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HomeMy WebLinkAbout20180067 Ver 1_Puncheon Fork MY3 Monitoring Report DRAFT_20230907 3600 Glenwood Avenue, Suite 100 Raleigh, NC 27612 Corporate Headquarters 6575 West Loop South, Suite 300 Bellaire, TX 77401 Main: 713.520.5400 res.us September 1, 2023 Steve Kichefski U.S. Army Corps of Engineers Regulatory Division 151 Patton Ave. Room 208 Asheville, NC 28801-5006 Subject: French Broad 05 UMBI Puncheon Fork (SAW- 2018-00094) MY3 Report Submittal Mr. Kichefski: On behalf of Resource Environmental Solutions (RES), I am pleased to submit the French Broad 05 UMBI Puncheon Fork MY3 Report. Monitoring for this project was completed in August 2023. In Year 3, three out of four of the fixed vegetation plots and both random vegetation plots met the 320 stems per acre success criteria. Planted stem densities ranged from 283 to 567 with a mean of 445 stems per acre. The average stem height was 2.31 feet. Cross section plots are showing stable conditions since adjustments after As-Built. One of the three stage recorders recorded bankfull events in Year 3. Below are IRT comments included in the Monitoring Year 2 credit release letter on December 28, 2022 and RES’ responses: USACE 1. You indicated that there are plans to install Flexi Baffles during low flow conditions during the 2023 growing season. Please be sure to provide photographs of the installation in the MY3 report. RES installed the Flexi Baffles in July 2023. The culvert was inspected during Vegetation Monitoring in August and the Flexi Baffles were found to be functioning as designed with sediment accumulating in the culvert. Photos can be found in Appendix B. 2. We appreciate the documentation of the repairs conducted at JB5-C. Please continue to watch these areas closely and provide an update in the MY3 monitoring report. The repairs made on JBC-5 remain stable. Photos of the areas can be found in Appendix B. Upon approval of this monitoring report, RES is requesting a 10% stream credit release (283.555). Additionally, RES is requesting a 15% wetland credit release (0.147 WMUs) for the completion of the MY3 report. Please see enclosed the credit release timeline and updated credit ledgers. Thank you for all of your time and consideration and we look forward to continuing to work with you all as this Project progresses. Please contact me at (336) 705-3041 or kobenauf@res.us if you have any questions or require any additional information. Thank you, Katie Obenauf, Ecologist kobenauf@res.us | 336.705.3041 Project Name: Sponsor Name: USACE Action ID: NCDWQ Action ID: Non-Forested Wetland Credits Warm Water Cold Water Cool Water Riparian Riverine Riparian Non-Riverine Non-Riparian Coastal 2,835.55 0.977 2,835.55 0.977 Scheduled Releases Warm Water Cold Water WQ SMUs Scheduled Releases Riparian Riverine Riparian Non-Riverine Non-Riparian Scheduled Releases Coastal 1 (Bank/Site Establishment)1, 2 15%425.333 15% 0.157 15% 9/30/2020 10/30/2020 2 (Year 0/As-Built)3 15%425.300 15% 0.137 15% 5/31/2021 11/1/2021 3 (Year 1 Monitoring)10%283.600 10% 0.098 10% 4/15/2022 7/29/2022 4 (Year 2 Monitoring)10%283.555 10% 0.098 15% 12/30/2022 12/28/2022 5 (Year 3 Monitoring)10%283.555 15% 0.147 20% 12/29/2023 6 (Year 4 Monitoring)5%141.778 5% 0.049 10% 7 (Year 5 Monitoring)10%283.555 15% 0.147 15% 8 (Year 6 Monitoring)5%141.778 5% 0.049 NA NA 9 (Year 7 Monitoring)10%283.541 10% 0.095 NA NA Stream Bankfull Standard4 10%283.555 NA NA NA NA NA NA Varies4 Total Credits Release to Date 1134.233 0.392 Date French Broad 06010105 2020 8/29/2023 County: 8-Digit HUC: Year Project Instituted: Date Prepared: Actual Release Date Potential Credits from As-Built Survey Stream Credits Credit Classification Non-Forested Wetland CreditsForested Wetland CreditsStream Credits Current and Future Credit Releases Credit Release Milestone Wilmington District Mitigation Bank Credit Release Schedule 4 - A 10% reserve of credits to be held back until the bankfull event performance standard has been met. 1 - The first credit release milestone is based on the potential credits stated in the approved mitigation plan. 2 - The first credit release shall occur upon establishment of the mitigation bank, which includes the following criteria: 1) Execution of the MBI or UMBI by the Sponsor and the USACE; 2) Approval of the final Mitigation Plan; 3) Mitigation bank site must be secured; 4) Delivery of the financial assurances described in the Mitigation Plan; 5) Recordation of the long-term protection mechanism and title opinion acceptable to the USACE; 6) 404 permit verification for construction of the site, if required. 3 - The second credit release is based on the credit totals from the as-built survey, and may differ slightly from the credit totals stated in the mitigation plan. Contingencies (if any): Signature of Wilmington District Official Approving Credit Release Puncheon Fork Stream Mitigation Project EBX SAW-2018-00094 DWR # 18-0067 Potential Credits from Mitigation Plan Forested Wetland Credits Total Potential Credits Projected Release Date Transaction Credits Released Credits Debited Current Credits Number To Bank From Bank Credit Balance Reserved Purchaser Project Permit Number Date HUC 1 0.157 10/30/20 2 0.137 11/1/21 3 0.098 7/29/22 4 0.203 The Orion Group of WNC, LLC Orion Retreat and Daycare 2021-02324 10/14/22 06010105 5 0.098 12/28/22 6 0.132 Manna Food Bank, Inc. Manna Food Bank DWR Project #20221732 3/22/23 06010105 7 0.155 Dodge's Store Dodge Stores 2022-01261 4/21/23 06010105 Total 0.490 0.490 0.000 0.000 RES FRENCH BROAD 05 UMBRELLA MITIGATION BANKING INSTRUMENT PUNCHEON FORK WETLAND CREDIT LEDGER (HUC 06010105) Tuesday, August 8, 2023 Credits Released: Task 1 Credits Released: Task 4 Credits Released: Task 2 Credits Released: Task 3 Transaction Credits Released Credits Debited Current Credits Number To Bank From Bank Credit Balance Reserved Purchaser Project Permit Number Date HUC 1 425.30 10/30/20 2 425.30 11/1/21 3 283.60 7/29/22 4 283.60 12/28/22 5 66.00 NC Department of Transportation B-5989, Bridge 71 SAW-2022-02122 8/8/23 06010105 Total 1,417.80 66.00 1,351.80 0.0 RES FRENCH BROAD 05 UMBRELLA MITIGATION BANKING INSTRUMENT PUNCHEON FORK STREAM CREDIT LEDGER (HUC 06010105) Tuesday, August 8, 2023 Credits Released: Task 1 Credits Released: Task 3 Credits Released: Task 2 Credits Released: Task 4 YEAR 3 MONITORING REPORT PUNCHEON FORK MITIGATION SITE MADISON COUNTY, NORTH CAROLINA USACE Action ID: SAW-2018-00094 | DWR Project # 18-0067 RES FRENCH BROAD 05 UMBRELLA MITIGATION BANK Provided by: Bank Sponsor: Environmental Banc & Exchange, LLC 3600 Glenwood Avenue, Suite 100 Raleigh, NC 27612 919-209-1055 September 2023 Table of Contents 1.0 Project Summary ...................................................................................................................................................... 1 1.1 Project Location and Description ....................................................................................................... 1 1.2 Project Goals and Objectives ............................................................................................................... 1 1.3 Project Success Criteria .......................................................................................................................... 2 Stream Restoration Success Criteria ......................................................................................................... 2 Vegetation Success Criteria .......................................................................................................................... 3 1.4 Project Components ................................................................................................................................ 3 1.5 Stream and Wetland Design/Approach ........................................................................................... 4 1.6 Construction and As-Built Conditions .............................................................................................. 8 1.7 MY2 Monitoring Performance (MY2) ................................................................................................ 8 Vegetation .......................................................................................................................................................... 8 Stream Geomorphology ................................................................................................................................ 9 Stream Hydrology ............................................................................................................................................ 9 2.0 Methods .................................................................................................................................................................... 10 3.0 References ................................................................................................................................................................ 11 Appendix A: Background Tables Table 1. Project Mitigation Components Table 2. Project Activity and Reporting History Table 3. Project Contacts Table Table 4. Project Background Information Table Figure 1. Site Location Map Appendix B: Visual Assessment Data Figure 2. Current Conditions Plan View Vegetation Plot Photos Monitoring Device Photos Crossing Photos Stream Repair Photos Vegetation Problem Areas Appendix C: Vegetation Plot Data Table 5. Planted Species Summary Table 6. Vegetation Plot Mitigation Success Summary Table 7. Stem Count Total and Planted by Plot Species Appendix D: Stream Measurement and Geomorphology Data Table 8. Baseline Stream Data Summary Table 9. Cross Section Morphology Data Table Cross Section Overlay Plots Appendix E: Hydrology Data Table 10. Rainfall Summary Table 11. Documentation of Geomorphically Significant Flow Events Stage Recorder Hydrographs Puncheon Fork 1 Year 3 Monitoring Report Mitigation Site September 2023 1.0 Project Summary 1.1 Project Location and Description The Puncheon Fork Mitigation Project (Project) (SAW-2018-00094), a project within the RES French Broad 05 Umbrella Mitigation Bank, is located within a rural watershed in Madison County, North Carolina approximately five miles northwest of Swiss, NC. The Project lies within the French Broad River Basin, and United States Geological Survey (USGS) 12-digit hydrologic unit code (HUC) 060101051001. The Project is being designed to help meet compensatory mitigation requirements for stream and wetland impacts in the HUC 06010105. The Project is in the Southern Crystalline Ridges and Mountains of the Blue Ridge ecoregion. The Project area is comprised of a 13.15-acre easement involving Puncheon Fork and three of its unnamed tributaries as well as a segment of Hampton Creek, which all drain into Upper Big Laurel Creek and, eventually, the French Broad River. The Project is accessible from Puncheon Fork Road. The GPS coordinates of the site are 35.960276°N, -82.533400°W. The streams and wetlands proposed for restoration and enhancement have been significantly impacted by long-term agricultural practices, specifically livestock husbandry, which has contributed to degraded stream channels and the lack of riparian wetland and buffer vegetation throughout the Project. Proposed improvements to the Project will help meet the river basin needs expressed in the 2009 DMS French Broad River Basin Restoration Priorities (RBRP) Report as well as ecological improvements to the riparian corridor within the easement. 1.2 Project Goals and Objectives Through the comprehensive analysis of the Project’s maximum functional uplift using a Function Based Framework, specific, attainable goals and objectives will be realized by the Puncheon Fork Mitigation Project. These goals clearly address the degraded water quality and nutrient input from farming that were identified as major watershed stressors in the 2009 French Broad RBRP. The project goals are: · Reduce sediment inputs into streams; · Reduce nutrient and fecal coliform inputs into streams; · Improve aquatic and terrestrial habitat, including trout habitat; · Improve floodplain connectivity; · Restore and enhance appropriate riparian plant communities; · Enhance ecological structure and function of existing wetlands. The project goals will be addressed through the following project objectives: Puncheon Fork 2 Year 3 Monitoring Report Mitigation Site September 2023 · Design and reconstruct stream channels that will convey bankfull flows while maintaining stable dimension, profile, and planform based on modeling, watershed conditions, and reference reach conditions; · Permanently exclude livestock from stream channels, their associated buffers, and wetlands by installing approximately 11,960 linear feet of livestock exclusion fencing; · Add in-stream structures and bank stabilization measures to protect restored and enhanced streams; · Install habitat features such as brush toes, woody materials, boulder clusters, and pools of varying depths to restored and enhanced streams; · Create step-pool sequences and scour pools that will promote trout habitation in designated Trout Waters; · Grade banks to promote development of gravels bars, serving as potential spawning habitat for trout · Reduce bank height ratios and increase entrenchment ratios in restored streams; · Increase forested riparian buffers to at least 30 feet on both sides of the channel along the Project reaches, including existing wetlands, with a forested plant community; · Treat exotic invasive plant species; Establish a permanent conservation easement on the site that will prevent future land use changes. 1.3 Project Success Criteria The success criteria for the Project will follow the 2016 USACE Wilmington District Stream and Wetland Compensatory Mitigation Update, the Puncheon Fork Final Mitigation Plan and subsequent agency guidance. Specific success criteria components are presented below. Stream Restoration Success Criteria Four bankfull flow events must be documented within the seven-year monitoring period. The bankfull events must occur in separate years. Otherwise, the stream monitoring will continue until four bankfull events have been documented in separate years. Stream reaches will be monitored to document intermittent or seasonal surface flow. This will be accomplished through direct observation and the use of stream gauge transducers with data loggers (stage recorder). Reaches must demonstrate a minimum of 30 consecutive days of flow. Three stage recorders will be installed on Reaches JB2-A, JB4-B and JB6-A. There should be little change in as-built cross sections. If changes do take place, they should be evaluated to determine if they represent a movement toward a less stable condition (for example down-cutting or erosion) or are minor changes that represent an increase in stability (for example settling, vegetative changes, deposition along the banks, or decrease in width/depth ratio). Cross sections shall be classified using the Rosgen stream classification method, and all monitored cross sections should fall within the quantitative parameters defined for channels of the design stream type. Bank height ratio shall not exceed 1.2, and the entrenchment ratio shall be above 2.2 within Puncheon Fork 3 Year 3 Monitoring Report Mitigation Site September 2023 restored riffle cross sections. Channel stability should be demonstrated through a minimum of four bankfull events documented in the seven-year monitoring period. Digital images will be used to subjectively evaluate channel aggradation or degradation, bank erosion, success of riparian vegetation, and effectiveness of erosion control measures. Longitudinal images should not indicate the absence of developing bars within the channel or an excessive increase in channel depth. Lateral images should not indicate excessive erosion or continuing degradation of the banks over time. A series of images over time should indicate successional maturation of riparian vegetation. Cross section, vegetation plot, and stage recorder locations will be used as permanent digital image stations. Vegetation Success Criteria Specific and measurable success criteria for plant density within the riparian buffers on the Project follow IRT Guidance. The interim measures of vegetative success for the Project are the survival of at least 320 planted three-year old trees per acre at the end of Year 3, 260 trees per acre with an average height of six feet at the end of Year 5, and the final vegetative success criteria is 210 trees per acre with an average height of eight feet at the end of Year 7. Volunteer trees are counted, identified to species, and included in the yearly monitoring reports, but are not included in the success criteria of total planted stems until they are present in the plot for greater than two seasons. Moreover, any single species can only account for up to 50 percent of the required number of stems within any vegetation plot. Any stems in excess of 50 percent will be shown in the monitoring table but will not be used to demonstrate success. 1.4 Project Components Through stream restoration and enhancement, the Project presents 5,543 LF of stream, generating 2,835.550 Cold Stream Mitigation Units (SMU). Additionally, the Project presents 1.993 acres of wetlands, generating 0.977 Wetland Mitigation Units (WMU). Stream Mitigation Mitigation Approach Linear Feet Ratio Cold SMU Restoration 423 1:1 423.000 Enhancement I 2,022 1.5:1 1,348.000 Enhancement II 2,057 2.5:1 822.800 Enhancement II 671 4:1 167.750 Enhancement III 370 5:1 74.000 Total 5,543 2,835.550 Wetland Mitigation Mitigation Approach Area Ratio WMU Enhancement 1.742 2:1 0.875 Enhancement 0.251 2.5:1 0.102 Total 1.993 0.977 Puncheon Fork 4 Year 3 Monitoring Report Mitigation Site September 2023 1.5 Stream and Wetland Design/Approach The detailed treatment plan and design approach is as follows: Reach JB1 An Enhancement Level II approach was used for this reach to address areas of bed instability, limited bedform diversity and buffer impacts. Enhancement activities included: · Installation of boulder clusters to promote instream habitat diversity, · Removal and offsite disposal of a 30” culvert crossing near station 03+25 · Installation of a log step-pool structure at the culvert removal site, · Knick-point stabilization with a log sill and brush toe near station 04+50, · Knick-point stabilization with a log sill and brush toe near station 05+90, · Knick-point stabilization with a log sill and brush toe near station 06+45, · Knick-point stabilization with a log sill and brush toe near station 06+52, · Bed Stabilization with riffle grade control near station 07+15, · Livestock exclusion, and · Planting riparian vegetation. Reach JB2-A A priority I restoration approach was used for this reach to address floodplain encroachment and buffer impacts. Restoration activities included: · Grading a new single thread channel in the existing floodplain, · Re-aligning the channel to move it away from Hoot and Holler Lane, · Removal and offsite disposal of a 36 x 60” culvert crossing near station 02+75 · Installing log and rock structures to provide grade control and habitat, · Establishing a mix of riffle-pool and step-pool sequence throughout the reach, · Filling the existing channel, · Livestock exclusion, and · Planting riparian vegetation. Reach JB2-B An Enhancement Level II approach was used for this reach to address areas of bank instability and buffer impacts. Enhancement activities included: · Installation of log vane at station 04+35 · Removal and offsite disposal of a 36 x 60” culvert crossing near station 05+75 · Installation of riffle grade control at proposed culvert removal, · Installation of log sill and brush toe at station 05+75, · Grading both channel banks to a 2.5:1 slope from station 5+30 to 6+20, · Livestock exclusion, · Removal of utilities from the stream corridor, and · Planting riparian vegetation. Puncheon Fork 5 Year 3 Monitoring Report Mitigation Site September 2023 Reach JB3-A An Enhancement Level II approach was used for this reach to address areas of bank instability, limited bedform diversity, and buffer impacts. Enhancement activities included: · Installation of boulder clusters to promote instream habitat diversity, · Re-grading and stabilization of existing ford crossing near station 7+00, · Grading right channel bank to a 2.5:1 slope from station 6+50 to 7+10, · Grading right channel bank to a 2.5:1 slope from station 8+60 to 9+10, · Livestock exclusion, and · Planting riparian vegetation. Reach JB3-B An Enhancement Level I approach was used for this reach to address areas of bank instability, limited bedform diversity and buffer impacts. Enhancement activities included: · Installation of boulder clusters to promote instream habitat diversity, · Headcut stabilization with a rock step pool near station 11+00, · Debris removal near station 12+60, · Installation of brush toe along left bank from station 12+50 to 12+95, · Grading left channel bank to a 2.5:1 slope from station 12+50 to 12+95, · Livestock exclusion, and · Planting riparian vegetation. Reach JB4-A An Enhancement Level II approach was used for this reach to address areas of slope instability and buffer impacts. Enhancement activities included: · Slope stabilization in the left overbank from station 00+50 to 03+50, · Removal and disposal of existing 15” pipe offsite, · Bed and bank stabilization with a log sill and brush toe near station 05+15, · Left bank stabilization near station 6+00, · Livestock exclusion, and · Planting riparian vegetation. Reach JB4-B An inline restoration approach was used for this reach to address channel instability and buffer impacts. Restoration activities included: · Grading a new single thread channel in the existing valley, · Valley stabilization along the left bank, · Right bank stabilization at a groundwater seep near station 7+00, · Installing log and rock structures to provide grade control and habitat, Puncheon Fork 6 Year 3 Monitoring Report Mitigation Site September 2023 · Establishing a mix of riffle-pool and step-pool sequence throughout the reach, · Removal and offsite disposal of a 24” culvert crossing near station 08+75 · Installation of a new 48” culvert and re-grading and stabilizing the roadway near station 08+75, · Livestock exclusion, and · Planting riparian vegetation. Reach JB4-C An Enhancement Level I approach was used for this reach to address areas of channel instability and buffer impacts. Enhancement activities included: · Removal and offsite disposal of a 24” culvert crossing near station 08+75 · Installation of a new 48” culvert and re-grading and stabilizing the roadway near station 08+75, · Installation of a riffle grade control and step pool at the outlet of the proposed 48” culvert, · Installation of a riffle grade control near station 10+25, · Grading both channel banks to a 2.5:1 slope from station 11+20 to 12+25, · Grading left channel bank to a 2.5:1 slope from station 12+75 to 13+90, · Livestock exclusion, and · Planting riparian vegetation. Reach JB5-A An Enhancement Level II approach was used for this reach to address areas of bank instability, lack of bedform diversity, and buffer impacts. Enhancement activities included: · Installation of boulder clusters to promote instream habitat diversity, · Re-grading and stabilization of existing ford crossing near station 14+50, · Livestock exclusion, · Removal of utilities from the stream corridor, and · Planting riparian vegetation. Reach JB5-B An Enhancement Level III approach was used for this reach to address buffer impacts. Enhancement activities included: · Livestock exclusion, · Removal of utilities from the stream corridor, and · Planting riparian vegetation. Reach JB5-C An Enhancement Level I approach was used for this reach to address areas of channel instability, limited bedform diversity, and buffer impacts. Enhancement activities included: · Installation of boulder clusters to promote instream habitat diversity, Puncheon Fork 7 Year 3 Monitoring Report Mitigation Site September 2023 · Grading left channel bank to a 2.5:1 slope from station 24+40 to 25+15, · Install a log sill at grade near station 24+63, · Install brush toe along left channel bank from station 24+63 to 25+18, · Grading left channel bank to a 2.5:1 slope from station 26+50 to 27+30, · Install a log sill at grade near station 26+80, · Install brush toe along left channel bank from station 26+80 to 27+17, · Grading left channel bank to a 3:1 slope from station 30+25 to 30+75, · Install a log sill at grade near station 30+59, · Install brush toe along right channel bank from station 30+59 to 30+68, · Removal of utilities from the stream corridor, · Livestock exclusion, and · Planting riparian vegetation. Reach JB6-A An Enhancement Level I approach was used for this reach to address areas of bank instability, limited bedform diversity and buffer impacts. Enhancement activities included: · Installation of boulder clusters to promote instream habitat diversity, · Install a log sill and brush toe at grade near station 2+25, · Install brush toe along left channel bank from station 2+48 to 3+15, · Grading left channel bank to a 3:1 slope from station 2+65 to 4+20, · Install a log sill and brush toe at grade near station 5+16, · Grading left channel bank to a 3:1 slope from station 5+30 to 5+75, · Grading point bar to a 5:1 slope from station 04+30 to 05+00, · Install stone toe from station 07+30 to 07+60, · Line upstream face of crossing with class II riprap, · Livestock exclusion, and · Riparian planting. Reach JB6-B An Enhancement Level II approach was used for this reach to address bank instability, limited bedform diversity and buffer impacts. Enhancement activities included: · Installation of boulder clusters to promote instream habitat diversity, · Livestock exclusion, and · Riparian planting. Reach JB7 An Enhancement Level II approach was used for this reach to address bank instability and buffer impacts. Enhancement activities included: · Livestock exclusion, and · Riparian planting. Puncheon Fork 8 Year 3 Monitoring Report Mitigation Site September 2023 Wetland Enhancement Approach All jurisdictional wetlands within the Project boundary (WA-WV) were enhanced, primarily through tree planting and cattle exclusion. Approximately 11,960 feet of fencing ensures that cattle will no longer have access to these wetlands, and a diverse mix of native trees appropriate for the community type was planted. However, some small wetland areas (WH, WI, WJ, WL, WM, WN, WO) were credited at a lower ratio (2.5 to 1) due to the fact that they only received supplemental plantings and may not be monitored directly for detailed vegetation data. In addition, some wetlands also benefit from improved hydrology as a byproduct of stream restoration and enhancement activities; however, hydrology is not monitored, nor is their success dependent on it. Finally, all wetlands within the Project are protected from future land use conversion by an established permanent conservation easement. 1.6 Construction and As-Built Conditions Stream construction and planting was completed in April 2021. The Puncheon Fork Site was built to design plans and guidelines with no major changes. The record drawings are included in Appendix E. Minor monitoring device location changes were made during as-built installation; however, the quantities remained as proposed in the Final Mitigation Plan. Planting plan changes are outlined in Appendix C. Of the 15 species proposed, five were planted on April 15, 2021, and two were planted on May 3, 2021. Additionally, a small percentage of green ash (Fraxinus pennsylvanica) was planted. The eight species that were unavailable at the time of initial planting were planted in March 2022. 1.7 MY3 Monitoring Performance (MY3) The Puncheon Fork baseline monitoring activities were performed on July 12, 2023, and August 16, 2023. All MY3 monitoring data is present below and in the appendices. The Project is on track to meeting vegetation, stream, and wetland interim success criteria. Vegetation Monitoring of four fixed vegetation plots and two random vegetation plots was completed on August, 2023. Vegetation data are in Appendix C, associated photos are in Appendix B, and plot locations are in Appendix B. MY3 monitoring data indicates that three out of four fixed plots and both random plots are exceeding the interim success criteria of 320 planted stems per acre. Fixed vegetation plot three did not meet interim success criteria with 283 planted stems per acre. This vegetation plot did have two volunteer tulip-poplars (Liriodendron tulipifera) which if counted towards success brings the plot to a total of 364 stems per acre. Planted stem densities ranged from 283 to 567 planted stems per acre with a mean of 445 planted stems per acre across all plots. A total of 9 species were documented within the plots. Volunteer species were noted in one of the four plots and are expected to become more established in upcoming years. The average stem Puncheon Fork 9 Year 3 Monitoring Report Mitigation Site September 2023 height in the plots was 2.31 feet. Visual assessment of vegetation outside of the monitoring plots indicates that the herbaceous vegetation is becoming well established throughout the project. There is one small area near VP 1 where a head-cut coming from the field has re-directed and is flowing under the wattles installed to help with erosion (GPA-1). The head-cut is leading to low herbaceous cover in the area. RES will fix the wattle and sow an herbaceous seed cover to help prevent further erosion in this area. A few small, isolated pockets of multiflora rose were noted during vegetation monitoring in the Fall of 2022. These areas were treated in February of 2023 and will continue to be monitored. In February 2023 a supplemental planting of 40 3-gallon container trees occurred in a 0.10 acre low stem area around vegetation plot 4. Species planted included 10 Carpinus caroliniana (American hornbeam), 10 Cephalanthus occidentalis (buttonbush), 10 Alnus serrulata (hazel alder), and 10 Cornus amomum (silky dogwood). Stream Geomorphology A total of 12 cross sections were collected for MY3 on July 12, 2023. Summary tables and cross section plots are in Appendix D. The cross section profiles show some changes between As-Built and MY3 conditions, but this is to be expected within the first few years of stream monitoring as the stream adjusts. Conditions between MY2 and MY3 are more similar showing the channel is stabilizing. The reaches were designed as a gravel bed channels and remain classified as a gravel bed channels. Visual assessment of the stream channel was performed to document signs of instability, such as eroding banks, structural instability, or excessive sedimentation. The channel is transporting sediment as designed and will continue to be monitored for aggradation and degradation. The two log sills and a bank on JB5-C that were repaired in May 2022 are in good condition. Updated photos of the areas from this year’s monitoring are in Appendix B. Additionally, in response to the IRT’s concerns about the laminar flow in the culvert on JB4, RES installed Flexi Baffles in the culvert in July 2023. During vegetation monitoring in August field staff noted that the baffles were functioning as designed and allowing sediment to accumulate within the culvert. Photos can be found in Appendix B. Stream Hydrology Three stage recorders were downloaded on July 12 and August 16, 2023, to document bankfull events. The stage recorders are located on JB2-A, JB4-B, and JB6-A. The stage recorder on JB6-A recorded the only two bankfull events in MY3, with the highest event being 0.36 ft above bankfull. Reaches JB2 and JB4 have valley slopes between 6-10%. Overbank events at these slopes are far more likely to cause significant erosion due to increased flow velocities. With this is mind, these reaches are not expected to reach bankfull stage as often as the flatter reaches downstream. This Puncheon Fork 10 Year 3 Monitoring Report Mitigation Site September 2023 is particularly true in the early stages of the project where channel roughness is lower and floodplain vegetation/stability has not fully developed. A large rain event on August 3rd led to the highest readings on all three stage recorders: 0.01 ft under bankfull on JB2-A, 0.15 ft under bankfull on JB4-B, and 0.36 ft over bankfull on JB6-A. Precipitation at the nearby Jessen station recorded 5.27 inches of rainfall for that day. The stage recorder locations can be found on Figure 2 and data is in Appendix E. 2.0 Methods Stream cross section monitoring was conducted using a Topcon GTS-312 Total Station. Three- dimensional coordinates associated with cross-section data were collected in the field (NAD83 State Plane feet FIPS 3200). Morphological data were collected at 12 cross-sections. Survey data were imported into CAD, ArcGIS®, and Microsoft Excel® for data processing and analysis. The stage recorders include an automatic pressure transducer placed in PVC casing in a pool. The elevation of the bed and top of bank at each stage recorder are used to detect bankfull events. Vegetation success is being monitored at four fixed monitoring plots and two random monitoring plots. Vegetation plot monitoring follows the CVS-EEP Level 2 Protocol for Recording Vegetation, version 4.2 (Lee et al. 2008) and includes analysis of species composition and density of planted species. Data are processed using the CVS data entry tool. In the field, the four corners of each plot were permanently marked with PVC at the origin and metal conduit at the other corners. Photos of each plot are to be taken from the origin each monitoring year. The random plots are to be collected in locations where there are no permanent vegetation plots. The random plots are most likely to be collected in the form of 100 square meter belt transects with variable dimensions. Tree species and height will be recorded for each planted stem and the transects will be mapped and new locations will be monitored in subsequent years. Puncheon Fork 11 Year 3 Monitoring Report Mitigation Site September 2023 3.0 References Griffith, G.E., J.M.Omernik, J.A. Comstock, M.P. Schafale, W.H.McNab, D.R.Lenat, T.F.MacPherson, J.B. Glover, and V.B. Shelburne. (2002). Ecoregions of North Carolina and South Carolina, (color Poster with map, descriptive text, summary tables, and photographs): Reston, Virginia, U.S. Geological Survey (map scale 1:1,500,000). Lee Michael T., Peet Robert K., Roberts Steven D., and Wentworth Thomas R., 2008. CVS-EEP Protocol for Recording Vegetation Level. Version 4.2 Resource Environmental Solutions (2020). Puncheon Fork Final Mitigation Plan. Schafale, M.P. 2012. Guide to the Natural Communities of North Carolina, Fourth Approximation. North Carolina Natural Heritage Program, Division of Parks and Recreation, NCDENR, Raleigh, NC. USACE. (2016). Wilmington District Stream and Wetland Compensatory Mitigation Update. NC: Interagency Review Team (IRT). Appendix A Background Tables Table 1. Puncheon Fork - Mitigation Assets and Components Existing Mitigation Footage Plan Mitigation As-Built or Footage or Mitigation Restoration Priority Mitigation Plan Footage or Project Segment Acreage Acreage Category Level Level Ratio (X:1) Credits Acreage Comments JB1 528 528 Cold EII 2.50000 211.200 528 Structures, riparian planting & cattle exclusion JB2-A 230 201 Cold R I 1.00000 201.000 201 Channel restoration, riparian planting & cattle exclusion JB2-B 329 329 Cold EII 2.50000 131.600 329 Structures, riparian planting & cattle exclusion JB3-A 389 389 Cold EII 2.50000 155.600 389 Structures, riparian planting & cattle exclusion JB3-B 288 288 Cold EI 1.50000 192.000 288 Structures, bank stabilization, riparian planting & cattle exclusion JB4-A 564 564 Cold EII 2.50000 225.600 564 Bank stabilization, riparian planting & cattle exclusion JB4-B 225 222 Cold R II 1.00000 222.000 222 Channel restoration, riparian planting & cattle exclusion JB4-C 540 540 Cold EI 1.50000 360.000 540 Structures, bank stabilization, riparian planting & cattle exclusion JB5-A 505 505 Cold EII 4.00000 126.250 505 Structures, riparian planting & cattle exclusion JB5-B 370 370 Cold EIII 5.00000 74.000 370 Riparian planting & cattle exclusion JB5-C 640 640 Cold EI 1.50000 426.667 640 Structures, bank stabilization, riparian planting & cattle exclusion JB6-A 554 554 Cold EI 1.50000 369.333 554 Structures, bank stabilization, riparian planting & cattle exclusion JB6-B 247 247 Cold EII 2.50000 98.800 247 Structures, riparian planting & cattle exclusion JB7 166 166 Cold EII 4.00000 41.500 166 Riparian planting & cattle exclusion WA 0.248 0.248 Riparian E 2.00000 0.124 0.248 Floodplain wetland: Riparian planting & cattle exclusion WB 0.257 0.257 Riparian E 2.00000 0.129 0.257 Floodplain wetland: Riparian planting & cattle exclusion WC 0.524 0.524 Riparian E 2.00000 0.262 0.524 Floodplain wetland: Riparian planting & cattle exclusion WD 0.007 0.007 Riparian E 2.00000 0.004 0.007 Floodplain wetland: Riparian planting & cattle exclusion WE 0.033 0.033 Riparian E 2.00000 0.017 0.033 Floodplain wetland: Riparian planting & cattle exclusion WF 0.008 0.008 Riparian E 2.00000 0.004 0.008 Seep/Spring wetland: Riparian planting & cattle exclusion WG 0.211 0.211 Riparian E 2.00000 0.106 0.211 Floodplain wetland: Riparian planting & cattle exclusion WH 0.019 0.019 Riparian E 2.50000 0.008 0.019 Seep/Spring wetland: Riparian planting & cattle exclusion WI 0.084 0.084 Riparian E 2.50000 0.034 0.084 Seep/Spring wetland: Riparian planting & cattle exclusion WJ 0.014 0.014 Riparian E 2.50000 0.006 0.014 Seep/Spring wetland: Riparian planting & cattle exclusion WK 0.22 0.22 Riparian E 2.00000 0.110 0.22 Seep/Spring wetland: Riparian planting & cattle exclusion WL 0.012 0.012 Riparian E 2.50000 0.005 0.012 Seep/Spring wetland: Riparian planting & cattle exclusion WM 0.031 0.031 Riparian E 2.50000 0.012 0.031 Seep/Spring wetland: Riparian planting & cattle exclusion WN 0.012 0.012 Riparian E 2.50000 0.005 0.012 Seep/Spring wetland: Riparian planting & cattle exclusion WO 0.079 0.079 Riparian E 2.50000 0.032 0.079 Seep/Spring wetland: Riparian planting & cattle exclusion WP 0.011 0.011 Riparian E 2.00000 0.006 0.011 Seep/Spring wetland: Riparian planting & cattle exclusion WQ 0.026 0.026 Riparian E 2.00000 0.013 0.026 Seep/Spring wetland: Riparian planting & cattle exclusion WR 0.077 0.077 Riparian E 2.00000 0.039 0.077 Seep/Spring wetland: Riparian planting & cattle exclusion WS 0.039 0.039 Riparian E 2.00000 0.020 0.039 Seep/Spring wetland: Riparian planting & cattle exclusion WT 0.011 0.011 Riparian E 2.00000 0.006 0.011 Seep/Spring wetland: Riparian planting & cattle exclusion WU 0.066 0.066 Riparian E 2.00000 0.033 0.066 Seep/Spring wetland: Riparian planting & cattle exclusion WV 0.004 0.004 Riparian E 2.00000 0.002 0.004 Seep/Spring wetland: Riparian planting & cattle exclusion Project Credits Non-Rip Coastal Warm Cool Cold Riverine Non-Riv Wetland Marsh Restoration 275.000 Re-establishment Rehabilitation Enhancement 0.977 Enhancement I 1348.000 Enhancement II 1212.550 Creation Preservation Total 2835.550 0.977 Restoration Level Stream Riparian Wetland Elapsed Time Since grading complete: 2 year 6 months Elapsed Time Since planting complete: 2 year 6 months Number of reporting Years1:3 Data Collection Completion or Activity or Deliverable Complete Delivery Mitigation Plan NA Aug-20 Final Design – Construction Plans NA Sep-20 Stream Construction NA Apr-21 Site Planting (Five Species)NA Apr-21 Site Planting (Two Additional Species)NA May-21 As-built (Year 0 Monitoring – baseline)Apr-21 Jul-21 Year 1 Monitoring Dec-21 Jan-22 Year 2 Monitoring Oct-22 Nov-22 Supplemental Planting (Eight Additional Species) NA Mar-22 Stream Repair (Two Log Sills and Left Bank on JB5-C) NA May-22 Invasive Treatment NA Aug-22 Easement Marker Installation NA Aug-22 Year 3 Monitoring XS: Jul-23 Veg: Aug-23 Sep-23 Rosa multiflora treatment NA Feb-23 Supplemental Planting (0.1 acres)NA Feb-23 Flexi Baffle Installation NA Jul-23 Year 4 Monitoring Year 5 Monitoring Year 6 Monitoring Year 7 Monitoring 1 = The number of reports or data points produced excluding the baseline Table 2. Project Activity and Reporting History Puncheon Fork Mitigation Site Designer RES / 3600 Glenwood Avenue, Suite 100, Raleigh, North Carolina 27612. Primary project design POC Ben Carroll Construction Contractor KBS Earthwork Inc. / 5616 Coble Church Rd., Julian, NC 27283 Construction contractor POC Kory Strader Survey Contractor Kee Mapping & Surveying / 88 Central Ave., Asheville, NC 28801 Survey contractor POC Nick Haase Planting Contractor H&J Forestry Planting contractor POC Matt Hitch Monitoring Performers RES / 3600 Glenwood Avenue, Suite 100, Raleigh, North Carolina 27612. Monitoring POC Katie Obenauf 336.705.3041 Table 3. Project Contacts Table Puncheon Fork Mitigation Site USGS Hydrologic Unit 8-digit 6010105 JB1 JB2 JB3 JB4 JB5 JB6 226 302 559 677 1515 789 122 112 257 35 334 1240 P P P P P P Low Low Low Low Low-Medium Low B4a B4a C4a/F4b B4a/A4 C4b C3b JB7 540 N/A I Low C4/5 Physiographic Province Southern Crystalline Ridges and Mountains Table 4. Project Background Information Project Name Puncheon Fork County Madison Project Area (acres) 13.15 Project Coordinates (latitude and longitude)Latitude: 35.96027 N Longitude: -82.533400 W Planted Acreage (Acres of Woody Stems Planted)6.75 Project Watershed Summary Information River Basin French Broad USGS Hydrologic Unit 14-digit 0610105130010 DWR Sub-basin 04-03-04 Reach Summary Information Parameters Length of reach (linear feet) Project Drainage Area (Acres and Square Miles)1,240 ac (1.94 mi2) Project Drainage Area Percentage of Impervious Area <1.1% Parameters Rosgen Stream Classification (existing) Perennial, Intermittent, Ephemeral NC SAM Rating Drainage area (Acres) NC SAM Rating Rosgen Stream Classification (existing) Drainage area (Acres) Perennial, Intermittent, Ephemeral Length of reach (linear feet) 0 2,0001,000 Feet Figure 1 - Site Location Map Puncheon ForkMitigation Project Mad ison County, North Carolina Legend Conser vation Easem ent Service Area - 06010105 TLW - 06010105130010 ©Date: 8/16/2022 Drawn by: GDS Checked by: RTM Document Path : R:\Resgis\entgis\Projects\100156_Pun cheon_Fork\MXD\6_Mon itoringMaintenance\M Y2 2022\Figure 1 - Vicinity Map - Pu ncheon Fork.mxd 1 inch = 2,000 feet Restoring a resilient earth for a mod ern wo rld Puncheon ForkProject Appendix B Visual Assessment Data WA WB WD WC WE WF WG WHWI WJ WK WL WM WN WO WP WQ WR WS WT WU WV 4 3 6 11 5 10 87 2 9 1 2 1 1 2 3 4 JB4-B JB2-A JB7 JB3-A JB2-B JB6-A JB4-C JB6-B JB5-B JB4-A JB5-A JB3-B JB1 JB5-C © 2023 Microsoft Corporation © 2023 Maxar ©CNES (2023) Distribution Airbus DS Figure 2 - MY3 CCPV Puncheon Fork Mitigation Project Madison County, North Carolina Date: 8/29/2023 Drawn by: KTO Do c u m e n t P a t h : R : \ R e s g i s \ e n t g i s \ P r o j e c t s \ 1 0 0 1 5 6 _ P u n c h e o n _ F o r k \ P R O \ M Y 3 \ 1 0 0 1 5 6 _ P u n c h e o n F o r k _ M Y 3 _ C C P V . a p r x Restoring a resilient earth for a modern world 0 250125 Feet Legend Conservation Easement Fixed Vegetation Plot >320 stems/acre <320 stems/acre Random Vegetation Plot >320 stems/acre Wetland Mitigation Enhancement (2:1) Enhancement (2.5:1) Stream Mitigation Restoration Enhancement I Enhancement II Enhancement II (4:1) Enhancement III No Credit Top of Bank Cross Section Structure Gauge Type Ambient Stage Recorder Supplemental Planting 0.1 acre Checked by: JRM1 inch = 250 feet Supplemental planting completed in Feb. 2023 GPA-1: Head-cut erosion under wattles. Erosion and poor herbaceous growth. Puncheon Fork MY3 Vegetation Monitoring Plot Photos – 8/16/2023 Vegetation Plot 1 Vegetation Plot 2 Vegetation Plot 3 Vegetation Plot 4 Random Vegetation Plot 1 Random Vegetation Plot 2 Puncheon Fork MY3 Monitoring Device Photos (8/16/2023) Stage Recorder JB2 Stage Recorder JB4 Stage Recorder JB6 Puncheon Fork MY3 Crossing Photos – 8/16/2023 JB1 looking downstream. JB1 looking upstream. JB1 looking downstream. JB1 looking upstream. JB3-A looking downstream. JB3-C looking upstream. JB4-B looking downstream. JB4-B looking upstream. JB6 looking downstream. JB6 looking upstream. Puncheon Fork Stream Repair – August 2023 JB5-C log sill repair JB5-C log sill repair JB5-C bank repair JB5-C bank repair Flexi Baffles at install in July Flexi Baffles in August General Problem Areas Puncheon Fork 2023 PhotoFeature Issue / Location GPA-1: Head-cut is migrating and cutting under wattle that was installed to prevent erosion. Appendix C Vegetation Plot Data Appendix C. Vegetation Assessment Data Table 5. Planted Species Summary Table 6. Vegetation Plot Mitigation Success Summary Common Name Scientific Name Mit Plan % Zone 1 Mit Plan % Zone 2 As-Built % (2021)As-Built % Zone 1 (2022) As-Built % Zone 2 (2022)Total Stems Planted Northern Red Oak1 Quercus rubra 15 0 18 0 0 950 White Oak1 Quercus alba 15 0 18 0 0 950 Chestnut Oak1 Quercus montana 10 0 14 0 0 750 American Sycamore1 Platanus occidentalis 0 15 12 0 0 650 Buttonbush1 Cephalanthus occidentalis 0 15 12 0 0 650 American Hornbeam2 Carpinus caroliniana 10 10 11 0 0 560 Northern Catalpa2 Catalpa speciosa 10 10 11 0 0 560 Green Ash1 Fraxinus pennsylvanica 0 0 4 0 0 250 Silky Dogwood3 Cornus ammomum 0 15 0 0 20 150 Yellow Poplar3 Liriodendron tulipifera 10 0 0 15 0 350 River Birch Betula nigra 0 15 0 0 0 0 Eastern Hemlock Tsuga canadensis 10 0 0 0 0 0 Sugar Maple3 Acer saccharum 10 0 0 15 0 350 American Basswood3 Tilia americana 10 0 0 15 0 350 Hazel Alder3 Alnus serrulata 0 10 0 0 30 200 Black Cherry3 Prunus serotina 0 0 0 10 0 250 American witchhazel3 Hamamelis virginiana 0 0 0 15 0 350 American Beech3 Fagus grandifolia 0 0 0 15 0 350 Black Willow3 Salix nigra 0 0 0 0 30 200 Sugarberry3 Celtis laevigata 0 10 0 15 20 500 8,370 9.12 918 2These species were planted on 5/3/2021 3These species were planted in March 2022 1These species were planted on 4/15/2021 Total Planted Area As-built Planted Stems/Acre Plot #Planted Stems/Acre Volunteer Stems/Acre Total Stems/Acre Success Criteria Met? Average Planted Stem Height (ft) 1 567 0 567 Yes 2.3 2 486 0 486 Yes 2.48 3 283 81 364 No 2.23 4 405 0 405 Yes 2.38 R1 445 0 445 Yes 2.21 R2 486 0 486 Yes 2.26 Project Avg 445 14 459 Yes 2.31 Appendix C. Vegetation Assessment Data Table 7. Stem Count Total and Planted by Plot Species PnoLS P-all T PnoLS P-all T PnoLS P-all T PnoLS P-all T PnoLS P-all T PnoLS P-all T Carpinus caroliniana American hornbeam Tree 2 2 2 Celtis occidentalis common hackberry Tree 2 2 2 Cephalanthus occidentalis common buttonbush Shrub 1 1 1 3 3 3 4 4 4 Fraxinus pennsylvanica green ash Tree 3 3 3 1 1 1 5 5 5 6 6 6 5 5 5 Liriodendron tulipifera tuliptree Tree 2 1 1 1 Platanus occidentalis American sycamore Tree 8 8 8 1 1 1 2 2 2 2 2 2 Quercus alba white oak Tree 2 2 2 3 3 3 1 1 1 Quercus montana Tree 1 1 1 2 2 2 1 1 1 Quercus rubra northern red oak Tree 5 5 5 4 4 4 1 1 1 Cornus amomum silky dogwood Tree Catalpa speciosa Northern catalpa Tree Salix nigra black willow Tree 14 14 14 12 12 12 7 7 9 10 10 10 11 11 11 12 12 12 3 3 3 5 5 5 5 5 6 3 3 3 4 4 4 4 4 4 567 567 567 486 486 486 283 283 364 405 405 405 445 445 445 486 486 486 PnoLS P-all T PnoLS P-all T PnoLS P-all T PnoLS P-all T Alnus serrulata Hazel Alder Tree 1 1 1 Carpinus caroliniana American hornbeam Tree 2 2 2 5 5 5 Celtis occidentalis common hackberry Tree 2 2 2 Cephalanthus occidentalis common buttonbush Shrub 8 8 8 4 4 4 7 7 7 9 9 9 Fraxinus pennsylvanica green ash Tree 20 20 20 9 9 9 9 9 9 10 10 10 Liriodendron tulipifera tuliptree Tree 1 1 3 12 Platanus occidentalis American sycamore Tree 13 13 13 14 14 14 11 11 11 14 14 14 Quercus alba white oak Tree 6 6 6 8 8 8 7 7 7 21 21 21 Quercus montana Chesnut Oak Tree 4 4 4 12 12 12 5 5 5 11 11 11 Quercus rubra northern red oak Tree 10 10 10 10 10 10 12 12 12 18 18 18 Cornus amomum silky dogwood Tree 2 2 2 Catalpa speciosa Northern catalpa Tree 2 2 2 Salix nigra black willow Tree 1 1 1 66 66 68 58 58 70 61 61 61 83 83 83 9 9 9 6 6 7 10 10 10 6 6 6 445 445 459 391 391 472 411 411 411 560 560 560Stems per ACRE Scientific Name Common Name Species Type Stem count size (ares) Current Plot Data (MY3 2023)Puncheon Fork Puncheon Fork size (ACRES) Species count Stem count Scientific Name Common Name Species Type Annual Means 4262021-01-R1 1 0.025 4262021-01-R2 1 0.025 4262021-01-0001 4262021-01-0002 4262021-01-0003 4262021-01-0004 MY3 (2023) MY2 (2022) MY1 (2021) MY0 (2021) size (ares) size (ACRES) Species count Stems per ACRE 1 0.025 1 0.025 1 0.025 1 0.025 6 0.148 6 0.148 6 0.148 6 0.148 Appendix D Stream Measurement and Geomorphology Data Parameter Gauge2 Dimension and Substrate - Riffle Only LL UL Eq.Min Mean Med Max SD5 n Min Mean Med Max SD5 n Min Med Max Min Mean Med Max SD5 n Bankfull Width (ft)---------------4.9 ------1 ---------------------5.6 ---------6.6 ------1 Floodprone Width (ft)------9.4 ------1 ---------------------15.6 --------->33.4 ------1 Bankfull Mean Depth (ft)---------------0.5 ------1 ---------------------0.4 ------------------1 1Bankfull Max Depth (ft)------0.8 ------1 ---------------------0.5 ---------0.8 ------1 Bankfull Cross Sectional Area (ft2)---------------2.5 ------1 ---------------------2.2 ---------3.2 ------1 Width/Depth Ratio ------9.6 ------1 ---------------------14.5 ------------------1 Entrenchment Ratio ------1.9 ------1 ---------------------2.8 --------->5.1 ------1 1Bank Height Ratio ------2.7 ------1 ---------------------1.0 ---------1.0 ------1 Riffle Length (ft)------------------------------------15 ---21 ------------------ Riffle Slope (ft/ft)--------------------------------------------------------------- Pool Length (ft)------------------------------------3 ---10 ------------------ Pool Max depth (ft)--------------------------------------------------------------- Pool Spacing (ft)------------------------------------4 ---31 ------------------ Channel Beltwidth (ft)------------------------------------15 ---26 15 ------26 ------ Radius of Curvature (ft)------------------------------------21 ---49 21 ------49 ------ Rc:Bankfull width (ft/ft)------------------------------------4 ---9 4 ------9 ------ Meander Wavelength (ft)------------------------------------86 ---105 86 ------105 ------ Meander Width Ratio ------------------------------------15 ---19 15 ------19 ------ 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) Channel slope (ft/ft) 3Bankfull Floodplain Area (acres) 4% of Reach with Eroding Banks Channel Stability or Habitat Metric Biological or Other Shaded cells indicate that these will typically not be filled in. 1 = The distributions for these parameters can include information from both the cross-section measurements and the longitudinal profile. 2 = For projects with a proximal USGS gauge in-line with the project reach (added bankfull verification - rare). 3. Utilizing XS measurement data produce an estimate of the bankfull floodplain area in acres, which should be the area from the top of bank to the toe of the terrace riser/slope. 4 = Proportion of reach exhibiting banks that are eroding based on the visual survey for comparison to monitoring data; 5. Of value/needed only if the n exceeds 3 0.088 0.088 ------------ 1.08 ---1.02 --- --- --- --- --- --- --- --- --- --- --- --- ------ ------ ------ 0.066 --- 1.02 ------------ 317 ---237 237 343 ---242 242 ------------ ------------ B4a ---C4b C4b Profile Pattern Transport parameters Additional Reach Parameters Table 8. Baseline Stream Data Summary Puncheon Fork Mitigation Site - Reach JB2-A Regional Curve Pre-Existing Condition Reference Reach(es) Data Design Monitoring Baseline Parameter Gauge2 Dimension and Substrate - Riffle Only LL UL Eq.Min Mean Med Max SD5 n Min Mean Med Max SD5 n Min Med Max Min Mean Med Max SD5 n Bankfull Width (ft)---------------3.3 ------1 ---------------------4.6 ---------6.1 ------1 Floodprone Width (ft)------3.5 ------1 ---------------------12.6 ---------8.8 ------1 Bankfull Mean Depth (ft)---------------0.5 ------1 ---------------------0.3 --------------------- 1Bankfull Max Depth (ft)------0.6 ------1 ---------------------0.4 ---------6.0 ------1 Bankfull Cross Sectional Area (ft2)---------------1.5 ------1 ---------------------1.4 ---------2.4 ------1 Width/Depth Ratio ------7.1 ------1 ---------------------15.4 --------------------- Entrenchment Ratio ------1.1 ------1 ---------------------2.7 ---------1.5 ------1 1Bank Height Ratio ------2.1 ------1 ---------------------1.0 ---------1.0 ------1 Riffle Length (ft)------------------------------------12 ---13 ------------------ Riffle Slope (ft/ft)--------------------------------------------------------------- Pool Length (ft)------------------------------------5 ---14 ------------------ Pool Max depth (ft)--------------------------------------------------------------- Pool Spacing (ft)------------------------------------6 ---28 ------------------ Channel Beltwidth (ft)------------------------------------6 ---17 6 ------17 ------ Radius of Curvature (ft)------------------------------------17 ---45 17 ------45 ------ Rc:Bankfull width (ft/ft)------------------------------------4 ---10 4 ------10 ------ Meander Wavelength (ft)------------------------------------67 ---83 67 ------83 ------ Meander Width Ratio ------------------------------------15 ---18 15 ------18 ------ 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) Channel slope (ft/ft) 3Bankfull Floodplain Area (acres) 4% of Reach with Eroding Banks Channel Stability or Habitat Metric Biological or Other Shaded cells indicate that these will typically not be filled in. 1 = The distributions for these parameters can include information from both the cross-section measurements and the longitudinal profile. 2 = For projects with a proximal USGS gauge in-line with the project reach (added bankfull verification - rare). 3. Utilizing XS measurement data produce an estimate of the bankfull floodplain area in acres, which should be the area from the top of bank to the toe of the terrace riser/slope. 4 = Proportion of reach exhibiting banks that are eroding based on the visual survey for comparison to monitoring data; 5. Of value/needed only if the n exceeds 3 ------ ------ ------ 0.074 ---0.063 0.063 ------------ 1.09 ---1.01 1.01 ------------ 239 ---135 135 261 ---137 137 ------------ ------------ Additional Reach Parameters B4a/A4 ---C4b C4b ------------ ------------ Pattern Transport parameters ------------ Profile Table 8. Baseline Stream Data Summary Puncheon Fork Mitigation Site - Reach JB4-B Regional Curve Pre-Existing Condition Reference Reach(es) Data Design Monitoring Baseline Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 3674.2 3674.4 3674.4 3674.4 3673.2 3673.1 3673.3 3673.3 3622.0 3622.1 3622.2 3622.1 3612.6 3612.7 3612.9 3612.9 3623.9 3623.5 3623.6 3623.7 Bankfull Width (ft)1 7.4 7.3 12.5 7.5 6.6 6.0 8.3 5.6 4.4 6.3 6.3 6.0 8.7 8.4 8.1 9.0 4.3 4.1 4.1 4.5 Floodprone Width (ft)1 --- --- --- --- >33.4 >35.3 >34.6 >35.7 10 9.2 9.8 9.2 --- --- --- --- --- --- --- --- Bankfull Max Depth (ft)2 1.7 1.1 1.2 1.2 0.8 1.0 0.7 0.8 0.9 0.7 0.8 0.7 0.7 2.1 1.0 2.3 1.3 1.6 1.7 1.6 Low Bank Elevation (ft) 3674.18 3674.1 3674.2 3674.2 3673.2 3673.2 3673.1 3673.1 3622.0 3622.2 3622.2 3625.2 3612.6 3613.8 3612.5 3613.9 3623.9 3623.8 3623.9 3624.1 Bankfull Cross Sectional Area (ft2)2 6.2 4.7 4.3 4.3 3.2 3.3 2.3 2.2 2.8 3.4 3.3 2.7 5.1 15.5 1.7 15.7 3.9 5.4 5.2 6.0 Bankfull Entrenchment Ratio1 --- --- --- --- >5.1 >5.9 >4.2 >6.4 2.2 1.5 1.6 1.5 --- --- --- --- --- --- --- --- Bankfull Bank Height Ratio1 --- --- --- --- 1.0 1.0 0.9 0.8 1.0 1.2 1.2 1.0 --- --- --- --- --- --- --- --- Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 3623.2 3623.0 3623.1 3623.1 3586.6 3586.5 3586.5 3586.6 3585.7 3585.7 3585.7 3585.7 3569.6 3569.6 3569.7 3569.7 3567.7 3568.1 3568.2 3567.9 Bankfull Width (ft)1 6.1 5.1 5.3 5.1 3.5 3.2 3.4 3.6 5.7 5.3 5.4 5.6 11.8 11.9 12.1 12.3 7.9 7.5 6.3 6.1 Floodprone Width (ft)1 8.8 7.9 8.3 8.6 11.4 10.0 10.7 8.7 --- --- --- --- >41.7 >41.8 >41.8 >42.1 --- --- --- --- Bankfull Max Depth (ft)2 0.6 0.9 0.6 0.8 0.6 0.9 0.9 0.8 0.6 0.7 0.8 0.7 1.3 1.6 1.5 1.7 1.5 1.0 1.2 1.6 Low Bank Elevation (ft) 3623.2 3623.2 3626.0 3623.2 3586.6 3586.7 3586.7 3586.8 3585.7 3585.7 3585.8 3585.9 3569.6 3570.0 3570.0 3570.1 3567.7 3567.8 3567.9 3568.0 Bankfull Cross Sectional Area (ft2)2 2.4 3.4 2.0 2.8 1.5 2.5 2.3 2.3 2.2 2.2 2.8 3.1 10.8 15.6 14.3 16.7 6.3 4.4 4.9 6.7 Bankfull Entrenchment Ratio1 1.5 1.5 1.6 1.7 3.2 3.2 3.2 2.4 --- --- --- --- >3.5 >3.5 >3.4 >3.4 --- --- --- --- Bankfull Bank Height Ratio1 1.0 1.3 0.9 1.1 1.0 1.4 1.3 1.3 --- --- --- --- 1.0 1.3 1.2 1.3 --- --- --- --- Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 3539.5 3539.7 3539.6 3539.7 3538.9 3538.8 3538.9 3538.9 Bankfull Width (ft)1 8.2 8.7 9.4 7.5 10.5 9.3 9.5 10.2 Floodprone Width (ft)1 --- --- --- --- >49.3 >49.2 >49.1 >49.3 Bankfull Max Depth (ft)2 1.5 1.6 1.4 1.6 1.3 1.5 1.4 1.3 Low Bank Elevation (ft) 3539.5 3539.7 3539.4 3539.7 3538.9 3539.0 3539.0 3539.0 Bankfull Cross Sectional Area (ft2)2 7.6 8.0 6.2 8.0 8.7 10.5 9.8 9.9 Bankfull Entrenchment Ratio1 --- --- --- --- >4.7 >5.3 >5.2 >4.9 Bankfull Bank Height Ratio1 --- --- --- --- 1.0 1.1 1.1 1.1 1 - Uses the as-built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Cross Section 11 (Pool) Cross Section 12 (Riffle) Cross Section 6 (Riffle) Cross Section 7 (Riffle) Cross Section 8 (Pool) Cross Section 9 (Riffle) Cross Section 10 (Pool) Appendix D. Table 9 - Monitoring Data - Dimensional Morphology Summary (Dimensional Parameters – Cross Sections) Puncheon Fork Cross Section 1 (Pool) Cross Section 2 (Riffle) Cross Section 3 (Riffle) Cross Section 4 (Pool) Cross Section 5 (Pool) 1 - Uses the as-built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream 3672 3673 3674 3675 3676 3677 3678 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 El e v a t i o n ( f t ) Distance (ft) Puncheon Fork -Reach JB2-A - Cross Section 1 -Pool - Restoration MY0 2021 MY1 2021 MY2 2022 MY3 2023 Approx. Bankfull Low Bank Elevation 3X Vertical Exaggeration MY0 MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 3674.18 3674.4 3674.4 3674.4 Bankfull Width (ft)1 7.4 7.3 12.5 7.5 Floodprone Width (ft)1 --- --- --- --- Bankfull Max Depth (ft)2 1.7 1.1 1.2 1.2 Low Bank Elevation (ft)3674.18 3674.1 3674.2 3674.2 Bankfull Cross Sectional Area (ft2)2 6.2 4.7 4.3 4.3 Bankfull Entrenchment Ratio1 --- --- --- --- Bankfull Bank Height Ratio1 --- --- --- --- Cross Section 1 (Pool) 1 - Uses the as-built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream 3672 3673 3674 3675 3676 3677 3678 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 El e v a t i o n ( f t ) Distance (ft) Puncheon Fork -Reach JB2-A - Cross Section 2 -Riffle - Restoration MY0 2021 MY1 2021 MY2 2022 MY3 2023 Approx. Bankfull Floodprone Area Low Bank Elevation 3X Vertical Exaggeration MY0 MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 3673.16 3673.1 3673.3 3673.3 Bankfull Width (ft)1 6.6 6.0 8.3 5.6 Floodprone Width (ft)1 >33.4 >35.3 >34.6 >35.7 Bankfull Max Depth (ft)2 0.8 1.0 0.7 0.8 Low Bank Elevation (ft) 3673.16 3673.2 3673.1 3673.1 Bankfull Cross Sectional Area (ft2)2 3.2 3.3 2.3 2.2 Bankfull Entrenchment Ratio1 >5.1 >5.9 >4.2 >6.4 Bankfull Bank Height Ratio1 1.0 1.0 0.9 0.8 Cross Section 2 (Riffle) 1 - Uses the as-built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream 3621 3622 3623 3624 3625 3626 3627 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 El e v a t i o n ( f t ) Distance (ft) Puncheon Fork -Reach JB3-B - Cross Section 3 -Riffle - Enhancement I MY0 2021 MY1 2021 MY2 2022 MY3 2023 Approx. Bankfull Floodprone Area Low Bank Elevation 3X Vertical Exaggeration MY0 MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 3621.95 3622.1 3622.2 3622.1 Bankfull Width (ft)1 4.4 6.3 6.3 6.0 Floodprone Width (ft)1 10 9.2 9.8 9.2 Bankfull Max Depth (ft)2 0.9 0.7 0.8 0.7 Low Bank Elevation (ft) 3621.95 3622.2 3622.2 3625.2 Bankfull Cross Sectional Area (ft2)2 2.8 3.4 3.3 2.7 Bankfull Entrenchment Ratio1 2.2 1.5 1.6 1.5 Bankfull Bank Height Ratio1 1.0 1.2 1.2 1.0 Cross Section 3 (Riffle) 1 - Uses the as-built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream 3611 3612 3613 3614 3615 3616 3617 11 14 17 20 23 26 29 32 35 38 41 44 47 El e v a t i o n ( f t ) Distance (ft) Puncheon Fork -Reach JB3-B - Cross Section 4 -Pool - Enhancement I MY0 2021 MY1 2021 MY2 2022 MY3 2023 Approx. Bankfull Low Bank Elevation 3X Vertical Exaggeration MY0 MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 3612.61 3612.7 3612.9 3612.9 Bankfull Width (ft)1 8.7 8.4 8.1 9.0 Floodprone Width (ft)1 --- --- --- --- Bankfull Max Depth (ft)2 0.7 2.1 1.0 2.3 Low Bank Elevation (ft) 3612.61 3613.8 3612.5 3613.9 Bankfull Cross Sectional Area (ft2)2 5.1 15.5 1.7 15.7 Bankfull Entrenchment Ratio1 --- --- --- --- Bankfull Bank Height Ratio1 --- --- --- --- Cross Section 4 (Pool) 1 - Uses the as-built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream 3622 3623 3624 3625 3626 3627 3628 20 23 26 29 32 35 38 41 El e v a t i o n ( f t ) Distance (ft) Puncheon Fork -Reach JB4-B - Cross Section 5 -Pool - Restoration MY0 2021 MY1 2021 MY2 2022 MY3 2023 Approx. Bankfull Low Bank Elevation 3X Vertical Exaggeration MY0 MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 3623.89 3623.5 3623.6 3623.7 Bankfull Width (ft)1 4.3 4.1 4.1 4.5 Floodprone Width (ft)1 --- --- --- --- Bankfull Max Depth (ft)2 1.3 1.6 1.7 1.6 Low Bank Elevation (ft) 3623.89 3623.8 3623.9 3624.1 Bankfull Cross Sectional Area (ft2)2 3.9 5.4 5.2 6.0 Bankfull Entrenchment Ratio1 --- --- --- --- Bankfull Bank Height Ratio1 --- --- --- --- Cross Section 5 (Pool) 1 - Uses the as-built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream 3622 3623 3624 3625 3626 3627 3628 17 20 23 26 29 32 35 El e v a t i o n ( f t ) Distance (ft) Puncheon Fork -Reach JB4-B - Cross Section 6 -Riffle - Restoration MY0 2021 MY1 2021 MY2 2022 MY3 2023 Approx. Bankfull Floodprone Area Low Bank Elevation 3X Vertical Exaggeration MY0 MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 3623.22 3623.0 3623.1 3623.1 Bankfull Width (ft)1 6.1 5.1 5.3 5.1 Floodprone Width (ft)1 8.8 7.9 8.3 8.6 Bankfull Max Depth (ft)2 0.6 0.9 0.6 0.8 Low Bank Elevation (ft) 3623.22 3623.2 3626.0 3623.2 Bankfull Cross Sectional Area (ft2)2 2.4 3.4 2.0 2.8 Bankfull Entrenchment Ratio1 1.5 1.5 1.6 1.7 Bankfull Bank Height Ratio1 1.0 1.3 0.9 1.1 Cross Section 6 (Riffle) 1 - Uses the as-built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream 3585 3586 3587 3588 3589 3590 3591 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 El e v a t i o n ( f t ) Distance (ft) Puncheon Fork -Reach JB4-C - Cross Section 7 -Riffle - Enhancement I MY0 2021 MY1 2021 MY2 2022 MY3 2023 Approx. Bankfull Floodprone Area Low Bank Elevation 3X Vertical Exaggeration MY0 MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 3586.60 3586.5 3586.5 3586.6 Bankfull Width (ft)1 3.5 3.2 3.4 3.6 Floodprone Width (ft)1 11.4 10.0 10.7 8.7 Bankfull Max Depth (ft)2 0.6 0.9 0.9 0.8 Low Bank Elevation (ft) 3586.60 3586.7 3586.7 3586.8 Bankfull Cross Sectional Area (ft2)2 1.5 2.5 2.3 2.3 Bankfull Entrenchment Ratio1 3.2 3.2 3.2 2.4 Bankfull Bank Height Ratio1 1.0 1.4 1.3 1.3 Cross Section 7 (Riffle) 1 - Uses the as-built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream 3585 3586 3587 3588 3589 3590 3591 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 El e v a t i o n ( f t ) Distance (ft) Puncheon Fork -Reach JB4-C - Cross Section 8 -Pool - Enhancement I MY0 2021 MY1 2021 MY2 2022 MY3 2023 Approx. Bankfull Low Bank Elevation 3X Vertical Exaggeration MY0 MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 3585.72 3585.7 3585.7 3585.7 Bankfull Width (ft)1 5.7 5.3 5.4 5.6 Floodprone Width (ft)1 --- --- --- --- Bankfull Max Depth (ft)2 0.6 0.7 0.8 0.7 Low Bank Elevation (ft) 3585.72 3585.7 3585.8 3585.9 Bankfull Cross Sectional Area (ft2)2 2.2 2.2 2.8 3.1 Bankfull Entrenchment Ratio1 --- --- --- --- Bankfull Bank Height Ratio1 --- --- --- --- Cross Section 8 (Pool) 1 - Uses the as-built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream 3568 3569 3570 3571 3572 3573 3574 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 El e v a t i o n ( f t ) Distance (ft) Puncheon Fork -Reach JB5-C - Cross Section 9 -Riffle - Enhancement I MY0 2021 MY1 2021 MY2 2022 MY3 2023 Approx. Bankfull Floodprone Area Low Bank Elevation 3X Vertical Exaggeration MY0 MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 3569.62 3569.6 3569.7 3569.7 Bankfull Width (ft)1 11.8 11.9 12.1 12.3 Floodprone Width (ft)1 >41.7 >41.8 >41.8 >42.1 Bankfull Max Depth (ft)2 1.3 1.6 1.5 1.7 Low Bank Elevation (ft)3569.62 3570.0 3570.0 3570.1 Bankfull Cross Sectional Area (ft 2 )2 10.8 15.6 14.3 16.7 Bankfull Entrenchment Ratio 1 >3.5 >3.5 >3.4 >3.4 Bankfull Bank Height Ratio 1 1.0 1.3 1.2 1.3 Cross Section 9 (Riffle) 1 - Uses the as-built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream 3566 3567 3568 3569 3570 3571 3572 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 El e v a t i o n ( f t ) Distance (ft) Puncheon Fork -Reach JB5-C - Cross Section 10 -Pool - Enhancement I MY0 2021 MY1 2021 MY2 2022 MY3 2023 Approx. Bankfull Low Bank Elevation 3X Vertical Exaggeration MY0 MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 3567.74 3568.1 3568.2 3567.9 Bankfull Width (ft)1 7.9 7.5 6.3 6.1 Floodprone Width (ft)1 --- --- --- --- Bankfull Max Depth (ft)2 15.0 1.0 1.2 1.6 Low Bank Elevation (ft) 3567.74 3567.8 3567.9 3568.0 Bankfull Cross Sectional Area (ft2 )2 6.3 4.4 4.9 6.7 Bankfull Entrenchment Ratio 1 --- --- --- --- Bankfull Bank Height Ratio 1 --- --- --- --- Cross Section 10 (Pool) 1 - Uses the as-built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream 3538 3539 3540 3541 3542 3543 3544 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 El e v a t i o n ( f t ) Distance (ft) Puncheon Fork -Reach JB6-A - Cross Section 11 -Pool - Enhancement I MY0 2021 MY1 2021 MY2 2022 MY3 2023 Approx. Bankfull Low Bank Elevation 3X Vertical Exaggeration MY0 MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 3539.48 3539.7 3539.6 3539.7 Bankfull Width (ft)1 8.2 8.7 9.4 7.5 Floodprone Width (ft)1 --- --- --- --- Bankfull Max Depth (ft)2 1.5 1.6 1.4 1.6 Low Bank Elevation (ft) 3539.48 3539.7 3539.4 3539.7 Bankfull Cross Sectional Area (ft2)2 7.6 8.0 6.2 8.0 Bankfull Entrenchment Ratio 1 --- --- --- --- Bankfull Bank Height Ratio 1 --- --- --- --- Cross Section 11 (Pool) 1 - Uses the as-built cross sectional area as the basis for adjusting each subsequent years bankfull elevation 2 - Uses the current years low top of bank as the basis for adjusting each subsequent years bankfull elevation Upstream Downstream 3537 3538 3539 3540 3541 3542 3543 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 El e v a t i o n ( f t ) Distance (ft) Puncheon Fork -Reach JB6-A - Cross Section 12 -Riffle - Enhancement I MY0 2021 MY1 2021 MY2 2022 MY3 2023 Approx. Bankfull Floodprone Area Low Bank Elevation 3X Vertical Exaggeration MY0 MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 3538.89 3538.8 3538.9 3538.9 Bankfull Width (ft)1 10.5 9.3 9.5 10.2 Floodprone Width (ft)1 >49.3 >49.2 >49.1 >49.3 Bankfull Max Depth (ft)2 1.3 1.5 1.4 1.3 Low Bank Elevation (ft) 3538.89 3539.0 3539.0 3539.0 Bankfull Cross Sectional Area (ft2 )2 8.7 10.5 9.8 9.9 Bankfull Entrenchment Ratio 1 >4.7 >5.3 >5.2 >4.9 Bankfull Bank Height Ratio 1 1.0 1.1 1.1 1.1 Cross Section 12 (Riffle) Appendix E Hydrology Data Table 12. Rainfall Summary MY3 2023 Table 13. Documentation of Geomorphically Significant Flow Events 30 Percent 70 Percent January 3.25 2.34 3.84 5.36 February 2.84 2.16 3.31 5.54 March 3.80 2.89 4.43 4.30 April 3.71 2.78 4.33 4.76 May 3.83 2.89 4.47 4.54 June 4.16 3.14 4.81 4.40 July 4.34 3.28 5.06 5.83 August 3.80 2.54 4.55 8.73 September 3.34 2.13 4.02 - October 2.35 1.19 2.87 - November 2.81 1.88 3.36 - December 3.40 2.38 4.03 - Total Annual ** 41.60 37.62 45.01 43.46 Above Normal Limits Below Normal Limits Month Average Normal Limits 2023 Jessen Station Precipitation* *Jessen CRONOS Station is approximately 9 miles northeast of the site. **Total Annual represents the average total precipitation, annually, as calculated by the 30-year period. August data is incomplete and contains data from 8/1/2023 to 8/22/2023 MY1 2021 0 N/A MY2 2022 0 N/A MY3 2023 0 N/A MY1 2021 0 N/A MY2 2022 0 N/A MY3 2023 0 N/A MY1 2021 2 0.22 MY2 2022 2 0.10 MY3 2023 2 0.36 8/3/2023 N/A N/A 5/27/2022 Year Number of Bankfull Events Maximum Bankfull Height (ft)Date of Maximum Bankfull Event Stage Recorder JB2-A N/A N/A Stage Recorder JB4-B N/A N/A Stage Recorder JB6-A 8/17/2021 0.000 1.000 2.000 3.000 4.000 5.000 6.000 7.000 8.000 9.000 10.000 -2 -1 0 1 2 3 4 Pr e c i p i t a t i o n ( i n ) St a g e ( f t ) Date MY3 Puncheon Fork JB2-A Stage Recorder Graph Daily Precip (in)SR JB2-A Top of Bank Stream Bed Max Event - 0.01 ft. BELOW TOB 8/3/2023 0.000 1.000 2.000 3.000 4.000 5.000 6.000 7.000 8.000 9.000 10.000 -2 -1 0 1 2 3 4 Pr e c i p i t a t i o n ( i n ) St a g e ( f t ) Date MY3 Puncheon Fork JB4-B Stage Recorder Graph Daily Precip (in)SR JB4-B Top of Bank Stream Bed Max Event - 0.15 ft. BELOW TOB 8/3/2023 0.000 1.000 2.000 3.000 4.000 5.000 6.000 7.000 8.000 9.000 10.000 -2 -1 0 1 2 3 4 Pr e c i p i t a t i o n ( i n ) St a g e ( f t ) Date MY3 Puncheon Fork JB6-A Stage Recorder Graph Daily Precip (in)SR JB6-A Top of Bank Stream Bed Max Event - 0.36 ft. above TOB 8/3/2023