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HomeMy WebLinkAbout20140153 Ver 1_Year 5 Monitoring Report_2020_20210105ID#* 20140153 Version* 1 Select Reviewer:* Erin Davis Initial Review Completed Date 01/05/2021 Mitigation Project Submittal - 1/5/2021 Is this a Prospectus, Technical Proposal or a New Site?* O Yes a No Type of Mitigation Project:* rJ Stream rJ Wetlands [Buffer ❑ Nutrient Offset (Select all that apply) Project Contact Information Contact Name:* Paul Wiesner Project Information .................................................................................................................................................................. ID#:* 20140153 Existing 1W Project Type: F DMS r Mitigation Bank Project Name: Owls Den Mitigation Site County: Lincoln Document Information Email Address:* paul.wiesner@ncdenr.gov Version: * 1 Existing Version Mitigation Document Type:* Mitigation Monitoring Report File Upload: OwisDen_95808_MY5_2020.pdf 13.09MB Rease upload only one R7F of the complete file that needs to be subrritted... Signature Print Name:* Paul Wiesner Signature:* C5vaell / c�c 't• MONITORING YEAR 5 -'vL'S DEN MITIGATION SITE Lincoln County, NC ANNUAL REPORT DEQ Contract 005150 FINAL DMS Project Number 95808 DWR No. 14-0153 USACE Action ID No. SAW-2010-00717 Catawba River Basin HUC 03050102 Data Collection Period: March - November 2020 Submission Date: December 21, 2020 PREPARED FOR: 1� NC Department of Environmental Quality Division of Mitigation Services 1652 Mail Service Center Raleigh, NC 27699-1652 WILDLANDS ENGINEERING December 21, 2020 Mr. Paul Wiesner NC Department of Environmental Quality Division of Mitigation Services 5 Ravenscroft Dr., Suite 102 Asheville, NC 28801 RE: Owl's Den Mitigation Site -Year 5 Monitoring Report Final Submittal for DMS Contract Number 005150, DMS# 95808 Catawba River Basin — CU# 03050102; Lincoln County, NC Providing mitigation for CU#03050103 (Catawba ESA) Dear Mr. Wiesner: Wildlands Engineering, Inc. (Wildlands) has reviewed the Division of Mitigation Services (DMS) comments and observations from the Owl's Den Mitigation Site Draft Year 5 Monitoring Report. The report text has been revised for the final draft to reflect the most current condition of the site. The following are your comments and observations from the report and are noted in Bold. Wildlands' response to those comments are noted in Italics. DMS Comment: Section 1.2.5 - Areas of Concern/Adaptive Management Plan: Please update this section to indicate when these dams were removed and beaver trapped or provide a scheduled removal/ trapping date/s. DMS recommends removing beaver and beaver dams as soon as possible to avoid potential irregular monitoring data, project damage and additional project maintenance. Wildlands Response: The report and figures have been updated to reflect that the dams were removed in early December of 2020. Wildlands is currently monitoring for continued beaver activity and will address in Q1 of MY6, if needed. DMS Comment: 1.2.5 Areas of Concern/ Adaptive Management Plan: "In MY5, low stem density areas (0.1 Ac), previously noted in MY5, continue to persist/ have low stem density." Please review and correct. Wildlands Response: The text has been updated so that the low stem density area was first noted in MY4. DMS Comment: Section 1.3. Please update. This should be "Monitoring Year 5 Summary". Wildlands Response: The heading for Section 1.3 has been updated. Wildlands Engineering, Inc. • phone 704-332-7754 • fax 704-332-3306 • 1430 S. Mint Street, # 104 • Charlotte, NC 28203 WILDLANDS E N G I N EER I NO DMS Comment: Project Components and Mitigation Credits and Report Text (Executive Summary & Project Overview): A very minor rounding issue exists in the asset table (Table 1). Please make the following update so the final MY5 report matches the DMS asset accounting system (CRM) and 2021 credit ledger. Please update Wetland A to 0.338 in the credit column. Please also update the Riparian Wetland Credit Total at the top of the table to 8.938 WMUs. Please review and update the report text as necessary. Please utilize the updated credit amounts in future reports as well. Wildlonds Response: Table 1 and the report text hove been updated to reflect these changes. The updated credits amounts will be used in future reports os well. DMS Comment: Stream and Wetland Photographs & Cross Sections: The project photographs were taken in March 2020 and the cross section data was collected in March 2020. In the future, it would be helpful to take photographs and collect cross section data later in the applicable monitoring year so the report better represents conditions later in the growing season. Wildlonds Response: The photographs were collected in March so that vegetation would not block the view of the channel. In future monitoring years Wildlonds will make o best effort to collect the stream photographs and cross section survey later during the growing season, if workload scheduling allows. DMS Comment: Cross Section 1 & Cross Section 2: The photographs for these cross sections show what appears to be flooding or back water with no defined bed and bank; however, no beaver dams were reported along this reach. Please explain and update the report text if necessary. Wildlonds Response: There was o beaver dam present on the stream channel downstream of XS2 during the time of survey. This contributed to the floodploin inundation present in the cross-section photos. Soon after survey, the dam was cleared from the channel. The dam was not present on the channel during the November 2020 Site walk, which is why it was not included on the CCPV mops. The dam has been added to the CCPV mops for reference and text with o note that it was removed in March 2020. Enclosed please find two (2) hard copies of the Year 5 Final Monitoring Report and one (1) CD with all the final corrected electronic files for DMS distribution. Please contact me at 704-332-7754 x101 if you have any questions. Sincerely, s Kristi Suggs ksuggs@wildlandseng.com Wildlands Engineering, Inc. • phone 704-332-7754 • fax 704-332-3306 • 1430 S. Mint Street, # 104 • Charlotte, NC 28203 PREPARED BY: WILDLANDS ENGINEERING 1430 South Mint Street, Suite 104 Charlotte, NC 28203 Phone: 704.332.7754 Fax: 704.332.3306 EXECUTIVE SUMMARY Wildlands Engineering Inc. (Wildlands) implemented a full delivery project at the Owl's Den Mitigation Site (Site) for the North Carolina Division of Mitigation Services (DIMS) to restore 2,453 linear feet (LF) of perennial streams, rehabilitate 2.82 acres of existing wetlands, and re-establish 6.77 acres of wetlands in Lincoln County, NC. The Site is expected to generate 2,453.000 stream mitigation units (SMUs) and 8.938 riparian wetland mitigation units (WMUs) (Table 1). The Site is located near the City of Lincolnton in Lincoln County, NC within the DIMS targeted watershed for the Catawba River Basin Hydrologic Unit Code (HUC) 03050102040040 and NCDWR Subbasin 03-08- 35 (Figure 1) and is being submitted for mitigation credit in the Catawba River Basin HUC 03050103 within the expanded service area of this HUC. The project streams consist of two unnamed tributaries to Howards Creek, HC1 and HC2 (Figure 2). Howards Creek eventually flows into the South Fork Catawba River near the City of Lincolnton in Lincoln County. The adjacent land to the streams and wetlands is maintained for agricultural purposes. The Site is located in the Howards Creek watershed and is within a Targeted Local Watershed (TLW) identified in NCDMS 2007 Catawba River Basin Restoration Priority Plan (RBRP). The Site is also identified in the Indian Creek and Howards Creek Local Watershed Plan (LWP) Project Atlas (DIMS, 2010). The Indian and Howards Creek LWP identified stream channelization and dredging, incised channels and unstable stream banks, deforested riparian buffers, drained and cleared wetlands, and nutrient inputs to streams and wetlands as major stressors within this watershed. The LWP Project Atlas identified the Owl's Den Mitigation Site as a restoration opportunity with the potential to improve water quality, habitat, and hydrology within the Howards Creek watershed. The project goals established in the mitigation plan (Wildlands, 2014) were completed with careful consideration of goals and objectives that were described in the RBRP and to address stressors identified in the LWP. The following project goals established include: • Correct hydrologic modifications to streams including stream incision and dredging, bank erosion, lowering of the local water table, sedimentation, and loss of riparian buffer and floodplain functions; • Improve hydrology and function of previously drained and cleared wetlands; • Re-establish riparian buffer and wetland vegetation communities; • Reduce excess sediment to downstream waters by stabilizing streams and revegetating site; and • Reduce nutrient loads to downstream waters by improving wetlands and buffers to treat runoff. Secondary project goals include: • Improve instream habitat by diversifying the stream bedform and introducing habitat structures and wood debris. • Reduce agricultural pollution from pesticides and herbicides used on adjacent fields by improving wetland and buffers to treat runoff. The Site construction and as -built surveys were completed between May 2015 and August 2015. A conservation easement is in place on 12.87 acres of the riparian corridors to protect them in perpetuity. Monitoring Year (MY) five (5) assessments and Site visits were completed between March and November 2020 to assess the condition of the project. Detailed monitoring and analysis of vegetation and channel cross -sectional dimensions, visual observation data, hydrology data, and management practices are included in this report. Overall, the Site has met the required vegetation, stream hydrology success criteria for MY5. Based on the geomorphic survey, the stream channels have remained stable during MY5. The Site's vegetation Owl's Den Mitigation Site Monitoring Year 5 Annual Report— FINAL assessment resulted in an average of 498 planted stems per acre, which exceeds the MY5 success criteria of 260 stems per acre and is on track to meet the MY7 success criteria of 210 stems per acre. Consistent baseflow flow and multiple bankfull events were recorded on all streams during MY5. Beaver dams have been identified and removed on the site throughout the monitoring year and will continue to be addressed as needed. The majority of wetland gages (14 of 15) met the wetland hydrology success criteria during MY5. While a few small issues are being monitored, it is anticipated the Site will meet all success criteria at closeout. Owl's Den Mitigation Site Monitoring Year 5 Annual Report— FINAL OWL'S DEN MITIGATION SITE Monitoring Year 5 Annual Report TABLE OF CONTENTS Section 1: PROJECT OVERVIEW......................................................................................1-1 1.1 Project Goals and Objectives.....................................................................................................1-1 1.2 Monitoring Year 5 Data Assessment..........................................................................................1-2 1.2.1 Stream Assessment............................................................................................................1-2 1.2.2 Stream Hydrology Assessment..........................................................................................1-3 1.2.3 Vegetative Assessment......................................................................................................1-3 1.2.4 Wetland Assessment..........................................................................................................1-3 1.2.5 Areas of Concern/Adaptive Management Plan.................................................................1-4 1.3 Monitoring Year 4 Summary......................................................................................................1-5 Section 2: METHODOLOGY.............................................................................................2-1 Section 3: REFERENCES.................................................................................................. 3-1 Appendix 1 General Figures and Tables 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 Contact Table Table 4 Project Information and Attributes Appendix 2 Visual Assessment Data Figure 3.0-3.3 Integrated Current Condition Plan View Table 5a-c Visual Stream Morphology Stability Assessment Table Table 6 Vegetation Condition Assessment Table Stream Photographs Vegetation Photographs Wetland Photographs Area of Concern Photographs Appendix 3 Vegetation Plot Data Table 7 Vegetation Plot Criteria Attainment Table Table 8 CVS Vegetation Plot Metadata Table 9 Planted and Total Stems (Species by Plot with Annual Means) Appendix 4 Morphological Summary Data and Plots Table 10a-b Baseline Stream Data Summary Table 11a-b Morphology and Hydraulic Summary (Dimensional Parameters — Cross -Section) Table 12a-c Monitoring Data — Stream Reach Data Summary Cross -Section Plots Appendix 5 Hydrology Summary Data and Plots Table 13 Verification of Bankfull Events Stream Gage Plots Table 14 Wetland Gage Attainment Summary Groundwater Gage Plots Monthly Rainfall Data Owl's Den Mitigation Site Monitoring Year 5 Annual Report— FINAL Section 1: PROJECT OVERVIEW The Site is located in central Lincoln County within the Catawba River Basin (USGS Hydrologic Unit 03050102) and is located off of Owl's Den Road northwest of Lincolnton, North Carolina. The Site is located in in the Inner Piedmont Belt of the Piedmont Physiographic Province (USGS, 1998). The project watershed is dominated by agricultural and forested land. The drainage area for the Site is 152 acres. (0.24 square miles). The project streams include unnamed tributaries to Howards Creek (HC1 and HC2). Stream restoration reaches included HC1 (Reach 1 and 2) and HC2 comprising 2,453 linear feet (LF) of perennial stream channel. The riparian areas were planted with native vegetation to improve habitat and protect water quality. Wetland components included rehabilitating 2.82 acres of existing wetlands and re-establishing 6.77 acres of wetlands. Construction activities were completed by Land Mechanic Designs, Inc. in July 2015. Planting and seeding activities were completed by Bruton Natural Systems, Inc. in January 2016. A conservation easement has been recorded and is in place on 12.87 acres (Deed Book 2455, Page Number 864) within a tract owned by Owl's Den Farm, LLC. The project is expected to generate 2,453.000 stream mitigation units (SMU's) and 8.938 wetland mitigation units (WMUs). Annual monitoring will be conducted for seven years with the close-out anticipated to commence in 2023 given the success criteria are met. Appendix 1 provides more detailed project activity, history, contact information, and watershed/site background information for this project. Directions and a map of the Site are provided in Figure 1 and project components are illustrated for the Site in Figure 2. 1.1 Project Goals and Objectives Prior to construction activities, the streams on the Site had been straightened, widened, and deepened to provide drainage for surrounding cropland. The adjacent floodplain areas had been cleared and maintained to support agricultural activities. Table 10a and b in Appendix 4 present the pre -restoration conditions in detail. The Site will help address stressors identified in the LWP and provide numerous ecological benefits within the Catawba River Basin. While many of these benefits are limited to the Owl's Den project area, others, such as pollutant removal, reduced sediment loading, and improved aquatic and terrestrial habitat, have farther -reaching effects. Expected improvements to water quality and ecological processes are outlined below as project goals and objectives. These project goals established were completed with careful consideration of goals and objectives that were described in the RBRP and address stressors identified in the LWP while also meeting the DIMS mitigation needs. The primary objectives of the Owl's Den Mitigation Site address stressors identified in the LWP and included the following: Correct hydrologic modifications to streams including stream incision and dredging, bank erosion, lowering of the local water table, sedimentation, and loss of riparian buffer and floodplain functions. The project re -connected streams with a stable floodplain using Priority 1 restoration techniques. The Priority 1 restoration eliminated vertically incised channels on site. Stream banks were stabilized with grading, in -stream structures, and planting. By stabilizing stream banks on site, sediment loading should be reduced in the receiving watershed. Improve hydrology and function of previously drained and cleared wetlands. The project restored hydrologic connections to existing wetlands using Priority 1 stream restoration to raise Owl's Den Mitigation Site Monitoring Year 5 Annual Report— FINAL 1-1 the local water table and increase overbank flooding. The project extended existing wetland zones into adjacent areas and established wetland vegetation throughout the site. • Re-establish wetland hydrology and function in relic wetland areas. Removal of historic overburden uncovered relic hydric soils and should bring local water table elevations closer to the ground surface. Disking and roughening of wetland re-establishment areas should increase retention times and improve natural infiltrative processes. • Re-establish riparian buffer and wetland vegetation communities. A native vegetation community was planted on the site to revegetate the riparian buffers and wetlands and return the functions associated with these wooded areas. • Reduce excess sediment to downstream waters by stabilizing streams and revegetating site. Stream banks were stabilized on all project reaches. The site was also revegetated with a native forest community to prevent erosion and sedimentation from overland runoff of agricultural lands and filter runoff from adjacent fields. • Reduce nutrient and agricultural pollutant inputs to streams and wetlands. Increased retention times along with reestablished vegetation in restored wetland areas will reduce fertilizers used in blackberry and soybean agricultural production before runoff enters the streams. Secondary project goal includes: Improve instream habitat by diversifying the stream bedform and introducing habitat structures and woody debris. Large woody debris, brush toe meander bends, other woody structures, and native stream bank vegetation were installed to improve both instream and terrestrial habitat value throughout the riparian corridor. Reduce agricultural pollution from pesticides and herbicides used on adjacent fields by improving wetlands and buffers to treat runoff. Restored wetland areas will provide treatment for agricultural runoff from blackberry and soy bean fields that are sprayed with pesticides and herbicides. 1.2 Monitoring Year 5 Data Assessment Annual monitoring and quarterly site visits were conducted during MY5 to assess the condition of the project. The stream, vegetation, and hydrologic success criteria for the Site follows the approved success criteria presented in the Owl's Den Mitigation Plan (Wildlands, 2014). The following sections provide detailed monitoring and analysis of vegetation and channel cross -sectional dimensions, visual observation data, hydrology data, and management practices observed during MY5. 1.2.1 Stream Assessment A detailed morphological survey was conducted in March 2020. Three of the riffle cross -sections (XS) along tributary HC1 (XS2, XS4, and XS6) show a slight 0.1 decrease in Bank Height Ratio (BHR) when compared to the MYO bankfull area elevation. However, the stream in these areas is maintaining channel form indicating that the channel is able to transport its sediment load and maintain stability. At the downstream end of HC1 R2 riffle XS8's top of bank height has raised due to fine sediment deposition from the main channel of Howard's Creek. In addition to elevated banks, this has resulted in a narrower channel with an increased cross -sectional area. The overall increase in cross -sectional area from MYO to MY5 is 1.3%. The MY5 low bank height for XS8 (765.1 ft) is 3 feet higher than the original low bank height at MYO (762.1 ft), resulting in a BHR of 1.6. However, the bed of the riffle has maintained the same elevation (760.8 ft) as MYO. Although the channel is impacted by backwater from Howard's Creek and is experiencing deposition, the channel does not appear to be vertically or laterally unstable and is not exhibiting signs of instability. Owl's Den Mitigation Site Monitoring Year 5 Annual Report— FINAL 1-2 The downstream pools along tributary HC1 have aggraded and reduced cross -sectional area in MY5. XS5 had a 37% reduction in cross -sectional area from 24.9 Win MYO to 15.5 Win MY5. XS7 had a 40% reduction in cross -sectional area from 13.9 ft2 in MYO to 8.1 ft2 in MY5. The aggradation observed is probably due to aggradation from Howards Creek backwater at the downstream end of HC1. At the time of survey, these downstream pools most likely had not been flushed or scoured by a large rain event. Overall, HC1 R1 and R2 are stable and the channels have maintained a stable pool -riffle sequence. All riffles and pools on tributary HC2 remained stable during the monitoring year 5 survey. Based on field observations, the majority of the project reaches within the Site appear stable and functioning as designed, refer to Tables 5a-5c for Site walk data. Refer to Appendix 2 for the visual stability assessment tables, Integrated Current Condition Plan View (CCPV) maps, and reference photographs. 1.2.2 Stream Hydrology Assessment The stream hydrology success criteria were met within the first two years of monitoring on HC1 and HC2. Both streams continued to record bankfull or greater events in MY5. The hydrographs for both streams show prolonged floodplain inundation that is most likely due to beaver dam influence. The automated stream gage on HC2 malfunctioned during early 2020 but was replaced in April 2020 and functioning since. Refer to Appendix 5 for hydrologic summary data and plots. 1.2.3 Vegetative Assessment All vegetation plots individually met the MY5 success criteria of 260 stems per acre. The average planted stem height in MY5 was 8.5 feet and is on track to meet the success criteria of an average planted stem height of 10 feet in the planted riparian and wetland corridor by MY7. The individual stem density per plot data is available in Appendix 3. During the 2019 IRT Credit Release Meeting, it was discussed that vegetation plot (VP) 5 did not meet criteria in MY3. During baseline monitoring, VP5 was inadvertently established in an area of low elevation within the floodplain that consistently receives preferential flow from the surrounding topography; thereby holding approximately 0.5-1 foot of water throughout most of the year, inhibiting the establishment of woody vegetation. Upon direction from the IRT and DMS, Wildlands continued collecting plot data within VP5, but also set up a mobile vegetation plot in a random area adjacent to VP5. VP5 did meet success criteria in MY5 with 364 stems per acre, because planted stems that were missing in MY3 were located and measured in MY5. In addition, the mobile VP5 also met success criteria with 550 stems per acre and an average stem height of 7.4 feet within the mobile plot. Refer to Appendix 3 for vegetation plot data. 1.2.4 Wetland Assessment An on -site reference gage is used to compare the hydrologic response of the restored wetland areas on the Site. Precipitation data is referenced from a local USGS gage station. Pressure transducers in each groundwater gage (GWG) are linked to a barotroll logger on the site that records barometric pressure data used in the calculations of the groundwater level within each gage. In December 2018 a soil probe and an additional groundwater gage were installed at the Site. The soil probe was installed at least twelve (12) inches below the ground next to GWG1. In MY5, 14 of 15 groundwater gages met success criteria defined by a free groundwater surface within 12 inches of the ground surface for eighteen (18) consecutive days (8.1 percent) of the growing season for Lincoln County (March 28 through November 5). The measured cumulative hydroperiod for the monitoring gages on the Site ranged from 6.7% to 100% of the growing season. GWG1 met in MY4 but Owl's Den Mitigation Site Monitoring Year 5 Annual Report— FINAL 1-3 did not meet this year in MY5 (GWG1 had 15 days meeting or 6.7%). GWG8 malfunctioned at the beginning of the growing season, but was replaced in April and still met success criteria for 24.7% of the growing season. GWG6, GWG7, and GWG13 malfunctioned prior to the Q3 gage download in July but had all met criteria for 47.4% of the growing season prior to the malfunction. Overall, 2020 was a very wet year compared to the 30-70 percentile graph for rainfall in 2019 in Lincolnton, NC. With the exception of GWG1, all 14 gages that met this year are expected to continue meeting success criteria in subsequent monitoring years. All three groundwater gages that stopped recording data this year will be replaced before the MY6 growing season. Refer to Appendix 2 for the groundwater gage locations and Appendix 5 for groundwater hydrology data and plots. 1.2.5 Areas of Concern/Adaptive Management Plan Stream areas of concern are minimal. Floodplain deposition has continued at the downstream extent of HC1 Reach 2. However, stream stability and conveyance have not been affected and the channel has maintained a stable pool -riffle sequence. Three beaver dams were removed from the Site removed by USDA/APHIS on December 11, 2019. Wildlands walked the Site on January 7, 2020 and no dam was present on the Site. However, during the time of survey in Q1 2020, a beaver dam was mapped on HC1 directly above the easement crossing as well as another just below HC1 R1. The floodplain inundation from the dam on HC1 R1 is present in the XS1 and XS2 photos taken in March. However, the dam was removed after the cross -sectional survey was completed in March 2020. USDA/APHIS have monitored the Site throughout the year. The most recent trip to the Site by USDA/APHIS was September 28, 2020. There is a corresponding drop in water level on both stream hydrographs associated with removal. The stream channel appeared stable from visual assessment after the dam removal. No monitoring features or data were affected except for the floodplain inundation, which was recorded for HC1 R2 and HC2, as shown on the stream gage plot in Appendix 5. During a Site visit on November 6, 2020, the dam above the crossing had been re-established as well as another small dam below the crossing. Photos of both are available in the Area of Concern photos in Appendix 2. In early December 2020, both dams were removed from the Site. Wildlands is currently monitoring for continued beaver activity and if noted will address in the first quarter of MY6. The vegetation areas of concern continue to be monitored and treated in MY5. Invasive species that have undergone treatment include Japanese honeysuckle (Lonicera japonica) and Chinese and Japanese privet (Ligustrum sinsense and japonicum). The areas previously identified as morning glory (family Convolvulaceae), have been updated in MY5 to climbing hempvine (Mikania scadens), which is native to North Carolina. Vine strangulation by the climbing hempvine is occurring in vegetation plot 1, but the plot is still meeting criteria although the trees have reduced height and vigor relative to the rest of the vegetation plots. Treatment of the climbing hempvine is scheduled to occur before the MY6 growing season. In total, invasive species are affecting approximately 2% of the site. As needed, herbicide applications will be applied in accordance with state regulations to control these invasive species in future monitoring years. Supplemental planting in the area surrounding VP11 was completed in March of 2019. The supplemental planting area has been visually monitored throughout the MY5 growing season and the new stems are responding well, both in and surrounding vegetation plot 11. In MY5, low stem density areas (0.1 Ac), previously noted in MY4, continue to persist with low stem density. This area will continue to be visually assessed in subsequent monitoring years to see if volunteer species become established or if additional planting is needed. Refer to Appendix 2 for the vegetation condition assessment table and Current Condition Plan View (CCPV) maps. Owl's Den Mitigation Site Monitoring Year 5 Annual Report— FINAL 1-4 1.3 Monitoring Year 5 Summary Visual assessments indicate that all streams above the HC1-HC2 confluence are geomorphically stable and functioning as designed. Beaver dams have been identified and removed on the Site above the HC1 R2 easement crossing. Multiple bankfull events have been documented within the restored stream reaches and the Site met the final (MY7) stream hydrology success criteria during MY2. The vegetation on the Site is on track to meet the MY7 success criteria. The majority of groundwater monitoring gages (14 of 15) met the success criteria for MY5. Invasive vegetation will continue to be monitored and treated as necessary to support the establishment of native vegetation. 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 reports can be found in the Mitigation Plan documents available on DMS's website. Owl's Den Mitigation Site Monitoring Year 5 Annual Report— FINAL 1-5 Section 2: METHODOLOGY All Integrated Current Condition Mapping was recorded using a Trimble handheld GPS with sub -meter accuracy and processed using Pathfinder and ArcGIS. Crest gages were installed in surveyed riffle cross - sections and monitored quarterly. Hydrologic monitoring instrument installation and monitoring methods are in accordance with the United States Army Corps of Engineers (USACE, 2003) standards. Vegetation monitoring protocols followed the Carolina Vegetation Survey-EEP Level 2 Protocol (Lee et al., 2008). Owl's Den Mitigation Site Monitoring Year 5 Annual Report— FINAL 2-1 Section 3: REFERENCES Lee, M.T., Peet, R.K., S.D., Wentworth, T.R. 2008. CVS-EEP Protocol for Recording Vegetation Version 4.2. Retrieved from http://cvs.bio.unc.edu/protocol/cvs-eep-protocol-v4.2-lev1-5.pdf. North Carolina Division of Mitigation Services (DIMS), 2007. Catawba River Basin Restoration Priorities. http://nceep.net/services/restplans/RBRPCatawba2007.pdf North Carolina Division of Mitigation Services (DIMS), 2010. Indian and Howards Creek Local Watershed Plan. www.nceep.net/ervices/lwps/Indian Howards Creek/INDIAN HOWARD CREEKS.html North Carolina Division of Mitigation Services (DIMS) and Interagency Review Team (IRT) Technical Workgroup, 2018. Standard Measurement of the BHR Monitoring Parameter. Raleigh, NC. Rosgen, D. L. 1994. A classification of natural rivers. Catena 22:169-199. Rosgen, D.L. 1996. Applied River Morphology. Pagosa Springs, CO: Wildland Hydrology Books. United States Army Corps of Engineers. 2003. Stream Mitigation Guidelines. USACE, NCDENR-DWQ, USEPA, NCWRC. United States Army Corps of Engineers. Email 2018. Standard Measurement of the BHR Monitoring Parameter. United States Department of Agriculture. Lincolnton, NC Weather Station NC4996. http://www.wcc.nres.usda.gov/climate/navigate wets.html United States Geological Survey. 1998. North Carolina Geology. http://www.geology.enr.state.nc.us/usgs/carolina.htm Wildlands Engineering, Inc (2014). Owl's Den Mitigation Site Mitigation Plan. NCEEP, Raleigh, NC. Owl's Den Mitigation Site Monitoring Year 5 Annual Report— FINAL 3-1 APPENDIX 1. General Figures and Tables :reek ' ,� Project Location s 03050102040010 T'«., 030501020400200 Greg Hydrologic Unit Code (14) ot% DMS Targeted Local Watershed s � d ¢ �® s '�� ►.. ►Fr Rio,: Creep Ca per � 1 ►' 03050102030020, Church ftd wards C y rra 1 - }io retrk 1 03050102040040 '� ► 03050102040030 32f` a + sr � - _ t o ♦ 'a . ♦ � Io �. Walker gian�►'. `f 1 ► �a I '• Rock �! 27 i + 1 Int❑ r � A A i ► ► 1 t..awrl The subject project site is an environmental restoration site of the Department of 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 public 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 outside of these previously sanctioned roles and activities requires prior coordination with DMS. �Q§ is �a m M �3 to COunfry C�rJ4 R 1 ry 1a- Move Chu llnl �' iCtr7 f 4 s"ri 03050102060010'%r �l Directons to Site: From Charlotte, NC, take US-85 South approximately 18 miles to US-321 in Gastonia, NC. Take exit 17 for US-321 North and continue approximately 14 miles. Take exit 24 for NC 27 North / NC 150 toward Lincolnton. Continue onto Main Street in downtown Lincolnton, which will go through a roundabout at the Lincoln County Civil Court. Continue on US 27 N/ Main Street by taking the 3rd exit on the roundabout. Main Street becomes Riverside Drive. In approximately 3 miles, turn right onto Rock Dam Road at St. Dorothy's Catholic Church and Kid's Dome. After 0.6 miles, turn right onto Owls Den Road. The entrance to the Owl's Den Farm is on the left in approximately 2 miles. Figure 1 Project Vicinity Map Owl's Den Mitigation Site 0 0.5 1 Miles DMS Project No. 95808 W I L D L A N D 5 nk� Monitoring Year 5- 2020 F.-P Nr-I i r i Lincoln County, NC - - Conservation Easement Stream Restoration Non -Project Streams Wetland Re-establishment - Wetland Rehabilitation ® Internal Culvert Crossing Figure 2 Project Component/Asset Map Owl's Den Mitigation Site 0 100 200 Feet DMS Project No. 95808 W I L D L A N D 5 nk� I I Monitoring Year 5- 2020 ENGINEFRING Lincoln County, NC •Y�, tip. `1 � ,' � , � � �� 4 •_'•y����ti �'�, WILDLANDS ENGINEERING A • Y a` a6kA -•1\['�' 1 Beaver Dam Removed December 2020 5 VP fs I ♦, Beaver Dam Removed March 2020 Xsq 10 Wetland �, \xq 15140.40.11** 16 �. �.� 00 .. s y�I still .I. .:f-.-•-usar......r,.....-^.:rr_..._.._.. .cai _uu:s�.ilik, - �;..�.... Beaver Dam Removed December 2020 I• Conservation Easement Wetland Re-establishment = Wetland Rehabilitation ® Internal Culvert Crossing Stream Restoration Non Project Streams ----- Bankfull Structure w Cross -Section (XS) OReach Break Reference Gage Stream Gage (SG) Barotroll Soil Temperature Probe Groundwater Gages (GWGs)- MY5 Criteria Not Met Criteria Met Beaver Dam Vegetation Plots Meeting Success Critieria MY5 ® Supplemental Planting Area March 2019 Vegetation Problem Areas- MY5 Climbing Hempvine Japanese Honeysuckle Pb Chinese Privet r Low Stem Density 1- -. e•l, I. 1 Figure 3.0 Integrated Current Condition Plan View (Key) Owl's Den Mitigation Site 0 125 250 Feet DMS Project i i i I Monitoring Yearr 5 5- 2020 2020 Lincoln County, NC Figure 3.1 Integrated Current Condition Plan View (Sheet 1 of 3) Owl's Den Mitigation Site DMS Project W I L D L A N D 5 ' 0 25 50 Feet r 5 2020 FNGINFCRING I i i i I Monitoring Year 5- 020 Lincoln County, NC Beaver Dam Removed March 2020 0 +s9 c�a - 5 MVP5 • Wetland G . 17 104'`90 13d q ,♦%.�- 1 ---F8 - • x '�� ",✓ Cp♦ = t W WiLDLANDS nk� ENGkNFFtRINC� 0 25 50 Feet I I I I;. GVVG8 GWG10 :• L— Conservation Easement O Reach Break LVegetation Plots Meeting Success Criteria MY5 - Wetland Re-establishment Photo Point ® Supplemental Planting Area March 2019 - Wetland Rehabilitation Reference Gage Vegetation Problem Areas- MY5 Stream Restoration + Stream Gage (SG) Climbing Hempvine ` ----- Bankfull Groundwater Gages (GWGs)- MY5 Japanese Honeysuckle Structure ♦ Criteria Not Met Chinese Privet ♦� Cross -Section (XS) Criteria Met Low Stem Density ♦` Beaver Dam ` Figure 3.2 Integrated Current Condition Plan View (Sheet 2 of 3) Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Lincoln County, NC J3 1f 117 ~ Beaver Dam Removed ` r . December 2020 .0 '% fib_- - . � - ♦ . �` 3 Beaver Dam Removed December 2020 mom, 13 ♦�♦ % Q XS 6 �•� ,`% 12 ./ • % � 1 Conservation Easement Q Reach Break Vegetation Plots Meeting Criteria MY5 Wetland Re-establishment Photo Point ® Supplemental Planting Area March 2019 Wetland Rehabilitation + Stream Gage (SG) Vegetation Problem Areas- MY5 %� �/ � Internal Culvert Crossing + Barotroll Climbing Hempvine %/ Groundwater Gages GWGs MY5 Japanese Honeysuckle i Stream Restoration g ( ) i' 11 ------- Bankfull T Criteria Not Met Chinese Privet Structure Criteria met Low Stem Density �. Cross -Section (XS) Beaver Dam W WILDLANDS rk� FNGI N E E RING 0 25 50 Feet I I I Figure 3.3 Integrated Current Condition Plan View (Sheet 3 of 3) Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Lincoln County, NC Table 1. Project Components and Mitigation Credits Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Stream Riparian Wetland Non -Riparian Wetland Buffer Nitrogen Nutrient Phosphorous Nutrient Offset Offset Type R RE R RE R RE Totals 2,453.000 N/A 8.938 N/A N/A N/A N/A N/A N/A As -Built Stationing Existing Footage/ t Credits' Reach ID t Approach Restoration or Restoration Equivalent Restoration Footage /Acreage Mitigation Ratio / Location Acreage (SMU / WMU) STREAMS HCl Reach 1 99+94 - 108+09 609 P1 Restoration 815 1:1 815.000 108+09 - 115+35 P1 Restoration 726 1:1 726.000 HC1 Reach 2 994 115+65 - 117+79 Pi Restoration 214 1:1 214.000 HC2 200+00 - 206+98 1 444 Pi Restoration 698 1:1 698.000 WETLANDS Significant Wetland N/A 0.44 improvement to Rehabilitation 0.44 1.3:1 0.338 wetland functions Significant Wetland N/A 0.13 improvement to Rehabilitation 0.13 1.3:1 0.100 wetland functions Significant Wetland N/A 1.03 improvement to Rehabilitation 1.03 1.3:1 0.792 wetland functions Significant Wetland N/A 0.81 improvement to Rehabilitation 0.81 1.3:1 0.623 wetland functions Significant Wetland N/A 0.13 improvement to Rehabilitation 0.13 1.3:1 0.100 wetland functions Significant Wetland N/A 0.13 improvement to Rehabilitation 0.13 1.3:1 0.100 wetland functions Significant Wetland N/A 0.15 improvement to Rehabilitation 0.15 1.3:1 0.115 wetland functions Planting, Wetland Re -Establishment Area N/A n/a hydrologic Re -Establishment 6.77 1:1 6.770 improvement Restoration Level Stream (LF) Riparian Wetland (acres) Non -Riparian Wetland (acres) Buffer (square feet) Upland (acres) Riverine Non-Riverine Restoration 2,453 - Enhancement - Enhancementl - Enhancement II - Wetland Re -Establishment 6.77 - Wetland Rehabilitation - 2.82 - The 301inear feet associated with the stream crossing on HC1 Reach 2 were excluded from the computations. 'Stream Mitigation Credits were adjusted in My2 to reflect credits proposed in the mitigation plan using centerline alignment. Wetland Re-Establilishment credits were revised during the as -built as a result of an eaasement adjustment after mitigation plan was approved. Table 2. Project Activity and Reporting History Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Activity or Report Mitigation Plan Data Collection Comple7ellompletion July 2013 or Scheduled Delivery April 2014 Final Design - Construction Plans March 2015 April 2015 Construction May 2015 - July 2015 July 2015 Temporary S&E mix applied to entire project area' May 2015 - July 2015 July 2015 Permanent seed mix applied to reach/segments June 2015 July 2015 Bare root and live stake plantings for reach/segments January 2016 January 2016 Baseline Monitoring Document (Year 0) Stream Survey June 2015 February 2016 Vegetation Survey January 2016 Year 1 Monitoring Stream Survey April 2016 November 2016 Vegetation Survey September 2016 Year 2 Monitoring Stream Survey March 2017 December 2017 Vegetation Survey July 2017 Year 3 Monitoring Stream Survey April 2018 December 2018 Vegetation Survey September 2018 Year 4 Monitoring Supplemental Planting March 2019 December 2019 Stream Survey N/A Vegetation Survey N/A Beaver Removal N/A December 2019 Year 5 Monitoring Stream Survey March 2020 December 2020 Vegetation Survey July 2020 Invasive Species Treatment Ongoing Beaver Removal Ongoing Year 6 Monitoring Stream Survey 2021 December 2021 Vegetation Survey 2021 Year 7 Monitoring Stream Survey 2022 December 2022 Vegetation Survey 2022 'Seed and mulch is added as each section of construction is completed. Table 3. Project Contact Table Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Wildlands Engineering, Inc. Designer 1430 South Mint Street, Suite 104 Emily Reinicker, PE Charlotte, NC 28203 704.332.7754 Land Mechanic Designs, Inc. Construction Contractor 126 Circle G Lane Willow Spring, NC 27592 Bruton Natural Systems, Inc Planting Contractor P.O. Box 1197 Fremont, NC 27830 Land Mechanic Designs, Inc. Seeding Contractor 126 Circle G Lane Willow Spring, NC 27592 Seed Mix Sources Green Resource, LLC Nursery Stock Suppliers Bare Roots Bruton Natural Systems, Inc Live Stakes Monitoring Performers Wildlands Engineering, Inc. Kristi Suggs Monitoring, POC 704.332.7754, ext. 110 Table 4. Project Information and Attributes Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 EM... Project Information Owl's Den Mitigation Site Project Name County Lincoln County Project Area (acres) 12.87 Project Coordinates (latitude and longitude) 35°29'33.22" N, 81" 18'45.95" W Project Physiographic Province Watershed Summary Information Inner Piedmont Belt of the Piedmont Physiographic Province River Basin Catawba USGS Hydrologic Unit 8-digit 03050102 USGS Hydrologic Unit 14-digit 03050102040040 D W R Sub -basin 03-08-35 Project Drainage Area (acres) 152 Project Drainage Area Percentage of Impervious Area <1% CGIA Land Use Classification 93%—Agriculture/Managed Herbaceous; 7%— Forested/Scrubland Parameters HC1 Reach 1 HC1 Reach 2 HC2 Length of reach (linear feet) - Post -Restoration 815 940 698 Drainage area (acres) 62 152 27 NCDWR stream identification score 31.5 37.5 31.5 NCDWR Water Quality Classification C Morphological Desription (stream type) P P P Evolutionary trend (Simon's Model) - Pre- Restoration IV IV IV Underlying mapped soils Chewacla Loam, Helena sandy loam, Riverview loam, Worsham fine sandy loam Drainage class --- Soil hydric status --- Slope 0.0061 1 0.0075 1 0.0059 FEMA classification AE* Native vegetation community Piedmont Bottomland Forest Percent composition exotic invasive vegetation -Post-Restoration 0% Regulation Applicable? Resolved? Supporting Documentation Waters of the United States - Section 404 X X USACE Nationwide Permit No.27 (Action ID# SAW-2013-00717) and DWQ401 Water Quality Certification No. 3885. Waters of the United States - Section 401 X X Division of Land Quality (Dam Safety) N/A N/A N/A Endangered Species Act X X Owl's Den Mitigation Plan; Wildlands determined "no effect" on Lincoln County listed endangered species. May 18, 2015 email correspondence from USFWS indicating no effect on the northern long-eared bat. Historic Preservation Act X X No historic resources were found to be impacted (letter from SHPO dated 4/30/2013). Coastal Zone Management Act (CZMA)/Coastal Area Management Act (CAMA) N/A N/A N/A EEMA Floodplain Compliance X X Floodplain development permit issued by Lincoln County. Essential Fisheries Habitat Nc N/A N/A 'The project site reaches do not have regulated floodplain mapping, but are located within the Howards Creek floodplain. APPENDIX 2. Visual Assessment Data Table Sa. Visual Stream Morphology Stability Assessment Table Owl's Den Mitigation Site DIMS Project No. 95808 Monitoring Year 5- 2020 HC1 Reach 1 (820 LF) 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 Numberwith Stabilizing Woody Vegetation Footagewith Stabilizing Woody Vegetation Adjust%for Stabilizing Woody Vegetation 1. Vertical Stability Aggradation 0 0 100% (Shallow and Run units) Degradation 0 0 100% 2. Shallow Condition Texture/Substrate 17 17 100% 1. Bed 3. Meander Pool Depth Sufficient 16 16 100% Condition Length Appropriate 16 16 100% 4. Thalweg Position Thalweg centering at upstream of meander bend Run 16 16 100% Thalweg centering at downstream of meander bend Glide 16 16 100% Bank lacking vegetative cover resulting 1. Scoured/Eroded simplyfrom poorgrowth and/or scour 0 0 100% n/a n/a n/a and erosion. Banks undercut/overhanging to the extent that mass wasting appears likely. 2.Bank 2. Undercut Does NOT include undercuts that are 0 0 100% n/a n/a n/a modest, appear sustainable and are providing habitat. 3. Mass Wasting Bank slumping, calving, or collapse 0 0 100% n/a n/a n/a Totals 0 0 100% n/a n/a n/a 1. Overall Integrity Structures physically intact with no dislodged boulders or logs. 9 9 100% 2. Grade Control Grade control structures exhibiting maintenance of grade across the sill. 5 5 300% 3. Engineered Structures' 2a. Piping Structures lacking any substantial flow underneath sills or arms. 9 9 300% 3. Bank Protection Bank erosion within the structures extent of influence does not exceed 15%. 4 4 100% Pool forming structures maintaining 4. Habitat —Max Pool Depth : Bankfull Depth>_ 1.6 Rootwads/logs providing some cover at 1 1 300% baseflow. 'Excludes constructed shallows since they are evaluated in channel category. TableSb. Visual Stream Morphology Stability Assessment Table Owl's Den Mitigation Site DIMS Project No. 95808 Monitoring Year 5 - 2020 HC1 Reach 2 (940 LF) 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 Numberwith Stabilizing Woody Vegetation Footagewith Stabilizing Woody Vegetation Adjust%for Stabilizing Woody Vegetation 1. Vertical Stability Aggradation 0 0 100% (Shallow and Run units) Degradation 0 0 100% 2. Shallow Condition Texture/Substrate 14 14 100% 1. Bed 3. Meander Pool Depth Sufficient 15 15 100% Condition Length Appropriate 15 15 100% 4. Thalweg Position Thalweg centering at upstream of meander bend Run 15 15 100% Thalweg centering at downstream of meander bend Glide 15 15 100% Bank lacking vegetative cover resulting 1. Scoured/Eroded simplyfrom poorgrowth and/or scour 0 0 100% n/a n/a n/a and erosion. Banks undercut/overhanging to the extent that mass wasting appears likely. 2.Bank 2. Undercut Does NOT include undercuts that are 0 0 100% n/a n/a n/a modest, appear sustainable and are providing habitat. 3. Mass Wasting Bank slumping, calving, or collapse 0 0 100% n/a n/a n/a Totals 0 0 100% n/a n/a n/a 1. Overall Integrity Structures physically intact with no dislodged boulders or logs. 11 11 100% 2. Grade Control Grade control structures exhibiting maintenance ofgrade acrossthe sill. 5 5 300% 3. Engineered Structures' 2a. Piping Structures lacking any substantial flow underneath sills or arms. 5 5 300% 3. Bank Protection Bank erosion within the structures extent of influence does not exceed 15%. 6 6 100% Pool forming structures maintaining 4. Habitat —Max Pool Depth : Bankfull Depth>_ 1.6 Rootwads/logs providing some cover at 1 1 300% baseflow. 'Excludes constructed shallows since they are evaluated in channel category. Table Sc. Visual Stream Morphology Stability Assessment Table Owl's Den Mitigation Site DIMS Project No. 95808 Monitoring Year 5- 2020 HC2 (708 LF) 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 Numberwith Stabilizing Woody Vegetation Footagewith Stabilizing Woody Vegetation Adjust%for Stabilizing Woody Vegetation 1. Vertical Stability Aggradation 0 0 100% (Shallow and Run units) Degradation 0 0 100% 2. Shallow Condition Texture/Substrate 17 17 100% 1. Bed 3. Meander Pool Depth Sufficient 16 16 100% Condition Length Appropriate 16 16 100% 4. Thalweg Position Thalweg centering at upstream of meander bend Run 16 16 100% Thalweg centering at downstream of meander bend Glide 16 16 100% Bank lacking vegetative cover resulting 1. Scoured/Eroded simplyfrom poorgrowth and/or scour 0 0 100% n/a n/a n/a and erosion. Banks undercut/overhanging to the extent that mass wasting appears likely. 2.Bank 2. Undercut Does NOT include undercuts that are 0 0 100% n/a n/a n/a modest, appear sustainable and are providing habitat. 3. Mass Wasting Bank slumping, calving, or collapse 0 0 100% n/a n/a n/a Totals 0 0 100% n/a n/a n/a 1. Overall Integrity Structures physically intact with no dislodged boulders or logs. 13 13 100% 2. Grade Control Grade control structures exhibiting maintenance ofgrade acrossthe sill. B B 300% 3. Engineered Structures' 2a. Piping Structures lacking any substantial flow underneath sills or arms. B B 300% 3. Bank Protection Bank erosion within the structures extent of influence does not exceed 15%. 5 5 100% Pool forming structures maintaining 4. Habitat —Max Pool Depth : Bankfull Depth>_ 1.6 Rootwads/logs providing some cover at 2 2 100% baseflow. 'Excludes constructed shallows since they are evaluated in channel category. Table 6. Vegetation Condition Assessment Table Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Planted Acreage 13 Mapping Number of Combined % of Planted Vegetation Category Definitions Threshold Polygons Acreage Acreage (Ac) Bare Areas Very limited cover of both woody and herbaceous material. 0.1 0 0.0 0.0% Woody stem densities clearly below target levels based on MY3, 4, or 5 stem count Low Stem Density Areas 0.1 1 0.1 o 0.8/ criteria. Total 1 0.1 0.8% Areas with woody stems of a size class that are obviously small given the monitoring Areas of Poor Growth Rates or Vigor 0.25 Ac 0 0 o 0/ year. Cumulative Total 1 1 1 0.1 1 0.8% Easement Acreage 35 Vegetation Category Definitions Mapping Threshold (SF) Number of Polygons Combined Acreage % of Easement Acreage Invasive Areas of Concern Areas of points (if too small to render as polygons at map scale). 1,000 7 0.71 2.0% Easement Encroachment Areas Areas of points (if too small to render as polygons at map scale). none 0 0 0% Stream Photographs I Photo Point 1—HC1Reach lview upstream (mAo2020) 1 Photo Point 1—HC1Reach lview downstream (mAo2o $ I I Photo Point 2— HCIRm+ lview upstream (o A0/2 2) 1 Photo Point 2— HCIRe+ lview downstream @32 GO q 1 I Photo Point a—HC1Reach lview upstream (o A0/2 2) 1 Photo Point a—HC1Reach 1view downstream (o A0/202$ 1 1. r� K� s i [r a 'C TW 4-3 1� Photo Point 4 — HC1 Reach 1 view upstream (03/20/2020) Photo Point 4 — HC1 Reach 1 view downstream (03/20/2020) yy y v�. - + � y z�IS•xe`�IY� r k Photo Point 5 — HC1 Reach 1 & HC2 view upstream (03/20/2020) Photo Point 5 — HC2 view upstream (03/20/2020) Tq Photo Point 5 — HC1 Reach 1 view downstream (03/20/2020) Photo Point 6 — HC1 Reach 2 view upstream (03/20/2020) 1 Photo Point 6 — HC1 Reach 2 view downstream (03/20/2020) 1 Photo Point 7 — HC1 Reach 2 view upstream (03/20/2020) 1 Photo Point 7 — HC1 Reach 2 view downstream (03/20/2020) 1 Photo Point 8 — HC1 Reach 2 view upstream (03/20/2020) 1 Photo Point 8 — HC1 Reach 2 view downstream (03/20/2020) 1 Photo Point 9 — HC1 Reach 2 view upstream (03/20/2020) 1 Photo Point 9 — HC1 Reach 2 view downstream (03/20/2020) 1 Photo Point 10 — HC1 Reach 2 view upstream (03/20/2020) 1 Photo Point 10 — HC1 Reach 2 view downstream (03/20/2020) 1 Photo Point 11— HC2 view upstream (03/20/2020) 1 Photo Point 11— HC2 view downstream (03/20/2020) 1 Photo Point 12 — HC2 view upstream (03/20/2020) 1 Photo Point 12 — HC2 view downstream (03/20/2020) 1 Photo Point 13 — HC2 view upstream (03/20/2020) 1 Photo Point 13 — HC2 view downstream (03/20/2020) 1 pf�fhyl•Y Photo Point 14 — HC2 view upstream (03/20/2020) 1 Photo Point 14 — HC2 view downstream (03/20/2020) 1 Wetland Photographs �k r y - iJ , a y K 1 ` • `5 A WO i a y' f 1 I ^5,12 7. ", . �a�j +���Jf �31 lusi`ar�r bsr i t�.rP' �°p "•;�1 , ri�" R 4 Al, Photo Point 17 — looking north (03/20/2020) • a 1 I r i •t N N� t 'y _ Photo Point 18 — looking northwest (03/20/2020) Photo Point 18 — looking southwest (03/20/2020) Photo Point 19 — looking northeast (03/20/2020) 1 Photo Point 19 — looking southeast (03/20/2020) 1 Photo Point 20 — looking northwest (03/20/2020) 1Photo Point 20 — looking southeast (03/20/2020) I Area of Concern Photographs Beaver Dam above Culvert (7/2/2020) 1 Re -built Beaver Dam above Culvert (11/5/2020) 1 Re -built Beaver Dam below Culvert at XS7 (11/5/2020) 1 Mobile Vegetation Plot adjacent to VP5 (7/2020) 1 APPENDIX 3. Vegetation Plot Data Table 7. Vegetation Plot Criteria Attainment Table Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Plot Success Criteria Met (Y/N) Tract Mean 1 Y 100% 2 Y 3 Y 4 Y 5 Y 6 Y 7 Y 8 Y 9 Y 10 Y 11 Y 12 Y 13 Y Table 8. CVS Vegetation Tables - Metadata Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Report Prepared By Jeffrey Turner Date Prepared 9/21/2020 13:23 Database Name Owls Den MY3 cvs-eep-entrytool-v2.3.1.mdb Database Location Q:\ActiveProjects\005-02140 Owls Den\Monitoring\Monitoring Year 5 (2020)\Vegetation Assessment Computer Name JEFF-PC File Size 61108224 DESCRIPTION OF WORKSHEETS IN THIS DOCUMENT------------ Metadata Description of database file, the report worksheets, and a summary of project(s) and project data. Project Planted Each project is listed with its PLANTED stems per acre, for each year. This excludes live stakes. Project Total Stems 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. Plots List of plots surveyed with location and summary data (live stems, dead stems, missing, etc.). Vigor Frequency distribution of vigor classes for stems for all plots. Vigor by Spp Frequency distribution of vigor classes listed by species. Damage List of most frequent damage classes with number of occurrences and percent oftotal stems impacted by each. Damage by Spp Damage values tallied by type for each species. Damage by Plot Damage values tallied by type for each plot. Planted Stems by Plot and Spp A matrix ofthe count of PLANTED living stems of each species for each plot; dead and missing stems are excluded. ALL Stems by Plot and Spp 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. PROJECT SUMMARY ------------------------------------- Project Code 95808 Project Name Owls Den Mitigation Site Area (sq m) 50585.71 Required Plots (calculated) 13 Sampled Plots 13 Table 9. Planted and Total Stems (Species by Plot with Annual Means) Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Current Plot Data (MY5 2020) Scientific Name Common Name Species Type Vegetation Plot 1 Vegetation Plot 2 Vegetation Plot 3 Vegetation Plot 4 Vegetation Plot 5 Vegetation Plot 6 Vegetation Plot 7 Vegetation Plot 8 Vegetation Plot 9 PnoLS P-all T Pnol-S P-all T Pnol-S P-all T Pnol-S P-all T Pnol-S P-all T Pnol-S P-all T Pnol-S P-all T Pnol-S P-all T Pnol-S P-all T Acernegundo Boxelder Tree 2 Acerrubrum Red maple Tree 1 1 1 1 1 1 2 2 2 18 2 2 2 Alnusserrulata Hazel alder Shrub Betula nigra River birch Tree 1 1 1 1 1 2 2 2 2 4 4 4 1 1 1 3 3 3 3 3 6 4 4 4 Diospyros virginiana Common persimmon Tree 1 1 1 1 1 1 2 2 2 1 1 1 2 2 2 1 1 1 Fraxinus pennsylvanica Green ash Tree 4 4 4 3 3 3 2 2 2 2 2 2 5 5 5 5 5 8 2 2 2 6 6 31 4 4 159 Platanusoccidentalis American sycamore Tree 3 3 3 2 2 3 3 3 4 1 1 1 3 3 3 5 5 5 1 1 2 4 4 4 4 4 4 Quercus michauxii Swamp chestnut oak Tree 3 3 3 1 1 1 1 1 1 1 1 1 Quercus nigra Water oak Tree Quercus phellos Willow oak Tree 2 2 2 2 2 2 4 4 4 1 1 1 Rhus Sumac Shrub Robinia pseudoacacia Black locust Tree 1 Salix nigra IBlack willow Tree 1 4 Sambucuscanadensis lCommon Elderberry Shrub Sambucus nigra JEuropean black elderbi Shrub Stem count 10 10 10 12 12 15 13 13 20 13 13 13 9 9 1 9 12 12 16 8 8 27 15 15 43 15 15 170 Size (ares) 1 1 1 1 1 1 1 1 1 Size (ACRES) 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 Species count 5 5 5 6 6 7 1 7 7 9 1 5 5 5 3 3 3 4 4 5 4 4 5 5 5 5 5 5 5 Stems per ACRE 405 405 486 486 607 1 526 526 809 1 51111111111111111 526 526 1 361111111111111 364 364 486 486 647 324 324 1093 61111111111111111 607 1 1740 607 1 6880 Current Plot Data (MY5 2020) Annual Summaries Species Vegetation Plot 10 Vegetation Plot 11 Vegetation Plot 12 Vegetation Plot 13 MY5 (7/2020) MY3 (9/2018) MY2 (7/2017) MY1 (9/2016) MYO (1/2016) Scientific Name Common Name Type PnoLS P-all T Pnol-S P-all T Pnol-S P-all T Pnol-S P-all T PnoLS P-all T Pnol-S P-all T Pnol-S P-all T Pnol-S P-all T PnoLS P-all T Acernegundo Boxelder Tree 25 27 30 16 Acerrubrum Red maple Tree 1 2 2 2 7 8 8 34 8 8 29 7 7 20 8 8 16 9 9 10 Alnusserrulata Hazel alder Shrub 4 3 Betula nigra River birch Tree 2 2 2 2 2 2 2 2 2 2 2 2 1 27 27 31 25 25 38 27 27 27 27 27 27 33 33 33 Diospyros virginiana Common persimmon Tree 2 2 3 1 1 1 1 1 1 12 12 13 11 11 19 14 14 19 16 16 18 21 21 21 Fraxinus pennsylvanica Green ash Tree 4 4 4 5 5 8 5 5 11 4 4 4 51 51 243 42 42 124 49 49 69 51 51 59 50 50 55 Platanus occidentalis American sycamore Tree 1 1 1 3 3 3 1 1 6 1 1 1 32 32 40 29 29 48 30 30 33 33 33 35 45 45 45 Quercus michauxii Swamp chestnut oak Tree 1 1 1 7 7 7 6 6 6 7 7 7 13 13 13 17 17 17 Quercus nigra Water oak Tree 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Quercus phellos Willow oak Tree 1 1 1 2 2 2 4 4 4 6 6 6 22 22 22 22 22 22 27 27 27 31 31 31 33 33 33 Rhus Sumac Shrub 9 1 Salix nigra black willow Tree 1 Robinia pseudoacacia Black locust Tree 5 1 1 1 sambucuscanadensis Common Elderberry Shrub 4 15 4 2 Sambucus nigra European black elderbi Shrub 25 25 Stem count 11 11 13 14 14 17 14 14 32 14 14 64 160 160 449 144 144 335 162 162 239 180 180 205 208 208 216 Size (ares) 1 1 1 1 13 13 13 13 13 Size (ACRES) 0.02 0.02 0.02 0.02 0.32 0.32 0.32 0.32 0.32 Species cou;iI 6 1 6 1 7 1 5 5 1 5 1 6 1 6 1 7 1 5 1 5 1 7 1 8 1 8 12 8 8 13 8 8 13 8 8 30 7 7 8 Stems per ACRE 445 1 526 1 567 1 567 1 688 1 567 1 567 1 1295 1 567 1 567 1 2590 1 498 1 498 1 1398 1 448 448 1 1043 504 504 744 560 560 638 647 672 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% Volunteers included PnoLS: Number of planted stems excluding live stakes P-All: Number of planted stems including live stakes T: Total stems Mobile Vegetation Plot 5 Scientific Name Common Name Species Type Total Stems Acer negundo Boxelder Tree 1 Acer rubrum Red maple Tree 1 Quercus michauxii Swamp chestnut oak Tree 2 Diospyros virginiana Common persimmon Tree 2 Fraxinus pennsylvanica Green ash Tree 4 Platanus occidentalis American sycamore Tree 1 Stem count 11 Size (ares) 1 Size (ACRES) 0.02 Species count 6 Stems per ACRE 550 Exceeds requirements by 10% Volunteers included APPENDIX 4. Morphological Summary Data and Plots Table 10a. Baseline Stream Data Summary Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Owl's Den-HC1 Reaches 1 and 2 Parameter Gage HC1 Reach 1 HC1 Reach 2 Vile Preserve UT to Lyle Creek UT to Catawba River UT to Lake Wheeler Westbrook Design HC1 Reach 1 HC1 Reach 2 As-Built/Baseline HC1 Reach 1 HC1 Reach 2 Min I Max Min Max Min Max Min Max Min Max Min Max Min I Max Min I Max Min I Max I Min Max Min I Max Dimension and Substrate - Shallow Bankfull Width (ft) N/A 8.9 10.4 5.4 12.7 4.5 6.2 15.2 13.8 10.6 9.7 9.0 13.0 8.9 10.7 11.8 13.9 Floodprone Width (ft) 11 25 15 181 200+ 38+ 53+ N/A' 100+ 23 T 46 31 1 130 200+ 60 200+ Bankfull Mean Depth 0.5 0.8 0.8 1.5 0.9 0.5 1.5 1.6 0.8 0.7 0.8 0.6 0.7 0.8 0.9 Bankfull Max Depth 0.9 1.3 1.0 2.4 1.4 1.4 2.0 2.2 1.1 1.1 1.2 1.2 1.3 1.3 1.6 Bankfull Cross -sectional Area ftz 2.7 7.2 7.9 9.7 4.5 5.3 7.3 20.8 17.4 8.0 6.2 9.8 6.1 10.3 10.5 Width/Depth Ratio 10.9 19.1 3.7 16.6 4.5 7.4 31.7 9.1 6.5 12.0 13.2 17.2 13.0 1 19.0 13.4 18.5 Entrenchment Ratio 1.1 2.8 1.2 16.1 30+ 2.5+ 5.8+ 15.7 2.2+ 2.6 5.1 2.4 10.0 19+ 4.4 17+ Bank Height Ratio 1.9 2.2 1.7 5.1 1.0 1.0 1.0 N/A' 1.0 1.0 1.0 1.0 1.0 D50 (mm) 0.206 Shallow Length (ft) --- --- --- --- --- --- --- 8.2 25.4 7.9 32.5 Shallow Slope (ft/ft) 0.0094 0.0005 0.0053 0.0063 0.0055 1 0.0597 0.0110 1 0.0600 0.0430 N/A' 0.0022 1 0.0130 0.0022 1 0.0130 0.0004 0.0193 0.0023 0.0227 Pool Length (ft) N/A --- --- --- --- --- --- --- 18.8 62.2 21.5 69.9 Pool Max Depth (ft) 1.3 1.3 1.4 1.7 2.9 1.4 1.5 1.0 1.4 1.1 1.5 1.2 2.2 2.0 3.4 Pool Spacing (ft) 83 165 100 215 45 15 28 31 60 42 16 59 14 90 21 130 32 74 36 91 Pool Volume (ft3) Pattern Channel Beltwidth (ft) N/A N/A 19 21 55 26 64 14 20 16 38 23 55 21 45 17 62 Radius of Curvature (ft) N/A N/A 27 50 19 32 31 56 8 34 15 27 16 41 23 59 16 27 22 50 Rc:Bankfull Width (ft/ft) N/A N/A N/A 4.5 8.1 1.3 2.1 2.2 4.1 0.8 3.2 1.5 2.8 1.8 4.5 1.8 4.5 1.5 3.0 1.6 4.2 Meander Length (ft) N/A N/A 29 45 39 44 65 107 40 191 50 38 66 55 95 58 92 82 155 Meander Width Ratio N/A N/A 3.1 4.2 1.3 4.0 6.0 11.0 1.4 1 2.1 1.8 4.2 1.8 4.2 1.9 5.1 1.2 5.3 Substrate, Bed and Transport Parameters Ri%/Ru%/P%/G%/S% SC%/Sa%/G%/C%/B%/Be% d16/d35/d50/d84/d95/d100 N/A 0.0062 / 0.089 / 0.206 / 0.790 / 1.5 / 4.8 0.2/0.3/0.4/0.9/2.0/9.0 -/0. 1/0. 2/0.5/4.0/8. 0 0.3/0.4/1.8/12.8/25/90 d50 : 2.6 d50 : 0.7 N/A N/A Reach Shear Stress (Competenc Ib/ft2 0.11 1 0.18 0.147 0.15 --- --- 0.07 1 0.09 0.13 1 0.15 Max part size (mm) mobilized at bankfull Stream Power (Capacity) W/M21 I I I I I 1 1 1.8 1 2.6 1 1.8 2.6 Additional Reach Parameters Drainage Area (SM) N/A 0.10 0.24 1.09 0.25 1.60 0.40 0.90 0.10 0.24 0.10 0.24 Watershed Impervious Cover Estimate (%) <1% <1% --- --- --- --- --- <1% <1% <1% <1% Rosgen Classification Modified G5c Modified C5 E5 C5 E5 E4 E/C5 C/E C/E C5 C5 Bankfull Velocity (fps) 1.3 1 1.6 1.5 F 1.8 2.5 1.9 3.5 N/Al N/A' 1.4 1.6 1.3 1.3 1 1.4 Bankfull Discharge (cfs) 8 14 12 14 73 N/A3 N/A' 8 14 8 14 Q-NFF regression (2-yr) 35 62 Q-USGS extrapolation (1.2-yr) 4 8 Q-Mannings --- --- Valley Length (ft) --- --- --- --- --- --- --- --- --- 601 797 Channel Thalweg Length (ft) 609 994 --- --- --- --- --- 815 940 820 940 Sinuosity 1.0 1.0 1.1 1.7 1.3 1.6 1.2 1.1 1 1.3 1.1 1 1.3 1.4 1.2 Water Surface Slope ft/ft --- --- --- 0.0020 0.0020 0.0023 0.0031 Bankfull Slope (ft/ft) --- --- --- --- 0.0020 0.0020 0.0021 1 0.0026 0.0026 1 0.0029 SC: Silt/Clay <0.062 mm diameter particles ( --- ): Data was not provided N/A: Not Applicable N/Al: Data not provided in reference reach report (Lowther, 2008) N/AZ: Data not provided in Neu -Con Umbrella Wetland and Stream Mitigation Bank Westbrook Lowgrounds Site Specific Mitigation Plan (Environmental Banc Exchange, 2002) N/A3: Lowther reported a range of possible discharges from 46.8 to 108.9 cfs based on different Mannings'n' estimation techniques (Lowther, 2008) Table 10b. Baseline Stream Data Summary Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year S - 2020 Owl's Den-HC2 Parameter Gage HC2 See Table 10a. HC2 HC2 Min Max Min Max Min Max Dimension and Substrate - Riffle Bankfull Width (ft) N/A 5.4 8.9 See Table 10a. 6.5 6.8 8.8 Floodprone Width (ft) 9 14 35 110 200+ Bankfull Mean Depth 0.4 0.5 0.5 0.3 0.5 Bankfull Max Depth 0.8 0.9 0.8 0.8 1.0 Bankfull Cross -sectional Area(ft') 2.9 3.5 3.3 2.1 3.8 Width/Depth Ratio 10.0 22.3 13.2 16.1 21.5 Entrenchment Ratio 1.6 5.4 1 16.9 23+ 30+ Bank Height Ratio 3.3 1 4.1 1.0 1.0 D50 (mm) 0.047 Profile Shallow Length (ft) N/A See Table 10a. --- 8.5 26.7 Shallow Slope (ft/ft) 0.0046 1 0.0120 0.0053 1 0.0160 0.0044 0.0294 Pool Length (ft) 10.6 48.7 Pool Max Depth (ft) N/A 0.7 1.0 1.0 2.0 Pool Spacing (ft) 90 148 10 65 29 72 Pool Volume(ft') Pattern Channel Beltwidth (ft) N/A N/A See Table 10a. 12 27 16 41 Radius of Curvature (ft) N/A 12 29 11 26 Rc:Bankfull Width (ft/ft) N/A 1.8 4.5 1.3 3.8 Meander Length (ft) N/A 27 48 46 80 Meander Width Ratio N/A 1.8 4.2 1.8 6.0 Substrate, Bed and Transport Parameters Ri%/Ru%/P%/G%/S% N/A See Table 10a. SC%/Sa%/G%/C%/B%/Be% d16/d35/d50/d84/d95/d100 0.002/0.012/0.05/0.26/0.43/5 N/A Reach Shear Stress (Competency) lb/ft' --- --- 0.11 0.15 Max part size (mm) mobilized at bankfull Stream Power (Capacity) W/mz 3.6 3.6 Additional Reach Parameters Drainage Area (SM) N/A 0.04 See Table 10a. 0.04 0.04 Watershed Impervious Cover Estimate (%) <1% <1% <1% Rosgen Classification Modified G6c C/E C5 Bankfull Velocity (fps) 1.4 1 1.7 1.6 1.3 1 2.4 Bankfull Discharge (cfs) 5 5 5 Q-NFF regression (2-yr) 20 Q-USGS extrapolation(1.2-yr) 2 Q-Mannings --- Valley Length (ft) --- --- 574 Channel Thalweg Length (ft) 444 698 708 Sinuosity 1.0 1.1 1.3 1.2 Water Surface Slope (ft/ftz --- 0.0043 0.0098 0.0061 Bankfull Slope (ft/ft) --- 0.0043 0.0098 0.0059 0.0062 SC: Silt/Clay <0.062 mm diameter particles (---): Data was not provided N/A: Not Applicable N/A4: No pool Cross -Section taken on HC2 Table 11. Morphology and Hydraulic Summary (Dimensional Parameters - Cross -Section) Owl's Den Mitigation Site DIMS Project No. 95808 Monitoring Year 5 - 2020 Dimension and Substrate ' ' ' Base MYl MY2 MY3 MY4 MYS MY6 MY7 Base MYl MY2 MY MY4 MYS MY6 MY7 Base MYl MY2 MY3 MY4 MYS MY6 MY7 Base MYl MY2 MY3 MY4 MYS MY6 MY7 Bankfull Elevation (ft) 765.9 765.9 765.9 766.07 766.0 765.9 765.9 765.9 765.9 765.9 765.5 765.5 765.5 765.53 765.51 765.0 765.0 765.0 765.1 765.2 Low Bank Elevation (ft) 765.9 765.9 765.9 765.92 766.0 765.9 765.9 765.9 765.9 766.0 765.5 765.5 765.5 765.51 765.51 765.0 765.0 765.0 765.1 765.0 Bankfull Width (ft) 15.5 13.9 13.4 12.6 10.2 10.7 9.7 10.4 11.4 11.9 16.4 15.4 14.6 15.4 14.2 8.9 8.5 9.4 12.6 8.6 Floodprone Width (ft) --- --- --- --- --- 200+ 200+ 200+ 50.3 53.0 --- --- --- --- --- 200+ 200+ 200+ 79.8 80.7 Bankfull Mean Depth (ft) 0.8 0.7 0.8 0.9 1.0 0.6 0.5 0.6 0.6 0.6 0.9 0.9 1.0 1.0 0.9 0.7 0.6 0.6 0.5 0.5 Bankfull Max Depth (ft) 1.9 1.6 1.7 1.9 1.8 1.2 1.0 1.2 1.3 1.3 2.4 2.3 2.5 2.6 1.3 1.1 1.1 1.3 1.3 Bankfull Cross -Sectional Area (ft) 11.6 9.6 11.1 11.6 10.2 6.1 4.7 6.5 6.6 7.2 14.8 13.7 14.6 14.8 6.1 4.7 5.5 6.3 4.6 Bankfull Width/Depth Ratio 20.6 20.2 16.3 13.8 10.2 19.0 20.0 16.6 19.7 19.5 18.2 17.2 14.7 15.9 M 17.9 15.5 15.8 25.1 16.2 Bankfull Entrenchment Ratio --- --- --- --- --- 19+ 20+ 19+ 4.4+ 4.5 --- --- --- --- 19+ 24+ 21+ 6.3+ 9.4 Bankfull Bank Height Ratio --- --- --- --- --- 1.1 --- --- --- --- 1.0 1.0 1.0 0.9 0.9 Dimension and substrate -Base MYS Cross -Section MY2 MY3 MY4 MYS • MY7 Base Cross-section MY1 r MY2 MY3 MY4 MYS r MY6 MY7 Base MYlt Cross MY2, ,MY3 • MY4 each • • MY6 MY7 Base Cross MY 1t -Section MY2 MY3 MY4 MYS •MY6 MY7 Bankfull Elevation (ft) 763.7 763.7 763.7 763.78 MY4 763.73 763.6 763.6 763.6 763.72 r MY4 763.92 762.4 762.6 762.6 763.06 762.89 762.1 762.3 762.3 763.1 763.41 762.4 762.6 762.6 762.44 762.89 762.1 762.3 762.3 763.11 765.06 14.7 10.5 10.6 8.7 12.8 13.9 12.5 12.8 14.0 11.7 --- --- --- --- --- 61 47 44 73.0 79.6 0.9 1.1 1.1 1.6 0.6 0.8 0.8 0.7 0.8 2.1 2.2 2.4 2.1 2.9 1.2 1.3 1.4 1.4 2.2 4.2 24.3 13.9 12.1 11.1 13.9 8.1 10.5 9.7 9.0r5. 15.6 9.2 10.0 5.5 2a 2 18.5 16.1 18.0 5.7 --- --- --- --- --- 4.4 3.7 3.4 6.8 --- --- --- --- --- 1.0 1.1 1.1 1.7 Base MYl rMY2 MY3 MY4 MYS MY6 MY7 766.6 766.6 766.6 766.59 766.64 766.6 766.6 766.6 766.59 766.59 7.5 7.7 7.7 7.9 9.0 200+ 200+ 200+ 45.3 45.7 0.5 0.4 1 0.4 0.4 0.4 1.0 0.9 0.9 1.1 1.0 3.4 3.1 3.2 3.5 3.4 16.1 19.2 18.8 17.7 24.1 27+ 26+ 26+ 6+ 5.1 1.0 1.0 Low Bank Elevation (ft) 763.7 763.7 763.7 763.73 763.73 763.6 763.6 763.6 763.72 763.84 Bankfull Width (ft) 16.5 16.0 16.5 16.4 15.6 11.8 11.1 11.1 12.6 11.8 Floodprone Width (ft) --- --- --- --- --- 200+ 200+ 200+ 79.9 81.0 Bankfull Mean Depth (ft) 1.5 1.5 1.5 1.5 1.0 0.9 0.8 0.8 0.7 0.7 Bankfull Max Depth (ft) 2.6 1 2.5 1 2.5 2.7 1.9 1.6 1.3 1.4 1.5 1.5 Bankfull Cross -Sectional Area (fte) 24.9 23.5 24.0 24.9 15.0 10.3 8.8 8.4 9.2 8.7 Bankfull Width/Depth Ratio 10.9 10.8 11.4 10.8 16.3 13.4 14.1 14.7 16.2 15.9 Bankfull Entrenchment Ratio --- --- --- --- --- 17+ 18+ 18+ 6+ 6.9 Bankfull Bank Height Ratio Dimension and Substrate''2'aA --- Base --- MYl --- MY2 --- MY3 --- MYS MY6 MY7 1.0 Base 1.0 MYl 10 MY2 10 MY3 0.9 MYS MY6 MY7 Bankfull Elevation (ft) 767.8 767.8 767.8 767.72 12, HC2 MY4 767.78 767.5 767.5 767.5 767.6 HC2 (Shallow) MY4 767.46 Low Bank Elevation (ft) 767.8 767.8 767.8 767.72 767.72 767.5 767.5 767.5 767.54 767.46 Bankfull Width (ft) 6.8 6.1 5.9 4.6 4.0 12.2 11.1 11.3 11.2 8.5 Floodprone Width (ft) 200+ 200+ 200+ 51.1 51.1 --- --- --- --- --- Bankfull Mean Depth (ft) 0.3 0.3 0.3 0.4 0.3 0.6 0.5 1 0.5 0.6 0.5 Bankfull Max Depth (ft) 0.8 1 0.8 1 0.8 0.8 0.7 1.6 1.3 1.4 1.5 1.2 Bankfull Cross -Sectional Area (ft?) 2.1 1.9 1.7 1.9 1.3 7.0 5.9 5.3 7.0 4.1 Bankfull Width/Depth Ratio 21.5 19.9 20.0 10.9 12.4 21.0 20.8 24.1 17.8 17.5 Bankfull Entrenchment Ratio 30+ 33+ 34+ 11+ 12.7 --- --- --- --- --- Bankfull Bank Height Ratio Dimension and Substrate''2'aA 1.0 Base 1.0 MY1 1.0 Cross -Section MY2 1.0 MY3 1.0 (Pool) MY5 MY6 MY7 --- Base --- Cross MY1 --- -Section MY2 --- 13, MY3 --- MYS MY6 M MY7 Bankfull Elevation (ft) 766.7 766.7 766.7 766.78 766.64 765.1 765.1 765.1 765.1 765.18 Low Bank Elevation (ft) 766.7 766.7 766.7 766.74 766.64 765.1 765.1 765.1 765.1 765.12 Bankfull Width (ft) 12.1 12.2 11.5 12.4 9.4 8.8 9.3 9.1 10.6 8.1 Floodprone Width (ft) --- --- --- --- --- 200+ 200+ 200+ 48+ 49.3 Bankfull Mean Depth (ft) 0.7 0.7 0.7 0.7 0.6 0.4 0.3 0.4 0.3 0.5 Bankfull Max Depth (ft) 1.8 1.6 1.5 1.8 1.2 1.0 0.8 0.8 1.0 1.0 Bankfull Cross -Sectional Area (ft?) 8.9 8.5 8.2 8.9 5.2 3.8 2.7 3.3 3.5 3.9 Bankfull Width/Depth Ratio 16.4 17.4 16.0 17.2 17.2 20.7 32.2 25.3 31.9 16.9 Bankfull Entrenchment Ratio --- --- --- --- --- 23+ 21+ 22+ 5+ 6.1 Bankfull Bank Height Ratio --- --- --- --- --- 1.0 1.0 1.0 1.0 1.0 'Prior to MY2, bankfull dimensions were calculated using a fixed bankfull elevation. 'MY3- MY7 Bank Height Ratio was calculated based on the As -built (MYO) cross -sectional area as described in the Standard Measurement ofthe BHR Monitoring Parameter document provided by the NCIRT and NCDMS (9/2018). The remainder of the cro-section dimension parameters were calculated based on the current year's low bank height. 'ER in MY3 is based on the width of the cross-section, in lieu of assuming the width across the floodplain as was done in previous monitoring years. 4MY1 The bankful elevation was adjusted +0.13 fit to componsate for the natural floodplain deposition associated with Howards Creek at the lower extent of HC1 Reach 2. Table 12a. Monitoring Data - Stream Reach Data Summary Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Owl's Den-HC1 Reach 1 Min Max Min Max Min Max Min I Max Min Max Min I Max Min Max Min Max Dimension and Substrate - Shallow1,2,3 Bank -full Width (ft) 8.9 10.7 8.5 9.7 9.4 10.4 11.4 12.6 8.6 11.9 Floodprone Width (ft) 200+ 200+ 200+ 50.3 79.8 53.0 80.7 Bank -full Mean Depth 0.6 0.7 0.5 0.6 0.6 0.5 0.6 0.5 0.6 Bank -full Max Depth 1.2 1 1.3 1.0 1 1.1 1.1 1.2 1.3 1.3 Bank -full Cross -Sectional Area (ft2) 6.1 4.7 5.5 6.5 6.3 6.6 4.6 7.2 Width/Depth Ratio 13.0 1 19.0 15.5 21.0 15.8 16.6 19.7 25.1 16.2 19.5 Entrenchment Ratio 19+ 20+ 24+ 19+ 21+ 4.4+ 6.3+ 4.5 9.4 Bank Height Ratio 1.0 1.0 1.0 0.9 1.0 0.9 1.1 D50 (mm) N/A Profile Shallow Length (ft) 8 25 Shallow Slope (ft/ft) 0.0004 0.0193 Pool Length (ft) 19 62 Pool Max Depth (ft) 1.2 2.2 Pool Spacing (ft) 32 74 Pool Volume (ft) Pattern Channel Beltwidth (ft) 21 45 JI Radius of Curvature (ft) 16 27 Rc:Bankfull Width (ft/ft) 1.5 3.0 Meander Wave Length (ft) 58 92 Meander Width Ratio 1.9 5.1 Additional Reach Parameters Rosgen Classification Channel Thalweg Length (ft) Sinuosity (ft) Water Surface Slope (ft/ft) Bank -full Slope (ft/ft) Ri%/Ru%/P%/G%/S% SC%/Sa%/G%/C%/B%/Be% d16/d35/d50/d84/d95/d100 % of Reach with Eroding Banks C5 820 1.4 0.0023 0.0021 1 0.0026 --- N/A N/A 0% 0% 0% 0% (--- ): Data was not provided 1Prior to MY2, bankfull dimensions were calculated using a fixed bankfull elevation. 2MY3 - MY7 Bank Height Ratio was calculated based on the As -built (MYO) cross -sectional area as described in the Standard Measurement of the BHR Monitoring Parameter document provided by the NCIRT and NCDMS (9/2018). The remainder of the cross-section dimension parameters were calculated based on the current year's bank height. 3ER in MY3 is based on the width of the cross-section, in lieu of assuming the width across the floodplain as was done in previous monitoring years. Table 12b. Monitoring Data - Stream Reach Data Summary Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Owl's Den-HCI Reach 2 Min I Max Min Max Min I Max Min Max Min Max Min Max Min Max Min Max Dimension and Substrate - Riffle1,2,3 Bankfull Width (ft) 11.8 13.9 11.1 12.5 11.1 12.8 4.6 10.9 11.7 11.8 Floodprone Width (ft) 60 200+ 47 200+ 44 200+ 45.3 51.1 79.6 81.0 Bankfull Mean Depth 0.8 0.9 0.8 0.7 0.8 0.3 0.4 0.7 2.1 Bankfull Max Depth 1.3 1.6 1.2 1.4 1.4 1.9 3.5 1.5 4.2 Bankfull Cross -Sectional Area (ft2) 10.3 10.5 7.6 9.7 8.4 9.0 9.2 11.6 8.7 24.3 Width/Depth Ratio 13.4 18.5 14.1 16.1 14.7 18.0 10.9 31.9 5.7 15.9 Entrenchment Ratio 4.4 17+ 3.7 18+ 3.4 18+ 5.0 11+ 6.8 6.9 Bank Height Ratio 1.0 1.0 1.1 1.0 1.1 1.0 0.9 1.7 D50 (mm) N/A Profile Shallow Length (ft) 8 33 Shallow Slope (ft/ft) 0.0023 0.0227 Pool Length (ft) 22 70 Pool Max Depth (ft) 2.0 3.4 Pool Spacing (ft) 36 91 Pool Volume (ft ) Pattern Channel Beltwidth (ft) 17 62 Radius of Curvature (ft) 22 50 Rc:Bankfull Width (ft/ft) 1.6 4.2 Meander Wave Length (ft) 82 155 Meander Width Ratio 1.2 5.3 Additional Reach Parameters IL Rosgen Classification C5 Channel Thalweg Length (ft) 940 Sinuosity (ft) 1.2 Water Surface Slope (ft/ft) 0.0031 Bankfull Slope (ft/ft) 0.0026 1 0.0029 Ri%/Ru%/P%/G%/S% --- SC%/Sa%/G%/C%/B%/Be% N/A d16/d35/d50/d84/d95/d100 N/A % of Reach with Eroding Banks 0% 0% 0% 0% (--- ): Data was not provided 1Prior to MY2, bankfull dimensions were calculated using a fixed bankfull elevation. 2MY3 - MY7 Bank Height Ratio was calculated based on the As -built (MYO) cross -sectional area as described in the Standard Measurement of the BHR Monitoring Parameter document provided by the NCIRT and NCDMS (9/2018). The remainder of the cross-section dimension parameters were calculated based on the current year's bank height. 3ER in MY3 is based on the width of the cross-section, in lieu of assuming the width across the floodplain as was done in previous monitoring years. Table 12c. Monitoring Data - Stream Reach Data Summary Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Owl's Den-HC2 Min Max I Min Max Min Max Min I Max Min Max Min I Max Min Max Min Max Dimension and Substrate - Riffle1,z,3 Bankfull Width (ft) 6.8 8.8 6.1 9.3 5.9 9.1 5.7 11.2 4.0 9.0 Floodprone Width (ft) 200+ 200+ 200+ 200+ 45.7 51.1 Bankfull Mean Depth 0.3 0.5 0.3 0.4 0.3 0.4 0.3 0.4 0.3 0.5 Bankfull Max Depth 0.8 1.0 0.8 0.9 0.8 0.9 0.8 1.1 0.7 1.0 Bankfull Cross -Sectional Area (ft2) 2.1 3.8 1.9 3.1 1.7 3.3 2.1 3.8 1.3 3.9 Width/Depth Ratio 16.1 21.5 19.2 32.2 18.8 25.3 15.5 32.8 12.4 24.1 Entrenchment Ratio 23+ 30+ 21+ 33+ 22+ 34+ 17+ 35+ 5.1 12.7 Bank Height Ratio 1.0 1.0 1.0 1.1 1.0 1.0 D50 (mm) N/A Profile Shallow Length (ft) Shallow Slope (ft/ft) Pool Length (ft) Pool Max Depth (ft) Pool Spacing (ft) Pool Volume (ft3) Pattern 9 27 0.0044 0.0294 11 49 1.0 2.0 29 72 Channel Beltwidth (ft) Radius of Curvature (ft) Rc:Bankfull Width (ft/ft) Meander Wave Length (ft) Meander Width Ratio Additional Reach Parameters 16 11 1.3 46 1.8 41 26 3.8 80 6.0 Rosgen Classification Channel Thalweg Length (ft) C5 708 1 0% 0% 0% Sinuosity (ft) 1.2 Water Surface Slope (ft/ft) 0.0061 Bankfull Slope (ft/ft) 0. 0059 0.0062 Ri%/Ru%/P%/G%/S% --- SC%/Sa%/G%/C%/B%/Be% N/A d16/d35/d50/d84/d95/d100 %of Reach with Eroding Banks N/A 0% (--- ): Data was not provided 'Prior to MY2, bankfull dimensions were calculated using a fixed bankfull elevation. 2MY3 - MY7 Bank Height Ratio was calculated based on the As -built (MYO) cross -sectional area as described in the Standard Measurement of the BHR Monitoring Parameter document profivded by the NCIRT and NCDMS (9/2018). The remainder of the cross-section dimension parameters were calculated based on the current year's bank height. 3ER in MY3 is based on the width of the cross-section, in lieu of assuming the width across the floodplain as was done in previous monitoring years. Cross Section Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Cross Section 1, HC1 Reach 1 101+44 Pool 768 767 L_ 766 - c - 0 765 v w 764 763 10 20 30 40 50 Width (ft) MY1 (4/2016) —MY2 (03/2017) —MY3 (04/2018) —4—MY5 (03/2020) —Bankfull Bankfull Dimensions 10.2 x-section area (ft.sq.) 10.2 width (ft) 1.0 mean depth (ft) 1.8 max depth (ft) 11.0 wetted parimeter (ft) 0.9 hyd radi (ft) 10.2 width -depth ratio Survey Date: 3/2020 Field Crew: Wildlands Engineering View Downstream Cross Section Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Cross Section 2, HC1 Reach 1 101+64 Shallow 768 767 766 0 --- -- ------ -- - -- -- ------ -- - ------ - v w 765 764 5 15 25 35 45 Width (ft) MY1 (4/2016) — MY2 (03/2017) MY3 (04/2018) +MYS (03/2020) Bankfull Floodprone Area — — — MYO Bankfull Area Elevation Bankfull Dimensions 7.2 x-section area (ft.sq.) 11.9 width (ft) 0.6 mean depth (ft) 1.3 max depth (ft) 12.4 wetted parimeter (ft) 0.6 hyd radi (ft) 19.5 width -depth ratio 53.0 W flood prone area (ft) 4.5 entrenchment ratio 1.1 low bank height ratio Survey Date: 3/2020 Field Crew: Wildlands Engineering View Downstream Cross Section Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Cross Section 3, HC1 Reach 1 105+58 Pool 767 766 765 c 0 764 > v w 763 762 25 35 45 55 65 75 Width (ft) MY1 (4/2016) —MY2 (03/2017) —MY3 (04/2018) —4—MY5 (03/2020) —Bankfull Bankfull Dimensions 12.7 x-section area (ft.sq.) 14.2 width (ft) 0.9 mean depth (ft) 2.4 max depth (ft) 15.8 wetted parimeter (ft) 0.8 hyd radi (ft) 15.7 width -depth ratio Survey Date: 3/2020 Field Crew: Wildlands Engineering View Downstream Cross Section Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Cross Section 4, HC1 Reach 1 105+95 Shallow 767 766 -- — — —— — — — —— — -- — — ---- — — � 765 0 v w 764 763 25 35 45 55 65 75 Width (ft) MY1 (4/2016) MY2 (03/2017) MY3 (04/2018) MY5 (03/2020) Bankfull Floodprone Area — — — MYO Bankfull Area Elevation Bankfull Dimensions 4.6 x-section area (ft.sq.) 8.6 width (ft) 0.5 mean depth (ft) 1.3 max depth (ft) 9.3 wetted parimeter (ft) 0.5 hyd radi (ft) 16.2 width -depth ratio 80.7 W flood prone area (ft) 9.4 entrenchment ratio 0.9 low bank height ratio Survey Date: 3/2020 Field Crew: Wildlands Engineering View Downstream Cross Section Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Cross Section 5, HC1 Reach 2 113+11 Pool 766 765 764 763 0 v 762 w 761 760 10 20 30 40 50 60 70 Width (ft) MY1 (4/2016) —MY2 (03/2017) —MY3 (04/2018) —4—MY5 (03/2020) —Bankfull Bankfull Dimensions 15.0 x-section area (ft.sq.) 15.6 width (ft) 1.0 mean depth (ft) 1.9 max depth (ft) 16.5 wetted parimeter (ft) 0.9 hyd radi (ft) 16.3 width -depth ratio Survey Date: 3/2020 Field Crew: Wildlands Engineering View Downstream Cross Section Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Cross Section 6, HC1 Reach 2 113+41 Shallow 766 765 764 — --- -- -- ---------- -- c 0 763 > v w 762 761 20 30 40 50 60 Width (ft) MY1 (4/2016) — MY2 (03/2017) ! MY3 (04/2018) + MY5 (03/2020) Bankfull Floodprone Area — — — MYO Bankfull Area Elevation Bankfull Dimensions 8.7 x-section area (ft.sq.) 11.8 width (ft) 0.7 mean depth (ft) 1.5 max depth (ft) 12.4 wetted parimeter (ft) 0.7 hyd radi (ft) 15.9 width -depth ratio 81.0 W flood prone area (ft) 6.9 entrenchment ratio 0.9 low bank height ratio Survey Date: 3/2020 Field Crew: Wildlands Engineering View Downstream Cross Section Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Cross Section 7, HC1 Reach 2 116+53 Pool 766 765 764 763 $ c ° 762 v u 761 760 759 20 30 40 50 60 70 Width (ft) MY1 (4/2016) —MY2 (03/2017) —MY3 (04/2018) —4—MY5 (03/2020) —Bankfull Bankfull Dimensions 8.1 x-section area (ft.sq.) 12.8 width (ft) 0.6 mean depth (ft) 1.2 max depth (ft) 13.1 wetted parimeter (ft) 0.6 hyd radi (ft) 20.2 width -depth ratio Survey Date: 3/2020 Field Crew: Wildlands Engineering View Downstream Cross Section Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Cross Section 8, HC1 Reach 2 117+28 Shallow 770 768 766 0 764 w 762 760 15 25 35 45 55 65 Width (ft) MY1 (4/2016) MY2 (03/2017) MY3 (04/2018) +MY5 (03/2020) — Bankfull — Floodprone Area — — — MYO Bankfull Area Elevation Bankfull Dimensions 24.3 x-section area (ft.sq.) 11.7 width (ft) 2.1 mean depth (ft) 4.2 max depth (ft) 15.3 wetted parimeter (ft) 1.6 hyd radi (ft) 5.7 width -depth ratio 79.6 W flood prone area (ft) 6.8 entrenchment ratio 1.6 low bank height ratio Survey Date: 3/2020 Field Crew: Wildlands Engineering View Downstream Cross Section Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Cross Section 9, HC2 201+53 Shallow 769 768 ------ - - - -- - -- - c 0 v 767 gi w 766 10 20 30 40 50 Width (ft) MY1 (4/2016) MY2 (03/2017) MY3 (04/2018) MY5 (03/2020) Bankfull Floodprone Area — — — MYO Bankfull Area Elevation Bankfull Dimensions 1.3 x-section area (ft.sq.) 4.0 width (ft) 0.3 mean depth (ft) 0.7 max depth (ft) 4.4 wetted parimeter (ft) 0.3 hyd radi (ft) 12.4 width -depth ratio 51.1 W flood prone area (ft) 12.7 entrenchment ratio 1.0 low bank height ratio Survey Date: 3/2020 Field Crew: Wildlands Engineering View Downstream Cross Section Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Cross Section 10, HC2 201+85 Pool 769 768 � 767 0 v w 766 765 10 20 30 40 50 60 Width (ft) MY1 (4/2016) —MY2 (03/2017) —MY3 (04/2018) —4—MY5 (03/2020) —Bankfull Bankfull Dimensions 4.1 x-section area (ft.sq.) 8.5 width (ft) 0.5 mean depth (ft) 1.2 max depth (ft) 9.0 wetted parimeter (ft) 0.5 hyd radi (ft) 17.5 width -depth ratio Survey Date: 3/2020 Field Crew: Wildlands Engineering View Downstream Cross Section Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Cross Section 11, HC2 204+32 Shallow 768 767 c 0 766 77 v w 765 0 10 20 30 40 Width ft MY1 (4/2016) MY2 (03/2017) MY3 (04/2018) MY5 (03/2020) Bankfull Floodprone Area — — — MYO Bankfull Area Elevation Bankfull Dimensions 3.4 x-section area (ft.sq.) 9.0 width (ft) 0.4 mean depth (ft) 1.0 max depth (ft) 9.5 wetted parimeter (ft) 0.4 hyd radi (ft) 24.1 width -depth ratio 45.7 W flood prone area (ft) 5.1 entrenchment ratio 1.0 low bank height ratio Survey Date: 3/2020 Field Crew: Wildlands Engineering View Downstream Cross Section Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Cross Section 12, HC2 204+54 Pool 768 767 F 766 0 v w 765 764 10 20 30 40 50 Width (ft) MY1 (4/2016) —MY2 (03/2017) —MY3 (04/2018) —4—MY5 (03/2020) —Bankfull Bankfull Dimensions 5.2 x-section area (ft.sq.) 9.4 width (ft) 0.6 mean depth (ft) 1.2 max depth (ft) 10.6 wetted parimeter (ft) 0.5 hyd radi (ft) 17.2 width -depth ratio Survey Date: 3/2020 Field Crew: Wildlands Engineering View Downstream Cross Section Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Cross Section 13, HC2 206+43 Shallow 767 766 765 � 0 60 v w 764 763 10 20 30 40 50 Width (ft) MY1 (4/2016) MY2 (03/2017) MY3 (04/2018) MY5 (03/2020) Bankfull Floodprone Area — — — MYO Bankfull Area Elevation Bankfull Dimensions 3.9 x-section area (ft.sq.) 8.1 width (ft) 0.5 mean depth (ft) 1.0 max depth (ft) 8.4 wetted parimeter (ft) 0.5 hyd radi (ft) 16.9 width -depth ratio 49.3 W flood prone area (ft) 6.1 entrenchment ratio 1.0 low bank height ratio Survey Date: 3/2020 Field Crew: Wildlands Engineering View Downstream APPENDIX 5. Hydrology Summary Data and Plots Table 13. Verification of Bankfull Events Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Reach HC1 Monitoring Year MY1 D. • of Occurrence 1/16/2016 Stream Gage 2/3/2016 5/1/2016 5/3/2016 5/20/2016 7/4/2016 HC2 MY1 1/16/2016 Stream Gage 5/3/2016 7/4/2016 HC1 MY2 5/21/2017 Stream Gage 7/1/2017 9/5/2017 10/9/2017 10/23/2017 HC2 MY2 1/23/2017 Stream Gage 2/9/2017 2/26/2017 4/24/2017 5/21/2017 7/1/2017 9/5/2017 10/9/2017 10/23/2017 10/29/2017 HC1 MY3 2/3/2018 Stream Gage 2/7/2018 4/24/2018 5/18/2018 5/30/2018 10/11/2018 10/26/2018 HC2 MY3 2/7/2018 Stream Gage 4/24/2018 5/18/2018 10/11/2018 10/26/2018 HC1 MY4 2/18/2019 Stream Gage 4/14/2019 6/8/2019 7/9/2019 HC2 MY4 2/18/2019 Stream Gage 4/14/2019 6/8/2019 7/9/2019 HC1 MY5 1/3/2020 Stream Gage 1/24/2020 2/6/2020 2/11/2020 2/13/2020 HC2 MY5 4/30/2020 Stream Gage 5/21/2020 6/1/2020 7/27/2020 8/13/2020 Recorded Stream Flow Events Owls Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Owls Den Mitigation Site: Stream Gage for HU R2 (XS 6) DMS Project No. 95808 768 6.0 Beaver dam 767 influence 766 5 .0 765 4.0 764 a — _ > 763 3.0 c 3 762 761 2.0 760 1.0 759 0.0 758 C 4 T C b0 O_ > u m w Q 5 Q v�i O Z LL Rainfall HU R2 (XS 6) Water Depth — — Thalweg Elevation • Bankfull Recorded Stream Flow Events Owls Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 767 766 x 765 w w J d 3 764 763 762 Owls Den Mitigation Site: Stream Gage for HC2 (XS 13) DMS Project No. 95808 6.0 5.0 4.0 2 3.0 m C 2.0 1.0 0.0 Q T C to O_ > u LL Q g Q O Z Rainfall HC2 (X513) Water Depth — — Thalweg Elevation • Bankfull Table 14. Wetland Gage Attainment Summary Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Summary of Groundwater Gage Results for Monitoring Years 1 through 7 Success Criteria Achieved/Max Consecutive Days During Growing Season (Percentage)1 Year 1 (2016) Year 2 (2017) Year 3 (2018) Year 4 (2019) Year 5 (2020) Year 6 (2021) Year 7 Gage (2022) No/4 Days No/14 Days No/16 Days Yes/19 Days No/15 Days 1 (2%) (6%) (7%) (9%) (6.7%) Yes/223 Days Yes/223 Days Yes/142 Days Yes/113 Days Yes/223 Days 2 (100%) (100%) (64%) (51%) (100%) Yes/223 Days Yes/223 Days Yes/218 Days Yes/222 Days Yes/223 Days 3 (100%) (100%) (98%) (100%) (100%) Yes/75 Days Yes/94 Days Yes/143 Days Yes/49 Days Yes/109 Days 4 (34%) (42%) (64%) (22%) (48.9%) Yes/223 Days Yes/223 Days Yes/176 Days Yes/222 Days Yes/223 Days 5 (100%) (100%) (80%) (100%) (100%) Yes/20 Days Yes/53 Days Yes/87 Days Yes/61 Days Yes/97 Days 6 (9%) (24%) (39%) (27%) (43.5%) Yes/39 Days Yes/68 Days Yes/96 Days Yes/63 Days Yes/97 Days 7 (18%) (31%) (43%) (28%) (43.5%) No/10 Days Yes/49 Days Yes/47 Days Yes/34 Days Yes/55 Days 8 (5%) (22%) (21%) (15%) (24.7%) Yes/30 Days Yes/51 Days Yes/83 Days Yes/36 Days Yes/106 Days 9 (14%) (23%) (37%) (16%) (47.4%) Yes/223 Days Yes/223 Days Yes/217 Days Yes/223 Days Yes/223 Days 10 (100%) (100%) (98%) (100%) (100%) Yes/89 Days Yes/52 Days Yes/96 Days Yes/113 Days Yes/100 Days 11 (40%) (23%) (43%) (51%) (44.8%) Yes/39 Days Yes/53 Days Yes/82 Days Yes/58 Days Yes/111 Days 12 (40%) (24%) (37%) (26%) (49.8%) Yes/223 Days Yes/223 Days Yes/217 Days Yes/223 Days Yes/97 Days 13 (100%) (100%) (98%) (100%) (43.5%) Yes/192 Days Yes/218 Days Yes/222 Days Yes/223 Days 14 --- (87%) (98%) (100%) (100%) Yes/54Days Yes/76 Days 15 --- --- (24%)2 (34.1%) Reference Yes/83 Days Yes/124 Days Yes/157 Days Yes/223 Days Yes/223 Days Gage (37%) (56%) (71%) (100%) (100%) 15uccess Criteria: Water table within 12 inches of ground surface for 8.1% of growing season (3/28 - 11/4) z GWG 15 installed December 2018 *GWG 6, 7, and 13 MY5 data from July 2020- Nov 2020 not available due to probe malfunction Groundwater Gage Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Wetland Re-establishment 30 20 10 c 0 a J -10 5 -20 -30 -40 c n � LL � C 0 v Owl's Den Groundwater Gage #1 Monitoring Year 5 - 2020 _ o N �0 0 0 6 � 0 15 Consecutive Days t= Y N =L�E,Mcmm �= Q c75 W 0_ + Q Q n O Rainfall Reference Gage Depth Gage #1 — — Criteria Level 6.0 5.0 4.0 c 3.0 G W 2.0 1.0 0.0 o (U Z 0 Groundwater Gage Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Wetland Re-establishment 30 20 10 c C 0 C 0 v Owl's Den Groundwater Gage #2 to Monitoring Year 5 - 2020 v o c o o � 11 6.0 C, 0 C7 o m 223 Consecutive Days o 5.0 Y I 4.0 c 3.0 C M W 10� —_ ___i--V— L. _ _ I___ _� ___ I' _'__ ___ __ I11 I___ I_______ I2.0 _ 20 Q c75 on n + Q Q n O Rainfall Reference Gage Depth Gage #2 _ _ Criteria Level 1.0 0.0 o v z � Groundwater Gage Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Wetland Re-establishment C 0 C 0 v Owl's Den Groundwater Gage #3 to Monitoring Year 5 - 2020 v o c o 30 0� �� 0 6.0 - 0 223 Consecutive Days 0 20 I w 5.0 n 10 4.0 c v = 0 3.0 c M m a 10 _ _ _ _ _ _ _ L _ _ 1 _ _ _ _ _ _ _ _ _ _ _ _ _ _ 2.0 20 30 it .�} a_ u 1- i 11 _ .. a....n i 4 _. _ �_ ��_ 1 n ten__ 1, u _ 1 1 J 1_ m ..— — ■ ■ .,_1 C i T C75 W Qai +' g Q � Q v°'i O Rainfall Reference Gage Depth Gage #3 — — Criteria Level — 1.0 0.0 0 N Z � Groundwater Gage Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Wetland Re-establishment C O C O v Owl's Den Groundwater Gage #4 to Monitoring Year 5 - 2020 o c o 30 0 0�0 0 u�i C7 � o�' 109 Consecutive Days 20 M 10 c v v 0 J MILL' J 10J _ _ _ _ L 20 30 FE . _ 1 a_ u " i 11 _ .. a....n 1 4 1 _. _ '11_ 1 1 "'Ell 1 1 y u _ 1 1.11_ m .1- — L L ■ ■''_I n_ ! NtC Q tTv 3 N U O Q Q v1 O z Rainfall Reference Gage Depth Gage #4 — — Criteria Level 6.0 5.0 4.0 c 3.0 C M W 2.0 1.0 0.0 Groundwater Gage Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Wetland Re-establishment 30 20 10 c v v 0 J cc 10 No 30 R. 101 C Q � LL C 0 C 0 v Owl's Den Groundwater Gage #5 n Monitoring Year 5 - 2020 o c o 0 � 11 C, 0 C7 0 223 Consecutive Days 0 I � Y f6 Q. T C 5 bD Q U Q Q N O Rainfall Reference Gage Depth Gage #5 — — Criteria Level 6.0 5.0 4.0 c 3.0 C M W 2.0 1.0 0.0 0 N z � Groundwater Gage Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Wetland Rehabilitation 40 30 20 = 10 v J 0 G! (9 -10 -20 -30 -40 Owl's Den Groundwater Gage #6 Monitoring Year 5 - 2020 Y N tC Q m - 7 N U O N LL g ¢ -a Q O z o Rainfall Reference Gage Depth Gage #6 — — Criteria Level 6.0 5.0 4.0 c 3.0 G 2.0 1.0 0.0 Groundwater Gage Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Wetland Re-establishment 40 30 20 = 10 v J 0 G! (9 -10 -20 -30 -40 Owl's Den Groundwater Gage #7 Monitoring Year 5 - 2020 Y N tC Q M - 7 N U O N LL g ¢ -a Q O z o Rainfall Reference Gage Depth Gage #7 — — Criteria Level 6.0 5.0 4.0 c 3.0 G 2.0 1.0 0.0 Groundwater Gage Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Wetland Re-establishment 30 20 10 = 0 v -10 a m -20 -30 -40 -50 N fa O_ M - 3 N O N Q -a Q N O z Rainfall Reference Gage Depth Gage #8 — — Criteria Level 6.0 5.0 4.0 c 3.0 c 2.0 1.0 0.0 Groundwater Gage Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Wetland Re-establishment C C O O v Owl's Den Groundwater Gage #9 to Monitoring Year 5 - 2020 v o c o 30 0 0�0 0 Ln C7 � ° en 106 Consecutive Days o t= 20 10 c v v 0 J -10 -20 -30 t6 O. tT6 3 N U O N LL g ¢ 2! Q O z o Rainfall Reference Gage Depth Gage #9 — — Criteria Level 6.0 5.0 4.0 c 3.0 C M W 2.0 1.0 M Groundwater Gage Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Wetland Rehabilitation 30 20 10 c 10 No C 0 C 0 v Owl's Den Groundwater Gage #10 n Monitoring Year 5 - 2020 v o c o 000 w 223 Consecutive Days 0 Ln 0 0 30 it .�} a_ u 1- i 1' _ .. `01 i 0_. _ �_ ��_ 1 n ten__ 1, u _ 1 1 J 1_ - ■ ■ .,_1 c n c75 W 0_ + O Rainfall Reference Gage Depth Gage #10 — — Criteria Level 6.0 5.0 4.0 c 3.0 C m W 2.0 1.0 0.0 o a z o Groundwater Gage Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Wetland Re-establishment 0 0 0 v Owl's Den Groundwater Gage #11 n Monitoring Year 5 - 2020 v o c o 30 0� �� 6.0 0 0 m 0 20 ,t� m 100 Consecutive Days _ 0 LL, 5.0 10 4.0 c v �= 0 3.0 M -10 2.0 -20 1.0 -30 0.0 LL t6 O. tTC g ¢ g 3 N U Q m O O N z o Rainfall Reference Gage Depth Gage #11 — — Criteria Level Groundwater Gage Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Wetland Re-establishment 30 20 10 c v a, 0 J A -10 -20 -30 c n � LL C 0 C 0 v Owl's Den Groundwater Gage #12 n Monitoring Year 5 - 2020 a, ' o o c o 0 � 11 C, 0 C7 o M o Y111 Consecutive Days > c75 W 0_ + > Q Q va'i O Z Rainfall Reference Gage Depth Gage #12 — — Criteria Level aaii 0 6.0 5.0 4.0 c 3.0 C M 2.0 1.0 0.0 Groundwater Gage Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Wetland Rehabilitation C O C O v Owl's Den Groundwater Gage #13 to Monitoring Year 5 - 2020 v o c o 30 2 3 0000 0 Ln C7 � m 97 Consecutive Days o t= 20 10 c v J 0 10 Gage Malfunction from 7/2/2020 -20 L i i.- , , :" I -. -30 t6 O. tC Y 7 N U O LL g ¢ g Q O z o Rainfall Reference Gage Depth Gage #13 — — Criteria Level 6.0 5.0 4.0 c 3.0 C 2.0 1.0 M Groundwater Gage Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Wetland Rehabilitation 30 20 10 c 10 No C 0 C 0 v Owl's Den Groundwater Gage #14 to Monitoring Year 5 - 2020 v o c o 0 � 11 C, 0 C7 M 223 Consecutive Days o t= Y � N W 30 it .�} a_ u 1- i 1' _ .. `01 i 0_. _ �_ ��_ 1 n ten__ 1, u _ 1 1 J 1_ - ■ ■ .,_1 c n c75 W 0_ + �i Z Q Q n 0 Rainfall Reference Gage Depth Gage #14 — — Criteria Level 6.0 5.0 4.0 c 3.0 C m W 2.0 1.0 0.0 0 N z o Groundwater Gage Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Wetland Rehabilitation 30 20 10 0 a v J -10' -20 -30 C 0 0 v Owl's Den Groundwater Gage #15 n Monitoring Year 5 - 2020 cz o c o 76 Cons IL 11�1l�R■11■I�I�IIIR�win 511� -40 r n L L c on n �i Q Q n O Rainfall Reference Gage Depth Gage #15 — — Criteria Level 6.0 5.0 4.0 c 3.0 i 2.0 1.0 0.0 Groundwater Gage Plots Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Wetland Number C 0 C 0 v Owl's Den Reference Gage to Monitoring Year 5 - 2020 o c o 30 00 - 6.0 0 2 (7 � 25 0 en 0 Y223 Consecutive Days 0 5.0 20 ^ "' 15 4.0 �-. 10 = 5 3.0 R a 0 2.0 -5 -10 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 1.0 -15 20ill---rA L A L L L A 0.0 t6 O. t6 7 N O N LL Q Q Ln O z Rainfall Reference Gage Depth — — Criteria Level Monthly Rainfall Plot Owl's Den Mitigation Site DMS Project No. 95808 Monitoring Year 5 - 2020 Owl's Den 30-70 Percentile Graph for Rainfall in 2020 Lincolnton, NC 10 9 8 7 c 6 c 0 m 5 _ 'u v a` 4 3 2 1 0 Jan-20 Feb-20 Mar-20 Apr-20 May-20 Jun-20 Jul-20 Aug-20 Sep-20 Oct-20 Nov-20 Dec-20 Date USGS 02143040 Jacob Fork at Ramsey, NC -30th Percentile -70th Percentile 30th and 70th percentile rainfall data collected from weather station NC4996, in Lincolnton, NC (USDA, 2000).