MARL PIT RD BOHEMIA MILL RD Silver Run 8485289852 VANCE NECK RD 227658226310 Match line: MAP 2 DEFINITIONS RECHARGE WATER RESOURCE PROTECTION AREAS (From New Castle County Unified Development Code, Adopted on December Recharge Water Resource Protection Areas are designated as having excellent potential for 13 MARL PIT RD ¤£ 31, 1997, and as amended.) groundwater recharge. They were delineated using methodology described in a report prepar- MAP 3 ed by the Delaware Geological Survey entitled "Delineation of Ground-Water Recharge COCKEYSVILLE FORMATION WATER RESOURCE PROTECTION AREAS Resource Protection Areas in the Coastal Plain of New Castle County, Delaware (1993)." CEDAR LANE RD The Cockeysville Formation Water Resource Protection Areas consist of: (1) areas that are directly underlain (outcrop) by the Cockeysville Formation, and (2) land surface ACKNOWLEDGEMENTS areas which drain to the areas underlain by the Cockeysville Formation (Cockeysville This map was prepared by the University of Delaware, Institute for Public Administration, Formation Drainage Area). The locations of the Cockeysville Formation were obtained Water Resources Agency with technical assistance from the Delaware Geological Survey, from Plate 1 of a report prepared by the Delaware Geological Survey in 1991 titled Delaware Department of Natural Resources and Environmental Control, New Castle County "Summary Report, Geology and Hydrology of the Cockeysville Formation, New Castle Department of Special Services, New Castle County Department of Land Use, New Castle OP1 BRICK MILL RD Drawyer Creek County, Delaware." Areas draining to and across the Cockeysville Formation were Conservation District, and the New Castle County Resource Protection Area Technical derived from the U. S. Geological Survey 7.5 minute topographic quadrangle maps. Advisory Committee. Technical reports completed by private consultants on individual development proposals were also used to revise WRPA boundaries. The brown areas depicted on Plate 1 in the "Summary Report" mark areas underlain by Ap REFERENCES BUNKER HILL RD po the Wissahickon or Setters formations where inter-formational groundwater flow to the qu in im Cockeysville Formation is considered greater than average. For land use regulation New Castle County Department of Land Use, New Castle County Roads, 2011. in k R purposes, these areas are considered as being in the Cockeysville Formation Drainage i v e r Area. Delaware Department of Natural Resources and Environmental Control, Public Surface Water Supply Intakes Database and Public Water Supply Wells Database, 2011. Middletown Odessa The Cockeysville Formation forms environmentally sensitive areas because the rocks 221355 9 221356 OP which comprise the formation (calcite and dolomite) are fractured and subject to Delaware Geological Survey, Delineation of Ground-Water Recharge Resource Protection 168004 10817 dissolution. The associated complex sub-surface drainage system, potential for rapid Areas in the Coastal Plain of New Castle County, Delaware, 1993. groundwater movement, and sinkhole formation make the groundwater in this area highly susceptible to contamination. In addition, recharge to this formation, essential for Delaware Geological Survey, Application of the EPA WHPA Models for Delineation of maintaining the groundwater resource, is limited by the relatively small outcrop areas. 1086110772 Wellhead Protection Areas in the Glendale and Eastern States Wellfields New Castle The Cockeysville Formation in the Hockessin area currently supports public and private County, Delaware, 1993. 184815 D 10746 e water supply wells producing an average of more than 1.5 million gallons per day. 10745 l 39676 a Delaware Geological Survey, Letter to Water Resources Agency for New Castle County, 39685 SILVER RUN RD w WELLHEAD WATER RESOURCE PROTECTION AREAS 10453 a September 27, 1993. 234277235263 OLD CORBITT RD r Wellhead Water Resource Protection Areas are surface and sub-surface areas 111968111065 ¤£13 e 188292 299 surrounding public water supply wells or wellfields where the quantity or quality of Delaware Geological Survey, Summary Report Geology and Hydrology of the Cockeysville 299 OP OP groundwater moving toward such wells or wellfields may be adversely affected by land Formation, New Castle County, Delaware, 1991. use activity. Such activity may result in a reduction of recharge or may lead to 10940 introduction of contaminants to groundwater used for public supply. Federal Emergency Management Agency, Digital Flood Plain Maps, 2010. HAMMOND RD Three classes of Wellhead Water Resource Protection Areas are shown on the maps. New Castle County, Delaware, New Castle County Unified Development Code, adopted on 1 OP 110612185186 December 31, 1997 and as amended. 179292 97960 Class A - The area within a 300 foot radius circle around all public water supply wells 185232 R which are classified as water systems, as defined by Section 22.146 (Public Water United States Department of Agriculture, Natural Resources Conservation Service, New Systems) in the State of Delaware Regulations Governing Public Drinking Water iv Castle County Soil Survey, 2010. e Systems. Class A wells are community, transient non-community, and non-transient r non-community. United States Geological Survey, Newark East (1985), Newark West (1970), Kennett Square THOMAS LANDING RD (1985), and Wilmington North (1973) Quadrangles. Class B - The Glendale and Eastern States Wellfields. These Wellhead Protection Areas 154221 10454 B have been delineated through the use of hydrogeologic mapping, analytical methods, United States Geological Survey, Digital Line Graph (DLG) files, check this date 1993. ig D itch, The and application of U.S. EPA modular semi-analytical models using a five year time-of- D k travel by the Delaware Geological Survey as discussed in a report prepared by the eep C ree Water Resources Agency for New Castle County, New Castle County Resource 10767 Delaware Geological Survey entitled "Application of the EPA WHPA Models for Protection Area Program Revision, 1987. Delineation of Wellhead Protection Areas in the Glendale and Eastern States Wellfields, New Castle County, Delaware" dated January 1993. 9 10766 OP k e e r Class C - Wellhead Protection Areas delineated by the Delaware Geological Survey and C 178412 d o the Delaware Department of Natural Resources and Environmental Control through the OLD STATE RD R e l interpretation of geologic and hydrologic reports and maps, water-table maps, and g n A professional judgment. Such areas are considered preliminary designations. Hangmans Run SURFACE WATER RESOURCE PROTECTION AREAS Surface Water Resource Protection Areas consist of : (1) the areas which drain on the Ditc ays h NOXONTOWN RD R surface or underground to existing public water supply reservoirs, (2) the land surfaces 99806 in the Flood Plain upstream of an approved public water supply intake. The Flood Plain Fi STAVE LANDING RD sh in i g M ll Cr is comprised of the 100-year Flood Plain as defined in Article 33 of New Castle County C eek reek Unified Development Code and (a) delineated by the Federal Emergency Management E D Agency (2010) and (b) soils frequently and very frequently flooded mapped by the New R N h Castle County Soil Survey, prepared by the U.S. Department of Agriculture, Natural A c A 178374178373 it D se Resources Conservation Service (2010), and (3) Erosion Prone Slopes contiguous to and L ou W 71 H OP ch draining toward a Flood Plain or a water course upstream of an approved public water Y a e A P h R itc supply intake. Erosion Prone Slopes consist of soils with all or part of the area at greater L ak D te O R hi iv A than or equal to 15% slopes as mapped by the New Castle County Soil Survey, prepared E W e r S h by the U.S. Department of Agriculture, Natural Resources Conservation Service (2010) D M o r e D with map unit symbols BkD, BnF, BrvF, CnD, GaC, GaD, GaE, GeC, GgC, GgD, GhC, it c h GnC, MaC, MaD, MaE, MxC, NtC, NvC, NvD, NvE, SaD, SaE, and UzF. FIELDSBORO RD 1 OP LEVELS RD Surface water sources are susceptible to pollutants released in proximity to and upstream STRAWBERRY LA Y of intakes or storage facilities. Currently, these sources provide approximately 70% of Y 13 T T ¤£ the daily public water supply and most of the emergency water supply for New Castle OP15 CEDAR SWAMP RD N N County. The drainage areas, flood plains, and erosion prone slopes were derived from in TAYLORS BRIDGE RD Dra U le U d the following maps and report: (1) U. S. Geological Survey Topographic Quadrangle MONEY RD Mid O O maps, (2) WATER 2000, Volume VII, 1984, Water Resources Agency for New Castle C C County (1984), (3) Digital Flood Plain Mapping, Federal Emergency Management Agency (2010), and (4) New Castle County Soil Survey, U. S. Department of Agriculture, Natural Resources Conservation Service (2010). E The drainage areas, flood plains, and erosion prone slopes were derived from the 9 L OP following maps and report: (1) U. S. Geological Survey Topographic Quadrangle maps, T PINE TREE RD Beaver Branch (2) WATER 2000, Volume VII, 1984, Water Resources Agency for New Castle County S L BLACKBIRD LANDING RD (1984), (3) Digital Flood Plain Mapping, Federal Emergency Management Agency, A I 1997, and (4) Soil Survey of New Castle County, U. S. Department of Agriculture, 1970. C C E W C E FLEMING LANDING RD N Townsend UNION CHURCH RD 187348 71 196919 OP 10931 B lackb ird Creek SUMMIT BRIDGE RD un Herring R NEW DISCOVERY RD DOGTOWN RD COLDWELL CORNER RD OP15 Ba 98363 rlo w WALKER SCHOOL