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Home My WebLink AboutBarrow East Lagoon Closure Plan Pt2W r to L L cu cu CD 0 a N N C) N O N N C O 0 3 C o Zc E E o c .> o Ua C Z >' J C v m c 0 D E c p a o C N c� W y k c =gym ;ts U m E �av c o m oS°7Ea E ai x o E UZ 0: :DWU N p m U 3 USDA United States Agrriculturet of Northampton County, North Carolina Farm 5348 Tract 1934 2023 Program Year Page Cropland Total 101 28 acres Map Created October 20, 2022 Base Image Layer flown in 2020 Common Land Unit Cropland Non -Cropland OTract Boundary Wetland Determination Identifiers • Restricted Use p Limited Restrictions Exempt from Conservation Compliance Provisions ucer and/or the NAIP imagery The producer „ users reliance on this data oulsule FSA Programs Weiland denhfiers do not represent the size, shape, or specific determination of the area Refer to your original determination (CPA-020 and attached maps) for exact boundaries and determinations or contact NRCS USDA United States Departgrriculturet of Northampton County, North Carolina Farm 5348 Tract 1931 2023 Program Year Page Cropland Total 35 1 acres Map Created October 20. 2022 Base Image Layer flown in 2020 Common Land Unit Cropland Non -Cropland Tract Boundary Wetland Determination Identifiers 0 Restricted Use p Limited Restrictions Exempt from Conservation Compliance Provisions ucer and/or the NAIP imagery The producer accepts Ine .ara as is- an, assumes an nsxs associate. win rs use Ine U6.. Farm Service Agency assumes no responsibility for actual or consequential damage incurred as a resuh of any users reliance on this data outside FSA Programs. wetlantl identifiers do not represent the size. shape or specific determination of the area Refer to your ong final determination (CPA-026 and attached maps) for exact boundaries and determinations or contact NRCS USDA United States am Departgrriculturet or Northampton County, North Carolina Farm 5347 Tract 6494 2023 Program Year Page Cropland Total 119 29 acres Map Created 0-tober 20 2022 Base Image Layer flown in 2020 Common Land Unit Cropland Non -Cropland Tract Boundary Wetland Determination Identifiers 0 Restricted Use p Limited Restrictions Exempt from Conservation Compliance Provisions ucer andlof the NAIP imagery The producer aacepu me uata as rs ana assumes an nsxs associate. corm ns use t ne USDA Farm ServiceAgency assumes no resp onsibdily for actual or consequential damage incurred as a resuh of any users reliance on this data outside FSA Programs Wetland identifiers do not represent the size shape or specificdetemn ination of the area Refer to your original determ nation (CPA-026 and attached maps) for exact boundaries and determinations or contact NRCS USDA United States g°l��ltum Northampton County, North Carolina Farm 5347 Tract 6495 2023 Program Year CLU Acres HEL Crop 4 715 HEL 8 1.93 NHEL 11 1 12 NHEL 12 79 NHEL 13 1776 UHEL Noncro land 14 1.83 UHEL Noncro land 15 114.43 UHEL Noncro land Page Cropland Total 14 12 acres Map Created October 20 2022 Base Image Layer flown in 2020 Common Land Unit Cropland Non -Cropland L�3Tracl Boundary Wetland Determination Identifier: rj Restricted Use p Limited Restrictions Exempt from Conservation Compliance Provisions ucer andfor the NAIP imagery. The producer = v�= '��==a�=auu aesu,-,=s a. nsRs ass°uare° corm ns use. i ne usuA farm wrote Agency assumes no responsD•Idy for actual or consequential damage incurred as a result of any users reliance on this data outside FSA Programs Wetland identified rs o not represent the size, shape, or specific determination of the area Refer to your original determination (CPA-026 and attached maps) forexact boundaries and determinations or contact NRCS USDA United States Depart grrleulumt of Northampton County, North Carolina Farm 4955 Tract 226 2023 Program Year Page Cropland Total 81 16 acres Map Created October 20 2022 Base Image Layer flown in 2020 Common Land Unit Cropland Non -Cropland [tract Boundary Wetland Determination Identifiers 10 Restricted Use J Limited Restrictions Exempt from Conservation Compliance Provisions ucer and/or the NAIP imagery The producer � r••� .��_ �a.a a= a� ,,,�, essouareu wan ns use me u o, rarm service agency assumes no responsiblldy for actual or consequential damage incurred as a resuh of any users reliance on this data outside FSA Programs Wetlantl itlentiriers do not represent the size, shape, or specilic determination of the area Refer to your original determination (CPA-026 and attached maps) forexact boundaries and determinations or contact NRCS _USDA United States _�— Department of Agriculture Northampton County, North Carolina Agriculture Farm 4955 Tract 225 2023 Program Year CLU Acres I HEL Crop 1 14 68 NHEL 2 26 6 NHEL 3 54.2 1 UHEL I Noncrooland Page Cropland Total 41 28 acres Map Created October 20, 2022 Base Image Layer flown in 2020 Common Land Unit Cropland Non -Cropland Tract Boundary Wetland Determination Identifiers • Restricted Use d Landed Restrictions Exempt from Conservation Compliance Provis ons 'ucer andw the NAIP anagery The producer o N�>.��_ _> �> ens ess> a.. nsxs assaumea wnn ns use me usuA varm service Agency assumes no responsibctay for actual or consequential damage incurred as a result of any use fs reliance on this data outside FSA Programs Welland 'genliriers do not represent the size, shape or specific determination of the area Refer to your original determination (CPA-026 and attached maps) for exact boundaries and deternmations or contact NRCS hwoow E�►ST �p�e.v ZO�GS -r-6y9r USDA United Slates AAggpeult re Northampton County, North Carolina Farm 5347 Tract 6494 2023 Program Year Page Cropland Total: 119.29 acres Map Created October 20 2022 Base Image Layer flown in 2020 Common Land Unit r Cropland Non -Cropland Tract Boundary Wetland Determination Identifiers Restricted Use 0 Limited Restrictions Exempt from Conservatior. Compliance Provis ons USDA FSA maps are for FSA Program administration only This map does not represent a legal Surveyor reflect equal ownership; rather it depicts the information provided directly from the producer and/or the NAIP imagery The producer accepts the data'as te' and assumes all risks associated with its use The USDA Farm Service Agency assumes no responsbilhy for actual or consequential damage incurred as a result of any users reliance on this data outside FSA Programs Welland Ident.rers do not represent the size, shape, or specific determination of the area Refer to your original determination (CPA•026 and attached maps) for exact boundaries and determinations or contact NRCS joof_�00-T- j644e%__ --)Pie (M V r q ono ca Jeap.t7 3 CA P;e to Z owes Two ► 93Y USDA United States DepAgriculture Northampton County, North Carolina Farm 5348 Tract 1934 2023 Program Year age Cropland Total: 101.28 acres Map Created October 20. 2022 ase Image Layer flown In 2020 Common Land Unit Cropland i. Non -Cropland Tract Boundary - Wetland Determination Identifiers • Restricted Use V Limited Restrictions r Exempt from Conservation Compliance Provisions USDA FSA maps are for FSA Program admintslralion only This map does not represent a legal survey or mflect actual ownership, rather it depicts the information provided directlyfrom the producer and/or the NAIP imagery The producer accepts the data'as is' and assumes all risks associated with Its use The USDA Farm Service Agency assumes no responsibility for actual or consequential damage Incurred as a result of any user's reliance on this data outside FSA Programs Welland identifiers do not represent the size shape. or specific determination of the area Refer to your original determination (CPA-026 and attached maps) for exact boundaries and determinations or contact NRCS aN q w•o w t �4'f'�t�• 2��1 CS USDA United States Department of Northampton County, North Carolina 17,50/3a0'-`Karm 4955 Tract 226 202 grogram Year CLU Acres HEIL ICrop 1 47.56 NHEL 2 2.84 3 2.56 4 1.27 5 2.34 6 1.09 MNHEL 7 11.75 8 11.75 9 2.84 10 1.29 11 106.19 UHEL�Noncropland 12 017 UHEL13 0.59 UHEL Page Cropland Total: 81.16 acres Map Created October 20 2022 Base Image Layer flown In 2020 Common Land Unit Cropland Non -Cropland =Tract Boundary Wetland Determination Identifiers 0 Restricted Use p Limited Restrictions Exempt from Conservation Compliance Provisions n _ _ _ :er and/or the NAIP imagery The pr_ducer Welland identifiers do not represent the size shape, or specific determutation of the area Refer to your original determ ation'(CPAr026 and attached maps) damage for bou dare s and det mtinations or contact NRCS data outside FSA Programs k k X 2u T'T e" ZO,j C • W �1` �0�� I allN Q CmAvW' ea) A IcA IS 41ST USDA United States ba Deprtt of grriculture Northampton County, North Carolina Farm 5348 Tract 1931 2023 Program Year Page Cropland Total 35 1 acres Map Created October 20 2022 Base Image Layer flown in 2020 Common Land Unit Cropland Non -Cropland Tract Boundary Wetland Determination Identifiers Restricted Use Limited Restrict ons Exempt from Conservation Compliance Provisions :er and/or the NAIP imagery The producer - -- -- -- -- ------------- — --------•-- �••• •� �.� „�o — r+.rrrr °erv—gency assumes no responsibility for actual or consequential damage Incurred as a result of any users reliance on this data outside FSA Programs Wetland identifiers do not represent the size shape, or specific determination of the area Refer to your original determination (CPA-026 and attached maps) for exact boundaries and del ermnations or contact NRCS x x )C x a s '..PM� ::3 u T'-'-e,- Za A es am A &AJ7, NO 94% %W a a 40 C's USDA United States "ran Z Zag AicutureAgriculture Northampton County, North Carolina Farm 4955 Tract 225 2023 Program Year CLU Acres I HE L Crop 1 14.68I NHEL 2 28.6 NHEL 3 54.2 UHEL Noncro land Page Cropland Total 41 28 acres Map Created October 20 2022 Base Image Layer flown in 2020 Common Land Unit Cropland Non -Cropland "Tract Boundary Wetland Determination Identifiers Restricted Use 17 Limited Restrictions Exempt from Conservation Compliance Provisions cer and/or the NA IP imagery The producer -- -- - -• - „. ,., �,� ,� w�� ra„r, ervrce Agency assumes no responsibility for actual or consequential damage incurred as a result of any users reliance on this data out, de PSA Programs WetWnd identifiers do not represent the size, shape, or specific determination of the area Refer to your original determination (CPA-026 and attached maps) for exact boundaries and determinations or conlact NRCS 'iR ow 67As T tj c> lioz4.. za o4 e s T e,) ( 9s USDA United States Ma grriculturet of Northampton County, North Carolina Farm 5347 Tract 6495 2023 Program Year CLU Acres HEL I Crop 4 715 HEL 8 1.93 NHEL 11 1.12 NHEL 12 3.92 NHEL 13 17.76 UHEL Noncro land 14 1.83 UHEL Noncro land 15 14.43 UHEL Nor,r.pland Page Cropland Total. 14.12 acres Map Created October 20. 2022 Base Image Layer flown in 2020 Common Land Unit Cropland Non -Cropland 'Tract Boundary Wetland Determination Identifiers Restricted Use 0 Limited Restrictions Exempt from Conservat on Compliance Provisions :er and or the NAIP imagery The producer -_--,---_-..-_ .._,,,,,,eyn ,ncum,o as a resun 01 any users reliance on this data outside FSA Programs vyegand identifiers do not represent the size, shape, or specil c determination of the area Refer to your original determination (CPA-026 and attached maps) for exact boundaries and determinations or contact NRCS LAGOON CLOSURE PIPE SPILLWAY DESIGN PRODUCER: Jimmy Barrow - East Lagoon COUNTY: _ Northampton Designed By: Joy Sherrod Checked By: Chris Smith Date: 2/27/2023 The waste effluent in the lagoon, including sludge, Is to be agitated and removed. The waste slurry is to be land applied on crop fields at agronomic rates. The waste discharge pipes from the swine buildings to the lagoon will be removed or filled with concrete, and the lagoon used as a freshwater pond. Since the depth of the water impounded against the embankment at the auxiliary will be 3 feet or more above the lowest original ground elevation, the "new" pond will require an auxiliary spillway (either a pipe or open channel) and must meet NRCS CPS 378, Pond practice standard. The spillway must be sized for the larger design storm event shown in Table 2 and Table 5. Water surface (acres): 0.65 Drainage area Including top of embankment (acres). 0.85 Effective embankment height (ft.). <10' Depth from lagoon bottom to top embankment (1t): 12.2 Detention storage (ac ft): 7.9 Depth from lagoon bottom to spillway (ft.): 9.6 Based on CPS 378 Table 2, the principle spillway will be designed for a storm event equal to: 1 year Based on CPS 378 Table 5, the auxiliary spillway will be designed for a storm event equal to: 10 year Type of spillway to be installed? pipe spillway Table 2. Minimum Principal Spillway Capacity Effective Height (R) Principal Spillway Design Storm Frequency (yrpa 1 2 5 10 < 20 20 - 24.9 25 - 29.5 30 - 35 NOTE: Effective height is the difference in elevation, between the open channel spillway crest and lowest point at ground level. Where no open channel spillway is planned, use the lowest point on top of the embankment. Detention storage (acres - feet) is the capacity in the pond below the crest of the open channel auxiliary spillway or the top of embankment where no auxiliary channel spillway is planned. Table S. Minimum auxiliary spillway capacity Minimum design storm' Drainage area (acre) Effective heiaht of dam' puml Detention storage (acre-feet) Frequency (years) Minimum duration (hours) 20 or less 20 or less < than 50 10 24 20 or less > than 20 < than 50 25 24 > than 20 < than 50 25 24 All others 50 24 NOTE: Design a minimum of 1.0' of freeboard between the design high -water -flow elevation in the auxiliary spillway or top of pipe spillway and the lowest elevation on top of the embankment. SPILLWAY DESIGN: 1) Using TRSS Hydrologic Program, a 10yr 24hr storm event results in a peak discharge of 5.42 cfs 2) Using NRCS Hydraulic Formula Program, the pipe size is: diameter = 12 Inches length = 30 feet OR 3) Using NRCS EFH Chapter 11, the open channel spillway size is: SUMMARY: Pipe minimum diameter: 12 inches Pipe length : 30 feet Pipe material. Schedule 40 PVC Lowest embankment elev.: 1242 Pipe upstream Invert elev.. 124.6 Pipe downstream Invert elev.: 124.1 depth: width: exit slope (%): Open Channel Depth: 0 feet Channel Bottom Width: 0 feet Inside Slopes (min. 3:1): !t Slope (%): 0.0 Exit Slope Length: 0.0 onnel spillway crest elev. 0.0 USDA UnIted States DepaftMt of re atural R nservatigonervice Project Name: JS Project Description: pipe spillway design Designed by: JS Checked by: CS Approved by: JS Report Generated 02/27/2023 EFT Version 4.0.8.0 Pressure Flow Location: Northampton County Practice: Lagoon conversion to pond Date: Date: Date: 2/27/23 el.126.2' el.127.2' "Won wM(ra max el 124 6, .n el, 124.1' �e u-0 ILl _ 28N Q — A 1+Ko+KbtKpL Kp = 5067 n2 d619 Inputs Water surface elevation : 126.20 ft Design surcharge elev Invert outlet elevation : 124.10 ft WOW of AR.JIM49 Manning's Coefficient (n) : 0.011 Sch. 40 PVC Entrance Coefficient (Ke) : 0.50 Bend Coefficient (Kb) : 0.00 Outputs Flow 0 : 5.41 cis (Q 10 yr = 5.4; Velocity: 6.88 ft/sec Friction Coefficient (Kp) : 0.022 Max allowable fall in pipe when outlet is not subme ed : 0.50 ft Sheet 1 of 1 WinTR-55 Current Data Description --- Identification Data --- User: J Sherrod Date: 2/27/2023 Project: Jimmy Barrow East Lagoon Units: English SubTitle: Lagoon conversion to pond - pipe spillway design State: North Carolina Areal Units: Acres County: Northampton NOAA Filename: <new file> --- Sub -Area Data --- Name Description Reach Area(ac) RCN Tc ---------------------------------------------------------------------------- Lagoon Outlet 0.85 93 0.1 Total area: .85 (ac) --- Storm Data -- Rainfall Depth by Rainfall Return Period 2-Yr 5-Yr 10-Yr 25-Yr 50-Yr 100-Yr 1-Yr (in) (in) (in) (in) (in) (in) (in) -------------------------------------------------------------------------------- 3.41 4.41 5.25 6.52 7.62 8.84 2.82 Storm Data Source: Northampton NOAA County, NC (NRCS) Rainfall Distribution Type: Type II Dimensionless Unit Hydrograph: <standard> WinTR -55, Version 1.00.10 Page 1 2/27/2023 4:12:59 PM J Sherrod Jimmy Barrow East Lagoon Lagoon conversion to pond - pipe spillway design Northampton NOAA County, North Carolina Storm Data Rainfall Depth by Rainfall Return Period 2-Yr 5-Yr 10-Yr 25-Yr 50-Yr 100-Yr 1-Yr (in) (in) (in) (in) (in) (in) (in) -------------------------------------------------------------------------------- 3.91 4.41 5.25 6.52 7.62 8.84 2.82 Storm Data Source: Northampton NOAA County, NC (NRCS) Rainfall Distribution Type: Type II Dimensionless Unit Hydrograph: <standard> WinTR-55, Version 1.00.10 Page 1 2/27/2023 4:12:59 PM J Sherrod Jimmy Barrow East Lagoon Lagoon conversion to pond - pipe spillway design Northampton NOAA County, North Carolina Watershed Peak Table Sub -Area eak Flow by Rainfall Return Period or Reach 10-Yr Identifier (cfs) ----- ----------------- ------------------------------------- SUBAREAS Lagoon 5.42 REACHES OUTLET 5.42 WinTR-55, Version 1.00.10 Page 1 2/27/2023 4:12:59 PN J Sherrod Jimmy Barrow East Lagoon Lagoon conversion to pond - pipe spillway design Northampton NOAA County, North Carolina Hydrograph Peak/Peak Time Table Sub -Area Peak flow and Peak Time (hr) by Rainfall Return Period or Reach 10-Yr Identifier (cfs) (hr) ---------------------------------------------------------------------------------- SUBAREAS Lagoon 5.42 11.93 REACHES OUTLET 5.42 WinTR-55, Version 1.00.10 Page 1 2/27/2023 4:12:59 PM J Sherrod Jimmy Barrow East Lagoon Lagoon conversion to pond - pipe spillway design Northampton NOAA County, North Carolina Sub -Area Summary Table Sub -Area Drainage Time of Curve Receiving Sub -Area Identifier Area Concentration Number Reach Description (ac) (hr) -------------------------------------------------------------------------------- Lagoon .85 0.100 93 Outlet Total Area: .85 (ac) WinTR-55, Version 1.00.10 Page 1 2/27/2023 4:12:59 PM J Sherrod Jimmy Barrow East Lagoon Lagoon conversion to pond - pipe spillway design Northampton NOAA County, North Carolina Sub -Area Time of Concentration Details Sub -Area Flow Mannings's End Wetted Travel Identifier/ Length Slope n Area Perimeter Velocity Time (ft) (ft/ft) (sq ft) (ft) (ft/sec) (hr) -------------------------------------------------------------------------------- Lagoon SHEET 10 0.0200 0.240 0.037 SHALLOW 265 0.050 Time of Concentration 0.1 WinTR-55, Version 1.00.10 Page 1 2/27/2023 4:12:59 PM J Sherrod Jimmy Barrow East Lagoon Lagoon conversion to pond - pipe spillway design Northampton NOAA County, North Carolina Sub -Area Land Use and Curve Number Details Sub -Area Hydrologic Sub -Area Curve Identifier Land Use Soil Area Number Group (ac) -------------------------------------------------------------------------------- Lagoon Paved parking lots, roofs, driveways D .65 98 Meadow -cont. grass (non grazed) D .2 78 Total Area / Weighted Curve Number .85 93 WinTR-55, Version 1.00.10 Page 1 2/27/2023 4:12:59 PM