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NEW CASTLE COUNTY
D
ELAWARE
CHESTER COUNTY
PENNSYLVANIA
CECI
L COU
NTY
M
ARY L
AND
CHESTER COUNTY PENNSYLVANIA
NEW CASTLE COUNTY DELAWARE
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MARYLANDDELAWARE
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PIKE CREEK
BRANDYWINE CREEK
Wilmington
Newark
New Castle
Elsmere
Newport
Arden
Ardentown
Bellefonte
Ardencroft
Ardentown
NAAMANS RD
FOULK RD
SHIPL
EY R
D
KENNETT PIKE
PAPE
R MIL
L RD
BASIN RD
KIRKWOOD HWY
4TH ST
MONTCHANIN RD
NEWPORT GAP PIKE
CENTRE AVE
MILL CREEK RD
2ND ST
COLL
EGE A
VE
CHURCHMANS RD
FAULKLAND RD
PIKE CREEK RD
HAY RD
VALLEY RD
CAPITOL TRL
WALNU
T ST
UNION ST
MILLTOWN RD
BRACKENVILLE RD
DARLEY RD
OLD WILMINGTON RD
ROCKLAND RD
OLD KENNETT RD
BENGE RD
PYLES FORD RD
CHAPEL ST
BARLEY MILL RD
GRUBB-HARVEY RD
WILSON RD
DUNCAN RD
11TH ST
BROO
M ST
GREE
NBAN
K RD
OWLS
NES
T RD
YORKLYN RD
LEA BLVD
MARYLAND AVE
MCKENNANS CHURCH RD
DOE RUN RD
KING
ST
NEW
CAST
LE A
VE
18TH ST
WED
GEW
OOD
RD
VEALE RD
CENT
ERVI
LLE R
D
WELDIN RD
CREEK MILL RD
MARROWS RD
RED MILL RD
MOORES LA
6TH ST
THOMPSON BRIDGE RD
KIRK RD
SHARPLESS RD
NEW RD
POSSUM PARK RD
CORNER KETCH RD
HARMONY RD
HILLSIDE RD
SMITH BRIDGE RD
GRAVES RD
WOOD DALE RD
THOMPSON STATION RD
SNUFF MILL RD
SALE
M CH
URCH
RD
DUPO
NT R
D
OLD BALTIMORE PIKE
KIAMENSI RD
JACK
SON S
T
ADAM
S ST
PLEASANT HILL RD
7TH ST
CASHO MILL RD
RUTHAR DR
LINCO
LN ST
CHRISTIANA AVE
ALAPOCAS DR
SHARPLEY RD
12TH ST
SCHOOL LA
OLD CAPITOL TRL
CAMPBELL RD
BARKSDALE RD
RAMSEY RD
NEW LI
NDEN
HILL
RD
LITTLE BALTIMORE RD
MILLER RD
FOX DEN RD
NOTTINGHAM RD
FRENCHTOWN RD
BRANDYWINE BLVD
OLD AIRPORT RD
APPLEBY RD
OGLETOWN RD
LIMESTONE RD
CROSSAN RD
DELAWARE AVE
ROCKWOOD RD
MOUNT LEBANON RD
TWADD
ELL M
ILL RD
STAR
RD
HERC
ULES
RD
SOUTHWOOD RD
LIBRA
RY AV
E
MAIN ST
COMMONS BLVD
RIVER RD
MEMORIAL DR
MARKET ST
MITCH RD
UPPE
R PIK
E CRE
EK R
DPOLLY DRUMMOND HILL RD
LAMBSON LA
WILM
INGT
ON RD
BAYNARD BLVD
MURPHY RD
CHAPMAN RD
MARS
H RD
BUCK RD
HEALD ST
BLAC
K GA
TES R
D
WEST AVE
OLD COACH RD
WYOMING RD
BRAN
CH RD
CENTER MILL RD
TELEGRAPH RD
HOPKINS BRIDGE RD
EBRIGHT R
D
BOXWOOD RD
OLD NEWARK RD
LANCASTER PIKE
CHURCH RD
CHRISTIANA BYPASS
JUSTIS ST
AUBURN MILL RD
AIRPORT RD
STAN
TON
CHRI
STIA
NA RD
ZEBLEY RD
PIGEON POINT RD
STONEY BATTER RD
ASHL
AND C
LINTO
N SCHOO
L RD
NEWPORT RD
OLD CHURCHMANS RD
PHILADELPHIA PIKE
NINE GATES RD
SPRU
CE ST
CENTER MEETING RD
CHUR
CH ST
VANDEVER AVE
TERMINAL AVE
BROWNS LA
WOODLAWN RD
NORTHEAST BLVD
HARES CORNER RD
DELAWARE ST
BELLEVUE RD
HILLSIDE MILL RD
OLD PUBLIC RD
SEARS BLVD
PRIDES XING
MCGOVERN RD
ROGERS RD
SCHOOL BELL RD
BALA
RD
FIRST STATE BLVD
SKYL
INE D
R
OLD PAPER MILL RD
CLEVELAND AVE
RACE ST
BRECKS LA
OTTS CHAPEL RD
MEETING HOUSE RD
RIDGE RD
EAGLE RUN RD
POSSUM HOLLOW RD
CHAMBERS ROCK RD
LOWER RD
OLD OGLETOWN RD
WASHINGTON STREET EXT
OLD POSSUM PARK RD
SILVERSIDE RD
BURNT MILL RD
TWIN C LA
HILLCREST AVE
CARPE
NTER ST
ATION RD
HICKMAN RD
GUYENNECOURT RD
PENNSYLVANIA AVE RISIN
G SUN
LA
APPLE RD
WALNUT GREEN RD
SAINT JAMES CHURCH RD
LIGHTHOUSE RD
BEAR
CHR
ISTIA
NA R
D
YEATMANS MILL RD
CARU
THER
S LA
FRONT ST
LEE RD
GARDEN OF EDEN RD
EDGEMOOR RDMITC
HELL R
D
16TH ST
SOCIETY DR
BEAVER VALLEY RD
OLD COUNTRY RD
GRUBBS LANDING RD
LAND
ERS L
A
BROWNLEAF RD
CONCORD AVE
HARRISON AVE
ROAD 355G
SOUTH ST
LANCASTER AVE
POLLY DRUMMOND HILL
COLL
EGE A
VE
12TH ST
NEWPORT PIKE
ELKTON RD
STANTON OGLETOWN RD
BAYN
ARD B
LVD
VALL
EY R
D
STAN
TON
CHRI
STIA
NA R
D
OLD CHURCHMANS RD
MAIN ST
DUPO
NT R
D
GOVERNOR PR
INTZ BLV
D
CHAPEL ST
WASHINGTON ST
UNION ST
RIVER RD
PIKE CREEK RD
RAMSEY RD
DELAWARE AVE
MAIN ST
OLD CAPITOL TRAIL
MARKET ST
NEWPORT PIKE
MAIN ST
CHAPEL ST
CAPITOL TRAIL
CHRISTIANA RD
WASHINGTON ST
UNIO
N ST
CHRISTIANA RD
HILL
SIDE R
D
CONCORD PIKE
CENT
RE A
VE
BROOM ST
DUPONT RD
OLD CHURCHMANS RD
CHESTNUT HILL RD
HOPKINS BRIDGE RD
ADAMS DAM RD
WASHI
NGTO
N ST
BRANDYWINE CREEK RD
OLD COOCHES BRIDGE RD
OLD HARMONY RD
LANCASTER AVE
NEWPORT PIKE
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Mill Creek
Christina River
Red C
lay Cr
eek
White C lay Creek
Pike Creek
Brandywine Creek
Midd
le Ru
n
Little Mill Creek
Hyde Run
Shellpot Creek
Perkins Run
Stoney Creek
Burro
ws Run
Rocky
Run
Leatherems Run
South Branch Naaman Creek
Chestn
ut Ru
n
Turkey Run
Husbands Run
None
such
Cree
k
Lamborn Run
Army Creek
Alapoc
as Ru
n
Wi lson Run
Naaman Creek
Willow Run
Hurric
ane R
un
Ramsey Run
Bogy Run
West Branch Christina River
Beaver
Creek
Persimmon
Run
Bo gy Run
Christina River
W ilson Run
Wilson Run
Wilson Run
Army Creek
Wilson Run
Shellpot Creek
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0 0.5 1 1.5 20.25Miles
Match line: MAP 1MAP 2
Water Resource Protection Areasfor
City of NewarkCity of WilmingtonNew Castle County
Delaware1987, Revised 1993, 2001, 2006, and December 2011
Map 1 of 3
Map composed by Nicole M. MinniWater Resources Agency, University of Delaware
Cockeysville Formation WRPA
Wellhead WRPA
Surface Water WRPA
Flood Plains
Recharge WRPARecharge Areas
Drainage Area
Watersheds upstream from Public Surface Water Intakes
Source Watersheds
Water Resource Protection Areas(WRPAs)
OutcropWissahickon
Reservoir Watershed
Erosion Prone Slopes
Class C WRPA
Class A WRPA - 150-foot RadiusClass A WRPA
Transient, Non-Community Wells(Restaurants, Stores, Hotels, Parks, etc.)Non-Transient, Non-Community Wells(Schools, Daycare Centers, Office, Factory, etc.)
0 2,500 5,000 7,500 10,0001,250Feet
(From New Castle County Unified Development Code, Adopted on December31, 1997, and as amended.)
SURFACE WATER RESOURCE PROTECTION AREAS
WELLHEAD WATER RESOURCE PROTECTION AREAS
COCKEYSVILLE FORMATION WATER RESOURCE PROTECTION AREAS
DEFINITIONS
The Cockeysville Formation Water Resource Protection Areas consist of: (1) areas thatare directly underlain (outcrop) by the Cockeysville Formation, and (2) land surfaceareas which drain to the areas underlain by the Cockeysville Formation (CockeysvilleFormation Drainage Area). The locations of the Cockeysville Formation were obtained from Plate 1 of a report prepared by the Delaware Geological Survey in 1991 titled "Summary Report, Geology and Hydrology of the Cockeysville Formation, New Castle County, Delaware." Areas draining to and across the Cockeysville Formation were derived from the U. S. Geological Survey 7.5 minute topographic quadrangle maps.
The brown areas depicted on Plate 1 in the "Summary Report" mark areas underlain bythe Wissahickon or Setters formations where inter-formational groundwater flow to theCockeysville Formation is considered greater than average. For land use regulation purposes, these areas are considered as being in the Cockeysville Formation DrainageArea.
The Cockeysville Formation forms environmentally sensitive areas because the rockswhich comprise the formation (calcite and dolomite) are fractured and subject todissolution. The associated complex sub-surface drainage system, potential for rapidgroundwater movement, and sinkhole formation make the groundwater in this areahighly susceptible to contamination. In addition, recharge to this formation, essential formaintaining the groundwater resource, is limited by the relatively small outcrop areas.The Cockeysville Formation in the Hockessin area currently supports public and privatewater supply wells producing an average of more than 1.5 million gallons per day.
Wellhead Water Resource Protection Areas are surface and sub-surface areassurrounding public water supply wells or wellfields where the quantity or quality ofgroundwater moving toward such wells or wellfields may be adversely affected by landuse activity. Such activity may result in a reduction of recharge or may lead tointroduction of contaminants to groundwater used for public supply.Three classes of Wellhead Water Resource Protection Areas are shown on the maps.
Class A - The area within a 300 foot radius circle around all public water supply wells which are classified as water systems, as defined by Section 22.146 (Public Water Systems) in the State of Delaware Regulations Governing Public Drinking Water Systems. Class A wells are community, transient non-community, and non-transientnon-community.
Class B - The Glendale and Eastern States Wellfields. These Wellhead Protection Areas have been delineated through the use of hydrogeologic mapping, analytical methods, and application of U.S. EPA modular semi-analytical models using a five year time-of-travel by the Delaware Geological Survey as discussed in a report prepared by the Delaware Geological Survey entitled "Application of the EPA WHPA Models for Delineation of Wellhead Protection Areas in the Glendale and Eastern States Wellfields, New Castle County, Delaware" dated January 1993.
Class C - Wellhead Protection Areas delineated by the Delaware Geological Survey andthe Delaware Department of Natural Resources and Environmental Control through theinterpretation of geologic and hydrologic reports and maps, water-table maps, and professional judgment. Such areas are considered preliminary designations.
Surface Water Resource Protection Areas consist of : (1) the areas which drain on thesurface or underground to existing public water supply reservoirs, (2) the land surfacesin the Flood Plain upstream of an approved public water supply intake. The Flood Plainis comprised of the 100-year Flood Plain as defined in Article 33 of New Castle County Unified Development Code and (a) delineated by the Federal Emergency Management Agency (2010) and (b) soils frequently and very frequently flooded mapped by the New Castle County Soil Survey, prepared by the U.S. Department of Agriculture, Natural Resources Conservation Service (2010), and (3) Erosion Prone Slopes contiguous to and draining toward a Flood Plain or a water course upstream of an approved public watersupply intake. Erosion Prone Slopes consist of soils with all or part of the area at greaterthan or equal to 15% slopes as mapped by the New Castle County Soil Survey, preparedby the U.S. Department of Agriculture, Natural Resources Conservation Service (2010)with map unit symbols BkD, BnF, BrvF, CnD, GaC, GaD, GaE, GeC, GgC, GgD, GhC, GnC, MaC, MaD, MaE, MxC, NtC, NvC, NvD, NvE, SaD, SaE, and UzF.
Surface water sources are susceptible to pollutants released in proximity to and upstreamof intakes or storage facilities. Currently, these sources provide approximately 70% ofthe daily public water supply and most of the emergency water supply for New Castle County. The drainage areas, flood plains, and erosion prone slopes were derived fromthe following maps and report: (1) U. S. Geological Survey Topographic Quadranglemaps, (2) WATER 2000, Volume VII, 1984, Water Resources Agency for New Castle 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).
The drainage areas, flood plains, and erosion prone slopes were derived from the following maps and report: (1) U. S. Geological Survey Topographic Quadrangle maps, (2) WATER 2000, Volume VII, 1984, Water Resources Agency for New Castle County (1984), (3) Digital Flood Plain Mapping, Federal Emergency Management Agency, 1997, and (4) Soil Survey of New Castle County, U. S. Department of Agriculture, 1970.
New Castle County Department of Land Use, New Castle County Roads, 2011.
Delaware Department of Natural Resources and Environmental Control, Public SurfaceWater Supply Intakes Database and Public Water Supply Wells Database, 2011.
Delaware Geological Survey, Delineation of Ground-Water Recharge Resource ProtectionAreas in the Coastal Plain of New Castle County, Delaware, 1993.
Delaware Geological Survey, Application of the EPA WHPA Models for Delineation ofWellhead Protection Areas in the Glendale and Eastern States Wellfields New CastleCounty, Delaware, 1993.
Delaware Geological Survey, Letter to Water Resources Agency for New Castle County, September 27, 1993.
Delaware Geological Survey, Summary Report Geology and Hydrology of the CockeysvilleFormation, New Castle County, Delaware, 1991.Federal Emergency Management Agency, Digital Flood Plain Maps, 2010.
New Castle County, Delaware, New Castle County Unified Development Code, adopted onDecember 31, 1997 and as amended.
United States Department of Agriculture, Natural Resources Conservation Service, NewCastle County Soil Survey, 2010.
United States Geological Survey, Newark East (1985), Newark West (1970), Kennett Square (1985), and Wilmington North (1973) Quadrangles.United States Geological Survey, Digital Line Graph (DLG) files, check this date 1993.
Water Resources Agency for New Castle County, New Castle County ResourceProtection Area Program Revision, 1987.
RECHARGE WATER RESOURCE PROTECTION AREAS
ACKNOWLEDGEMENTS
REFERENCES
Recharge Water Resource Protection Areas are designated as having excellent potential for groundwater recharge. They were delineated using methodology described in a report prepar-ed by the Delaware Geological Survey entitled "Delineation of Ground-Water Recharge Resource Protection Areas in the Coastal Plain of New Castle County, Delaware (1993)."
This map was prepared by the University of Delaware, Institute for Public Administration, Water Resources Agency with technical assistance from the Delaware Geological Survey, Delaware Department of Natural Resources and Environmental Control, New Castle County Department of Special Services, New Castle County Department of Land Use, New Castle Conservation District, and the New Castle County Resource Protection Area Technical Advisory Committee. Technical reports completed by private consultants on individual development proposals were also used to revise WRPA boundaries.
