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HomeMy WebLinkAbout20170537 Ver 1_Year 2 Monitoring Report_20201002ID#* 20170537 Version* 1 Select Reviewer:* Erin Davis Initial Review Completed Date 10/02/2020 Mitigation Project Submittal - 10/2/2020 Is this a Prospectus, Technical Proposal or a New Site?* r Yes r No Type of Mitigation Project:* V Stream Pr Wetlands r- Buffer r` Nutrient Offset (Select all that apply) Project Contact Information Contact Name:* Jamey McEachran Project Information ................................................................................... ID#:* 20170537 Existing IDr Project Type: Project Name: County: Email Address:* jmceachran@res.us Version: *1 Existing Version r DMS r Mitigation Bank Hannah Bridge Stream and Wetland Mitigation Site Johnston Document Information Mitigation Document Type:* Mitigation Monitoring Report File Upload: Hannah Bridge Year 2 Monitoring Report_DWR.pdf 14.39MB Rease upload only one RDFof the corrplete file that needs to be subrritted... Signature Print Name:* Jamey McEachran Signature:* 3600 Glenwood Ave, Suite 100 res Raleigh, NC 27612 Corporate Headquarters 6575 West Loop South, Suite 300 Bellaire, TX 77401 Main: 713.520.5400 October 2, 2020 Samantha Dailey U.S. Army Corps of Engineers Regulatory Division 3331 Heritage Trade Drive, Suite 105 Wake Forest, NC 27587 RE: Hannah Bridge Year 2 Monitoring Report (SAW-2015-01799) Ms. Dailey, Please find attached the Hannah Bridge Year 2 Monitoring Report. In Year 2, 19 of the 20 vegetation plots met the 320 stems per acre success criteria. The area (- 0.35 acres) in and around the VP16 will be supplemental planted in early 2020. Bankfull events were recorded on all three stage recorders and the flow gauge documented 200 consecutive flow days in Year 2. Three of the 11 groundwater wells and one of the two reference groundwater wells met the 12 percent hydroperiod success criteria. Six of the eight wells that did not meet success improved from the previous year. RES expects the groundwater data to continue improving in following years. RES performed supplemental planting and Chinese privet treatments in Year 2. There were two additional areas of re -sprouted Chinse privet reported that will be treated with herbicide in Year 3. RES is requesting a 10% stream credit release (446.600 SMUs) and a 10% wetland credit release (1.00 WMU). On December 19, 2019, the IRT provided comments on the Hannah Bridge Year 1 Monitoring Report. Please find those comments below with RES' responses in blue. 1. We would consider both TH3 with zero flow and wetlands with 1-3% hydroperiods to be "at -risk" areas in need of close monitoring/evaluation next year. TH3 recorded 200 consecutive flow days in Year 2. RES believes this increase is due to a flow path forming through the downstream riffle at a lower elevation. Also, RES understands and agrees that the 1-3% hydroperiod wetland areas are considered "at - risk" and will continue to monitor the wetland hydroperiods. 2. Include planned maintenance actions noted in the cover letter (supplemental planting and invasive treatment) within the actual monitoring report. Next years planned maintenance activities were included in the monitoring report. 3. Include stream and vegetation survey dates in Table 2. The dates of the monitoring activities are included in Table 2. 4. Include photo location points on Figure 2. As RES does Up, Down, Left and Right photos at every cross section and photos at every vegetation plot, we have determined over time that these are much more likely to show changes then photo stations, we do not have photo points on Figure 2 as they are the same points as those cross sections and vegetation plots. res.us 5. Include a visual assessment statement regarding easement boundary condition. Ideally, also add photos of crossings. A statement of the visual assessment was added to monitoring report. 6. Page 9 second paragraph states 12 automatic pressure transducer gauges but should be 13. This has been corrected. 7. GW6 graph legend is labelled "GW1 ". This has been corrected. Thank you, 6W-4�116� Ryan Medric I Ecologist HANNAH BRIDGE STREAM AND WETLAND MITIGATION SITE JOHNSTON COUNTY, NORTH CAROLINA SA W-2015-01799 YEAR 2 MONITORING REPORT Provided by: fires Bank Sponsor: EBX-Neuse, LLC, An entity of Resource Environmental Solutions 3600 Glenwood Ave, Suite 100 Raleigh, NC 27612 919-209-1056 September 2020 Table of Contents 1.0 Project Summary..................................................................................................................................... 1 1.1 Project Location and Description.............................................................................................. 1 1.2 Project Goals and Objectives.................................................................................................... 2 1.3 Project Success Criteria............................................................................................................. 2 StreamSuccess Criteria................................................................................................................... 2 WetlandSuccess Criteria................................................................................................................. 3 VegetationSuccess Criteria............................................................................................................. 3 1.4 Project Components.................................................................................................................. 3 1.5 Design/Approach.......................................................................................................................4 Stream.............................................................................................................................................. 4 Wetland............................................................................................................................................ 5 1.6 Construction and As -Built Conditions...................................................................................... 6 1.7 Year 2 Monitoring Performance(MY2).................................................................................... 6 Vegetation........................................................................................................................................ 6 StreamGeomorphology................................................................................................................... 7 StreamHydrology............................................................................................................................ 7 WetlandHydrology.......................................................................................................................... 7 2.0 Methods.................................................................................................................................................. 7 3.0 References............................................................................................................................................... 9 ADnendix A: Background Tables Table 1: Project Mitigation Components Table 2: Project Activity and Reporting History Table 3: Project Contacts Table Table 4: Project Contacts Table Figure 1: Site Location Map Appendix B: Visual Assessment Data Figure 2: Current Conditions Plan View Vegetation Plot Photos Monitoring Device Photos Stream and Vegetation Problem Areas Appendix C: Vegetation Plot Data Table 5: Planted Species Summary Table 6: Vegetation Plot Mitigation Success Summary Table 7a. Stem Count Total and Planted by Plot Species Table 7b. Random Vegetation Monitoring Plot Data Appendix D: Stream Measurement and Geomorphology Data Baseline Cross -Section Plots Table 8. Baseline Stream Data Summary Table 9. Cross Section Morphology Data Table Appendix E: Hydrolou Data Table 10. 2020 Rainfall Summary Table 11. Documentation of Geomorphically Significant Flow Events MY2 Stream Flow Hydrograph Table 12. 2020 Max Hydroperiod Table 13. Summary of Groundwater Monitoring Results MY2 Groundwater Well Hydrographs Hannah Bridge Year 2 Monitoring Report Stream and Wetland Mitigation Site September 2020 1.0 Proiect Summary 1.1 Project Location and Description The Hannah Bridge Stream and Wetland Mitigation Site (the Site) is located within a watershed dominated by agricultural land use in Johnston County, North Carolina, approximately 5 miles south of the town of Four Oaks. The project streams and wetlands were significantly impacted by channelization and cattle access. The project involves the restoration and protection of streams in the Neuse River watershed and the restoration and enhancement of adjacent riparian wetlands. The purpose of this mitigation site is to restore and enhance a stream/wetland complex located within the Neuse River Basin. The Site was constructed in concurrence with the Hannah Bridge Riparian Buffer and Nutrient Offset Mitigation Bank. The Site lies within USGS Hydrologic Unit Code (HUC) 03020201 (USGS, 2012) and within the North Carolina Division of Water Resources (NCDWR) Neuse River Sub -basin 03-04-02 (NCDENR, 2005). The 2010 Neuse River Basin Plan (NRBP) identified the Hannah Creek watershed (HUC 03020201150020) as a Targeted Local Watershed (TLW), a watershed that exhibits both the need and opportunity for wetland, stream, and riparian buffer restoration. The total easement area is 46.2 acres. The wooded areas along the easement corridor designated for restoration activities were classified as mixed hardwoods. Invasive species were present throughout the wooded areas. Channels restored were degraded to a point where they no longer accessed their floodplain, lacked riparian buffers, allowed livestock access, and aquatic life was not supported. Additionally, the riparian buffer was in poor condition throughout most of the project area where it was devoid of trees or shrubs and pasture was present up to the edge of the pre -construction channel. The Site includes Priority I restoration, Enhancement Level I, Enhancement Level II, and Preservation. Priority I restoration reaches incorporate the design of a single -thread meandering channel, with parameters based on data taken from the reference site described above, published empirical relationships, NC Coastal Plain Regional Curves, and hydrologic and hydraulic analyses. The Site includes wetland restoration, enhancement, and preservation. Wetland restoration occurs adjacent to Priority I stream restoration reaches. The restoration approach was to reconnect the floodplain wetlands to the stream, fill existing ditches, rough the floodplain surface, and plant native tree and shrub species commonly found in small stream swamp ecosystems. The wetland enhancement treatment primarily excludes livestock, improves hydrology via pond removal and ditch plugging and planting native tree and shrub species. The Site is to be monitored on a regular basis and a physical inspection of the Site will be conducted at a minimum of twice per year throughout the seven-year post -construction monitoring period, or until performance standards are met. These site inspections will identify site components and features that require routine maintenance. The measure of stream restoration success will be documented by bankfu11 flows and no change in stream channel classification. Sand bed channels are dynamic and minor adjustments to dimension and profile are expected. The measure of vegetative success for the Site will be the survival of at least 210 seven-year old planted trees per acre with an average height of 10 feet at the end of year seven of the monitoring period. Upon approval for closeout by the Interagency Review Team (IRT), the Site will be transferred to the North Carolina Wildlife Habitat Foundation (NCWHF). The NCWHF will be responsible for periodic inspection of the Site to ensure that restrictions required in the Conservation Easement or the deed restriction document(s) are upheld. Endowment funds required to uphold easement and deed restrictions will be negotiated prior to site transfer to the responsible party. Hannah Bridge 1 Year 2 Monitoring Report Stream and Wetland Mitigation Site September 2020 1.2 Project Goals and Objectives The 2010 Neuse River Basin Restoration Priorities (RBRP) identified several restoration needs for the entire Neuse River Basin, as well as for HUC 03020201, specifically. The Hannah Creek watershed (HUC 03020201150020) was identified as a Targeted Local Watershed (TLW), a watershed that exhibits both the need and opportunity for wetland, stream, and riparian buffer restoration. The Hannah Creek watershed includes 34 square miles of watershed area, with forty-two percent of the 102 stream miles lacking wooded buffers. Fifty-four percent of the watershed is used for agricultural purposes and seven percent is currently developed. The Site was identified as a stream and buffer restoration opportunity to improve water quality, habitat, and hydrology within the Neuse River Basin. This project is intended to provide Stream Mitigation Units to be applied as compensatory mitigation for unavoidable authorized impacts to waters of the US under Section 404 of the Clean Water Act (33 U.S.C. 1344) and support the overall goal of "no net loss" of aquatic resources in the United States. The Site is located within the downstream end of HUC 03020201 and includes streams that directly discharge into Hannah Creek. The overarching goal of this project is to address major watershed stressors identified in the 2010 Neuse RBRP for this TLW by promoting nutrient and sediment reduction in agricultural areas by restoring and preserving streams, wetlands, and riparian buffers and improve functional uplift to the ecosystem. The project design goals and objectives, including restoration of riparian buffers to filter runoff from agricultural operations and improve terrestrial habitat, and construction of in -stream structures to improve habitat diversity, will address the degraded water quality and nutrient input from farming. The project goals will be addressed through the following project objectives: • Increase forested riparian buffers to at least fifty feet on both sides of the channel along the project reach with an appropriate riparian plant community (a Coastal Plain Small Stream Swamp diverse mix of species). • Increase plant species diversity and eradicate invasive species within the project boundaries. • Improve flood bank connectivity by reducing bank height ratios and increase entrenchment ratios to reference reach levels. • Reduce sediment supply from eroding stream banks in order to restore channel stability by restoring the stream channel pattern, dimension, and profile in stream channels to reference reach conditions. • Reduce impact of livestock to the stream channels and runoff through the increase in the livestock exclusion. • Restore stable flow dynamics by improving stream velocity and shear stress to levels between the critical shear stress (shear stress required to initiate motion) and the allowable limits 1.3 Project Success Criteria The Site follows the USACE 2003 Stream Mitigation Guidelines and the "Wilmington District Stream and Wetland Compensatory Mitigation Update" dated October 24, 2016. Cross section and vegetation plot data will be collected in Years 0, 1, 2, 3, 5, and 7. Stream and wetland hydrology data and visual monitoring will be reported annually. Stream Success Criteria Four bankfull flow events must be documented within the seven-year monitoring period. The bankfull events must occur in separate years. Otherwise, the stream monitoring will continue until four bankfull events have been documented in separate years. Hannah Bridge 2 Year 2 Monitoring Report Stream and Wetland Mitigation Site September 2020 There should be little change in as -built cross -sections. If changes do take place, they should be evaluated to determine if they represent a movement toward a less stable condition (for example down -cutting or erosion), or are minor changes that represent an increase in stability (for example settling, vegetative changes, deposition along the banks, or decrease in width/depth ratio). Cross sections shall be classified using the Rosgen stream classification method, and all monitored cross -sections should fall within the quantitative parameters defined for channels of the design stream type. Bank height ratio shall not exceed 1.2, and the entrenchment ratio shall be no less than 2.2 within restored reaches. Channel stability should be demonstrated through a minimum of four bankfull events documented in the seven-year monitoring period. Digital images will be used to subjectively evaluate channel aggradation or degradation, bank erosion, success of riparian vegetation, and effectiveness of erosion control measures. Longitudinal images should not indicate the absence of developing bars within the channel or an excessive increase in channel depth. Lateral images should not indicate excessive erosion or continuing degradation of the banks over time. A series of images over time should indicate successional maturation of riparian vegetation. Wetland Success Criteria The Natural Resources Conservation Service (MRCS) has a current WETS table for Johnston County upon which to base a normal rainfall amount and average growing season. The closest comparable data station was determined to be the WETS station for Smithfield, NC. The growing season for Johnston County is 233 days long, extending from March 18 to November 6, and is based on a daily minimum temperature greater than 28 degrees Fahrenheit occurring in five of ten years. Based upon field observation across the site, the NRCS mapping units show a good correlation to actual site conditions in areas of the site. Mitigation guidance for soils in the Coastal Plain suggests a hydroperiod for the Bibb soil of 12-16 percent of the growing season. The hydrology success criterion for the Site is to restore the water table so that it will remain continuously within 12 inches of the soil surface for at least 12 percent of the growing season (approximately 27 days) at each groundwater gauge location. Vegetation Success Criteria Specific and measurable success criteria for plant density within the riparian buffers on the Site will follow IRT Guidance. Vegetation monitoring plots will be a minimum of 0.02 acres in size, and cover a minimum of two percent of the planted area. Vegetation monitoring will occur between July 1st and leaf drop. The interim measures of vegetative success for the site will be the survival of at least 320 planted three-year old trees per acre at the end of Year 3, 260 five-year old trees at the end of Year 5 with an average height of seven feet, and the final vegetative success criteria will be 210 trees per acre with an average height of 10 feet at the end of Year 7. Height measurement success criteria do not apply to the understory trees or shrubs. Volunteer trees will be counted, identified to species, and included in the yearly monitoring reports, but will not be counted towards the success criteria of total planted stems. 1.4 Project Components The project area is comprised of two separate easement locations along multiple drainage features that flow into Hannah Creek. The northern easement area captures a single tributary to Hannah Creek and a portion of its headwaters. The southern easement area is separated from the northern area by an active agricultural field, and is divided into three different areas due to a utility crossing and a culvert crossing. The stream and wetland mitigation components are summarized below and in Table 1. Hannah Bridge 3 Year 2 Monitoring Report Stream and Wetland Mitigation Site September 2020 Mitigation Plan Stream Credits MitigationMitigation Mitigation Stationing Existing Reach Plan(Length SMUs Type (Mitigation Plan) Length (LF) Ratio HB1 Restoration 0+15 to 1+31 99 117 1:1 117 HB1 Restoration 1+63 to 14+45 1,385 1,284 1:1 1,284 HB2 Enhancement II 14+45 to 18+37 392 392 2.5:1 157 HB3 Restoration 18+37 to 36+44 1,588 1,807 1:1 1,807 HB4 Enhancement I 36+84 to 42+63 579 579 1.5:1 386 HB4 Preservation 42+63 to 44+91 228 228 10:1 23 HF1 Preservation 2+18 to 16+04 1,386 1,386 10:1 139 HF2 Preservation 6+40 to 7+89 149 149 10:1 15 TH3 Enhancement I t 0+63 to 7+79 716 716 1:1 716 Total 6,522 6,658 4,643 t Restoration Credit Mitigation Plan Wetland Credits Mitigation Type Total Acres Mitigation Ratio WMUs Re-establishment 3.27 1:1 3.27 Enhancement - High 12.37 2:1 6.18 Enhancement - Low 1.67 3:1 0.56 Preservation 7.27 10:1 0.73 Protection 2.55 No Credit 0.00 27.13 10.73 1. S Design/Approach The Site includes Priority I restoration, Enhancement Level I, Enhancement Level II, and Preservation. Priority I restoration reaches incorporate the design of a single -thread meandering channel, with parameters based on data taken from the reference site, published empirical relationships, NC Coastal Plain Regional Curves, and hydrologic and hydraulic analyses. As a result of the restoration of planform and dimension, frequent overbank flows, and a restored riparian buffer provide the appropriate hydrology and sediment transport throughout this Coastal Plain watershed. All non -vegetated areas within the easement were planted with native vegetation and any areas of invasive species were removed and/or treated. • Reach HB1— Reach begins at western limits of project totaling 1,430 linear feet but is adjusted to 1,400 linear feet due to a 30-foot break in the easement due to an overhead power line. Priority I Hannah Bridge 4 Year 2 Monitoring Report Stream and Wetland Mitigation Site September 2020 Restoration was used for Reach BB 1 which included relocating the channel towards the north, such that it meanders within the middle of the valley. Reach HB2 (STA 14+45 to STA 18+37) — Reach begins at the end of BB 1 and flows northeast to the confluence with Reach HB3 totaling 392 linear feet. Enhancement Level II was used for Reach HB2, beginning approximately 200 feet downstream of the confluence with HF1. Minimal grading and live stake planting were required in the few areas that exhibited bank erosion. Invasive species were treated and removed during construction, and those areas were replanted with native riparian vegetation. • Reach HB3 (STA 18+37 to STA 36+44) — Reach immediately downstream of Reach HB2 and flows east to an existing farm crossing totaling 1,807 linear feet. Priority I Restoration was used for Reach HB3 to address historic straightening and irregular banks resulting from cattle impacts. The design approach included meandering the channel within the natural valley and backfilling the existing stream. Reach HB4 (STA 36+84 to STA 42+63; STA 42+63 to 44+91) — Reach beginning at farm crossing just downstream of Reach HB3 and flows north to its confluence with Hannah Creek. A combination of Enhancement I and Preservation was used for Reach HB4 downstream of the easement break. Enhancement I was used for over 500 feet beginning downstream of the easement break, and Preservation was used for the channel from the Enhancement I section to the confluence with Hannah Creek. The design approach included installing log structures at various points along the channel to raise the channel invert within the upper section. Because the channel was previously channelized and relocated to the west side of the valley, the structures allow flows to frequently inundate the valley floor and existing wetlands located to the east. A floodplain bench was also constructed along the left bank within the enhancement section. • Reach HF1 (STA 2+18 to STA 13+58; STA 13+58 to 16+04) — Reach beginning in a forested area in the southern portion of the project and flows north until its confluence with Reach BB 1 totaling 1,386 linear feet. Preservation was used for Reach HF1 because the majority of the channel is stable throughout the easement and provides a variety of aquatic habitats. • Reach HF2 (STA 6+40 to STA 7+89) — Reach beginning in agricultural field in the southern portion of the project and flows north until its confluence with Reach HF1 totaling 149 linear feet of Preservation. Reach TH3 (STA 0+63 to STA 7+79) — Reach begins just downstream of disturbed wetlands and an existing farm crossing located at the top of the project. The reach flows to the east into Hannah Creek totaling 716 linear feet. Enhancement Level I was used on Reach TH3. The design approach on this reach focused on improving the riparian buffer and in -stream habitat and floodplain benching. Construction activities included cutting a floodplain bench along the south side of the channel along the upper reach and installing grade control and woody debris structures throughout to improve vertical stability and aquatic habitat. Wetland The Site offers a total ecosystem restoration opportunity. As such, the wetland restoration and enhancement is closely tied to the stream restoration. The Site provides 10.73 WMUs through a combination of wetland restoration, enhancement, and preservation treatments. Hannah Bridge 5 Year 2 Monitoring Report Stream and Wetland Mitigation Site September 2020 Because of the soil characteristics and variations observed throughout the site, the primary wetland restoration activities, at a 1:1 credit ratio, were plugging the existing channel and constructing a stream channel at a higher elevation that elevates shallow groundwater depths and more frequently floods adjacent wetlands. Additional backfilling to create shallow depressions within the old channel and removal of spoil from pond excavation along the floodplains aids in the restoration of a natural floodplain surface relative to the surrounding landscape. Surface roughening and creation of shallow depressions throughout the restoration area provides an appropriate landscape for diverse habitat. Due to compaction and long term agricultural use, a shallow ripping of the surface to a depth of 6 to 8 inches was called for to allow adequate porosity for infiltration and storage and provide microtopographic relief. Wetland enhancement is located along the floodplains of the stream restoration and enhancement reaches within the jurisdictional wetland areas. The construction of a farm pond had altered surface drainage and placed spoil across the floodplain. As part of the wetland enhancement, this pond was removed, and hydrology was redirected towards the forested and grazed wetlands. The existing pasture areas on the Site were treated with wetland enhancement at a credit ratio of 2:1. A credit ratio of 3:1 was used for the grazed, forested wetland areas. The wetland mitigation treatment was primarily re -planting the disturbed pastures as forested wetlands and excluding livestock from the pasture and grazed forested wetlands. Enhancement activities included: reconnecting low-lying areas of hydric soil with the floodplain, farm pond removal, planting native tree and shrub species commonly found in small stream swamp ecosystems, and surface roughening to increase infiltration and storage. For the pond removal, the pond will be drained before breaching the dam and removing all existing PVC pipe. Per direction of the engineer, it is expected that excess spoil from the project will be placed within the existing pond footprint. 1.6 Construction and As Built Conditions Stream construction and planting was completed in May 2019. The Hannah Bridge Mitigation Site was built to design plans and guidelines. Project credits are based on design centerline, but as -built stream lengths are shown on Table 1. The as -built survey is attached in the Baseline Monitoring Report and includes a redlined version. 1.7 Year 2 Monitoring Performance (MY2) The Hannah Bridge Year 2 Monitoring activities were performed in July and September 2020. All Year 2 Monitoring data is present below and in the appendices. Most of the Site is on track to meeting vegetation, stream, and wetland interim success criteria. Vegetation Monitoring of the 17 fixed vegetation plots (VP) and three random vegetation plots (RVP) was completed during September 2020. Vegetation data are in Appendix C, associated photos are in Appendix B, and plot locations are in Appendix B. MY2 monitoring data indicates that 19 of 20 plots are exceeding the interim success criteria of 320 planted stems per acre. Planted stem densities ranged from 283 to 1,133 planted stems per acre with a mean of 660 planted stems per acre across all plots. A total of 20 species were documented within the plots. Volunteer species were reported in seven plots. The average planted stem height was 4.9 feet. VP 16 did not meet the interim success criteria in MY2. The 0.35-acre area that this plot is located in will be replanted in the spring of 2021. Visual assessment of vegetation outside of the monitoring plots indicates that the herbaceous vegetation is becoming well established throughout the project. RES performed supplemental planting in April 2020. This planting was overall successful with exception to the 0.35-acre area in and around VP16. RES plans Hannah Bridge 6 Year 2 Monitoring Report Stream and Wetland Mitigation Site September 2020 to perform a follow-up planting in this area in the spring of 2021. Chinese privet re -sprouts that were observed along the old BB channel and along the easement edge south of HB2 during MY were treated this year and will continue to have follow-up treatments in 2021 and as necessary throughout the monitoring period. Two new areas of Chinese privet re -sprouts were reported in MY2 totaling about 0.93 acres. These areas will be treated in 2021. RES did not observe any easement encroachment and all fencing was in good condition. Problem area photos are in Appendix B. Stream Geomorphology Geomorphology data for MY2 was collected during July 2020. Summary tables and cross section plots are in Appendix D. Overall the MY2 cross sections relatively match the MY0 cross sections. The MY2 conditions show that shear stress and velocities have been reduced for all restoration/enhancement reaches. All reaches were designed as sand bed channels and remain classified as sand bed channels. Visual assessment of the stream channel was performed to document signs of instability, such as eroding banks, structural instability, or excessive sedimentation. The channel is transporting sediment as designed and will continue to be monitored for aggradation and degradation. RES performed a supplemental livestake planting in March 2020. Additionally, RES treated the channel vegetation with aquatic safe herbicide in May 2020. The treatment should help with channel maintenance as the livestakes continue to grow and shade out the stream. Stream Hydrology During MY2, bankfull events were recorded on all three stage recorders. Stage Recorder BB 1 recorded five with a maximum event of 1.30 feet, Stage Recorder HB3 recorded eight with a maximum event of 1.67 feet and Stage Recorder HB4 recorded 12 with a maximum event of 3.53 feet. The flow gauge on T 13 recorded 200 consecutive flow days and 250 cumulative flow days. This was a major increase from the zero flow days recorded in MY I. RES believes the increase is due to a flow path forming through the downstream riffle at a lower elevation. Gauge locations are on Figure 2 and the associated data is in Appendix E. Wetland Hydrology During MY2, three of 11 groundwater wells (GW) and one of the two reference groundwater wells (RGW) met the 12 percent hydroperiod success criteria. Hydroperiods of the 11 groundwater wells ranged from one to 81 percent and the two reference groundwater wells ranged from nine to 26 percent. Six of the eight wells that did not meet success in MY2, showed improvement compared to last year. RES expects the groundwater wells to continue to improve. Groundwater well locations can be found on Figure 2 and the associated data is in Appendix E. 2.0 Methods Stream monitoring was conducted using a Topcon GTS-312 Total Station. Three-dimensional coordinates associated with cross-section data were collected in the field (NAD83 State Plane feet FIPS 3200). Morphological data were collected at 20 cross -sections. Survey data were imported into CAD, ArcGIS®, and Microsoft Excel® for data processing and analysis. The stage recorders include an automatic pressure transducer flow gauge and a manual crest gauge. The flow gauges were installed within the channel and will record flow conditions at an hourly interval. The manual crest gauges were installed on the bank at the bankfull elevation. During quarterly visits to the Site, the height of the corkline will be recorded. Automatic pressure transducer data from the flow gauges will be corrected using bankfull recordings from the crest gauges to produce the stage of the channel at hourly intervals. The stage recorder on HB4 does not have a Hannah Bridge 7 Year 2 Monitoring Report Stream and Wetland Mitigation Site September 2020 manual crest gauge and the bankfull events are reported using the elevation of the top of bank. The flow gauge on the intermittent stream is corrected using the elevation of the downstream riffle to detect stream flow. Vegetation success is being monitored at 17 fixed vegetation plots and three random vegetation plots. Vegetation plot monitoring follows the CVS-EEP Level 2 Protocol for Recording Vegetation (Lee et al. 2008) and includes analysis of species composition and density of planted species. Data are processed using the CVS data entry tool. In the field, the four corners of each plot were permanently marked with PVC at the origin and metal conduit at the other corners. Photos of each plot are to be taken from the origin each monitoring year. The random plots are to be collected in locations where there are no fixed vegetation plots. Random plots will most likely be collected in the form of 100 square meter belt transects with variable dimensions. Tree species and height will be recorded for each planted stem and the transects will be mapped and new locations will be monitored in subsequent years. Wetland hydrology is monitored to document success in wetland restoration and enhancement areas (as requested by NCIRT). This is accomplished with 13 automatic pressure transducer gauges (located in groundwater wells) that record daily groundwater levels. Ten have been installed within the wetland crediting area and two within reference wetland areas. One automatic pressure transducer is installed above ground for use as a barometric reference. Gauges are downloaded quarterly and wetland hydroperiods are calculated during the growing season. Well installation followed current regulatory guidance. Visual observations of primary and secondary wetland hydrology indicators are also recorded during quarterly site visits. Hannah Bridge 8 Year 2 Monitoring Report Stream and Wetland Mitigation Site September 2020 3.0 References Environmental Laboratory. 1987. U.S. Army Corps of Engineers Wetlands Delineation Manual, Technical Report Y-87-1. U.S. Army Engineer Waterways Experiment Station, Vicksburg, Mississippi. Harman, W., R. Starr, M. Carter, K. Tweedy, M. Clemmons, K. Suggs, C. Miller. 2012. A Function - Based Framework for Stream Assessment and Restoration Projects. US Environmental Protection Agency, Office of Wetlands, Oceans, and Watersheds, Washington, DC EPA 843-K-12-006. Lee Michael T., Peet Robert K., Roberts Steven D., and Wentworth Thomas R., 2008. CVS-EEP Protocol for Recording Vegetation Level. Version 4.2 North Carolina Division of Mitigation Services (NCDMS). `Broad River Basin Restoration Priorities 2009." (September 2014). Peet, R.K., Wentworth, T.S., and White, P.S. (1998), A flexible, multipurpose method for recording vegetation composition and structure. Castanea 63:262-274 Resource Environmental Solutions (2018). Hannah Bridge Stream and Wetland Mitigation Site Final Mitigation Plan. Rosgen, D. (1996), Applied River Morphology, 2nd edition, Wildland Hydrology, Pagosa Springs, CO. Schafale, M.P. 2012. Classification of the Natural Communities of North Carolina, Third Approximation. North Carolina Natural Heritage Program, Division of Parks and Recreation, NCDENR, Raleigh, NC. US Army Corps of Engineers (USACE), 2003. April 2003 NC Stream Mitigation Guidelines. U.S. Army Corps of Engineers (USACE). 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Atlantic and Gulf Coastal Plain Region (Version 2.0), ed. J. S. Wakeley, R. W. Lichvar, and C. V. Noble. ERDC/EL TR-10-20. Vicksburg, MS: U.S. Army Engineer Research and Development Center. US Army Corps of Engineers (USACE), 2016. Wilmington District Stream and Wetland Compensatory Mitigation Update. Hannah Bridge 9 Year 2 Monitoring Report Stream and Wetland Mitigation Site September 2020 Appendix A Background Tables Table 1. Hannah Bridge Stream and Wetland Mitigation Site - Mitigation Assets and Components Project Component (reach ID, etc.)' Wetland Position and HydroType2 Existing Footage or Acreage Stationing Mitigation Plan Footage or Acreage Restoration Level Approach Priority Level Mitigation Ratio (X:1) Mitigation Credits As -Built Footage or Acreage Notes/Comments HB1 99 0+15- 1+31 117 R PI 1 117 1401 Full Channel Restoration, Channel Relocation, Planted Buffer, Exclusion of Livestock, Permanent Conservation Easement HB1 1385 1+63-14+45 1284 R PI 1 1284 Full Channel Restoration, Channel Relocation, Planted Buffer, Exclusion of Livestock, Permanent Conservation Easement HB2 392 14+45- 18+37 392 Ell 2.5 157 392 Bank Stabilization, Invasive Treatment, Permanent Conservation Easement HB3 1588 18+37-36+44 1807 R PI 1 1807 1807 Full Channel Restoration, Channel Relocation, Planted Buffer, Exclusion of Livestock, Permanent Conservation Easement HB4 579 36+84- 42+63 579 El 1.5 386 579 Structure Installation, Floodplain Benching, Planted Buffer, Permanent Conservation Easement HB4 228 42+63- 44+91 228 P 10 23 228 Cattle Exclusion, Permanent Conservation Easement HF1 1,386 2+18-16+04 1,386 P 10 139 1,386 Permanent Conservation Easement HF2 149 6+40- 7+89 149 P 10 15 149 Planted Buffer, Permanent Conservation Easement TH3 716 0+63-7+79 716 El 1 716 716 Structure Installation, Floodplain Benching, Planted Buffer, Permanent Conservation Easement, 1: 1 Credit for Headwater Plant in/Protection W1 RR 5.76 5.76 E (High) 2 2.88 5.76 Wetland Planting, Livestock Exclusion, Floodplain Reonnection, Permanent Conservation Easement W2 RR 0.81 0.81 0.81 Wetland Planting, Permanent Conservation Easement, No Credit W3 RR 4.51 4.51 P 10 0.45 4.51 Permanent Conservation Easement W4 RR 1.67 1.67 E (Low) 3 0.56 1.72 Livestock Exclusion, Wetland Planting, Floodplain Reonnection, Permanent Conservation Easement M RR 0.97 0.97 E (High) 2 0.49 0.97 Plugged Ditch, Wetland Planting, Permanent Conservation Easement W6 RR 3.78 3.78 E (High) 2 1.89 3.78 Plugged Ditch, Wetland Planting, Livestock Exclusion, Floodplain Reonnection, Permanent Conservation Easement W7 RR 0.38 0.38 E (High) 2 0.19 0.38 Wetland Planting, Livestock Exclusion, Floodplain Reonnection, Permanent Conservation Easement W8 RR 0.07 0.07 P 10 0.01 0.07 Permanent Conservation Easement M RR 2.08 2.08 P 10 0.21 2.04 Permanent Conservation Easement W10 RR 1.36 1.36 E (High) 2 0.68 1.35 Wetland Planting, Livestock Exclusion, Floodplain Reonnection, Permanent Conservation Easement W11 RR 0.62 0.62 P 10 0.06 0.62 Permanent Conservation Easement W12 RR 0.11 0.11 E (High) 2 0.06 0.11 Wetland Planting, Livestock Exclusion, Floodplain Reonnection, Permanent Conservation Easement W13 RNR 1.74 1.74 1.74 Permanent Conservation Easement, No Credit W14 RR 3.27 3.27 R 1 3.27 3.28 Plugged Ditch, Wetland Planting, Livestock Exclusion, Floodplain Reonnection, Permanent Conservation Easement Project Credits Restoration Level Stream (SMU) Riparian Wetland (MU) on -riparian Wetland (WMU) Riverine Non-Riverine Restoration 3,924 3.27 Enhancement 6.74 Enhancement 386 Enhancement ll 157 Enhancement III Creation Preservation 176 0.73 Overall Assets Summary Overall Asset Category Credits Stream 4,643 RP Wetland 10.73 NR Wetland General Note -The above component table is intended to be a close complement to the asset map. Each entry in the above table should have clear d istinction and appropriate symbology in the asset map. 1- Wetland Groups represent pooled wetland po lygons in the map with the same wetland type and restoration level. If some of the wetland polygonswithin a group are in meaningfully d'Eferent landscape positions, soil types or have d ifferent community targets(as examples), then further segmentation in the table may be warranted. Wet land features impacted by cred it mod ifierssuch as of iIitiesshaII be listed as d istinct record with the impacted acreage tallied as d iscreet records in the table (See Wetland 7 above) 2- Wetland Position and Hydro Type- Indicates Riparian Riverine,(RR), riparinan non-riverine(RNR) or Non-Riverine (NR) 3- Buffer Assets- due to the complex nature of buffer and nutrient offset assets they are not included in this example table. Please seethe DIAS buffer mitigation plan template for the required asset table information. 4-Adjusted Mitigation Credits are based on the non-standard buffer widths Table 2. Project Activity and Reporting History Hannah Bridge Stream and Wetland Mitigation Site Elapsed Time Since grading complete: 1 year 5 months Elapsed Time Since planting complete: 1 year 5 months Number of reporting Years : 2 Activity or Deliverable Data Collection Complete Completion or Delivery Restoration Plan NA Jun-18 Final Design — Construction Plans NA Jul-18 Stream Construction NA Apr-19 Site Planting NA Apr-19 As -built (Year 0 Monitoring — baseline) May-19 May-19 Year 1 Monitoring Nov-19 Dec-19 Supplemental Planting NA Apr-20 Year 2 Monitoring XS: Jul (14/15)-2020 VP: Sep 22 - 2020 Sep-20 Year 3 Monitoring Year 4 Monitoring Year 5 Monitoring Year 6 Monitoring Year 7 Monitoring = The number of reports or data points produced excluding the baseline Table 3. Project Contacts Table Hannah Bridge Stream and Wetland Mitigation Site Designer WK Dickson and Co., Inc. / 720 Corporate Center Dr., Raleigh, NC 27607 Primary project design POC Ben Carroll (336) 514-0927 Construction Contractor KBS Earthwork Inc. / 5616 Coble Church Rd., Julian, NC 27283 Construction contractor POC Kory Strader (336) 362-0289 Survey Contractor Matrix East, PLLC / 906 N. Queen St., Suite A, Kinston, NC 28501 Survey contractor POC James Watson, PLS Planting Contractor H&J Forestry Planting contractor POC Matt Hitch Seeding Contractor KBS Earthwork Inc. / 5616 Coble Church Rd., Julian, NC 27283 Contractor point of contact Kory Strader (336) 362-0289 Seed Mix Sources Green Resource (336) 855-6363 Nursery Stock Suppliers Arborgen (845) 851-4129 Monitoring Performers RES / 3600 Glenwood Ave, Suite 100, Raleigh, NC 27612 Stream Monitoring POC Ryan Medric (919) 741-6268 Vegetation Monitoring POC Ryan Medric (919) 741-6268 Wetland Monitoring POC JRyan Medric (919) 741-6268 Table 4. Project Background Information Project Name Hannah Bridge County Johnston Project Area (acres) 46.2 Project Coordinates (latitude and longitude) Latitude: 35.4754 N Longitude: -78.3117 W Planted Acreage (Acres of Woody Stems Planted) 27.53 Project Watershed Summary Information Physiographic Province Coastal Plain River Basin Neuse USGS Hydrologic Unit 8-digit 03020201 USGS Hydrologic Unit 14-digit 3020201150020 DWR Sub -basin 03-04-02 Project Drainage Area (Acres and Square Miles) 894 ac (1.39 sgmi) Project Drainage Area Percentage of Impervious Area <2% CGIA Land Use Classification Agriculture (54%) Forest (39%) Residential (5%) Reach Summary Information Parameters H131 H132 HB3 HB4 HF1 HF2 TH3 Length of reach (linear feet) 1400 392 1807 807 1386 149 716 Valley confinement (Confined, moderately confined, unconfined) UC UC MC MC MC UC MC Drainage area (Acres and Square Miles) 667 752 816 894 78 13 24 Perennial, Intermittent, Ephemeral P P P P P I I NCDWR Water Quality Classification WA WA WA WA WA WA WA Stream Classification (existing) E4/5 E4/5 E5 E5 E5 G6c F5/G5c Stream Classification (proposed) E4/5 WA E4/5 WA WA WA WA Evolutionary trend (Simon) WA WA WA WA WA WA WA FEMA classification WA I WA WA WA WA WA WA Regulatory Considerations Parameters Applicable? Supporting Docs? Water of the United States - Section 404 Yes SAW-2015- 01799 Water of the United States - Section 401 Yes DWR # 17- 0537v2 Endangered Species Act Yes USFWS (Corr. Letter) Historic Preservation Act Yes SHPO (Corr. Letter) Coastal Zone Management Act (CZMA or CAMA) No N/A FEMA Floodplain Compliance Yes N/A Essential Fisheries Habitat No N/A Webb Mill Blackmon Rd Legend bb Conservation Easement CCPV Index Sheet Charlie Rd Charlie Rd < y a a o =V 3 0 A a Gree Blackmon pds�rrr Crossroads eA c Lo' W ilkl / / a / � c J Stricklands Cros a S tricklantls Crossroads Rd � O 3 N �^ 9, Moot F eC -4 'py y Pam, P� a 965 Gv Oak Forest w 3 S Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Oak Fares Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, Fares, contributors, and the.GIS `U'ser Community N Date: 9/28/2020 Figure 1 - Site Location Map w E ryes Hannah Bridge Site Drawn by: RTM s Checked by: BPB 0 500 1,000 Johnston County, North Carolina 1 inch = 2,000 feet Feet Appendix B Visual Assessment Data Hannah Bridge MY2 Vegetation Monitoring Plot Photos (9/22/2020) Vegetation Plot 1 Vegetation Plot 3 Vegetation Plot 5 Vegetation Plot 2 Vegetation Plot 4 Vegetation Plot 6 Vegetation Plot 7 Vegetation Plot 9 Vegetation Plot 11 Vegetation Plot 8 Vegetation Plot 10 Vegetation Plot 12 Vegetation Plot 13 Vegetation Plot 15 Vegetation Plot 17 Vegetation Plot 14 Vegetation Plot 16 Random Plot 1 Random Plot 3 Random Plot 2 Stream Problem Areas Hannah Bridge Feature Issue / Location Photo N/A N/A Vegetation Problem Areas Hannah Bridge Feature Category / Location / Size Photo F7- 5 . + f '`. Low Stem Density / Reach TH3 / 0.35 acres'` Invasive Species / HF1 / 0.71 acres Ar_ VPA4 / Invasive Species / HB3 / 0.22 acres fi'..;' :f . =' y •": Appendix C Vegetation Plot Data Appendix C. Vegetation Assessment Data Table 5. Planted Species Summary Common Name Scientific Name Total Stems Planted Water Oak Quercus nigra 5,500 Overcup Oak Quercus lyrata 4,000 Bald Cypress Taxodium distichum 3,500 Sycamore Platanus occidentalis 3,500 Willow Oak Quercus phellos 3,000 Swamp Chestnut Oak Quercus michauxii 2,400 Green Ash Fraxinus pennsylvanica 2,200 Tuhptree Liriodendron tulipifera 2,000 River Birch Betula ni ra 1,600 Buttonbush Cephalanthus occidentalis 1,500 Cherrybark Oak Quercus pagoda 1,100 Blackgum Nyssa sylvatica 600 Silky Dogwood Cornus amomum 500 Total 31,400 Table 6. Vegetation Plot Mitigation Success Summary Plot # Planted Stems/Acre Volunteer Stems/Acre Total Stems/Acre Success Criteria Met? Average Stem Height (ft) 1 890 202 1093 Yes 4.6 2 890 202 1093 Yes 5.2 3 647 202 850 Yes 3.6 4 1133 0 1133 Yes 5.5 5 890 3440 4330 Yes 3.0 6 688 0 688 Yes 7.0 7 809 0 809 Yes 5.4 8 405 202 607 Yes 4.5 9 809 0 809 Yes 7.0 10 647 1214 1862 Yes 4.4 11 364 0 364 Yes 3.6 12 688 40 728 Yes 5.4 13 931 0 931 Yes 5.9 14 567 0 567 Yes 4.1 15 567 0 567 Yes 2.5 16 283 0 283 No 2.7 17 445 0 445 Yes 6.5 R1 647 0 647 Yes 5.0 R2 486 0 486 Yes 4.6 R3 405 0 405 Yes 5.5 Project Avg 660 275 935 Yes 4.9 Appendix C. Vegetation Assessment Data Table 7a. Stem Count Total and Planted by Plot Species Current Plot Data (MY2 2020) Scientific Name Common Name Species Type 05082019-01-0001 05082019-01-0002 05082019-01-0003 05082019-01-0004 05082019-01-0005 05082019-01-0006 05082019-01-0007 05082019-01-0008 05082019-01-0009 05082019-01-0010 Pnol-S[Pall 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 Pnol-S P-all T Betulanigra river birch Tree 21 2 2 4 4 4 7 7 7 3 3 3 5 5 5 Celtis occidentalis common hackberry Tree 2 2 2 Cephalanthus occidentals common buttonbusl Shrub 1 1 1 2 2 2 2 2 2 Corpus amomum silky dogwood Shrub Fraxinus pennsylvanica green ash Tree 2 2 21 1 1 1 1 1 1 1 5 5 5 3 3 3 1 1 1 4 4 4 Liquidambarstyraciflua sweetgum Tree 4 3 5 Liriodendron tulipifera tuliptree Tree 6 6 6 Nyssa sylvatica blackgum Tree Pinustaeda loblolly pine Tree 2 Platanus occidentalis American sycamore Tree 1 1 1 3 3 3 5 5 5 2 2 2 6 6 6 2 2 2 4 4 4 1 1 1 Quercus oak Tree 1 1 1 1 1 1 Quercus alba white oak Tree Quercus lyrata overcup oak Tree 6 6 6 9 9 9 4 4 4 6 6 6 8 8 8 5 5 5 6 6 6 Quercus michauxii swamp chestnut oak Tree 3 3 3 1 1 1 4 4 4 1 1 1 3 3 3 2 2 2 Quercus nigra wateroak Tree 2 2 2 1 1 1 2 2 2 1 1 1 Quercus pagoda cherrybark oak Tree 1 1 1 4 4 4 1 1 1 3 3 3 2 2 2 Quercus phellos willow oak Tree 5 5 6 4 4 4 4 4 4 1 1 1 1 1 1 1 1 1 3 3 3 Rhus glabra smooth sumac shrub 3 Salixnigra blackwillow Tree 85 2 Taxodium distichum bald cypress Tree 1 1 1 1 1 1 3 3 3 4 13 13 13 1 1 1 1 1 1Ulmusalata winged elm Tree g44 30 Stem count size (ares) size (ACRES)i Species countl Stems per ACREI 22 22 27 22 22 27 16 16 21 2 28 22 22 107 17 17 17 20 20 20 10 10 15 20 20 20 16 16 46 1 1 1 1 1 1 1 1 1 1 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 81 81 91 71 71 91 61 61 71 61 61 61 51 51 61 51 51 51 71 71 7 41 41 61 81 8 8 5 5 6 8901 8901 10931 8901 8901 10931 6471 6471 8501 11331 11331 11331 8901 8901 43301 6881 6881 6881 8091 8091 8091 4051 4051 6071 8091 809 809 6471 6471 1862 Current Plot Data (MY2 2020) Annual Means Scientific Name Common Name Species Type 05082019-01-0011 05082019-01-0012 05082019-01-0013 05082019-01-0014 05082019-01-0015 05082019-01-0016 05082019-01-0017 MY2(2020) MY1(2019) MYO(2019) 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 Pnol-S P-all T Pnol-S P-all T Betula nigra river birch Tree 1 1 1 2 2 2 24 24 24 24 24 24 30 30 30 Celtis occidentalis common hackberry Tree 2 2 2 Cephalanthus occidentals common buttonbusl Shrub 5 5 5 1 1 1 11 11 11 5 5 5 5 5 5 Corpus amomum silky dogwood Shrub 1 1 1 Fraxinuspennsylvanica green ash Tree 31 3 31 1 1 11 1 1 11 20 20 20 22 22 22 33 33 33 Liquidambarstyraciflua sweetgum Tree 1 12 18 Liriodendron tulipifera tuliptree Tree 1 1 1 1 7 7 8 7 7 7 26 26 26 Nyssa sylvatica blackgum Tree 1 1 1 Pinustaeda loblolly pine Tree 2 Platanus occidentalis American sycamore Tree 1 1 1 4 4 4 8 8 8 4 4 4 3 3 3 2 2 2 6 6 6 52 52 52 44 44 44 65 65 65 Quercus oak Tree 1 1 1 3 3 3 13 13 13 122 122 122 Quercus alba white oak Tree 1 1 1 1 1 1 2 2 2 Quercus lyrata overcup oak Tree 1 1 1 2 2 2 1 1 1 1 1 1 49 49 49 45 45 45 11 11 11 Quercus michauxii swamp chestnut oak Tree 2 2 2 8 8 8 3 3 3 2 2 2 2 2 2 1 1 1 32 32 32 29 29 29 7 7 7 Quercus nigra wateroak Tree 1 1 1 1 1 1 8 8 8 6 6 6 5 5 5 Quercus pagoda cherrybark oak Tree 2 2 2 1 13 13 13 13 13 13 9 9 9 Quercus phellos willow oak Tree 2 2 2 3 3 3 3 3 3 4 4 4 2 2 2 33 33 34 31 31 31 24 24 24 Rhus glabra smooth sumac shrub 3 Salixnigra blackwillow Tree 87 89 Taxodium distichum bald cypress Tree 2 2 2 3 3 3 3 3 3 32 32 32 21 21 21 28 28 28 Ulmusalata winged elm Tree 30 Stem count size (ares) size (ACRES) Species count Stems per ACRE 9 9 9 17 17 18 23 23 23 14 14 14 14 14 14 7 7 7 ill 11 11 288 288 424 261 261 368 366 366 366 1 1 1 1 1 1 1 17 17 17 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.42 0.42 0.42 7 7 7 7 7 8 6 6 6 4 4 4 6 6 6 5 5 5 4 4 4 14 14 19 13 13 15 13 13 13 364 364 364 688 688 7281 9311 9311 9311 5671 5671 5671 56 5671 5671 2831 2831 2831 4451 4451 445 6861 1009 6211 8761 8711 8711 871 Appendix C. Vegetation Assessment Data Table 7b. Random Vegetation Monitoring Plot Data Random Plot 1 # Species Height (cm) 1 Platanus occidentalis 240 2 Platanus occidentalis 300 3 Cephalnthus occidentalis 180 4 Cephalnthus occidentalis 160 5 Quercus lyrata 165 6 Quercus lyrata 125 7 Quercus lyrata 170 8 Cephalnthus occidentalis 100 9 Cephalnthus occidentalis 155 10 Quercus pagoda 115 11 Fraxinus pennsylvanica 88 12 Fraxinus pennsylvanica 70 13 Quercus lyrata 175 14 Platanus occidentalis 125 15 Quercus lyrata 175 16 Quercus lyrata 118 Stems/Acre 647 Average Height (cm) 154 Average Height (ft) 5.0 Plot Size (m) 25 x 4 Random Plot 2 # Species Height (cm) 1 Platanus occidentalis 205 2 Quercus alba 107 3 Quercus alba 105 4 Fraxinus pennsylvanica 110 5 Quercus michauxii 103 6 Quercus michauxii 100 7 Quercus michauxii 63 8 Platanus occidentalis 105 9 Platanus occidentalis 93 10 Platanus occidentalis 270 11 Betula nigra 205 12 Platanus occidentalis 210 Stems/Acre 486 Average Height (cm) 140 Average Height (ft) 4.6 Plot Size (m) 25 x 4 Random Plot 3 # Species Height (cm) 1 Platanus occidentalis 180 2 Platanus occidentalis 160 3 Fraxinus pennsylvanica 75 4 Fraxinus pennsylvanica 80 5 Betula nigra 300 6 Betula nigra 210 7 Betula nigra 250 8 Cephalanthus occidentalis 70 9 Betula nigra 275 10 Quercus michauxii 90 Stems/Acre 405 Average Height (cm) 169 Average Height (ft) 5.5 Plot Size (m) 25 x 4 Appendix D Stream Measurement and Geomorphology Data Upstream Downstream 129 Hannah Bridge - Reach HB1 - Cross Section 1 - Pool 128 127 c ° m a� w 126 125 ..... — — ..... — — ... — ..... — — ..... — — . .... — — ................ — — — — — — .................. — — — — — — — — ...... — — ..... — — 124 123 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 — — —Approx. Bankfull ...... Low Bank Cross Section 1 (Pool) Base MY1 MY2 MY3 MY5 MY7 MY+ Banktull Elevation t - Based on - 125.87 125.7 125.8 Bankfull Width ft' 9.3 9.4 9.6 Floodprone Width (ft)' >50.7 >49.9 >50 Bankfull Mean Depth ft 1.1 1.1 - Banktull Max Depth (ft)2 1.8 2.0 2.2 Low Bank Elevation ft N/A N/A 125.9 Bankfull Cross Sectional Area (fe)2 10.0 10.0 11.3 Bankfull Width/Depth Ratio 8.7 8.7 - Bankfull Entrenchment Ratio' N/A N/A N/A Bankfull Bank Height Ratio' N/A N/A N/A Upstream Downstream Cross Section 2 (Shallow) Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 125.82 125.9 126.0 Bankfull Width ftl 10.4 12.1 12.7 Floodprone Width LftL1 >50.1 >50.2 >50.2 Bankfull Mean Depth (ft) 1.1 12.1 - BanlfullMaxDe th (ft)2 1.7 1.7 1.7 Low Bank Elevation (ft) 1.7 1.7 126.0 Bankfull Cross Sectional Area (ft2)2 11.8 11.8 11.4 Bankfull Width/Depth Ratio 9.2 12.4 - Bankfull Entrenchment Ratio' >4.8 >4.2 >3.9 Bankfull Bank Height Ratio 1 1.0 1.0 1.0 Upstream Downstream Hannah Bridge - Reach HB1 - Cross Section 3 - Shallow 128 127 126 125 c 0 w 123 122 121 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 — — -Approx. Bankfull Floodprone Area ...... Low Bank Cross Section 3 Shallow 6M=Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) -Based on AB-XSA1 124.23 124.2 124.3 Bankfull Width (ft)1 10.9 12.3 12.7 Floodprone Width (ft)1 >50 >50 >50.1 Bankfull Mean Depth (ft) 1.3 1.1 - Bankfull Max Depth (ft)2 2.0 1.9 2.0 Low Bank Elevation (ft) 2.0 1.8 124.2 Bankfull Cross Sectional Area (fe)2 13.9 13.9 13.8 Bankfull Width/Depth Ratio 8.6 10.9 - Bankfull Entrenchment Ratio i >4.6 >4.1 >4.0 Bankfull Bank Height Ratio 1 1.0 0.9 1.0 Upstream Downstream Hannah Bridge - Reach HB1 - Cross Section 4 - Pool 127 126 125 c ° 124 a� w 123 122 121 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 — — —Approx. Bankfull ...... Low Bank Cross Section 4 Pool Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 124.02 123.9 124.0 Bankfull Width (ft)1 11.1 13.6 11.6 Floodprone Width (ft)1 >50 >50 >50 Banld'ull Mean Depth (ft) 1.3 1.1 - Bankfull Max Depth (ft)2 2.5 2.5 2.5 Low Bank Elevation (ft) N/A N/A 124.0 Bankfull Cross Sectional Area (ft2)2 14.8 14.8 15.3 Bankfull Width/Depth Ratio 8.3 12.6 - Bankfull Entrenchment Ratio i N/A N/A N/A Bankfull Bank Height Ratio' N/A N/A N/A Upstream Downstream Hannah Bridge - Reach HB1 - Cross Section 5 - Pool 125 124 123 c 122 ram• AA• !'�A T�!'� �T�!\ !'�.� �A •T. !'� •!\!'� •� A• a) w 10 PPI 121 120 119 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 — — —Approx. Bankfull ...... Low Bank Cross Section 5 (Pool) Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 122.11 122.0 122.1 Bankfull Width (ft)1 11.3 12.1 15.1 Floodprone Width (ft)1 >50 >50 >50 Banldull Mean Depth (ft) 1.0 0.9 - Bankfull MaxDepth(ft)2 2.1 2.2 2.2 Low Bank Elevation (ft) N/A N/A 122.1 Bankfull Cross Sectional Area (ft 2)2 11.4 11.4 10.8 Bankfull W idth/Depth Ratio 11.3 12.8 - Banldull Entrenchment Ratio i N/A N/A N/A Bankfull Bank Height Ratio i N/A N/A N/A Upstream Downstream 125 Hannah Bridge - Reach HB1 - Cross Section 6 - Shallow 124 123 c ° 122 (p 1 N w 121 JT•T r% R • • r% ev T• 11 09.r.v% • A •T• f7 JT• r% •T• T1 •T• Peer. !7 •T v% ra •T• f1 •T 120 119 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 — — —Approx. Bankfull Floodprone Area ...... Low Bank Cross Section 6 (Shallow) Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 121.72 121.8 121.8 Bankfull Width (ft)i 12.4 15.2 14.1 Floodprone Width (ft)i >50 >50 >50.1 Bankfull Mean Depth (ft) 1.1 0.9 - Bankfull Max Depth (ft)2 1.7 1.7 1.8 Low Bank Elevation ft 1.7 1.4 121.7 Bankfull Cross Sectional Area ft2)2 13.0 13.0 12.3 Bankfull Width/Depth Ratio 11.8 17.9 - Bankfull Entrenchment Ratios >4 >3.3 >3.5 Bankfull Bank Height Ratios 1.0 0.8 1.0 Upstream Downstream 121 Hannah Bridge - Reach HB3 - Cross Section 7 - Pool 120 119 118 ..... ..... ..... ..... ..... .... .................... 0 117 - - - - - - - - - - - - - - - - - _ - - - - - - - - - - - - - - w 116 115 114 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 — — —Approx. Bankfull ...... Low Bank Cross Section 7 Pool Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA 118.31 117.9 117.8 Bankfull Width (ft)1 11.2 10.1 10.0 Floodprone Width (ft)1 >50 >50 >50 Bankfull Mean Depth (ft) 1.7 1.9 - Banldull Max Depth (ft)2 2.4 2.7 3.4 Low Bank Elevation (ft) N/A N/A 118.3 Bankfull Cross Sectional Area (ft 2)2 18.9 18.9 24.7 Bankfull Width/Depth Ratio 6.6 5.4 - Bankfull Entrenchment Ratio i N/A N/A N/A Bankfull Bank Height Ratio' N/A I N/A N/A Upstream Downstream 121 Hannah Bridge - Reach HB3 - Cross Section 8- Shallow 120 119 c ° a� w 118 117 116 115 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 — — —Approx. Bankfull Floodprone Area ...... Low Bank Cross Section 8 Shallow Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA 118.04 118.1 118.2 Bankfull Width (ft)1 11.6 12.6 21.2 Floodprone Width (ft)1 >49.8 >50 >49.9 Bankfull Mean Depth (ft) 1.4 1.2 - Bankfull MaxDepth (ft)2 1.8 1.8 1.9 Low Bank Elevation (ft) 1.8 1.8 118.2 Bankfull Cross Sectional AreaLa 15.7 15.7 15.8 Bankfull Width/Depth Ratio 8.5 10.1 - Bankfull Entrenchment Ratio i >4.3 >4.0 >2.4 Bankfull Bank Height Ratio i 1.0 1.0 1.0 Upstream Downstream 119 Hannah Bridge - Reach HB3 - Cross Section 9 - Shallow 118 117 c ° 116 a� Lu 115 114 113 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 — — —Approx. Bankfull Floodprone Area ...... Low Bank Cross Section 9 Shallow Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA' 115.93 116.0 116.1 Bankfull Width (ft)' 12.1 13.4 14.5 Floodprone Width (ft)' >49.9 >50 >49.9 Bankfull Mean Depth (ft) 1.3 1.2 - Banld'ull Max Depth (ft)2 1.8 1.9 1.9 Low Bank Elevation (ft) 1.8 1.9 116.0 Bankfull Cross Sectional Area (fe)2 15.5 15.5 14.6 Bankfull Width/Depth Ratio 9.4 11.6 - Bankfull Entrenchment Ratio >4.1 >3.7 >3.4 Bankfull Bank Height Ratio' 1.0 1.0 1.0 Upstream Downstream 118 Hannah Bridge - Reach HB3 - Cross Section 10 - Pool 117 116 115 i•J. LJ •1• • LJ Li J.• LJ •J.• JJ 1 A J.• L • • L1 i• • LJ •i• WI L.P L •.L L• W • •J.• LJ •J. c 0 114 w 113 112 111 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 — — —Approx. Bankfull ...... Low Bank Cross Section 10 (Pool) Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 115.82 115.6 115.6 Bankfull Width (ft)' 12.0 10.9 10.4 Floodprone Width (ft)' >50 >50 >50 Bankfull Mean Depth (ft) 1.6 1.7 - BankfullMaxDepth (ft)2 3.3 3.5 3.3 Low Bank Elevation (ft) N/A N/A 115.7 Bankfull Cross Sectional Area (ft2)2 19.1 19.1 20.0 Bankfull Width/Depth Ratio 7.5 6.2 - Bankfull Entrenchment Ratio N/A N/A N/A Bankfull Bank Height Ratio N/A N/A N/A Upstream Downstream Hannah Bridge - Reach HB3 - Cross Section 12 - Shallow 118 117 116 c 0 115 w 114 ..... ... -r —.- — ...... .-. -.. ...— — 113 112 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 — — —Approx. Bankfull Floodprone Area ...... Low Bank Cross Section 12 (Shallow) Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) -Based on AB-XSA' 114.24 114.2 114.5 Bankfull Width (ft)' 11.8 11.8 14.1 Floodprone Width (ft)' >50.7 >50.7 >50.6 Bankfull Mean Depth (ft) 1.1 1.1 - Banld'ullMaxDepth (ft)2 1.5 1.5 1.6 L.ow Bank Elevation (ft) 1.5 1.6 114.4 Bankfull Cross Sectional Area (fe)2 13.3 13.3 12.2 Bankfull Width/Depth Ratio 10.5 10.5 - Banld'ull Entrenchment Ratio >4.3 >4.3 >3.6 Bankfull Bank Height Ratio' 1.0 1.0 1.0 Upstream Downstream 118 Hannah Bridge - Reach HB3 - Cross Section 11 - Pool 117 116 c ° 115 > w 114 — — ... ... ... 1 ... — .. — — .......... — — — — — .. .... .... .... ... ... ... 113 N;�, j 112 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 — — —Approx. Bankfull ...... Low Bank Cross Section 11 (Pool) Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA 114.52 114.5 114.6 Bankfull Width ft i 12.0 12.7 19.3 Floodprone Width ft 1 >50 >50 >50 Bankfull Mean Depth (ft) 1.1 1.0 - Bankfull MaxDe th (11)2 1.8 1.9 1.7 Low Bank Elevation (ft) N/A N/A 114.4 Bankfull Cross Sectional Area (fe)2 13.0 13.0 9.8 Bankfull Width/Depth Ratio 11.1 12.3 - Bankfull Entrenchment Ratio i N/A N/A N/A Bankfull Bank Height Ratio i N/A N/A N/A Upstream Downstream 117 Hannah Bridge - Reach HB3 - Cross Section 13 - Shallow 116 115 c 0 114 w 113 -.--- . . . . ... . . . ---- ... -- .. .-. .. -.- .. .— . .. . ... . . . ... 112 111 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 — — —Approx. Bankfull Floodprone Area ...... Low Bank Cross Section 13 (Shallow) Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA' 113.48 113.5 113.7 Bankfull Width (ft)' 12.5 22.9 18.0 Floodprone Width (ft)' >52.3 >52.6 >52.5 Bankfull Mean Depth (ft) 1.0 0.5 - Bankfull Max Depth (ft)2 1.4 1.5 1.5 Low Bank Elevation (ft) 1.4 1.4 113.5 Bankfull Cross Sectional Area (ft2)2 12.0 12.0 10.4 Bankfull Width/Depth Ratio 13.0 43.6 - Bankfull Entrenchment Ratio' >4.2 >2.3 >2.9 Bankfull Bank Height Ratioll 1.0 1.0 10.9 Upstream Right Bank 117 Hannah Bridge - Reach HB3 - Cross Section 14 - Pool 116 115 114 c 0 - 113 s•s ssv• .&j .Li. w 112 111 110 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 — — —Approx. Bankfull ...... Low Bank Cross Section 14 (Pool) Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA' 113.41 113.4 113.4 Bankfull Width (ft)' 11.1 11.8 13.2 Floodprone Width ft ' >50 >50 >50 Bankfull Mean Depth (ft) 1.3 1.2 - Bankfull Max Depth (ft)2 2.2 2.1 2.3 Low Bank Elevation (ft) N/A N/A 113.5 Bankfull Cross Sectional Area (fe)2 14.0 14.0 15.3 Bankfull Width/Depth Ratio 8.7 9.9 - Bankfull Entrenchment Ratio' N/A N/A N/A Bankfull Bank Height Ratio N/A N/A N/A Upstream Downstream 115 Hannah Bridge - Reach HB4 - Cross Section 15 - Shallow - Enhancement 1 114 113 c ° 112 1 N w 111 Y•Ao LI Y• •YY i-Y -i-Y i• Y YY• •iY iY Yi Yi• 110 109 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 — — —Approx. Bankfull — — Floodprone Area ...... Low Bank Cross Section 15 Shallow Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA1 111.72 111.7 111.6 Bankfull Width (ft)1 15.4 15.3 15.4 Floodprone Width (ft)1 >49.9 >49.9 >49.8 Bankfull Mean Depth (ft) 0.7 0.7 - BankfullMaxDepth (ft)2 1.4 1.4 1.4 Low Bank Elevation (ft) 1.4 1.4 111.7 Bankfull Cross Sectional Area(ft 2)2 11.4 11.4 12.1 Bankfull Width/Depth Ratio 20.8 20.7 - Bankfull Entrenchment Ratio 1 >3.2 >3.2 >3.2 Bankfull Bank Height Ratio 1 1.0 1.0 1.0 Upstream Downstream 115 Hannah Bridge - Reach HB4 - Cross Section 16 - Shallow - Enhancement 1 114 113 c ° a� w 112 111 •-,---, ,---.-. .—.- ..—.--.—...--...- .... ---- ........................ -- ---- ..... . . ... 110 109 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 — — —Approx. Bankfull Floodprone Area ...... Low Bank Cross Section 16 Shallow Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA' 111.30 111.3 111.2 Bankfull Width (ft)' 18.8 19.3 19.0 Floodprone Width (ft)' >37 >37 >50.4 Bankfull Mean Depth (ft) 0.6 0.5 - Bankfull Max Depth (ft)2 0.9 0.8 0.8 Low Bank Elevation (ft) 0.9 0.8 111.1 Bankfull Cross Sectional AreaLL 10.6 10.6 8.1 Bankfull Width/Depth Ratio 33.3 35.4 - Bankfull Entrenchment Ratio 1 >2 >1.9 >2.7 Bankfull Bank Height Ratio' 1.0 1.0 0.8 Upstream Downstream 127 Hannah Bridge - Reach HN - Cross Section 17 - Shallow 126 125 c ° 124 a� E— 123 — — — — — — 122 ..... - ... ..... T. - ....... . .... - ... .. ..... ..... . 121 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 — — —Approx. Bankfull Floodprone Area ...... Low Bank Cross Section 17 Shallow Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA 123.08 123.1 123.1 Bankfull Width (ft)1 5.6 5.7 7.9 Floodprone Width (11)1 >50.2 >50.1 >50.1 Bankfull Mean Depth (ft) 0.5 5.0 - Bankfull Max Depth (11)2 0.9 0.9 0.7 Low Bank Elevation (ft) 0.9 0.7 122.9 Bankfull Cross Sectional Area (fe)2 2.9 2.9 2.1 Bankfull Width/Depth Ratio 10.6 I 11.5 - Bankfull Entrenchment Ratios >9 1 >8.7 >6.3 Bankfull Bank Height Ratios 1.0 0.8 0.8 Upstream Downstream 127 Hannah Bridge - Reach HF1 - Cross Section 18 - Pool 126 125 c ° 124 a� w 123 122 121 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 — — —Approx. Bankfull ...... Low Bank Cross Section 18 Pool Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA 123.05 123.1 123.1 Bankfull Width (ft)i 5.8 5.9 9.6 Floodprone Width (ft)i >50 >50 >50 Bankfull Mean Depth (ft) 0.6 0.5 - Bankfull Max Depth (11)2 1.1 1.2 1.1 Low Bank Elevation (ft) N/A N/A 123.0 Bankfull Cross Sectional Area (fe)2 3.3 3.3 3.1 Bankfull Width/Depth Ratio 10.2 10.9 - Bankfull Entrenchment RatiosI N/A N/A N/A Bankfull Bank Height Ratios I N/A N/A N/A Upstream Downstream 123 Hannah Bridge - Reach TH3 - Cross Section 19 - Shallow 122 121 c ° 120 a� w 119 118 117 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 — — —Approx. Bankfull Floodprone Area ...... Low Bank Cross Section 19 (Shallow) Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSAi 118.89 118.9 118.9 Bankfull Width (ft)i 7.0 7.3 7.9 Floodprone Width (ft)i >42.2 >41.8 >50.1 Bankfull Mean Depth (ft) 0.6 0.6 - Bankfull Max Depth (11)2 0.9 0.9 1.0 Low Bank Elevation (ft) 0.9 1.0 119.0 Bankfull Cross Sectional Area (fe)2 4.3 4.3 6.0 Bankfull Width/Depth Ratio 11.3 12.5 1 - Bankfull Entrenchment Ratios >6 >5.7 >6.4 Bankfull Bank Height Ratios 1.0 1.1 1.2 Upstream Downstream Hannah Bridge - Reach TH3 - Cross Section 20 - Shallow 119 118 117 c ° 116 -- -- — -- w 115 114 113 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 Distance (ft) MYO-2019 MY1-2019 MY2-2020 — — —Approx. Bankfull Floodprone Area ...... Low Bank Cross Section 20 (Shallow) Base MYl MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSAi 115.43 115.3 115.4 Bankfull Width (ft)i 12.7 12.1 12.3 Floodprone Width (ft)i >49.4 >49.8 >49.6 Bankfull Mean Depth (ft) 0.9 0.9 - Bankfull Max Depth (11)2 1.6 1.6 1.8 Low Bank Elevation (ft) 1.6 1.7 115.5 Bankfull Cross Sectional Area (fe)2 10.9 10.9 13.3 Bankfull Width/Depth Ratio 14.9 13.4 1 - Bankfull Entrenchment Ratios >3.9 >4.1 >4.0 Bankfull Bank Height Ratios 1.0 1.1 1.1 Parameter Dimension and Substrate - Shallow Only Bankfull Width (fl Floodprone Width (fl Bankfull Mean Depth (fl 'Bankfull Max Depth fl Bankfull Cross Sectional Area ft` Width/Depth Ratii Entrenchment Rati, 'Bank Height Rati Profile Shallow Length (fl Shallow Slope (ft/fl Pool Length (fl Pool Max depth (fl Pool Spacing (fl Pattern Channel Beltwidth (fl Radius of Curvature (fl Rc:Bankfull width (ft/fl Meander Wavelength (ft Meander Width Ratii ransport parameters Reach Shear Stress (competency) Ib/i Max part size (mm) mobilized at bankfu Stream Power (transport capacity) W/m Additional Reach Parameters Rosgen Classificatioi Bankfull Velocity (fp: Bankfull Discharge (cfE Valley length (fl Channel Thalweg length (fl Sinuosity (fl Water Surface Slope (Channel) (ft/ft Channel slope (ft/fl 3Bankfull Flood lain Area acre: 4% of Reach with Eroding Bank Channel Stability or Habitat Metri Biological or Othe e Table 8. Baseline Stream Data Summary Hannah Bridge Mitigation Site - Reach HB1 Pre -Existing Condition* Reference Reach(es) Data Min Mean Med Max SD n Min Mean Med Max SD --- --- 12.1 --- --- --- 10.8 11.5 11.5 12.2 --- --- --- >50 --- --- --- >50 --- --- >40 --- --- --- 1.0 --- --- 1.3 1.4 1.4 1.4 --- --- --- 2.3 --- --- --- 1.8 1.9 1.9 2.0 --- --- --- 12.2 14.7 15.3 1 15.3 15.8 --- --- 12.1 7.9 8.7 8.7 9.4 --- --- >2.2 >2.2 >2.2 --- -- 1.0 1.0 1.1 1.1 1.1 2 --- 22 --- --- 5 --- --- 23 --- --- --- --- --- --- --- 0.006 --- --- 0.03 --- 3 --- 9.7 --- --- 11.6 --- --- 45.6 --- -- 46.8 --- --- 37.2 --- --- 55.7 --- 19 --- --- 45 --- --- 19 --- --- 57 --- 9 --- 22 --- --- 10 --- --- 28 --- -- 147 --- --- 49 --- --- 170 --- 1 F --- --- 3 7 --- --- 1 R --- --- 5 3 Shaded cells indicate that these will typically not be filled in. * -Reach was split into 4 segments for the purpose of pre-existing data collection. 1 - The distributions for these parameters can include information from both the cross-section measurements and the longitudinal profile. 2 -For projects with a proximal USGS gauge in -line with the project reach (added bankfull verification -rue). 3. Utilizing XS measurement data produce an estimate of the bankfull floodplain area in acres, which should be the area from the top of bank to the toe of the terrace riser/slope. 4 -Proportion of reach exhibiting banks that are eroding based on the visual survey for comparison to monitoring data; 5. Of value/needed only if the n exceeds 3 Design Monitoring Baseline n Min Med Max Min Mean Med Max SD n 2.0 --- 12.2 --- 10.4 11.2 10.9 12.4 1.0 3 2.0 --- >50 --- >50 >50 >50 >50.1 0.1 3 2.0 --- 1.3 --- 1.1 1.2 1.1 1.3 0.1 3 2.0 --- 1.6 --- 1.7 1.8 1.7 2.0 0.2 3 2.0 --- 15.4 11.8 1 12.9 1 13.0 1 13.9 1 1.1 1 3 2.0 --- 9.7 8.6 9.9 9.2 11.8 1.7 3 2.0 >2.2 >4 >4.5 >4.6 >4.8 0.4 3 2.0 1.0 1.0 1.0 1.0 1.0 0.0 3 --- 10 --- 34 2.0 16.0 15.2 32.2 8.2 20 --- 0.006 --- 0.03 0.0001 0.005 0.0027 0.0205 0.006 20 --- 13 --- 29 12.5 25.1 27.7 35.7 8.0 22 --- 39 --- 85 34.2 62.2 56.5 132.8 25.6 22 --- 34 --- 70 34 --- --- 70 --- --- --- 23 --- 42 23 --- --- 42 --- --- --- 90 --- 151 90 --- --- 151 --- --- --- 2.8 --- 5.7 2.8 --- --- 5.7 --- --- Parameter Dimension and Substrate - Shallow Only Bankfull Width (f Floodprone Width (f Bankfull Mean Depth (f 'Bankfull Max Depth f Bankfull Cross Sectional Area ft' Width/Depth Rati Entrenchment Rati 'Bank Height Rati Profile Shallow Length (f Shallow Slope (ft/f Pool Length (f Pool Max depth (f Pool Spacing (f Pattern Channel Beltwidth (f Radius of Curvature (f Rc:Bankfull width (ft/f Meander Wavelength (f Meander Width Rati Max part size (mm) mobilized at bankfu Stream Power (transport capacity) W/m al Reach Parameters Rosgen Classificatioi Bankfull Velocity (fp: Bankfull Discharge (cfE Valley length (fl Channel Thalweg length (fl Sinuosity (fl Water Surface Slope (Channel) (ft/ft Channel slope (ft/fl 3Bankfull Floodplain Area (acre: 4% of Reach with Eroding Bank Channel Stability or Habitat Metri Biological or Othe e Table 8. Baseline Stream Data Summary Hannah Bridge Mitigation Site - Reach HB3 Pre -Existing Condition* Reference Reach(es) Data Min Mean Med Max SD n Min Mean Med Max SD 11.3 14.9 14.9 18.4 --- 2 10.8 11.5 11.5 12.2 --- >50 --- --- >50 --- 2 >50 --- --- >40 0.9 1.1 1.1 1.2 --- 2 1.3 1.4 1.4 1.4 --- 1.7 2.0 2.0 2.3 --- 2 1.8 1.9 1.9 2.0 --- 13.1 14.9 1 14.9 1 16.6 1 2 14.7 15.3 1 15.3 15.8 9.7 15.0 15.0 20.3 2 7.9 8.7 8.7 9.4 >2.2 --- --- >2.2 2 >2.2 >2.2 --- 1.2 --- --- 1.3 2 1.0 1.1 1.1 1.1 --- --- --- --- --- --- --- 5 --- --- 23 --- --- --- --- --- --- --- 0.006 --- --- 0.03 --- --- --- --- --- --- --- 11.6 --- --- 45.6 --- --- --- --- --- --- --- 37.2 --- --- 55.7 --- --- --- --- --- --- --- 19 --- --- 57 --- --- --- --- --- --- --- 10 --- --- 28 --- --- --- --- --- --- --- 49 --- --- 170 --- --- --- --- --- --- --- 1 F, --- ri 4 003 0.0C Shaded cells indicate that these will typically not be filled in. * -Reach was split into 4 segments for the purpose of pre-existing data collection. 1 - The distributions for these parameters can include information from both the cross-section measurements and the longitudinal profile. 2 -For projects with a proximal USGS gauge in -line with the project reach (added bankfull verification -rue). 3. Utilizing XS measurement data produce an estimate of the bankfull floodplain area in acres, which should be the area from the top of bank to the toe of the terrace riser/slope. 4 -Proportion of reach exhibiting banks that are eroding based on the visual survey for comparison to monitoring data; 5. Of value/needed only if the n exceeds 3 Design Monitoring Baseline n Min Med Max Min Mean Med Max SD n 2.0 --- 12.2 --- 11.6 12.0 12.0 12.5 0.4 4 2.0 --- >50 --- >49.8 >50.7 >50.3 >52.3 1.2 4 2.0 --- 1.3 --- 1.0 1.2 1.2 1.4 0.2 4 2.0 --- 1.6 --- 1.4 1.6 1.7 1.8 0.2 4 2.0 --- 15.4 12.0 1 14.1 1 14.4 1 15.7 1 1.8 1 4 2.0 --- 9.7 8.5 10.4 10.0 13.0 1.9 4 2.0 --- >2.2 >4.1 >4.2 >4.3 >4.3 0.1 4 2.0 1.0 1.0 1.0 1.0 1.0 0.0 4 --- 10 --- 34 4.7 18.7 16.4 80.8 14.0 30 --- 0.006 --- 0.03 0.0001 0.0121 0.0098 0.0397 0.0097 30 --- 13 --- 29 7.4 23.8 21.2 50.5 11.6 33 --- 39 --- 85 13.3 52.7 54.8 99.1 18.6 33 --- 34 --- 70 34 --- --- 70 --- --- --- 23 --- 42 23 --- --- 42 --- --- --- 90 --- 151 90 --- --- 151 --- 2.8 --- 5.7 2.8 --- --- 5.7 --- --- Table 9. Cross Section Morphology Data Table Hannah Bridge Cross Section 1 (Pool) Cross Section 2 (Shallow) Cross Section 3 (Shallow) Cross Section 4 (Pool) Cross Section 5 (Pool) Based on fixed baseline cross sectional area* Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA' 125.9 125.7 125.8 125.8 125.9 126.0 124.2 124.2 124.3 124.0 123.9 124.0 122.1 122.0 122.1 Bankfull Width ft' 9.3 9.4 9.6 10.4 12.1 12.7 10.9 12.3 12.7 11.1 13.6 11.6 11.3 12.1 15.1 Floodprone Width (ft)' >50.7 >49.9 >50 >50.1 >50.2 >50.2 >50 >50 >50.1 >50 >50 >50 >50 >50 >50 Bankfull Mean Depth (ft 1.1 1.1 - 1.1 12.1 - 1.3 1.1 - 1.3 1.1 - 1.0 0.9 - Bankfull Max Depth (ft)1.8 2.0 2.2 1.7 1.7 1.7 2.0 .0 2.5 2.5 2.5 2.1 2.2 2.2 Low Bank Elevation (ft) N/A N/A 125.9 1.7 1.7 126.0 2.0 4.2 N/A N/A 124.0 N/A N/A 122.1 Bankfull Cross Sectional Area (ft)2 10.0 10.0 11.3 11.8 11.8 11.4 13.9 3.8 14.8 14.8 15.3 11.4 11.4 10.8 Bankfull Width/Depth Ratio 8.7 8.7 - 9.2 12.4 - 8.6 14.0 - 8.3 12.6 - 11.3 12.8 - Bankfull Entrenchment Ratio' N/A N/A N/A >4.8 >4.2 >3.9 >4.6 N/A N/A N/A N/A N/A N/A Bankfull Bank Height Ratio' N/A N/A N/A 1.0 1.0 1.0 1.0 .0 N/A N/A N/A N/A N/A N/A Cross Section 6 (Shallow) Cross Section 7 (Pool) Cross Section 8 (Shallow) Cross Section 9 (Shallow) Cross Section 10 (Pool) Based on fixed baseline cross sectional area* Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA' 121.7 121.8 121.8 118.3 117.9 117.8 118.0 118.1 118.2 115.9 116.0 116.1 115.8 115.6 115.6 Bankfull Width (ft)' 12.4 15.2 14.1 11.2 10.1 10.0 11.6 12.6 21.2 12.1 13.4 14.5 12.0 10.9 10.4 Floodprone Width ft' >50 >50 >50.1 >50 >50 >50 >49.8 >50 >49.9 >49.9 >50 >49.9 >50 >50 >50 Bankfull Mean Depth (ft) 1.1 0.9 - 1.7 1.9 - 1.4 1.2 - 1.3 1.2 - 1.6 1.7 - Bankfull Max Depth (ft)2 1.7 1.7 1.8 2.4 2.7 3.4 1.8 1.8 1.9 1.8 1.9 1.9 3.3 3.5 3.3 Low Bank Elevation (ft) 1.7 1.4 121.7 N/A N/A 118.3 1.8 1.8 118.2 1.8 1.9 116.0 N/A N/A 115.7 Bankfull Cross Sectional Area ft) z 13.0 13.0 12.3 18.9 18.9 24.7 15.7 15.7 15.8 15.5 15.5 14.6 19.1 19.1 20.0 Bankfull Width/Depth Ratio 11.8 17.9 - 6.6 5.4 - 8.5 10.1 - 9.4 11.6 - 7.5 6.2 - Bankfull Entrenchment Ratio' >4 >3.3 >3.5 N/A N/A N/A >4.3 44.0 >2.4 >4.1 >3.7 >3.4 N/A N/A N/A Bankfull Bank Height Ratio' 1.0 0.8 1.0 N/A N/A N/A 1.0 1.0 1.0 1.0 1.0 1.0 N/A N/A N/A Cross Section 11 (Pool) Cross Section 12 (Shallow) Cross Section 13 (Shallow) Cross Section 14 (Pool) Cross Section 15 (Shallow) Based on fixed baseline cross sectional area* Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA' 114.5 114.5 114.6 114.2 114.2 114.5 113.5 113.5 113.7 113.4 113.4 113.4 111.7 111.7 111.6 Bankfull Width (ft)' 12.0 12.7 19.3 11.8 11.8 14.1 12.5 22.9 18.0 11.1 11.8 13.2 15.4 15.3 15.4 Floodprone Width (ft)' >50 >50 >50 >50.7 >50.7 >50.6 >52.3 >52.6 >52.5 >50 >50 >50 >49.9 >49.9 >49.8 Bankfull Mean Depth (ft) 1.1 1.0 - 1.1 1.1 - 1.0 0.5 - 1.3 1.2 - 0.7 0.7 - Bankfull Max Depth (ft)2 1.8 1.9 1.7 1.5 1.5 1.6 1.4 1.5 1.5 2.2 2.1 2.3 1.4 1.4 1.4 Low Bank Elevation (ft) N/A N/A 114.4 1.5 1.6 114.4 1.4 1.4 113.5 N/A N/A 113.5 1.4 1.4 111.7 Bankfull Cross Sectional Area (ft)2 13.0 13.0 9.8 13.3 13.3 12.2 12.0 12.0 10.4 14.0 14.0 15.3 11.4 11.4 12.1 Bankfull Width/Depth Ratio 11.1 12.3 - 10.5 10.5 - 13.0 43.6 - 8.7 9.9 - 20.8 20.7 - Bankfull Entrenchment Ratio' N/A N/A N/A >4.3 >4.3 >3.6 >4.2 2.3 >2.9 N/A N/A N/A >3.2 >3.2 >3.2 Bankfull Bank Height Ratio' N/A N/A N/A 1.0 1.0 1.0 1.0 1.0 0.9 N/A N/A N/A 1.0 1.0 1.0 Cross Section 16 (Shallow) Cross Section 17 (Shallow) Cross Section 18 (Pool) Cross Section 19 (Shallow) Cross Section 20 (Shallow) Based on fixed baseline cross sectional area* Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Base MY1 MY2 MY3 MY5 MY7 MY+ Bankfull Elevation (ft) - Based on AB-XSA' 111.3 111.3 111.2 123.1 123.1 123.1 123.1 123.1 123.1 118.9 118.9 118.9 115.4 115.3 115.4 Bankfull Width (ft)' 18.8 19.3 19.0 5.6 5.7 7.9 5.8 5.9 9.6 7.0 7.3 7.9 12.7 12.1 12.3 Floodprone Width (ft)' >37 >37 >50.4 >50.2 >50.1 >50.1 >50 >50 >50 >42.2 >41.8 >50.1 >49.4 >49.8 >49.6 Bankfull Mean Depth (ft) 0.6 0.5 - 0.5 5.0 - 0.6 0.5 - 0.6 0.6 - 0.9 0.9 - Bankfull Max Depth (ft)2 0.9 0.8 0.8 0.9 0.9 0.7 1.1 1.2 1.1 0.9 0.9 1.0 1.6 1.6 1.8 Low Bank Elevation (ft) 0.9 0.8 111.1 0.9 0.7 122.9 N/A N/A 123.0 0.9 1.0 119.0 1.6 1.7 115.5 Bankfull Cross Sectional Area (ft)2 10.6 10.6 8.1 2.9 2.9 2.1 3.3 3.3 3.1 4.3 4.3 6.0 10.9 10.9 13.3 Bankfull Width/Depth Ratio 33.3 35.4 - 10.6 11.5 - 10.2 10.9 - 11.3 12.5 - 14.9 13.4 - Bankfull Entrenchment Ratio' >2 >1.9 >2.7 >9 >8.7 >6.3 N/A N/A N/A >6 >5.7 >6.4 >3.9 >4.1 >4.0 Bankfull Bank Height Ratio' 1.0 1.0 0.8 1.0 0.8 0.8 N/A N/A N/A 1.0 1.1 1 1.2 1.0 1.1 1 1.1 Note: Starting in MY2, the parameters denoted with 1 were calculated using the as -built cross sectional area as the basis for adjusting the bankfull elevation and the parameters denoted with 2 were calculated using the current year low top of bank as the bankfull. Appendix E Hydrology Data Table 10. 2020 Rainfall Summary Month Average Normal Limits Four Oaks Station Precipitation 30 Percent 70 Percent January 4.24 3.24 4.93 4.01 February 3.64 2.51 4.34 6.61 March 4.57 3.44 5.33 2.27 April 3.24 1.99 3.92 3.13 May 4.17 2.91 4.96 3.93 June 4.14 2.70 4.97 3.00 July 5.43 3.48 6.53 4.90 August 4.58 3.05 5.49 9.87 September 4.54 2.26 5.55 5.72 October 3.16 1.89 3.81 --- November 2.95 1.86 3.55 --- December 3.05 2.02 3.65 --- Total 47.71 31.35 57.03 43.44 Table 11. Documentation of Geomorphically Significant Flow Events Year Number of Bankfull Events Maximum Bankfull Height (ft) Date of Maximum Bankfull Event Photo Number Stage Recorder HBI MYl 2019 2 0.50 9/5/2019 MYl MY2 2020 5 1.30 8/15/2020 N/A Stage Recorder HB3 MYl 2019 3 0.99 9/6/2019 MYl MY2 2020 8 1.67 2/7/2020 N/A Stage Recorder HB4 MY12019 1 1.75 9/6/2019 N/A MY2 2020 12 3.53 2/7/2020 N/A Year mM Number of Consecutive Flow Days Total Number of Flow Days Flow Gauge TH3 MYl 2019 0 0 MY2 2020 200 250 MY2 Hannah Bridge Flow Gauge TH3 Stream Flow Hydrograph 25 9 20 7 6 � Y 5 � `m SR 7 4 rL 1❑ 'WIF 1101'11� 1W i[plir ,ri s 2 1 o- o J F M A M J J A S Months Ranrai — TM Bed — — — oS wme Bleva�m Table 12. 2020 Max Hydroperiod (Growing Season 18-Mar through 6-Nov, 233 days) Success Criterion 12% Well ID Consecutive Cumulative Occurrences Days Y Hydroperiod (%) Days Y Hydroperiod (%) GW1 7 3 38 16 24 GW2 19 8 75 32 15 GW3 31 13 107 46 13 GW4 82 35 177 76 8 GW5 189 81 189 81 1 GW6 3 1 13 6 12 GW7 8 3 41 17 13 GW8 7 3 45 19 19 GW9 10 4 60 26 21 GW10 13 5 68 29 18 GW11 21 9 97 42 16 RGW1 21 9 74 32 14 RGW2 60 188 81 6 Table 13. Summary of Groundwater Monitoring Results Hannah Bridge Well ID H dro eriod i % ; Success Criteron 12% Year 1 2019 Year 2 2020 Year 3 2021 Year 4 2022 Year 5 2023 Year 6 2024 Year 7 2025 GW1 2 3 GW2 9 8 GW3 18 13 GW4 30 35 GW5 100 81 GW6 2 1 GW7 1 3 GW8 1 3 GW9 1 4 GW10 3 5 GWl1 1 2 9 RGWl 17 9 RGW2 27 26 <5% 1 5-11% 1 >12% 2020 Hannah Bridge GW1 10 12.0 Grow ng Seaso 11.0 0 10.0 9.0 N d 8.0 -10 7.0 v O �i d 6.0 p -20 W L ++ � W 5.0 4.0 a -30 O 3.0 2.0 -40 1.0 0.0 -50 J F M A M J J A S O N D Months -Four Oaks Daily Rainfall -GW1 2020 Hannah Bridge GW2 10 12.0 Growing Season 11.0 0 10.0 9.0 N d 8.0 -10 t� v W i 7.0 v O d 6.0 p -20 W L W '++ � 5.0 ,= 0 4.0 a -30 O ,L^ V 3.0 2.0 -40 LA1.0 III-50 0.0 J F M A M J J A S O N D Months Four Oaks Daily Rainfall -GW2 2020 Hannah Bridge GW3 10 12.0 Growing Seaso 11.0 0 10.0 9.0 N d 8.0 -10 t� .-. �► W i 7.0 v O d 6.0 p -20 W L '++ � 5.0 4.0 a -30 O 3.0 2.0 -40 LA 1.0 L L dj I i i i 0.0 -50 J F M A M J J A S O N D Months Four Oaks Daily Rainfall -GW3 2020 Hannah Bridge GW4 10 12.0 Growing Season 11.0 0 10.0 9.0 N d -10 t� 8.0 �► W i 7.0 v C d 6.0 p -20 W L W '++ � 5.0 0 4.0 a -30 O 3.0 2.0 -40 1.0 0.0 -50 J F M A M J J A S O N D Months Four Oaks Daily Rainfall -GW4 2020 Hannah Bridge GW5 10 12.0 Growing Season 11.0 0 10.0 9.0 N d 8.0 -10 t� �► W i 7.0 v O d 6.0 p -20 W L W '++ � 5.0 0 4.0 a -30 O 3.0 2.0 -40 L 1.0 0.0 -50J J F M A M J J A S O N D Months Four Oaks Daily Rainfall -GW5 2020 Hannah Bridge GW6 10 12.0 Growing Season 11.0 0 10.0 9.0 N d 8.0 -10 t� �► as 7.0 v O d 6.0 p -20 W L '++ � 5.0 4.0 a -30 O ,L^ V 3.0 2.0 -40 1.0 L L 0.0 -50 J F M A M J J A S O N D Months Four Oaks Daily Rainfall -GW6 2020 Hannah Bridge GW7 10 12.0 Growing Season 11.0 0 10.0 9.0 N d 8.0 -10 t� �► as 7.0 v O d 6.0 p -20 W L W '++ � 5.0 0 4.0 a -30 O ,L^ V 3.0 2.0 -40 1.0 0.0 -50 J F M A M J J A S O N D Months Four Oaks Daily Rainfall -GW7 2020 Hannah Bridge GW8 10 12.0 Growing Season 11.0 0 10.0 9.0 N d 8.0 -10 t� �► as i 7.0 v O d 6.0 p -20 W L '++ � 5.0 SOL 4.0 a -30 O ,L^ V 3.0 2.0 -40 1.0 0.0 -50 J F M A M J J A S O N D Months Four Oaks Daily Rainfall -GW8 2020 Hannah Bridge GW9 10 12.0 Growing Season 11.0 0 10.0 9.0 N d 8.0 -10 t� �► as 7.0 v O d 6.0 p -20 W L W '++ � 5.0 0 4.0 a -30 O ,L^ V 3.0 2.0 -40 1.0 LL AJ 0.0 -50 J F M A M J J A S O N D Months Four Oaks Daily Rainfall -GW9 2020 Hannah Bridge GW10 10 12.0 Growing Season 11.0 0 10.0 9.0 N d 8.0 -10r t� �► as i 7.0 v O d 6.0 p -20 W L W '++ � 5.0 4.0 a -30 O ,L^ V 3.0 2.0 -40 1.0 0.0 -50 J F M A M J J A S O N D Months Four Oaks Daily Rainfall -GW10 2020 Hannah Bridge GW11 10 12.0 Growing Season 11.0 0 10.0 RM 9.0 N d 8.0 -10 C— �► — — — — — — — — as 0 7.0 v O E d 6.0 p -20 W L W '++ � 5.0 0 4.0 a -30 O ,L^ V 3.0 2.0 -40 1.0 0.0 -50 J F M A M J J A S O N D Months Four Oaks Daily Rainfall —GW11 2020 Hannah Bridge REF GW1 10 12.0 Growing Season 11.0 0 10.0 9.0 N d 8.0 -10 t� �► as 7.0 v O d 6.0 p -20 W L W '++ � 5.0 0 4.0 a -30 O-001-4 ,L^ V 3.0 2.0 -40 1.0 0.0 -50 J F M A M J J A S O N D Months Four Oaks Daily Rainfall -REF GW1 2020 Hannah Bridge REF GW2 10 12.0 Growing Season 11.0 0 10.0 9.0 N d 8.0 -10 t� �► W 7.0 v O d 6.0 p -20 W L W '++ � 5.0 0 4.0 a -30 O 3.0 2.0 -40 1.0 0.0 -50 J F M A M J J A S O N D Months IIIIIIIIIIIIIIIIIIIIIIIIIIll'our Oaks Daily Rainfall -REF GW2