BUCKS

DELAWARE

NEW CASTLE

KENT

SUSSEX

5-1075

-42

15-1201

-6

15-321

-30

7-1027

-15

7-1042

-10

7-372

-12

7-1006

-14

5-1813

-5

33-330

-38

PHILADELPHIA

UPDIP LIMIT OF

COASTAL PLAIN SEDIMENTS

SALEM

ELMER

BUENA

SHILOH

ATSION

AVALON

BRISTOL

CANTON

BEVERLY

JENKINS

RARITAN

CAMDEN

KEYPORT

WHITING

DOROTHY

ALLOWAY

MILLVILLE

ADELPHIA

CAPE MAY

FREEHOLD

NEWFIELD

CASSVILLE

TUCKAHOE

MARMORA

S

HOPEWELL

TOCKTON

FOWOODBINE

RTESCUE

ROOSEVELT

ROCKY HILL

LAKEWOOD

COLUMBUS

MARLBORO

WILDWOOD

PLAINFIELD

BRIDGETON

PRINCETON

NEW EGYPT

LAKEHURST

OCEAN CITY

WOODBURY

CEDARVILLE

TUCKERTON

FRANKFORD

PITTSTOWN

FIVE POINTS

OCEANVILLE

BROOKVILLE

RIO GRANDE

TOMS RIVER

CLEMENTON

WEST CREEK

PEMBERTON

ALLENTOWN

BRIDGEPORT

JAMESBURG

RUNNEMEDE

ARTHUR KILL

GREEN BANK

SANDY HOOK

FLEMINGTON

PORT NORRIS

HEISLERVILLE

SEA ISLE CITY

NEW GRETNA

RIEGELSVILLE

PENNINGTON

PITMAN EAST

LUMBERVILLE

HIGHTSTOWN

SHIP BOTTOM

INDIAN MILLS

CHATSWORTH

HAMMONTON

WOODSTOWN

ASBURY PARK

FORKED RIVER

PENNS GROVE

BEACH HAVEN

MOUNT HOLLY

NEWTONVILLE

FRENCHTOWN

SEASIDE PARK

PITMAN WEST

OSWEGO LAKE

ATLANTIC CITY

PHILADELPHIA

WOODMANSIE

FARMINGDALE

PERTH AMBOY

LONG BRANCH

BOMBAY HOOK

CONEY ISLAND

LAMBERTVILLE

MARCUS HOOK

SOUTH AMBOY

MOORESTOWN

BOUND BROOK

THE NARROWS

TRENTON EAST

MAYS LANDING

STONE HARBOR

PLEASANTVILLE

BROWNS MILLS

DELAWARE CITY

TRENTON WEST

DIVIDING CREEK

LONG BEACH NE

PORT ELIZABETH

KESWICK GROVE

WILLIAMSTOWN

TAYLORS BRIDGE

MEDFORD LAKES

BARNEGAT LIGHT

POINT PLEASANT

BEN DAVIS POINT

EGG HARBOR CITY

NEW BRUNSWICK

BRIGANTINE INLET

WILMINGTON SOUTH

MONMOUTH JUNCTION

DOVER

ELKTON

KENTON

DENTON

SMYRNA

MILFORD

CLAYTON

MARYDEL

CECILTON

WYOMING

FREDERICA

MILLINGTON

BURRSVILLE

GOLDSBORO

HARRINGTON

WEST GROVE

MIDDLETOWN

LITTLE CREEK

NEWARK EAST

SUDLERSVILLE

NEWARK WEST

BENNETTS PIER

SAINT GEORGES

MISPILLION RIVER

KENNETT SQUARE

WILMINGTON NORTH

5-146

4

5-129

3

15-133

2

7-965

-5

7-932

-5

7-597

-8

7-547

-7

7-368

-9

7-341

-6

7-172

-8

7-111

-8

7-68

-14

7-12

-33

5-130

-6

5-123

-8

P10114

-5

P10113

-1

33-951

-8

33-86

-13

15-778

-8

15-738

-7

15-680

-5

15-678

-6

15-618

-7

15-357

-7

15-349

-5

7-933

-16

7-739

-51

7-723

-42

7-541

-10

7-528

-11

7-523

-38

7-412

-55

7-350

-15

7-335

-20 7-320

-15

7-302

7-284 -52

-40

7-283

-40

7-278

-49

7-273

-56

7-221

-16

7-188

-66

7-185

-63

7-175

-29

7-171

-17

7-163

-26

7-157

-32 7-144

-38

7-130

-51

7-122

-51

7-121

-57

5-823

-47 5-819

-47

5-746

-29

5-648

-22 5-645

-29

5-274

-19

5-262

-44

5-228

-42

5-125

-10

15-326

-34

33-843

-38

33-335

-36

15-1726

-6

15-1125

-3

15-772

-11 15-770

-10

15-742

-26

15-712

-10

15-671

-46

15-615

-15

15-430

-20

15-331

-32

15-312

-25

15-308

-15

15-282

-19

15-139

-11

5-1811

-13

7-1070

-10

15-1487

-17

15-1004

-48

Seaside

Park

Marlton

Medford

Lakes

Forked River

Berlin

Barnegat

Wi Light lmington

Glassboro

Manahawkin

Ship

Bottom Hammonton

Tuckerton

Beach

Haven Egg

Harbor

City

Buena

Vineland

Mays

Landing

Bridgeton

Brigantine

Pleasantville

Millville

Atlantic

City

Ventnor

City Margate

City

Ocean

City

Dover

Avalon

Cape May

Court

House

Stone

Harbor

Rio

Grande

Wildwood

Cape May

New

Brunswick

Sayreville

Keansburg

East

Brunswick

Atlantic

Highlands

Matawan

Sea

Bright

Princeton Jamesburg Red Bank

Long

Eatontown Branch

Hightstown Freehold

Asbury

Trenton Park

Spring

Lake

Lakewood Point

Pleasant

New

Egypt

Browns

Mills

Toms

River

WARREN

HUNTERDON SOMERSET

UNION

MONMOUTH

MERCER

BURLINGTON

OCEAN

SALEM

ATLANTIC

CUMBERLAND

DE-NC

10058

-138

Ec32-07

-90

Db15-05

0

Db33-17

-57 Dc34-05

-68

Dc53-07

-110

DE-NC

53066

-121

Gibbsboro

KENT

CAROLINE

CECIL

-80

0

-10

-30

-120

-60

-40

-40

-60

-100

-40

-30

-20

-60

-30

-10

-50

-20

Glendola

Reservoir

GLOUCESTER

CAMDEN

7-1085

-39

7-1043

-11

7-1055

-8

MARY

LAN

D

Delaware Bay

PENNSYLVANIA

DELAWARE

195

130

206

1

95

70

295

40

30

322

9

NEW JERSEY

Raritan Bay

NEW YORK

40

322

9

Manasquan

Reservoir

QUEEN

ANNE'S

CAPE MAY

Metedeconk River

0

-20 -30

-40

MIDDLESEX

U.S. Department of the Interior

U.S. Geological Survey 

Prepared in cooperation with the

New Jersey Department of Environmental Protection

Scientific Investigations Report 2013–5232

Lower Potomac-Raritan-Magothy aquifer—PLATE 9

DePaul, V.T., and Rosman, Robert, 2015, Water-Level Conditions in the

Confined Aquifers of the New Jersey Coastal Plain, 2008

By

Vincent T. DePaul and Robert Rosman

2015

75°45' 75°30' 75°15' 75° 74°45' 74°30' 74°15' 74°

40°30'

40°15'

40°

39°45'

39°30'

39°15'

39°

0 2.5 5 10 MILES

Potentiometric surface of the 0 2.5 5 10 KILOMETERS Lower Potomac-Raritan-Magothy aquifer, 2008

Base modified from U.S. Geological Survey digital data, 1:100,000, 1983, 

Universal Transverse Mercator Projection Zone 18

7-185

-63

15-742

-26

7-273

-56

EXPLANATION

Observation well with hydrograph—Upper number is well number; 

lower number is water-level altitude, in feet

Approximate updip limit of confinement in the Lower 

Potomac-Raritan-Magothy aquifer

10,000 milligram-per-liter line of equal chloride concentration

(Simulated freshwater-saltwater interface, from Pope and 

Gordon, 1999) 

Outcrop of the Potomac and Raritan Formations

U.S. Geological Survey 7.5-minute quadrangle and name

Altitude of potentiometric surface—Dashed where inferred.

Contour interval is variable. Datum is National Geodetic 

Vertical Datum of 1929 (NGVD 29)

20

Production well—Upper number is well number; lower number is 

water-level altitude, in feet

Observation well—Upper number is well number; lower number is 

water-level altitude, in feet

Estimated location of 250-milligram-per-liter line of equal chloride 

concentration (Modified from DePaul and others, 2009)

Surface water freshwater-saltwater interface

ELMER