Appendix D. Conewago Creek Watershed

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1 Appendix D Conewago Creek shed

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3 Stormwater Management (Act 167) Plan Municipal Survey Results Conewago Creek shed - (12 municipalites responded) Twelve (12) municipalities that responded to the Spring 2009 Survey were located either wholly or partially within the Conewago Creek shed. Ten (10) of the 12 municipalities that responded to the Survey have separate Stormwater Management Ordinances. The other two (2) municipalities address stormwater in their respective Subdivision and Land Development Ordinance (SALDO). Seven (7) municipalities indicated that they have water quality regulations and ten (10) of the municipalities indicated that they have rate controls. Six (6) municipalities had concerns with their stormwater regulations, including out-dated stormwater regulations, consistency with the PA DEP Model Stormwater Management Ordinance, and not meeting NPDES MS4 and PA DEP stormwater management programs. The most common stormwater complaints in this shed were increased runoff and poor drainage. Other common concerns included localized flooding, stream bank and stream bed erosion, and sinkholes. Other concerns mentioned included water ponding in stormwater basins, pipe surcharge, bridge inadequacy, and water in residential basements. Three (3) of the 12 responding municipalities are proposing infrastructure improvements to reduce flooding. The proposed improvements are bridge and culvert replacements. Three (3) municipalities monitor rainfall events and each receives such information from municipal wastewater treatment plants. Two (2) of the 12 municipalities have completed studies related to streams/watersheds. All the studies in one (1) municipality are specific development sites, while the studies in the other municipality are for stream restoration projects and the Kreutz Creek Act 167 Stormwater Management Plan. In 11 of the 12 municipalities, the municipal engineer reviews the stormwater management plans. Additionally, 11 municipalities perform inspections of stormwater improvements during construction, while only seven (7) of the 11 routinely inspect stormwater management facilities once they are completed. One (1) municipality did not respond since they do not have a SALDO. Three (3) municipalities identified a historical trend in the municipality as impacting water quantity or quality. Two (2) municipalities listed water quality (turbidity) as an issue and one (1) listed washing out of creek beds as an issue. Three (3) of the 12 municipalities indicated changes in water quality as a result of changes in land use. The increased volume of run-off has caused sedimentation which clogged some stormwater structures and caused erosion of streambanks. Another concern in one (1) municipality was the affect of infiltration requirements by large developments on well water quality. Six (6) municipalities in this shed had other concerns with stormwater management or high stream flow. These concerns were stream bed downcutting, increased sediment loading, increased sediment deposition, stream degradation, stream bank stabilization, lack of riparian buffers, old infrastructure, flooded roadways and run-off from new development. Appendix D - 1

4 System Table D-1 Conewago Creek shed Community Supply Systems (2009) Service Area shed(s) Service Area Municipality(ies) Source Type Served Amber Hill MHP Conewago Newberry Twp. ground 80 Conewago Valley MHP Conewago Newberry Twp. ground 225 Countryview MHP Conewago Washington Twp. ground 150 Dover Township System Conewago Dover Twp. Dover Borough System Franklintown Borough Mun. Auth. Goldsboro Borough Co. Conewago Conewago Conewago Dover Boro., Dover Twp. Franklintown Borough, Franklin Twp. Goldsboro Boro,, Newberry Twp. ground purchased - surface 14,640 ground 1,900 ground 705 ground 450 J & A MHP Conewago Newberry Twp. ground 140 James Dorwart Apts. Conewago Fairview Twp. ground 226 Laurelwood MHP Conewago Newberry Twp. ground 50 Liberty Village Conewago Conewago Twp. ground 40 Llewellyns MHP Conewago Dover Twp. ground 250 Locust Manor MHP Conewago Fairview Twp. ground 65 Mountain View Terrace Conewago Newberry Twp. ground 350 Mount Airy MHP Conewago Warrington Twp. ground 50 New Life for Girls Conewago Conewago Twp. ground 80 Newberry Estates Conewago Newberry Twp. ground 420 Newberry Farms Conewago Newberry Twp. ground 350 Newberry System Conewago Newberry Twp. ground 4,926 Northwood Manor MHP Conewago Newberry Twp. ground 230 Orchard Hills Assoc. MHP Conewago Newberry Twp. ground 50 Paradise School for Boys Conewago Paradise Twp. ground 100 Paradise MHP Conewago Paradise Twp. ground 280 Regent Acres MHP Conewago Fairview Twp. ground 325 Sharps Village North Conewago Conewago Twp. ground 70 Starview MHP Conewago East Manchester Twp. ground 534 Stoney Run Apartments Conewago Franklin Twp. ground 40 United Pennsylvania Conewago Newberry Twp. ground surface 5,440 Walmar Manor MHP Conewago Franklin Twp. ground 400 Hanover Municipal works Codorus Conewago Hanover Boro. Penn & West Manheim Twps. surface ground (emergency) 36,576 Appendix D - 2

5 System West Manchester Twp. Authority York Company Table D-1 Conewago Creek shed Community Supply Systems (2009) Service Area shed(s) Codorus Conewago Codorus Conewago Kreutz-Muddy * Served includes total service area Service Area Municipality(ies) Source Type Served West Manchester Twp. ground 9,800* Several surface Source: US Environmental Protection Agency (EPA), Safe Drinking Information System (SDWIS) and York County Planning Commission 159,623* Appendix D - 3

6 Table D-2 Conewago Creek shed - Municipal Wastewater Treatment Plants (2008) Permitted Flow Avg Flow Received Remaining Flow Capacity Permitted Organic Capacity (lbs/day) Avg Organic Load (lbs/day) Remaining Organic Capacity (lbs/day) Equivalent Sewered (1) EDU s Served (2) Remaining EDU Capacity Service Area shed(s) Lewisberry Area Joint Authority WWTP Gifford Pinchot State Park WWTP Conewago Conewago York Haven Boro. WWTP Conewago Conewago Twp. WWTP , Conewago Dover Boro. WWTP , Conewago Dover Twp. Sewer Department. WWTP ,000 6,206 5,794 40,200 11,486 11,371 Conewago Codorus s ,120 7,151 6,969 47,080 13,451 13,108 1 Equivalent Sewered = Avg Flow /100 2 Equivalent Dwelling Unit (EDU)= Avg Flow /100/3.5 Source: PA DEP and York County Planning Commission

7 Table D-3 Conewago Creek shed - Non-Municipal Sewage Treatment Facilities Name of Facility Discharge Body of Approved Design Flow (GPD) Llewellyns Manufactured Home Community, Inc. Unnamed Tributary to Conewago Creek 20,000 DCNR-Bureau of State Parks - Gifford Pinchot State Park Conewago Creek 216,000 Conewago Valley MHP INC Conewago Creek 46,000 Martin, W. Adam - Chesapeake Estates of Thomasville Little Conewago Creek 64,000 Millers Skyview Sales INC Unnamed Tributary of Bennetts Run 25,000 GSP Management Co. - Mountain V Unnamed Tributary to Conewago Creek 70,000 Walmar Manor MHC LLC North Branch Bermudian Creek 37,500 ATG Properties LLC Unnamed Tributary to Conewago Creek 19,100 Peifer, Irvin - Laurelwood MHP Unnamed Tributary of Bennett Run 3,300 New Life for Girls Laurel Run 5,000 Outdoor World Resorts LLC Conewago Creek 50,000 Rodas, Tom (Paradise MHP) Unnamed Tributary Beaver Creek 20,000 Gateway Unlimited Inc. Unnamed Tributary to North Branch Bermudian Creek 200 LWB Refractories Co. Unnamed Tributary to Honey Run 2,000 Kampel Enterprises Inc. Unnamed Tributary of North Branch Bermudian Creek 2,500 DCNR-Bureau of State Parks Beaver Creek (Conewago Lake) 160,000 Dorwart, James - Dorwart Apts Unnamed Tributary of Bennett Run 25,000 Hoffman, Raymond L - Country View MHP Unnamed tributary of Red Run 12,500 Deal, Paul S. Unnamed Tributary of Doe Run 400 Thomasville Land LP Honey Run 3,500 Engle, Eric Unnamed Tributary to North Branch Bermudian Creek 400 Campbell, Shawn Conewago Creek 400 Hostetter, Adam Little Conewago Creek 400 Bair, Norma J. Laurel Run 400 Wagaman, Bruce and Pamela Little Conewago Creek Not Available Source: PA DEP

8 Sub-shed Pour Point ID Drainage Area (Square Miles) Safe Yield* Table D-4 Conewago Creek shed - Budget Public Supply Ind Com m Registered Withdrawals WITHDRAWALS Estimated Withdrawals Power Plant Ag Mining Res Ind Com m Ag Withdrawals Discharges Beaver Creek Beaver Creek Beaver Creek Beaver Creek Beaver Creek Beaver Creek Beaver Creek Beaver Creek Beaver Creek Bennett Run Bennett Run Bennett Run Bennett Run Bermudian Creek Bermudian Creek Bermudian Creek Bermudian Creek Bermudian Creek Bermudian Creek Bermudian Creek Bermudian Creek Bermudian Creek Net Surface Balance**

9 Sub-shed Pour Point ID Drainage Area (Square Miles) Safe Yield* Table D-4 Conewago Creek shed - Budget Public Supply Ind Com m Registered Withdrawals WITHDRAWALS Estimated Withdrawals Power Plant Ag Mining Res Ind Com m Ag Withdrawals Discharges Bermudian Creek Bermudian Creek Bermudian Creek Bermudian Creek Bermudian Creek Bermudian Creek Fox Run Fox Run Latimore Creek Latimore Creek Latimore Creek Latimore Creek Little Conewago Creek Little Conewago Creek Little Conewago Creek Little Conewago Creek Little Conewago Creek Little Conewago Creek Little Conewago Creek Little Conewago Creek Little Conewago Creek Little Conewago Creek Net Surface Balance**

10 Sub-shed Pour Point ID Drainage Area (Square Miles) Safe Yield* Table D-4 Conewago Creek shed - Budget Public Supply Ind Com m Registered Withdrawals WITHDRAWALS Estimated Withdrawals Power Plant Ag Mining Res Ind Com m Ag Withdrawals Discharges Little Conewago Creek Mud Run Mud Run Mud Run Mud Run North Branch Bermudian Creek North Branch Bermudian Creek North Branch Bermudian Creek North Branch Bermudian Creek North Branch Bermudian Creek North Branch Bermudian Creek North Branch Bermudian Creek North Branch Bermudian Creek Opossum Creek Opossum Creek Opossum Creek Opossum Creek Opossum Creek Opossum Creek Opossum Creek Opossum Creek Opossum Creek Net Surface Balance**

11 Sub-shed Pour Point ID Drainage Area (Square Miles) Safe Yield* Table D-4 Conewago Creek shed - Budget Public Supply Ind Com m Registered Withdrawals WITHDRAWALS Estimated Withdrawals Power Plant Ag Mining Res Ind Com m Ag Withdrawals Discharges Plum Creek Plum Creek Quaker Run South Branch Conewago Creek South Branch Conewago Creek South Branch Conewago Creek South Branch Conewago Creek South Branch Conewago Creek South Branch Conewago Creek South Branch Conewago Creek South Branch Conewago Creek South Branch Conewago Creek South Branch Conewago Creek South Branch Conewago Creek South Branch Conewago Creek South Branch Conewago Creek South Branch Conewago Creek South Branch Conewago Creek South Branch Conewago Creek Stony Run Swift Run Swift Run Net Surface Balance**

12 Sub-shed Pour Point ID Drainage Area (Square Miles) Safe Yield* Table D-4 Conewago Creek shed - Budget Public Supply Ind Com m Registered Withdrawals WITHDRAWALS Estimated Withdrawals Power Plant Ag Mining Res Ind Com m Ag Withdrawals Discharges Swift Run Conewago Creek Conewago Creek Conewago Creek Conewago Creek Conewago Creek Conewago Creek Conewago Creek Conewago Creek Conewago Creek Conewago Creek Conewago Creek Conewago Creek Conewago Creek Conewago Creek Conewago Creek Conewago Creek Conewago Creek Conewago Creek Conewago Creek Conewago Creek Conewago Creek Net Surface Balance**

13 Sub-shed Pour Point ID Drainage Area (Square Miles) Safe Yield* Table D-4 Conewago Creek shed - Budget Public Supply Ind Com m Registered Withdrawals WITHDRAWALS Estimated Withdrawals Power Plant Ag Mining Res Ind Com m Ag Withdrawals Discharges Conewago Creek Conewago Creek Conewago Creek Conewago Creek Conewago Creek Conewago Creek *These figures are based on DEP s Initial Screening Tool (ISC) which is 50% of the 7 day, 10-year low flow statistic (7Q10) and is the surrogate for safe yield. ** Amount of water left to use, without exceeding safe yield. Pour Points Diagram. This diagram illustrates the cumulative property of Pour Points. Everything upstream is additive as you go down the stream. Source: PA DEP Net Surface Balance**

14 Table D-5 Conewago Creek shed - Projections Municipalities % of Municipal in shed Estimated Projected Percent Change Carroll Township 5% % Conewago Township 100% 5,278 6,911 7, % Dover Borough 100% 1,815 1,923 2, % Dover Township 100% 18,074 21,153 24, % East Manchester Township/Manchester Borough 22% 1,634 2,122 2, % Fairview Township 11% 1,573 1,850 2, % Franklin Township 93% 4,189 4,468 5, % Franklintown Borough 100% % Hanover Borough 76% 11,076 11,419 11, % Jackson Township 57% 3,462 4,506 4, % Lewisberry Borough 100% % Manchester Township 35% 4,481 5,926 7, % Monaghan Township 4% % Newberry Township 40% 5,739 6,181 7, % Paradise Township 95% 3,420 3,773 4, % Penn Township 37% 5,391 5,853 6, % Warrington Township 100% 4,435 4,792 5, % Washington Township 100% 2,460 2,670 3, % Wellsville Borough 100% % West Manchester Township 40% 6,814 7,298 8, % West Manheim Township 46% 2,214 3,408 4, % York Haven Borough 50% % Percent of County in Conewago Creek shed shed s 83,978 96, , % Source: US Census Bureau & YCPC 21.99% 22.66% 22.78% Appendix D - 12

15 Table D-6 Conewago Creek shed Projected Housing Need to 2020 Municipality Estimated 2008 Projected 2020 Change Average Household Size Projected Housing Need 2020 Proposed Dwelling Units * Carroll Township Conewago Township 6,911 7, Dover Borough 1,923 2, Dover Township 21,153 24,574 3, , East Manchester Township / Manchester Borough 2,122 2, Fairview Township 1,850 2, Franklin Township 4,468 5,625 1, Franklintown Borough Hanover Borough 11,419 11, Jackson Township 4,506 4, Lewisberry Borough Manchester Township 5,926 7,570 1, Monaghan Township Newberry Township 6,181 7,356 1, Paradise Township 3,773 4, Penn Township 5,853 6, Warrington Township 4,792 5, Washington Township 2,670 3, Wellsville Borough West Manchester Township 7,298 8,631 1,

16 Table D-6 Conewago Creek shed Projected Housing Need to 2020 Municipality Estimated 2008 Projected 2020 Change Average Household Size Projected Housing Need 2020 Proposed Dwelling Units * West Manheim Township 3,408 4, York Haven Borough shed 96, ,453 14,208 5,561 3,197 *Refers to dwellings units proposed on Final residential subdivision and land development plans reviewed by YCPC Sources: US Census Bureau and the York County Planning Commission

17 Table D-7 Conewago Creek shed - Municipal Stormwater Project Opportunities ( identifiable actions to mitigate hazards) Municipality Action/ Opportunity Responsible Agency Identified Funding Sources Estimated Cost Time Frame Project Priority East Manchester Township Stream bank stabilization and environmental clean-up along Conewago Creek and Creek Bottom Road East Manchester Township Township General Fund, In-kind services, CRP, EWPP, Growing Greener II, RBP, HMGP, LMRDP $100,000 Dependent Upon Funding Availability Other- Low East Manchester Township Signing, environmental clean-up, and road improvement (resulting from flooding) to Gut Road Area East Manchester Township Township General Fund, In-kind services, CRP, EWPP, Growing Greener II, HMGP, LMRDP, RBP, WAWTAP $40,000 Dependent Upon Funding Availability Other/ Flooding- Medium Hanover Borough Removal of sediment under Municipal Bridge No. 435 to maintain channel and floodway Hanover Borough In-kind services, PDMP, EWPP $20,000 Dependent Upon Funding Availability Flooding- Low Source: Hazard Mitigation Plan Component of the York County Comprehensive Plan

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YORK COUNTY REGIONAL CHESAPEAKE BAY POLLUTANT REDUCTION PLAN

YORK COUNTY REGIONAL CHESAPEAKE BAY POLLUTANT REDUCTION PLAN DECEMBER 2014 (Prepared by the York County Planning Commission and Center for Watershed Protection in cooperation with the Regional CBPRP Steering