Prior to MY4, bankfull dimensions were calculated using a fixed bankfull elevation.
2MY4-MY6 Bank Height Ratio is calculated based on the As-built (MY0) cross-sectional area as described in the Standard Measurement of the BHR Monitoring Parameter document provided by NCIRT and NCDMS (9/2018). The remainder of the bankfull dimensions are calculated based on the current year's low bank height. MY4 dimensions were updated in MY5.
0%7%1%9%9%
C4 C4
1,532
<1%
C4
1,532
1.18
0.0067
MY6
C4
1,532
1.18
0.0061
Dimension and Substrate - Riffle only 1,2
Profile
Pattern
Additional Reach Parameters
0.00640.0063
Baseline MY1 MY2 MY3 MY4
Table 13a. Monitoring Data - Stream Reach Data Summary
Hogan Creek Stream Mitigation Project
9%
C4
1,532
1.18
0.0064
0.0068
C4
1,532
1.18
Monitoring Year 6 - 2020
MY5
Hogan Creek-Reach 1 (1,532 feet)
0.0067 0.0069
C4
1,532
1.18
0.0062
0.0066
0.0060
0.0067
0.0070
0.0069
1,530
1.18 1.18
Parameter
Min Mean Med Max SD n Min Mean Med Max SD n Min Mean Med Max SD n Min Mean Med Max SD n Min Mean Med Max SD n Min Mean Med Max SD n Min Mean Med Max SD n
Bankfull Width (ft)24.2 24.5 24.5 24.7 N/A 2 24.8 26.5 26.5 28.1 N/A 2 23.6 25.9 25.9 28.2 N/A 2 24.7 26.7 26.7 28.7 N/A 2 26.1 26.1 26.1 26.1 N/A 2 26.2 27.6 27.6 29.0 N/A 2 25.5 26.2 26.2 26.9 N/A 2
Floodprone Width (ft)>100 >100 >100 >100 N/A 2 >100 >100 >100 >100 N/A 2 >100 >100 >100 >100 N/A 2 >100 >100 >100 >100 N/A 2 >100 >100 >100 >100 N/A 2 >100 >100 >100 >100 N/A 2 >100 >100 >100 >100 N/A 2
Bankfull Mean Depth (ft)1.9 2.1 2.1 2.3 N/A 2 2.0 2.0 2.0 2.0 N/A 2 2.2 2.3 2.3 2.4 N/A 2 2.1 2.3 2.3 2.5 N/A 2 2.2 2.2 2.2 2.2 N/A 2 1.6 1.9 1.9 2.1 N/A 2 1.6 1.8 1.8 2.0 N/A 2
Bankfull Max Depth (ft)3.2 3.4 3.4 3.6 N/A 2 3.6 3.7 3.7 3.8 N/A 2 3.9 3.9 3.9 3.9 N/A 2 3.6 3.7 3.7 3.8 N/A 2 3.4 3.8 3.8 4.1 N/A 2 2.7 3.0 3.0 3.2 N/A 2 2.7 2.95 2.95 3.2 N/A 2
Bankfull Cross Sectional Area (ft2)45.2 50.9 50.9 56.6 N/A 2 49.2 52.9 52.9 56.5 N/A 2 56.6 58.9 58.9 61.1 N/A 2 61.0 61.2 61.2 61.4 N/A 2 56.5 57.4 57.4 58.2 N/A 2 42.7 51.4 51.4 60.1 N/A 2 40.6 47.7 47.7 54.8 N/A 2
Width/Depth Ratio 10.8 11.9 11.9 13.0 N/A 2 12.5 13.3 13.3 14.0 N/A 2 9.8 11.4 11.4 13.0 N/A 2 10.0 11.7 11.7 13.4 N/A 2 11.7 11.9 11.9 12.0 N/A 2 14.0 15.0 15.0 16.0 N/A 2 13.2 14.6 14.6 16.0 N/A 2
Entrenchment Ratio >4.0 >4.1 >4.1 >4.1 N/A 2 >3.6 >3.8 >3.8 >4.0 N/A 2 >3.5 >3.75 >3.75 >4.0 N/A 2 >3.5 >3.75 >3.75 >4.0 N/A 2 >3.8 >3.8 >3.8 >3.8 N/A 2 >3.4 >3.6 >3.6 >3.8 N/A 2 3.7 3.8 3.8 3.9 N/A 2
Bank Height Ratio 1.0 1.0 1.0 1.0 N/A 2 1.0 1.0 1.0 1.0 N/A 2 1.0 1.0 1.0 1.0 N/A 2 0.9 1.0 1.0 1.0 N/A 2 1.0 1.1 1.1 1.2 N/A 2 <1.0 1.0 1.0 1.0 N/A 2 <1.0 1.0 1.0 1.0 N/A 2
Riffle Length (ft)95.6 111.6 N/A 130.3 N/A 5 56.0 91.0 101.0 125.0 N/A 5 24.7 51.8 46.9 97.6 N/A 5 19.6 46.3 43.2 68.2 N/A 5 51.5 94.0 69.9 151.2 N/A 5 69.0 110.0 107.0 157.0 N/A 5 41.9 63.5 56.1 99.8 N/A 5
Riffle Slope (ft/ft)0.004 0.005 N/A 0.007 N/A 5 0.004 0.009 0.007 0.018 N/A 5 0.008 0.012 0.01 0.017 N/A 5 0.006 0.009 0.007 0.014 N/A 5 0.004 0.0089 0.009 0.012 N/A 5 0.007 0.0077 0.007 0.010 N/A 5 0.010 0.013 0.012 0.019 N/A 5
Pool Length (ft)43.7 68.8 N/A 117.1 N/A 5 60.0 87.3 64.0 135.0 N/A 5 29.91 74.4 75.4 107.0 N/A 5 54.0 71.1 58.1 117.1 N/A 5 42.3 98.1 87.5 184.1 N/A 5 45.0 118.0 86.0 118.0 N/A 5 50.2 171.2 99.9 171.2 N/A 5
Pool Max depth (ft)3.8 4.7 N/A 5.8 N/A 5 4.0 4.8 4.6 5.7 N/A 5 3.77 4.4 4.4 5.4 N/A 5 3.5 4.5 4.4 6.0 N/A 5 4.2 4.9 4.5 6.0 N/A 5 4.1 4.8 5.0 5.7 N/A 5 3.0 4.5 4.3 6.0 N/A 5
Pool Spacing (ft)164.1 208.4 N/A 253.1 N/A 4 169.0 196.5 189.5 238.0 N/A 4 93.7 134.2 129.4 201.0 N/A 4 76.8 140.8 142.6 201.3 N/A 4 188.1 202.1 203.0 214.4 N/A 4 162.0 198.0 203.0 222.0 N/A 4 41.0 140.1 158.5 202.3 N/A 4
Channel Beltwidth (ft)84.0 114.0 117.0 141.0 28.6 3
Radius of Curvature (ft)69.0 73.3 74.0 75.0 2.8 5
Rc:Bankfull width (ft/ft)2.8 3.0 3.0 3.1 N/A N/A
Meander Wavelength (ft)292.0 307.0 301.0 328.0 18.7 3
Meander Width Ratio 3.4 4.7 4.8 5.8 N/A N/A
Rosgen Classification
Channel Thalweg length (ft)
Sinuosity (ft)
Water Surface Slope (Channel) (ft/ft)
BF slope (ft/ft)
Ri% / Ru% / P% / G% / S%------------------------------------------
SC% / Sa% / G% / C% / B% / Be%0%3%9%89%0%0%0%0%99%1%0%0%17%50.0%31%2.0%0%0%0%13.0%51%32%4%0%0%5.0%69%23%3%0%0%4%53%39%2%2%0%4%63%32%2%0%
d16 / d35 / d50 / d84 / d95 /13 24 22 35 49 18 25 31 52 70 0.062 0.16 0.3 17 40 7.1 31 46 138 243 13 24 37 95 224 23 47 58 110 180 15 29 43 111 214
% of Reach with Eroding Banks
Channel Stability or Habitat Metric
Biological or Other
N/A - Not Applicable
- Information Unavailable
1Prior to MY4, bankfull dimensions were calculated using a fixed bankfull elevation.
2MY4-MY6 Bank Height Ratio is calculated based on the As-built (MY0) cross-sectional area as described in the Standard Measurement of the BHR Monitoring Parameter document provided by NCIRT and NCDMS (9/2018). The remainder of the bankfull dimensions are calculated based on the current year's low bank height. MY4 dimensions were updated in MY5.
0.0050
2%
0.0067
2%
Dimension and Substrate - Riffle only 1,2
Profile
Pattern
Additional Reach Parameters
MY6
C4
1,085
1.37
0.0054
1.37
0.0053
0.0062
10%
C4
1,085
C4
1,085
1.37
0.0052
Hogan Creek-Reach 2 (1,085 feet)
Baseline MY1 MY2 MY3 MY4 MY5
C4 C4
1,085 1,085
C4
1,085
1.37 1.37
0.0050 0.0045
0.0053 0.0053
0.005
0.0053
0%2%
Table 13b. Monitoring Data - Stream Reach Data Summary
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
Monitoring Year 6 - 2020
1.37
0.0054
0.0057
6%13%
C4
1,085
1.37
DMS Project No. 94708
Parameter
Min Mean Med Max SD n Min Mean Med Max SD n Min Mean Med Max SD n Min Mean Med Max SD n Min Mean Med Max SD n Min Mean Med Max SD n Min Mean Med Max SD n
Bankfull Width (ft)6.5 7.1 7.1 7.6 N/A 2 6.8 6.9 6.9 6.9 N/A 2 6.8 7.4 7.4 7.9 N/A 2 5.5 5.85 5.85 6.2 N/A 2 7.9 8.3 8.3 8.6 N/A 2 5.9 6.7 6.7 7.4 N/A 2 6.5 7.25 7.25 8.0 N/A 2
Floodprone Width (ft)21 24.9 24.9 28.8 N/A 2 20.6 24.8 24.8 29.0 N/A 2 19.2 24.6 24.6 30 N/A 2 18.8 24.05 24.05 29.3 N/A 2 17.8 21.9 21.9 25.9 N/A 2 27.9 31.3 31.3 34.6 N/A 2 >100 >100 >100 >100 N/A 2
Bankfull Mean Depth (ft)0.5 0.6 0.6 0.7 N/A 2 0.5 0.6 0.6 0.7 N/A 2 0.6 0.6 0.6 0.6 N/A 2 0.5 0.55 0.55 0.6 N/A 2 0.5 0.5 0.5 0.5 N/A 2 0.7 0.8 0.8 0.8 N/A 2 0.7 0.7 0.7 0.7 N/A 2
Bankfull Max Depth (ft)0.9 1.1 1.1 1.2 N/A 2 1.0 1.1 1.1 1.1 N/A 2 0.9 1.0 1.0 1.1 N/A 2 0.8 0.9 0.9 1 N/A 2 1.0 1.0 1.0 1.0 N/A 2 1.1 1.3 1.3 1.4 N/A 2 1 1.1 1.1 1.2 N/A 2
Bankfull Cross Sectional Area (ft2)4.0 4.4 4.4 4.7 N/A 2 3.5 4.1 4.1 4.6 N/A 2 4.1 4.5 4.5 4.9 N/A 2 2.7 3.1 3.1 3.5 N/A 2 4.2 4.3 4.3 4.3 N/A 2 4.0 4.9 4.9 5.8 N/A 2 4.6 5.05 5.05 5.5 N/A 2
Width/Depth Ratio 8.9 11.6 11.6 14.2 N/A 2 10.3 12.0 12.0 13.6 N/A 2 11.3 12.1 12.1 12.8 N/A 2 10.8 11 11 11.2 N/A 2 15.0 16.1 16.1 17.2 N/A 2 8.6 9.1 9.1 9.5 N/A 2 9.2 10.5 10.5 11.8 N/A 2
Entrenchment Ratio 3.2 3.5 3.5 3.8 N/A 2 3.0 3.6 3.6 4.2 N/A 2 2.8 3.3 3.3 3.8 N/A 2 3.4 4.05 4.05 4.7 N/A 2 2.2 2.6 2.6 3.0 N/A 2 4.7 4.8 4.8 4.8 N/A 2 4.0 4.0 4.0 4.0 N/A 2
Bank Height Ratio 1.0 1.0 1.0 1.0 N/A 2 1.0 1.0 1.0 1.0 N/A 2 1.0 1.0 1.0 1.0 N/A 2 1 1.05 1.05 1.1 N/A 2 <1.0 <1.0 <1.0 1.0 N/A 2 <1.0 1.1 1.1 1.3 N/A 2 1.0 1.2 1.2 1.3 N/A 2
Riffle Length (ft)14.3 34.4 N/A 67.3 N/A 11 12.0 28.9 29.0 62.0 N/A 11 7.88 29.3 25.6 69.8 N/A 11 12.4 26.8 24.4 45.9 N/A 11 5.2 19.7 16.6 55.4 N/A 16 6.0 34.0 21.0 178.0 N/A 11 3.7 24.7 15.7 132.0 N/A 15
Riffle Slope (ft/ft)0.014 0.028 N/A 0.052 N/A 11 0.014 0.026 0.024 0.050 N/A 11 0.012 0.041 0.030 0.099 N/A 11 0.011 0.036 0.032 0.071 N/A 11 0.023 0.050 0.044 0.130 N/A 16 0.008 0.049 0.047 0.135 N/A 11 0.009 0.043 0.039 0.116 N/A 15
Pool Length (ft)4.2 11.0 N/A 27.1 N/A 12 7.0 13.3 12.0 28.0 N/A 13 7.07 17.2 13.7 50.4 N/A 13 7.9 19.5 19.4 35.6 N/A 10 10.0 18.8 18.0 39.8 N/A 16 14.0 37.0 22.0 37.0 N/A 9 13.2 38.8 18.3 38.8 N/A 14
Pool Max depth (ft)1.2 2.0 N/A 3.2 N/A 12 1.1 1.7 1.7 2.4 N/A 13 1.14 1.7 1.7 2.3 N/A 13 1.0 1.8 1.9 2.8 N/A 10 0.8 1.6 1.6 2.6 N/A 15 1.1 1.8 1.8 2.7 N/A 9 0.9 1.7 1.8 2.5 N/A 14
Pool Spacing (ft)13.1 54.8 N/A 151.0 N/A 11 8.0 50.4 43.5 145.0 N/A 12 11.9 47.8 35.9 137.8 N/A 12 22.1 57.6 48.6 134.3 N/A 9 14.6 42.0 36.8 142.0 N/A 14 19.0 73.0 47.0 241.0 N/A 8 12.0 46.9 44.3 154.3 N/A 13
Channel Beltwidth (ft)26.0 38.0 39.0 54.0 2.7 5
Radius of Curvature (ft)19.0 21.6 22.0 26.0 2.4 6
Rc:Bankfull width (ft/ft)2.7 3.0 3.1 3.7 N/A N/A
Meander Wavelength (ft)101.0 112.3 109.5 132.0 2.7 6
Meander Width Ratio 3.7 5.4 5.5 7.6 N/A N/A
Rosgen Classification
Channel Thalweg length (ft)
Sinuosity (ft)
Water Surface Slope (Channel) (ft/ft)
BF slope (ft/ft)
Ri% / Ru% / P% / G% / S%------------------------------------------
SC% / Sa% / G% / C% / B% / Be%---------------------------------------
d16 / d35 / d50 / d84 / d95 /---------------------------------
% of Reach with Eroding Banks
Channel Stability or Habitat Metric
Biological or Other
N/A - Not Applicable
- Information Unavailable
1Prior to MY4, bankfull dimensions were calculated using a fixed bankfull elevation.
2MY4-MY6 Bank Height Ratio is calculated based on the As-built (MY0) cross-sectional area as described in the Standard Measurement of the BHR Monitoring Parameter document provided by NCIRT and NCDMS (9/2018). The remainder of the bankfull dimensions are calculated based on the current year's low bank height. MY4 dimensions were updated in MY5.
MY6
0.0213
0%0%0%
B4
675
1.24
0.0213
675
B4
675
1.24
0.0201
0.0216
0%
1.24
0.0199
0.0224
0%
Dimension and Substrate - Riffle only 1,2
Profile
Pattern
Additional Reach Parameters
B4
Monitoring Year 6 - 2020
UT2 (675 feet)
Baseline MY1 MY2 MY3 MY4 MY5
B4
675
1.24
0.0215
0.0224
1.24
0.0205
0.0222
0%
Table 13c. Monitoring Data - Stream Reach Data Summary
Hogan Creek Stream Mitigation Project
0%
1.24 1.24
0.0218 0.0208
0.0229 0.0226
B4 B4
675 670
B4
675
Cross-Section 1-Hogan Creek Reach 1
Bankfull Dimensions
37.1 x-section area (ft.sq.)
20.0 width (ft)
1.9 mean depth (ft)
3.0 max depth (ft)
21.6 wetted perimeter (ft)
1.7 hydraulic radius (ft)
10.7 width-depth ratio
100.0 W flood prone area (ft)
5.0 entrenchment ratio
0.9 low bank height ratio
Survey Date:4/2020
Field Crew:Kee Mapping & Surveying
View Downstream
Monitoring Year 6 - 2020
Cross-Section Plots
Hogan Creek Stream Mitigation Project
NCDMS Project No. 94708
987
988
989
990
991
992
993
994
5 10 15 20 25 30 35 40 45Elevation (ft)Width (ft)
22+67 Riffle
MY0 (6/2015)MY1 (12/2015)MY2 (6/2016)MY3 (6/2017)
MY4 (7/2018)MY5 (7/2019)MY6 (4/2020)Bankfull (4/2020)
Floodprone Area (4/2020)MY0 BKF XS Area Elevation
Cross-Section 2-Hogan Creek Reach 1
Bankfull Dimensions
62.5 x-section area (ft.sq.)
28.1 width (ft)
2.2 mean depth (ft)
4.2 max depth (ft)
30.3 wetted perimeter (ft)
2.1 hydraulic radius (ft)
12.7 width-depth ratio
Survey Date:4/2020
Field Crew:Kee Mapping & Surveying
View Downstream
Monitoring Year 6 - 2020
Cross-Section Plots
Hogan Creek Stream Mitigation Project
NCDMS Project No. 94708
985
986
987
988
989
990
991
992
993
0 10 20 30 40 50 60Elevation (ft)Width (ft)
23+07 Pool
MY0 (6/2015)MY1 (12/2015)MY2 (6/2016)MY3 (6/2017)MY4 (7/2018)MY5 (7/2019)MY6 (4/2020)Bankfull (4/2020)
Cross-Section 3-Hogan Creek Reach 1
Bankfull Dimensions
47.3 x-section area (ft.sq.)
23.5 width (ft)
2.0 mean depth (ft)
3.8 max depth (ft)
25.3 wetted perimeter (ft)
1.9 hydraulic radius (ft)
11.7 width-depth ratio
100.0 W flood prone area (ft)
4.3 entrenchment ratio
1.1 low bank height ratio
Survey Date:4/2020
Field Crew:Kee Mapping & Surveying
View Downstream
Monitoring Year 6 - 2020
Cross-Section Plots
Hogan Creek Stream Mitigation Project
NCDMS Project No. 94708
983
984
985
986
987
988
989
990
991
992
0 10 20 30 40 50Elevation (ft)Width (ft)
26+78 Riffle
MY0 (6/2015)MY1 (12/2015)MY2 (6/2016)MY3 (6/2017)
MY4 (7/2018)MY5 (7/2019)MY6 (4/2020)Bankfull (4/2020)
Floodprone Area (4/2020)MY0 BKF XS Area Elevation
Cross-Section 4-Hogan Creek Reach 2
Bankfull Dimensions
47.8 x-section area (ft.sq.)
22.5 width (ft)
2.1 mean depth (ft)
3.4 max depth (ft)
24.4 wetted perimeter (ft)
2.0 hydraulic radius (ft)
10.6 width-depth ratio
Survey Date:4/2020
Field Crew:Kee Mapping & Surveying
View Downstream
Monitoring Year 6 - 2020
Cross-Section Plots
Hogan Creek Stream Mitigation Project
NCDMS Project No. 94708
979
980
981
982
983
984
985
986
987
0 10 20 30 40 50 60 70 80Elevation (ft)Width (ft)
33+68 Pool
MY0 (6/2015)MY1 (12/2015)MY2 (6/2016)MY3 (6/2017)MY4 (7/2018)MY5 (7/2019)MY6 (4/2020)Bankfull (4/2020)
Cross-Section 5-Hogan Creek Reach 2
Bankfull Dimensions
40.6 x-section area (ft.sq.)
25.5 width (ft)
1.6 mean depth (ft)
2.7 max depth (ft)
26.6 wetted perimeter (ft)
1.5 hydraulic radius (ft)
16.0 width-depth ratio
100.0 W flood prone area (ft)
3.9 entrenchment ratio
0.9 low bank height ratio
Survey Date:4/2020
Field Crew:Kee Mapping & Surveying
View Downstream
Monitoring Year 6 - 2020
Cross-Section Plots
Hogan Creek Stream Mitigation Project
NCDMS Project No. 94708
979
980
981
982
983
984
985
986
987
0 10 20 30 40 50 60Elevation (ft)Width (ft)
34+49 Riffle
MY0 (6/2015)MY1 (12/2015)MY2 (6/2016)MY3 (6/2017)
MY4 (7/2018)MY5 (7/2019)MY6 (4/2020)Bankfull (4/2020)
Floodprone Area (4/2020)MY0 BKF XS Area Elevation
Cross-Section 6-Hogan Creek Reach 2
Bankfull Dimensions
54.8 x-section area (ft.sq.)
26.9 width (ft)
2.0 mean depth (ft)
3.2 max depth (ft)
28.7 wetted perimeter (ft)
1.9 hydraulic radius (ft)
13.2 width-depth ratio
100.0 W flood prone area (ft)
3.7 entrenchment ratio
1.0 low bank height ratio
Survey Date:4/2020
Field Crew:Kee Mapping & Surveying
View Downstream
Monitoring Year 6 - 2020
Cross-Section Plots
Hogan Creek Stream Mitigation Project
NCDMS Project No. 94708
977
978
979
980
981
982
983
984
985
986
0 10 20 30 40 50 60Elevation (ft)Width (ft)
37+95 Riffle
MY0 (6/2015)MY1 (12/2015)MY2 (6/2016)MY3 (6/2017)
MY4 (7/2018)MY5 (7/2019)MY6 (4/2020)Bankfull (4/2020)
Floodprone Area (4/2020)MY0 BKF XS Area Elevation
Cross-Section 7-UT2
Bankfull Dimensions
5.5 x-section area (ft.sq.)
8.0 width (ft)
0.7 mean depth (ft)
1.2 max depth (ft)
8.8 wetted perimeter (ft)
0.6 hydraulic radius (ft)
11.8 width-depth ratio
31.9 W flood prone area (ft)
4.0 entrenchment ratio
1.2 low bank height ratio
Survey Date:4/2020
Field Crew:Kee Mapping & Surveying
View Downstream
Monitoring Year 6 - 2020
Cross-Section Plots
Hogan Creek Stream Mitigation Project
NCDMS Project No. 94708
988
989
990
991
992
15 20 25 30 35 40 45 50Elevation (ft)Width (ft)
13+25 Riffle
MY0 (6/2015)MY1 (12/2015)MY2 (6/2016)MY3 (6/2017)
MY4 (7/2018)MY5 (7/2019)MY6 (4/2020)Bankfull (4/2020)
Floodprone Area (4/2020)MY0 BKF XS Area Elevation
Cross-Section 8-UT2
Bankfull Dimensions
4.0 x-section area (ft.sq.)
5.7 width (ft)
0.7 mean depth (ft)
1.0 max depth (ft)
6.3 wetted perimeter (ft)
0.6 hydraulic radius (ft)
8.2 width-depth ratio
Survey Date:4/2020
Field Crew:Kee Mapping & Surveying
View Downstream
Monitoring Year 6 - 2020
Cross-Section Plots
Hogan Creek Stream Mitigation Project
NCDMS Project No. 94708
986
987
988
989
990
991
20 25 30 35 40 45Elevation (ft)Width (ft)
13+74 Pool
MY0 (6/2015)MY1 (12/2015)MY2 (6/2016)MY3 (6/2017)MY4 (7/2018)MY5 (7/2019)MY6 (4/2020)Bankfull (4/2020)
Cross-Section 9-UT2
Bankfull Dimensions
4.6 x-section area (ft.sq.)
6.5 width (ft)
0.7 mean depth (ft)
1.0 max depth (ft)
7.1 wetted perimeter (ft)
0.7 hydraulic radius (ft)
9.2 width-depth ratio
26.0 W flood prone area (ft)
4.0 entrenchment ratio
1.0 low bank height ratio
Survey Date:4/2020
Field Crew:Kee Mapping & Surveying
View Downstream
Monitoring Year 6 - 2020
Cross-Section Plots
Hogan Creek Stream Mitigation Project
NCDMS Project No. 94708
985
986
987
988
989
5 10 15 20 25 30Elevation (ft)Width (ft)
14+73 Riffle
MY0 (6/2015)MY1 (12/2015)MY2 (6/2016)MY3 (6/2017)
MY4 (7/2018)MY5 (7/2019)MY6 (4/2020)Bankfull (4/2020)
Floodprone Area (4/2020)MY0 BKF XS Area Elevation
DMS Project No. 92343
Longitudinal Profile Plots
Hogan Creek Stream Mitigation Project
Monitoring Year 6 - 2020
Hogan Creek Reach 1 (STA 14+29 - STA 29+61)
986
988
990
992
994
996
1400 1450 1500 1550 1600 1650 1700 1750 1800 1850 1900 1950 2000 2050 2100 2150 2200Elevation (feet)Station (feet)
TW MY0 6/2015 TW MY1 12/2015 TW MY2 10/2016 TW MY3 6/2017 TW MY4 7/2018 TW MY5 7/2019 TW MY6 4/2020 WSF MY6 4/2020 BKF MY6 4/2020 Structure MY6 4/2020
XS 1 XS 2
XS 3
Reach Break
981
983
985
987
989
991
2200 2250 2300 2350 2400 2450 2500 2550 2600 2650 2700 2750 2800 2850 2900 2950 3000Elevation (feet)Station (feet)
TW MY0 6/2015 TW MY1 12/2015 TW MY2 10/2016 TW MY3 6/2017 TW MY4 7/2018 TW MY5 7/2019 TW MY6 4/2020 WSF MY6 4/2020 BKF MY6 4/2020 Structure MY6 4/2020
DMS Project No. 92343
Longitudinal Profile Plots
Hogan Creek Stream Mitigation Project
Monitoring Year 6 - 2020
Hogan Creek Reach 2 (STA 30+11 - STA 40+96)
XS4 XS5
XS6
975
977
979
981
983
985
987
3000 3050 3100 3150 3200 3250 3300 3350 3400 3450 3500 3550 3600 3650 3700 3750 3800 3850 3900 3950 4000 4050 4100Elevation (feet)Station (feet)
TW MY0 6/2015 TW MY1 12/2015 TW MY2 10/2016 TW MY3 6/2017 TW MY4 7/2018 TW MY5 7/2019 TW MY6 4/2020 WSF MY6 4/2020 BKF MY6 4/2020
DMS Project No. 92343
Longitudinal Profile Plots
Hogan Creek Stream Mitigation Project
Monitoring Year 6 - 2020
UT2 (STA 8+70 - STA 15+45)
989
991
993
995
997
999
850 900 950 1000 1050 1100 1150 1200Elevation (feet)Station (feet)
TW MY0 6/2015 TW MY1 12/2015 TW MY2 10/2016 TW MY3 6/2017 TW MY4 7/2018 TW MY5 7/2019 TW MY6 4/2020 WSF MY6 4/2020 BKF MY6 4/2020
XS7 XS8
XS9
982
984
986
988
990
992
1200 1250 1300 1350 1400 1450 1500 1550Elevation (feet)Station (feet)
TW MY0 6/2015 TW MY1 12/2015 TW MY2 10/2016 TW MY3 6/2017 TW MY4 7/2018 TW MY5 7/2019 TW MY6 4/2020 WSF MY6 4/2020 BKF MY6 4/2020
Cross-Section Pebble Count Plots
min max
Class
Percentage
Percent
Cumulative
SILT/CLAY Silt/Clay 0.000 0.062 0
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
Summary
Monitoring Year 6 - 2020
Hogan Reach 1, Cross-Section 1
Particle Class
Diameter (mm)Riffle 100-
Count
Very fine 0.062 0.125 0
Fine 0.125 0.250 2 2 2
Medium 0.25 0.50 3 3 5
Coarse 0.5 1.0 1 1 6
Very Coarse 1.0 2.0 6SAND
Very Fine 2.0 2.8 6
Very Fine 2.8 4.0 1 1 7
Fine 4.0 5.6 2 2 9
Fine 5.6 8.0 2 2 11
Medium 8.0 11.0 4 4 15
Medium 11.0 16.0 10 10 25
Coarse 16.0 22.6 18 18 43
Coarse 22.6 32 18 18 61
Very Coarse 32 45 16 16 77
Very Coarse 45 64 13 13 90GRAVEL
Small 64 90 9 9 99
Small 90 128 1 1 100
Large 128 180 100
Large 180 256 100COBBLE
Small 256 362 100
Small 362 512 100
Medium 512 1024 100
Large/Very Large 1024 2048 100
BEDROCK Bedrock 2048 >2048 100
100 100 100
D16 =
D35 =
D50 =
D84 =
D95 =
D100 = 128.0
Channel materials (mm)
11.4
19.4
25.9
54.4
77.3BOULDERTotal
Cross-Section 1
0
10
20
30
40
50
60
70
80
90
100
Individual Class PercentParticle Class Size (mm)
Individual Class Percent
MY0-06/2015 MY1-12/2015 MY2-06/2016 MY3-06/2017 MY4-08/2018 MY5-06/2019 MY6-06/2020
0
10
20
30
40
50
60
70
80
90
100
0.01 0.1 1 10 100 1000 10000Percent Cumulative (%)Particle Class Size (mm)
Pebble Count Particle Distribution
MY0-06/2015 MY1-12/2015 MY2-06/2016 MY3-06/2017 MY4-08/2018 MY5-06/2019 MY6-06/2020
Silt/Clay Sand Gravel Cobble Boulder Bedrock
Hogan Reach 1, Cross-Section 1
Hogan Reach 1, Cross-Section 1
Cross-Section Pebble Count Plots
min max
Class
Percentage
Percent
Cumulative
SILT/CLAY Silt/Clay 0.000 0.062 0
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
Summary
Monitoring Year 6 - 2020
Hogan Reach 1, Cross-Section 3
Particle Class
Diameter (mm)Riffle 100-
Count
Very fine 0.062 0.125 0
Fine 0.125 0.250 0
Medium 0.25 0.50 1 1 1
Coarse 0.5 1.0 1
Very Coarse 1.0 2.0 2 2 3SAND
Very Fine 2.0 2.8 3
Very Fine 2.8 4.0 2 2 5
Fine 4.0 5.6 2 2 7
Fine 5.6 8.0 7 7 14
Medium 8.0 11.0 5 5 19
Medium 11.0 16.0 16 16 35
Coarse 16.0 22.6 11 11 46
Coarse 22.6 32 15 15 61
Very Coarse 32 45 16 16 77
Very Coarse 45 64 14 14 91GRAVEL
Small 64 90 4 4 95
Small 90 128 3 3 98
Large 128 180 2 2 100
Large 180 256 100COBBLE
Small 256 362 100
Small 362 512 100
Medium 512 1024 100
Large/Very Large 1024 2048 100
BEDROCK Bedrock 2048 >2048 100
100 100 100
D16 =
D35 =
D50 =
D84 =
D95 =
D100 = 180.0
Channel materials (mm)
9.1
16.0
24.8
53.7
90.0BOULDERTotal
Cross-Section 3
0
10
20
30
40
50
60
70
80
90
100
Individual Class PercentParticle Class Size (mm)
Individual Class Percent
MY0-06/2015 MY1-12/2015 MY2-06/2016 MY3-06/2017 MY4-08/2018 MY5-06/2019 MY6-06/2020
0
10
20
30
40
50
60
70
80
90
100
0.01 0.1 1 10 100 1000 10000Percent Cumulative (%)Particle Class Size (mm)
Pebble Count Particle Distribution
MY0-06/2015 MY1-12/2015 MY2-06/2016 MY3-06/2017 MY4-08/2018 MY5-06/2019 MY6-06/2020
Silt/Clay Sand Gravel Cobble Boulder Bedrock
Hogan Reach 1, Cross-Section 3
Hogan Reach 1, Cross-Section 3
Cross-Section Pebble Count Plots
min max
Class
Percentage
Percent
Cumulative
SILT/CLAY Silt/Clay 0.000 0.062 0
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
Summary
Monitoring Year 6 - 2020
Hogan Reach 2, Cross-Section 5
Particle Class
Diameter (mm)Riffle 100-
Count
Very fine 0.062 0.125 0
Fine 0.125 0.250 1 1 1
Medium 0.25 0.50 2 2 3
Coarse 0.5 1.0 3
Very Coarse 1.0 2.0 3 3 6SAND
Very Fine 2.0 2.8 6
Very Fine 2.8 4.0 1 1 7
Fine 4.0 5.6 7
Fine 5.6 8.0 4 4 11
Medium 8.0 11.0 1 1 12
Medium 11.0 16.0 15 15 27
Coarse 16.0 22.6 9 9 36
Coarse 22.6 32 11 11 47
Very Coarse 32 45 14 14 61
Very Coarse 45 64 8 8 69GRAVEL
Small 64 90 9 9 78
Small 90 128 5 5 83
Large 128 180 8 8 91
Large 180 256 7 7 98COBBLE
Small 256 362 2 2 100
Small 362 512 100
Medium 512 1024 100
Large/Very Large 1024 2048 100
BEDROCK Bedrock 2048 >2048 100
100 100 100
D16 =
D35 =
D50 =
D84 =
D95 =
D100 = 362.0
Channel materials (mm)
12.2
21.7
34.4
133.6
220.1BOULDERTotal
Cross-Section 5
0
10
20
30
40
50
60
70
80
90
100
Individual Class PercentParticle Class Size (mm)
Individual Class Percent
MY0-06/2015 MY1-12/2015 MY2-06/2016 MY3-06/2017 MY4-08/2018 MY5-06/2019 MY6-06/2020
0
10
20
30
40
50
60
70
80
90
100
0.01 0.1 1 10 100 1000 10000Percent Cumulative (%)Particle Class Size (mm)
Pebble Count Particle Distribution
MY0-06/2015 MY1-12/2015 MY2-06/2016 MY3-06/2017 MY4-08/2018 MY5-06/2019 MY6-06/2020
Silt/Clay Sand Gravel Cobble Boulder Bedrock
Hogan Reach 2, Cross-Section 5
Hogan Reach 2, Cross-Section 5
Cross-Section Pebble Count Plots
min max
Class
Percentage
Percent
Cumulative
SILT/CLAY Silt/Clay 0.000 0.062 0
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
Summary
Monitoring Year 6 - 2020
Hogan Reach 2, Cross-Section 6
Particle Class
Diameter (mm)Riffle 100-
Count
Very fine 0.062 0.125 0
Fine 0.125 0.250 0
Medium 0.25 0.50 1 1 1
Coarse 0.5 1.0 1
Very Coarse 1.0 2.0 1 1 2SAND
Very Fine 2.0 2.8 2
Very Fine 2.8 4.0 1 1 3
Fine 4.0 5.6 3
Fine 5.6 8.0 2 2 5
Medium 8.0 11.0 4 4 9
Medium 11.0 16.0 6 6 15
Coarse 16.0 22.6 4 4 19
Coarse 22.6 32 11 11 30
Very Coarse 32 45 13 13 43
Very Coarse 45 64 21 21 64GRAVEL
Small 64 90 20 20 84
Small 90 128 5 5 89
Large 128 180 4 4 93
Large 180 256 5 5 98COBBLE
Small 256 362 1 1 99
Small 362 512 99
Medium 512 1024 99
Large/Very Large 1024 2048 99
BEDROCK Bedrock 2048 >2048 1 1 100
100 100 100
D16 =
D35 =
D50 =
D84 =
D95 =
D100 = >2048
Channel materials (mm)
17.4
36.5
50.6
90.0
207.2BOULDERTotal
Cross-Section 6
0
10
20
30
40
50
60
70
80
90
100
Individual Class PercentParticle Class Size (mm)
Individual Class Percent
MY0-06/2015 MY1-12/2015 MY2-06/2016 MY3-06/2017 MY4-08/2018 MY5-06/2019 MY6-06/2020
0
10
20
30
40
50
60
70
80
90
100
0.01 0.1 1 10 100 1000 10000Percent Cumulative (%)Particle Class Size (mm)
Pebble Count Particle Distribution
MY0-06/2015 MY1-12/2015 MY2-06/2016 MY3-06/2017 MY4-08/2018 MY5-06/2019 MY6-06/2020
Silt/Clay Sand Gravel Cobble Boulder Bedrock
Hogan Reach 2, Cross-Section 6
Hogan Reach 2, Cross-Section 6
APPENDIX E. Hydrology Summary Data and Plots

Table 14. Verification of Bankfull Events
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
Monitoring Year 6 - 2020
MY1*10/26/2015 10/2/2015-10/3/2015 Crest Gage
MY2 4/12/2016 4/1/2016-4/12/2016 Wrack Lines/Sediment Deposition
MY3 7/5/2017 ~5/22/2017-5/23/2017 Wrack Lines
MY4 4/19/2018 ~4/16/2018 Crest Gage/Wrack Lines
MY5 3/14/2019 ~2/23/2019-2/24/2019 Wrack Lines
2/26/2020 ~2/6/2020 - 2/7/2020 Wrack Lines
9/8/2020 ~8/21/2020 Wrack Lines
MY1 10/26/2015 10/2/2015-10/3/2015 Crest Gage
8/2/2016 ~ 6/16/2016 Crest Gage
4/12/2016 4/1/2016-4/12/2016 Wrack Lines/Sediment Deposition
MY3 7/5/2017 ~5/22/2017-5/23/2017 Crest Gage/Wrack Lines
MY4 4/19/2018 ~4/16/2018 Crest Gage/Wrack Lines
MY5 3/14/2019 ~2/23/2019-2/24/2019 Crest Gage/Wrack Lines
2/26/2020 ~2/6/2020 - 2/7/2020 Crest Gage/Wrack Lines
9/8/2020 ~8/21/2020 Wrack Lines
*Crest Gage was damaged from bankfull event
MethodMonitoring Year
Hogan Creek Reach 2
UT2
Reach Date of Data Collection Date of Occurrence
MY6
MY6
MY2
Monthly Rainfall Data
Hogan Creek Stream Mitigation Project
DMS Project No. 94708
1 2020 rainfall collected from NC CRONOS Station Name: Dobson 2.3 SE, NC (NCSU, 2020)
2 30th and 70th percentile rainfall data collected from weather station ELKIN, NC (USDA, 2020)
Monitoring Year 6 - 2020
0.00
2.00
4.00
6.00
8.00
10.00
12.00
Jan-20 Feb-20 Mar-20 Apr-20 May-20 Jun-20 Jul-20 Aug-20 Sep-20 Oct-20Precipitation (in)Date
Hogan Creek 30-70 Percentile Graph for Rainfall in 2020 Surry County, NC
Dobson 2.3 SE, NC
70th percentile
30th percentile
APPENDIX F. Invasive Species Treatment Logs

MEMO

To: Matthew Reid and Kelly Phillips, NCDEQ
From: Ben Balke and Joe Secoges
Date: June 2020
Subject: Hogan Creek Mitigation Site Maintenance Report

Tasks Performed:
- On May 26, 2020 Eastern Forest Consultants spent the day spraying invasive species along
Hogan Creek Reaches 1 and 2 as well as two tributaries. We did not treat along the tributary
that flows along the landowner’s driveway. Invasive species found in the management area
include Japanese honeysuckle, kudzu, Chinese privet, and multi-flora rose. Japanese
Honeysuckle was the most prolific invasive species on the property and was found to have
the highest densities along the main branches of Hogan Creek. Japanese Honeysuckle was
also found in lighter quantities along the tributaries to Hogan’s Creek. Large multi-flora rose
bushes were found in expected locations as noted in the recent site assessment report, and
smaller plants were found in patches mainly along Hogan Creek Reach 1. The herbicides
used to treat the invasive on this site was a mix of 4 oz Rodeo and 2 oz Vastlan per gallon of
water plus surfactant.

Additional Comments:
- 5/26/2020- Our estimation is that approximately 90 percent of the invasive species
component on this site consists of Japanese Honeysuckle. Therefore, in order to reduce
collateral damage to desirable species intermixed with the honeysuckle, we plan to adjust
our strategy and dedicate more time to spraying when the desirable species are dormant.
However, we do plan to treat kudzu and monitor/treat rose later in the summer.