Loading...
HomeMy WebLinkAbout20072252 Ver 2_Year 3 Monitoring Report_20191127ID#* 20072252 Version* 2 Select Reviewer:* Mac Haupt Initial Review Completed Date 12/02/2019 Mitigation Project Submittal - 11/27/2019 Is this a Prospectus, Technical Proposal or a New Site?* r Yes r No Type of Mitigation Project:* V Stream r Wetlands W Buffer r- Nutrient Offset (Select all that apply) Project Contact Information Contact Name:* LINDSAY CROCKER Project Information ......................................................................................................................................................................... ID#:* 20072252 Existing IDY Project Type: r DMS r Mitigation Bank Project Name: Bowman (Mt. Pleasant Creek) County: Randolph Document Information Email Address:* lindsay.crocker@ncdenr.gov Version: *2 Existing Version Mitigation Document Type:* Mitigation Monitoring Plans File Upload: Bowman _44_MY3_2019.pdf 9.35MB Rease upload only one RDFcf the conplete file that needs to be subnitted... Signature Print Name:* LINDSAY CROCKER Signature:* .,cry. �`��-aE,��• Monitoring Report Year 3 Bowman (Mt. Pleasant Creek Restoration Project) DMS Project Number 44 401: DWR 07-2252v2 404: SAW-2008-01382 Randolph County, North Carolina Prepared by: NCDMS, 1652 Mail Service Center, Raleigh, NC 27699-1652 Monitoring Data Collected: July-October 2019 TABLE OF CONTENTS PROJECT SUMMARY ...................................................................................................................................... 1 GOALS AND OBJECTIVES ............................................................................................................................... 1 DESIGN APPROACH & IMPLEMENTATION .................................................................................................... 1 MONITORING ................................................................................................................................................ 2 SUCCESS CRITERION ...................................................................................................................................... 2 MONITORING YEAR 1 RESULTS ..................................................................................................................... 2 Figure 1. Project Site Vicinity Map ................................................................................................................ 3 Figure 2. Site Asset Map ............................................................................................................................... 4 REFERENCES .................................................................................................................................................. 5 Appendix A – Background Tables Table 1. Project Components and Mitigation Credits ................................................................................... 7 Table 2. Project History ................................................................................................................................. 8 Table 3. Project Contacts .............................................................................................................................. 8 Table 4. Project Information ......................................................................................................................... 9 Appendix B – Visual Assessment Data Table 5. Visual Assessment ......................................................................................................................... 11 CCPV ............................................................................................................................................................ 12 Photo Reference Points .............................................................................................................................. 13 Vegetation Plot Photos ............................................................................................................................... 15 Appendix C – Vegetation Plot Data Table 6. Tree Planting ................................................................................................................................. 17 Table 7. Stem Count Total and Planted by Plot and Species ....................................................................... 17 Appendix D – Stream Measurement and Geomorphology Data Table 8. Bankfull Events .............................................................................................................................. 19 Table 9. Cross-section Morphology Data Table .......................................................................................... 20 Cross-section Graphs .................................................................................................................................. 21 Precipitation Data ....................................................................................................................................... 24 Mt. Pleasant Creek Restoration Project-Bowman Property MY3 PROJECT SUMMARY Project work at the Mt. Pleasant Creek Restoration Project, Bowman Property (“Bowman”) was completed in February 2017, and included construction, planting, invasive treatment, and fence installation. Through this project work, a total of 1,866 linear feet of stream were enhanced or preserved, and 358,604 sf of buffer were protected, enhanced, or restored. The project stream is perennial and drains a 5.2-acre watershed in the Cape Fear River Basin (03030003 8-digit cataloging unit) of Randolph County, North Carolina. The Bowman site has a history of unrestricted livestock access, leading to bank erosion, compaction, and discontinuity between the stream and its associated floodplain. The completed project will reduce sediment inputs from failing banks, reduce nutrients and bacteria entering the stream from livestock and will enhance the forested corridor along the stream floodplain. The project is protected by a 9.61-acre permanent conservation easement, held by the NC Department of Transportation. Bowman is located off Whites Chapel Road, approximately 5 miles southwest of Liberty, North Carolina. The project site is bounded by interspersed pastureland and forested land to the east, forest to the south, pasture and forest to the north, and agricultural land and forest to the west. Bowman is within a parent parcel involved with agricultural production for cattle, chicken houses, goats, and hay pasture. GOALS & OBJECTIVES The 2009 Cape Fear River Basin RBRP identified HUC 03030003020010 (Sandy Creek) as a Targeted Local Watershed, of which the project site is a part (NCEEP 2009). The project goals are in line with the following basin priorities: - Reduce sources of sediment and nutrients by enhancing riparian buffer vegetation, excluding livestock, and enhancing stream and buffer function. The goals for the project are to: - Restore long term stability to exposed banks and reduce susceptibility to scour. - Eliminate stream bacteria and nutrient exposure from animal waste and wallow. - Restore a contiguous riparian buffer that connects to the surrounding forested mature buffer. The project goals will be addressed through the following objectives: - Conduct Enhancement I level stream restoration on 530 linear feet of stream by repairing actively eroding banks and re-establishing the stream pattern where there has been excessive sediment deposition. - Conduct Enhancement II level stream restoration on 1,046 linear feet of stream through a permanent conservation easement and removing cattle access. - Install Preservation on an additional 290 linear feet of stream by putting the stream in a permanent conservation easement. - Riparian buffer restoration, enhancement, and preservation throughout the stream corridor. DESIGN APPROACH & IMPLEMENTATION To implement these objectives, project work was completed in February 2017 per the Mitigation Plan. The as-built and baseline surveys found that the stream was constructed as designed and all structures were installed as planned. Stream work included installation of 7 soil lifts fortified with live willow whips, a ford crossing, and constructed riffle in the Enhancement I credit area. Bio-engineering with live staking, temporary and permanent seeding occurred along all exposed banks, and sloped banks; and transplants were installed where possible. Invasive treatment occurred throughout the entire easement, using a stump herbicide treatment method. The site was constructed as designed. The only modification during construction was the extension of the stone on both sides of the ford crossing. Mt. Pleasant Creek Restoration Project-Bowman Property 1 MY3 On March 9, 2017, 1.23-acres of riparian buffer was planted per the Mitigation Plan specifications. Five species of trees were installed at a density of approximately 600 trees per acre. There were two substitutions from the Mitigation Plan species due to availability and vigor of trees (Nyssa sylvatica and Quercus nigra). Also in March following planting, 3-strand high tensile electric fencing was installed in the crossing area. MONITORING The monitoring components were installed in March 2017 per the Mitigation Plan monitoring specifications. Three permanent cross-sections were established at stations 12+12 (XS2), 15+25 (XS3) and 17+00 (XS4). Two of these cross-sections (12+12 and 17+00) were established at location where previous, pre-construction cross-sections were installed for comparison. The third cross-section (15+25) was placed across the newly constructed riffle. A manual cork crest gauge was installed to record the occurrence of bankfull events. For vegetation monitoring, one permanent and two random 10 m2 vegetation monitoring plots were established. The location of the planted stems relative to the origin within the permanent plot, as well as the species in all plots, was recorded by size. Volunteers were recorded by species and size separately from planted stems. Six permanent photo reference points were established and will be taken annually. SUCCESS CRITERION Stream performance standards are based on 2003 Stream Mitigation Guidelines for determination of channel stability and vegetative success. Stream stability will be documented through 1) annual visual assessment 2) demonstration of bankfull events, 3) stream photo points and 4) monitoring three cross sections (for the Enhancement I section only). A minimum of two bankfull events in separate years must be recorded during the five-year monitoring period to meet success. Vegetative success criterion is in accordance with North Carolina Division of Water Resources Administrative Code 15A NCAC 02B.0295 (NCDWR 2014 Temporary Rule). After five years of monitoring, an average density of 260 woody stems per acre must be surviving and diffuse flow maintained. MONITORING YEAR 3 RESULTS Monitoring occurred on June 4 and October 3, 2019. Vegetation monitoring, visual assessments, and cross- sectional surveys results are summarized in tables below. Although the one permanent plot met success, the two random vegetation fell below success criteria (Table 5). Walnut volunteers continue to thrive on the planted areas of the site, as there are many “parent” walnut trees that are large and mast producing. At this point in the project, the alleopathic properties of the walnut volunteers are becoming evident as they are dominating the planted areas. Based on the MY3 monitoring, some additional planting is warranted for dormant season 2019-20. Invasive treatment occurred in spring and fall in 2019 and continues to be on- going. There were numerous bankfull events during 2019, at least visually documented twice in the monitoring year (Table 7). There were several very large trees lifted into the floodplain, evidence of significant rack and debris, and establishment of some benching. Stream banks area stable. Willow whip live stakes are vigorous and have established a strong bank foothold. Mt. Pleasant Creek Restoration Project-Bowman Property 2 MY3 GUILFORD ÊÚ RANDOLPH ALAMANCE CHATHAM £¤421 LIBERTY LEE MONTGOMERY MOORE ÊÚ STALEY 49 22 FRANKLINVILLE £¤64 RAMSEUR 49 County Boundary ÊÚ Project Site Major Roads Minor Roads Major Rivers Cities and Towns Miles 22 PROJECT SITE VICINITY MAP RANDOLPH COUNTY, NC 0 0.75 1.5 MT. PLEASANT CREEK RESTORATION PROJECT ± C3 D C2 E2 E1 A B A C2 C1 B E2 E1 C3 C3 D C1 Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AEX,Getmapping, Aerogrid, IGN, IGP, swisstopo, and the GIS User Community Site Access Co nservation Easement Ripa ria n B uffe r R estora tion Re storatio n Enhancement Alternative Enhancement Grazing Mount Ple asa nt C reek Enhancement I (530') Enhancement II (10 46') Preservation (290' UT to Mt Pleasant Creek .0 150 30075Feet Bowman Site (Mount Pleasant Creek), DMS ID #44Asset Map REFERENCES NCDENR, Ecosystem Enhancement Program. 2009. Cape Fear River Basin Restoration Priorities 2009. Raleigh, NC. Last accessed 1/2016 at: http://portal.ncdenr.org/c/document_library/get_file?uuid=705d1b58-cb91-451e-aa58- 4ef128b1e5ab&groupId=60329 NCDENR, Ecosystem Enhancement Program. 2014. NCDENR, Ecosystem Enhancement Program. 2014. Stream and Wetland Mitigation Monitoring Guidelines. Last accessed 1/2016 at: http://portal.ncdenr.org/c/document_library/get_file?p_l_id=60409&folderId=18877169 &n ame=DLFE-86604.pdf NCDENR, Ecosystem Enhancement Program. 2014. Stream and Wetland Mitigation Monitoring Guidelines. Last accessed 6/2015 at: http://portal.ncdenr.org/c/document_library/get_file?p_l_id=60409&folderId=18877169 &n ame=DLFE-86606.pdf Mt. Pleasant Creek Restoration Project-Bowman Property 5 MY3 APPENDIX A Background Tables Mt. Pleasant Creek Restoration Project-Bowman Property 6 MY3 Table 1. Project Components and Mitigation Credits Mt. Pleasant Creek Restoration Project-Bowman Property, DMS Project #44 Mitigation Credits STREAM MITIGATION Project Location Existing Length Approach Mitigation Ratio Restoration Length Credits Component (ft) (x: 1) (ft) (SMU) Mount Pleasant Creek 10 + 00 to 11+75 175 Enhancement II 2.5 175 70 11+75 to 14+91 15+11 to 17+25 530 Enhancement I 1.5 530 353 17 + 25 to 25 + 96 871 Enhancement II 2.5 871 348 25 + 96 to 28 + 86 290 Preservation 5 290 58 RIPARIAN BUFFER MITIGATION: Randleman Lake Water Supply Watershed Project Component Proximity to TOB Existing Area Approach Mitigation Ratio Eligible Restoration Credits (ft) (sqft) (x: 1) Area (sqft) (BMU) A 0-100 16,404 Restoration 1 16,404 16,404 E1 0-100 5,222 Restoration 1 5,222 5,222 E1 100-200 3,091 Restoration 2 3,091 1,546 E2 0-100 7,617 Restoration 1 7,617 7,617 E2 100-200 5,140 Restoration 2 5,140 2,570 B 0-100 19,982 Enhancement 2 19,982 9,991 B 100-200 6,611 Enhancement 4 6,611 1,653 C1, C2, C3 & D 0-100 246,962 Alt. Enhancement 2 246,962 123,481 C1, C2, C3 & D* 100-200 47,575 Alt. Enhancement 4 35,860 8,965 SUM 358,604 346,889 177,448 SUBTOTAL 0-100 Restoration 1 29,243 29,243 SUBTOTAL 100-200 Restoration 2 8,231 4,116 SUBTOTAL 0-100 Enhancement 2 266,944 133,472 SUBTOTAL 100-200 Enhancement 4 42,471 10,618 *Area greater than 100' from TOB must be no greater than 10% of total mitigation. Eligible area was reduced from Mitigation plan to reflect this. Ratios taken from Temporary Rule 15A NCAC 02B .0295 (i) and (m) as prescribed in 3/1/2016 DWR Viability Letter. All Stream on Project Site has greater than 30' buffer throughout project. Alt. Enhancement for grazing (m)(2)(F) is proven through project documentation of unrestricted livestock access and attesting landowner letter. Mt. Pleasant Creek Restoration Project-Bowman Property 7 MY3 Stream Riparian Buffer Type R RE R E Size (ft/sf) 1,576 290 37,474 321,130 Credits (SMU/BMU) 772 58 33,359 144,090 TOTAL CREDITS 830 177,448 Table 2. Project Activity & Reporting History Mt. Pleasant Creek Restoration Project-Bowman Property, DMS Project #44 Activity or Report Data Collection Complete Actual Completion or Delivery Mitigation Plan March 16 Final Design - Construction Plans June 16 Construction & Invasive Trtmt Feb 17 Planting March 17 Baseline Monitoring/Report March 17 April 17 Invasive Trtmt All Fall & Spring Year 1 Monitoring October 9, 2017 November 17 Year 2 Monitoring July 23 & October 23, 2018 November 18 Year 3 Monitoring June 4 & October 3, 2019 November 19 Table 3. Project Contacts Mt. Pleasant Creek Restoration Project-Bowman Property, DMS Project #44 Design Firm KCI Associates of North Carolina, PC 4505 Falls of Neuse Road, Suite 400 Raleigh, NC 27609 Contact: Mr. Tim Morris Phone: (919) 278-2512 Fax: (919) 783-9266 Construction Contractor Cole Land and Timber, LLC PO Box 97 Southmont, NC 27351 Contact: Brooks Cole Phone: (336)239-4039 Invasive Treatment Contractor Bruton Natural Systems, Inc. (Initial) P.O. Box 1197 Fremont, NC 27830 Contact: Charlie Bruton Phone: (919) 242-6555 Planting Contractor Carolina Silvics (Long-term Invasive Treatment) 1600 Olive Chapel Rd, Suite 232 Apex, NC 27502 Contact: Mary Margaret McKenney Phone: (252) 482-8491 Monitoring Performers MY0 KCI Associates of North Carolina, PC (Spiller) MY1-5 DMS (Crocker, Dow) Mt. Pleasant Creek Restoration Project-Bowman Property 8 MY3 Table 4. Project Information Mt. Pleasant Creek Restoration Project-Bowman Property, DMS Project #44 Project Name Mt. Pleasant Creek Restoration Project County Randolph County Project Area (acres) 9.61 acres Project Coordinates (lat. and long.) 35.7938° N, - 79.6363° W Project Watershed Summary Information Physiographic Province Piedmont River Basin Cape Fear USGS Hydrologic Unit 8-digit 03030003 USGS Hydrologic Unit 14-digit 03030003020010 DWQ Sub-basin 03-06-09 Project Drainage Area (acres) 3,354 acres Project Drainage Area Percentage of Impervious Area 1% CGIA Land Use Classification Piedmont Alluvial Forest 21% (3.4 ac), Dry-Mesic-Oak-Hickory Forest 42% (6.6 ac), Pasture/Disturbed Community 37% (5.8 ac) Existing Reach Summary Information Parameters Mt. Pleasant Creek UT to Mt. Pleasant Creek Length of reach (linear feet) 1,866 236 Valley classification 3,354 acres 33 acres Drainage area (acres) WS-III WS-III NCDWQ Water Quality Classification C4/1 B4/1 Morphological Description (stream type) Stage VI N/A Evolutionary trend Georgeville silt loam Georgeville silt loam Mapped Soil Series Well drained Well drained Drainage class Non-hydric Non-hydric Soil Hydric status 0.7% 0-2% Slope Zone AE Zone AE FEMA classification Piedmont Alluvial Forest Piedmont Alluvial Forest Existing vegetation community 5% 5% Percent composition of exotic invasive vegetation Regulatory Considerations Regulation Applicable? Resolved? Supporting Documentation Waters of the United States – Section 404 Yes Yes NWP 27 Waters of the United States – Section 401 Yes Yes NWP 27 Endangered Species Act No N/A N/A Historic Preservation Act No N/A N/A Coastal Zone Management Act (CZMA)/ Coastal Area Management Act (CAMA) No N/A N/A FEMA Floodplain Compliance Yes Yes N/A Essential Fisheries Habitat No N/A N/A Mt. Pleasant Creek Restoration Project-Bowman Property 9 MY3 APPENDIX B Visual Assessment Data Mt. Pleasant Creek Restoration Project-Bowman Property 10 MY3 Mt. Pleasant Creek Restoration Project-Bowman Property 11 MY3 Table 5 Visual Assessment Stream Stability Bank Scoured/Eroding Bank lacking vegetative cover resulting simply from poor growth and/or scour and erosion 2 95 100%0 0 100% Undercut Banks undercut/overhanging to the extent that mass wasting appears likely. Does NOT include undercuts that are modest, appear sustainable and are providing habitat. 1 100 100%0 0 100% Mass Wasting Bank slumping, calving, or collapse 0 0 100%0 0 100% 3 195 100%0 0 100% Engineered Structures Overall Integrity Structures physically intact with no dislodged boulders or logs.7 7 100% Grade Control Grade control structures exhibiting maintenance of grade across the sill. 0 0 N/A Piping Structures lacking any substantial flow underneath sills or arms.0 0 N/A Bank Protection Bank erosion within the structures extent of influence does not exceed 15%. (See guidance for this table in EEP monitoring guidance document) 7 7 100% Habitat Pool forming structures maintaining ~ Max Pool Depth : Mean Bankfull Depth ratio > 1.6 Rootwads/logs providing some cover at base- flow. 0 0 N/A Vegetative Condition Planted Acreage 1.23 Bare Areas Very limited cover of both woody and herbaceous material.0.1 acres Pattern and Color 0 0.00 0.0% Low Stem Density Areas Woody stem densities clearly below target levels based on MY3, 4, or 5 stem count criteria. 0.1 acres Pattern and Color 0 0.00 0.0% 0 0.00 0.0% Areas of Poor Growth Rates or Vigor Areas with woody stems of a size class that are obviously small given the monitoring year.0.25 acres Pattern and Color 0 0.00 0.0% 0 0.00 0.0% Invasive Areas of Concern4 Areas or points (if too small to render as polygons at map scale).1000 SF Pattern and Color 0 0.00 0.0% Easement Encroachment Areas3 Areas or points (if too small to render as polygons at map scale).none Pattern and Color 0 0.00 0.0% Combined Acreage % of Planted Acreage Total Cumulative Total Vegetation Category Definitions Mapping Threshold CCPV Depiction Number of Polygons Totals Amount of Unstable Footage % Stable, Performing as Intended Number with Stabilizing Woody Footage with Stabilizing Woody Adjusted % for Woody Vegetation Major Channel Category Channel Sub-Category Metric Number Stable, Performing Total Number in As-built Number of Unstable Segments C3 C3 C3 C3 E2 E2E2 E2 B PP #1 PP #2 PP #3 PP #4PP #5 PP #6 X S 3 XS 4X S 2 Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CN ES/Airbus DS, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, swisstopo, and the GIS User Community Rest oration Type Alternate Enhanceme nt-Grazing Enhancement Re storation MY3 Rand om Vegetation Plots Areas of Bank Concern Vegetatio n Plot Photo Poin ts Cross-Sections Site Acce ss Co nservation Easement Mount Ple asa nt C reek Enhancement I (530') Enhancement II (1 046') Preserva tion (290') UT to Mt Pleasant Creek .0 150 30075Feet Bowman Site (Mount Pleasant Creek), DMS ID #44 Current Condition Plan View Photo points by Monitoring Year MY0: 3/30/2017 MY1: 11/9/2017 MY2:7/1/2019 MY3: 6/4/2019 PP1 PP2 PP3 Mt. Pleasant Creek Restoration Project-Bowman Property 12 MY3 PP4 PP5 PP6 Mt. Pleasant Creek Restoration Project-Bowman Property 13 MY3 Other Photos 6/4/19. Bankfull debris deposited in stream. Mt. Pleasant Creek Restoration Project-Bowman Property 14 MY3 6/4/2019. Cork indicating stream flow reached 16” above bankfull flow (bankfull is at 24”). 6/4/2019. Large and small woody debris from bankfull events floated onto the floodplain. Mt. Pleasant Creek Restoration Project-Bowman Property 15 M3 APPENDIX C Vegetation Plot Data Mt. Pleasant Creek Restoration Project-Bowman Property 16 MY3 Table 6. Tree Planting Mt. Pleasant Creek Restoration Project-Bowman Property, DMS Project #44 Species Quantity Type Nursery Cornus ammomum 200 tubelings Mellow Marsh Farm Liriodendron tulipifera 200 bare roots Superior Trees Nyssa sylvatica 200 bare roots Superior Trees Platanus occidentalis 40 tubelings Mellow Marsh Farm Quercus nigra 200 bare roots Superior Trees Mt. Pleasant Creek Restoration Project-Bowman Property 17 MY3 Species Planted Total Planted Total Planted Total Planted Total Planted Total Planted Total Planted Total American Sycamore (Platanus occidentalis )2 2 1 1 18 18 6 6 3 3 3 3 Blackgum (Nyssa sylvatica )2 2 3 3 9 9 4 4 15 15 5 5 Silky dogwood (Cornus amomum )2 2 13 13 14 14 11 11 2 2 Tulip Poplar (Liriodendron tulipifera )2 2 12 12 11 11 9 9 2 2 Water Oak (Quercus nigra )2 2 14 14 7 7 1 1 2 2 Black Walnut (Juglans nigra )3 2 1 1 6 5 Persimmon (Diospyros virginiana )1 2 1 Green Ash (Fraxinus pennsylvanica )1 1 1 Stem count 6 11 3 5 5 5 66 67 42 43 39 48 14 21 Number of plots 3 size (acres) Species count 5 8 4 5 3 4 5 6 5 6 5 8 5 8 Stems per ACRE 240 440 120 200 200 200 890 904 560 573 520 640 187 280 Meets Success Criteria Below Success Criteria 3 0.025 0.025 0.025 0.075 3 0.075 3 0.075 1 1 1 0.075 Table 7. Stem Count by Plot and Species Bowman (Mt. Pleasant Creek), DMS Project #44 Current Plot Data (MY3 2019)Annual Means Plot P1 Plot T1 Plot T2 MY3 (2019) Annual Means MY0 (2017) Annual Means MY1 (2017) Annual Means MY2 (2018) APPENDIX D Stream Measurement and Geomorphology Data Mt. Pleasant Creek Restoration Project-Bowman Property 18 MY3 Table 8. Bankfull Events Bowman (Mount Pleasant Creek, DMS Project #44 Date of Bankfull Event Evidence 5/25/2017 Rack, sorting in the bed, deposition on banks 6/27/2017 Rack, sorting in the bed, deposition on banks, large logs moved in the stream and floodplain 7/16/2018 Rack and debris on stream banks (possibly below bankfull line) 10/23/2018 Large debris, rack lines in floodplain and on bankful benches 4/13/2019 Large debris, rack lines in floodplain, development of in-stream sediment bars 6/4/2019 Large debris in floodplain, cork evidence of flow above bankfull Bankfull Pictures Overbank sediment deposition, XS2 6/4/2019 Mt. Pleasant Creek Restoration Project-Bowman Property 19 MY3 Table 9. Cross-Section Morphology Data Tables Bowman (Mount Pleasant Creek), DMS Project #44 Dimension and Substrate Cross-Section 2 (Pool), Station 12+12 Cross-Section 3 (Riffle), Station 15+25 Based on fixed baseline elevation Pre Base MY1 MY2 MY3 MY4 MY5 Base MY1 MY2 MY3 MY4 MY5 MY+ Bankfull Width (ft) 30.5 32.1 32.1 31.8 31.0 46.7 47.0 47.5 48.0 Floodprone Width (ft) - - - - - >100 >100 >100 >100 Bankfull Mean Depth (ft) 2.1 2.5 2.3 2.0 1.8 2.9 2.8 2.9 2.6 Bankfull Max Depth (ft) 3 3.7 3.6 3.5 3.1 4.8 4.9 4.9 4.7 Bankfull Cross-Sectional Area (ft2) 64.5 80.4 73.7 64.7 55.6 136.5 133.3 135.7 127.2 Bankfull Width/Depth Ratio - - - - - 16.0 16.6 16.6 18.1 Bankfull Entrenchment Ratio - - - - - 2.0 2.1 2.1 2.1 Bankfull Bank Height Ratio - - - - - 1.0 1.0 1.0 1.0 Cross-Section 4 (Riffle), Station 17+25 Based on fixed baseline elevation Pre Base MY1 MY2 MY3 MY4 MY5 Bankfull Width (ft) 28 37.4 40.0 41.0 40.0 Floodprone Width (ft) >100 >100 >100 >100 >100 Bankfull Mean Depth (ft) 3 2.9 2.8 2.5 2.5 Bankfull Max Depth (ft) 3.9 4.2 4.2 4.1 4.1 Bankfull Cross-Sectional Area (ft2) 83.5 109.5 111.1 102.0 99.6 Bankfull Width/Depth Ratio 9.4 12.8 14.4 16.5 16.1 Bankfull Entrenchment Ratio 1.1 3.3 3.1 3.0 3.1 Bankfull Bank Height Ratio 1.4 1.1 1.1 0.8 1.1 Mt. Pleasant Creek Restoration Project-Bowman Property 20 MY3 Mt. Pleasant Creek Restoration Project-Bowman Property 21 MY3 536 537 538 539 540 541 542 543 544 10.00 20.00 30.00 40.00 50.00 60.00 70.00 80.00Elevation(ft)Bankfull MY0 MY1 MY2 MY3 Bowman Site, Cape Fear River BasinX2, Pool Mt. Pleasant Creek Restoration Project-Bowman Property 22 MY 3 536 537 538 539 540 541 542 543 544 10.00 20.00 30.00 40.00 50.00 60.00 70.00 80.00Elevation(ft)Bankfull MY0 MY1 MY2 MY3 Bowman Site, Cape Fear River BasinXS3 Riffle Mt. Pleasant Creek Restoration Project-Bowman Property 23 MY 3 535 536 537 538 539 540 541 542 543 544 0.00 10.00 20.00 30.00 40.00 50.00 60.00 70.00Elevation(ft)Bankfull MY0 MY1 MY2 MY3 Bowman Site, Cape Fear River BasinX4, Riffle • Historic and Observed Data from Randleman, NC Station AgACIS Mt. Pleasant Creek Restoration Project-Bowman Property 24 MY 3 0 1 2 3 4 5 6 7 8 9 JANUARY FEBRUARY MARCH APRIL MAY JUNE JULY AUGUST SEPTEMBER OCTOBER NOVEMBERRainfall (in)2019 Monthly Precipitation 2019 Rainfall Average 30th Percentile 70th Percentile