U.S. Department of the Interior

U.S. Geological Survey

Scientific Investigations Report 2008-5145

Prepared in cooperation with the

New Jersey Department of Environmental Protection

Water-level conditions in selected confined aquifers of the 

New Jersey and Delaware Coastal Plain, 2003

Water-level conditions in selected 

confined aquifers of the New Jersey 

and Delaware Coastal Plain, 2003

By Vincent T. dePaul, Robert Rosman, and Pierre J. Lacombe 

Scientific Investigations Report 2008-5145

U.S. Department of the Interior

U.S. Geological Survey

Prepared in cooperation with the 

New Jersey Department of Environmental Protection
U.S. Department of the Interior

DIRK KEMPTHORNE, Secretary

U.S. Geological Survey

Mark D. Myers, Director

U.S. Geological Survey, Reston, Virginia: 2009

For product and ordering information:

World Wide Web: http://www.usgs.gov/pubprod

Telephone: 1-888-ASK-USGS

For more information on the USGS—the Federal source for science about the Earth,

its natural and living resources, natural hazards, and the environment:

World Wide Web: http://www.usgs.gov

Telephone: 1-888-ASK-USGS

Suggested citation:

dePaul, V.T., Rosman, Robert, and Lacombe, P.J., 2009, Water-level conditions in selected confined aquifers of the 

New Jersey and Delaware Coastal Plain, 2003: U.S. Geological Survey Scientific Investigations Report 2008-5145, 

123 p., 9 pl.

Any use of trade, product, or firm names is for descriptive purposes only and does not imply 

endorsement by the U.S. Government. Use of company names is for identification purposes only and does not imply 

responsibility.

Although this report is in the public domain, permission must be secured from the individual 

copyright owners to reproduce any copyrighted material contained within this report.

ISBN 978-1-4113-2358-2
iii

Contents

Abstract...........................................................................................................................................................1

Introduction.....................................................................................................................................................2

Purpose and Scope ..............................................................................................................................2

Description of Study Area ...................................................................................................................3

Hydrogeologic Framework.........................................................................................................3

Well-Numbering System.............................................................................................................3

Previous Investigations........................................................................................................................3

Data Collection and Analysis.......................................................................................................................3

Cohansey Aquifer...........................................................................................................................................9

Water Withdrawals and Extent of Freshwater ................................................................................9

Water Levels........................................................................................................................................10

Rio Grande Water-Bearing Zone...............................................................................................................12

Water Withdrawals and Extent of Freshwater ..............................................................................12

Water Levels........................................................................................................................................13

Atlantic City 800-Foot Sand ........................................................................................................................13

Water Withdrawals and Extent of Freshwater ..............................................................................13

Water Levels........................................................................................................................................16

Piney Point Aquifer......................................................................................................................................18

Water Withdrawals and Extent of Freshwater ..............................................................................20

Water Levels........................................................................................................................................21

Vincentown Aquifer.....................................................................................................................................24

Water Withdrawals and Extent of Freshwater ..............................................................................24

Water Levels........................................................................................................................................24

Wenonah-Mount Laurel Aquifer ...............................................................................................................26

Water Withdrawals and Extent of Freshwater ..............................................................................27

Water Levels........................................................................................................................................31

Englishtown Aquifer System......................................................................................................................33

Water Withdrawals and Extent of Freshwater ..............................................................................37

Water Levels........................................................................................................................................37

Upper Potomac-Raritan-Magothy Aquifer..............................................................................................40

Water Withdrawals and Extent of Freshwater ..............................................................................40

Water Levels........................................................................................................................................42

Middle and undifferentiated Potomac-Raritan-Magothy Aquifer.......................................................45

Water Withdrawals and Extent of Freshwater ..............................................................................46

Water Levels........................................................................................................................................49

Lower Potomac-Raritan-Magothy Aquifer..............................................................................................53

Water Withdrawals and Extent of Freshwater ..............................................................................54

Water Levels........................................................................................................................................55

Summary........................................................................................................................................................61

Acknowledgments.......................................................................................................................................63

References Cited..........................................................................................................................................63
iv

Appendix 1. Water-level data for wells screened in the confined Cohansey aquifer and the Rio 

Grande water-bearing zone, New Jersey Coastal Plain, 1978–2003 .....................................67

Appendix 2. Water-level data for wells screened in the Atlantic City 800-foot sand, New 

Jersey Coastal Plain, 1978–2003..................................................................................................72

Appendix 3. Water-level data for wells screened in the Piney Point aquifer, New Jersey 

and Delaware Coastal Plain and vicinity, 1978–2003................................................................77

Appendix 4. Water-level data for wells screened in the Vincentown aquifer, New Jersey 

Coastal Plain, 1978–2003 ...............................................................................................................82

Appendix 5. Water-level data for wells screened in the Wenonah-Mount Laurel aquifer, 

New Jersey and Delaware Coastal Plain, 1978–2003 ..............................................................85

Appendix 6. Water-level data for wells screened in the Englishtown aquifer system, 

New Jersey Coastal Plain, 1978–2003 ........................................................................................93

Appendix 7. Water-level data for wells screened in the Upper Potomac-Raritan-Magothy 

aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003 ..........................99

Appendix 8. Water-level data for wells screened in the Middle and undifferentiated 

Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and 

vicinity, 1978–2003 ........................................................................................................................109

Appendix 9. Water-level data for wells screened in the Lower Potomac-Raritan-Magothy 

aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003 ........................119

Figures

1. Map showing location of the study area, New Jersey and Delaware Coastal Plain .......4

2a-2c. Sections showing—

2a. Section A-A’ showing potentiometric-surface contours in aquifers of the 

northern New Jersey Coastal Plain, 2003........................................................................6

2b. Section B-B’ showing potentiometric-surface contours in aquifers of the 

southern New Jersey Coastal Plain, 2003 .......................................................................7

2c. Section C-C’ showing potentiometric-surface contours in aquifers of Cape May 

County, New Jersey Coastal Plain, 2003..........................................................................8

3. Map showing location and amount of ground water withdrawn from the confined 

Cohansey aquifer, Cape May County and vicinity, New Jersey Coastal Plain, 2003.......11

4-5. Graphs showing—

4. Estimated ground-water withdrawals from the confined Cohansey aquifer in 

Cape May County, New Jersey Coastal Plain, 1978–2003 ..........................................11

Plates

In pocket

1. Potentiometric surface of the Cohansey aquifer and the Rio Grande waterbearing zone, 2003

2. Potentiometric surface of the Atlantic City 800-foot sand, 2003

3. Potentiometric surface of the Piney Point aquifer, 2003

4. Potentiometric surface of the Vincentown aquifer, 2003

5. Potentiometric surface of the Wenonah-Mount Laurel aquifer, 2003

6. Potentiometric surface of the Englishtown aquifer system, 2003

7. Potentiometric surface of the Upper Potomac-Raritan-Magothy aquifer, 2003

8. Potentiometric surface of the Middle and undifferentiated Potomac-RaritanMagothy aquifer, 2003

9. Potentiometric surface of the Lower Potomac-Raritan-Magothy aquifer, 2003
v

5. Water-level hydrographs for observation wells screened in the confined 

Cohansey aquifer, Cape May County, New Jersey Coastal Plain, 1978–2003.........12

6. Map showing location and amount of ground water withdrawn from the Rio Grande 

water-bearing zone, New Jersey Coastal Plain, 2003..........................................................14

7-9. Graphs showing—

7. Estimated ground-water withdrawals from the Rio Grande water-bearing zone, 

New Jersey Coastal Plain, 1978–2003............................................................................15

8. Water-level hydrographs for observation wells screened in the Rio Grande

 water-bearing zone, New Jersey Coastal Plain, 1978–2003......................................15

9. Estimated ground-water withdrawals from the Atlantic City 800-foot sand, 

New Jersey Coastal Plain, 1978–2003............................................................................16

10-11. Maps showing—

10. Location and amount of ground water withdrawn from the Atlantic City 800-

foot sand, New Jersey Coastal Plain, 2003 ...................................................................17

11. Water-level changes in the (a) Atlantic City 800-foot sand and (b) Piney Point 

aquifer, New Jersey Coastal Plain, 1998–2003 .............................................................18

12. Water-level hydrographs for observation wells screened in the Atlantic City 800-

foot sand, New Jersey Coastal Plain, 1978–2003 ..................................................................19

13. Map showing location and amount of ground water withdrawn from the Piney Point 

aquifer, New Jersey, Delaware, and Maryland Coastal Plain, 2003 ..................................22

14-17. Graphs showing—

14. Estimated ground-water withdrawals from the Piney Point aquifer, New Jersey 

Coastal Plain, 1978–2003...................................................................................................23

15. Estimated ground-water withdrawals from the Piney Point aquifer, Delaware 

Coastal Plain, 1978–2001...................................................................................................23

16. Water-level hydrographs for observation wells screened in the Piney Point 

aquifer, New Jersey Coastal Plain, 1978–2003 .............................................................25

17. Water-level hydrographs for observation wells screened in the Piney Point 

aquifer, Delaware and eastern Maryland, 1978–2003 .................................................27

18. Map showing location and amount of ground water withdrawn from the Vincentown 

aquifer, New Jersey and Delaware Coastal Plain, 2003 ......................................................28

19-20. Graphs showing—

19. Estimated ground-water withdrawals from the Vincentown aquifer, New Jersey 

Coastal Plain, 1978–2003...................................................................................................29

20. Water-level hydrographs for observation wells screened in the Vincentown 

aquifer, New Jersey Coastal Plain, 1978–2003 .............................................................29

21. Map showing location and amount of ground water withdrawn from the WenonahMount Laurel aquifer, New Jersey and Delaware Coastal Plain, 2003 .............................30

22-23. Graphs showing—

22. Estimated ground-water withdrawals from the Wenonah-Mount Laurel aquifer, 

New Jersey Coastal Plain, 1978–2003............................................................................32

23. Estimated ground-water withdrawals from the Mount Laurel aquifer, Delaware 

Coastal Plain, 1978–2001...................................................................................................32

24-25. Maps showing—

24. Water-level changes in the (a) Wenonah-Mount Laurel aquifer, (b) Englishtown aquifer system, (c) Upper Potomac-Raritan-Magothy aquifer, (d) Middle 

Potomac-Raritan-Magothy aquifer, and (e) Lower Potomac-Raritan-Magothy 

aquifer, New Jersey Coastal Plain, 1998–2003 .............................................................34
vi

25. Water-level changes in the (a) Wenonah-Mount Laurel aquifer, (b) Englishtown 

aquifer system, (c) Upper Potomac-Raritan-Magothy aquifer, (d) Middle 

Potomac-Raritan-Magothy aquifer, and (e) Lower Potomac-Raritan-Magothy 

aquifer, New Jersey Coastal Plain, 1988–2003 .............................................................35

26-27. Graphs showing—

26. Water-level hydrographs for observation wells screened in the WenonahMount Laurel aquifer in the southern counties of the New Jersey Coastal 

Plain, 1978–2003 .................................................................................................................36

27. Water-level hydrographs for observation wells screened in the WenonahMount Laurel aquifer in the northern counties, New Jersey Coastal Plain, 

1978–2003 ............................................................................................................................36

28. Map showing location and amount of ground water withdrawn from the Englishtown 

aquifer system, New Jersey Coastal Plain, 2003...................................................................38

29-30. Graphs showing—

29. Estimated ground-water withdrawals from the Englishtown aquifer system, 

New Jersey Coastal Plain, 1978–2003............................................................................39

30. Water-level hydrographs for observation wells screened in the Englishtown 

aquifer system, New Jersey Coastal Plain, 1978–2003 ...............................................41

31. Map showing location and amount of ground water withdrawn from the Upper 

Potomac-Raritan-Magothy aquifer, New Jersey, Delaware, and Maryland Coastal 

Plain, 2003 ....................................................................................................................................43

32-35. Graphs showing—

32. Estimated ground-water withdrawals from the Upper Potomac-RaritanMagothy aquifer, New Jersey Coastal Plain, 1978–2003 ............................................44

33. Estimated ground-water withdrawals from the Magothy aquifer, Delaware 

Coastal Plain, 1978–2001...................................................................................................44

34. Water-level hydrographs for observation wells screened in the Upper 

Potomac-Raritan-Magothy aquifer in the northern counties, New Jersey 

Coastal Plain, 1978–2003...................................................................................................46

35. Water-level hydrographs for observation wells screened in the Upper 

Potomac-Raritan-Magothy aquifer in the southern counties, New Jersey 

Coastal Plain and Delaware, 1978–2003 ........................................................................47

36. Map showing location and amount of ground water withdrawn from the Middle and 

undifferentiated Potomac-Raritan-Magothy aquifer, 2003 ..................................................48

37-41. Graphs showing—

37. Estimated ground-water withdrawals from the Middle and undifferentiated 

Potomac-Raritan-Magothy aquifer, New Jersey Coastal Plain, 1978–2003 ............50

38. Estimated ground-water withdrawals from the Middle Potomac-RaritanMagothy aquifer, Delaware Coastal Plain, 1978–2001.................................................50

39. Water-level hydrographs for observation wells screened in the Middle and 

undifferentiated Potomac-Raritan-Magothy aquifer in the northern counties, 

New Jersey Coastal Plain, 1978–2003............................................................................53

40. Water-level hydrographs for observation wells screened in the Middle and 

undifferentiated Potomac-Raritan-Magothy aquifer in the southern counties, 

New Jersey Coastal Plain, 1978–2003............................................................................54

41. Water-level hydrographs for observation wells screened in the Middle 

Potomac-Raritan-Magothy aquifer in Delaware and Maryland, 1978 

to 2003..................................................................................................................................55
vii

Conversion Factors, Datums, and Abbreviations

Multiply By To obtain

Length

foot (ft) 0.3048 meter (m)

mile (mi) 1.609 kilometer (km)

Area

square mile (mi2) 2.590 square kilometer (km2) 

Volume

gallon per day (gal/d) 0.003785 cubic meter per day (m3/d) 

million gallons per day (Mgal/d) 0.04381 cubic meter per second (m3/s) 

Transmissivity*

foot squared per day (ft2/d) 0.09290 meter squared per day (m2/d) 

Water -Quality Abbreviations

mg/L milligrams per liter (parts per million)

g/cm3 grams per cubic centimeter

Vertical coordinate information is referenced to the National Geodetic Vertical Datum of 1929 

(NGVD 29).

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83).

Altitude, as used in this report, refers to distance above or below the vertical datum.

*Transmissivity: The standard unit for transmissivity is cubic foot per day per square foot times 

foot of aquifer thickness [(ft3/d)/ft2]ft. In this report, the mathematically reduced form, foot 

squared per day (ft2/d), is used for convenience.

Tables

1. Geologic and hydrogeologic units of the New Jersey Coastal Plain and hydrogeologic units of the Delaware Coastal Plain..........................................................................5

2. County prefix codes used in well-numbering systems in New Jersey, Pennsylvania, 

and Maryland ................................................................................................................................9

42. Map showing location and amount of ground water withdrawn from the Lower 

Potomac-Raritan-Magothy aquifer, New Jersey, Delaware, and Maryland Coastal 

Plain, 2003 ....................................................................................................................................56

43-46. Graphs showing—

43. Estimated ground-water withdrawals from the Lower Potomac-RaritanMagothy aquifer, New Jersey Coastal Plain, 1978–2003 ............................................57

44. Estimated ground-water withdrawals from the Lower Potomac-RaritanMagothy aquifer, Delaware Coastal Plain, 1978–2001.................................................57

45. Water-level hydrographs for observation wells screened in the Lower 

Potomac-Raritan-Magothy aquifer, New Jersey Coastal Plain, 1978–2003 ............59

46. Water-level hydrographs for selected observation wells screened in the 

Lower Potomac-Raritan-Magothy aquifer, Delaware and Maryland Coastal 

Plain, 1978–2003 .................................................................................................................60

Abstract

The Coastal Plain aquifers of New Jersey provide an 

important source of water for more than 2 million people. 

Steadily increasing withdrawals from the late 1800s to the 

early 1990s resulted in declining water levels and the formation of regional cones of depression. In addition to decreasing 

water supplies, declining water levels in the confined aquifers 

have led to reversals in natural hydraulic gradients that have, 

in some areas, induced the flow of saline water from surfacewater bodies and adjacent aquifers to freshwater aquifers. In 

1978, the U.S. Geological Survey began mapping the potentiometric surfaces of the major confined aquifers of New 

Jersey every 5 years in order to provide a regional assessment 

of ground-water conditions in multiple Coastal Plain aquifers 

concurrently. In 1988, mapping of selected potentiometric 

surfaces was extended into Delaware. 

During the fall of 2003, water levels measured in 967 

wells in New Jersey, Pennsylvania, northeastern Delaware, 

and northwestern Maryland were used to estimate the potentiometric surface of the principal confined aquifers in the 

Coastal Plain of New Jersey and five equivalent aquifers in 

Delaware. Potentiometric-surface maps and hydrogeologic 

sections were prepared for the confined Cohansey aquifer of 

Cape May County, the Rio Grande water-bearing zone, the 

Atlantic City 800-foot sand, the Vincentown aquifer, and the 

Englishtown aquifer system in New Jersey, as well as for the 

Piney Point aquifer, the Wenonah-Mount Laurel aquifer, and 

the Upper Potomac-Raritan-Magothy, the Middle and undifferentiated Potomac-Raritan-Magothy, and the Lower PotomacRaritan-Magothy aquifers in New Jersey and their equivalents 

in Delaware.

From 1998 to 2003, water levels in many Coastal Plain 

aquifers in New Jersey remained stable or had recovered, but 

in some areas, water levels continued to decline as a result of 

pumping. In the Cohansey aquifer in Cape May County, water 

levels near the center of the cone of depression underlying the 

southern part of the peninsula remained about the same as in 

1998. To the south, recoveries up to 8 feet were observed in 

southern Lower Township as withdrawals had decreased since 

1998. In the northern part of Cape May County, water levels 

had not changed substantially from historic conditions. In the 

Rio Grande water-bearing zone, water levels rose by as much 

as 13 ft at the Rio Grande well field; elsewhere across the 

aquifer, little change had occurred.

In the Atlantic City 800-foot sand, water-level changes 

were greatest in southern Cape May County; at the Cape May 

desalination wells, water levels were as much as 32 ft lower in 

2003 than in 1998. In contrast, water levels at the center of a 

regional cone of depression near Atlantic City rose by as much 

as 10 ft. Within the Piney Point aquifer water levels rose by 

46 ft near Seaside Park. Similarly, water levels increased by 

more than 30 ft in and around the major cone of depression 

underlying Dover, Delaware. In the Vincentown aquifer, water 

levels stabilized or recovered by 2 ft to 6 ft from 1998 to 2003 

in most of the wells measured; the exception is near Adelphia 

in Monmouth County, where water levels rose by as much as 

18 ft.

From 1998 to 2003, water levels near the center of a large 

cone of depression that extends from Monmouth to Ocean 

County recovered by as much as 20 ft in the Wenonah-Mount 

Laurel aquifer. Concurrently, ground-water levels within the 

Englishtown aquifer system declined by as much as 13 ft in 

the same area. Water levels across much of the Upper Potomac-Raritan-Magothy aquifer in the northern Coastal Plain 

remained about the same as 5 years previous, except in northern Ocean County where ground-water levels declined 10 ft 

to 33 ft. Water levels in the Middle Potomac-Raritan-Magothy 

aquifer declined from 5 to 9 ft along the border between Monmouth and Middlesex County. Elsewhere, across the northern 

part of the Coastal Plain, water levels stabilized within the 

Cretaceous-age aquifers.

In southern New Jersey, regional cones of depression 

persist in the Potomac-Raritan-Magothy aquifer system in 

Burlington, Camden, and Gloucester Counties. From 1998 to 

2003, water levels in these large cones were generally stable 

or recovering across much of southern New Jersey; recoveries 

from 5 ft to 10 ft occurred in all three aquifers, and exceeded 

20 ft in places within the Lower aquifer. In contrast, water 

Water-level conditions in selected confined aquifers of 

the New Jersey and Delaware Coastal Plain, 2003 

By Vincent T. dePaul, Robert Rosman, and Pierre J. Lacombe
2 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

levels declined near the center of the cone of depression within 

the Lower aquifer in central Camden County. Water levels in 

the Middle Potomac-Raritan-Magothy aquifer declined by as 

much 7 ft in central New Castle County, Delaware; however, 

those within the major cone of depression in the Lower aquifer 

stabilized from 1998 to 2003. In general, water levels across 

the Wenonah-Mount Laurel aquifer recovered in Burlington, 

Camden, and Gloucester Counties from 1998 to 2003; rises of 

nearly 30 ft were observed in central Gloucester County. 

Introduction

Ground-water withdrawals from the Coastal Plain 

aquifers in New Jersey have increased steadily from less 

than 50 Mgal/d prior to 1920 to more than 300 Mgal/d in the 

late 1980s and early 1990s (unpublished data on file at the 

U.S. Geological Survey (USGS), New Jersey Water Science 

Center). As a result of extensive ground-water development, 

water levels in the confined aquifers have steadily declined, 

and regional cones of depression have formed. In addition 

to decreasing water supplies, declining water levels in these 

aquifers have caused reversals in natural hydraulic gradients. 

These reversals have induced local incursion of brackish or 

saline water from surface-water bodies and adjacent aquifers.

Prior to 1978, ground-water levels were measured 

and cones of depression were mapped in response to local 

hydrologic issues. In order to provide water-supply managers, regulators, and scientists with a regional assessment of 

ground-water conditions in multiple aquifers as well as insight 

into past and future water-management practices, the USGS, 

in cooperation with the New Jersey Department of Environmental Protection (NJDEP), initiated a plan in 1978 to map 

the potentiometric surfaces of the major confined aquifers on a 

5-year cyclical basis. In 1988, the plan of study was expanded 

to include water-level measurements in Delaware in order 

to better define cones of depression that propagated beneath 

the Delaware River and Bay. In 1998, wells in northeastern 

Maryland were added to the plan to further define the cones 

of depression in Delaware. To date potentiometric surfaces in 

1978, 1983, 1988, 1993, and 1998 have been mapped. 

 In 1985, concern over the long-term decline in water 

levels in areas where ground water was the primary source of 

supply prompted the NJDEP to designate two water supply 

Critical Areas in the New Jersey Coastal Plain; Critical Area 1 

(CA 1) is in the east-central part of the State, and Critical Area 

2 (CA 2), is in the Camden area. Each Critical Area comprises 

a depleted zone and a threatened margin. The boundary of the 

depleted zone corresponds to the average 30-ft below potentiometric contour (referenced to the National Geodetic Vertical 

Datum of 1929 (NGVD 29)) in each of the specified aquifers, 

based on the 1983 maps by Eckel and Walker (1986), and is 

composited at land surface (fig. 1). A 3-mi margin, known 

as the threatened margin, surrounds the depleted zone and 

addresses the potential for saltwater intrusion as a result of the 

decline in water levels. 

CA 1, designated in 1985, encompasses parts of Middlesex, Monmouth, and Ocean Counties (fig. 1). Withdrawal 

restrictions for CA 1 apply to the Wenonah-Mount Laurel 

aquifer, the Englishtown aquifer system, and the Upper and 

Middle Potomac-Raritan-Magothy (PRM) aquifers. Groundwater withdrawals from production wells within the depleted 

zones of the Wenonah-Mount Laurel aquifer, the Englishtown 

aquifer system, and the Middle PRM aquifer were reduced 

by 50 percent of 1983 volumes, whereas those in the Upper 

PRM were reduced by 40 percent of 1983 volumes. Within 

the threatened margin, allocated withdrawals remain at 1983 

volumes (New Jersey Administrative Code, 2005). Withdrawal 

restrictions in CA 1 were implemented in 1989, but because 

access to alternate water supplies was not initially available, 

compliance by most individual purveyors was deferred until 

1991. 

 In an effort to stabilize declining water levels and retard 

the movement of saltwater from Gloucester County and 

downdip areas toward the Camden area cone of depression, 

CA 2 was designated in early 1993. The management area 

encompasses Camden, most of Burlington and Gloucester, and 

parts of Atlantic, Cumberland, Ocean, Monmouth, and Salem 

Counties (fig. 1), although regulations are most relevant to the 

first three counties. Restrictions on ground-water withdrawals 

apply only to the aquifers of the Potomac-Raritan-Magothy 

system and began in 1996. Ground-water withdrawals in the 

depleted zone were reduced by an average of 22 percent relative to 1983 volumes, whereas, within the threatened margin, 

withdrawals are limited to the maximum annual volume 

between 1983 and 1991 (New Jersey Administrative Code, 

2005). 

Specific water-supply measures introduced to curtail 

ground-water withdrawals include the use of the Manasquan 

Reservoir, completed in 1990 in Critical Area 1, which can 

supply the region with approximately 30 Mgal/d of surface 

water (New Jersey Water Supply Authority, 2005). The 

Tri-County Pipeline in Critical Area 2 began operation in 

1996 and provides water from the Delaware River to users in 

Burlington, Camden, and Gloucester Counties. Reductions in 

ground-water withdrawals along with the use of these alternative surface-water sources have resulted in substantial rises in 

water levels in these State-regulated Critical Areas.

Purpose and Scope

The purpose of this report is to document ground-water 

levels and regional potentiometric surfaces during 2003 for 

10 confined aquifers of the New Jersey Coastal Plain and 5 

equivalent aquifers in northern Delaware. Selected hydrographs illustrate seasonal variations and the long-term effects 

of ground-water withdrawals. This report includes estimated 

water withdrawals from the 10 confined aquifers in New 

Jersey for 1978–2003. Withdrawals also are reported for the 
Data Collection and Analysis 3

five equivalent aquifers in Delaware for 1978–2001. Basic 

well-characteristic and water-level data from 1978 to 2003 

are presented in the appendixes. This report is the sixth in the 

series of reports that show the potentiometric surfaces for the 

major confined aquifers of the New Jersey Coastal Plain.

Description of Study Area

The study area (fig. 1) is about 7,700 mi2 and encompasses the Coastal Plain of New Jersey and Pennsylvania, the 

Delaware Bay, and parts of the Coastal Plain in Maryland and 

Delaware, as well as the nearshore areas of both New Jersey 

and Delaware. The area of study focuses on Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester, Monmouth, 

Ocean, Salem, and parts of Mercer and Middlesex Counties 

in New Jersey; Kent and New Castle Counties in Delaware; 

parts of Philadelphia County in Pennsylvania; and Cecil, 

Kent, Queen Anne’s, and Caroline Counties in Maryland. The 

New Jersey counties of Mercer, Middlesex, Monmouth and 

Ocean are referred to in this report as the northern counties; 

the remaining counties within the State are referred to as the 

southern counties.

Hydrogeologic Framework

The Coastal Plain Province of New Jersey and Delaware 

consists of a southeastward dipping and thickening wedge of 

unconsolidated deposits of sand, silt, and clay of Cretaceous 

to Tertiary age underlain by basement rocks and overlain by 

a veneer of locally occurring Quaternary sediments. Coastal 

Plain sediments were deposited in various shelf, marginal 

marine, nearshore or coastal beach, and deltaic environments, 

the extent of which fluctuated in response to relative changes 

in sea level. Units composed of distinctly less permeable 

sediments (predominantly clays and fine-grained silts) form 

the confining units, and the more permeable sand units form 

the aquifers. These deposits are less than 50 ft thick along 

the western limit of the Coastal Plain (Fall Line) and thicken 

to more than 6,500 ft in southern Cape May County. Coastal 

Plain sediments of Cretaceous and Tertiary age generally 

strike northeast-southwest and dip 10 to 60 ft/mi to the southeast (Zapecza, 1989); overlying Quaternary deposits are flat. 

Many of these units crop out near the Fall Line parallel to 

strike, transitioning into unconfined aquifers; others such as 

the Piney Point aquifer are wholly confined within the study 

area. Abundant freshwater available from these aquifers has 

enabled the development of many areas within the Coastal 

Plain by a large population.

The aquifers and confining units discussed in this report 

range in age from Cretaceous to Tertiary (table 1). A brief 

description of each aquifer is included in each section; for a 

more detailed discussion, Zapecza (1989) describes the hydrogeology of New Jersey and Vroblesky and Fleck (1991), the 

hydrogeology of Delaware and Maryland. Sections A-A', B-B', 

and C-C' in figure 2a–c show the relative positions of the aquifers and confining units in the northern, central, and southern 

New Jersey Coastal Plain.

Well-Numbering System

The well numbering system used in this report consists 

of a county code number followed by a sequence number for 

wells within that county. For example, well number 15-123 

is the 123rd well inventoried in Gloucester County. The codes 

for New Jersey, Pennsylvania, and Maryland Counties used 

in this report are listed in table 2. Well identifiers in Delaware 

are assigned by the Delaware Geological Survey and are 

numbered on the basis of a coordinate system using 5-minute 

quadrangles of latitude and longitude.

Previous Investigations

Previous potentiometric-surface maps in this series show 

ground-water levels in the study area at 5-year intervals from 

1978 through 1998: 1978, Walker (1983); 1983, Eckel and 

Walker (1986); 1988, Rosman and others (1996); and 1993 

and 1998, Lacombe and Rosman (1997, 2001). This series is 

supplemented by water-table maps for the unconfined aquifers 

within the following basins of the New Jersey Coastal Plain: 

Mullica River Basin (Johnson and Watt, 1996); Salem River, 

Raccoon, Oldmans, Alloway, and Stow Creek Basins (Johnson 

and Charles, 1997); Upper Maurice River Basin (Lacombe 

and Rosman, 1995); Great Egg Harbor River Basin (Watt and 

Johnson, 1992); Rancocas, Crosswicks, Assunpink, Blacks 

and Crafts Creek Basins (Watt and others, 2003); and the 

Toms River, Metedeconk River, and Kettle Creek Basins (Watt 

and others, 1994).

Data Collection and Analysis

Static water-level altitudes were measured in 881 wells in 

New Jersey, Pennsylvania, and Maryland by USGS personnel. 

Water levels were measured in an additional 86 wells in Delaware by Delaware Geological Survey personnel. Water levels, 

which were measured during late October to mid-December 

2003, approximate annual average water levels in the study 

area. Low water levels typically occur during the late summer and early fall, and high water levels are observed during 

spring. 

Water levels were measured in industrial-, commercial-, 

irrigation-, and domestic-supply wells, production wells, and 

observation wells; wells were chosen on the basis of areal 

distribution within each aquifer. Water-level altitudes were 

measured using steel or electric measuring tapes, which are the 

most accurate devices, or by using an airline, which is the least 

accurate. Because accuracies of 1 ft or less are not typical, 

the airline method was used in limited instances and only at 

sites that were inaccessible for measuring by either electric or 

steel tape. Measurements made at observation wells represent 
4 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

75°30' 75° 74°30' 74°

40°

30'

40°

39°

30'

39°

Base from U.S. Geological Survey digital data, 1:24,000 

Universal Transverse Mercator Projection, Zone 18, NAD 83

0 5 10 20 MILES

0 5 10 20 KILOMETERS

OCEAN

ATLANTIC

BURLINGTON

SALEM

MONMOUTH

CUMBERLAND

HUNTERDON

MIDDLESEX

CAPE MAY

MERCER

SOMERSET

GLOUCESTER

CAMDEN

UNION

MORRIS HUDSON

Dover

Buena

Camden

Avalon

Berlin

Trenton

Matawan

Marlton

Lakewood

Freehold

Red Bank

Cape May

Wildwood

Vineland

New Egypt

Eatontown

Princeton Jamesburg

Keansburg

Millville

Bridgeton

Hammonton Tuckerton

Glassboro

Toms River Lavallette

Hightstown

Sea Bright

Sayreville

Rio Grande

Ocean City

Brigantine

Manahawkin

Wilmington

Spring Lake

Asbury Park

Long Branch

Beach Haven

Ship Bottom

Browns Mills

Stone Harbor

Margate 

City

Ventnor City

Mays 

Landing

Forked River

Seaside Park

New Brunswick

Atlantic City

Pleasantville

Medford Lakes

Point Pleasant

East Brunswick

Barnegat Light

Egg Harbor City

Atlantic Highlands

Spring Lake 

Heights

Point Pleasant Beach

Cape May 

Court House

PENNSYLVANIA

DELAWARE

PHILADELPHIA

NEW YORK

NEW 

CASTLE

KENT A T L A N T I C

O C E A

N

D E L A W A R E 

B A Y

MARYLAND

KENT

CECIL

QUEEN

ANNES

R A R I T A N

B A Y

Fall Line

CAROLINE

Delaware

River

NEW JERSEY

BUCKS

Critical Area 1

Critical Area 2

A

B A'

B'

C

C'

EXPLANATION

C C'

Study area

Critical Area–From New

Jersey Department of 

Environmental Protection 

(unpublished). Boundary is 

approximate and should not 

be used for regulatory

compliance purposes.

Depleted zone

Threatened margin

Line of hydrogeologic 

section

Figure 1. Location of the study area, New Jersey and Delaware Coastal Plain.
Data Collection and Analysis 5

SYSTEM SERIES GEOLOGIC UNIT NEW JERSEY HYDROGEOLOGIC UNIT DELAWARE HYDROGEOLOGIC UNIT

Quaternary

Holocene Alluvial deposits Undifferentiated

Beach sand and gravel

Pleistocene Cape May Formation Columbia group

Tertiary

Miocene

Chesapeake Group

Bridgeton Formation

Beacon Hill Gravel

Confining unit

Kirkwood Formation

Frederica aquifer

Confining unit

Rio Grande water-bearing zone Confining unit

Atlantic City 800-foot sand

Composite confining unit

Eocene

Piney Point aquifer Piney Point aquifer

Paleocene

Cretaceous

Upper Cretaceous

Confining unit

Red Bank Sand Red Bank Sand

Mount Laurel Sand

Mount Laurel aquifer

Confining unit Marshalltown Formation

Confining unit

Upper aquifer

Confining unit Confining unit

Middle aquifer Upper and Middle Potomac aquifers

Potomac group

Confining unit Confining unit

Lower Cretaceous Lower aquifer Lower Potomac aquifer

Pre Cretaceous Bedrock Bedrock confining unit Bedrock confining unit

Kirkwood-Cohansey

aquifer system

Pennsauken Formation

Kirkwood-Cohansey

aquifer system

Pocomoke aquifer

Cohansey Sand

Manokin aquifer

Cohansey aquifer

"Upper" Wildwood-Belleplain confining unit Federalsburg aquifer

"Lower" Wildwood-Belleplain confining unit Cheswold aquifer

Manasquan Formation

Vincentown Formation Vincentown aquifer Rancocas aquifer

Hornerstown Sand Hornerstown Sand*

Tinton sand

Navesink Formation

Wenonah-Mount Laurel aquifer

Wenonah Formation

Marshalltown-Wenonah confining unit

Englishtown Formation Englishtown aquifer system Englishtown aquifer

Woodbury Clay Merchantville-Woodbury confining unit

Merchantville Formation

Magothy Formation

Potomac-Raritan-Magothy

aquifer system

Magothy aquifer

Raritan Formation

Modified from Zapecza; 1989, Sugarman, 2001

Oligocene Piney Point

Formation

Shark River

Formation

Table 1. Geologic and hydrogeologic units of the New Jersey Coastal Plain and hydrogeologic units of the Delaware Coastal Plain. 

[Shaded units are those discussed in this report; *, not designated as a formal aquifer by Zapecza (1989)]
6 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 40 60 80 ?

?

?

100 120

140

20

-20

-40

60

100

0

-20

-100

-10

-80

-60

-40

80

40

?

12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44

-1000-1100-1200-1300-1400-1500-1600-1700

-100-200-300-400-500-600-700-800-900

0

300200100

sant Plea t in Po

d Freehol

Fall Line

Bedrock

A A'

p hi ll Towns HoweLand surface

ALTITUDE, IN FEET

0 2 4 6 8 10

DISTANCE, IN MILES

Vincentown aquifer 

Englishtown aquifer system

Kirkwood-Cohansey 

aquifer system

Wenonah-Mount Laurel aquifer

Upper Potomac-Raritan-Magothy aquifer

Mlddle Potomac-Raritan-Magothy 

aquifer

Atlantic Ocean

EXPLANATION

Confining unitFreshwater zone of aquiferSaltwater zone of aquiferPotentiometric contour–Shows altitude at which water would have stood in a tightly cased well. Contourinterval is variableGeneralized ground-water flow direction

0

Bedrock

0

20

40

0

60

-20

-2

Figure 2a. Section A-A’ showing potentiometric-surface contours in aquifers of the northern New Jersey Coastal Plain, 2003.
Data Collection and Analysis 7

-1000-1100-1200

-100-200-300-400-500-600-700-800-900

0

300200100

140 120 100 80 60 60 60 60

60

100

80

?40

Berlin

Hammonton

Egg Harbor City 

Pleasantville

Camden

?20 0

0

?0

120

140

-60

-40

-20

-60

0

20

40

40

20

20

20 40

0

0

0

-20

-40

-60

-60

-40

-80

-80

0

-20

-20

B B'

60 60

Vincentown aquifer 

Englishtown aquifer system

Kirkwood-Cohansey 

aquifer system

Wenonah-Mount Laurel aquifer

Upper Potomac-Raritan-Magothy aquifer

Mlddle Potomac-Raritan-Magothy 

aquifer Lower Potomac-Raritan-Magothy aquifer

Piney Point aquifer

Rio Grande water-bearing zone

Atlantic City 800-ft sand

Limited framework 

data

Limited framework 

data

Atlantic Ocean

Delaware River Land surface

ALTITUDE, IN FEET

12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 0 2 4 6 8 10

DISTANCE, IN MILES

46 48 50 52 54 56 58 60 62 64

Limited framework 

data

EXPLANATION

Confining unit

Freshwater zone of aquiferSaltwater zone of aquiferPotentiometric contour–Shows 

altitude at which water would have 

stood in a tightly cased well. Contour

interval is variable

Generalized ground-water flow direction

0

Bedrock

-20

-40

-60

Figure 2b. Section B-B’ showing potentiometric-surface contours in aquifers of the southern New Jersey Coastal Plain, 2003. 
8 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

only about 33 percent of the network; in order to maximize 

the geographic distribution and to capture low water levels 

associated with withdrawals, the network was augmented with 

production wells. To ensure that water levels in production 

wells closely represented static conditions, pumps were turned 

off for a minimum of 1 hour before measurement of the water 

level in the well. In addition, nearby pumping was controlled 

at the time of measurement; pumps in all other high-capacity 

production wells screened in the same aquifer within 0.25 mi 

of the measured well were turned off for at least 1 hour prior 

to measurement of the water level. In accordance with USGS 

methods for the collection of water-level data, measurements 

were made in each well until two consecutive and similar measurements were obtained at least 5 minutes apart. The resulting 

water-level measurement was considered representative of the 

local static conditions.

Ground water in four of the observation wells measured 

in this study had chloride concentrations in excess of 

5,000 mg/L. Water levels in these wells were converted from 

a measured saltwater hydraulic head to a calculated freshwater head. The conversion equation follows a modification of 

the Ghyben-Herzberg relation (Todd, 1980) to determine the 

equivalent length of freshwater in a well filled with saltwater:

l

f

 = (ps / pf )ls , (1)

where l

f

 is length of the freshwater column in the well 

casing, ps is the density of saltwater, pf is the density of freshwater, and l

s

 is the length of saltwater column in the well casing. The density of freshwater is 1.00 g/cm3

, and the density of 

the saltwater increases with increasing solute concentrations. 

The measured water levels and the freshwater equivalents are 

presented in the appendixes of the report.

The water level in a well represents the hydraulic head in 

the screened part of the aquifer. Hydraulic heads at each well 

were calculated by subtracting the water level, in feet below 

land surface, from the land-surface altitude, in feet above 

NGVD 29. In confined aquifers, this level stands above the top 

of the aquifer as a result of an increase in pressure with depth 

and the presence of overlying, relatively impermeable strata. 

Maps then were constructed depicting the areal distribution of 

hydraulic head within each aquifer; lines of equal hydraulic 

head are represented on these maps by potentiometric-surface 

contours. From these maps ground-water flow in each aquifer 

can be inferred, as flow is from areas of high to low hydraulic 

head and is assumed to be perpendicular to the potentiometricsurface contours. Although most of the data used in this study 

are composed of measurements made in the confined parts 

Holly Beach water-bearing zone 

Estuarine sand aquifer

Cohansey aquifer

Atlantic City 800-ft sand

Rio Grande water-bearing zone

0

-10

-20

0

0 10

-10

-20

-30

EXPLANATION

Confining unit

Freshwater zone of aquifer

Saltwater zone of aquifer

Potentiometric contour–Shows 

altitude at which water would 

have stood in a tightly cased 

well. Contour interval is variable

Generalized ground-water flow 

direction

0

-1200

-1100

-1000

-900

-800

-700

-600

-500

-400

-300

-200

-100

0

100

C C' Rio Grande Wildwood Crest Pumping station

Land surface

ALTITUDE, IN FEET

0 2 4 6 8 10 12 14 16 18

Delaware Bay Atlantic Ocean

DISTANCE, IN MILES

Figure 2c. Section C-C’ showing potentiometric-surface contours in aquifers of Cape May County, New Jersey Coastal Plain, 2003. 
Cohansey Aquifer 9

of the aquifers, in some cases, measurements made in the 

unconfined parts are included in order to guide placement of 

potentiometric contours at the aquifer outcrops. 

In 2003, a concerted effort was made to improve the 

locational accuracy, as well as the accuracy of land-surfacealtitude data at measurement sites by using Global Positioning 

System (GPS). GPS was used at more than 350 sites in the 

field, and resulting locations were compared with those stored 

in the Ground Water Site Inventory (GWSI) database in the 

USGS New Jersey Water Science Center. Where GPS was 

not available, other checks were accomplished by comparing 

well locations with those in the NJDEP Public Community 

Water Supply (PCWS) database and land-surface-altitude data 

with those derived from the Digital Elevation Model (DEM) 

10-meter grid of New Jersey (U.S. Geological Survey, 1999). 

Well locations and land-surface altitudes updated during this 

study are noted in the data tables for each aquifer, and waterlevel altitudes for previous studies were adjusted accordingly. 

In this report, the term “observation well” refers not only 

to the original use of the well but to wells that had not been 

pumped during the 7 days prior to measurement. In addition, 

“production well” means a well that had not been pumped in 

the hour before water-level measurement but may have been 

pumped during the previous 7 days. In previous reports the 

term “observation well” referred to a well that had not been 

pumped within 24 hours prior to measurement. Because of 

widely varying characteristics among the aquifers within the 

study area, the residual effects of pumping also differ greatly, 

and therefore, this “idle period” for observation-well classification was lengthened to greater than 7 days.

The location of the 10,000-mg/L line of equal chloride 

concentration (hereafter referred to as isochlor) was estimated 

for each major aquifer in the New Jersey Coastal Plain by 

use of the USGS SHARP computer model (Pope and Gordon, 1999). The SHARP model is a quasi-three-dimensional 

finite-difference code that can be applied to layered coastal 

aquifer systems to simulate both fresh and saltwater flow 

separated by a sharp interface (Essaid, 1990). The represented 

locations of the 10,000-mg/L isochlors for the aquifers of the 

Delaware Coastal Plain are based on maps by Vroblesky and 

Fleck (1991). The location of the 250-mg/L isochlor, which 

designates the limit of potable water in each aquifer as defined 

by NJDEP secondary drinking-water standards (New Jersey 

Administrative Code, 2004), is based on published maps that 

are cited for each aquifer. Modifications were made to these 

lines as water-quality data warranted. If no map was available 

to show the location of the 250-mg/L isochlor in a particular 

aquifer, the line was determined from chloride data stored in 

the USGS Water Quality Data Base. 

Ground-water withdrawal data cited in this report were 

obtained largely from unpublished sources, including files of 

the USGS New Jersey and Maryland Water Science Centers 

as well as the Delaware Department of Natural Resources and 

Environmental Control.

Cohansey Aquifer

The Cohansey aquifer in Cape May County is composed 

of gravel and coarse- to fine-grained sands and includes the 

lower part of the Cohansey Formation and the sand-rich uppermost section of the Kirkwood Formation (Zapecza, 1989). 

Within the study area Pleistocene deposits of sand and clays 

overlie the Cohansey aquifer, providing effective confinement 

from surficial recharge. In northern Cape May County, the 

Cohansey aquifer underlies the Holly Beach water-bearing 

zone and is confined by a singular unit, whereas in the southern part of the county two intervening confining units and 

the estuarine sand aquifer overlie the aquifer. The aquifer in 

Cape May County ranges in thickness from 50 ft near Ocean 

City to more than 150 ft near the southern tip of the peninsula 

(Lacombe and Carleton, 2002). The updip limit of the confined aquifer is approximately along a north-northeast trending 

line from the Delaware Bay to eastern Cumberland County, 

and the northernmost limit of confinement is in northern Cape 

May County, approximately bounded by the Tuckahoe River.

Water Withdrawals and Extent of Freshwater

The distribution of withdrawals from the Cohansey aquifer in Cape May County is shown in figure 3. The major users 

during 2003 withdrew water primarily for public supply with 

minor amounts for both industrial and irrigation purposes; 

most of these withdrawals occurred in the southern part of the 

peninsula in upland areas of Middle and Lower Townships. 

From 1978 to 2003, estimated ground-water withdrawals from 

the Cohansey aquifer ranged from 4.3 to 6.9 Mgal/d, with the 

maximum volume withdrawn in 1982 (fig. 4). Withdrawals 

from the aquifer were greatest during the 1980s when average daily ground-water withdrawals were in excess of 6 Mgal; 

with subsequent reductions in the early 1990s, the volume 

Table 2. County prefix codes used in well-numbering systems 

in New Jersey, Pennsylvania, and Maryland.

County name Code County name Code

New Jersey

Atlantic 01 Mercer 21

Burlington 05 Middlesex 23

Camden 07 Monmouth 25

Cape May 09 Ocean 29

Cumberland 11 Salem 33

Gloucester 15

Pennsylvania

Philadelphia P

Maryland

Cecil CE

Caroline CO
10 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

decreased to approximately 5 Mgal/d. Withdrawal volumes 

increased again during 1996–98, but decreased thereafter with 

the introduction of the Atlantic City 800-foot sand desalination 

wells. During 2003 withdrawals from the Cohansey aquifer 

totaled 4.8 Mgal/d. In 2003, the Wildwood Water Department, 

the largest user of ground water from the Cohansey, withdrew 

an average of nearly 3 Mgal/d. Much of these withdrawals 

were concentrated at the pumping station at Rio Grande and 

accounted for nearly 62 percent of all withdrawals from the 

aquifer in 2003. The second largest user of the Cohansey aquifer, Lower Township Municipal Utilities Authority (MUA), 

accounted for an additional 1.2 Mgal/d. Withdrawals by these 

utilities remained relatively constant from 1978 to 2003; however, substantial reductions after 1998 occurred in Cape May 

City farther to south.

The Cohansey aquifer contains freshwater throughout 

most of the extent underlying mainland Cape May County; 

however, saltwater is present in the aquifer beneath the 

extreme southern part of the peninsula, beneath the back bays 

and barrier islands north of Wildwood and south of Strathmere, and beneath near- and offshore areas of the Atlantic 

Ocean and the Delaware Bay (pl 1). Additionally, salt water 

has migrated into freshwater portions of the aquifer along the 

western coast of the peninsula. The 250-mg/L isochlor, originally mapped by Gill (1962) and updated by Lacombe and 

Rosman (2001) and Lacombe and Carleton (2002), has moved 

farther inland in the Villas area as indicated by the rapidly 

changing chloride concentrations observed in well 09-187, 

which increased from 190 mg/L in 1996 to 650 mg/L in 2003. 

A sample collected in early 2005 yielded a dissolved chloride 

concentration of 800 mg/L.

Water Levels

Water-level altitudes for 51 wells screened within the 

Cohansey aquifer (appendix 1) were used to map the 2003 

potentiometric surface (fig. 1–1 on pl. 1). Previous studies 

in this series mapped the potentiometric surface underlying 

only the southern half of the Cape May peninsula; in 2003, 

additional confined Cohansey wells in the central and northern 

parts of Cape May County were added to the study. Waterlevel altitudes measured for all newly added wells ranged from 

9 to 34 ft above NGVD 29. The configuration of the potentiometric surface in this area closely mimics that described by 

Gill (1962); a potentiometric high of greater than 30 ft is present near the northwestern limit of the confined aquifer from 

which ground water flows downdip and to the east, discharging to the Tuckahoe River and offshore to back bays and the 

Atlantic Ocean (fig. 1–1 on pl. 1). The maximum water-level 

altitude within the aquifer was 34 ft at well 09-325, located 

near the northwestern limit of the confined aquifer. The 

potentiometric map also shows a regional cone of depression 

centered at the major withdrawal locations in the southern 

part of the peninsula, encompassing all of Lower Township, 

Cape May, and West Cape May, as well as large portions of 

Middle Township and Wildwood Crest. The minimum water 

level observed near the center of this cone was -22 ft NGVD 

29. The position of the -10-ft contour has shifted slightly to the 

north and east from its position in 1998; reductions in withdrawals at the Cape May City wells have moderated the cone 

of depression in this area.

Within the regional cone, water levels remained stable or 

had recovered relative to those observed during the previous 

study. At the center of the cone of depression and to the north, 

water levels typically had not changed from 1998, whereas 

those south of the Cape May Canal recovered from 3 ft to as 

much as 8 ft. Water level rises of 4 and 5 ft at wells 09-54 

and 09-52, respectively, located near the western edge of the 

cone of depression, may correspond to moderate reductions 

in ground-water withdrawals in this area. Rises in water-level 

altitudes as great as 7 ft, resulting from substantial reductions 

(approximately 75 percent) in withdrawals that have occurred 

since 1998, were observed at the Cape May City wells in 

southern Lower Township. Recovering water levels in observation wells to the south in Cape May City, as well as in West 

Cape May also were attributed to these reductions.

Section C-C' (fig. 2c) shows a downward hydraulic 

gradient from the overlying estuarine sand aquifer to the 

Cohansey aquifer. A recent potentiometric surface has not 

been constructed for the estuarine sand aquifer; the potentiometric surface shown in figure 2c is based on previous work 

by Lacombe and Carleton (2002). Along the same section, 

a downward gradient from the Cohansey aquifer to the Rio 

Grande water-bearing zone also is present. The potential for 

downward flow is greatest in the northern part of the county, 

and weakens toward the southern tip of the peninsula.

Hydrographs for three observation wells located within 

the regional cone of depression at the southern end of the Cape 

are shown in figure 5. The hydrographs indicate that water levels in all three wells stood at or below 0 ft NGVD 29 since the 

initial study in 1978. Water levels have fluctuated as much as 

19 ft seasonally; wells 09-60 and 09-150 are located closest to 

pumping centers and show the greatest variability. Water levels 

in well 09-80, located farthest from a pumping center near the 

northeast boundary of the cone of depression, show seasonal 

fluctuations from 5 to 7 ft. From 1978 to 2003, the annual high 

water levels at this well were at or slightly below 0 ft NGVD 

29, whereas at the end of the summer pumping season, water 

levels generally had declined to -7 to -9 ft. During this 25-year 

period, water levels declined only about 2 ft. The hydrograph 

of observation well 09-150, which is located near the southern 

tip of the Cape, shows that water levels rose from 1979 to the 

mid-1980s, stabilized through to the mid-1990s, then rose 

again through 2003. The increase in water levels in this well 

during 1979-86 resulted from the abandonment of two nearby 

industrial supply wells (Lacombe and Carleton, 2002); the 

rising water level as well as the smaller fluctuations observed 

at the latter end of the hydrograph were a result of reduced 

withdrawals by the city of Cape May. Well 09-60, is located 

in northern Lower Township less than 1 mi from the major 

pumping center at Rio Grande. The hydrograph indicates that 
Cohansey Aquifer 11

annual high water levels were typically -10 to -12 ft NGVD 

29, and summer water levels ranged from 4 to 19 ft below the 

annual highs. Withdrawals from the nearby pumping center 

remained nearly constant from 1980 through 2003 at approximately 3.3 Mgal/d; consequently, the water levels in this well 

do not indicate either a distinct upward or downward trend.

CAPE MAY

CUMBERLAND

ATLANTIC

D E L A W A R E 

B A Y

Avalon

Cape May

Wildwood

Rio 

Grande

Ocean City

Stone 

Harbor

Strathmere

Wildwood Crest

Villas

75° 74°45'

39°

15'

39°

0 1 2 3 4 5 MILES

0 1 2 3 4 5 KILOMETERS

Middle Township

Upper Township

Lower Township

A

T L A

N

T I C

O

C

E

A

N

Base from U.S. Geological Survey digital data, 1:24,000

Universal Transverse Mercator Projection, Zone 18, NAD 83

1 - 99

100 - 199

200 - 299

300 - 399

Greater than or

equal to 400

EXPLANATION

Water withdrawal, in 

million gallons per year

Figure 3. Location and amount of ground water withdrawn from the confined Cohansey aquifer, Cape May County and vicinity, 

New Jersey Coastal Plain, 2003.

Y

0

2

4

6

8

10

WATER WITHDRAWALS,

IN MILLION GALLONS PER DAY

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

YEAR

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

Figure 4. Estimated ground-water withdrawals from the confined Cohansey aquifer in Cape May County, New Jersey Coastal Plain, 

1978–2003.
12 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

Rio Grande Water-Bearing Zone

The Rio Grande water-bearing zone, as described by 

Zapecza (1989), is a relatively thin unit composed of coarseto fine-grained sand situated midway within the confining bed 

that overlies the Atlantic City 800-foot sand. The updip extent 

of the Rio Grande water-bearing zone is generally coincident 

with that of the Atlantic City 800-foot sand; a line demarcating 

this limit extends from southern Ocean through eastern Cumberland County (fig. 1–2 on pl 1). The downdip limit of the 

aquifer is offshore and east of Ocean, Atlantic, and Cape May 

Counties. The Rio Grande water-bearing zone is generally 

40 ft thick throughout its extent in coastal Ocean and Atlantic Counties (Zapecza, 1989) but thickens considerably in 

southeastern Cape May where, near Stone Harbor, it is as great 

as 170 ft thick (Lacombe and Carleton, 2002). Mapping of the 

potentiometric surface of this aquifer was initially included in 

the 1998 study. This aquifer is not present in Delaware.

Water Withdrawals and Extent of Freshwater

The Rio Grande water-bearing zone is of minor importance as a source of potable water in New Jersey. Withdrawals 

are made primarily by water purveyors in Long Beach and 

Little Egg Harbor Townships in southern Ocean County and 

in Middle Township in Cape May County (fig. 6). Additionally, several local wells withdraw water from the aquifer, 

although the amounts are not thought to be substantial; these 

wells are scattered primarily throughout Cape May and eastern 

Cumberland Counties. Estimated withdrawals from 1978 to 

2003 averaged less than 1 Mgal/d; withdrawals in 2003 were 

approximately 0.6 Mgal/d (fig. 7). Withdrawal amounts were 

apportioned equally between Ocean and Cape May Counties 

from 1978 to 1988 (approximately 0.3 to 0.4 Mgal/d); thereafter, withdrawals generally were greater in Cape May County.

The location of the 250-mg/L isochlor is from Lacombe 

and Rosman (2001); limited data compiled following the 1998 

study do not warrant a modification of this line. Fresh ground 

water is present within the aquifer underlying coastal regions 

of the mainland and the barrier islands from its northwestern 

limit in southern Ocean County southward through most of 

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

-15

-10

-5

0

5

-30

-20

-10

0

-30

-20

-10

0

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

YEAR

WATER-LEVEL ALTITUDE, IN FEET REFERENCED TO NGVD 29

09-80

09-60

09-150

1978 

Figure 5. Water-level hydrographs for observation wells screened in the confined Cohansey aquifer, Cape May County, New Jersey 

Coastal Plain, 1978–2003.
Atlantic City 800-Foot Sand 13

mainland Cape May County. The aquifer contains salty water 

south of the canal in southern Cape May County and likely 

beneath the back bays, barrier islands, and nearshore areas 

along the Atlantic Coast from Avalon to the city of Cape May. 

The location of the 10,000-mg/L isochlor has not been determined but may be at or near the location of the 10,000-mg/L 

isochlor in the underlying Atlantic City 800-foot sand.

Water Levels

Water-level data collected at 13 wells screened in the 

Rio Grande water-bearing zone (appendix 1) were used to 

construct the 2003 potentiometric surface (fig. 1–2 on pl. 1). 

The potentiometric-surface map shows an elongated cone of 

depression centered under the barrier island communities of 

coastal New Jersey from the Cape May peninsula northward 

to Ship Bottom in southern Ocean County. Water levels within 

the Rio Grande water-bearing zone ranged from a low of 

-33 ft (well 09-67) in southern Cape May to a maximum of 

34 ft NGVD 29 (well 01-219) in central Atlantic County. As 

noted by Lacombe and Rosman (2001), the shape and magnitude of the regional cone of depression results from induced 

leakage due to withdrawals and depressed heads within the 

underlying Atlantic City 800-foot sand. Locally, withdrawals 

at the Rio Grande well field in southern Cape May may be 

contributing to the low water levels in this vicinity.

Water levels at the Rio Grande well field rose by as much 

as 13 ft (app. 1) subsequent to the 1998 study owing to a 

25-percent reduction in ground-water withdrawals. Elsewhere, 

little change has occurred in the potentiometric surface. 

There is a downward hydraulic gradient from the Rio 

Grande water-bearing zone to the Atlantic City 800-foot 

sand as shown in section B-B’ (fig. 2b); Lacombe and Rosman (2001) also indicate a downward vertical gradient 

from the overlying water-table aquifer into the Rio Grande 

water-bearing zone. Along section C-C', a downward vertical 

gradient from the Cohansey aquifer to the Rio Grande waterbearing zone is evident; this downward gradient strengthens 

to the northeast of this line and weakens toward the tip of the 

peninsula (fig. 2c). Along the same section an upward vertical gradient from the Atlantic City 800-foot sand to the Rio 

Grande water-bearing zone is present in the area of the Rio 

Grande well field; however, farther to the southeast, the gradient again reverses and is downward to the underlying Atlantic 

City 800-foot sand. 

Hydrographs for two observation wells located in Cape 

May County are shown in figure 8. Data were collected intermittently at these two wells, and distinct long-term trends are 

difficult to evaluate. For 1990 to 1993, when data are denser, 

seasonal fluctuations are evident in both wells. These fluctuations are more pronounced in well 09-71 than in well 09-304 

and range from 8 to 20 ft. Well 09-71 is located near production wells at the Rio Grande well field and the fluctuations 

reflect greater withdrawals during the summer tourist season. 

The most recent water-level data collected at well 09-71 indicate a rise in water levels from late 1991 to December 2003 of 

approximately 24 ft.

Atlantic City 800-Foot Sand

The Atlantic City 800-foot sand as defined by Zapecza 

(1989) is composed of medium- to coarse-grained quartz 

sands with interspersed shell material. The aquifer is confined 

throughout its extent. The updip limit of the aquifer is based 

on the updip limit of the overlying confining unit and extends, 

from northeast to southwest, from southern Ocean County 

1.7 mi north of Barnegat Light to eastern Cumberland County 

(pl. 2). The downdip limit of the aquifer is offshore from 

Ocean, Atlantic, and Cape May Counties. The aquifer generally thickens downdip and down coast from a thickness of 40 

ft near Barnegat Light to more than 200 ft at Cape May City 

(McAuley and others, 2001).

Water Withdrawals and Extent of Freshwater

The Atlantic City 800-foot sand is the principal confined 

aquifer supplying water to New Jersey’s barrier island communities from Harvey Cedars in southern Ocean County to Cape 

May City and as far inland as Mays Landing and Egg Harbor 

City in Atlantic County. Withdrawals from the aquifer ranged 

from 18 to 24 Mgal/d during 1978 to 2003 (fig. 9). Withdrawals have gradually increased since 1978; however, changes in 

volume typically were less than 5 percent from year to year. 

Estimated withdrawals in 2003 totaled nearly 24 Mgal/d; 

withdrawal amounts were greatest in Atlantic County and 

least in Ocean County, where the aquifer thins and becomes 

less transmissive. From 1978 to 2003, withdrawals in Atlantic 

County ranged from 7.8 to 11.3 Mgal/d, gradually increasing 

through 2001 before decreasing slightly. In 2003, withdrawals in Atlantic County totaled approximately 10.1 Mgal/d, 

with nearly 60 percent of the withdrawals distributed along 

the barrier islands. Three major production centers are within 

Atlantic County: Absecon Island, Brigantine, and Pleasantville 

(fig. 10). The Absecon Island center includes Atlantic City, 

Margate, Ventnor, and Longport; in 2003 total combined withdrawals here of 4 Mgal/d were the greatest of the three centers. 

Withdrawal trends for the Absecon Island production center 

were generally stable; from 1980 to 2003 estimated withdrawals fluctuated between 4 and 5 Mgal/d. Periods of increased 

withdrawal were typically followed by periods of reduced 

withdrawals. The Pleasantville production center includes both 

the Atlantic City MUA and New Jersey American Water Company-Atlantic production wells as well as production wells in 

eastern Hamilton Township; combined withdrawals in 2003 

were 3.4 Mgal/d. From 1980 to 2003, withdrawals from this 

area of the aquifer increased from 2 to nearly 3.5 Mgal/d. At 

Brigantine, an average of 1.9 Mgal/d was withdrawn from the 

aquifer in 2003. Withdrawals increased from 1.5 to 2 Mgal/d 
14 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

1 - 99

100 - 199

200 - 299

300 - 399

Greater than 400

Aquifer outcrop

Updip limit of 

aquifer

EXPLANATION

Water withdrawal, in 

million gallons per year

A

T L A

N

T I C

O C E A

N

D E L A W A R E 

B A Y

Absecon Island

ATLANTIC

BURLINGTON

CAPE MAY

CAMDEN

CUMBERLAND

GLOUCESTER

SALEM

OCEAN

Buena

Avalon

Berlin

Cape May

Wildwood

Vineland

Millville

Tuckerton

Hammonton

Glassboro

Rio 

Grande

Ocean City

Brigantine

Manahawkin

Beach Haven

Ship Bottom

Stone Harbor

Margate City

Ventnor City

Mays Landing

Forked River

Atlantic City

Pleasantville

Medford Lakes

Barnegat 

Light

Egg Harbor City

Cape May 

Court House

Villas

Longport

Harvey 

Cedars

75° 74°30'

39°

30'

39°

0 2 4 6 8 10 MILES

0 2 4 6 8 10 KILOMETERS

Base from U.S. Geological Survey digital data, 1:24,000 

Universal Transverse Mercator Projection, Zone 18, NAD 83

Figure 6. Location and amount of ground water withdrawn from the Rio Grande water-bearing zone, New Jersey Coastal Plain, 2003.
Atlantic City 800-Foot Sand 15

during 1980–86; thereafter, combined withdrawals from the 

wells were approximately 2 Mgal/d.

In Cape May County, most ground-water withdrawals 

are distributed along the barrier islands; however, substantial 

withdrawals also occur near Cape May Court House and west 

of Cape May City at the southern end of the peninsula (fig. 

10). Withdrawals from the aquifer decreased during 1986–92 

to less than 6 Mgal/d; however, during 1992–2003 withdrawals increased by nearly 39 percent. In early 1998, a desalination plant in lower Cape May County began operation in order 

to augment the existing water supply, and by 2003, associated withdrawals were approximately 1 Mgal/d. Withdrawals 

within the county in 2003 totaled nearly 8 Mgal/d; this represents the highest total since 1978. 

The Atlantic City 800-foot sand contains freshwater 

throughout southern Ocean, Atlantic, and northern Cape May 

Counties, where dissolved chloride concentrations typically 

range from 2 to 20 mg/L. South of Avalon, ground water 

within the aquifer becomes progressively more chloride-rich, 

and near the southern tip of the Cape May Peninsula, chloride 

concentrations range from 400 to more than 1,500 mg/L. The 

mapped position of the 250-mg/L isochlor has not changed 

from that previously described by Lacombe and Rosman 

(2001); the position of the freshwater-saltwater interface 

(hereafter referred to as saltwater front) lies approximately 

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

YEAR

0

1

2

WATER WITHDRAWALS,

IN MILLION GALLONS PER DAY

Figure 7. Estimated ground-water withdrawals from the Rio Grande water-bearing zone, New Jersey Coastal Plain, 1978–2003.

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

YEAR

WATER-LEVEL ALTITUDE, IN FEET REFERENCED TO NGVD 29

09-304

09-71

-20

10

-10

-80

-40

-20

-30

-40

0

0

-60

Missing

data

Missing

data

Missing

data

Figure 8. Water-level hydrographs for observation wells screened in the Rio Grande water-bearing zone, New Jersey Coastal Plain, 

1978–2003.
16 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

4 mi to the south-southeast of production wells at Stone Harbor. Chloride concentrations in the production well (09-135) 

nearest the front have remained largely consistent over time. 

From the mid-1960s through 2000, concentrations ranged 

from 30 to 40 mg/L, only occasionally exceeded these values, 

and subsequently returned to antecedent levels. Recently 

reported (2004–06) chloride concentrations in samples collected from a replacement well (09-521) nearer the front 

were as high as 87 mg/L and as low as 26 mg/L. Farther to 

the north and offshore of Atlantic County, the saltwater front 

is approximately 9.6 and 8 mi to the southeast of production wells in Ventnor and Brigantine, respectively. Dissolved 

chloride in samples from production wells at Brigantine 

remained at levels consistently below 10 mg/L for the period 

of record through 2003. Similarly, data from production wells 

at Ventnor showed little or no sustained increase in dissolved 

chloride concentrations through 2003; from 1993 to 2003, 

reported values typically were less than 10 mg/L. Farther to 

the south, the saltwater front traverses the lower part of the 

Cape May peninsula, trending approximately east-west from 

Wildwood to the south of Villas. Chloride concentrations 

in samples from wells south of this line in lower Cape May 

County, although elevated, also have remained stable. The 

location of the 10,000-mg/L isochlor was simulated by use of 

the USGS SHARP computer model of the aquifers of the New 

Jersey Coastal Plain (Pope and Gordon, 1999). This interface 

is located approximately 36 mi offshore and to the southeast of 

Atlantic City.

Water Levels

Water-level data from 74 wells screened in the Atlantic 

City 800-foot sand are presented in appendix 2 and were used 

to map the 2003 potentiometric surface (pl. 2). The dominant 

feature in the potentiometric surface is an elongated cone 

of depression that extends beneath the coastal barrier island 

communities from Barnegat Light in Ocean County south 

to Cape May City. The deepest part of the cone is centered 

beneath the eastern Atlantic County municipalities of Atlantic 

City, Margate, and Ventnor. Water levels as low as 94 ft below 

NGVD 29 were observed in well 01-1256 in the center of the 

cone. At the northern end of the cone of depression, south of 

Barnegat Light, water levels ranged from -26 ft (well 29-112) 

near the northern limit of the confined aquifer to -33 ft (well 

29-9) near the southern end of Long Beach Island. Areas of 

even lower hydraulic head were observed near production 

wells on the island’s central section. Previously published 

potentiometric surface maps depicted localized cones along 

Long Beach Island at Harvey Cedars and Ship Bottom (Eckel 

and Walker, 1986; McAuley and others, 2001); in 2003 a 

localized cone with water levels lower than -40 ft was present around production wells to the north and east of Beach 

Haven. Withdrawals at these and nearby wells did not increase 

appreciably from 1998 volumes, and the low water level may 

be an artifact of recent withdrawals at an adjacent well. Water 

levels rose slightly at both the north and south ends of this 

island; near the midsection of the island, the potentiometric 

surface was slightly lower than that observed in 1998. To the 

southwest from the center of the regional cone, water levels 

were progressively higher toward the southern end of the Cape 

May peninsula, where water levels ranged from -22 ft to less 

than -40 ft NGVD 29. The maximum water-level altitudes 

occurred near the updip limit of the aquifer in southern Ocean 

and central Atlantic County, where water levels were typically 

greater than 20 ft NGVD 29.

Water-level changes from 1998 to 2003 were calculated 

for 57 wells screened in the Atlantic City 800-foot sand. During this period, water levels had stabilized or had risen in most 

of the wells (82 percent) throughout the aquifer; however, 

changes in the potentiometric surface (declines) were greatest 

in southern Cape May County (fig. 11). Water levels at and 

in the vicinity of the Cape May City desalination wells were 

as much as 32 ft lower in 2003 than in 1998. Withdrawals at 

the desalination wells (09-480 and 09-507) began in 1998; by 

2003 total withdrawals from these wells were approximately 

1.1 Mgal/d. Water levels have recovered near the center of the 

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

Total

withdrawals

0

10

15

20

25

30

WATER WITHDRAWALS,

IN MILLION GALLONS PER DAY

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

YEAR

5

Atlantic County

Cape May County

Ocean County

Figure 9. Estimated ground-water withdrawals from the Atlantic City 800-foot sand, New Jersey Coastal Plain, 1978–2003.
Atlantic City 800-Foot Sand 17

1 - 99

100 - 199

200 - 299

300 - 399

Greater than 400

Aquifer outcrop

Updip limit of 

aquifer

EXPLANATION

Water withdrawal, in 

million gallons per year

A

T L A

N

T I C

O C E A

N

D E L A W A R E 

B A Y

Absecon Island

ATLANTIC

BURLINGTON

CAPE MAY

CAMDEN

CUMBERLAND

GLOUCESTER

SALEM

OCEAN

Buena

Avalon

Berlin

Cape May

Wildwood

Vineland

Millville

Tuckerton

Hammonton

Glassboro

Rio 

Grande

Ocean City

Brigantine

Manahawkin

Beach Haven

Ship Bottom

Stone Harbor

Margate City

Ventnor City

Mays Landing

Forked River

Atlantic City

Pleasantville

Medford Lakes

Barnegat 

Light

Egg Harbor City

Cape May 

Court House

Villas

Longport

Harvey 

Cedars

Desalination 

wells

75° 74°30'

39°

30'

39°

0 2 4 6 8 10 MILES

0 2 4 6 8 10 KILOMETERS

Base from U.S. Geological Survey digital data, 1:24,000 

Universal Transverse Mercator Projection, Zone 18, NAD 83

Figure 10. Location and amount of ground water withdrawn from the Atlantic City 800-foot sand, New Jersey Coastal Plain, 2003.
18 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

cone of depression underlying Ventnor and Atlantic City. In 

1998, water levels near the center of this cone were in excess 

of 100 ft below NGVD 29. By 2003, all water levels were 

higher than -100 ft, and the area encompassed by the closed 

80-ft contour had contracted from approximately 60 mi2 to 

30 mi2 or by about 50 percent. The seaward edge of the -80-ft 

contour has shifted from its position in 1998 of approximately 

4 mi offshore of Ventnor; in 2003, it was approximately 2 mi 

offshore, similar to its position in 1993. Combined withdrawals from 25 production wells in this area had decreased from 

1998 volumes by nearly 16 percent. 

A downward hydraulic gradient from the Rio Grande 

water-bearing zone to the Atlantic City 800-foot sand and an 

upward hydraulic gradient from the Piney Point aquifer to the 

Atlantic City 800-foot sand is shown in section B-B' (fig. 2b). 

An upward vertical gradient from the Atlantic City 800-foot 

sand to the Rio Grande water-bearing zone exists in the area 

of the Rio Grande well field (section C-C', fig. 2c); however, 

to the southeast, the gradient again reverses and is downward 

from the Rio Grande to the underlying Atlantic City 800-foot 

sand. 

Water-level hydrographs for seven observation wells 

screened in the Atlantic City 800-foot sand show long-term 

trends and seasonal fluctuations (fig. 12). Observation wells 

01-37 and 01-702 are located on Absecon Island in Atlantic 

City and Margate at the center of the cone of depression. Seasonal water-level fluctuations due to interference from nearby 

production wells were substantial in both wells, occasionally varying by more than 30 ft in a given year, and reflect 

increased withdrawals during the summer tourist season. 

Water levels generally were stable during 1988–94; however, water levels declined in both wells from 1994 to 1998. 

This decline was probably a result of increased withdrawals 

during that period; however, estimated withdrawals indicate 

an overall stable trend during 1994–98. During 1998–2003, 

water levels again recovered as estimated withdrawals from 

Absecon Island decreased by nearly 1 Mgal/d. From 1978 to 

2003, the net deficit in water levels on Absecon Island was 

approximately 20 ft. Observation wells 01-180 and 01-578 are 

located on the mainland and updip from withdrawal centers 

on the barrier islands. The hydrographs indicate water-level 

trends similar to those observed for wells 01-37 and 01-702; 

however, long-term decline and seasonal fluctuations were 

mitigated with distance away from the center of the cone.

The water-level hydrographs for wells in Cape May 

County (09-302, 09-306 and 09-337) indicate seasonal waterlevel fluctuations ranging from 2 ft to 9 ft during 1989–2003. 

A continuous 5 ft to 6 ft water-level decline in the hydrograph 

record starting in early 1999 likely can be attributed to the 

Cape May City Water Department desalination wells (09-480 

and 09-507), which began withdrawals during this time. The 

net decline in water levels during 1989–2003 in these wells 

ranged from 5 ft to 14 ft, with the largest declines occurring 

near the southernmost part of the peninsula.

Piney Point Aquifer

The Piney Point aquifer, as described by Zapecza (1989), 

is composed of fine- to coarse-grained glauconitic sands 

OCEAN

ATLANTIC

BURLINGTON

SALEM

MONMOUTH

CUMBERLAND

HUNTERDON

CAPE MAY

MERCER

UNION

MIDDLESEX

GLOUCESTER CAMDEN

SOMERSET

MORRIS HUDSON

OCEAN

ATLANTIC

BURLINGTON

SALEM

MONMOUTH

CUMBERLAND

HUNTERDON

CAPE MAY

MERCER

UNION

MIDDLESEX

GLOUCESTER CAMDEN

SOMERSET

MORRIS HUDSON

75°30' 75° 74°30' 74°

40°

30'

40°

39°

30'

39° 0 10 20 MILES

0 10 20 KILOMETERS

PENNSYLVANIA

DELAWARE

BAY

A T L A N T I C O C E A N

DELAWARE

FALL LINE

75°30' 75° 74°30' 74°

40°

30'

40°

39°

30'

39° 0 10 20 MILES

0 10 20 KILOMETERS

PENNSYLVANIA

DELAWARE

BAY

A T L A N T I C O C E A N

DELAWARE

FALL LINE

EXPLANATION

AQUIFER OUTCROP 

DECLINE, IN FEET

5 - 10

10 - 20

20 - 40

NO SUBSTANTIAL CHANGE

5 - 10 

10 - 20 

20 - 40

RECOVERY, IN FEET

-5 - +5

(a) (b)

UPDIP LIMIT OF THE AQUIFER

Base from U.S. Geological Survey digital data, 1:24,000, Universal Transverse Mercator Projection, Zone 18

Desalination wells

Figure 11. Water-level changes in the (a) Atlantic City 800-foot sand and (b) Piney Point aquifer, New Jersey Coastal Plain, 1998–2003.
Piney Point Aquifer 19

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

Missing

record

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

YEAR

WATER-LEVEL ALTITUDE, IN FEET REFERENCED TO NGVD 29

01-578

01-37

01-702

-60

-40

-50

-120

-100

-80

-60

-20

-30

-70

-80

-60

-80

-40

-100

-120

01-180

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

-30

-40

-20

-50

-60

Figure 12. Water-level hydrographs for observation wells screened in the Atlantic City 800-foot sand, New Jersey Coastal Plain, 

1978–2003.
20 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

interspersed with shell material. The Piney Point is a confined 

aquifer that does not crop out within the study area, and therefore, cannot be recharged directly by precipitation; recharge 

occurs by leakage from other aquifers through the bounding 

confining layers. The updip limit of the aquifer is in central 

Ocean, Burlington, Camden, Gloucester and Salem Counties 

and approximately near the downdip limit of the Vincentown 

aquifer. Near this updip limit the aquifer is generally less 

than 40 ft thick. The downdip limit of the aquifer is offshore 

of Ocean, Atlantic, and Cape May Counties. There are two 

areas within the aquifer extent in New Jersey of substantial 

sand accumulation (Zapecza, 1989)—southern Burlington 

and Ocean Counties where thicknesses can exceed 130 ft 

and to the southwest in southern Cumberland County where 

maximum thicknesses are greater than 200 ft. In Delaware, 

the updip limit of the Piney Point aquifer is in central Kent 

County, and the downdip limit in Delaware extends into 

southeastern Sussex County (Vroblesky and Fleck, 1991). The 

aquifer is confined throughout its entire extent in Delaware. 

The maximum thickness of the aquifer in Delaware, approximately 250 ft, occurs near Dover.

Water Withdrawals and Extent of Freshwater

Ground-water withdrawals from the Piney Point aquifer 

were made predominantly in coastal regions of Ocean County, 

New Jersey, particularly in the central Barnegat Bay area and 

in Dover, Delaware (fig. 13). Withdrawals also were made in 

Buena Borough in western Atlantic County as well as at scattered smaller capacity centers in updip parts of the aquifer in 

Burlington and Camden Counties where yields are favorable 

to development. Water-quality issues in the overlying Kirkwood-Cohansey aquifer have encouraged recent development 

of the Piney Point aquifer in and around the city of Bridgeton, 

in southern Cumberland County.

Withdrawals from the aquifer ranged from 1.8 to 

4.8 Mgal/d during 1978 to 2003 (fig. 14). Estimated withdrawals for 2003 from the New Jersey portion of the aquifer 

totaled 4.8 Mgal/d. Withdrawals statewide were relatively 

constant from 1978 to 1992 at nearly 2 Mgal/d prior to a 

50-percent increase in 1993. From 1993 to 2003, withdrawals 

steadily increased largely due to increased development of the 

aquifer in Ocean County where, in 2003, withdrawals were 

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

Missing

record

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

09-302

-20

-10

-30

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

WATER-LEVEL ALTITUDE, IN FEET REFERENCED TO NGVD 29

09-306

-10

-20

-30

YEAR

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

-20

-30

-10

-40

09-337

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

Figure 12. Water-level hydrographs for observation wells screened in the Atlantic City 800-foot sand, New Jersey Coastal Plain, 

1978–2003.—Continued
Piney Point Aquifer 21

estimated to be 4.3 Mgal/d or 90 percent of all withdrawals 

within the State. Withdrawals increased in Buena from 0.1 to 

0.5 Mgal/d during 1978–86 but have since remained stable at 

less than 0.5 Mgal/d. In Delaware, most withdrawals from the 

Piney Point aquifer occurred in and around the city of Dover. 

Water withdrawals in Delaware increased from 3 Mgal/d in 

1978 to approximately 4 Mgal/d by 1994; withdrawals subsequently decreased to 3 Mgal/d in 2001 (fig. 15).

For this study, the location of the 250-mg/L isochlor in 

New Jersey was modified from Schaefer (1983) and Lacombe 

and Rosman (2001), and in Delaware, from Woodruff (1969). 

The location of this line lies more than 15 mi downdip from 

the production center at Buena; Lacombe and Rosman (2001) 

estimate the position of this line to the north at 12 mi downdip 

from production wells at Barnegat Light. Chloride concentrations in production wells at Barnegat Light range from 5 to 

15 mg/L but are typically 10 mg/L or less; sustained increases 

have not occurred during the last decade. Similarly, chloride 

concentrations in ground water from observation wells near 

the saltwater front have not increased substantially, and the 

extent of freshwater remains similar to that in 1998. In Delaware, the position of the front is approximately 10 mi downdip 

from the major production center at Dover. The location of 

the 10,000-mg/L isochlor was simulated by Pope and Gordon 

(1999) using a saltwater model simulation of the aquifers 

underlying the New Jersey Coastal Plain. 

Water Levels

The potentiometric surface of the Piney Point aquifer in 

late fall 2003 in New Jersey and Delaware is shown in plate 

3; water-level data that were used to define this surface are 

listed in appendix 3. Maximum water-level altitudes within the 

Piney Point aquifer were observed near the updip boundary 

straddling the border between Burlington and Ocean Counties, 

and the lowest water- level altitudes were observed in Kent 

County, Delaware, and along the barrier islands of eastern 

Ocean County, New Jersey. Five regional cones of depression 

are present in the Piney Point aquifer. The northernmost cone 

underlies Seaside Park in Ocean County near the area where 

the aquifer is most heavily developed in New Jersey; the minimum water level at the center of this cone of depression was 

-48 ft. Water levels were substantially higher than in 1998; 

maximum increases observed at wells 29-808 and 29-537 of 

46 and 41 feet, respectively (app. 3), reflect an overall reduction in withdrawals from production wells in Seaside Heights 

and Seaside Park. Lacombe and Rosman (2001) observed 

considerable decline in the water levels in this area during 

1993–98; in 1998, the depth and breadth of this cone were at 

their maximum. By 2003, the configuration and magnitude of 

this cone was similar to that observed in 1983.

To the south, the cone of depression centered near Barnegat Light had a minimum water level of -40 ft (well 29-607). 

Slightly higher water levels subsequent to 1998 indicate a 

minor contraction of the cone’s overall extent. 

A cone of depression also is present in coastal Atlantic 

County, where the overlying Atlantic City 800-foot sand has 

experienced a sustained decline in water levels. The Piney 

Point aquifer is unused in this area, and the cone of depression 

may be in part a response to the decline in water levels in the 

overlying aquifer (Lacombe and Rosman, 2001). The 2003 

water level at the center of this cone (well 01-834) was -34 ft 

NGVD 29, 2 ft lower than that observed during the previous 

study. Water levels in the overlying Atlantic City 800-foot 

sand in this area, however, were stable to recovering during 

the same period.

In western Atlantic County, a cone of depression characterized by water levels reaching below -20 ft is centered under 

the Borough of Buena and encompasses an area of approximately 90 mi2 from Hamilton Township to the east to Vineland 

in the west. The cone’s position and magnitude are similar to 

that in observed in 1998; however, its center has shifted nearly 

1 mi to the west probably as a result of a short-term shift in 

withdrawal patterns within the borough. Rising water levels 

were observed in wells in northeastern Buena, and withdrawals from the aquifer to the south and west that began in 2003 

contributed to declining water levels here. Water levels near 

the edge of the cone (the 0-ft contour) remained about the 

same.

In Delaware, a cone of depression with water levels as 

low as -160 ft NGVD 29 (well Jd34-18) persists in and around 

the city of Dover. The cone of depression is the deepest and 

most regionally extensive within the Piney Point aquifer. 

Substantial long-term withdrawals in this area have caused 

regional stresses within the aquifer to propagate over a large 

area and extend beneath the Delaware Bay into southern New 

Jersey that, until recently (2004), have been the primary cause 

of declining water levels in Cumberland County. Water levels 

at the center of this cone have recovered since 1998 (fig. 

11); near the edge of the cone, water levels have stabilized 

or declined slightly during this period. Rises in water levels 

of 9 ft to more than 30 ft decreased the depth at the center of 

the cone and considerably reduced the area within the -120-ft 

potentiometric-surface contour. Away from the center of the 

cone of depression, water-level change was more moderate to 

stable, and the area encompassed by the closed -40-ft potentiometric-surface contour was similar in size (approximately 600 

mi2) to that in 1998.

Section B-B' (fig. 2b) shows a downward hydraulic gradient from the overlying Kirkwood-Cohansey aquifer system 

to the Piney Point aquifer and a downward gradient from the 

Piney Point to the underlying Wenonah-Mount Laurel aquifer 

in the updip portion of the Piney Point aquifer. In the downdip 

direction and toward coastal Atlantic County, an upward gradient from the Piney Point aquifer into the Atlantic City 800-foot 

sand is prevalent.

Hydrographs of wells showing long-term water-level 

trends in the Piney Point aquifer are shown in figures 16 

and 17. Observation wells 29-425 and 05-676 are located 

near the potentiometric high in western Ocean and eastern 

Burlington Counties and distant from production centers to 
22 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

1 - 99

100 - 199

200 - 299

300 - 399

Greater than 400

Updip limit of

the aquifer

EXPLANATION

Water withdrawal, in 

million gallons per year

75°30' 75° 74°30' 74°

40°

30'

40°

39°

30'

39°

Base from U.S. Geological Survey digital data, 1:24,000 

Universal Transverse Mercator Projection, Zone 18, NAD 83

0 5 10 20 MILES

0 5 10 20 KILOMETERS

OCEAN

ATLANTIC

BURLINGTON

SALEM

MONMOUTH

CUMBERLAND

HUNTERDON

MIDDLESEX

CAPE MAY

MERCER

SOMERSET

GLOUCESTER

CAMDEN

UNION

MORRIS HUDSON

Dover

Buena

Camden

Avalon

Berlin

Trenton

Matawan

Marlton

Lakewood

Freehold

Red Bank

Cape May

Wildwood

Vineland

New Egypt

Eatontown

Princeton Jamesburg

Keansburg

Millville

Bridgeton

Tuckerton

Hammonton

Glassboro

Lavallette Toms River

Hightstown

Sea Bright

Sayreville

Rio Grande

Ocean City

Brigantine

Manahawkin

Wilmington

Spring Lake

Asbury Park

Long Branch

Beach Haven

Ship Bottom

Browns Mills

Stone Harbor

Margate City

Ventnor City

Mays 

Landing

Forked River

Seaside Park

New Brunswick

Atlantic City

Pleasantville

Medford Lakes

Point Pleasant

East Brunswick

Barnegat Light

Egg Harbor City

Atlantic Highlands

Spring Lake 

Heights

Point Pleasant Beach

Cape May 

Court House

PENNSYLVANIA

DELAWARE

PHILADELPHIA

NEW YORK

NEW 

CASTLE

KENT

A T L A

N T I C

O C E A

N

D E L A W A R E 

B A Y

MARYLAND

KENT

CECIL

QUEEN

ANNES

Fall Line

CAROLINE

R A R I T A N

B A Y

Delaware

River

NEW JERSEY

Figure 13. Location and amount of ground water withdrawn from the Piney Point aquifer, New Jersey, Delaware, and Maryland 

Coastal Plain, 2003.
Piney Point Aquifer 23

the east (fig. 16). The hydrographs of both wells indicate 

stable water levels (approximately 120 ft NGVD 29) for the 

period of record. Similarly, the hydrograph of observation well 

05-407, which is located in the updip portion of the aquifer 

in central Burlington County, shows little variation in water 

levels from 1978 to 2003. 

Water levels in observation well 29-585, located west 

from the cones of depression at Seaside Park and Barnegat 

Light, were fairly constant prior to 1989 but declined about 

8 ft during 1989–96 because of increased withdrawals from 

nearby production well(s). In early 1997, withdrawals were 

reduced in the nearby wells, and water levels quickly recovered to mid-1984 levels. The net change in water levels in well 

29-585 during 1983-2003 was a decline of 1 ft. Observation 

well 29-18 is located near the midway point between the two 

cones of depression underlying the barrier islands of Ocean 

County. The net change from 1978 to 2003 was a decline of 

4 ft. The nearly stable water levels for the duration of the 

record reflect the localized nature of the two cones.

Water levels have declined 2 ft to 7 ft in observation 

wells 11-44 and 11-163, respectively, in Cumberland County 

during 1998–2003 after declining at a constant rate of approximately 1 ft per year from 1978–97 (fig. 16). The water level in 

observation well 11-96, located near the shoreline in southern 

Cumberland County, also had declined at a rate of about 1 ft 

per year during 1978–93; from 1993 to 2003 the water level 

in this well remained unchanged at -34 ft. The water level in 

well Id55-01, located near the center of the cone of depression 

in Dover, Delaware, declined during 1978–91 but generally 

rose through 2003 (fig. 17). Despite seasonal fluctuations 

in water levels of as much as 22 ft, annual high water levels 

have increased by approximately 14 ft during 1991 to 2003. 

The rise in water levels in well Id55-01 and the stabilization 

of water levels in well 11-96 through 2003 are in response 

to a decrease in ground-water withdrawals since the early 

1990s in the Dover, Delaware, area (Lacombe and Rosman, 

2001). Observation wells Kc31-01 and Nc13-03 are located 

to the west and southwest of the regional production center, 

respectively. Water levels in both wells declined slowly during 

1978–93; thereafter, water levels generally were stable. The 

net decline from 1978 to 2003 at both wells was approximately 12 ft. Near the western limit of the study area, water 

levels in observation wells in eastern Caroline County, Maryland, exhibit a similar trend. The hydrographs for wells CO Bd 

53 and CO Dd 47 show gradually declining water levels from 

1983 through 2003; the total decline for this 20-year period 

was approximately 13 ft at both wells. Seasonal fluctuations 

in water levels in well CO Dd 47 typically were 4 ft to 5 ft in 

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

0

2

4

6

5

WATER WITHDRAWALS, IN

MILLION GALLONS PER DAY

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 

YEAR

Ocean County

Atlantic County

3

1

Figure 14. Estimated ground-water withdrawals from the Piney Point aquifer, New Jersey Coastal Plain, 1978–2003.

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

0

2

4

6

5

WATER WITHDRAWALS, IN

MILLION GALLONS PER DAY

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 

YEAR

3

1

Figure 15. Estimated ground-water withdrawals from the Piney Point aquifer, Delaware Coastal Plain, 1978–2001.
24 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

response to withdrawals at a nearby production well in Denton, Maryland.

Vincentown Aquifer

The Vincentown aquifer is composed of the sandy portions of the Paleocene Vincentown Formation. Within the 

outcrop and from 8 mi to 10 mi downdip, the Vincentown 

Formation can yield quantities of ground water capable of 

sustaining small production and domestic-supply wells; 

beyond this extent, it functions primarily as a confining unit 

(Zapecza, 1989). In the outcrop and the shallow subsurface, 

the formation is composed primarily of a massive quartzose 

sand containing abundant glauconite, mica, and shell material. 

The formation grades to silty sand then to silt downdip from 

the outcrop (Sugarman, 1992). The aquifer is well defined in 

northern Ocean and southern Monmouth Counties but is less 

well defined in the rest of the Coastal Plain. The formation 

is thickest (more than 100 ft thick) in Monmouth County in 

east-central New Jersey, the area where it is used most often 

for water supply. Beyond Monmouth and Ocean Counties, 

the Vincentown Formation is silty and produces appreciable 

quantities of water only locally; the Vincentown aquifer is not 

a large source of water in any part of southwestern or southcentral New Jersey. In Delaware and eastern Maryland, the 

local equivalent is referred to as the Aquia-Rancocas aquifer 

(Vroblesky and Fleck, 1991), and the aquifer consists of the 

permeable sands of the Paleocene Rancocas Group. The updip 

limit of the confined aquifer is bounded by the outcrop of the 

Vincentown Formation, and its downdip limit extends into 

central Kent County. 

Water Withdrawals and Extent of Freshwater

The distribution of ground-water withdrawals from the 

Vincentown aquifer is shown in figure 18. Withdrawals for 

public supply are most prevalent in Monmouth County and 

parts of northern Ocean County; the aquifer in this area also 

is an important source for self supply. Withdrawals for self 

supply and irrigation also are made in the sandy portions of 

the aquifer in Salem and Burlington Counties and, to a lesser 

extent, in Gloucester and Camden Counties. Ground-water 

withdrawals from the Vincentown aquifer ranged from 0.75 

to 1.5 Mgal/d from 1978 to 2003 (fig. 19). During 2003, an 

estimated 1.2 Mgal/d of ground water was withdrawn from 

the aquifer. Production wells at two well fields located along 

the border between northern Ocean and southern Monmouth 

Counties accounted for nearly 60 percent (0.7 Mgal/d) of total 

withdrawals from the aquifer. Notable withdrawals also were 

made at a nearby golf course in Farmingdale and along the 

aquifer’s outcrop and subcrop in Burlington County. 

The 250-mg/L isochlor was not determined for the 

Vincentown aquifer; ground-water samples from the confined 

part of the aquifer contain chloride concentrations of 45 mg/L 

or less. The location of the 10,000-mg/L isochlor was not 

estimated for this aquifer. 

Water Levels

Water-level data from 26 wells screened in the Vincentown aquifer were used to define the 2003 potentiometric 

surface (pl. 4, app. 4). Where data were sparse, particularly 

in central Salem County, simulated water levels from Martin 

(1998) were used to estimate the position and shape of the 

contours. The configuration of the potentiometric surface for 

the Vincentown aquifer is nearly identical to that interpreted 

for 1998, as there was little observed change in water levels 

from 1998 to 2003. The highest water levels (> 150 ft) within 

the aquifer area occurred near the updip limit in western Monmouth and northwestern Ocean County; the lowest observed 

water levels of 3 ft occurred in lower Salem County. Slightly 

to moderately higher water levels in several wells located 

within the Adelphia and Farmingdale quadrangles near the 

western limit of the aquifer caused the potentiometric contours to shift slightly in the downdip direction in this area. The 

potentiometric high of 160 ft in this area reflects the prevailing 

water levels in the outcrop near here (Watt and others, 1994). 

Data from several observation wells added to the study in 

central Gloucester County indicate a local potentiometric high 

similar to that depicted by Martin (1998). Decreasing water 

levels to the southwest from here indicate regional flow is 

toward the Delaware River.

The largest change observed within the aquifer occurred 

at the Aldrich well field, located along the border between 

Ocean and Monmouth Counties, where the water level in well 

25-451 rose by approximately 18 ft. Withdrawals from this 

well were at their peak in 1998, but by 2003 withdrawals had 

decreased by nearly 120 Mgal. To the northwest and near the 

regional potentiometric high, the water level in well 29-660 

rose 10 ft relative to 1998 levels. Water levels elsewhere 

within the aquifer generally were stable to rising since 1998.

A downward hydraulic gradient from the water-table 

aquifer to the Vincentown aquifer and a downward gradient 

from the Vincentown aquifer to the Wenonah-Mount Laurel 

aquifer are shown in section A-A' (fig. 2a). The downward 

gradient to the Wenonah-Mount Laurel aquifer is strongest 

near the downdip limit of aquifer as water-level altitudes in the 

underlying aquifer increasingly become depressed.

Long-term water-level data for the Vincentown aquifer 

are represented in figure 20. The hydrographs of observation 

wells 29-139 and 5-1250 show near constant water levels 

for the period of record. The hydrograph of observation well 

25-636 shows a rise of 16 ft during 1988–91; thereafter, water 

levels remained constant. Seasonal variations in water levels 

were greatest (4 ft) in this well owing to its location near the 

area where the aquifer is most utilized. Long-term water-level 

data were not available for the southern extent of the aquifer.
Vincentown Aquifer 25

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

YEAR

WATER-LEVEL ALTITUDE, IN FEET REFERENCED TO NGVD 29

29-425

05-407

29-585

120

110

130

-10

10

10

20

130

120

110

55

50

0

45

11-44

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

0

20

-10

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

29-18

05-676

Figure 16. Water-level hydrographs for observation wells screened in the Piney Point aquifer, New Jersey Coastal Plain, 1978–2003. 
26 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

Wenonah-Mount Laurel Aquifer

The Wenonah-Mount Laurel aquifer is composed of the 

sand of the Mount Laurel Formation and, locally, the upper 

part of the Wenonah Formation where the latter is not composed predominantly of silt. The Mount Laurel Formation is 

a slightly glauconitic, micaceous quartz sand; shell beds are 

fairly common throughout. The upper part of the Wenonah 

Formation consists of slightly glauconitic clayey fine sand 

or silt containing abundant lignite fragments and occasional 

pyrite (Owens and others, 1970); the formation grades to a 

silt at its base. The aquifer crops out within the exposures of 

the Mount Laurel and Wenonah Formations in Monmouth and 

Middlesex Counties in the northeastern portion of the Coastal 

Plain to Salem County in the southwest (pl. 5). The downdip limit of the aquifer is offshore of Monmouth and Ocean 

Counties; in the southern New Jersey Counties of Atlantic, 

Cumberland, and Cape May this limit is poorly defined. The 

productivity at any location is based on the thickness and silt 

content of the materials composing the aquifer. The aquifer is 

thickest in southwestern New Jersey (western Salem, and central Gloucester and Camden Counties) where it is used most 

often for water supply. In this area thicknesses of 100 ft to 

200 ft are common (Zapecza, 1989). To the southwest in 

Salem County, the silt content increases, and the productive sands decrease accordingly. In the northeastern part of 

the Coastal Plain, the aquifer also is used for water supply 

in central and eastern Monmouth and northern Ocean Counties; the aquifer here is generally 60 ft to 80 ft thick (Zapecza, 

1989) although thicknesses may exceed 100 ft in some areas 

of Monmouth County. Vroblesky and Fleck (1991) refer to 

the equivalent unit in Delaware and eastern Maryland, as the 

Severn aquifer; the aquifer corresponds to the sandy portions 

of the Severn Formation in eastern Maryland and the Monmouth Formation in Delaware. State agencies in Delaware 

currently refer to this unit as the Mount Laurel aquifer. The 

updip limit of the Mount Laurel aquifer in Delaware is located 

in central New Castle County south of the Chesapeake and 

Delaware Canal, and the downdip limit extends to the southeast of Sussex County. The aquifer here is typically less than 

100 ft thick.

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

-20

0

-40

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

WATER-LEVEL ALTITUDE, IN FEET REFERENCED TO NGVD 29

-20

-30

-40

YEAR

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

20

10

30

-20

11-96

01-834

11-163

-10

-30

-10

0

Figure 16. Water-level hydrographs for observation wells screened in the Piney Point aquifer, New Jersey Coastal Plain, 

1978–2003.—Continued 
Wenonah-Mount Laurel Aquifer 27

Water Withdrawals and Extent of Freshwater

The major withdrawal centers for the Wenonah-Mount 

Laurel aquifer are in southern New Jersey in a narrow band 

from central Burlington County to central Salem County from 

the outcrop to less than 10 mi downdip (fig. 21). Another 

pumping center is located in eastern Monmouth County in 

close proximity to the coast. Average daily withdrawals for 

2003 for the entire study area were estimated at 7.9 Mgal/d 

(fig. 22). This value does not include withdrawals in Delaware, which are thought to be insubstantial; at the time of 

compilation of this report, 2003 withdrawal data for Delaware 

were not available. Most withdrawals occurred in the southern 

counties of New Jersey; by 2003 the combined withdrawals 

from Monmouth and Ocean Counties totaled only 0.6 Mgal/d. 

From 1978 to 2003 estimated withdrawals ranged from 4.1 to 

8.7 Mgal/d. Withdrawals in the northern counties decreased 

from about 1.4 Mgal/d in 1978 to 0.6 Mgal/d in 2003, with the 

largest decrease occurring in 1991 as a result of the implementation of CA 1 cutbacks. During the same period, groundwater withdrawals in the southern counties increased from 4.4 

to 7.2 Mgal/d, with peak volumes of greater than 8 Mgal/d 

occurring during 1997–98. From 1996 to 1997, estimated 

withdrawals from the southern counties increased by 34 percent, the largest 1-year increase observed for the aquifer.

In Delaware, the aquifer is used principally in central 

New Castle County from the outcrop to about 4 mi downdip. Withdrawals are primarily for self supply and irrigation 

although the aquifer is used for public supply in the Middleton 

and Odessa areas. The aquifer is used only locally in northern 

Kent County. Reported usage from 1978 to 2001 ranged from 

less than 0.1 to 0.7 Mgal/d (fig. 23); withdrawals during this 

time period were typically less than 100,000 gal/d. Average 

daily withdrawals increased slightly subsequent to 1990 to 

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

-30 

-100 

YEAR

WATER-LEVEL ALTITUDE, IN FEET REFERENCED TO NGVD 29

-90

-70

-80

-40

40

30

10

0

20

-10

-20

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

-120

-130

-110

-140

-150

-50

-60

COBd-53

NC13-03

CODd-47

Kc31-01

Id55-01

Figure 17. Water-level hydrographs for observation wells screened in the Piney Point aquifer, Delaware and eastern Maryland, 

1978–2003.
28 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

1 - 99

100 - 199

200 - 299

300 - 399

Greater than 400

Aquifer outcrop

Downdip limit of 

aquifer

EXPLANATION

Water withdrawal, in 

million gallons per year

75°30' 75° 74°30' 74°

40°

30'

40°

39°

30'

39°

Base from U.S. Geological Survey digital data, 1:24,000 

Universal Transverse Mercator Projection, Zone 18, NAD 83

0 5 10 20 MILES

0 5 10 20 KILOMETERS

OCEAN

ATLANTIC

BURLINGTON

SALEM

MONMOUTH

CUMBERLAND

HUNTERDON

MIDDLESEX

CAPE MAY

MERCER

SOMERSET

GLOUCESTER

CAMDEN

UNION

MORRIS HUDSON

Dover

Buena

Camden

Avalon

Berlin

Trenton

Matawan

Marlton

Lakewood

Freehold

Red Bank

Cape May

Wildwood

Vineland

New Egypt

Eatontown

Princeton Jamesburg

Keansburg

Millville

Bridgeton

Hammonton Tuckerton

Glassboro

Toms River Lavallette

Hightstown

Sea Bright

Sayreville

Rio Grande

Ocean City

Brigantine

Manahawkin

Wilmington

Spring Lake

Asbury Park

Long Branch

Beach Haven

Ship Bottom

Browns Mills

Stone Harbor

Margate City

Ventnor City

Mays 

Landing

Forked River

Seaside Park

New Brunswick

Atlantic City

Pleasantville

Medford Lakes

Point Pleasant

East Brunswick

Barnegat Light

Egg Harbor City

Atlantic Highlands

Spring Lake 

Heights

Point Pleasant Beach

Cape May 

Court House

PENNSYLVANIA

DELAWARE

PHILADELPHIA

NEW YORK

NEW 

CASTLE

KENT

A T L A

N T I C

O C E A

N

D E L A W A R E 

B A Y

MARYLAND

KENT

CECIL

QUEEN

ANNES

R A R I T A N

B A Y

Fall Line

CAROLINE

Delaware

River

NEW JERSEY

Figure 18. Location and amount of ground water withdrawn from the Vincentown aquifer, New Jersey and Delaware Coastal Plain, 

2003.
Wenonah-Mount Laurel Aquifer 29

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

0

2

WATER WITHDRAWALS, IN

MILLION GALLONS PER DAY

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 

YEAR

3

1

Figure 19. Estimated ground-water withdrawals from the Vincentown aquifer, New Jersey Coastal Plain, 1978–2003.

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

YEAR

WATER-LEVEL ALTITUDE, IN FEET REFERENCED TO NGVD 29

29-139

05-1250

80

80

110

120

150

120

100

100

25-636

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

70

100

50

130

140

110

90

90

60

Missing data

Figure 20. Water-level hydrographs for observation wells screened in the Vincentown aquifer, New Jersey Coastal Plain, 1978–2003.
30 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

1 - 99

100 - 199

200 - 299

300 - 399

Greater than 400

Aquifer outcrop

EXPLANATION

Water withdrawal, in 

million gallons per year

75°30' 75° 74°30' 74°

40°

30'

40°

39°

30'

39°

Base from U.S. Geological Survey digital data, 1:24,000 

Universal Transverse Mercator Projection, Zone 18, NAD 83

0 5 10 20 MILES

0 5 10 20 KILOMETERS

OCEAN

ATLANTIC

BURLINGTON

SALEM

MONMOUTH

CUMBERLAND

HUNTERDON

MIDDLESEX

CAPE MAY

MERCER

SOMERSET

GLOUCESTER

CAMDEN

UNION

MORRIS HUDSON

Dover

Buena

Camden

Avalon

Berlin

Trenton

Matawan

Marlton

Lakewood

Freehold

Red Bank

Cape May

Wildwood

Vineland

New Egypt

Eatontown

Princeton Jamesburg

Keansburg

Millville

Bridgeton

Tuckerton Hammonton

Glassboro

Toms River Lavallette

Hightstown

Sea Bright

Sayreville

Rio Grande

Ocean City

Brigantine

Manahawkin

Wilmington

Spring Lake

Asbury Park

Long Branch

Beach Haven

Ship Bottom

Browns Mills

Stone Harbor

Margate City

Ventnor City

Mays 

Landing

Forked River

Seaside Park

New Brunswick

Atlantic City

Pleasantville

Medford Lakes

Point Pleasant

East Brunswick

Barnegat Light

Egg Harbor City

Atlantic Highlands

Spring Lake 

Heights

Point Pleasant Beach

Cape May 

Court House

PENNSYLVANIA

DELAWARE

PHILADELPHIA

NEW YORK

NEW 

CASTLE

KENT

A T L A

N T I C

O C E A

N

D E L A W A R E 

B A Y

MARYLAND

KENT

CECIL

QUEEN

ANNES

R A R I T A N

B A Y

Fall Line

CAROLINE

Delaware

River

NEW JERSEY

Figure 21. Location and amount of ground water withdrawn from the Wenonah-Mount Laurel aquifer, New Jersey and Delaware 

Coastal Plain, 2003.
Wenonah-Mount Laurel Aquifer 31

the maximum of 0.7 Mgal/d in 2000. The reason for this peak 

in withdrawals is unclear; it could be due to discrepancies in 

allocation reporting. 

The mapped location of the 250-mg/L isochlor is in 

southern Cumberland and Salem Counties. The position of this 

line, originally described by Lacombe and Rosman (1997), 

has not been moved landward but has been extended to the 

Delaware River in western Salem County on the basis of 

recent elevated chloride concentrations in ground water in the 

Artificial Island area. The aquifer contains salty water along 

the Delaware estuary and bay front in southern Cumberland 

and Salem Counties to more than 2 mi inland in the southwestern part of Salem County. Elevated chloride concentrations 

(> 50 mg/L) also are present in the ground water near the city 

of Salem, but elsewhere in southern New Jersey where the 

aquifer is utilized, the ground water is generally fresh, containing chloride in concentrations typically below 25 mg/L. The 

250-mg/L isochlor was not determined for the northern extent 

of the aquifer as the highest chloride concentrations in water 

from production wells farthest downdip and along the coast 

in Monmouth County typically were less than 25 mg/L. The 

location of the 10,000-mg/L isochlor was simulated by use of 

the SHARP model (Pope and Gordon, 1999) and is located 

approximately 18 mi offshore of southern Ocean County. This 

line lies progressively closer to the coastline toward the southwest, where it is located onshore in lower Cape May County. 

Depth to the top of the aquifer in this area is considerable, and 

the aquifer here is poorly defined.

Water Levels

Water levels measured in 132 wells in New Jersey and 9 

wells in Delaware (app. 5) were used to define the 2003 potentiometric surface of the Wenonah-Mount Laurel aquifer 

(pl. 5). Simulated contours by Voronin (2004) were used to 

guide the closure of contours at the eastern or offshore edges 

of the major cones of depression where data are sparse or 

absent. The map of the 2003 potentiometric surface shows 

high ground-water levels near the outcrop in the northern 

counties of New Jersey, a ground-water low near the outcrop in central Burlington County, and three major cones of 

depression within the aquifer. The highest water levels within 

the confined aquifer occur near the outcrop in Monmouth 

County (150 ft in well 25-412); the lowest water levels occur 

in coastal Monmouth County and along the border of central 

Camden and Gloucester Counties. The northernmost cone of 

depression, located in coastal Monmouth County, is elongate 

in shape and centered beneath the boroughs of Point Pleasant, Brielle, and Spring Lake Heights, extending throughout 

a broad (440 mi2) area from Seaside Park in northern Ocean 

County north to Long Branch in Monmouth County and west 

to beyond Lakewood. Minimum water levels of -72 ft (well 

25-391) and -76 ft (well 29-37) NGVD 29 observed near the 

deepest part of the cone represent a rise of 11 ft and 14 ft, 

respectively, from levels observed in 1998. Within the area 

encompassed by the 0-ft contour, ground-water withdrawals 

from the aquifer in 2003 were estimated to be 0.2 Mgal/d. 

This volume is not substantial when considering the depth and 

breadth of this cone; the relatively low transmissivity of the 

aquifer of 500 to 700 ft2/d (Martin, 1998) coupled with longterm withdrawals from the underlying Englishtown aquifer 

system (nearly twentyfold that of the Wenonah-Mount Laurel 

aquifer) contribute to the size and persistence of the cone.

The central cone of depression, the smallest of the three, 

is centered under the community of Browns Mills and has a 

minimum water level of -32 ft NGVD 29 (well 05-366). This 

cone of depression has been represented on potentiometricsurface maps since the initial study in 1978. Ground-water 

withdrawals in 2003 from nine wells in the Browns Mills 

area were modest at approximately 0.7 Mgal/d. Since 1980, 

withdrawal amounts from these same wells have been fairly 

consistent. In 1980, withdrawals were estimated at 0.8 Mgal/d, 

peaking at 1.2 Mgal/d in the early 1990s and subsequently 

decreasing to the current amount. As a result, the area encompassed by the 0-ft contour has contracted from that in previous 

years.

The southern cone of depression, underlying parts of central Burlington, Camden, and Gloucester Counties, is demarcated by the 0-ft water-level contour. This elongated cone of 

depression is a recent phenomenon; it began to form following 

the 1983 study. Three smaller local cones have since merged 

to form the larger, more regionally extensive cone of depression present in 2003. The northernmost local cone of depression is located within the Medford Lakes quadrangle and has 

a minimum water level of -31 ft (well 05-1253). The two 

southern local cones of depression, centered within the Pitman 

East quadrangle, encompass parts of Camden and Gloucester 

Counties. The minimum water levels of -71 ft (well 07-847) 

and -23 ft (well 15-1060) NGVD 29 represent increases of 

10 and 24 ft, respectively, from the previous study 

(Lacombe and Rosman, 2001).

Water levels in Delaware range from 25 ft (well Ec51-19) 

in the outcrop area in the southern St. Georges quadrangle to 

-13 ft (well Fc42-35) in the eastern Middletown quadrangle. 

A small localized cone of depression underlies the town of 

Odessa where water levels have declined to below NGVD 29. 

A downward hydraulic gradient from the overlying 

Wenonah-Mount Laurel aquifer to the Englishtown aquifer 

system is shown along the entire section A-A' (fig. 2a). Along 

section B-B' a downward gradient is present in the updip area 

from the Wenonah-Mount Laurel aquifer to the Englishtown 

aquifer system (fig. 2b). Lacombe and Rosman (2001) noted 

an upward gradient from the Englishtown aquifer system to 

the Wenonah-Mount Laurel aquifer, based on data collected in 

1998, that is still present in 2003.

Changes in water levels during 1998 to 2003 within the 

Wenonah-Mount Laurel aquifer are depicted in figure 24a. 

Within the northern counties, water levels rose in 65 percent of 

those wells measured. The potentiometric surface of the aquifer, in general, rose 5 to 10 ft near the center of the regional 

cone of depression underlying eastern Monmouth County. 
32 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

Greater rises in water levels were observed at wells slightly 

to the north and west; rises of 21 ft (well 25-335) and 18 ft 

(well 25-14) in two wells may have been enhanced owing to 

prolonged inactivity at or near the production wells relative to 

the previous study, and actual recovery was likely less in magnitude. Away from the center of the cone, rises in water levels 

become more subtle. Ground-water withdrawals have declined 

appreciably from 1998 to 2003; estimated withdrawals from 

15 production wells located within the 0-ft contour declined 

by 30 Mgal or 30 percent. Beyond the 0-ft contour and to the 

north and west, the potentiometric surface showed little to no 

change from 1998. This was an expected result as the aquifer 

was little used here. In a small area of central Jackson Township, water levels declined from 4 ft to 6 ft since the previous 

study in 1998. Ground-water withdrawals increased in this 

vicinity during this period.

Prior to the recovery of water levels in the early 1990s 

and the subsequent stabilization of heads in the Monmouth/

Ocean County area during the last few years, water levels 

as low as -215 ft NGVD 29 observed during the late 1980s 

indicated a maximum decline of nearly 260 ft from predevelopment levels. In 1989, the NJDEP mandated reductions 

in ground-water withdrawals in the Wenonah-Mount Laurel 

aquifer and deeper aquifers in this area (CA 1) in response to 

steeply declining water levels and concern over the sustainability of the supply. Upon completion of the Manasquan 

reservoir in 1991, withdrawals from confined Coastal Plain 

aquifers in this area were reduced and replaced with surfacewater withdrawals and to a lesser extent, withdrawals from 

shallower, unconfined aquifers (Watt, 2000), initiating a 

reversal in the long-term decline in water levels. By 1993 

withdrawals from the Wenonah-Mount Laurel aquifer were 

reduced to approximately 50 percent of 1983 amounts. As a 

result, water levels in the aquifer recovered more than 50 ft 

during 1989–93, and the overall extent and depth of the cone 

of depression decreased. Water levels continued to rise in the 

cone of depression and by 2003 had recovered more than 140 

ft from lows of -215 ft and -210 ft NGVD 29 in 1988. Waterlevel changes in the Wenonah-Mount Laurel aquifer and other 

Cretaceous-age aquifers from 1988 to 2003 are shown in 

figure 25. This 15-year period was chosen for representation 

because the 1988 study was the last cycle predating mandatory 

restrictions in CA 1. Water levels recovered, on average, 30 ft 

across CA 1, by more than 40 ft across 30 percent (200 mi2) 

of the critical area, and by more than 80 ft in a 72-mi2 area (11 

percent) along coastal Monmouth and Ocean Counties.

 In the southern counties of the New Jersey Coastal Plain, 

however, ground-water levels declined between 1988 and 

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

0

4

8

12

10

WATER WITHDRAWALS, IN

MILLION GALLONS PER DAY

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 

YEAR

Northern counties

Southern counties

6

2

Figure 22. Estimated ground-water withdrawals from the Wenonah-Mount Laurel aquifer, New Jersey Coastal Plain, 1978–2003.

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 

YEAR

0.001

1

5

WATER WITHDRAWALS, IN

MILLION GALLONS PER DAY

0.01

0.1

Figure 23. Estimated ground-water withdrawals from the Mount Laurel aquifer, Delaware Coastal Plain, 1978–2001.
Englishtown Aquifer System 33

2003 as withdrawals increased due to CA 2 restrictions placed 

on the deeper PRM aquifer system. Although the decline in 

water levels in the Wenonah-Mount Laurel aquifer has abated 

during the last 5-year cycle, water levels near the center of 

the cone of depression fell more than 80 ft during this 15-year 

period. 

Ground-water withdrawals in and around the central cone 

of depression at Browns Mills have decreased slightly from 

volumes reported during the 1998 study. Consequently, moderate rises of 4 ft to 5 ft were observed during 1998 to 2003.

Water levels within the regional southern cone of depression generally have stabilized or risen subsequent to the 1998 

study. Water levels rose in most of the wells within this area 

from 1998 to 2003. The greatest rises were observed in an 

area east of Glassboro, Gloucester County, near the southwestern edge of the regional cone of depression. However, 

some double-digit recoveries in this area may be artifacts of 

the measurement process as several production wells remained 

idle for longer periods prior to measurement in 2003 than in 

the previous study. The maximum rise in water level of 29 

ft in this area occurred in observation well 15-1203 near the 

southwest edge of the regional cone of depression. This well is 

proximal to two production wells; withdrawals decreased from 

1998 to 2003 but by only a few percent. This reduction in 

withdrawals was likely not the sole cause for this rise in water 

level. To the northeast and at the center of the southern cone, 

water levels rose approximately 10 ft. Elsewhere in this area, 

water levels typically were stable to slightly rising. One exception was well 05-1253, located near Medford Lakes, where the 

water level was 15 ft higher than in 1998. Withdrawals also 

decreased, albeit slightly, during this period. To the southwest, 

in Salem County, water levels remained stable.

Ground-water withdrawals in the area underlain by the 

southern cone of depression peaked in the late 1990s at more 

than 4 Mgal/d; withdrawals had steadily increased from 0.5 

Mgal/d in 1980 to approximately 2.7 Mgal/d in 1995. Mandated restrictions on withdrawals from aquifers in the PRM 

system in southern New Jersey effected a sharp increase in 

withdrawals from the Wenonah-Mount Laurel aquifer during 1996–97. From 1993–98 the potentiometric surface of 

the Wenonah-Mount Laurel aquifer had declined more than 

40 ft in the greater Camden area. Stable to slightly declining withdrawals from 1999 to 2003 are a result of voluntary 

reductions in ground-water withdrawals in the aquifer and the 

introduction of surface water for supply into some areas by the 

expansion of New Jersey American Water Company’s Delran 

Pipeline in the late 1990s. As a result, the cones of depression 

in the Wenonah-Mount Laurel aquifer have decreased in the 

greater Camden and Gloucester areas in recent years.

Water-level hydrographs for eight USGS observation 

wells for 1978 to 2003 indicate that water levels remained 

fairly constant since the previous study in 1998 (figs. 26 and 

27). Observation well 07–478 is located approximately 4 mi 

from any major ground-water withdrawals but within the 

regional cone of depression in southern New Jersey. Following a 70-ft water-level decline over an 18-year period, 

water levels stabilized and, in fact, have begun to rise slightly 

during the last 2 years of record. Wells 33-20 and 33-252 are 

located in Salem County to the southwest of this regional 

cone. Water levels gradually declined about 8 ft in well 33-20 

during 1978–98 before stabilizing; water levels in well 33-252 

show virtually no change from 1978 to 2003. Well 07-118 is 

located near the outcrop in Camden County where groundwater withdrawals are minimal. The hydrograph of this well 

also indicates little change in water levels for the represented 

period of record. Seasonal fluctuations observed in these wells 

were moderate; variability was greatest in well 33-20 at 4 ft to 

5 ft.

Hydrographs show that water levels increased 20 and 30 

ft in wells 25-353 and 25-637, respectively, during 1990-94 

and rose an additional 15 ft during 1994–98 (fig. 27). From 

1998 to 2003 water levels stabilized or declined slightly. Both 

wells are located near the western edge of the northern cone of 

depression. The hydrograph of well 29-140, which is situated 

in an area away from substantial withdrawals, shows only 

slight decline for the period of record. Water levels in well 

25-486, located near the center of the major cone of depression, were far below NGVD 29 at -180 ft during the mid1980s. Owing to the aforementioned imposed restrictions on 

ground-water withdrawals in this region, water levels rose 

90 ft during 1990–94. From 1994 to 1998, water levels recovered by an additional 25 feet in this well. Subsequent to 1998, 

water levels here generally have stabilized. Seasonal waterlevel fluctuations were greatest near the center of the cone of 

depression, with maximum fluctuations approaching 20 ft.

Englishtown Aquifer System

The Englishtown Formation is a fine- to medium-grained 

feldspathic and quartzose sand that in some places grades to 

a silt. The formation is thickest (200 ft) in Monmouth County 

and remains sandy and thick a substantial distance downdip 

from the outcrop; therefore, the aquifer yields large quantities of water in Monmouth and Ocean County. In central 

and southern Ocean County, a confining unit partitions the 

Englishtown into an upper and lower aquifer. The Englishtown 

Formation thins considerably to the southwest, where sandy 

units become thin and discontinuous in southwestern New Jersey (Zapecza, 1989), and silt beds predominate. The downdip 

limit of the aquifer is approximately 34 mi to the southeast of 

the outcrop area in Ocean County; in the southern portion of 

the Coastal Plain, the lateral extent of the aquifer decreases 

to about 12 mi in southern Salem County. Transmissivity in 

the Englishtown aquifer system decreases significantly to 

the southwest as the geologic material becomes finer-grained 

(Nichols, 1977), and little water is produced from the aquifer 

in the southwestern part of the State (Zapecza, 1989). 

The Englishtown aquifer is recognized in Delaware; however, 

its usage is limited.
34 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 OCEAN ATLANTIC BURLINGTON SALEM MONMOUTH CUMBERLAND HUNTERDON CAPE MAY MERCER UNION MIDDLESEX GLOUCESTER CAMDEN SOMERSET HUDSON MORRIS OCEAN ATLANTIC BURLINGTON SALEM MONMOUTH CUMBERLAND HUNTERDON CAPE MAY MERCER UNION MIDDLESEX GLOUCESTER CAMDEN SOMERSET HUDSON MORRIS OCEAN ATLANTIC BURLINGTON SALEM MONMOUTH CUMBERLAND HUNTERDON CAPE MAY MERCER UNION MIDDLESEX GLOUCESTER CAMDEN SOMERSET HUDSON MORRIS OCEAN ATLANTIC BURLINGTON SALEM MONMOUTH CUMBERLAND HUNTERDON CAPE MAY MERCER UNION MIDDLESEX GLOUCESTER CAMDEN SOMERSET HUDSON MORRIS OCEAN ATLANTIC BURLINGTON SALEM MONMOUTH CUMBERLAND HUNTERDON CAPE MAY MERCER UNION MIDDLESEX GLOUCESTER CAMDEN SOMERSET HUDSON MORRIS 74° 74°30' 75° 75°30' 40° 30' 40° 39° 30' 39° 0 10 20 MILES

0 10 20 KILOMETERS

PENNSYLVANIA

DELAWARE

BAY

A T L A N T I C O C E A N

DELAWARE

FALL LINE

74° 74°30' 75° 75°30'

40°30'40°39°30'39° 0 10 20 MILES

0 10 20 KILOMETERS

PENNSYLVANIA

DELAWARE

BAY

A T L A N T I C O C E A N

DELAWARE

FALL LINE

74° 74°30' 75° 75°30'

40°30'40°39°30'39° 0 10 20 MILES

0 10 20 KILOMETERS

PENNSYLVANIA

DELAWARE

BAY

A T L A N T I C O C E A N

DELAWARE

FALL LINE

74° 74°30' 75° 75°30'

40°30'40°39°30'39° 0 10 20 MILES

0 10 20 KILOMETERS

PENNSYLVANIA

DELAWARE

BAY

A T L A N T I C O C E A N

DELAWARE

FALL LINE

74° 74°30' 75° 75°30'

40°30'40°39°30'39° 0 10 20 MILES

0 10 20 KILOMETERS

PENNSYLVANIA

DELAWARE

BAY

A T L A N T I C O C E A N

DELAWARE

FALL LINE

EXPLANATION

CRITICAL AREA—From New  Jersey Department of  Environmental Protection  (unpublished). Boundaries  are approximate and should  not be used for regulatory  compliance purposes.

AQUIFER OUTCROP 

Critical Area 1

Critical Area 2

DECLINE, IN FEET

20 - 4010 - 205 - 10

NO SUBSTANTIAL CHANGE

5 - 10 10 - 20 20 - 40

RECOVERY, IN FEET

-5 - +5

(a) (b) (c)(d) (e)

UPDIP LIMIT OF THE AQUIFER

Base from U.S. Geological Survey digital data, 1:24,000, Universal Transverse Mercator Projection, Zone 18

Figure 24. Water-level changes in the (a) Wenonah-Mount Laurel aquifer, (b) Englishtown aquifer system, (c) Upper Potomac-RaritanMagothy aquifer, (d) Middle Potomac-Raritan-Magothy aquifer, and (e) Lower Potomac-Raritan-Magothy aquifer, New Jersey Coastal Plain, 1998–2003.
Englishtown Aquifer System 35

OCEAN

ATLANTIC

BURLINGTON

SALEM

MONMOUTH

CUMBERLAND

HUNTERDON

CAPE MAY

MERCER

UNION

MIDDLESEX

GLOUCESTER

CAMDEN

SOMERSET

HUDSON MORRIS

OCEAN

ATLANTIC

BURLINGTON

SALEM

MONMOUTH

CUMBERLAND

HUNTERDON

CAPE MAY

MERCER

UNION

MIDDLESEX

GLOUCESTER

CAMDEN

SOMERSET

HUDSON MORRIS

OCEAN

ATLANTIC

BURLINGTON

SALEM

MONMOUTH

CUMBERLAND

HUNTERDON

CAPE MAY

MERCER

UNION

MIDDLESEX

GLOUCESTER

CAMDEN

SOMERSET

HUDSON MORRIS

OCEAN

ATLANTIC

BURLINGTON

SALEM

MONMOUTH

CUMBERLAND

HUNTERDON

CAPE MAY

MERCER

UNION

MIDDLESEX

GLOUCESTER

CAMDEN

SOMERSET

HUDSON MORRIS

OCEAN

ATLANTIC

BURLINGTON

SALEM

MONMOUTH

CUMBERLAND

HUNTERDON

CAPE MAY

MERCER

UNION

MIDDLESEX

GLOUCESTER

CAMDEN

SOMERSET

HUDSON MORRIS

74° 74°30' 75° 75°30'

40°30'40°39°30'39° 0 10 20 MILES

0 10 20 KILOMETERS

PENNSYLVANIA

DELAWARE

BAY

A T L A N T I C O C E A N DELAWARE

FALL LINE

74° 74°30' 75° 75°30'

40°30'40°39°30'39° 0 10 20 MILES

0 10 20 KILOMETERS

PENNSYLVANIA

DELAWARE

BAY

A T L A N T I C O C E A N DELAWARE

FALL LINE

74° 74°30' 75° 75°30'

40°30'40°39°30'39° 0 10 20 MILES

0 10 20 KILOMETERS

PENNSYLVANIA

DELAWARE

BAY

A T L A N T I C O C E A N DELAWARE

FALL LINE

74° 74°30' 75° 75°30'

40°30'40°39°30'39° 0 10 20 MILES

0 10 20 KILOMETERS

PENNSYLVANIA

DELAWARE

BAY

A T L A N T I C O C E A N DELAWARE

FALL LINE

74° 74°30' 75° 75°30'

40°30'40°39°30'39° 0 10 20 MILES

0 10 20 KILOMETERS

PENNSYLVANIA

DELAWARE

BAY

A T L A N T I C O C E A N DELAWARE

FALL LINE

EXPLANATION

CRITICAL AREA—From New  Jersey Department of  Environmental Protection  (unpublished). Boundaries  are approximate and should  not be used for regulatory  compliance purposes.

AQUIFER OUTCROP 

Critical Area 1

Critical Area 2

DECLINE, IN FEET

Greater than 60

40 - 6020 - 4010 - 205 - 10

NO SUBSTANTIAL CHANGE

5 - 10 10 - 20 20 - 40Greater than 40

RECOVERY, IN FEET

-5 - +5

(a) (b) (c)(d) (e)

UPDIP LIMIT OF THE AQUIFER

Base from U.S. Geological Survey digital data, 1:24,000, Universal Transverse Mercator Projection, Zone 18

Figure 25. Water-level changes in the (a) Wenonah-Mount Laurel aquifer, (b) Englishtown aquifer system, (c) Upper Potomac-RaritanMagothy aquifer, (d) Middle Potomac-Raritan-Magothy aquifer, and (e) Lower Potomac-Raritan-Magothy aquifer, New Jersey Coastal Plain, 1988–2003.
36 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

20 

YEAR

WATER-LEVEL ALTITUDE, IN FEET REFERENCED TO NGVD 29

40

80

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

-20

0

-40

60

07-118

33-252

33-20

07-478

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

20 

-100 

YEAR

WATER-LEVEL ALTITUDE, IN FEET REFERENCED TO NGVD 29

-80

-40

100

120

-20

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

-140

-160

-120

-180

-200

-60

29-140

25-353

25-637

25-486

0

40 

Figure 26. Water-level hydrographs for observation wells screened in the Wenonah-Mount Laurel aquifer in the southern counties of 

the New Jersey Coastal Plain, 1978–2003.

Figure 27. Water-level hydrographs for observation wells screened in the Wenonah-Mount Laurel aquifer in the northern counties, 

New Jersey Coastal Plain, 1978–2003.
Englishtown Aquifer System 37

Water Withdrawals and Extent of Freshwater

Withdrawals from the Englishtown aquifer system are 

made primarily in Monmouth and northern Ocean Counties 

and in central Camden County; however, scattered production centers are present throughout north-central Burlington 

County (fig. 28). The aquifer is used only locally in eastern 

Mercer County and near the outcrop in Salem and Gloucester 

Counties; usage here is limited primarily to domestic self supply. Total withdrawals from the Englishtown aquifer system in 

2003 were estimated to be approximately 8 Mgal/d, with those 

from the northern counties accounting for 70 percent of this 

volume (fig. 29). Total statewide withdrawals decreased from 

approximately 11 Mgal/d in 1978 to less than 7 Mgal/d by 

1996; withdrawals increased in 1997 to nearly 9 Mgal/d, then 

decreased and stabilized at approximately 8 Mgal/d through 

2003. Total withdrawals from the northern counties have 

remained largely constant at about 5.5 Mgal/d since 1993; 

previously, withdrawals decreased from 10.3 Mgal/d in 1978 

to 6.3 Mgal/d in 1992. Decreases in withdrawals from 1989 to 

1991 are most notable.

Withdrawals from the aquifer system in the southern 

counties remained constant at approximately 0.5 Mgal/d from 

1978 through 1987 (fig. 29); in 1988 withdrawal amounts 

began to increase gradually. By 1996, estimated withdrawals were nearly 1.7 Mgal/d; a sharp increase to 3.3 Mgal/d 

followed in 1997. In 1997 in Camden County, estimated 

withdrawals more than doubled from the previous year. This 

increase in the use of the Englishtown aquifer system is likely 

a consequence of restrictions placed on withdrawals from the 

deeper PRM system in 1996. Since then, withdrawals from 

this portion of the aquifer system have decreased gradually, 

and by 2003 total withdrawals were estimated at 2.4 Mgal/d.

Concentrations of dissolved chloride in samples from 

wells within the confined part of the aquifer only occasionally exceeded 25 mg/L along coastal Monmouth County, 

and concentrations in most samples were below this value. 

Therefore, the 250-mg/L isochlor is not represented on plate 6. 

A recent sample from well 25-771 on Sandy Hook confirmed 

a previous analysis of dissolved chloride in excess of 15,000 

mg/L. The saline water is present below a 5-ft-thick clay lens 

(Lacombe and Rosman, 2001) and is effectively segregated 

from the upper part of the aquifer where the ground water is 

fresh. The 10,000-mg/L isochlor was not simulated by Pope 

and Gordon (1999) and, therefore, is not represented on 

plate 6.

Water Levels

Water-level data for 84 wells screened in the Englishtown 

aquifer system are listed in appendix 6. The highest water 

levels within the confined aquifer were measured near the 

outcrop in western Monmouth County (well 25-787, 114 ft)

and the lowest, along the Monmouth/Ocean County boundary 

near Point Pleasant (well 29-52, -115 ft). The major feature of 

the ground-water flow system is a prominent cone of depression underlying northeastern Ocean and eastern Monmouth 

Counties (pl. 6). This large and deep cone of depression previously has been well documented; a 1958 piezometric map by 

Seaber (1965) showed water levels in this area in excess of 

100 ft below NGVD 29. Nichols (1977) similarly documents 

declines in water levels from 1900 to 1959 greater than 100 

ft near the border of Monmouth and Ocean Counties; from 

1959 to 1983, ground-water levels in this vicinity declined an 

additional 150 ft.

The location and configuration of this cone is similar to 

that in the overlying Wenonah-Mount Laurel aquifer; vertical leakance through the confining unit is such that there is 

good hydraulic connection between the two aquifers. Closed 

contours on the potentiometric map east and seaward from 

the center of the cone were adapted on the basis of simulations by Pope and Gordon (1999) and Voronin (2004). This 

regional cone of depression is composed of several smaller 

cones underlying production centers located at Point Pleasant, 

Spring Lake, and Lakewood. The largest of the cones underlies coastal communities from Lavallette in northern Ocean 

County to Avon-by-the-Sea in southern Monmouth. Water levels at the center of this cone near Point Pleasant were observed 

at 115 ft below NGVD 29 (well 29-532); water levels in this 

area previously were measured as low as -259 ft in 1983. During the 1998 study, the center of this cone (the -100-ft contour) 

was located at Bay Head. By 2003, slightly recovering water 

levels at Bay Head and declining water levels at Point Pleasant and Brielle caused the center to migrate 1.3 mi to the west 

and north, the approximate position observed during the 1993 

study. Five miles to the north, a small, ovate, local cone of 

depression underlies Spring Lake Borough, where a measured 

water level of -112 ft NGVD 29 (well 25-385) at a former supply well warranted a closed 100-ft contour. The two remaining 

local cones underlie areas near the town of Lakewood, and 

each is associated with a single well. Minimum water levels 

associated with the cones were -94 ft (well 29-449) and -90 ft 

NGVD 29 (well 29-438).

A local depression in the potentiometric surface at Freehold (well 25-727) is indicated on the map by the upswept 

80-ft contour in the southeastern portion of the Freehold 

quadrangle (pl. 6). This feature was initially included on the 

1993 potentiometric map and verified during the 1998 study 

(Lacombe and Rosman, 2001). The water-level altitude near 

this feature was 68 ft NGVD 29, a rise from the previous study 

of 8 ft.

The water level in observation well 25-771, located in 

Sandy Hook, New Jersey, was converted from a measured 

saltwater altitude of -1 ft to a freshwater equivalent altitude 

of 6 ft (appendix 6). Ground water at this well contained an 

extremely high concentration of dissolved chloride, in excess 

of 15,000 mg/L, resulting in a density of 1.018 g/cm3.

In the southern part of the aquifer extent, water levels 

ranged from a high of 100 ft in northern Burlington County 

to a low of 3 ft NGVD 29 in central Camden County. A small, 

local cone of depression is present in central Camden County 
38 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

1 - 99

100 - 199

200 - 299

300 - 399

Greater than 400

Aquifer outcrop

Downdip limit of 

aquifer

EXPLANATION

Water withdrawal, in 

million gallons per year

75°30' 75° 74°30' 74°

40°

30'

40°

39°

30'

39°

Base from U.S. Geological Survey digital data, 1:24,000 

Universal Transverse Mercator Projection, Zone 18, NAD 83

0 5 10 20 MILES

0 5 10 20 KILOMETERS

OCEAN

ATLANTIC

BURLINGTON

SALEM

MONMOUTH

CUMBERLAND

HUNTERDON

MIDDLESEX

CAPE MAY

MERCER

SOMERSET

GLOUCESTER

CAMDEN

UNION

MORRIS HUDSON

Dover

Buena

Camden

Avalon

Berlin

Trenton

Matawan

Marlton

Lakewood

Freehold

Red Bank

Cape May

Wildwood

Vineland

New Egypt

Eatontown

Princeton Jamesburg

Keansburg

Millville

Bridgeton

Hammonton Tuckerton

Glassboro

Toms River Lavallette

Hightstown

Sea Bright

Sayreville

Rio Grande

Ocean City

Brigantine

Manahawkin

Wilmington

Spring Lake

Asbury Park

Long Branch

Beach Haven

Ship Bottom

Browns Mills

Stone Harbor

Margate City

Ventnor City

Mays 

Landing

Forked River

Seaside Park

New Brunswick

Atlantic City

Pleasantville

Medford Lakes

Point Pleasant

East Brunswick

Barnegat Light

Egg Harbor City

Atlantic Highlands

Spring Lake 

Heights

Point Pleasant Beach

Cape May 

Court House

PENNSYLVANIA

DELAWARE

PHILADELPHIA

NEW YORK

NEW 

CASTLE

KENT

A T L A

N T I C

O C E A

N

D E L A W A R E 

B A Y

MARYLAND

KENT

CECIL

QUEEN

ANNES

R A R I T A N

B A Y

Fall Line

CAROLINE

Delaware

River

NEW JERSEY

Figure 28. Location and amount of ground water withdrawn from the Englishtown aquifer system, New Jersey Coastal Plain, 2003.
Englishtown Aquifer System 39

centered beneath wells 07-673 and 07-672. This cone of 

depression may be ephemeral; it was not identified in previous 

studies, and nearby production wells had been idle for only a 

few hours prior to measurement. Further to the south and west, 

a ground-water potentiometric low is present near the outcrop 

in north-central Gloucester County.

A downward hydraulic gradient from the overlying 

Wenonah-Mount Laurel aquifer to the Englishtown aquifer 

system is shown along the entire section A-A' (fig. 2a). This 

downward gradient is strongest in central Howell Township, Monmouth County, where water levels in the Englishtown aquifer system are as much as 60 ft lower than in the 

Wenonah-Mount Laurel aquifer. Near the center of the cone of 

depression at Point Pleasant, water levels are approximately 

30 ft to 32 ft lower in the Englishtown aquifer system than in 

the Wenonah-Mount Laurel aquifer. Along the same section, 

a downward gradient from the Englishtown aquifer system 

to the Upper PRM aquifer is present in the updip area of the 

aquifer system; water levels in the Englishtown aquifer system 

are as much as 100 ft higher that those in the underlying Upper 

PRM aquifer. Along the section in central Howell Township, 

the vertical gradient reverses and potential for ground-water 

flow is upward into the Englishtown aquifer system from the 

underlying unit. This potentiometric head differential increases 

downdip and toward the coast where it is at its maximum 

(80 ft) near the centers of the cones of depression in Spring 

Lake Heights and Point Pleasant Boroughs. 

Along section B-B' a downward gradient exists in the 

updip area from the Wenonah-Mount Laurel aquifer to the 

Englishtown aquifer system. Lacombe and Rosman (2001) 

show an upward gradient from the Englishtown aquifer system 

to the Wenonah-Mount Laurel aquifer on the basis of data 

collected in 1998 (fig. 2b). Figure 2b also shows a downward 

gradient from the Englishtown aquifer system to the Upper 

PRM aquifer.

Water-level changes from 1998 to 2003 were calculated 

for 69 of the 84 wells screened in the aquifer. Water levels 

were stable over much of the extent of the aquifer system 

(fig. 24b). Declining water levels were observed, however, 

near the northern edge of the center of the regional cone 

of depression in Monmouth County. The largest declines 

occurred in and around Spring Lake Heights, where a maximum decline of 13 ft was observed in well 25-389. Although 

combined withdrawals from the aquifer system throughout 

the northern counties had stabilized in recent years, reported 

ground-water withdrawals in and around this area have 

steadily increased since 1996. A possible explanation for this 

increase is that, as development and water demand in this area 

increased during the late 1990s, purveyors tapped into the 

unused portion of their ground-water allocation to augment 

alternative sources mandated by Critical Area regulations in 

the early 1990s.

An apparent rise in water level of 49 ft occurred in well 

29-236 from 1998 to 2003. This large rise is likely exaggerated; an anomalously low 1998 water level did not adhere to 

the general trend of recovery as indicated by water levels in 

other, nearby wells. Moreover, withdrawals at this site had 

ceased in 1988, and the moderate withdrawal amounts from 

nearby wells would not account for the low water level in this 

well. Although water levels, in general, are recovering in this 

area, the change here is likely more subtle. Elsewhere, within 

the northern extent of the aquifer, water levels generally were 

stable.

In southern New Jersey, water levels in central Camden 

County were as much as 25 ft lower than in 1998. Withdrawals in this area of the aquifer did not increase appreciably 

from 1998 to 2003; the large decline in water levels may be 

an artifact of nearby production wells in which water levels 

had not fully recovered at the time of measurement. Elsewhere 

throughout southern New Jersey, there was little change in the 

potentiometric surface.

Water-level changes from 1988 to 2003 in the Englishtown aquifer system are shown in figure 25b. Along the coast 

in southern Monmouth and northern Ocean Counties, water 

levels recovered more than 40 ft across a 245 mi2 area, and 

recoveries of 80 ft or more occurred in a 110 mi2 area as a 

result of CA 1 cutbacks. This pattern of recovery was similar 

to that of the Wenonah-Mount Laurel aquifer because both 

are connected hydraulically, though recovery was greater in 

magnitude and extent within the Englishtown aquifer system 

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

0

4

8

12

10

WATER WITHDRAWALS, IN

MILLION GALLONS PER DAY

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 

YEAR

Northern counties

Southern counties

6

2

14

16

2004 

Figure 29. Estimated ground-water withdrawals from the Englishtown aquifer system, New Jersey Coastal Plain, 1978–2003.
40 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

because most of the withdrawals affecting both aquifers were 

made from this aquifer (Spitz and others 2008).

Water-level hydrographs for nine observation wells show 

long-term and seasonal trends in the Englishtown aquifer 

system from 1978 to 2003 (fig. 30). Water levels remained 

relatively constant in wells 23-104, 25-715 and 29-138 during 

this period. Wells 23-104 and 25-715 are in the updip extent of 

the aquifer, and well 29-138 is within the central section of the 

aquifer system. All are far from the regional cone of depression in eastern Monmouth County. 

The water levels in well 25-715 located well north of the 

major cone of depression in Monmouth County has remained 

relatively constant since it was installed in 1991. Long-term 

seasonal fluctuations range from 4 ft to 5 ft; however, the 

long-term water-level change was barely perceptible. Temporal fluctuations observed in well 23-104 are in response to 

changes in precipitation and subsequent recharge; this well 

is located near the outcrop and away from any substantial 

withdrawals. From 1978–2003, the water level in this well has 

remained essentially unchanged. Water levels in well 29-138 

gradually declined 7 ft from 1978 to 1993 then rose 

8 ft through 1998; thereafter, annual high water levels stabilized at 66 ft above NGVD 29. The water level in this well 

showed no net change during the period of record. Observation well 25-250 is located in Western Monmouth County far 

from the major cone of depression and away from areas of 

substantial withdrawals. Water levels were constant during 

1978–83; thereafter, the hydrograph shows a gentle decline in 

water levels of about 9 ft during 1983 to 2003 in response to 

local ground-water withdrawals.

Observation well 05-259 is located in the Mount Holly 

area of Burlington County where this aquifer system is not a 

major source of supply. Water levels in well 05-259 declined 

approximately 5 ft during 1993–98. From 1998 to 2003, 

annual high water levels stabilized. Water levels fluctuated 

seasonally as much as 8 ft through 1988; from 1989 to 2003 

water levels fluctuated 1 ft to 3 ft.

Observation well 25-638 is located in the center of the 

Farmingdale quadrangle near the updip edge of the regional 

cone of depression. The water-level altitude in this well was 

approximately 50 ft below NGVD 29 in the late 1980s. Owing 

to conservation measures introduced in the late 1980s to 

reduce ground-water withdrawals from the Cretaceous aquifers of the northern Coastal Plain, water levels rose sharply 

(55 ft) in this well from 1990 to 1996. From 1996 to 2003, the 

annual high water levels observed at this well stabilized. Seasonal water-level fluctuations were more moderate than those 

observed in wells closer to the regional pumping center and 

ranged from 7 ft to 10 ft. Observation well 25-429 is located 

in Allaire State Park in the southeastern section of the Farmingdale quadrangle approximately 6 miles from the center of 

the regional cone of depression. The hydrograph of this well 

shows that water levels were substantially below NGVD 29 by 

1978. From 1978 to 1989, water levels declined an additional 

16 ft, as withdrawals in and near the major cone of depression stabilized. Water levels in this well rose dramatically, by 

nearly 100 ft, during 1991–96. Subsequent to 1996, water levels had stabilized at -40 ft through 2001. During the latter part 

of 2001, water levels again began to decline. The hydrograph 

for well 29-530 exhibits a similar trend; water levels rose 

nearly 120 ft during the early to mid-1990s; stabilized, then 

declined from 2001 to 2003. Seasonal fluctuations were greatest in this well; during and following the period of substantial 

recovery, water levels fluctuated by as much as 60 ft in a given 

year. Observation well 29-534, located at the southern edge 

of the regional cone of depression, is screened in the lower 

hydrologic unit of the aquifer system. Water levels in this well 

declined approximately 10 ft during 1978–92; from 1992 to 

2003, water levels increased by 37 ft. 

Upper Potomac-Raritan-Magothy 

Aquifer

The upper aquifer of the Potomac-Raritan-Magothy 

aquifer system is generally equivalent to the Magothy Formation in New Jersey (Zapecza, 1989). The aquifer consists of 

coarse-grained permeable sands with thin interbedded clay 

and clayey silt layers present locally. The Upper PRM is the 

most extensive unit within the aquifer system. The outcrop 

of the aquifer extends in a northeast to southwest trending 

band from the Raritan Bay to the Delaware River adjacent to 

Salem County and is primarily coincident with the outcrop 

of the Magothy Formation. The aquifer is well defined in the 

offshore areas of Monmouth and Ocean Counties but less well 

defined in Atlantic, Cumberland, and Cape May Counties. The 

thickness of the sand interval ranges from more than 200 ft in 

eastern Monmouth County to about 50 ft in Cape May County. 

Transmissivity of the aquifer is greatest in the eastern part of 

Monmouth County; however, the aquifer remains highly transmissive throughout Monmouth as well as in western Camden 

and Gloucester Counties. In Monmouth and Middlesex Counties, the aquifer is locally referred to as the Old Bridge aquifer. 

In Delaware, Vroblesky and Fleck (1991) and Martin (1984) 

refer to the aquifer as the Magothy aquifer. The updip limit of 

the aquifer is within the outcrop of the Magothy Formation in 

northern New Castle County, and the downdip limit extends 

into eastern Sussex County.

Water Withdrawals and Extent of Freshwater

Withdrawals from the Upper PRM aquifer are made 

throughout its extent in Middlesex, Monmouth, and northern 

Ocean Counties (fig. 31); however, in the southern part of the 

study area, withdrawals are confined to a narrow band extending from the outcrop to about 12 mi downdip. Beyond this 

limit, depth to the top of the aquifer is sufficiently deep, and 

dissolved solids in the ground water are elevated such that use 

of shallower aquifers is more desirable. The primary production centers are located in eastern Middlesex County within 
Upper Potomac-Raritan-Magothy Aquifer 41

and near the outcrop of the Magothy Formation and in central 

Camden and Gloucester Counties. Substantial withdrawals 

also are made in northwestern Burlington, northern Ocean, 

and throughout Monmouth County. Minor withdrawals are 

made in Mercer and Salem Counties within close proximity 

to the updip limit of the aquifer. Minor withdrawals also are 

made in central New Castle County, Delaware. In Maryland, 

withdrawals are made in the bordering counties of Cecil, Kent, 

and Queen Anne’s; however, the greatest use of the Magothy 

aquifer in Maryland occurs beyond the study area.

Estimated withdrawals in New Jersey from 1978 to 

2003 ranged from 52 to 80 Mgal/d; withdrawals during 2003 

were at a 25-year low of approximately 52 Mgal/d (fig. 32). 

Ground-water withdrawals in 2003 were greatest in Middlesex 

County; withdrawals here were nearly twice that of Gloucester, the county with the next highest withdrawal amounts. 

From 1978 to 1989 withdrawals ranged from 65 to 80 Mgal/d; 

thereafter, withdrawals statewide steadily decreased through 

2003. In the northern counties, estimated withdrawals during 2003 of 30 Mgal/d were greater than those from southern counties. Withdrawals in the northern counties were at 

their greatest from 1981 to 1984 (approximately 47 Mgal/d); 

following 1984, withdrawals generally decreased to 2003 

amounts. The largest decreases in withdrawals in the northern counties occurred during 1988–89 and 2002–03. In the 

southern counties, water withdrawals generally were stable 

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

60

80

100

120

-240

-220

-200

0

0

10

20

30

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

YEAR

WATER-LEVEL ALTITUDE, IN FEET REFERENCED TO NGVD 29

25-250

1978 

23-104

29-138

05-529

25-715

25-638

29-534

25-429

29-530

20

40

-20

-40

-60

-80

-100

-120

-140

-160

-180

Figure 30. Water-level hydrographs for observation wells screened in the Englishtown aquifer system, New Jersey Coastal Plain, 

1978–2003.
42 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

(approximately 30 to 32 Mgal/d) from 1978 through 1995; in 

1996 withdrawals decreased to 27 Mgal/d. Mandatory restrictions on withdrawals from the Upper PRM aquifer further 

reduced these amounts and, from 1997 to 2003, withdrawals 

ranged from 22 to 25 Mgal/d. 

Estimated water withdrawals from the Upper PRM aquifer (Magothy aquifer) in Delaware remained at less than 

0.75 Mgal/d during 1978 to 2001 (fig. 33). From 1978 to 

1988, withdrawals were insubstantial, at much less than 0.5 

Mgal/d.

The 250-mg/L isochlor is shown on plate 7. The location 

of this line in the Raritan Bay area was originally mapped by 

Schaefer and Walker (1981). Increased chloride concentrations 

in several wells in recent years indicate the slight landward 

movement (nearly 0.25 mi) of the saltwater front. The location 

of the 250-mg/L isochlor in southern New Jersey was determined on the basis of water-quality data stored in the USGS 

water-quality database. The previous position of this line 

bisected Salem County from west to east and did not extend 

beyond its border (Lacombe and Rosman, 2001); however, 

recent data warranted a modification of this line. The saltwater 

front arcs in an updip direction and toward the Delaware River 

in southern Gloucester County. The updated location of this 

line reflects a reinterpretation of existing, as well as the inclusion of new, data and does not imply movement of the front 

nor increased chloride concentrations in this area.

In Delaware, the 250-mg/L isochlor was mapped 

by Cushing and others (1973, pl. 3). The location of the 

10,000-mg/L isochlor in New Jersey was simulated by Pope 

and Gordon (1999). The location of the 10,000-mg/L isochlor 

in Delaware is from Vroblesky and Fleck (1991). 

Water Levels

Water-level measurements from 210 wells screened in the 

Upper Potomac-Raritan-Magothy aquifer were used to define 

the regional potentiometric surface during the fall of 2003 

(app. 7). Maximum water-level altitudes were measured in 

and near the outcrop area within the Hightstown quadrangle; 

minimum water-level altitudes were measured in central 

Camden County. The major feature of the potentiometric 

surface is the extensive cone of depression that extends from 

the Raritan Bay in the northeastern section of the study area 

to eastern Maryland (pl. 7). This regional cone of depression 

can be divided into three subregional segments (Lacombe and 

Rosman, 2001), a northeastern, a central, and a southwestern 

segment. 

The northeastern segment of this cone encompasses 

northern Ocean County and most of Monmouth County. In 

the northernmost section the position of both the 0-ft and 

-20-ft contours are similar to those represented in 1998. The 

slight contraction of the -20-ft contour at its northeastern edge 

reflects the small rises in water levels near this boundary. 

Within this segment, the lowest water levels occur in northern 

Ocean County where, near Seaside Park, a water level of -60 ft 

NGVD 29 was measured in a well (29-1365) around which a 

small cone of depression had formed. The water level was substantially lower than that observed in 1998. This well was not 

operational during the 1993 study, so further comparison was 

not possible. A subsequent measurement by the USGS as well 

as purveyor-reported data confirmed this water level. To the 

west a small cone of depression in the Lakehurst quadrangle 

reported in 1998 has expanded to the south and east to include 

four additional wells, forming an elongated cone of depression 

from Lakehurst to Toms River in Ocean County. Ground-water 

withdrawals in this area have substantially increased since 

the 1998 study. Elsewhere in the north, water levels typically 

ranged from 0 to -20 ft NGVD 29; however, the potentiometric surface is punctuated with several small cones of depression centered over single wells or well fields. Such localized 

cones are located in the Keyport, Marlboro, Adelphia, Long 

Branch, and Asbury Park quadrangles. Water levels at the 

centers of these cones were, for the most part, slightly below 

-20 ft NGVD 29, though water levels of -33 ft (well 25-360) 

and -41 ft NGVD 29 (well 25-334) were measured near Red 

Bank and Asbury Park, respectively. Recovering water levels 

near Red Bank have caused this cone to recede; however, the 

water level in well 25-334 near the center of the Asbury Park 

localized cone was lower than in 1998. In general, water levels 

across the aquifer in the northern Coastal Plain remained about 

the same as 5 years ago, except in northern Ocean County, 

where water levels declined 10 to 33 ft (fig. 24c).

The central segment of the regional cone of depression encompasses much of Burlington, Camden, Gloucester, 

and eastern Salem Counties. Where data are absent, maps of 

simulated water levels by Martin (1998) and Voronin (2004) 

were adapted to close the contours on the downdip edge of the 

regional cone. This central segment, centered under the Borough of Berlin in Camden County, has a minimum water-level 

altitude of -90 ft NGVD 29 (well 07-15). Water levels previously measured near the center of this cone were in excess of 

100 ft below NGVD 29. From 1998 to 2003, water levels in 

this central segment, in general, remained stable or recovered 

modestly; however, water levels at the center of the cone rose 

by as much as 24 ft. The -100-ft contour line present on the 

1998 potentiometric map has disappeared altogether, whereas 

the -80-ft contour surrounds a single production well in the 

Berlin well field. The -40 and -60-ft contour lines show contraction downdip and to the areas north and south of the central cones. A single-well cone of depression with a minimum 

water-level altitude of -86 ft (well 05-759) has formed in the 

Medford Lakes quadrangle. To the southwest, a small cone of 

depression also is present in Glassboro, New Jersey. This cone 

is a remnant part of the -60-ft contour line from 1998; water 

levels measured in wells here did not exhibit increases like 

many wells in the area in 2003. Although sporadic declines 

in water levels were observed in the central segment of the 

regional cone, in general, water levels rose during 1998 to 

2003. Recovery typically was moderate; however, substantial 

rises occurred near the center of the cone in Camden County.
Upper Potomac-Raritan-Magothy Aquifer 43

1 - 99

100 - 199

200 - 299

300 - 399

Greater than 400

Aquifer outcrop

EXPLANATION

Water withdrawal, in 

million gallons per year

75°30' 75° 74°30' 74°

40°

30'

40°

39°

30'

39°

Base from U.S. Geological Survey digital data, 1:24,000 

Universal Transverse Mercator Projection, Zone 18, NAD 83

0 5 10 20 MILES

0 5 10 20 KILOMETERS

OCEAN

ATLANTIC

BURLINGTON

SALEM

MONMOUTH

CUMBERLAND

HUNTERDON

MIDDLESEX

CAPE MAY

MERCER

SOMERSET

GLOUCESTER

CAMDEN

UNION

MORRIS HUDSON

Dover

Buena

Camden

Avalon

Berlin

Trenton

Matawan

Marlton

Lakewood

Freehold

Red Bank

Cape May

Wildwood

Vineland

New Egypt

Eatontown

Princeton Jamesburg

Keansburg

Millville

Bridgeton

Hammonton Tuckerton

Glassboro

Toms River Lavallette

Hightstown

Sea Bright

Sayreville

Rio Grande

Ocean City

Brigantine

Manahawkin

Wilmington

Spring Lake

Asbury Park

Long Branch

Beach Haven

Ship Bottom

Browns Mills

Stone Harbor

Margate City

Ventnor City

Mays 

Landing

Forked River

Seaside Park

New Brunswick

Atlantic City

Pleasantville

Medford Lakes

Point Pleasant

East Brunswick

Barnegat Light

Egg Harbor City

Atlantic Highlands

Spring Lake 

Heights

Point Pleasant Beach

Cape May 

Court House

PENNSYLVANIA

DELAWARE

PHILADELPHIA

NEW YORK

NEW 

CASTLE

KENT

A T L A

N T I C

O C E A

N

D E L A W A R E 

B A Y

MARYLAND

KENT

CECIL

QUEEN

ANNES

R A R I T A N

B A Y

Fall Line

CAROLINE

Delaware

River

NEW JERSEY

Figure 31. Location and amount of ground water withdrawn from the Upper Potomac-Raritan-Magothy aquifer, New Jersey, Delaware, 

and Maryland Coastal Plain, 2003.
44 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

The southwestern segment of the regional cone of depression underlies New Castle, Delaware, and western Salem 

County, New Jersey. Water levels in this area typically ranged 

from -21 to -30 ft NGVD 29. A single well cone of depression 

exists in the Middletown, Delaware, well field probably due 

to recent ground-water withdrawals. With the exception of the 

Middletown well, water levels in this area had stabilized or 

recovered slightly since 1998.

A downward hydraulic gradient is present from the Englishtown aquifer system to the Upper PRM aquifer in the western part of the aquifer, but in near-shore areas, the hydraulic 

gradient is upward from the aquifer to the Englishtown aquifer 

system as shown in section A-A' (fig. 2a). The downward 

gradient is strongest in the updip part of the aquifer where 

water levels in the overlying Englishtown aquifer system were 

as much as 115 ft higher than those in the Upper PRM aquifer. 

This downward gradient weakens to the south and east, where 

in central Howell Township, Monmouth County, New Jersey, 

the gradient is nearly neutral for a short distance. The gradient reverses in the eastern part of the township and steepens 

toward the coast, where, near Point Pleasant, Ocean County, 

water levels are nearly 80 ft greater than in the Englishtown 

aquifer system. Similarly, the hydraulic gradient between the 

Upper PRM aquifer and the Middle PRM aquifer is downward in the updip areas and upward along the Coast (fig. 2a). 

However, the head differential between the Upper and Middle 

aquifers is much more temperate than that between the Upper 

PRM aquifer and the Englishtown aquifer system. A downward hydraulic gradient is present from the Englishtown 

aquifer system to the Upper PRM aquifer along the updip 

portion of section B-B' (fig. 2b); the lack of water-level data 

within the Englishtown aquifer system in downdip areas precludes interpretation of interaquifer flow here. Martin (1998) 

and Lacombe and Rosman (2001) note the continued potential 

for downward flow from the Englishtown aquifer system to 

the Upper PRM aquifer in the downdip areas. The hydraulic gradient between the Upper and Middle PRM aquifer is 

nearly neutral in the updip area and upward to the Upper PRM 

aquifer in the downdip area. This upward gradient is strongest 

in central Camden and western Atlantic Counties, where water 

levels are typically 10 ft higher in the Middle aquifer than in 

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

0

60

WATER WITHDRAWALS, IN

MILLION GALLONS PER DAY

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 

YEAR

Northern counties

Southern counties

20

80

100

40

Figure 32. Estimated ground-water withdrawals from the Upper Potomac-Raritan-Magothy aquifer, New Jersey Coastal Plain, 

1978–2003.

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 

YEAR

0

0.5

2.0

WATER WITHDRAWALS, IN

MILLION GALLONS PER DAY 1.0

1.5

Figure 33. Estimated ground-water withdrawals from the Magothy aquifer, Delaware Coastal Plain, 1978–2001.
Middle and undifferentiated Potomac-Raritan-Magothy Aquifer 45

the Upper aquifer, but weakens somewhat near the downdip 

limit of the aquifer.

From 1988 to 2003, water levels in the aquifer recovered 

on average 10 ft to 20 ft across a large portion of Monmouth 

County; scattered areas in the western part of the county 

experienced slightly larger recoveries (fig. 25c). Groundwater withdrawals from the aquifer in the northern counties 

were reduced to approximately 75 percent of 1988 volumes; 

furthermore, withdrawals were reduced to approximately 60 

percent of 1983 volumes due to CA 1 regulations. In southern 

New Jersey, within the central segment of the regional cone of 

depression (CA 2), water-level recovery was generally 

10 ft to 30 ft, with maximum rises of nearly 40 ft in northcentral Camden County.

Water-level hydrographs for seven observation wells 

located in the northern counties are shown in figure 34. Observation wells 23-292 and 23-228 are located near Jamesburg, 

New Jersey, within or near the outcrop area where water levels 

in the aquifer were typically at their highest. The two wells 

are located within 3 mi of one another, and their respective 

hydrographs indicate a similar trend in water levels. Water levels at both sites decreased about 8 ft to 10 ft during 1978–82 

but remained relatively constant to slightly rising through 

1998. Water levels in well 23-292 were stable from 1998 to 

2003; however, water levels in 23-228 declined slightly during 

this period. Well 23-228 is situated in an area of substantial 

withdrawals; however, its location proximal to a recharge area 

likely tempers the effect of both seasonal and long-term withdrawals. The hydrographs for wells 23-351 and 23-180 show 

slight water-level increases of 1 ft to 3 ft during 1978–2003. 

Both wells are located near major pumping centers but away 

from the regional cone of depression. Because they are within 

the outcrop area, both wells are sensitive to recharge from precipitation, and seasonal fluctuations due to nearby withdrawals are restrained. Observation wells 25-316 and 25-206 are 

located within but near the northern edge of the regional cone 

of depression, along the Raritan Bay. Water levels were stable 

to slightly rising from 1978 to 1986; thereafter, following a 

brief period of decline through 1989, water levels rose 

8 ft to 10 ft through 2003. Observation well 25-639 is located 

in the Farmingdale quadrangle near the center of the northern 

segment of the regional cone of depression. Water levels in 

this well rose approximately 20 ft from 1989 to 1994, then stabilized through 2001 before declining slightly during 2001–03. 

The recovery in water levels in the early to mid-1990s is a 

result of CA 1 reductions in ground-water withdrawals from 

the Cretaceous aquifers as well as the increased use of alternate surface-water sources such as the Manasquan, Swimming 

River, and Glendola Reservoirs.

Hydrographs for nine observation wells located in the 

southern counties of New Jersey and Delaware are shown in 

figure 35. Observation wells 15-728 and Eb23-22 are located 

near the updip limit of the aquifer in Gloucester County, New 

Jersey, and New Castle County, Delaware, respectively. The 

hydrographs show that, despite seasonal fluctuations of 4 ft 

to 6 ft., water levels remained constant from the beginning of 

the period of record through 2003. Observation well 33-253 is 

located in Salem County, New Jersey, in the area affected by 

the southwestern segment of the regional cone of depression. 

The aquifer is not used locally, and therefore, water levels did 

not vary seasonally; however, regional stresses from long-term 

withdrawals have caused water levels to decline by 6 ft from 

1978–2003. Similarly, observation well Gd33-05, located in 

eastern Delaware along the border of New Castle and Kent 

Counties, lies within the area underlain by the regional cone 

but far from a production center. From 1978 to 2003, water 

levels gradually declined approximately 18 ft. Observation 

wells 05-258, 07-117, 07-322, 07-477, and 15-741 are located 

within the central segment of the regional cone of depression. Hydrographs for wells 05-258, 07-117, and 07-477 show 

water-level declines ranging from 10 ft to 16 ft from 1978 to 

1994; from 1994 to 2003, water levels in the same wells rose 

10 ft to 25 ft. Seasonal water-level fluctuations were greatest 

in wells 07-477 and 07-117 because of their location near the 

center of the Camden cone of depression. Annual variability 

ranged from 5 ft to 10 ft during the early portion of the period 

of record and ranged from 10 ft to 25 ft per year during the 

latter. Water levels in wells 07-322 and 15-741 rose 15 ft and 

13 ft, respectively during this same period. Recovery of water 

levels subsequent to 1994 in these wells is the result of CA 2 

restrictions.

Middle and undifferentiated PotomacRaritan-Magothy Aquifer

The undifferentiated and Middle aquifer of the PotomacRaritan-Magothy aquifer system extends from the Raritan Bay 

in the northeastern part of the study area to Maryland in the 

southwest. In the northern Coastal Plain northeast of Burlington County, the aquifer is locally referred to as the Farrington 

aquifer. The aquifer is well defined from the outcrop area to 

about 20 mi downdip, beyond this distance the aquifer cannot 

be separated from the underlying sediments within the PRM 

aquifer system. Zapecza (1989) refers to the aquifer east of the 

area as the undifferentiated PRM aquifer. Similarly, in southern New Jersey the aquifer can be traced in the subsurface 

from the outcrop to an area extending approximately 

10 mi to 12 mi downdip, beyond which the aquifer is indistinguishable from the Lower PRM aquifer. Where the confining 

unit between the Lower and Middle aquifers is absent, the 

aquifer conformably overlies bedrock or weathered bedrock. 

The transmissivity of the aquifer is greatest in northern Ocean 

County (greater than 16,000 ft2/d), but the aquifer is most 

productive in Burlington, Camden, and Gloucester Counties 

in and within a short distance from the outcrop area where the 

transmissivity ranges from 6,000 ft2/d to more than 10,000 

ft2/d (Martin, 1998). To the southwest, discontinuous silt and 

clay beds within the Middle aquifer in Salem County inhibit 

its productivity. The Middle Potomac-Raritan-Magothy aquifer is continuous into Delaware and Maryland. In Delaware 
46 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

and eastern Maryland, Vroblesky and Fleck (1991) refer to this 

unit as the Patapsco aquifer. The updip limit of the aquifer is 

within the outcrop of the Potomac Formation in northern New 

Castle County; the downdip limit extends into eastern Sussex County and is demarcated by the 10,000-mg/L isochlor of 

Meisler (1989).

Water Withdrawals and Extent of Freshwater

Ground-water withdrawals from the undifferentiated 

and Middle PRM aquifer occur throughout its extent from the 

Raritan Bay to Maryland. The distribution of withdrawals is 

similar to that in the Upper PRM aquifer, in that withdrawals 

are made in the updip and central areas of the aquifer throughout the northern counties of New Jersey but are confined 

to a narrow band extending from the outcrop to about 8 mi 

downdip in the southern counties (fig. 36). Beyond this limit, 

the presence of elevated dissolved solids in the ground water 

inhibits development of the aquifer. The primary production centers in New Jersey are located in eastern Middlesex 

and northern Monmouth Counties, northern Ocean County, 

and Burlington, Camden, Gloucester, and Salem Counties. 

In Delaware, withdrawals from the equivalent of the Middle 

PRM aquifer are made primarily within and near the outcrop 

in northern New Castle County; however, smaller production 

centers are present in the central part of the county.

Estimated ground-water withdrawals in New Jersey from 

1978 to 2003 ranged from 61 to 84 Mgal/d. (fig. 37). Withdrawals from the aquifer were greatest during the early 1980s; 

from 1983 to 2000, ground-water withdrawals decreased from 

82 to 63 Mgal/d. In 2001 withdrawals from the aquifer again 

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

Missing

data

Missing

data

70 

WATER-LEVEL ALTITUDE, IN FEET REFERENCED TO NGVD 29

20

50

90

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

0

10

-10

30

23-292

23-228

23-351

23-180

60

80 

25-316

25-206

25-639

0

10

-40

-30

-20

-10

YEAR

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

Figure 34. Water-level hydrographs for observation wells screened in the Upper Potomac-Raritan-Magothy aquifer in the northern 

counties, New Jersey Coastal Plain, 1978–2003.
Middle and undifferentiated Potomac-Raritan-Magothy Aquifer 47

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

-20 

WATER-LEVEL ALTITUDE, IN FEET REFERENCED TO NGVD 29

-80

50

0

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

-100

-90

-60

10

33-253

07-322

05-258

-30

-10 

07-477

07-117

-50

-70

-110

-40

-100

-90

-80

YEAR

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

-70

-60

-50

-40

-30

-20

40

30

Gd33-05

15-728

Eb23-22

15-741

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

Missing

data

Figure 35. Water-level hydrographs for observation wells screened in the Upper Potomac-Raritan-Magothy aquifer in the southern 

counties, New Jersey Coastal Plain and Delaware, 1978–2003.
48 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

1 - 99

100 - 199

200 - 299

300 - 399

Greater than 400

Aquifer outcrop

EXPLANATION

Water withdrawal, in 

million gallons per year

75°30' 75° 74°30' 74°

40°

30'

40°

39°

30'

39°

Base from U.S. Geological Survey digital data, 1:24,000 

Universal Transverse Mercator Projection, Zone 18, NAD 83

0 5 10 20 MILES

0 5 10 20 KILOMETERS

OCEAN

ATLANTIC

BURLINGTON

SALEM

MONMOUTH

CUMBERLAND

HUNTERDON

MIDDLESEX

CAPE MAY

MERCER

SOMERSET

GLOUCESTER

CAMDEN

UNION

MORRIS HUDSON

Dover

Buena

Camden

Avalon

Berlin

Trenton

Matawan

Marlton

Lakewood

Freehold

Red Bank

Cape May

Wildwood

Vineland

New Egypt

Eatontown

Princeton Jamesburg

Keansburg

Millville

Bridgeton

Tuckerton

Hammonton

Glassboro

Lavallette Toms River

Hightstown

Sea Bright

Sayreville

Rio Grande

Ocean City

Brigantine

Manahawkin

Wilmington

Spring Lake

Asbury Park

Long Branch

Beach Haven

Ship Bottom

Browns Mills

Stone Harbor

Margate City

Ventnor City

Mays 

Landing

Forked River

Seaside Park

New Brunswick

Atlantic City

Pleasantville

Medford Lakes

Point Pleasant

East Brunswick

Barnegat Light

Egg Harbor City

Atlantic Highlands

Spring Lake 

Heights

Point Pleasant Beach

Cape May 

Court House

PENNSYLVANIA

DELAWARE

PHILADELPHIA

NEW YORK

NEW 

CASTLE

KENT

A T L A

N T I C

O C E A

N

D E L A W A R E 

B A Y

MARYLAND

KENT

CECIL

QUEEN

ANNES

Fall Line

CAROLINE

R A R I T A N

B A Y

Delaware

River

NEW JERSEY

Figure 36. Location and amount of ground water withdrawn from the Middle and undifferentiated Potomac-Raritan-Magothy aquifer, 

2003.
Middle and undifferentiated Potomac-Raritan-Magothy Aquifer 49

increased; in 2003 total withdrawals in New Jersey were estimated at 68 Mgal/d.

In the northern counties of New Jersey, estimated withdrawals ranged from 26 to 43 Mgal/d from 1978 to 2003. 

Withdrawals steadily decreased during 1980–96; the largest 

single-year reduction in withdrawals occurred between 1988 

and 1989. From 1997 to 2003, however, withdrawals again 

increased and, by 2003, were estimated at 31 Mgal/d. In the 

northern counties, ground-water withdrawals typically were 

greatest in Middlesex County. At the maximum in 1980, withdrawals in Middlesex County were in excess of 

17 Mgal/d. Declining water levels and saltwater encroachment 

along tidal reaches of the Raritan River and its tributaries led 

to the systematic reduction of withdrawals in this area, and by 

1990, withdrawals were estimated at approximately 8 Mgal/d. 

Average daily withdrawals in Middlesex County have since 

stabilized at approximately 9 to 10 Mgal. 

Ground-water withdrawals from the aquifer in the southern counties were slightly higher than those in northern counties during 1978 to 2003. Estimated ground-water withdrawals 

in the south ranged from 34 to 46 Mgal/d during this period. 

Ground-water withdrawals in the combined southern counties 

peaked in 1983; generally, withdrawals declined through 1999. 

Withdrawals from the aquifer in southern counties increased 

slightly from 2000 to 2003. Estimated withdrawals in 2003 

were approximately 37 Mgal/d. Withdrawals from the aquifer typically were greatest in Burlington County and least in 

Salem County.

Ground-water withdrawals from the Middle PRM aquifer 

in Delaware ranged from approximately 6.5 to 12 Mgal/d 

during 1978 to 2001 (fig. 38). Withdrawal amounts varied 

throughout the 1980s and early 1990s; the lesser amounts, 

however, were probably an artifact of inconsistent allocation 

reporting. Lacombe and Rosman (2001) noted that withdrawals remained stable at about 9 Mgal/d during 1978–97. Estimated withdrawals from the aquifer in Delaware in 2001 were 

about 12 Mgal/d.

The extent of freshwater in the northern Coastal Plain 

remained about the same as in 1998. The location of the 

250-mg/L isochlor in the Raritan Bay area (pl. 8) is modified from Schaefer (1983) and Lacombe and Rosman (2001). 

In southern New Jersey, the location of this line has been 

modified from Gill and Farlekas (1976) and Lacombe and 

Rosman (2001). Increased data coverage in Gloucester and 

Salem Counties necessitated the modification of the 250-mg/L 

isochlor in southern New Jersey. The saltwater front bends in 

an updip direction toward the Delaware River near the Salem 

and Gloucester County border, incorporating areas where 

ground water near Woodstown and Mullica Hill is known to 

contain elevated dissolved solids and chlorides. The 250-mg/L 

isochlor in Delaware is from Cushing and others (1973). The 

location of the 10,000-mg/L chloride line in New Jersey was 

simulated by Pope and Gordon (1999) using a saltwater model 

of the aquifers. In Delaware, the 10,000-mg/L isochlor is from 

Vroblesky and Fleck (1991).

Water Levels

Water levels measured in 204 wells screened in the undifferentiated and Middle PRM aquifer in New Jersey, Delaware, 

and eastern Maryland during the fall of 2003 are reported in 

appendix 8; the interpreted potentiometric surface is shown in 

plate 8. Maps of simulated water levels by Voronin (2004) and 

Martin (1984) guided the closure of potentiometric contours 

in the southeastern part of the study area as well as in New 

Castle County, Delaware. Maximum water levels of greater 

than 70 ft NGVD 29 were observed near the updip limit 

within the Hightstown and Jamesburg quadrangles, Middlesex 

County, New Jersey. This potentiometric high corresponds to 

the potentiometric high of the overlying Upper PRM aquifer. 

Water levels were lowest in central Camden County. The 

major feature of the potentiometric surface is the regionally 

extensive cone of depression that encompasses much of the 

study area and extends from the Raritan Bay in the northeast 

to eastern Maryland in the southwest. Much like the regional 

cone in the Upper PRM aquifer, several discrete subregional 

cones or areas of low water levels are present within the northern, north central, central, and southwestern parts of the larger 

cone.

The northern segment underlies eastern Middlesex and 

part of northwestern Monmouth County in New Jersey and 

lies within Critical Area 1. Water levels in the northern segment of the regional cone ranged from -12 to -38 ft 

NGVD 29 in 2003; water levels generally were lowest along 

the Raritan Bay front and somewhat higher toward the 

outcrop. The area encompassed by the -20-ft potentiometric contour has expanded slightly from that in the previous 

study; water levels in well fields in Sayreville and Old Bridge, 

Middlesex County, and north of Marlboro, Monmouth County, 

were at or slightly below this level in 2003. From 1998 to 

2003, despite no appreciable increase in ground-water withdrawals, water levels declined throughout the area from 1 ft to 

nearly 10 ft (fig. 24d). 

The north-central area of the regional cone of depression 

includes much of southern Monmouth County, New Jersey. 

Water levels in this segment ranged from 7 ft (well 25-728) to 

30 ft (well 25-725) below NGVD 29. Minimum water levels 

occurred near a production center near Freehold; water levels 

to the north and west were slightly higher. The small circular 

cone in southern Monmouth County depicted on the 1998 

map has expanded slightly and shifted to the east; waterlevel declines of 3 ft to 5 ft in this area resulted from steadily 

increasing ground-water withdrawals through 2003. 

The central segment of the regional cone of depression underlies a broad area of the New Jersey Coastal Plain 

extending from Ocean County southwest to Gloucester and 

eastward to Atlantic County. Water levels in this segment 

ranged from 0 ft to -72 ft NGVD 29; the lowest water levels, 

below -60 ft NGVD 29, were measured in central Camden 

County and in the Mount Holly area of Burlington County. 

The shape and orientation of this cone is similar to that in the 

overlying Upper PRM aquifer, though water levels gener-
50 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

ally are higher in the Middle aquifer, indicating a potential 

for upward flow from the aquifer. The center of this segment 

underlies central Camden County, straddling the boundary 

between the Clementon and Runnemede quadrangles. The 

potentiometric low of -65 ft in the center of the cone occurred 

in an area about 3.5 mi to the south and east of production 

centers that use the Middle aquifer; however, substantial withdrawals made from the underlying Lower PRM aquifer likely 

contribute to the depth of the cone. To the north and east, a 

single-well cone of depression persists in Burlington County 

near Mount Holly, where the water-level altitude was below 

-70 ft NGVD 29. Near the southeastern edge of this central 

segment, depths to the top of the aquifer are considerable, and 

the ground water is highly mineralized. Consequently, wells 

screened in the aquifer are sparse. Observation well 11-137, in 

eastern Cumberland County, New Jersey, is the farthest downdip well screened in the aquifer that was used in this study; the 

chloride concentration in the ground water of approximately 

11,000 mg/L results in a density of 1.012 g/cm3. Correcting for 

density, the saltwater level of -53 ft yields a freshwater equivalent altitude of -30 ft NGVD 29. The water level in 

well 01-1221, located in Buena to the north and approximately 

13 mi updip, also was converted from a saltwater level for 

similar reasons. In northern Ocean County, water levels ranged 

from -21 ft to -33 ft NGVD 29, with lowest water levels 

occurring at or near production wells throughout Jackson 

Township.

The southwestern segment of the regional cone 

of depression encompasses Salem County in New Jersey 

and most of New Castle County in Delaware. Water levels 

in Salem County ranged from -15 ft (well 33-305) to -70 ft 

NGVD 29 (well 33-934) in 2003. Water levels were highest 

in the central part of the county and lowest along the Delaware River where localized cones of depression are present 

in Pennsville and on Artificial Island. In New Castle County, 

Delaware, water levels were below 0 ft NGVD 29 across 

much of the aquifer extent. Water levels ranged from greater 

than 60 ft near the updip limit of the aquifer in the northwestern part of the St. Georges quadrangle to -58 ft NGVD 29 in 

the Middletown area.

The 5-year change in water levels in the Middle PRM 

aquifer is shown in figure 24d. From 1998 to 2003, water lev1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

0

40

100

80

WATER WITHDRAWALS, IN

MILLION GALLONS PER DAY

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 

YEAR

Northern counties

Southern counties

60

20

2004 

Figure 37. Estimated ground-water withdrawals from the Middle and undifferentiated Potomac-Raritan-Magothy aquifer, New Jersey 

Coastal Plain, 1978–2003.

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

YEAR

0

2

14

WATER WITHDRAWALS, IN

MILLION GALLONS PER DAY

No dataNo data

4

6

8

10

12

16

Figure 38. Estimated ground-water withdrawals from the Middle Potomac-Raritan-Magothy aquifer, Delaware Coastal Plain, 

1978–2001.
Middle and undifferentiated Potomac-Raritan-Magothy Aquifer 51

els were generally stable or had risen slightly throughout most 

of the central segment, except in limited areas near production 

centers in north-central Camden and northern Ocean Counties. 

In north-central Camden County water levels fell by 4 to 13 ft 

near production wells as a result of an 18 percent increase in 

withdrawals relative to 1998 volumes. Similarly, withdrawals 

increased by about 18 percent among seven production wells 

in northern Ocean County, resulting in water-level declines 

from 1 ft to 10 ft. Near the center of this regional cone of 

depression, water levels showed little change from 1998, as 

withdrawals from both the Upper and Lower aquifers in central Camden were reduced. 

Near the outcrop in and around Camden, New Jersey, 

rises in water levels of 4 to 6 ft resulted from decreased withdrawals in the area, particularly those from the Lower aquifer. The water level at the localized cone near Mount Holly, 

Burlington County, was 5 ft higher (well 05-634) than in 1998 

and, further to the east, in the vicinity of Browns Mills and 

New Egypt, water levels rose 7 (well 05-330) to 14 ft (well 

05-388). During this period, withdrawals from the Middle 

aquifer near Browns Mills and New Egypt decreased by more 

than 30 percent. Water levels in this area had declined from 

1978 through 1993 and were generally at their lowest during 

1993; during the succeeding decade water levels recovered to 

levels observed in 1978. 

Near the southeastern edge of this central segment near 

Buena in western Atlantic County, water levels increased 

by 5 ft (well 01-1221, freshwater equivalent) since the 1998 

study. In eastern Cumberland County, far from areas of withdrawal, the water-level rise since 1998 was less than 5 ft (well 

11-137).

Within the southwestern segment water levels declined 

8 ft (well 33-119) and 10 ft (well 33-934) at the localized 

cones along the Delaware River in Pennsville and on Artificial 

Island, but at the potentiometric high in the central part of 

the county, water levels rose slightly. South of Wilmington, 

Delaware, and along the Delaware River, water levels near 

the outcrop area of the aquifer declined 2 ft to 3 ft from 1998 

to 2003. South of the Chesapeake and Delaware Canal, water 

levels within the cone of depression were generally 1 to 7 ft 

lower than in 1998. Elsewhere, water levels within the aquifer 

in Delaware generally were stable.

Water-level changes from 1988 to 2003 are depicted in 

figure 25d. Water-level rises of at least 10 ft occurred across 

large parts of Middlesex, Monmouth, Ocean, Burlington, 

Camden, and Gloucester Counties. Water levels recovered 20 

ft or more in a 116 mi2 area along the border of Monmouth and 

Ocean Counties and in a large (180 mi2) area along the border 

of Monmouth and Middlesex Counties. The most pronounced 

rises occurred in areas near the Raritan Bay, where recoveries of more than 80 ft were observed. In southern New Jersey, 

water levels recovered from 20 to 35 ft in a 42 mi2 area of 

north-central Camden County, but most of the recovery ranged 

from 10 to 20 ft. Elsewhere across the aquifer, water levels did 

not substantially change.

In the northern part of the Coastal Plain a downward 

hydraulic gradient is present from the Upper PRM aquifer 

to the Middle PRM aquifer in the western part of the aquifer 

along cross section A-A' (fig. 2a). In nearshore areas, the 

hydraulic gradient is upward from the undifferentiated PRM 

aquifer to the Upper PRM aquifer. Near the Delaware River in 

northern Camden County, a slight downward hydraulic gradient from the Upper to the Middle aquifer is present along cross 

section B-B' (fig. 2b). The potential for downward flow from 

the Middle aquifer to the Lower aquifer also exists in this area. 

In downdip areas, the potential for vertical flow is upward 

from the Lower aquifer to the Middle aquifer and from the 

Middle aquifer into the Upper PRM aquifer.

Water-level hydrographs for 10 wells screened in the 

Middle aquifer and the undifferentiated portion of the PRM 

system in the northern counties of New Jersey are shown in 

figure 39. Observation wells 23-291, 23-229 and 23-273 are 

located in or near the aquifer outcrop area in southwestern 

Middlesex County (pl. 8). The hydrograph for well 23-273 

shows near constant water levels for the entire period of 

record. Wells 23-291 and 23-229 are located downdip from 

the outcrop area and in close proximity to one another, and the 

hydrographs show similar trends. Water levels in both wells 

declined 8 ft and 7 ft, respectively, from the 1978 to the 1983 

study, generally were stable from 1983 to 1988, then recovered from 1988 to 1998. Water levels in well 23-291 remained 

about the same from 1998 to 2003; however, water levels in 

23-229 declined by 3 ft during the same period. Observation 

well 23-97 is located about 2 mi from the aquifer outcrop in 

central Middlesex County (pl. 8). Water levels in well 23-97 

declined from 1980 to 1982 when a nearby production well 

screened in the Middle aquifer was active. From 1982 to 1983, 

water levels in well 23-97 rose 12 ft and remained stable 

through 1988. The frequency of measurement in this well was 

reduced to once during every 5-year cycle; however, the water 

level rose approximately 20 ft from 1988 to 1998 in response 

to reduced withdrawals in nearby wells screened in the Upper 

PRM aquifer. The water level altitude measured in 2003 was 

9 ft lower than that in 1998. Observation well 23-482 is 

located north of the Raritan River near the Fall Line, in an 

area distant from any substantial withdrawals (pl. 8). The 

hydrograph for this well shows seasonally fluctuating water 

levels in the early 1980s during which nearby industrial 

wells were most active. From 1978 to 1983, the water level 

rose approximately 12 ft to an altitude of 9 ft in response to 

reductions in withdrawals. From 1983 to 2003, the water level 

in this well has remained nearly constant. Observation well 

23-439 is located at the edge of the outcrop in central Middlesex County within the area affected by the northern segment 

of the regional cone of depression. By 1978, the water level 

in this well had declined to nearly 40 ft below NGVD 29. 

Despite seasonal fluctuations of approximately 10 ft to 12 ft, 

annual high water levels remained stable from 1978 to 1982. 

From 1983 to 1984, the water level in this well rose 10 ft but 

declined again slightly from 1984 to 1988 as withdrawals at a 

nearby pumping center increased. From 1990 to 1996, water 
52 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

levels recovered by nearly 40 ft owing to a reduction in withdrawals in nearby wells by approximately 50 percent. Slightly 

increasing withdrawals from 1998 to 2003 at the nearby production center once again caused the water level to decline.

The hydrograph for well 25-272, located in northwestern 

Monmouth County also within the northern segment of the 

regional cone, displays a water-level trend similar to that for 

well 23-439. Seasonal fluctuations in this well were greater, 

however, ranging from 10 ft to 15 ft during the early part 

of the period of record and increasing to nearly 40 ft during 

the latter, as a result of its location away from the aquifer 

outcrop area where the effects of withdrawals can be moderated. A dramatic rise in water level at this well was observed 

from 1990 to 1996; water levels recovered approximately 60 

ft during this period. This rise corresponds proportionately 

to large-scale reductions in ground-water withdrawals at 

nearby production wells. By 1997, ground-water withdrawals 

had again increased, and the water level has since declined 

approximately 20 ft.

Observation wells 29-19, 25-635 and 29-85 are screened 

in the undifferentiated portion of the PRM aquifer system and 

within the area affected by the north-central segment of the 

regional cone of depression (pl. 8). The hydrographs for these 

wells show trends similar to those observed in wells 25-272 

and 23-439, although responses to withdrawals and recovery 

are more subdued in the far downdip portion of the aquifer. 

Water levels declined from 1978 to 1989 and recovered from 

1989 to 1998; subsequent to 1998, water levels again declined 

slightly.

Water-level hydrographs for 10 wells screened in the 

Middle and undifferentiated parts of the PRM system in the 

southern counties of New Jersey are shown in figure 40. All 

water levels for the period of record in each of the observation 

wells were below 0 ft NGVD 29. Water levels were highest at 

observation wells 05-63 and 15-713, located near the outcrop 

area in Burlington and Gloucester Counties, respectively. 

Water levels in well 15-713, located near the center of the 

Bridgeport quadrangle, fluctuated seasonally by 3 ft to 

5 ft; however, no substantial long-term change was evident 

for the period of record. Several industrial and production 

wells located 1.6 mi to the north withdraw substantial amounts 

of water from the outcrop area of the aquifer; however, the 

effects of these withdrawals on the water level in well 15-713 

are somewhat mitigated owing to the proximity of the well 

to recharge. The hydrograph for well 05-63 shows gently 

declining water levels from 1978 to 1992, followed by a slow 

recovery from 1993 to 2003. By 2003, the net change in the 

water level was a decline of less than 1 ft. Water levels in 

observation wells 05-261 and 07-413, located near the center 

of the regional cone of depression, were substantially below 

0 ft NGVD 29 by 1978. Water levels in both wells further 

declined about 15 ft from 1978 to 1995, followed by a sharp 

rise during 1996 to 1997. Water levels since have stabilized or 

have risen slightly in these areas. Seasonal fluctuations were 

the most pronounced at these two wells, ranging from 4 ft in 

the late 1970s to nearly 24 ft by 1998. Water-level rises of as 

much as 20 ft observed at well 07-413 resulted from CA 2 

restrictions that began in 1996 in order to encourage recovery 

of water levels in this aquifer in southern New Jersey.

Observation well 33-187 is located in north-central Salem 

County near the border with Gloucester, about 1.5 mi west of 

the saltwater front. The nearest production wells are more than 

1 mi distant and are of small capacity; therefore, both longterm and seasonal responses to regional stresses in the aquifer 

are rather subdued. The water level in well 33-187 declined 

about 5 ft from 1978 to 1994, stabilized, then rose during 1997 

to 2002. Water levels measured in 2003 indicate no net change 

from 1978. Observation well 33-251 is located in southern 

Salem County distant from areas of substantial withdrawals. 

Water levels observed in this well declined about 4 ft from 

1978 to 1988; thereafter, water levels were constant through 

2003. Due to the absence of large withdrawals in the vicinity, 

water levels show little seasonal variability.

Observation wells 05-683, 07-476 and 11-137, located in 

southern New Jersey along the downdip limb of the regional 

cone of depression, are screened in the undifferentiated portion of the aquifer. Of the three wells, well 11-137 lies farthest 

from the outcrop area and withdrawals. The hydrograph for 

this well indicates little seasonal effect from withdrawal 

wells, though water levels steadily declined nearly 18 ft 

during the 20-year period from 1978 to 1998. From 1998 to 

2003 water levels rose approximately 2 ft. The hydrograph 

for well 05-683, shows declining water levels from 1978 to 

1988 followed by a steady recovery through 2003. This trend 

is similar to those in observation wells to the north in Ocean 

and Monmouth Counties. Water-level changes in well 07-476 

are similar to water-level changes observed in other wells 

screened in the Middle aquifer in the southern counties.

The hydrographs for two observation wells in Delaware 

and two wells in Maryland show annual and seasonal fluctuations that reflect the response of water levels to ground-water 

withdrawals and recovery (fig. 41). Water levels in well 

Eb23-24, which is screened in the Middle Potomac aquifer of 

Delaware, declined 17 ft during 1980 to 2003. The remaining 

three wells are screened in the Upper Potomac aquifer, which 

coincides with the Middle PRM in New Jersey. Well CE Ce 56 

is located in eastern Maryland, beyond the edge of the regional 

cone of depression. Water levels in this well were relatively 

unchanged during 1983 to 2003. Observation well CE Ee 29 is 

located within but near the southwestern limit of the regional 

cone of depression in eastern Maryland. Water levels in this 

well exhibit a gentle, steady, downward trend during 1983–

2003. Well Dc34-06 is located in the outcrop area adjacent 

to the Delaware River and several large capacity production 

wells. The hydrograph shows variable seasonal water-level 

fluctuations and a general downward trend since the early 

1990s. The water level in this well declined 3 ft during 1998 

to 2003. 
Lower Potomac-Raritan-Magothy Aquifer 53

Lower Potomac-Raritan-Magothy 

Aquifer

The Lower PRM aquifer is the lowermost aquifer within 

the Coastal Plain of New Jersey and Delaware. The aquifer 

does not crop out in New Jersey and is entirely overlain by 

the confining bed separating the Middle and the Lower PRM 

aquifer. The updip limit of the aquifer in New Jersey is within 

the outcrop area of the Potomac and Raritan Formations 

(Zapecza, 1989; Martin, 1998). The aquifer is recognizable 

about 8 mi to 12 mi downdip from the Potomac and Raritan 

Formations (Zapecza, 1989); beyond this limit the aquifer 

cannot be differentiated from the overlying sediments of the 

Middle aquifer. The transmissivity of the aquifer is highest 

in northwestern and central Camden County and adjoining 

areas in Gloucester and Burlington Counties in New Jersey; 

this is where the aquifer is most productive. The Lower PRM 

is continuous into Delaware and coincides with the lower 

part of the Potomac Formation. In Maryland, the equivalent 

aquifer is referred to as the Patuxent aquifer. The updip limit 

of the aquifer in Delaware lies between the western edge of 

the Coastal Plain sediments and the updip limit of the Middle 

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

YEAR

WATER-LEVEL ALTITUDE, IN FEET REFERENCED TO NGVD 29

25-272

70

80

-60

-40

-20

0

60

50

40

30

40

20

10

29-85

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

0

-10

10

-30

-50

25-635

29-19

23-439

23-482

23-97

23-273

23-229

23-291

-20

-10

0

-80

-20

-40

Missing

data Missing

data

Missing

data

Middle aquifer

Undifferentiated aquifer

Middle aquifer

Middle aquifer

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

Figure 39. Water-level hydrographs for observation wells screened in the Middle and undifferentiated Potomac-Raritan-Magothy 

aquifer in the northern counties, New Jersey Coastal Plain, 1978–2003.
54 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

Potomac aquifer; the downdip limit is in northern Kent County 

(Vroblesky and Fleck, 1991).

Water Withdrawals and Extent of Freshwater

Ground-water withdrawals from the Lower PRM aquifer 

in New Jersey were made predominantly from areas adjacent 

to the Delaware River, and most withdrawals (approximately 

70 percent) were made in the greater Camden County area 

(fig. 42). Much of this development occurs in the northwestern 

part of the county flanking the Delaware River; however, production centers are located as far as 11 mi downdip in the central part of the county. Substantial withdrawals also were made 

in Burlington County along the Camden border and near the 

northern limit of the aquifer. In Salem and Gloucester Counties, withdrawals were limited and were made in the extreme 

updip portion of the aquifer owing to the presence of saline 

water in downdip areas. Ground-water withdrawals from the 

aquifer in Delaware are made primarily within or near the 

outcrop area of the Potomac Formation; however, production 

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

YEAR

WATER-LEVEL ALTITUDE, IN FEET REFERENCED TO NGVD 29

07-413

15-713

-40

-30

-10

0

-50

-80

-20

-100

05-683

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

-40

-20

-60

-70

-60

-90

-30

-50

10

-20

-40

-30

-10

11-137

07-476

05-63

05-440

05-261

33-251

33-187

Undifferentiated aquifer

Middle aquifer

Middle aquifer

Figure 40. Water-level hydrographs for observation wells screened in the Middle and undifferentiated Potomac-Raritan-Magothy 

aquifer in the southern counties, New Jersey Coastal Plain, 1978–2003.
Lower Potomac-Raritan-Magothy Aquifer 55

centers are located in downdip areas adjacent to the Delaware 

River (Delaware City) and near Middletown.

Estimated withdrawals in New Jersey from 1978 to 2003 

ranged from 38 to 75 Mgal/d (fig. 43). Withdrawals from 

the Lower PRM aquifer peaked in the early and mid-1980s; 

thereafter, withdrawals generally decreased until 2000, and 

remained constant at approximately 38 Mgal/d during 

2000–03. Withdrawal patterns in Camden and Gloucester 

Counties followed a similar trend; however, withdrawals from 

Burlington County generally increased from 1978 through 

1990, where they remained constant throughout the ensuing 

decade. From 2000 to 2003 withdrawals decreased. In Salem 

County, withdrawals from the aquifer were nearly constant 

at approximately 1 Mgal/d from 1978 to 2003. Withdrawals 

from the aquifer in Delaware ranged from approximately 3.5 

to more than 8 Mgal/d during 1978–2001(fig. 44). Lacombe 

and Rosman (2001) previously reported that withdrawals were 

nearly constant at 5 to 6 Mgal/d during 1978–97. 

The extent of freshwater within the Lower PRM aquifer is shown in plate 9. The position of the saltwater front is 

based on available water-quality data and previously published 

250-mg/L isochlors of Gill and Farlekas (1976) and Lacombe 

and Rosman (2001). The western boundary of the saltwater 

front has been expanded subsequent to 1998 to closely follow 

that of Gill and Farlekas (1976) and to incorporate sites having 

consistently elevated chloride concentrations (greater than 400 

mg/L) in the Middle aquifer in western Salem County. The 

250-mg/L isochlor is not represented for Delaware; its position 

is likely at or updip from that shown for the Middle aquifer 

(pl. 8). 

Water Levels

Water-level data collected at 106 wells screened in the 

Lower PRM aquifer (app. 9) were used to define the 2003 

potentiometric surface (pl. 9). Most of these wells are located 

in New Jersey (80) and Delaware (21); three wells were 

included from Pennsylvania and two from Maryland. Simulated water-level contours shown on maps by Martin (1984; 

1998) and Pope and Gordon (1999) were adapted to close the 

contours at the eastern part of the study area.

Missing

data

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

YEAR

WATER-LEVEL ALTITUDE, IN FEET REFERENCED TO NGVD 29

Dc34-06

Eb23-24

-60

10

-30

-20

0

-30

-40

-50

CE Ce 56

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

0

-20

-20

-10

-40

-50

20

-10

Missing

data

CE Ce 29

Maryland

Delaware

Delaware

Figure 41. Water-level hydrographs for observation wells screened in the Middle Potomac-Raritan-Magothy aquifer in Delaware and 

Maryland, 1978 to 2003.
56 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

1 - 99

100 - 199

200 - 299

300 - 399

Greater than 400

Outcrop of the

Potomac and 

Raritan Formation

EXPLANATION

Water withdrawal, in 

million gallons per year

75°30' 75° 74°30' 74°

40°

30'

40°

39°

30'

39°

Base from U.S. Geological Survey digital data, 1:24,000 

Universal Transverse Mercator Projection, Zone 18, NAD 83

0 5 10 20 MILES

0 5 10 20 KILOMETERS

OCEAN

ATLANTIC

BURLINGTON

SALEM

MONMOUTH

CUMBERLAND

HUNTERDON

MIDDLESEX

CAPE MAY

MERCER

SOMERSET

GLOUCESTER

CAMDEN

UNION

MORRIS HUDSON

Dover

Buena

Camden

Avalon

Berlin

Trenton

Matawan

Marlton

Lakewood

Freehold

Red Bank

Cape May

Wildwood

Vineland

New Egypt

Eatontown

Princeton Jamesburg

Keansburg

Millville

Bridgeton

Tuckerton

Hammonton

Glassboro

Lavallette Toms River

Hightstown

Sea Bright

Sayreville

Rio Grande

Ocean City

Brigantine

Manahawkin

Wilmington

Spring Lake

Asbury Park

Long Branch

Beach Haven

Ship Bottom

Browns Mills

Stone Harbor

Margate City

Ventnor City

Mays 

Landing

Forked River

Seaside Park

New Brunswick

Atlantic City

Pleasantville

Medford Lakes

Point Pleasant

East Brunswick

Barnegat Light

Egg Harbor City

Atlantic Highlands

Spring Lake 

Heights

Point Pleasant Beach

Cape May 

Court House

PENNSYLVANIA

DELAWARE

PHILADELPHIA

NEW YORK

NEW 

CASTLE

KENT

A T L A

N T I C

O C E A

N

D E L A W A R E 

B A Y

MARYLAND

KENT

CECIL

QUEEN

ANNES

Fall Line

CAROLINE

R A R I T A N

B A Y

Delaware

River

NEW JERSEY

Figure 42. Location and amount of ground water withdrawn from the Lower Potomac-Raritan-Magothy aquifer, New Jersey, Delaware, 

and Maryland Coastal Plain, 2003.
Lower Potomac-Raritan-Magothy Aquifer 57

Two regional cones of depression, one underlying the 

Camden area in southern New Jersey and the other, New 

Castle County, Delaware, characterize the 2003 potentiometric surface for the Lower PRM aquifer. Aquifer-wide water 

levels typically were at or below 0 ft NGVD 29; those above 

this datum occur only in the updip areas of western Delaware 

and eastern Maryland and adjacent to the western limit in 

Burlington County, New Jersey. Water-level altitudes ranged 

from 5 ft to -73 ft NGVD 29 within the extent of the Lower 

aquifer in southern New Jersey and southeastern Pennsylvania. The highest water levels were measured adjacent to 

the Delaware River along the updip limit of the aquifer; the 

lowest water levels were observed near the center of the 

regional cone of depression in central Camden County. Near 

the center of this cone of depression, water levels declined at 

several wells causing the expansion of the area encompassed 

by the -60 ft contour (fig. 24e; pl. 9). Withdrawals from the 

Lower aquifer within this area increased only marginally since 

1998; withdrawals from the overlying Middle aquifer in this 

area remained constant. Away from the center of the cone, 

water levels typically increased relative to 1998. Recovery 

was greatest in the area of West Deptford, Gloucester County; 

water-level rises in several wells, ranging from 8 ft to 30 ft 

relative to 1998 levels, prompted the contraction of the lobate 

feature of the -40-ft potentiometric contour in this area. Large 

rises in water levels in and around this area were likely the 

result of the combination of substantial reductions in withdrawals from 1998 to 2003 and the lack of withdrawals from 

production wells for a longer duration prior to measurement 

than in the previous study. Water levels near the northern limit 

of the aquifer in Burlington County recovered approximately 

8 ft. Changes throughout the remainder of the aquifer extent 

were more subtle as water levels generally rose from 1 ft to 

7 ft. above 1998 levels. In Pennsylvania along the Delaware 

River, water levels remained the same in one well (P10113) 

and rose 1 and 6 ft in wells P10114 and P10103, respectively, 

during 1998 to 2003 (fig. 24e; app. 9)

Although restrictions in withdrawals from aquifers of 

the PRM system were not required until 1996, a water-level 

change map of the Lower aquifer from 1988 to 2003 is shown 

in figure 25e. Water levels within the regional cone of depression in southern New Jersey recovered, on average, 10 ft to 

20 ft along the northern and southern edges of the cone in Burlington and Gloucester Counties; water levels in north-central 

Camden County recovered from 20 ft to 40 ft during the same 

period. Withdrawals from the aquifer in southern New Jersey 

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

YEAR

0

60

100

WATER WITHDRAWALS, IN

MILLION GALLONS PER DAY

20

40

80

Figure 43. Estimated ground-water withdrawals from the Lower Potomac-Raritan-Magothy aquifer, New Jersey Coastal Plain, 

1978–2003.

No DataNo Data

0

2

4

6

8

10

WATER WITHDRAWALS, IN

MILLION GALLONS PER DAY

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

YEAR

12

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

Figure 44. Estimated ground-water withdrawals from the Lower Potomac-Raritan-Magothy aquifer, Delaware Coastal Plain, 1978–2001.
58 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

in 2003 were reduced by approximately 18 percent from 1996; 

moreover, withdrawals decreased by nearly 48 percent of the 

volume withdrawn in 1988. Within Critical Area 2, withdrawal 

trends were similar. During this same period, ground-water 

withdrawals from the aquifer in Delaware increased; consequently, water levels within the regional cone of depression 

declined by 10 ft to more than 20 ft.

The center of the cone of depression underlying northern New Castle County is located in the Delaware City area 

near the eastern end and to the north of the Chesapeake and 

Delaware Canal. This cone of depression extends toward the 

northeast into Salem County, New Jersey, and to Cecil County, 

Maryland, in the southwest. Martin and Denver (1982) documented the rapid decline of water levels in this area during the 

late 1950s and early 1960s; water levels had declined nearly 

100 ft during this period and, by 1980, had fallen by as much 

as an additional 100 ft to -200 ft NGVD 29. Lacombe and 

Rosman (2001) noted that the shape of this cone had changed 

slightly and that its center had migrated to the east from its 

simulated configuration in October 1980 (Martin, 1984). 

However, the cone of depression is likely centered near large 

refinery wells to the west that were not accessible for measurement in either 1998 or 2003, rather than on much lower capacity production wells adjacent to the Delaware River. Though 

the depth of the cone of depression in 2003 is nearly identical 

to that observed in 1998, its mapped position has been shifted 

slightly to the northwest, encompassing the larger capacity 

industrial wells in this area. The water level in well Ec15-27 

(-178 ft), located near the eastern edge of the center of this 

cone, has remained essentially unchanged from 1998. Well 

Ec15-28, with a water-level altitude of -187 ft, is also located 

near the center of the cone of depression. Measurements were 

not made at this well in previous studies, and therefore, a 

water-level change could not be calculated. Approximately 

3 mi to the southwest, no appreciable change from 1998 was 

observed in the water level at well Ec32-07. Similarly, the 

water level in well 33-330 (-34 ft), located near the northeastern edge of the cone of depression in New Jersey, showed no 

change from 1998. On the southern edge of the cone, however, 

water levels in wells Fb33-25 (-42 ft) and 33-458 (-45 ft) 

declined slightly, about 5 ft and 3 ft, respectively. Groundwater withdrawals from the aquifer near Middletown, Delaware, increased from the early 1990s through 2000; data for 

2001 to 2003 were incomplete or unavailable. At the northern 

edge of this cone the levels in wells Db33-17 (-51 ft) and 

Dc34-05 (-74 ft) were 11 ft and 10 ft lower than observed during the 1998 study. In contrast, water levels were stable to rising toward the updip limit of the aquifer. Water levels in wells 

in the western part of the study area typically had recovered 

since 1998.

A downward vertical gradient from the Middle PRM 

aquifer to the Lower aquifer occurs in the updip portion of the 

aquifer along section B-B' (fig. 2b). This downward hydraulic 

gradient is subtle; water levels within the overlying Middle 

aquifer are generally 2 ft to 4 ft higher than in the Lower 

aquifer. This gradient increases slightly in central Cherry Hill 

Township, Camden County, where water levels in the Middle 

aquifer are as much as 12 ft higher than those in the Lower 

aquifer. In central Camden County, the hydraulic gradient 

reverses, and the potential for flow upward from the Lower 

aquifer to the Middle aquifer increases.

The water-level hydrographs for four observation wells in 

New Jersey show annual and seasonal fluctuations that reflect 

the response of the water levels to ground-water withdrawals 

and recovery (fig. 45). Observation wells 07-412 and 15-671 

are located near the center of the cone of depression in central 

Camden County. The hydrograph for well 07-412 shows a 

water level of -62 ft during late fall 1978, declining water levels during 1978 to 1988, followed by a rapid rise from 1996 to 

1998. From 1998 to 2003, water levels fluctuated from 10 ft to 

15 ft during any given year. No apparent upward or downward 

trend was observed. The hydrograph of well 15-671, which is 

on the western edge of the center of the cone, exhibits a similar pattern; however, moderate rises continued from 1998 to 

2003. Water levels in observation well 05-262 (-47 ft), located 

5 mi to the northeast of the center of the cone, responded similarly, though seasonal fluctuations and periods of decline and 

recovery were less pronounced. Seasonal water-level fluctuations ranged from 5 ft to 21 ft/yr in wells 05-262, 15-671, and 

07-412. Fluctuations were greatest in wells nearest the center 

of the cone and during the period of rapid water-level rise in 

the mid- to late 1990s.

Observation well 15-712 is located in southwestern New 

Jersey adjacent to the saltwater front and away from large 

production centers. Though seasonal fluctuations typically 

ranged from 2 ft to 7 ft, water levels in well 15-712 show no 

distinct upward or downward trend from the beginning of 

record through 1998; from 1999 to 2003 water levels recovered slightly. The stable or increasing water levels observed in 

these wells during 1996 to 2003 are indicative of aquifer-wide 

trends during this period. Further evidence of an upward trend 

is demonstrated by the rise in water levels in the majority (88 

percent) of the wells in the aquifer measured during 2003. The 

sustained upward trends can in large part be attributed to CA 2 

regulations that limit ground-water withdrawals in the aquifer 

in southern New Jersey.

Water-level hydrographs for three wells screened in the 

lower Potomac aquifer in Delaware are shown in figure 46. 

Fluctuating water levels indicate the effects of ground-water 

withdrawals from local production centers and the Delaware 

City well field. Water levels for 2003 in these wells range from 

51 ft (well Db33-17) to 102 ft (well Ec32-07) below NGVD 

29 depending on proximity to the well field. Two of the wells, 

Db33-17 and Dc34-05, are located in the outcrop area of the 

Potomac Formation. Water levels in well Db33-17 generally 

rose from 1990 to 1994, followed by recurrent periods of 

decline and recovery through 2003. The net change in water 

level during the period of record is a rise of about 4 ft. Water 

levels in well Dc34-05 rose sharply (nearly 40 ft) from 1978 to 

1985 and, thereafter, followed a trend similar to that observed 

in well Db33-17. The net change in water level in this well 

from 1978 to 2003 was a rise of about 25 ft. 
Lower Potomac-Raritan-Magothy Aquifer 59

Observation well Ec32-07 is located to the southwest of 

the center of the cone of depression in New Castle County, 

Delaware, within the confined portion of the aquifer. The 

water level in this well shows a pattern dissimilar to those 

of the aforementioned two wells; the hydrograph indicates a 

prevailing downward trend for the period 1978 to 1998. From 

1998 to 2003 the hydrograph shows numerous water-level 

peaks and valleys ranging from 86 to 104 ft below NGVD 29; 

however, during this 5-year period, the water level remained 

about the same. The net decline in water levels for the period 

of record is approximately 20 ft.

Observation wells CE Bf 82 and CE Ce 55 are located in 

Cecil County, Maryland, at the western edge of the study area. 

Water levels in both wells were nearly constant during 1985 to 

1994, declined during 1995, and stabilized before recovering 

somewhat in 2003 (fig. 46).

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

YEAR

WATER-LEVEL ALTITUDE, IN FEET REFERENCED TO NGVD 29

15-712

05-262

15-671

-10

-80

-60

-40

0

-20

-40

-50

-30

-70

07-412

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

-60

-80

-40

-100

-60

Figure 45. Water-level hydrographs for observation wells screened in the Lower Potomac-Raritan-Magothy aquifer, New Jersey 

Coastal Plain, 1978–2003.
60 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

1983

study

1978

study

1988

study

1993

study

1998

study

2003

study

-20 

WATER-LEVEL ALTITUDE, IN FEET REFERENCED TO NGVD 29

-70

-50

0

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

-90

-80

-110

-60

CECe-55

Db33-17

Ec32-07

-40

-10 

Dc34-05 -70

-60

-110

-100

-100

-90

-80

YEAR

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 

20 

10 

CECf-82

WATER WITHDRAWALS, IN

MILLION GALLONS PER DAY

Figure 46. Water-level hydrographs for selected observation wells screened in the Lower Potomac-Raritan-Magothy aquifer, 

Delaware and Maryland Coastal Plain, 1978–2003.
Summary 61

Summary

Ground-water levels measured in 967 wells in New 

Jersey, and parts of Pennsylvania, northern Delaware, and 

northeastern Maryland, during fall 2003 were used to define 

the potentiometric surface of 10 confined aquifers in the 

Coastal Plain of New Jersey and Delaware. Potentiometricsurface maps were prepared for the confined Cohansey aquifer 

of Cape May County, the Rio Grande water-bearing zone, 

the Atlantic City 800-foot sand, the Piney Point aquifer, the 

Vincentown aquifer, and the Englishtown aquifer system in 

New Jersey, as well as for the Wenonah-Mount Laurel aquifer, 

the Upper Potomac-Raritan-Magothy (PRM), the Middle and 

undifferentiated PRM, and the Lower PRM aquifers in New 

Jersey and the equivalent aquifers in Delaware.

From 1978 to 2003, estimated ground-water withdrawals 

from the confined Cohansey aquifer ranged from 4.3 to 

6.9 Mgal/d, with the maximum volume withdrawn in 1982. 

During 2003 withdrawals from the Cohansey aquifer totaled 

4.8 Mgal/d, a decrease of nearly 1 Mgal/d or 15 percent of 

1998 volumes. The 2003 potentiometric surface of the confined Cohansey aquifer shows a cone of depression underlying the southern part of the Cape May peninsula. From 1998 

to 2003 water levels remained constant near the center of the 

cone of depression. To the south, water levels rose in Cape 

May City wells in southern Lower Township as withdrawals 

decreased since 1998. Measurements from wells screened in 

the aquifer in the northern part of Cape May County indicate 

that water levels have not changed substantially from historic 

conditions. The position of the freshwater-saltwater interface has migrated farther inland along the western part of the 

peninsula based on the rapidly increasing chloride concentrations observed in a well near Villas. Chloride concentrations 

in water from wells to the south in lower Cape May have 

remained stable. 

Estimated ground-water withdrawals from the Rio 

Grande water-bearing zone from 1978 to 2003 averaged less 

than 1 Mgal/d; withdrawals in 2003 were approximately 0.6 

Mgal/d. An elongated cone of depression, largely attributable to low water levels within the underlying Atlantic City 

800-foot sand, persists beneath the barrier islands of Cape 

May, Atlantic, and southern Ocean Counties. Water levels at 

the Rio Grande well field have risen by as much as 13 ft from 

1998 to 2003, as a result of a 25-percent reduction in groundwater withdrawals. Elsewhere, little change has occurred in 

the water levels across the aquifer. The location of the saltwater front within the Rio Grande water-bearing zone has not 

changed from that represented in the previous study; limited 

data compiled following the 1998 study do not indicate movement of the front.

The Atlantic City 800-foot sand is the principal confined 

aquifer supplying water to New Jersey’s barrier island communities from Harvey Cedars in southern Ocean County to 

Cape May City. Ground-water withdrawals from the Atlantic 

City 800-foot sand ranged from 18 to 24 Mgal/d during 1978 

to 2003. Withdrawals have gradually increased since 1978 

and in 2003, were estimated to be approximately 24 Mgal/d. 

An elongated cone of depression underlies the coastal barrier island communities of New Jersey from Barnegat Light 

in Ocean County south to Cape May City, with the deepest 

water levels observed in eastern Atlantic County. From 1998 

to 2003, water levels recovered by as much as 10 ft near 

the center of the cone of depression underlying Ventnor and 

Atlantic City. To the north and west, modest recoveries were 

observed in Egg Harbor Township. Water-level changes from 

1998 to 2003 in the aquifer were greatest in southern Cape 

May County. Withdrawals at the Cape May desalination wells 

began in 1998, and by 2003, were estimated to be approximately 1 Mgal/d. Consequently, water levels at and near these 

wells were as much as 32 ft lower than in 1998. Elsewhere, 

water levels remained stable or have recovered throughout the 

remainder of the aquifer extent. In the Atlantic City 800-foot 

sand, the freshwater-saltwater interface (saltwater front) has 

not changed position from that in 1998. The saltwater front is 

located approximately 4 mi to the south-southeast of production wells at Stone Harbor, where chloride concentrations had 

remained largely consistent, typically ranging from 30 mg/L 

to 40 mg/L from the mid-1960s through 2000. Farther to the 

north and offshore from Atlantic County, the saltwater front 

is located approximately 10 mi and 8 mi to the southeast of 

production wells in Ventnor City and Brigantine, respectively. 

Chloride concentrations in ground water sampled from coastal 

areas of Atlantic and Ocean Counties have not shown substantial change from 1998 to 2003, and chloride concentrations 

in samples from wells south of the front in lower Cape May 

County also have remained stable. 

Ground-water withdrawals from the Piney Point aquifer 

in New Jersey ranged from 1.8 to 4.8 Mgal/d during 1978 to 

2003; in 2003 withdrawals totaled 4.8 Mgal/d, an increase 

of 11 percent from 1998 volumes. Withdrawals in Delaware 

decreased from about 4 to 3 Mgal/d during 1994 to 2001. As 

a result of ground-water withdrawals, five regional cones of 

depression are present in the aquifer and are centered beneath, 

from north to south, in New Jersey, Seaside Park, Barnegat 

Light, coastal Atlantic County, and Buena Borough in western 

Atlantic County and Dover in Delaware. The highest water 

levels in 2003 were measured in wells near the updip boundary along the border between Burlington and Ocean Counties 

and the lowest (-160 ft NGVD 29), near Dover, Delaware. 

From 1998 to 2003 substantial rises in water levels were 

observed in and around Seaside Heights in coastal Ocean 

County. Recoveries in excess of 40 ft resulted from an overall 

reduction in withdrawals from the aquifer in this area. Similarly, water levels increased by as much as 34 ft in and around 

the major cone of depression underlying Dover. Water levels 

also recovered in eastern Buena Borough, but to the southwest, where local withdrawals had shifted, they declined 

slightly from 1998 to 2003. Elsewhere across the aquifer, 

water levels did not change appreciably. The position of the 

saltwater front did not change from 1998 to 2003.
62 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

Ground-water withdrawals from the Vincentown 

aquifer ranged from less than 1 Mgal/d to 1.5 Mgal/d during 

1978-2003. During 2003, an estimated 1.2 Mgal/d of ground 

water was withdrawn from the aquifer. The 2003 potentiometric surface shows a configuration similar to that of the 1998 

study. Water levels stabilized or recovered by 2 ft to 

6 ft from 1998 in most of the wells measured, the exceptions 

being those near Adelphia in Monmouth County, where water 

levels rose by as much as 18 ft. The 250-mg/L isochlor was 

not determined for the Vincentown aquifer; chloride concentrations in ground-water samples from the confined part of the 

aquifer are typically 45 mg/L or lower.

Ground-water withdrawals from the Wenonah-Mount 

Laurel aquifer ranged from 4.1 to 8.7 Mgal/d during 1978–

2003. In 2003, withdrawals were estimated to be nearly 8 

Mgal/d. Withdrawals in the northern counties of the Coastal 

Plain decreased from about 1.4 Mgal/d in 1978 to 0.6 Mgal/d 

in 2003, whereas those in the southern Coastal Plain increased 

from 4.4 to 7.2 Mgal/d. In late 2003, the potentiometric 

surface of the Wenonah-Mount Laurel aquifer was characterized by three cones of depression; the first and most extensive, 

underlies coastal Monmouth County, New Jersey, the second 

and smallest, is centered beneath Browns Mills, and the third, 

underlies parts of central Burlington, Camden, and Gloucester 

Counties. Minimum water levels in 2003 in the cones were 

-76 ft, -32 ft, and -71 ft, respectively. From 1998 to 2003, 

water levels near the center of the large cone of depression that 

extends from Monmouth to Ocean County rose by as much as 

20 ft in the Wenonah-Mount Laurel aquifer. Water levels generally recovered in Burlington, Camden, and Gloucester Counties from 1998 to 2003; the most pronounced rises of nearly 

30 ft occurred in central Gloucester County. Chloride concentrations in ground water did not substantially increase, and 

therefore, no movement of the saltwater front was observed. 

 Ground-water withdrawals from the Englishtown aquifer 

system decreased from approximately 11 Mgal/d in 1978 

to less than 7 Mgal/d by 1996; in 2003 withdrawals were 

estimated to be approximately 8 Mgal/d, with those from the 

northern Coastal Plain counties accounting for 70 percent of 

this volume. Withdrawals from the aquifer system in the northern counties have remained largely constant at about 

5.5 Mgal/d since 1993, whereas those in the southern counties increased substantially following 1996, partly a consequence of restrictions placed on withdrawals from the deeper 

Potomac-Raritan-Magothy aquifer system. The dominant 

feature of the 2003 potentiometric surface in the Englishtown 

aquifer system continues to be the prominent cone of depression underlying northeastern Ocean and eastern Monmouth 

Counties, New Jersey. The minimum water level in 2003, 

-115 ft NGVD 29, measured at Point Pleasant, New Jersey, 

shifted the center of the cone slightly to the north and west 

from its previous position beneath Bay Head. In and around 

the Borough of Spring Lake in coastal Monmouth County, 

water levels declined as much as 13 ft relative to 1998 levels. 

From 1998 to 2003 ground-water withdrawals increased 

substantially in this area; moreover, withdrawals from the 

Englishtown aquifer system had increased slightly throughout 

Critical Area 1 during this same period. Other minor, scattered 

declines and recoveries were observed in Ocean and Camden 

Counties; these were generally confined to a single well or 

well field. Concentrations of dissolved chloride in wells within 

the confined part of the Englishtown aquifer system occasionally exceeded 25 mg/L along coastal Monmouth County; however, concentrations in most water-quality samples were less 

than 25 mg/L, verifying that the aquifer contains freshwater in 

coastal New Jersey.

Total ground-water withdrawals from the Upper 

Potomac-Raritan-Magothy aquifer in New Jersey ranged from 

52 to 80 Mgal/d from 1978 to 2003; during 2003, withdrawals 

were at a 25-year low of approximately 52 Mgal/d. Withdrawals from the northern Coastal Plain decreased from 47 Mgal/d 

in 1983 to about 30 Mgal/d in 2003 as a result of Critical 

Area 1 reductions. Withdrawals in the southern Coastal Plain 

remained fairly constant (30 to 32 Mgal/d) from 1978 through 

1995; thereafter, in 1996 withdrawals decreased to 27 Mgal/d. 

Critical Area 2 restrictions on withdrawals from the Upper 

Potomac-Raritan-Magothy aquifer further reduced these 

amounts and, from 1997 to 2003, withdrawals ranged from 22 

to 25 Mgal/d. Estimated water withdrawals from the Upper 

PRM aquifer (Magothy aquifer) in Delaware remained at less 

than 0.75 Mgal/d during 1978 to 2001. 

Within the Upper Potomac-Raritan-Magothy aquifer, a 

regionally extensive cone of depression persists that extends 

from the Raritan Bay in the northern part of the study area 

into northeastern Maryland. The lowest water levels, -90 

ft NGVD 29, were measured in Central Camden County, 

New Jersey, where during 1998 to 2003 water levels typically recovered from 5 to 15 ft. Water-level rises of 5 to 10 

ft also were observed in western Burlington and northern 

Gloucester Counties, as well as in scattered areas of Monmouth County from 1998 to 2003. In contrast, declining water 

levels were observed in coastal and interior Ocean County as 

ground-water withdrawals increased in Seaside Heights and 

in communities to the west. Declines were more pronounced 

near Seaside Heights (up to 30 ft) since withdrawals from the 

aquifer began following the 1998 study. Declining water levels 

were also observed in parts of northern Monmouth County, 

central Camden County, and in Middletown, Delaware. Elsewhere, water levels within the aquifer were generally stable.

Concentrations of dissolved chloride in samples from 

several observation wells screened in the Upper PRM (Old 

Bridge) aquifer at Keyport and Union Beach have increased 

substantially since 1998, indicating the landward movement of 

the saltwater front. Although water levels have recovered and 

largely stabilized as a result of the reduction in withdrawals 

subsequent to 1991, water levels continue to fluctuate seasonally; in summer months water levels decline to as much as 

12 ft. below 0 ft NGVD 29. The hydraulic gradient has not 

reversed sufficiently to allow freshening of the aquifer, and 

active saltwater intrusion continues in this area. In southern New Jersey, the position of the saltwater front has been 

updated subsequent to the 1998 study. The saltwater front arcs 
References Cited 63

in an updip direction toward the Delaware River in southern 

Gloucester County. The updated position of this line reflects 

a reinterpretation of previously collected data, as well as the 

inclusion of new data; this new position does not imply movement of the front nor increasing chloride concentrations in this 

area.

Ground-water withdrawals from the undifferentiated 

and Middle Potomac-Raritan-Magothy aquifer in New Jersey 

in 2003 were estimated at 68 Mgal/d. Withdrawals from the 

northern Coastal Plain decreased from 39 Mgal/d in 1983 to 

about 26 Mgal/d in 1996; however, from 1997 to 2003 withdrawals again increased and, by 2003, were estimated at 

31 Mgal/d. In the southern Coastal Plain, withdrawals 

decreased during 1983–98; thereafter, withdrawals increased 

slightly to 37 Mgal/d in 2003. 

As a result of ground-water withdrawals, a regionally 

extensive cone of depression in the Middle Potomac-RaritanMagothy aquifer encompasses much of the study area and 

extends from the Raritan Bay in the northeast to eastern 

Maryland in the southwest. Water-level altitudes ranged from 

highs of more than 70 ft NGVD 29 near the outcrop area in 

central Mercer and Middlesex Counties to -72 ft NGVD 29 at 

the center of the cone of depression in southern New Jersey. In 

New Castle County, Delaware, water levels ranged from 68 ft 

NGVD 29 near the northwestern limit of the aquifer to more 

than 50 ft below NGVD 29 in the Middletown area. Increases 

in withdrawals from 1998 to 2003 caused water levels to 

decline from 5 ft to 9 ft along the border between Monmouth 

and Middlesex County, and within the undifferentiated portion 

of the aquifer in parts of northern Ocean County, water levels 

were 2 to 10 ft lower than in 1998. Similarly, declines in water 

levels of up to 13 ft were observed in Camden County, though 

the declines occurred near individual wells or well fields and 

were limited in extent. Reduced ground-water withdrawals 

near the northern boundary of Critical Area 2 caused water 

levels to rise by as much as 10 ft. Elsewhere, within Critical 

Area 2 and the remainder of southern New Jersey, water levels 

in the Middle aquifer were stable to slightly recovering. Water 

levels in 2003 were 5 to 7 ft lower than in 1998 within the 

aquifer in central New Castle County, Delaware. The extent of 

freshwater in the Middle Potomac-Raritan-Magothy aquifer in 

the northern and southern counties of the New Jersey Coastal 

Plain remained about the same as in 1998.

Total ground-water withdrawals from the Lower Potomac-Raritan-Magothy aquifer in New Jersey ranged from 

38 to 75 Mgal/d during 1978 to 2003. Withdrawal volumes 

peaked in the mid-1980s, decreased from 1985 to 2000; 

thereafter, withdrawals remained nearly constant at 38 Mgal/d. 

In 2003, two regional cones of depression, centered beneath 

the Camden area in southern New Jersey and in New Castle 

County, Delaware, characterized the potentiometric surface of 

the aquifer. Near the center of the Camden cone of depression, 

water levels declined during 1998–2003; however, near the 

western edge of this cone, water levels in many wells recovered, most notably in the West Deptford area. Water levels 

in some wells rose more than 20 ft relative to 1998 levels, 

as a result of local reductions in ground-water withdrawals. 

Elsewhere in New Jersey, water levels in the aquifer remained 

stable or had risen from 1 to 8 ft. Water levels near the center 

of the major cone of depression in Delaware have stabilized 

since 1998. 

Acknowledgments

The authors are grateful to the water purveyors and well 

owners for allowing access to their wells for water-level measurements. The authors wish to thank Nicholas Smith, Donald 

Rice, and Walter Jones of the USGS for their assistance in the 

data collection; Thomas McKenna of the Delaware Geological Survey who oversaw the collection of water-level data in 

Delaware and provided technical comments on specific sections of this manuscript; and Stewart Lovell of the Delaware 

Department of Natural Resources and Environmental Control 

for providing ground-water-withdrawal data for Delaware. The 

authors also thank Judith Wheeler, formerly of the Maryland 

Water Science Center, for providing ground-water-withdrawal 

data for Maryland and Delaware. Critical reviews of the 

manuscript were provided by Daryll Pope and Larry Harrelson 

of the USGS. Finally, the authors thank Diane Zalaskus and 

Michael Bleicher of the New Jersey Department of Environmental Protection for their assistance and direction in designing the study with respect to New Jersey data. 

References Cited

Cushing, E.M., Kantrowitz, I.H., and Taylor, K.R., 1973, 

Water Resources of the Delmarva Peninsula: U.S. Geological Survey Professional Paper 822, 58 p., 12 pls.

Eckel, J.A., and Walker, R.L., 1986, Water levels in major 

artesian aquifers of the New Jersey Coastal Plain, 1983: 

U.S. Geological Survey Water-Resources Investigations 

Report 86–4028, 62 p., 7 pls.

Essaid, H.I., 1990, The computer model SHARP, a quasi three 

dimensional finite-difference model used to simulate freshwater and saltwater flow in layered coastal aquifer systems: 

U.S. Geological Survey Water-Resources Investigations 

Report 90–4130, 181 p.

Gill, H.E.,1962, Ground-water resources of Cape May County, 

New Jersey—Saltwater invasion of principal aquifers: New 

Jersey Department of Conservation and Economic Development, Division of Water Policy and supply Special Report 

18, 171 p.

Gill, H.E., and Farlekas, G.M., 1976, Geohydrologic maps of 

the Potomac-Raritan-Magothy aquifer system in the New 

Jersey Coastal Plain: U.S. Geological Survey Hydrologic 

Investigations Atlas HA–557, 2 sheets, scale 1:500,000.
64 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003

Johnson, M.L., and Charles, E.G., 1997, Hydrology of the 

unconfined aquifer system, Salem River Area: Salem River 

and Raccoon, Oldmans, Alloway, and Stow Creek Basins, 

New Jersey, 1993–94: U.S. Geological Survey WaterResources Investigations Report 96–4195, 5 sheets.

Johnson, M.L., and Watt, M.K., 1996, Hydrology of the 

unconfined aquifer system, Mullica River Basin, New 

Jersey, 1991–92: U.S. Geological Survey Water-Resources 

Investigations Report 94–4234, 6 sheets.

Lacombe, P. J., and Carleton, G.B., 2002, Hydrogeologic 

framework, availability of water supplies, and saltwater 

intrusion, Cape May County, New Jersey: U.S. Geological 

Survey Water-Resources Investigations Report 01–4246, 

151 p

Lacombe, P.J., and Rosman, Robert, 1995, Hydrology of the 

unconfined aquifer system in the upper Maurice River 

Basin and adjacent areas in Gloucester County, New Jersey, 

1986–87: U.S. Geological Survey Water-Resources Investigations Report 92–4128, 3 sheets.

Lacombe, P.J., and Rosman, Robert, 1997, Water levels in, 

extent of freshwater in, and water withdrawals from eight 

major confined aquifers, New Jersey Coastal Plain, 1993: 

U.S. Geological Survey Water-Resources Investigations 

Report 96–4206, 8 pls.

Lacombe, P.J., and Rosman, Robert, 2001, Water levels in, 

extent of freshwater in, and water withdrawals from ten 

major confined aquifers, New Jersey Coastal Plain, 1998: 

U.S. Geological Survey Water-Resources Investigations 

Report 00–4143, 10 pls.

Leahy, P.P., and Martin, Mary, 1993, Geohydrology and simulation of ground-water flow in the Northern Atlantic Coastal 

Plain aquifer system: U.S. Geological Survey Professional 

Paper 1404–K, 81 p.

Martin, Mary, 1984, Simulated ground-water flow in the Potomac aquifers, New Castle County, Delaware: U.S. Geological Survey Water-Resources Investigations Report 84–4007, 

85 p.

Martin, Mary, 1998, Ground-water flow in the New Jersey 

Coastal Plain: U.S. Geological Survey Professional Paper 

1404 H, 146 p.

Martin, Mary, and Denver, J. M., 1982, Hydrologic data for 

the Potomac Formation in New Castle County, Delaware: 

U.S. Geological Survey Water-Resources Investigations 

Open-File Report 81–916, 148 p.

McAuley, S.D., Barringer, J.L., Paulachok, G.N., Clark, J.S., 

and Zapecza, O.S., 2001, Ground-water flow and quality 

in the Atlantic City 800-foot sand, New Jersey: New Jersey 

Geological Survey Report GSR 41, 86 p.

Meisler, Harold, 1989, The occurrence and geochemistry of 

salty ground water in the Northern Atlantic Coastal Plain: 

U.S. Geological Survey Professional Paper 1404 D, 51 p., 

6 pl.

New Jersey Administrative Code, 2004, Safe drinking water 

act regulations: title 7, chapter 10, subchapter 7: Trenton, 

N.J., 83 p.

New Jersey Administrative Code, 2005, New Jersey water 

supply allocation rules: title 7, chapter 19, subchapter 8: 

Trenton, N.J., 82 p.

New Jersey Water Supply Authority, 2005, Annual Report 

of the New Jersey Water Supply Authority, Clinton, 

NJ, accessed June 14, 2007, at URL http://www.njwsa.

org/2005_Annual_ Report.pdf

Nichols, W.D., 1977, Geohydrology of the Englishtown 

formation in the northern Coastal Plain of New Jersey: U.S. 

Geological Survey Water-Resources Investigations Report 

76–123, 62 p.

Owens, J.P., Minard, J.P., Sohl, N.F., and Mello, J. F., 1970, 

Stratigraphy of the outcropping Post-Magothy Upper Cretaceous formations in southern New Jersey and northern Delmarva Peninsula, Delaware, and Maryland: U.S. Geological 

Survey Professional Paper 674, 60 p. 

Pope D.A., and Gordon, A.D., 1999, Simulation of groundwater flow and movement of the freshwater-saltwater 

interface in the New Jersey Coastal Plain: U.S. Geological 

Survey Water-Resources Investigations Report 98–4216, 

159 p.

Rosman, Robert, Lacombe, P.J., and Storck, D.A., 1996, 

Water levels in the major artesian aquifers of the New 

Jersey Coastal Plain, 1988: U.S. Geological Survey WaterResources Investigations Report 95–4060, 74 p., 7 pls.

Schaefer, F.L., 1983, Distribution of chloride concentrations 

in the principal aquifers of the New Jersey Coastal Plain, 

1977–81: U.S. Geological Survey Water-Resources Investigations Report 83–4061, 56 p.

Schaefer, F.L., and Walker, R.L., 1981, Saltwater intrusion into 

the Old Bridge Aquifer in the Keyport-Union Beach Area 

of Monmouth County, New Jersey: U.S. Geological Survey 

Water-Supply Paper 2184, 21 p.

Seaber, P.R., 1965, Variations in chemical character of water 

in the Englishtown Formation, New Jersey: U.S. Geological 

Survey Professional Paper 498–B, 35 p.

Spitz, F.J., Watt, M.K., and dePaul, V.T., 2008, Recovery of 

ground-water levels from 1988 to 2003 and analysis of 

potential water-supply management options in Critical Area 

1, east-central New Jersey: U.S. Geological Survey 

Scientific Investigations Report 2007–5193, 40 p.
References Cited 65

Sugarman, P. J., 1992, Geologic controls on aquifer distribution in the Coastal Plain of New Jersey, in Gohn, G. S., ed., 

Proceedings of the 1988 U.S. Geological Survey workshop 

on the geology and geohydrology of the Atlantic Coastal 

Plain: U.S. Geological Survey Circular 1059, p. 35–38.

Sugarman, P.J., 2001, Hydrostratigraphy of the Kirkwood and 

Cohansey Formations of Miocene Age in Atlantic County 

and vicinity, New Jersey: New Jersey Geological Survey 

Geological Survey Report 40, 26 p.

Todd, D.K., 1980, Groundwater hydrology: New York, John 

Wiley & Sons, 535 p.

U.S Fish and Wildlife Service, 1990, Digital wetlands delineation maps (data base); U.S. Fish and Wildlife Service, St. 

Petersburg, Fla.

U.S. Geological Survey, 1999, National Elevation Dataset 

(NED) 10-meter Digital Elevation Models (DEMs): Eros 

Data Center, Sioux Falls, S.D., scale 1:24,000.

Voronin, L.M., 2004, Documentation of revisions to the 

Regional Aquifer System Analysis model of the New Jersey 

Coastal Plain: U.S. Geological Survey Water-Resources 

Investigations Report 03–4268, 49 p.

Vroblesky, D.A., and Fleck, W. B., 1991, Hydrogeologic 

framework of the Coastal Plain of Maryland, Delaware, and 

District of Columbia: U.S. Geological Survey Professional 

Paper 1404–E, 45 p.

Walker, R.L., 1983, Evaluation of water levels in major aquifers of the New Jersey Coastal Plain, 1978: U.S. Geological 

Survey Water-Resources Investigations Report 82–4077, 

56 p.

Watt, M.K., 2000, A hydrologic primer for New Jersey 

watershed management: U.S. Geological Survey WaterResources Investigations Report 00–4140, 108 p.

Watt, M.K., and Johnson, M.L., 1992, Water resources of the 

unconfined aquifer system of the Great Egg Harbor River 

Basin, New Jersey, 1989–90: U.S. Geological Survey 

Water-Resources Investigations Report 91–4126, 5 pls.

Watt, M.K., Johnson, M.L., and Lacombe, P.J., 1994, Hydrology of the unconfined aquifer system, Toms River, Metedeconk River, and Kettle Creek Basins, New Jersey, 1987–90: 

U.S. Geological Survey Water-Resources Investigations 

Report 93–4110, 5 sheets. 

Watt, M.K., Kane, A.C., Charles, E.G., and Stork, Donald, 

2003, Hydrology of the unconfined aquifer system, Rancocas Creek Area: Rancocas, Crosswicks, Assunpink, Blacks, 

and Crafts Creek Basins, New Jersey, 1996: U.S. Geological 

Survey Water-Resources Investigations Report 02–4280, 

5 pls.

Woodruff, K.D., 1969, The occurrence of saline groundwater 

in Delaware aquifers: Delaware Geological Survey Report 

of Investigations 13, 45 p. 

Zapecza, O.S., 1989, Hydrogeologic framework of the New 

Jersey Coastal Plain: U.S. Geological Survey Professional 

Paper 1404–B, 49 p., 24 pls.

Appendix 1

Water-level data for wells screened in the confined Cohansey aquifer and the Rio Grande 

water-bearing zone, New Jersey Coastal Plain, 1978–2003.
68 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 1. Water-level data for wells screened in the confined Cohansey aquifer and the Rio Grande water-bearing zone, New Jersey Coastal Plain, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longi- tude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water-level change (ft) 2003 measure- ment date Shut- down period 1978 1983 1988 1993 1998 2003 Confined Cohansey aquifer 01-835 35-05072 391820 744534 TUCKAHOE 15 116-126 -- -- -- -- -- 9 -- 12/04

E

09-11 57-04898 385612 745456 CAPE MAY 7.28 281-321 -- -20 -14 -17 -15 -11 4 12/02

E

09-18 -- 385652 745326 CAPE MAY *4 295-325 -- -- -- -- -- -14 -- 12/10

E

09-27 37-00013 385642.7 745532 CAPE MAY 10 277-306 -21 -27 -17 -21 -18 -11 6 12/09

D

09-30 -- 385650 745309 CAPE MAY 11 305-325 -- -- -- -- -14 -13 2 12/10

E

09-36 -- 385701 745527 CAPE MAY 10 174-282 -26 -33 -20 -26 -17 -15 2 12/09

A

09-42 37-00268 385723 745239 CAPE MAY 5 259-289 -- -18 -12 -- -16 -19 -2 12/12

A

09-43 57-00011 385723.2 745519.8 CAPE MAY 18 246-276 -- -25 -13 -21 -16 -8 8 12/09

E

09-48 37-00159 385748 745532 CAPE MAY 17.48 242-252 -- -22 -17 -21 -17 -12 5 12/02

E

09-49 -- 385804 745741 CAPE MAY 6 241-250 -16 -15 -13 -14 -13 -11 2 12/02

E

09-52 37-00113 385853.9 745711 CAPE MAY 18 241-262 -- -15 -16 -22 -19 -14 5 12/09

D

09-54 37-00223 385906.3 745621.7 CAPE MAY 14 212-247 -- -18 -16 -20 -21 -17 4 12/12

A

09-57 37-00293 385916 745519 CAPE MAY 20 263-303 -- -13 -13 -17 -12 -13 -1 12/12

A

09-60 -- 390056 745425 RIO GRANDE 13.11 242-257 -- -12 -12 -15 -12 -13 -1 12/04

E

09-80 -- 390213 745055 STONE HARBOR 13.67 242-252 -2 -2 -4 -5 -4 -2 3 12/04

E

09-89 37-00158 390425 745445 RIO GRANDE 7.37 195-210 -2 -2 -2 -1 -0 -2 -2 12/02

E

09-99 35-00680 390611 744837 STONE HARBOR 10.73 214-230 4 5 4 3 -2 5 7 12/04

E

09-150 37-00155 385607 745555 CAPE MAY 6.6 283-293 -18 -19 -13 -17 -14 -10 4 12/02

E

09-159 37-00241 385827 745020.4 WILDWOOD *2 249-360 -- -8 -8 -11 -8 -6 2 12/10

D

09-187 -- 390218 745608 RIO GRANDE 10 186-190 -- -- -6 -7 -3 -4 -1 12/09

E

09-188 -- 390215 745439 RIO GRANDE 5.5 229-233 -- -- -10 -11 -9 -7 2 12/12

E

09-207 35-06772-1 391121 745113 WOODBINE 10.48 80-90 -- -- -- -- -- 5 -- 12/11

E

09-210 -- 385946 745724 CAPE MAY 11.03 216-221 -- -- -8 -13 -12 -10 2 12/02

E

09-213 -- 390128 745638 RIO GRANDE 12.23 203-208 -- -- -- -8 -7 -5 1 12/10

E

09-219 35-03380 390601 745244 RIO GRANDE 19 150-200 -- -- -- 2 3 5 2 12/12

E

09-233 35-04815 390929 745004 WOODBINE 12 120-170 -- -- -- -- -- 6 -- 12/23

E

09-256 36-01106 391719 744513 TUCKAHOE 25 138-158 -- -- -- -- -- 15 -- 12/10

B
Appendix 1 69

Appendix 1. Water-level data for wells screened in the confined Cohansey aquifer and the Rio Grande water-bearing zone, New Jersey Coastal Plain, 1978–2003.—Continued[--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS 

well 

number 

New 

Jersey 

permit 

number 

Latitude Longi- tude USGS quadrangle 

Altitude 

of land 

surface 

(ft) 

Screened 

interval 

(ft) 

Water-level altitude (ft) 1998-2003 

water-level 

change (ft)

2003 

measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

09-281 37-00254 390710 745133 STONE HARBOR 11 176-181 -- -- 5 5 4 6 2 12/01 E09-292 37-03035 390337 744622 STONE HARBOR 5 251-261 -- -- 1 2 1 0 -1 12/11 E09-297 36-06829 391326 744050.7 SEA ISLE CITY 10 145-180 -- -- -- -- -- 8 -- 12/22 A09-301 37-00831 385736.1 745122.4 WILDWOOD 2 190-245 -- -- -- -- -11 -10 1 12/10 A09-308 35-06359 391213 745332 HEISLERVILLE 12 58-98 -- -- -- -- -- 7 -- 12/03 D09-310 37-01781 390018.5 744747.9 STONE HARBOR 7 279-357 -- -- 1 0 2 3 1 12/10 A09-314 37-00640 385932.7 744849.5 WILDWOOD *7 212-325 -- -- -- -1 0 1 1 12/10 A09-315 35-01373 390317 745009 STONE HARBOR 10 228-248 -- -- -- -- -- 7 -- 12/22 B09-317 35-02729 391421 744839 WOODBINE 42 135-158 -- -- -- -- -- 27 -- 12/23 B09-325 35-13059 391701 745056 TUCKAHOE 55 109-119 -- -- -- -- -- 34 -- 12/11 E09-350 36-16171 391218 744544 WOODBINE 16 227-237 -- -- -- 14 13 15 2 12/09 E09-353 37-04871 385855 745736 CAPE MAY 20 262-272 -- -- -- -12 -12 -8 4 12/02 E09-354 37-04873 390147.7 744856.7 STONE HARBOR 4.67 230-240 -- -- -- 2 2 4 2 12/22 E09-358 37-02274 390356 744954 STONE HARBOR 15 240-270 -- -- -- -- -0 2 2 12/02 D09-366 37-01039 385940 744953 WILDWOOD 5 270-290 -- -- -- -- -3 -2 1 12/10 D09-372 -- 390924 744202 SEA ISLE CITY 5 294-302 -- -- -- -- -- 5 -- 12/22 E09-385 37-00861 390157 745322 RIO GRANDE 15 156-274 -- -- -- -- -14 -10 4 12/10 A09-394 37-00327 385729 745200 WILDWOOD 5 250-275 -- -- -- -- -9 -11 -2 12/09 E09-395 37-04368 385909 745358 CAPE MAY 15 255-275 -- -- -- -17 -15 -15 -0 12/02 D09-402 36-07750 390901 744608 WOODBINE 17 110-120 -- -- -- -- -- 14 -- 12/10 E09-412 36-07565 391319 744116 SEA LSLE CITY 21.62 155-165 -- -- -- -- -- 7 -- 12/22 A09-492 35-16575 390811 744649 WOODBINE 22 105-135 -- -- -- -- -- 7 -- 12/23 E09-520 35-17699 391823 744759 TUCKAHOE 10 95-115 -- -- -- -- -- 15 -- 12/11 E09-525 -- 390004 745444 RIO GRANDE 20 -260 -- -- -- -- -- -22 -- 12/09 A

Rio Grande water-bearing zone

01-219 -- 392647 744041 MAYS LANDING 50 -378 -- -- 31 -- 33 34 1 11/20 E09-67 37-00271 390135 745351 RIO GRANDE 10 461-590 -- -- -- -- -46 -33 13 11/25 A09-71 -- 390138 745347 RIO GRANDE 8 473-523 -- -12 -12 -- -33 -24 9 12/10 E
70 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 1. Water-level data for wells screened in the confined Cohansey aquifer and the Rio Grande water-bearing zone, New Jersey Coastal Plain, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longi- tude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water-level change (ft) 2003 measure- ment date Shut- down period 1978 1983 1988 1993 1998 2003 09-149 37-00005 391815.3 744953 TUCKAHOE 20 250-290 -- 20 18 -- 18 18 -0 12/04

E

09-304 37-03763-3 390002 745409 RIO GRANDE 25 495-505 -- -- -- -- -21 -19 2 12/04

E

09-305 37-00214 390402.7 744706 STONE HARBOR 5 -590 -- -- -- -- -20 -21 -1 12/22

A

09-415 35-01233 391450 745129 WOODBINE 29 -306 -- -- -- -- 6 7 1 12/03

C

09-519 36-22762 391554.2 743916 MARMORA 31 478-498 -- -- -- -- -- -25 -- 12/03

E

09-526 -- 390218 745609 RIO GRANDE 10 578-598 -- -- -- -- -- -18 -- 12/10

E

11-737 35-03449 391237 745712 HEISLERVILLE 10 307-317 -- -- -- -- 2 1 -1 12/02

A

29-775 32-08715 393340.3 742301 NEW GRETNA 5 293-318 -- -8 -6 -- -2 -1 1 12/11

E

29-813 32-11971 393509 742048 TUCKERTON 20 307-337 -- -- -3 -- 1 3 2 12/11

E

29-1621 33-40378 393207 741547 TUCKERTON 5 417-456 -- -- -- -- -- -19 -- 12/12

D

Appendix 2

Water-level data for wells screened in the Atlantic City 800-foot sand, New Jersey 

Coastal Plain, 1978–2003.
Appendix 2 73

Appendix 2. Water-level data for wells screened in the Atlantic City 800-foot sand, New Jersey Coastal Plain, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS 

well 

number

New 

Jersey 

permit 

number

Latitude Longi- tude USGS quadrangle

Altitude 

of land 

surface 

(ft)

Screened 

interval 

(ft)

Water-level altitude (ft) 1998-2003 

water-level 

change (ft)

2003 measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

01-37 56-00071 392151 742458 ATLANTIC CITY 10 782-837 -65 -70 -80 -83 -88 -85 3 11/25 E01-39 56-00012 392329.6 742346 OCEANVILLE 10 733-788 -60 -65 -74 -68 -78 -74 4 11/24 C01-117 32-00477 393212.9 743830.5 EGG HARBOR CITY 40 350-432 23 21 19 20 17 18 1 11/18 B01-180 36-00294 392754 742700 OCEANVILLE 27 560-570 -28 -32 -39 -41 -47 -43 4 11/25 E01-367 56-00038 391859.3 743119.5 OCEAN CITY 10 750-800 -66 -68 -75 -80 -86 -81 5 11/24 B01-578 36-00295 391826 743708 OCEAN CITY 10 670-680 -45 -51 -55 -59 -66 -64 2 11/25 E01-593 36-00372 392030.5 742850.7 ATLANTIC CITY 9 740-790 -- -75 -96 -- -- -87 -- 11/24 B01-600 56-00016 392045.6 742837.8 ATLANTIC CITY 8 750-810 -69 -73 -79 -83 -93 -88 5 11/24 B01-648 36-01084 392125 742603 ATLANTIC CITY 7 775-835 -- -74 -80 -- -- -83 -- 12/02 B01-650 -- 392651 744253 MAYS LANDING *22 -380 -- -- 16 19 16 16 0 11/20 E01-683 36-02091 392411.2 742226.3 BRIGANTINE INLET 8 725-775 -- -- -64 -70 -71 -70 1 11/24 B01-702 -- 392032 743007 OCEAN CITY 5 740-750 -- -- -87 -92 -103 -93 10 11/25 E01-703 36-05092 392639 743231 PLEASANTVILLE 38 560-570 -- -- -45 -46 -58 -47 11 12/19 E01-704 -- 392343 743732 MAYS LANDING 51 596-606 -- -- -38 -37 -49 -50 -1 11/21 E01-706 36-04982-1 392933 743129 PLEASANTVILLE 40 520-530 -- -- -25 -25 -35 -30 5 11/21 E01-889 36-11871 392003.3 743009.8 OCEAN CITY 8 735-795 -- -- -- -86 -94 -87 7 11/24 E01-967 36-13010 392456.1 742120.3 BRIGANTINE INLET 5 702-776 -- -- -- -62 -64 -60 4 11/24 C01-990 36-16110 392308.2 743521 PLEASANTVILLE *30 496-652 -- -- -- -- -55 -50 5 12/04 E01-991 36-16204 392509.2 743412.1 PLEASANTVILLE 63 492-642 -- -- -- -- -55 -48 7 12/03 E01-1218 36-17655 392620 743739 MAYS LANDING *67 520-610 -- -- -- -- -48 -47 1 11/20 E01-1220 36-17339 392647 743659 PLEASANTVILLE 65 552-603 -- -- -- -- -51 -49 2 11/20 B01-1252 32-20165 393211.9 743826 EGG HARBOR CITY 41 337-441 -- -- -- -- -- 16 -- 11/18 B01-1253 36-16750 392749.8 743240.3 PLEASANTVILLE 55 344-598 -- -- -- -- -43 -36 7 12/04 B01-1256 36-17667 391932.6 743054.2 OCEAN CITY 6 649-796 -- -- -- -- -- -94 -- 11/24 B01-1455 36-25420 392749 744259 MAYS LANDING 22 396-436 -- -- -- -- -- 17 -- 11/20 E01-1456 36-21156 392450 743028 PLEASANTVILLE 5 602-652 -- -- -- -- -- -64 -- 11/21 B09-2 37-00280 390420.9 744435 AVALON 5 821-861 -36 -40 -46 -44 -49 -50 -1 12/03 C09-4 37-00265 390526.9 744340.5 AVALON 10 880-920 -40 -42 -40 -43 -51 -48 3 12/02 D
74 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 2. Water-level data for wells screened in the Atlantic City 800-foot sand, New Jersey Coastal Plain, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longi- tude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water-level change (ft) 2003 mea- surement date Shut- down period 1978 1983 1988 1993 1998 2003 09-79 -- 390210 744729 STONE HARBOR 2 833-876 -- -- -- -36 -46 -41 5 12/11

E

09-92 37-00240 390524.7 744855 STONE HARBOR 17 681-791 -32 -31 -34 -38 -41 -42 -1 12/03

C

09-106 56-00006 391342.9 743753.4 SEA ISLE CITY 8 760-810 -46 -46 -51 -54 -62 -61 1 12/03

C

09-108 36-00412 391459.1 743644 SEA ISLE CITY 7 774-840 -- -57 -58 -88 -70 -67 3 12/03

C

09-109 56-00008 391535.9 743609.4 OCEAN CITY 8 749-809 -49 -56 -57 -69 -65 4 12/03

E

09-116 56-00007 391637.7 743449.4 OCEAN CITY 7 760-810 -- -62 -64 -74 -75 -74 1 12/04

E

09-125 36-00314 391728 743351.2 OCEAN CITY 10 -800 -- -- -66 -76 -87 -73 14 12/03

E

09-127 37-00064 390848.5 744157.8 SEA ISLE CITY 7 742-830 -38 -44 -44 -45 -54 -48 6 12/10

E

09-135 37-00009 390323 744524 STONE HARBOR 9 838-878 -30 -34 -31 -38 -43 -40 3 12/22

D

09-136 56-00147 391152 743925.7 SEA ISLE CITY 7 802-834 -- -45 -45 -47 -54 -54 0 12/02

C

09-144 36-00451 391721.3 743805 MARMORA 9 650-690 -47 -54 -50 -60 -70 -66 4 12/04

B

09-161 -- 390705.4 744748 STONE HARBOR 16 639-654 -- -26 -32 -35 -38 -37 1 12/22

B

09-185 37-01340-8 391621.4 744354.5 MARMORA 15 640-650 -- -- -35 -- -41 -41 0 12/04

E

09-291 36-09846 390630 744251.8 AVALON 7 764-941 -- -- -- -45 -49 -49 0 12/02

C

09-296 35-06073 390500 744941.7 STONE HARBOR 20 682-812 -- -- -27 -33 -35 -36 -1 12/02

C

09-302 37-03628-9 385709 745127 WILDWOOD 5 883-893 -- -- -- -14 -18 -27 -9 12/04

E

09-306 35-09239 390422 745446 RIO GRANDE 6 656-666 -- -- -- -17 -19 -22 -3 12/02

E

09-311 36-10378 390748.9 744243.3 SEA ISLE CITY 8 732-896 -- -- -- -46 -50 -48 2 12/10

B

09-337 37-04660 390012 744719 STONE HARBOR 10 910-960 -- -- -- -20 -24 -28 -4 12/04

E

09-359 36-07286 390656.1 744458.3 AVALON 5 708-773 -- -- -- -46 -52 -50 2 12/09

B

09-423 37-05244 390136.4 745235.7 RIO GRANDE 20 825-875 -- -- -- -19 -21 -23 -2 12/23

E

09-459 36-00377 391712.9 743722.6 OCEAN CITY 7 -620 -- -- -- -- -67 -66 1 12/04

B

09-461 36-15182 391729 743812.6 MARMORA 8 639-710 -- -- -- -58 -67 -65 2 12/04

B

09-479 37-06313 385636.2 745527.5 CAPE MAY 7 655-825 -- -- -- -- -17 -37 -20 12/23

E

09-480 37-06314 385643.7 745531.3 CAPE MAY 14 621-820 -- -- -- -- -17 -49 -32 12/09

B

09-481 36-17001 391553.5 743915 MARMORA 33 603-738 -- -- -- -- -- -55 -- 12/03

D

09-482 36-20238 390926 744131.8 SEA ISLE CITY 8 724-884 -- -- -- -- -- -49 -- 12/10

B

09-507 37-06563 385723.1 745520.4 CAPE MAY *18 615-810 -- -- -- -- -- -33 -- 12/09

A
Appendix 2 75

Appendix 2. Water-level data for wells screened in the Atlantic City 800-foot sand, New Jersey Coastal Plain, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS 

well 

number

New 

Jersey 

permit 

number

Latitude Longi- tude USGS quadrangle

Altitude 

of land 

surface 

(ft)

Screened 

interval 

(ft)

Water-level altitude (ft) 1998-2003 

water-level 

change (ft)

2003 measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

09-508 37-06564 385728 745733 CAPE MAY 10 585-765 -- -- -- -- -- -23 -- 12/02 E09-521 37-07541 390302.6 744542.2 STONE HARBOR 10 830-880 -- -- -- -- -- -40 -- 12/22 C29-9 53-00031 393346.7 741431 BEACH HAVEN 5 572-656 -28 -30 -31 -32 -34 -33 1 12/12 C29-111 33-01180 394134 740835 SHIP BOTTOM 9 465-500 -22 -52 -23 -27 -30 -26 4 12/02 B29-112 33-00674 394218.6 740806.4 SHIP BOTTOM 5 451-493 -20 -36 -24 -27 -29 -26 3 12/02 B29-457 33-01275 393509.8 741326.1 BEACH HAVEN 8 551-650 -26 -27 -26 -- -- -43 -- 12/18 D29-557 33-01132 394041.9 741408.1 SHIP BOTTOM 8 385-428 22 16 16 14 13 8 -5 12/11 B29-561 33-01268 393948.2 740953.2 SHIP BOTTOM 10 520-562 -25 -28 -24 -20 -30 -28 2 12/03 B29-597 32-05858 393610.4 742019.7 TUCKERTON 25 400-500 -- -6 -3 -- -- -18 -- 12/10 B29-598 33-00967 394202.2 741207.7 SHIP BOTTOM 2 -- -- -- -21 -25 -26 -26 -0 12/03 E29-814 32-12329 393252.3 742307 NEW GRETNA 10 512-552 -- -- -- -24 -26 -24 2 12/11 C29-936 33-24693 393725.8 741148.8 BEACH HAVEN 9 528-594 -- -- -25 -25 -26 -31 -5 12/18 E29-1063 32-15207 393518.8 742150.7 TUCKERTON *33 475-521 -- -- -24 -25 -27 -28 -1 12/11 C29-1078 33-26875 394137.1 741458.8 SHIP BOTTOM 24 366-429 -- -- -- -- 26 28 2 12/03 E29-1421 32-22507 393536.5 742017.9 TUCKERTON 12 405-511 -- -- -- -- -- -19 -- 12/10 E29-1433 33-41143 394336.3 741610.1 WEST CREEK 58 375-415 -- -- -- -- -- 48 -- 12/03 E29-1624 33-42213 393840 741052 SHIP BOTTOM 5 510-582 -- -- -- -- -- -35 -- 12/02 E29-1729 33-40839 393615.1 741236.8 BEACH HAVEN 6 518-634 -- -- -- -- -- -33 -- 12/18 E

Appendix 3

Water-level data for wells screened in the Piney Point aquifer, New Jersey and Delaware 

Coastal Plain and vicinity, 1978–2003.
78 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 3. Water-level data for wells screened in the Piney Point aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longitude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water- level change (ft) 2003 mea- surement date Shut- down period 1978 1983 1988 1993 1998 2003 01-270 31-03648 393713 744721.5 NEWTONVILLE *93 390-410 -- 33 33 31 22 18 -4 12/12

E

01-700 35-04274 392933 744603 DOROTHY 40 479-539 -- -- 17 12 18 18 0 11/20

E

01-701 35-03992 393148.8 745617 BUENA *120 410-460 -- -- -- -- -- -26 -- 11/13

E

01-713 35-04656 392902 745050 DOROTHY 100 525-535 -- -- -2 -4 -6 -8 -2 11/20

E

01-834 -- 392017 743001 OCEAN CITY 5 970-991 -- -- -28 -30 -32 -34 -2 11/25

E

01-836 35-04559 393149.1 745617.1 BUENA *120 405-455 -- -- -6 -18 -38 -21 17 11/13

B

01-1219 36-16546 392640 743723 PLEASANTVILLE 68 722-742 -- -- -- -14 -16 -18 -2 11/25

E

01-1238 55-00008 393150.9 745551.1 BUENA 108 391-463 -- -- -- -- -31 -17 14 11/18

E

01-1405 36-23678 392748.77 744303.69 MAYS LANDING 23 545-620 -- -- -- -- -- -6 -- 11/20

E

01-1445 35-21013 393041.5 745732.5 BUENA 99 360-540 -- -- -- -- -- -29 -- 11/13

B

05-407 -- 394422 744308 ATSION 47 240-260 52 51 51 51 50 50 -0 10/23

E

05-488 32-00913 393845 743854.5 ATSION *37 419-449 51 50 50 54 48 47 -1 11/18

A

05-676 -- 394914 742545 WOODMANSIE 199 530-540 121 119 118 119 120 118 -2 10/21

E

05-800 32-04454 394732 744525 MEDFORD LAKES 85 200-210 -- 73 72 73 72 73 1 11/18

A

05-1162 32-05879 394636.1 744409.1 INDIAN MILLS 60 215-235 -- -- -- 55 51 55 4 11/24

A

07-572 31-14078 394056.6 745028.3 HAMMONTON *108 304-314 -- 60 55 53 50 51 1 11/19

B

07-980 31-09893 394109 745034 HAMMONTON *102 274-294 -- -- -- -- -- 49 -- 11/19

A

11-44 35-01197 392732 750928 BRIDGETON 82 361-376 17 12 7 0 -5 -7 -2 11/21

E

11-092 -- 391746 751509 BEN DAVIS POINT 5 397-417 -- -28 -37 -44 -44 -46 -2 12/16

C

11-96 34-00852 391829 751207 CEDARVILLE 10 365-375 -15 -20 -28 -34 -34 -34 0 11/21

E

11-138 -- 392514 745216 DOROTHY 85 -574 -- 8 -- -- -- 4 -- 12/19

E

11-163 35-01196 392526 750642 MILLVILLE 80 463-473 22 13 8 2 -4 -11 -7 11/21

E

11-341 34-00991 391936.6 751920.2 BEN DAVIS POINT 4 300-357 -- -35 -44 -49 -50 -50 -0 12/16

E

11-349 34-01463 391654.8 751422.5 CEDARVILLE 5 380-410 -- -28 -35 -42 -42 -44 -2 12/16

B

11-1151 34-01814 391549.8 751231.9 CEDARVILLE 5 466-476 -- -- -- -- -40 -42 -2 12/16

E

11-1220 34-06736 392432.4 751312.1 BRIDGETON 29 235-375 -- -- -- -- -- -22 -- 12/10

E

11-1221 34-06556 392439.3 751238.9 BRIDGETON 36 250-390 -- -- -- -- -- -21 -- 12/10

E

29-2 33-01206 394522 740634 BARNEGAT LIGHT 7 597-654 -- -40 -33 -38 -- -38 -- 12/02

E
Appendix 3 79

Appendix 3. Water-level data for wells screened in the Piney Point aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued[--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS 

well 

number

New 

Jersey 

permit 

number

Latitude Longitude USGS quadrangle

Altitude 

of land 

surface 

(ft)

Screened 

interval 

(ft)

Water-level altitude (ft) 1998-2003 

waterlevel 

change (ft)

2003 measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

29-18 -- 394829 740533 BARNEGAT LIGHT 9 468-474 1 0 -0 -2 -2 -3 -1 10/21 E29-23 33-01494 395422.8 740456.3 SEASIDE PARK 7 490-527 -- -- -- -57 -58 -43 15 12/04 B29-116 53-00020 395641 740852 TOMS RIVER 3 267-293 -- -1 -1 -2 -22 -13 9 10/15 E29-425 -- 395322 742251 WHITING 128 -348 -- -- -- 119 119 118 -1 10/21 E29-537 53-00001 395635.5 740439.1 SEASIDE PARK 4 400-430 -- -35 -30 -35 -58 -17 41 12/04 E29-582 33-04511 395547.8 740432.1 SEASIDE PARK 12 435-485 -- -- -- -51 -- -48 -- 12/04 B29-585 -- 395028 741043 FORKED RIVER 15 412-422 -- 15 15 12 14 14 0 10/29 E29-607 33-07876 394454.3 740653.9 LONG BEACH NE 5 597-662 -- -41 -34 -38 -44 -40 4 12/02 B29-616 53-00005 395527.8 740819.6 TOMS RIVER 7 340-360 -- -6 -12 -- -- -17 -- 10/16 D29-739 33-01247 400044.4 740954.9 LAKEWOOD 20 200-220 -- 13 11 13 8 11 3 10/15 D29-808 33-06595 395607 740444.1 SEASIDE PARK 5 395-475 -- -- -29 -46 -76 -30 46 12/04 D29-935 33-22528 395451 740454.4 SEASIDE PARK *5 474-514 -- -- -- -- -53 -36 17 12/04 D29-1096 33-29653 395357.8 740940.9 TOMS RIVER *32 345-440 -- -- -- -- -1 -9 -8 10/28 B29-1114 29-24912 400046.5 740326 POINT PLEASANT 10 206-276 -- -- -- -- -3 1 4 10/15 E29-1210 36-20855 393115 741909 TUCKERTON 6 860-880 -- -- -- -- -14 -16 -2 10/22 E29-1217 33-29690 395151.6 741105.5 FORKED RIVER *32 468-583 -- -- -- -- -- 17 -- 12/11 E29-1579 33-41928 394345.5 741604.9 WEST CREEK 61 595-645 -- -- -- -- -- 25 -- 12/10 E

Delaware wells

Id55-01 10225 391026 753048 DOVER 20 329-349 -- -- -132 -128 -127 -115 12 12/12 EJc43-06 189531 390702 753724 DOVER 60 330-400 -- -- -- -- -- -78 -- 11/25 DJd14-15 10211 390917 753109 DOVER 21 370-450 -- -- -- -- -155 -121 34 12/03 --Jd25-03 -- 390845 753031 DOVER 20 327-484 -- -- -- -- -130 -117 13 12/03 --Jd34-18 D010208 390729 753157 DOVER 20 330-337 -- -- -- -- -177 -160 17 12/27 --Jd51-06 192655 390521 753449 DOVER 55 355-395 -- -- -- -- -- -93 -- 11/25 DJe12-03 D031640 390920 752858 LITTLE CREEK 22 340-502 -- -- -- -- -123 -114 9 12/06 --Je32-05 10075 390740 752858 DOVER 22 459-561 -- -- -- -- -- -112 -- 11/25 --Je33-01 51796 390746 752731 DOVER 26 450-550 -- -- -- -- -- -111 -- 11/25 --
80 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 3. Water-level data for wells screened in the Piney Point aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longitude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water- level change (ft) 2003 mea- surement date Shut- down period 1978 1983 1988 1993 1998 2003 Kc31-01 Kc31-01 390224 753915 MARYDEL 55 370-380 -- -- -- -- -56 -61 -5 12/12

E

Nc13-03 10223 384935 753658 GREENWOOD 63 620-630 -- -- -- -- -26 -29 -3 11/21

E

Maryland wells

CO Bd 53 C073-0541 390227 754702 GOLDSBORO 60 300-312 30 30 26 22 20 17 -3 12/02

E

CO Dd 47 -- 385217 754905 HOBBS 46 370-380 -21 -22 -27 -29 -31 -35 -4 12/02

E

Appendix 4

Water-level data for wells screened in the Vincentown aquifer, New Jersey Coastal 

Plain, 1978–2003.
Appendix 4 83

Appendix 4. Water-level data for wells screened in the Vincentown aquifer, New Jersey Coastal Plain, 1978–2003.[--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS 

well 

number

New 

Jersey 

permit 

number

Latitude Longi- tude USGS quadrangle

Altitude 

of land 

surface 

(ft)

Screened 

interval 

(ft)

Water-level altitude (ft) 1998-2003 waterlevel 

change (ft)

2003 measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

05-1250 28-20189-2 400148 743519 NEW EGYPT 112 45-55 -- -- -- -- 102 103 1 10/21 E

15-123 31-00216 394253.8 750934 PITMAN WEST 140 121-150 -- -- -- -- 75 77 2 11/13 B15-1005 30-03319 394044.6 751326.3 PITMAN WEST 148 140-156 -- -- 70 -- 62 70 8 11/12 B15-1360 31-42096 394347 750803 PITMAN WEST *120 166-191 -- -- -- -- 78 80 2 11/12 E15-1544 31-32489 394308 750832 PITMAN WEST 138 130-140 -- -- -- -- -- 83 -- 11/25 E25-448 29-04725 401134 740721 ASBURY PARK 125 219-235 -- -- -- -- 70 72 2 11/06 D25-451 29-10756 400903.3 741517.4 ADELPHIA 95 114-174 -- -- 81 -- 67 85 18 11/06 B25-636 29-18404-5 401105 741201 FARMINGDALE 112 85-95 -- -- 59 -- 73 73 -0 10/21 E25-691 29-15843-5 401104 741108 FARMINGDALE 50 5-25 -- -- 43 -- 45 46 1 10/29 E25-702 29-09528 401339.1 740248.1 ASBURY PARK 45 129-140 -- -- -- -- 44 42 -2 11/04 B25-703 29-11712 401317.3 740650 ASBURY PARK 80 167-187 -- -- -- -- 70 70 1 11/04 B25-717 29-28188 401046 742001 ADELPHIA 150 38-43 -- -- -- -- 131 133 2 11/03 E25-788 29-36417 401506.9 740115.1 LONG BRANCH 50 120-166 -- -- -- -- 29 31 2 11/04 D25-789 29-06311 401059 741111 FARMINGDALE 70 -198 -- -- -- -- -- 46 -- 10/29 A25-793 29-24333 401722.1 735920.9 LONG BRANCH 23 70-80 -- -- -- -- -- 14 -- 11/05 E29-139 28-04784 400414 742701 CASSVILLE 136 161-171 -- 129 129 -- 130 130 0 10/20 E29-230 28-05038 400724.4 742340.4 CASSVILLE 150 85-100 -- -- 130 -- 132 133 1 10/31 D29-241 29-07425 400910.8 741538.8 ADELPHIA *82 115-165 -- -- -- -- -- 83 -- 11/03 E29-658 29-08966 400700 741845 LAKEHURST 115 202-215 -- -- 96 -- 94 94 0 10/30 A29-660 28-07193 400853.1 742211.6 ADELPHIA 155 132-138 -- -- -- -- 141 151 10 11/05 E29-698 28-11275 400600.3 742454.3 CASSVILLE *152 120-132 -- -- 141 -- 137 137 0 10/30 B29-916 29-13024 400850 741645 ADELPHIA 125 139-155 -- -- 106 -- 111 110 -1 12/15 E29-917 29-16962 400850 741514.7 ADELPHIA 75 126-186 -- -- 75 -- 63 69 6 11/03 B33-240 -- 393253.6 752422.5 SALEM 7 -140 -- -- -- -- 1 3 2 11/19 E33-292 30-00397 393814 751521 WOODSTOWN 142 190-218 -- -- -- -- -- 43 -- 11/10 A33-368 -- 393253.7 752421.9 SALEM 7 -133 -- -- -- -- 2 3 1 11/19 E

Appendix 5

Water-level data for wells screened in the Wenonah-Mount Laurel aquifer, New Jersey 

and Delaware Coastal Plain, 1978–2003.
86 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 5. Water-level data for wells screened in the Wenonah-Mount Laurel aquifer, New Jersey and Delaware Coastal Plain, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longi- tude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water-level change (ft) 2003 measure- ment date Shut- down period 1978 1983 1988 1993 1998 2003 05-257 51-00156 395514.9 745058.9 MOUNT HOLLY 80 -90 27 25 27 54 50 54 4 11/14

E

05-354 32-00103 395813.5 743948.2 PEMBERTON 62 178-198 40 39 36 40 36 39 3 11/12

B

05-355 52-00004 395826 744107.1 PEMBERTON 81 155-185 39 38 38 41 39 42 3 11/14

B

05-359 32-00539 395725 744114 PEMBERTON 70 181-242 36 35 37 34 37 42 5 11/17

B

05-365 32-00386 395753.1 743454.4 BROWNS MILLS *95 290-330 18 -3 -11 -12 0 6 6 11/10

E

05-366 32-00775 395755 743238 BROWNS MILLS *91 301-323 -41 -47 -60 -49 -35 -31 4 11/10

B

05-427 32-00749 395330.3 744204 PEMBERTON 70 260-348 11 -8 -13 -5 -5 3 8 11/17

E

05-695 32-01240 395328 743719 BROWNS MILLS *102 428-496 24 18 15 9 7 8 1 11/13

E

05-711 31-05707 395128 744738 MEDFORD LAKES 75 260-275 -- -- -- -- -- -12 -- 12/04

B

05-718 32-00361 395736 743035 BROWNS MILLS 95 376-388 -- -- -- -- -8 -4 4 11/05

B

05-720 31-11574 395112 744534 MEDFORD LAKES 125 -410 20 22 -8 0 -15 -15 -0 11/24

A

05-724 32-03118 395414.5 744227.5 PEMBERTON 43 199-275 18 15 6 6 -6 -1 5 11/17

B

05-725 48-00021 400212.9 743708.5 NEW EGYPT 145 142-162 128 126 125 126 125 126 1 11/18

E

05-744 32-00520 395639.3 742950.7 WHITING 100 -456 9 -13 -21 -21 -9 -6 3 10/28

A

05-1004 32-08631 395714 744012.4 PEMBERTON *84 209-254 -- -- 29 36 36 31 -5 11/17

B

05-1082 31-19052 400001.3 744731.1 MOUNT HOLLY *48 82-92 -- -- 22 23 18 24 6 11/14

A

05-1086 32-10112 395753 743705 BROWNS MILLS 55 242-247 -- -- 6 -- 8 12 4 11/14

A

05-1087 32-09937 395333 744440 PEMBERTON 55 227-232 -- -- 11 9 -2 5 7 11/14

B

05-1155 31-39849 395315 744945 MOUNT HOLLY 46 120-180 -- -- -- 31 23 25 2 10/31

E

05-1165 32-00490 395855.9 743519.2 BROWNS MILLS 120 275-307 -- -- -- 6 14 17 3 11/10

A

05-1166 28-17342 400430.5 743352.7 NEW EGYPT 135 119-129 -- -- -- 100 97 100 3 12/10

A

05-1178 32-13264 395540.2 744412.8 PEMBERTON 40 140-180 -- -- -- 30 19 21 2 11/07

D

05-1186 32-15968 395914.8 743305.5 BROWNS MILLS 90 267-358 -- -- -- -27 -6 -1 5 11/10

E

05-1245 52-00082 395450 744509 MOUNT HOLLY 39 -- -- -- -- -- 10 19 9 11/20

E

05-1253 31-46953 394940 744806 MEDFORD LAKES 118 357-417 -- -- -- -- -47 -32 15 11/18

B

05-1387 31-40373 394800 745245 CLEMENTON 119 335-355 -- -- -- -- 2 1 -1 11/07

E

05-1414 31-49988 395052 745117 MEDFORD LAKES 65 199-259 -- -- -- -- -- -12 -- 11/18

B

05-1415 31-50015 395146.5 745101.2 MEDFORD LAKES 50 162-212 -- -- -- -- -- 3 -- 11/18

B
Appendix 5 87

Appendix 5. Water-level data for wells screened in the Wenonah-Mount Laurel aquifer, New Jersey and Delaware Coastal Plain, 1978–2003.—Continued[--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS 

well 

number

New 

Jersey 

permit 

number

Latitude Longi- tude USGS quadrangle

Altitude 

of land 

surface 

(ft)

Screened 

interval 

(ft)

Water-level altitude (ft) 1998-2003 

water-level 

change (ft)

2003 

measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

05-1449 32-12425 395636 744152 PEMBERTON 45 160-198 -- -- -- -- -- 27 -- 11/20 E05-1475 32-18506 395834 743512 BROWNS MILLS 110 276-326 -- -- -- -- 7 12 5 11/17 E05-1491 28-10497 400545 743445 NEW EGYPT 136 206-222 -- -- -- -- 105 108 3 12/05 B05-1495 32-06317 395607.8 742840.8 WHITING *120 512-522 -- -- -- -- 2 5 3 10/28 A07-22 31-00513 394737.6 745611.4 CLEMENTON 147 310-360 34 11 -7 4 3 -1 11/19 D07-118 31-04898 395229 745711 CLEMENTON 158 137-147 69 69 68 68 68 68 0 11/07 E07-308 51-00014 394928.7 750019.3 RUNNEMEDE 77 -126 57 58 56 55 49 50 1 11/12 E07-391 31-05628 394642.2 745752.3 CLEMENTON *168 315-335 36 37 16 2 -14 -9 5 12/19 E07-401 31-02371 394722 745809 CLEMENTON 85 -267 36 43 23 9 -6 -3 3 11/24 B07-414 51-00010 394922.9 745628.9 CLEMENTON 150 237-275 60 52 36 51 58 52 -6 11/12 E07-421 -- 395109 745714 CLEMENTON 175 220-234 91 91 89 89 87 88 1 11/19 B07-449 31-04749 394617.7 745410.7 CLEMENTON 159 420-460 20 19 -4 -- -10 -9 1 11/19 E07-478 -- 394215 745616 WILLIAMSTOWN 111 520-530 36 40 21 3 -25 -29 -4 11/13 E07-513 31-07766 394532 745622 CLEMENTON 166 410-460 -- -- -4 -19 -31 -34 -3 12/25 B07-526 31-06193 394933.5 745852.3 CLEMENTON *85 138-158 70 73 68 69 66 66 -0 12/12 E07-685 31-22273 394513.3 745912.7 WILLIAMSTOWN 144 322-427 -- -- -- -20 -62 -50 12 11/17 B07-847 31-36246 394359 750117 PITMAN EAST 150 329-380 -- -- -- -- -81 -71 10 11/17 B07-993 -- 394522 745626 CLEMENTON 162 394-448 -- -- -- -- -- -33 -- 11/19 B07-1079 -- 394814 750111 RUNNEMEDE 67 120-130 -- -- -- -- -- 51 -- 11/14 B15-367 30-00649 394233.9 751306.5 PITMAN WEST 73 -500 -- 68 66 68 66 70 4 11/12 E15-542 31-16873 394147 750653 PITMAN EAST 150 265-295 -- -- 73 51 25 36 11 11/19 E15-910 30-02454 394152.8 751412.7 PITMAN WEST *108 140-160 -- -- 82 81 78 85 7 11/18 E15-953 31-06570 394718 750603 RUNNEMEDE 81 86-100 -- -- 56 55 54 55 1 11/10 E15-1009 31-22018 394426.8 750630.1 PITMAN EAST 100 149-178 -- -- 65 62 58 62 4 12/22 B15-1040 30-05046 394257 751824 WOODSTOWN 120 77-87 -- -- 77 79 78 81 3 11/10 A15-1060 31-30571 394100.2 750552.9 PITMAN EAST 136 335-386 -- -- -- 20 -47 -23 24 11/19 B15-1104 30-02422-6 394350 751915 WOODSTOWN 102 -40 -- -- -- 81 79 82 3 11/10 E15-1119 31-44252 394338.9 750937.2 PITMAN WEST 141 159-199 -- -- -- -- 68 81 13 11/06 B
88 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 5. Water-level data for wells screened in the Wenonah-Mount Laurel aquifer, New Jersey and Delaware Coastal Plain, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longi- tude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water-level change (ft) 2003 measure- ment date Shut- down period 1978 1983 1988 1993 1998 2003 15-1126 31-34033-4 394119 750626 PITMAN EAST 146 328-338 -- -- -- -- -22 -3 19 11/13

E

15-1203 31-34604 394234 750453 PITMAN EAST 147 298-308 -- -- -- -- -31 -3 29 11/20

E

15-1206 31-39283 394340.1 750940.5 PITMAN WEST 139 195-215 -- -- -- -- -- 82 -- 11/06

E

15-1223 31-33093-2 393912 750517 PITMAN EAST 137 485-495 -- -- -- -- -- -7 -- 11/18

E

15-1349 31-33937 394327 750201 PITMAN EAST 160 680-690 -- -- -- -- -- -63 -- 11/20

E

15-1357 31-25418 394057 750554 PITMAN EAST 137 340-390 -- -- -- -- -- -23 -- 11/19

E

15-1358 31-25672-4 394057 750554 PITMAN EAST 137 355-365 -- -- -- -- -- -21 -- 11/19

E

15-1367 31-45997 394234.3 750457 PITMAN EAST 140 278-342 -- -- -- -- -- -11 -- 11/20

E

15-1384 31-45999 394320.3 750156.3 PITMAN EAST 160 342-382 -- -- -- -- -- -47 -- 11/20

E

15-1452 31-36292 394307.9 750832.3 PITMAN WEST *142 198-258 -- -- -- -- -- 74 -- 11/25

B

15-1517 30-11753 394325.4 751319.5 PITMAN WEST *88 112-132 -- -- -- -- 65 67 2 11/12

E

15-1524 -- 394553 750448 RUNNEMEDE 90 174-225 -- -- -- -- -- 66 -- 11/12

A

15-1547 31-55130 394650.7 750640.2 RUNNEMEDE 84 105-115 -- -- -- -- -- 61 -- 11/25

E

15-1548 31-55132 394656.4 750619.7 RUNNEMEDE 100 115-125 -- -- -- -- -- 66 -- 11/25

E

15-1549 31-54052 394706.5 750553.7 RUNNEMEDE 119 130-150 -- -- -- -- -- 60 -- 11/25

E

15-1550 31-55138 394727.1 750551.8 RUNNEMEDE 122 150-170 -- -- -- -- -- 56 -- 11/25

E

25-14 49-00017 401137.9 740120.4 ASBURY PARK *20 424-504 -153 -170 -210 -91 -85 -67 18 11/05

D

25-88 29-05886 401440.4 741658.4 ADELPHIA 150 143-163 -- -- 114 112 113 113 0 11/06

E

25-95 29-04709 401618 741643 FREEHOLD 162 128-140 -- -- -- 133 134 133 -1 10/22

A

25-166 29-04381 400952.2 741404.1 FARMINGDALE *123 336-396 -- -- -29 21 21 23 2 11/04

E

25-168 29-03105 400957.5 741315.7 FARMINGDALE 160 354-440 -46 -44 -56 -- -2 11 13 12/10

E

25-185 29-02607 401438 741024 FARMINGDALE 119 229-250 59 60 56 65 66 65 -1 12/02

E

25-335 -- 401215 740408 ASBURY PARK 90 465-480 -110 -118 -136 -56 -59 -38 21 11/03

E

25-353 -- 401542 740529 LONG BRANCH 140 321-327 -7 -21 -15 10 15 16 1 10/15

E

25-391 29-07506 400928.7 740210.2 ASBURY PARK 25 485-561 -190 -161 -215 -104 -83 -72 11 11/07

E

25-396 28-06896 400658 743134 NEW EGYPT 122 92-102 85 85 83 86 83 86 3 11/18

E

25-405 -- 401005 742912 ROOSEVELT 158 -124 127 128 126 127 145 147 2 11/14

E

25-412 28-05835 401046.8 742819.4 ROOSEVELT *194 100-140 153 152 151 152 150 150 0 10/30

E
Appendix 5 89

Appendix 5. Water-level data for wells screened in the Wenonah-Mount Laurel aquifer, New Jersey and Delaware Coastal Plain, 1978–2003.—Continued[--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS 

well 

number

New 

Jersey 

permit 

number

Latitude Longi- tude USGS quadrangle

Altitude 

of land 

surface 

(ft)

Screened 

interval 

(ft)

Water-level altitude (ft) 1998-2003 

water-level 

change (ft)

2003 

measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

25-443 29-02871 401053.8 740351.4 ASBURY PARK 75 435-465 -147 -158 -- -- -- -63 -- 10/04 D25-486 -- 400711 740200 POINT PLEASANT 10 604-614 -- -171 -185 -102 -74 -69 5 10/15 E25-521 29-09867 401020 741936 ADELPHIA 150 222-228 -- -- 99 102 103 102 1 11/03 A25-533 29-05113 400816 741333 FARMINGDALE 120 349-365 -- -61 -74 -21 -16 -8 8 10/30 A25-542 -- 400951.3 740727.5 ASBURY PARK *68 430-450 -- -99 -115 -51 -34 -25 9 11/05 C25-637 29-18400-2 401105 741201 FARMINGDALE 112 307-317 -- -- -28 7 16 13 -3 10/21 E25-687 29-15008 401807.8 740250.9 LONG BRANCH *20 177-187 -- -- 1 8 11 11 0 11/03 C25-829 29-36936 400832.4 740942.1 FARMINGDALE 61 395-402 -- -- -- -- -- -32 -- 12/19 B29-31 29-04663 400234.6 740812.4 LAKEWOOD 13 605-625 -117 -124 -133 -120 -73 -59 14 10/23 C29-36 29-06021 400414.1 740912.2 LAKEWOOD 30 518-548 -- -131 -146 -115 -75 -63 12 10/23 C29-37 29-04283 400430.4 740652.7 POINT PLEASANT 20 576-591 -136 -141 -155 -129 -90 -76 14 10/24 E29-49 29-06022 400503.8 740703.8 POINT PLEASANT 29 556-586 -- -135 -149 -122 -82 -69 13 10/23 C29-140 28-04785 400414 742701 CASSVILLE 135 257-267 115 114 112 112 112 112 -0 10/20 E29-227 29-05007 400606.3 741913 LAKEHURST 110 -358 42 38 -- 47 46 39 -7 11/05 A29-234 28-08255 400809 742531 ROOSEVELT 140 180-200 123 130 122 121 121 119 -2 10/29 B29-699 28-07966 400917.4 742330.5 ROOSEVELT 160 214-226 -- 124 121 123 122 118 -4 10/30 B29-713 28-10063 400636 742101 LAKEHURST 130 318-324 -- 83 82 84 84 78 -6 10/31 B29-740 29-08522 400332.3 742117.4 LAKEHURST 105 340-380 -- 41 39 42 52 53 1 12/19 E29-781 29-09069 400622 741956 LAKEHURST 110 302-325 -- -- 40 36 42 59 17 11/06 A29-782 29-09348 400709 741524 LAKEHURST 120 375-381 -- -- -- -- -- -1 -- 11/07 A29-783 29-09681 400746.2 741758.8 ADELPHIA *112 310-325 -- 49 39 39 48 46 -2 10/30 A29-784 29-10449 400550 741807 LAKEHURST 90 341-347 -- -- 2 4 9 6 -3 11/07 A29-786 29-08581 400630 741729 LAKEHURST 110 364-379 -- -0 -3 4 13 9 -4 11/04 E29-926 28-18902 400610 742727 CASSVILLE 105 127-160 -- -- 109 110 110 110 0 10/30 A29-1138 28-23392 400616 743010 NEW EGYPT 95 100-120 -- -- -- -- 96 97 1 12/05 B29-1578 28-41095 400207.2 743031.5 NEW EGYPT 80 218-238 -- -- -- -- -- 62 -- 11/07 E33-2 -- 393202 751629 ALLOWAY 85 462-472 23 22 20 19 14 15 1 11/21 E33-8 30-00030 393329.5 751821.9 ALLOWAY *62 322-345 -- -- 12 10 7 9 2 12/01 B
90 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 5. Water-level data for wells screened in the Wenonah-Mount Laurel aquifer, New Jersey and Delaware Coastal Plain, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longi- tude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water-level change (ft) 2003 measure- ment date Shut- down period 1978 1983 1988 1993 1998 2003 33-20 -- 393534 751751 ALLOWAY 77 -283 33 32 30 28 25 27 2 11/18

E

33-22 31-04612 393533.8 751018.5 ELMER 105 460-500 28 30 27 20 6 14 8 11/21

D

33-50 -- 393535.5 752637.7 SALEM 20 73-97 5 6 4 5 6 7 1 11/17

E

33-56 -- 393606.7 752523.1 SALEM 25 -93 7 7 7 7 7 8 1 11/17

A

33-241 -- 393255.3 752422.6 SALEM 10 -248 6 4 6 5 4 6 2 12/10

E

33-249 50-00042 393342.8 752717 SALEM 5 110-150 0 -2 -5 -- -- -6 -- 11/19

B

33-252 -- 393348 752754 SALEM 3 91-96 1 0 -0 0 -1 1 2 11/20

E

33-381 30-01505 393453 752708 SALEM 10 85-125 -- -0 1 1 -0 1 1 11/17

E

33-384 30-01356 393138 752459.9 SALEM *15 -320 -- 1 -- 0 -1 1 2 11/18

E

33-407 34-01600 393009.3 752600.7 SALEM 5 250-300 -- -- -- -- -7 -2 5 11/17

A

33-456 31-19206 393507.7 751045.9 ELMER 125 443-503 -- 28 27 22 8 9 1 11/21

B

33-664 30-01454 393734 752110 WOODSTOWN 70 123-166 -- -- -- -- 36 38 2 11/06

B

33-886 30-06741 393751.8 751338.7 PITMAN WEST 144 358-378 -- -- -- -- -- 38 -- 11/13

B

33-902 30-09510 393845.3 751903.6 WOODSTOWN 48 100-143 -- -- -- -- 36 38 2 11/06

B

33-904 30-05669 393859.9 751406.9 PITMAN WEST 143 300-310 -- -- -- -- -- 48 -- 12/10

B

33-932 30-05631 393603.9 752527.3 SALEM 30 70-80 -- -- -- -- 9 11 2 11/17

A

33-937 30-08556 393422.7 751704.5 ALLOWAY 102 318-338 -- -- -- -- -- 15 -- 11/20

E

33-938 34-00970 392743.5 753146 TAYLORS BRIDGE 18 270-290 -- -- -- -- 2 3 1 11/21

E

33-973 30-05372 393332 752151 ALLOWAY 39 230-240 -- -- -- -- -- 14 -- 11/20

A

33-974 30-14867 393338 752715 SALEM 5 108-168 -- -- -- -- -- -9 -- 11/19

D

Delaware wells

Ec51-19 82242 393035 753911 ST GEORGE 56 70-80 -- -- -- -- -- 25 -- 12/09 --Fb14-14 110686 392929 754117 MIDDLETOWN 50 122-142 -- -- -- -- 13 14 1 12/29

D

Fc12-16 78984 392958 753840 ST GEORGE 58 100-160 -- -- -- -- -- 19 -- 12/09 --Fc15-05 96840 392910 753534 TAYLORS BRIDGE 5 128-178 -- -- -- -- -- 0 -- 12/23

E

Fc43-04 110612 392642 753747 MIDDLETOWN 52 200-270 -- -- -- -- -- -10 -- 12/23

D

Fc43-05 157829 392641 753747 MIDDLETOWN 52 200-270 -- -- -- -- 3 -11 -14 12/23

E

Fc43-07 185186 392643 753748 MIDDLETOWN 50 195-265 -- -- -- -- -- -10 -- 12/23

D
Appendix 5 91

Appendix 5. Water-level data for wells screened in the Wenonah-Mount Laurel aquifer, New Jersey and Delaware Coastal Plain, 1978–2003.—Continued[--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS 

well 

number

New 

Jersey 

permit 

number

Latitude Longi- tude USGS quadrangle

Altitude 

of land 

surface 

(ft)

Screened 

interval 

(ft)

Water-level altitude (ft) 1998-2003 

water-level 

change (ft)

2003 

measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

Gd33-04 Gd3304 392212 753241 SMYRMA 18 395-427 -- -- -- -- -- -1 -- 12/12 EFc42-35 185232 392644 753848 MIDDLETOWN 35 180-230 -- -- -- -- -- -13 -- 12/09 --

Appendix 6

Water-level data for wells screened in the Englishtown aquifer system, New Jersey 

Coastal Plain, 1978–2003.
94 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 6. Water-level data for wells screened in the Englishtown aquifer system, New Jersey Coastal Plain, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longi- tude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water-level change (ft) 2003 mea- surement date Shut- down period 1978 1983 1988 1993 1998 2003 05-195 31-01164 395833.8 745040.5 MOUNT HOLLY 60 70-74 25 23 22 26 22 22 0 11/13

E

05-197 31-01191 395653 744920 MOUNT HOLLY 41 148-159 26 25 19 26 24 26 2 11/14

A

05-256 31-01399 395514.8 745058.4 MOUNT HOLLY 79 -440 -- -- -- -- 19 20 1 11/14

B

05-259 -- 395524 745024 MOUNT HOLLY 73 253-263 25 20 24 24 20 19 -1 10/31

E

05-375 32-00276 395807 743836 PEMBERTON 70 343-378 19 29 25 20 12 21 9 11/13

E

05-387 32-01103 395943 744119 PEMBERTON 50 208-228 52 54 49 52 49 48 -1 11/13

A

05-437 28-03831 400210 744137 COLUMBUS 74 94-105 62 61 61 66 58 62 4 11/04

B

05-754 -- 395941.4 743246.3 BROWNS MILLS 100 419-447 50 46 43 37 32 31 -1 11/07

B

05-1390 32-21804 395309 743520 BROWNS MILLS 107 615-635 -- -- -- -- 10 11 1 10/23

E

05-1427 27-11807 400052 744743 BRISTOL 55 40-60 -- -- -- -- -- 51 -- 11/05

E

05-1434 28-07339 400015 744429 COLUMBUS *60 -150 -- -- -- -- -- 57 -- 11/04

E

05-1437 28-11130 400652 743432 NEW EGYPT 170 165-245 -- -- -- -- -- 100 -- 11/14

E

05-1492 32-22557 395915 743307 BROWNS MILLS 88 411-451 -- -- -- -- 23 23 -0 11/10

E

05-1493 32-22560 395915.8 743300.9 BROWNS MILLS 100 430-470 -- -- -- -- -- 28 -- 11/10

E

05-1547 32-27283 395706 743329 BROWNS MILLS *91 460-495 -- -- -- -- -- 26 -- 11/06

E

07-166 31-01202 394808.1 745805.8 CLEMENTON 150 367-457 0 47 11 15 13 10 -3 11/24

C

07-529 31-13543 394832 745914 CLEMENTON 55 250-283 1 50 26 3 0 4 4 11/05

B

07-672 31-24779 394928.5 750022 RUNNEMEDE 76 195-215 -- -- 49 46 28 3 -25 11/12

E

07-673 31-24778 394928.6 750022.2 RUNNEMEDE 76 195-215 -- -- 50 -- -- 6 -- 11/12

E

07-731 31-29319 394951.2 745856 CLEMENTON *69 216-236 -- -- -- 52 46 27 -19 10/25

B

15-188 31-02415 394605.4 751055.4 WOODBURY 80 134-160 -- -- 31 31 31 32 1 11/21

B

15-344 30-00064 394518 751639 BRIDGEPORT 80 69-83 -- -- -- -- 67 69 2 12/16

B

15-676 -- 394631.5 751148.5 WOODBURY 28 68-78 -- -- 30 30 30 30 0 12/09

E

23-104 -- 402143 741848 FREEHOLD 77 0-11 -- -- 69 74 70 73 3 10/22

E

23-211 28-07520 401820.1 742245.9 JAMESBURG 105 43-49 90 93 91 -- 95 94 -1 10/22

B

25-16 29-00045 401034 740146.6 ASBURY PARK 20 563-594 -188 -196 -202 -91 -68 -68 0 11/03

E

25-28 29-05292 400623.7 740428.1 POINT PLEASANT 90 770-820 -219 -220 -207 -119 -93 -100 -7 10/30

B
Appendix 6 95

Appendix 6. Water-level data for wells screened in the Englishtown aquifer system, New Jersey Coastal Plain, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS 

well 

number

New 

Jersey 

permit 

number

Latitude Longi- tude USGS quadrangle

Altitude 

of land 

surface 

(ft)

Screened 

interval 

(ft)

Water-level altitude (ft) 1998-2003 

water-level 

change (ft)

2003 measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

25-30 29-00069 400645.2 740343.1 POINT PLEASANT 33 690-750 -233 -249 -225 -116 -91 -100 -9 10/30 D25-46 29-04196 401747 741220 MARLBORO 122 212-232 70 68 61 -- 58 52 -6 11/06 B25-63 29-04386 401147.7 741018.1 FARMINGDALE 75 420-460 -- -- -83 -39 -27 -29 -2 10/31 B25-80 29-05417 401415 741500 ADELPHIA 120 294-334 75 78 73 73 78 75 -3 11/05 E25-96 29-04435 401624 741501 FREEHOLD 200 327-356 87 88 81 74 68 70 2 11/03 B25-107 29-03177 401701.5 741415.6 MARLBORO 163 249-257 81 81 73 70 64 65 1 10/28 B25-132 29-02079 402202 741001 MARLBORO 120 191-221 64 64 63 63 62 62 0 10/29 B25-144 49-00031 402143.2 740956 MARLBORO *104 -154 -- -- 59 -- 57 58 1 10/29 E25-162 29-07043 400815 741042 FARMINGDALE 69 500-560 -114 -120 -125 -66 -48 -51 -3 11/03 E25-165 29-05346 400842 741322.4 FARMINGDALE 135 363-550 -- -- -94 -46 -36 -30 6 11/04 E25-184 29-04186 401429 741253 FARMINGDALE 140 360-380 -- 69 65 69 69 69 -0 12/15 E25-250 29-04437 401918 741528 FREEHOLD 139 185-215 100 99 95 92 90 92 2 10/21 E25-277 29-00030 402231 741432.7 KEYPORT 180 138-152 -- -- -- -- 92 91 -1 10/31 E25-365 29-04513 402046 740103 LONG BRANCH 8 268-333 -- -- -- 6 2 8 6 11/06 D25-374 29-04102 400804.9 740226.4 ASBURY PARK 20 660-710 -205 -218 -216 -113 -91 -94 -3 11/03 E25-385 49-00016 400915.1 740144.2 ASBURY PARK 20 640-705 -197 -208 -210 -106 -100 -112 -12 11/07 E25-389 29-00398 400857.1 740306 ASBURY PARK 60 660-711 -203 -232 -224 -109 -83 -96 -13 11/07 B25-408 28-06655 401007 743200 ALLENTOWN 105 96-119 -- 100 100 99 -- 99 -- 10/29 B25-429 29-04140 400834 740833 FARMINGDALE 98 623-633 -143 149 -149 -78 -58 -66 -8 10/28 E25-441 29-05289 401030 740635.1 ASBURY PARK 120 549-649 -162 -163 -170 -74 -65 -73 -8 11/04 C25-442 49-00032 401052.1 740341.2 ASBURY PARK 70 627-657 -- -177 -- -- -- -67 -- 10/04 D25-638 29-18401-1 401105 741201 FARMINGDALE 112 483-493 -- -- -53 -14 -3 -6 -3 10/21 E25-686 29-15362 401757 740753 MARLBORO 80 320-340 -- -- -- 31 -- 27 -- 10/29 B25-692 29-14852 401804.7 741811.2 FREEHOLD 110 120-150 -- -- 90 85 85 86 1 10/22 A25-697 29-13591 401942.1 740430.8 LONG BRANCH *77 247-277 -- -- 25 28 29 29 0 11/04 E25-704 29-15337 401450 741831 ADELPHIA 195 290-320 -- -- 105 107 107 106 -1 10/31 B25-710 29-16728 400606.5 740909.6 LAKEWOOD 45 594-644 -- -- -164 -96 -70 -71 -1 11/18 E
96 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 6. Water-level data for wells screened in the Englishtown aquifer system, New Jersey Coastal Plain, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longi- tude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water-level change (ft) 2003 mea- surement date Shut- down period 1978 1983 1988 1993 1998 2003 25-714 29-25383 402424.5 740142.9 SANDY HOOK 80 198-248 -- -- -- -- -- 10 -- 10/23

B

25-715 29-25384 402426 740017 SANDY HOOK 229 350-360 -- -- -- 5 4 5 1 10/14

E

25-727 29-24425 401645.2 741735.3 FREEHOLD *112 149-206 -- -- -- -- -- 68 -- 11/03

D

25-733 29-28556 401620 741152 MARLBORO 135 316-366 -- -- -- -- 47 48 1 10/30

E

25-735 29-26191 402103.3 741350 MARLBORO 140 140-191 -- -- -- 33 83 84 1 10/29

B

25-771 29-36217 402350 735837 SANDY HOOK *8.4 258-278 -- -- -- -- -1 2 -- 10/14

E

25-771 Freshwater equivalent water level 4 6 225-782 28-14424 400807 743113 ALLENTOWN 150 215-245 -- -- -- -- -- 104 -- 10/30

C

25-786 29-30436 401801 740813 MARLBORO 87 233-273 -- -- -- -- 32 33 1 10/30

A

25-787 28-36906 401055.1 743133.8 ALLENTOWN 133 90-100 -- -- -- -- 113 114 1 10/26

B

29-5 49-00002 400406.2 740241.3 POINT PLEASANT *4 750-834 -232 -225 -208 -159 -110 -100 10 11/04

C

29-138 -- 400414 742701 CASSVILLE 137 417-427 65 63 60 61 65 65 0 10/20

E

29-236 29-03883 400824 741531.3 ADELPHIA 170 541-577 -- -43 -53 -16 -56 -7 49 11/03

E

29-430 29-05721 400219.5 741154 LAKEWOOD *104 752-817 -- -182 -176 -105 -- -76 -- 11/19

E

29-433 29-05110 400309.1 741118.2 LAKEWOOD 45 673-741 -207 -202 -184 -105 -78 -75 3 11/19

E

29-434 29-04304 400340.1 741315.8 LAKEWOOD *123 697-757 -189 -160 -- -93 -68 -72 -4 11/04

E

29-438 29-04834 400439 741405.4 LAKEWOOD 78 600-758 -152 -170 -161 -112 -79 -90 -11 11/04

B

29-441 29-05068 400505.2 741112.7 LAKEWOOD 30 726-736 -136 -141 -140 -112 -70 -61 9 11/05

E

29-449 29-05496 400614.7 741155.7 LAKEWOOD 55 569-698 -170 -218 -189 -161 -118 -94 24 11/04

E

29-450 29-03324 400623.5 741347.2 LAKEWOOD 70 520-582 -135 -153 -133 -87 -61 -70 -9 11/06

B

29-451 29-02207 400636 741514 LAKEHURST 60 510-530 -102 -108 -103 -64 -52 -54 -2 11/04

E

29-503 29-01325 400210 740308 POINT PLEASANT 5 845-906 -- -194 -194 -133 -98 -94 4 10/15

E

29-518 -- 400401 743159 NEW EGYPT 75 218-238 -- -- 61 62 62 54 -8 11/07

B

29-530 29-04530 400452.8 740413.3 POINT PLEASANT *17 730-790 -236 -211 -202 -146 -99 -102 -3 10/29

E

29-532 49-00075 400458.9 740357.8 POINT PLEASANT 10 748-798 -- -259 -216 -- -- -115 -- 10/24

D

29-534 33-01117 395609 741239 TOMS RIVER 18 1080-1146 -79 86 -86 -85 -66 -54 12 10/29

E

29-938 28-20499 400357.6 742121 LAKEHURST *123 487-527 -- -- -15 0 15 16 1 11/07

B
Appendix 6 97

Appendix 6. Water-level data for wells screened in the Englishtown aquifer system, New Jersey Coastal Plain, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS 

well 

number

New 

Jersey 

permit 

number

Latitude Longi- tude USGS quadrangle

Altitude 

of land 

surface 

(ft)

Screened 

interval 

(ft)

Water-level altitude (ft) 1998-2003 

water-level 

change (ft)

2003 measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

29-1316 29-26316 400440 741937 LAKEHURST 105 512-553 -- -- -- -- 4 2 -2 11/06 E29-1336 28-34164 400429.4 742936.7 CASSVILLE 130 305-355 -- -- -- -- 76 76 -0 10/30 E33-168 30-00029 393940.3 752225.6 PENNS GROVE 40 113-124 -- -- -- -- 17 19 2 12/01 B33-581 30-01467 393931.7 752238.5 PENNS GROVE *22 95-115 -- -- 16 11 -- 15 -- 12/11 A

Appendix 7

Water-level data for wells screened in the Upper Potomac-Raritan-Magothy aquifer, 

New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.
100 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 7. Water-level data for wells screened in the Upper Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longitude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water- level change (ft) 2003 measure- ment date Shut- down period 1978 1983 1988 1993 1998 2003 05-76 31-01751 400320.3 745205.2 BRISTOL 62 59-80 9 8 6 1 1 4 3 12/08

E

05-116 28-02847 400708 743835 COLUMBUS *102 247-253 7 6 3 4 5 -1 -6 11/03

D

05-165 31-05458 395229.9 745416.9 MOORESTOWN *121 464-500 -64 -70 -94 -93 -74 -74 0 11/13

C

05-167 31-07883 395246.5 745150.8 MOUNT HOLLY 46 478-548 -74 -83 -88 -92 -73 -77 -4 11/13

D

05-207 28-03986 400356 744038 COLUMBUS 95 -325 -13 -16 -20 -20 -18 -19 -1 11/05

E

05-209 28-06599 400411.9 744320.7 COLUMBUS 73 259-274 -18 -18 -22 -32 -28 -20 8 11/07

E

05-212 28-03560 400515 744108 COLUMBUS 83 290-310 -13 -15 -18 -18 -17 -21 -4 11/03

E

05-218 -- 400718 744452 COLUMBUS 65 -100 3 1 1 3 2 3 1 11/03

E

05-229 31-08922 395631.8 745856.2 MOORESTOWN 40 160-200 -47 -57 -56 -53 -48 -37 11 12/02

C

05-249 31-05282 395208 745042.1 MEDFORD LAKES 55 523-541 -65 -75 -84 -86 -68 -60 8 12/05

C

05-254 31-10560 395424.3 744855 MOUNT HOLLY 32 451-471 -- -- -- -77 -66 -60 6 11/14

B

05-258 31-04627 395524 745024 MOUNT HOLLY 71 400-410 -52 -65 -66 -69 -59 -54 5 10/31

E

05-317 31-00212 395850 745317 MOORESTOWN 45 192-222 -- -- -45 -46 -46 -32 14 12/16

D

05-438 -- 400218 744603 BRISTOL 41 220-230 -22 -23 -- -- -- -23 -- 11/04

E

05-707 31-14627 395344.2 745502.4 MOORESTOWN 100 405-441 -- -86 -94 -- -71 -67 4 11/17

D

05-728 -- 395819 744340 PEMBERTON 55 485-500 -31 -31 -37 -42 -43 -33 10 11/14

A

05-729 31-00060 395726 745913.5 MOORESTOWN *12 91-121 -- -- -44 -44 -- -33 -- 11/25

E

05-731 -- 400739 744227 TRENTON EAST 93 118-128 5 4 3 3 3 2 -1 10/30

E

05-745 27-05937 400157 744818 BRISTOL 102 260-290 -18 -17 -21 -23 -23 -20 3 11/05

D

05-759 31-16976 395134 744933 MEDFORD LAKES 65 593-672 -- -- -- -- -- -86 -- 12/05

C

05-795 31-09595 395309 745335.7 MOORESTOWN 60 416-463 -79 -96 -97 -97 -76 -74 2 11/13

C

05-820 31-06841 395045.7 745330.3 CLEMENTON *87 545-591 -- -81 -83 -- -- -78 -- 11/13

B

05-1157 28-28845 400312 744332 COLUMBUS 45 251-266 -- -- -- -25 -- -27 -- 11/03

B

05-1159 28-15286 400346.7 744507.2 BRISTOL 50 165-205 -- -- -- -9 -9 -9 0 11/07

A

05-1181 31-41329 395935.7 744649.8 MOUNT HOLLY 19 313-343 -- -- -- -79 -53 -48 5 11/07

A

05-1183 28-28543 400333 744628 BRISTOL 75 200-220 -- -- -- -16 -14 -14 -0 11/04

B

05-1194 31-29146 395549.7 745342.2 MOORESTOWN 80 300-310 -- -- -- -64 -53 -48 5 11/18

B
Appendix 7 101

Appendix 7. Water-level data for wells screened in the Upper Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued[--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS 

well 

number

New 

Jersey 

permit 

number

Latitude Longitude USGS quadrangle

Altitude 

of land 

surface 

(ft)

Screened 

interval 

(ft)

Water-level altitude (ft) 1998-2003 

waterlevel 

change (ft)

2003 

measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

05-1389 32-22005 395309 743520 BROWNS MILLS 107 900-920 -- -- -- -- -42 -38 4 10/23 E05-1391 32-21805 394904 742535 WOODMANSIE 187 1416-1436 -- -- -- -- -32 -26 6 10/22 E05-1490 31-17792 395651 744922 MOUNT HOLLY 41 364-376 -- -- -- -- -57 -50 7 11/14 E07-13 51-00032 395222.1 750634.4 RUNNEMEDE 31 111-160 -- -46 -44 -39 -30 -27 3 11/10 E07-15 31-06208 394651 745619.2 CLEMENTON 150 675-745 -78 -89 -97 -97 -- -90 -- 12/19 B07-18 31-02079 394739 745612.3 CLEMENTON *147 650-713 -- -- -93 -96 -100 -76 24 11/19 D07-115 31-00051 395149 745908 CLEMENTON 70 400-420 -- -84 -101 -95 -62 -58 4 12/22 E07-117 31-04897 395229 745711 CLEMENTON 158 552-562 -75 -79 -84 -91 -67 -66 1 11/07 E07-131 31-05096 395353 745707 MOORESTOWN 71 -342 -74 -87 -83 -86 -54 -65 -11 11/07 E07-151 51-00094 395514 750212 CAMDEN 30 -158 -51 -54 -54 -- -44 -32 12 11/17 E07-249 31-02703 394755.3 750343.3 RUNNEMEDE 65 426-447 -- -- -86 -86 -63 -64 -1 11/17 D07-252 31-05581 394801.5 750153 RUNNEMEDE *65 407-477 -83 -94 -91 -96 -66 -68 -2 11/17 B07-274 31-05226 395031.9 750344.4 RUNNEMEDE *55 269-349 -86 -92 -86 -91 -58 -63 -5 11/10 B07-275 31-03375 395230.8 750310.2 CAMDEN 60 236-267 -77 -78 -81 -72 -- -61 -- 11/10 B07-279 31-04798 395238.3 750314.8 CAMDEN 65 224-275 -76 -72 -77 -- -47 -53 -6 11/10 B07-285 31-03308 395246.8 750434 CAMDEN *37 144-191 -50 -51 -51 -45 -29 -29 0 11/10 E07-293 31-04986 395416 750335 CAMDEN 15 142-162 -56 -57 -57 -55 -43 -36 7 11/12 E07-311 31-04723 394927 750025.3 RUNNEMEDE 75 395-473 -80 -86 -91 -88 -63 -72 -9 11/12 B07-316 31-05100 395131.8 750229.5 RUNNEMEDE 75 271-348 -- -87 -83 -79 -52 -59 -7 11/12 C07-322 31-04283 395359.3 750444 CAMDEN 33 101-112 -- -53 -50 -46 -34 -31 3 11/10 E07-398 31-06646 394726.8 745909.1 CLEMENTON 200 668-698 -81 -96 -97 -- -- -75 -- 11/25 E07-404 31-03307 395056 750417 RUNNEMEDE 67 297-339 -78 -83 -82 -75 -50 -54 -4 11/10 E07-410 31-02360 395041.5 750055 RUNNEMEDE 95 -441 -90 -95 -94 -93 -63 -69 -6 11/10 E07-422 31-03306 395127.8 745951.7 CLEMENTON *71 379-421 -84 -88 -104 -109 -58 -62 -4 11/10 E07-423 31-04947 395128 745953 CLEMENTON 70 -459 -- -- -- -- -61 -65 -4 11/10 E07-477 -- 394215 745616 WILLIAMSTOWN 111 829-839 -64 -73 -77 -81 -70 -62 8 11/13 E07-521 31-12301 394745.6 745934.3 CLEMENTON *186 600-629 -- -- -97 -98 -81 -78 3 11/24 E
102 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 7. Water-level data for wells screened in the Upper Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longitude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water- level change (ft) 2003 measure- ment date Shut- down period 1978 1983 1988 1993 1998 2003 07-573 -- 395356.1 750736.7 PHILADELPHIA 11 -89 -- -10 -9 -5 -3 -2 1 11/07

E

07-727 31-31110 395455.6 745922.4 MOORESTOWN 40 175-202 -- -- -- -70 -53 -52 1 11/07

E

07-824 31-37826 394642.1 745908.2 CLEMENTON 150 590-665 -- -- -- -- -90 -72 18 12/19

B

15-1 31-02889 393912.8 750518 PITMAN EAST 133 746-800 -62 -69 -77 -80 -65 -53 12 11/18 --15-3 31-06676 394013.6 750559.3 PITMAN EAST 140 670-740 -63 -33 -71 -74 -62 -53 9 11/18

B

15-8 51-00101 394628.2 750812 WOODBURY 21 244-307 -50 -53 -61 -- -52 -46 6 11/21

B

15-28 30-00432 394754.5 751325.1 WOODBURY 70 191-216 -21 -23 -23 -27 -24 -19 5 11/24

D

15-60 31-02358 394206 750757 PITMAN WEST 150 562-612 -60 -70 -66 -70 -63 -65 -2 11/19

B

15-63 31-04176 394308 750659.3 PITMAN EAST 150 549-599 -59 -65 -64 -67 -57 -63 -6 11/19

B

15-127 31-03280 394346.9 750955.1 PITMAN WEST 140 -524 -46 -49 -50 -- -45 -37 8 11/21

E

15-187 -- 394543 750745 WOODBURY 45 325-355 -- -- -69 -66 -- -53 -- 11/24

B

15-194 31-05309 394731.9 751035.4 WOODBURY *16 230-265 -42 -47 -45 -46 -35 -34 1 11/06

D

15-227 31-04061 394427.5 750742.2 PITMAN WEST 99 447-487 -60 -64 -71 -68 -62 -55 7 11/06

E

15-240 30-00973 394510 751837 BRIDGEPORT 32 190-231 -21 -19 -21 -21 -19 -16 3 12/04

D

15-248 51-00029 394342.8 750432.3 PITMAN EAST 125 559-618 -63 -68 -80 -73 -- -54 -- 11/20

C

15-275 31-00170 394750.5 750904.9 WOODBURY *59 268-310 -42 -44 -53 -54 -57 -36 21 12/05

D

15-276 31-04567 394820.7 751023.5 WOODBURY 60 242-289 -39 -44 -46 -48 -40 -32 8 12/04

C

15-281 31-03021 394911.1 751023.4 WOODBURY 61 227-243 -35 -40 -37 -38 -30 -25 5 12/04

E

15-303 -- 395030 751235 WOODBURY 10 84-114 -6 -8 -9 -8 -7 -4 3 12/03

E

15-330 31-06356 394858.3 750845.7 WOODBURY 40 190-235 -44 -50 -49 -47 -38 -31 7 12/09

B

15-339 30-01161 394350 751909 WOODSTOWN 90 247-267 -19 -19 -20 -21 -20 -18 2 11/10

B

15-346 30-01565 394526.2 751336.6 WOODBURY 80 267-343 -- -24 -29 -35 -27 -21 6 11/21

E

15-355 30-01426 394821 751247.5 WOODBURY 42 205-245 -28 -30 -28 -28 -29 -19 10 11/24

B

15-378 -- 394523 751609 BRIDGEPORT 105 -239 -- -- -21 -21 -19 -15 4 12/16

A

15-433 31-17801 394629.1 750516.4 RUNNEMEDE *149 512-552 -- -55 -64 -68 -53 -51 2 12/08

B

15-617 30-03533-3 394637 751915 BRIDGEPORT 31 60-70 -- -- -7 -7 -8 -4 4 11/25

E

15-728 30-04549 394808 751723 BRIDGEPORT 4 46-56 -- -- -7 -7 -8 -4 4 11/17

E
Appendix 7 103

Appendix 7. Water-level data for wells screened in the Upper Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued[--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS 

well 

number

New 

Jersey 

permit 

number

Latitude Longitude USGS quadrangle

Altitude 

of land 

surface 

(ft)

Screened 

interval 

(ft)

Water-level altitude (ft) 1998-2003 

waterlevel 

change (ft)

2003 

measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

15-741 -- 394652 751003 WOODBURY 82 293-313 -- -- -44 -46 -38 -31 7 11/17 E15-773 31-26238 395206 751117 WOODBURY 10 30-50 -- -- -7 -1 0 2 2 11/17 E15-779 31-26239 395222.2 751118.5 WOODBURY 5 25-35 -- -- -8 -1 -1 0 1 11/17 E15-1000 31-21614 394646 750630 RUNNEMEDE 75 354-359 -- -- -71 -70 -56 -52 4 12/16 E15-1031 30-03412 394553 751919 BRIDGEPORT 47 95-105 -- -- -9 -10 -9 -6 3 11/23 E15-1088 50-00050 394408 751334 PITMAN WEST *40 -285 -- -- -- -- -- -18 -- 11/25 E15-1089 31-37705 395016 750616.9 RUNNEMEDE 45 198-258 -- -- -- -- -45 -42 3 11/13 E15-1105 30-04335 394244 751658 WOODSTOWN 145 357-377 -- -- -- -25 -22 -19 3 11/12 A15-1106 30-07949 395115.2 751252.8 WOODBURY *10 101-111 -- -- -- -9 -9 -6 3 12/03 E15-1346 30-03764 394826 751610 BRIDGEPORT 10 60-90 -- -- -- -- -11 -7 4 11/25 E15-1365 31-45998 394320 750156.4 PITMAN EAST 160 628-712 -- -- -- -- -- -62 -- 11/20 D15-1482 30-12607 394433 752010 WOODSTOWN 100 192-220 -- -- -- -- -15 -18 -3 11/10 E15-1483 30-12606 394433 752011 WOODSTOWN *102 186-216 -- -- -- -- -17 -12 5 11/10 E15-1513 30-05444 394126 751613 WOODSTOWN 78 357-367 -- -- -- -- -33 -30 3 11/10 A15-1543 31-49895 394332 750303 PITMAN EAST 150 616-703 -- -- -- -- -- -67 -- 11/20 D15-1545 30-06144 394109.4 751408.9 PITMAN WEST 130 476-486 -- -- -- -- -- -35 -- 12/08 B21-1 -- 401348.9 743050.2 ALLENTOWN 125 285-315 -- -- -- -- 36 35 -1 10/29 E21-19 28-05897 401610.8 743358.8 HIGHTSTOWN 90 133-181 71 68 69 70 71 69 -2 10/23 A21-46 28-02489 401119 743809 TRENTON EAST 60 138-141 32 -- -70 -- 26 35 9 10/29 E21-84 48-00063 401621 743127.9 HIGHTSTOWN 84 181-205 61 54 51 56 57 56 -1 10/23 B21-103 28-00801 401309.1 743700.8 ALLENTOWN 110 183-186 61 -- 58 60 59 65 6 10/24 A23-15 48-00064 401842.2 743052.9 HIGHTSTOWN 95 -110 59 65 64 67 69 68 -1 10/29 E23-98 28-01426 402050.6 742602.8 JAMESBURG 50 99-120 47 44 41 45 42 46 4 10/28 B23-101 28-07904 402027.3 742109.2 FREEHOLD 50 211-223 17 -- 11 19 18 19 1 10/22 A23-109 -- 402302 742255 NEW BRUNSWICK 24 -101 1 -2 -2 -2 17 7 -10 10/16 E23-142 49-29698 402346 741831 SOUTH AMBOY 90 199-249 8 4 9 8 -- 2 -- 10/15 B23-143 -- 402347 742037 SOUTH AMBOY 30 81-91 -- 5 5 7 6 8 2 10/15 E
104 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 7. Water-level data for wells screened in the Upper Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longitude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water- level change (ft) 2003 measure- ment date Shut- down period 1978 1983 1988 1993 1998 2003 23-173 -- 402406.4 741617.3 SOUTH AMBOY 60 173-193 -4 -7 -8 1 -1 -0 -1 12/01

E

23-180 -- 402438 742128 SOUTH AMBOY 19 57-67 4 4 4 5 4 5 1 10/15

E

23-182 -- 402449 741818 SOUTH AMBOY 31 66-71 17 15 13 16 17 16 -1 10/28

E

23-213 28-06470 401847.5 742338.9 JAMESBURG 100 195-198 -- -- -- -- 15 16 1 10/22

B

23-228 28-04251 402015 742756 JAMESBURG 147 128-138 66 58 55 60 62 61 -1 10/23

E

23-292 28-04250 402109 743011 HIGHTSTOWN 107 93-104 76 71 71 72 74 75 1 10/23

E

23-344 -- 402558 742012 SOUTH AMBOY 22 31-37 15 13 14 17 16 17 1 10/22

E

23-351 -- 402605 741958 SOUTH AMBOY 35 76-82 20 17 17 20 20 23 3 10/22

E

23-490 28-08490 401924.6 742618.9 JAMESBURG 167 287-325 51 -- -- -- -- 49 -- 10/24

E

23-508 -- 401801.3 743153.1 HIGHTSTOWN 105 -90 68 65 63 65 66 65 -1 10/23

E

23-565 28-11720 402009.7 742810 JAMESBURG *137 165-197 -- 52 -- -- 56 54 -2 10/24

B

23-775 28-11436 401717.7 742718.5 JAMESBURG *118 182-190 -- -- -- -- 39 39 -0 10/22

B

23-1156 29-12379 402235.4 741821.1 FREEHOLD 60 230-238 -- -- -4 4 3 1 -2 10/23

E

23-1200 28-17439 401811.1 742957.6 JAMESBURG *111 166-176 -- -- -- -- 66 65 -1 10/22

A

25-4 28-08915 401052 743524.5 ALLENTOWN *68 212-262 -- 21 -- -- 26 20 -6 10/24

B

25-13 29-07461 401137.2 740120.3 ASBURY PARK 29 1105-1165 -16 -27 -29 -15 -17 -15 2 11/05

E

25-37 29-04068 401608 741206.1 MARLBORO 137 686-706 -30 -35 -21 -14 -18 -15 3 10/30

E

25-56 28-05400 401743.1 742134.7 FREEHOLD 70 363-384 9 1 18 16 12 14 2 10/28

A

25-62 29-03492 401134 741013 FARMINGDALE 80 831-885 -20 -34 -29 -11 -15 -16 -1 10/31

E

25-91 29-05708 401516 741529 FREEHOLD 140 632-685 -38 -47 -34 -13 -15 -15 0 11/05

E

25-97 29-04708 401625 741500 FREEHOLD 195 596-656 -42 -47 -38 -19 -23 -19 4 11/03

E

25-103 29-07494 401645.6 741735.4 FREEHOLD 107 478-575 -53 -36 -39 -14 -17 -11 6 11/03

E

25-112 29-03096 402538.2 740934.3 KEYPORT 44 312-352 -41 -36 -39 -14 -12 -20 -8 11/03

D

25-116 29-03509 402400 735909.8 SANDY HOOK 10 600-660 -15 -18 -16 -- -4 -5 -1 10/22

E

25-121 29-03033 402023 741059 MARLBORO 80 560-590 -26 -33 -35 -15 -17 -16 1 10/28

E

25-175 29-05851 401246 741516.6 ADELPHIA *102 681-762 -27 -32 -38 -- -- -12 -- 12/10

E

25-195 29-01297 402621.2 740742.7 KEYPORT 15 290-350 -- -35 -32 -21 -18 -19 -1 10/31

B
Appendix 7 105

Appendix 7. Water-level data for wells screened in the Upper Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued[--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS 

well 

number

New 

Jersey 

permit 

number

Latitude Longitude USGS quadrangle

Altitude 

of land 

surface 

(ft)

Screened 

interval 

(ft)

Water-level altitude (ft) 1998-2003 

waterlevel 

change (ft)

2003 

measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

25-197 29-08379 402535.9 741214 KEYPORT 35 304-354 -27 -26 -25 -10 -10 -12 -2 10/23 E25-206 -- 402625 741144 KEYPORT 14 225-249 -13 -14 -15 -3 -4 -8 -4 10/14 E25-214 28-07184 401434.3 742144.9 ADELPHIA *195 585-641 -1 0 -- -- 8 8 -0 10/28 D25-218 -- 401557 742317 JAMESBURG 250 510-527 20 13 12 -- 22 22 0 10/24 B25-220 28-06114 401536.6 742012.2 FREEHOLD *125 539-569 -16 -24 -24 -5 -8 -7 1 10/23 B25-244 29-05790 401848 741503.9 FREEHOLD *161 524-594 -34 -42 -47 -19 -25 -18 7 11/18 B25-259 29-00073 402034.3 741425.9 MARLBORO 155 508-593 -18 -26 -27 -5 -5 -5 0 10/29 B25-284 29-01731 402516 741447.2 KEYPORT 90 231-271 -7 -7 -11 4 4 0 -4 10/31 B25-288 29-05350 402349.7 741230.7 KEYPORT 83 345-425 -31 -33 -36 -11 -14 -14 -0 10/22 E25-290 -- 402402.9 741244.5 KEYPORT 71 -353 -- -- -- -- -- -8 -- 12/09 E25-292 29-03729 402358.9 741232.9 KEYPORT 87 341-414 -33 -33 -34 -- -- -12 -- 12/09 E25-303 29-05164 402106 740809 MARLBORO 70 527-600 -- -- -61 -19 -14 -22 -8 10/31 E25-316 29-04299 402536 735903 SANDY HOOK 11 371-397 -5 -4 -9 -2 -1 -1 0 10/14 E25-322 28-01842 401157 742417 ROOSEVELT 210 667-697 4 -2 -4 7 7 5 -2 10/29 E25-334 29-00137 401214 740354 ASBURY PARK 23 1013-1065 -21 -37 -37 -- -29 -41 -12 10/22 E25-360 29-07941 402054.5 740317.7 LONG BRANCH 146 668-759 -31 -34 -34 -- -- -33 -- 11/06 B25-436 29-06193 400951 740725.1 ASBURY PARK 60 990-1033 -26 -41 -43 -17 -21 -19 2 11/05 C25-459 29-09335 402218.7 740335.1 LONG BRANCH 80 551-612 -- -24 -25 -15 -19 -13 6 11/05 C25-493 29-07784 401231 741125 FARMINGDALE 115 -860 -- -35 -38 -17 -19 -19 0 11/04 C25-500 28-12215 400850 743403.1 ALLENTOWN 88 270-305 -- 4 0 -- 4 2 -2 10/29 B25-502 29-11033 401412.8 741607.4 ADELPHIA *117 616-671 -- -59 -51 -- -28 -22 6 11/03 --25-509 28-12280 401315.9 742809.9 ROOSEVELT *167 390-430 -- 26 24 34 33 31 -2 10/30 B25-513 29-11230 402443.9 740240.9 SANDY HOOK 20 506-548 -- -- -- -3 1 10 9 10/23 E25-514 29-12732 402641 740910 KEYPORT 14 266-312 -- -26 -27 -15 -9 -16 -7 10/22 E25-550 29-13610 401258 741628 ADELPHIA 105 636-656 -- -- -39 -12 -16 -13 3 11/03 E25-567 29-15851 402630 741028 KEYPORT 10 250-270 -- -- -23 -9 -7 -14 -7 10/22 E25-568 29-16343 402652 741059 KEYPORT 10 245-265 -- -- -12 -2 0 -5 -- 10/31 E
106 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 7. Water-level data for wells screened in the Upper Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longitude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water- level change (ft) 2003 measure- ment date Shut- down period 1978 1983 1988 1993 1998 2003 25-568 Freshwater equivalent water level 0 -4 -4 25-639 29-18403-7 401105 741201 FARMINGDALE 112 891-901 -- -- -35 -16 -19 -19 0 10/21

E

25-712 29-21610 401901.1 740656 LONG BRANCH *43 598-668 -- -- -- -- -- -21 -- 10/22

E

25-721 29-15170 401130.6 740509.6 ASBURY PARK 130 999-1149 -- -- -- -- -17 -15 2 10/22

E

25-724 29-17817 401923 741529.8 FREEHOLD 130 446-551 -- -- -- -12 -18 -13 5 11/18

D

25-726 29-24703 401412 741602 ADELPHIA *125 584-673 -- -- -- -- -24 -19 5 11/03

D

25-729 29-21611 401907.5 740647.8 LONG BRANCH 35 575-655 -- -- -- -17 -18 -17 1 10/22

E

25-736 29-21612 401907.9 740708.8 LONG BRANCH *40 569-669 -- -- -31 -- -- -21 -- 10/22

E

25-749 48-00045 400844 743224 ALLENTOWN 100 -350 -- -- -- -- -0 -2 -2 11/06

D

25-823 29-48464 402046.9 740420.2 LONG BRANCH 40 605-700 -- -- -- -- -- -14 -- 12/09

D

25-828 29-44304 402442.5 741000.3 KEYPORT 63 399-428 -- -- -- -- -- -20 -- 11/03

E

25-830 28-18879 401025 743230.2 ALLENTOWN 102 330-340 -- -- -- -- -- 16 -- 11/06

D

29-70 33-01159 395906.3 740358 SEASIDE PARK 5 1375-1495 -21 -28 -26 -22 -27 -29 -2 11/05

C

29-100 33-00360 395956 740342 SEASIDE PARK 8 1428-1479 -18 -27 -24 -21 -23 -26 -3 10/29

A

29-134 29-03570 400328.9 741943.7 LAKEHURST *97 846-962 -22 -26 -29 -41 -50 -42 8 11/03

B

29-238 28-08229 400820 742632.9 ROOSEVELT 130 584-648 -10 -4 -8 -5 -14 -7 7 11/03

A

29-504 29-03142 400211.2 740308.3 POINT PLEASANT 5 1263-1368 -18 -27 -25 -18 -22 -23 -1 10/15

E

29-524 29-05445 400409.7 740403.9 POINT PLEASANT 8 1183-1260 -20 -33 -30 -- -- -25 -- 10/24

E

29-531 29-03345 400452.5 740413 POINT PLEASANT 18 1256-1342 -19 -33 -29 -18 -25 -22 3 10/29

B

29-577 33-05553 395742.2 740435 SEASIDE PARK 7 1394-1498 -- -22 -20 -20 -21 -33 -12 12/04

B

29-1040 29-23401 400039 741512.6 LAKEHURST 38 1013-1184 -- -- -- -27 -38 -49 -11 10/16

B

29-1309 33-37783 395926.5 741229.6 TOMS RIVER *75 -1340 -- -- -- -- -- -47 -- 10/16

E

29-1365 33-37776 395637 740441.7 SEASIDE PARK 4 1389-1580 -- -- -- -- -27 -60 -33 12/04

B

29-1380 29-39030 400036 741934 LAKEHURST 65 937-1024 -- -- -- -- -32 -52 -20 10/31

B

29-1577 29-45818 400143.6 741927.5 LAKEHURST 78 905-985 -- -- -- -- -- -40 -- 10/30

E

29-1623 29-48193 400409.4 740403.7 POINT PLEASANT 8 1190-1280 -- -- -- -- -- -26 -- 10/24

E

33-76 30-00661 394328 752445 PENNS GROVE 27 118-123 3 0 2 1 1 3 2 11/25

A
Appendix 7 107

Appendix 7. Water-level data for wells screened in the Upper Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued[--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS 

well 

number

New 

Jersey 

permit 

number

Latitude Longitude USGS quadrangle

Altitude 

of land 

surface 

(ft)

Screened 

interval 

(ft)

Water-level altitude (ft) 1998-2003 

waterlevel 

change (ft)

2003 

measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

33-111 30-01253 393746 752954 PENNS GROVE 10 190-235 -14 -15 -17 -19 -20 -21 -1 11/21 E33-253 -- 393349.5 752753 SALEM 3 335-340 -22 -23 -27 -28 -27 -28 -1 11/20 E33-342 -- 394238.1 752724.1 PENNS GROVE 18 46-51 -5 1 -1 -1 3 9 6 11/21 E33-355 -- 393914 751929 WOODSTOWN 58 -360 -29 -22 -24 -17 -24 -22 2 11/06 E33-361 30-01815 394203.9 752657.9 PENNS GROVE 13 44-54 -9 -8 -9 -6 1 4 3 11/24 D33-671 30-05148 393954.5 753012.4 WILMINGTON SO 7 87-102 -- -- -- -3 -7 -3 4 11/21 E33-686 30-08335 393750.3 753146.3 WILMINGTON SO 10 110-130 -- -- -- -10 -7 -1 6 11/21 C33-697 30-01113 394204.5 752653.1 PENNS GROVE 12 47-62 -- -- -- -- -- 2 -- 11/24 A33-841 35-17766 393055 750834 ELMER 77 1005-1025 -- -- -- -- -48 -43 5 11/18 E33-920 30-11400 394238.7 752200.8 WOODSTOWN *79 184-204 -- -- -- -- -- -6 -- 11/06 B33-952 30-13727 393648.8 753232.5 DELAWARE CITY *24 147-152 -- -- -- -- -- -8 -- 11/20 E33-953 30-13726 393724.83 753224.97 DELAWARE CITY *7 109-114 -- -- -- -- -- 2 -- 11/20 EP10116 -- 395443 750831 PHILADELPHIA 9 60-75 -- -- -6 -- -6 -7 -1 11/07 E

Delaware wells

Dc43-20 81386 393603 753752 ST GEORGES 54 130-140 -- -- -- -- -- 1 -- 12/09 EDc52-56 81385 393551 753809 ST GEORGES 52 126-136 -- -- -- -- -- 2 -- 12/09 EEa45-04 100389 393133 754558 ELKTON 40 85-105 -- -- -- -- -5 -7 -2 12/09 --Eb23-22 46613 393316 754215 ST GEORGES *59 101-105 -- -- -- -- 34 37 3 12/12 EEb43-20 190201 393105 754249 ST GEORGES 70 197-227 -- -- -- -- -- -27 -- 12/09 --Fb11-08 106955 392928 754425 MIDDLETOWN 70 213-299 -- -- -- -- -- -30 -- 12/23 DFb11-10 157175 392923 754427 MIDDLETOWN 70 200-230 -- -- -- -- -25 -25 0 12/23 EFb33-12 10453 392710 754257 MIDDLETOWN 62 245-345 -- -- -- -- -- -80 -- 12/23 BGd33-05 Gd33-05 392212 753241 SMYRNA 18 628-660 -- -- -- -- -11 -16 -5 12/12 E

Appendix 8

Water-level data for wells screened in the Middle and undifferentiated Potomac-RaritanMagothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.
110 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 8. Water-level data for wells screened in the Middle and undifferentiated Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longi- tude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water- level change (ft) 2003 mea- sure- ment date Shut- down period 1978 1983 1988 1993 1998 2003 01-1221 35-14298 393122.4 745520 BUENA *97 1532-1980 -- -- -- -53 -46 -41 5 11/13

E

01-1221 Freshwater equivalent water level -40 -33 -28 505-63 -- 400213 745107 BRISTOL 45 284-294 -16 -16 -21 -21 -21 -16 5 10/31

E

05-70 27-05259 400313 745003 BRISTOL 60 140-200 -13 -11 -16 -- -16 -17 -1 11/05

B

05-87 27-03694 400407.4 745246.7 BEVERLY 10 50-60 -- -8 -13 -9 -11 -16 -5 11/05

E

05-114 28-02901 400606 743922 COLUMBUS 85 388-392 -7 -8 -12 -13 -11 -11 0 11/04

A

05-119 28-04082 400821 743844 TRENTON EAST 100 -305 -- -- -- -- 8 6 -2 10/30

E

05-122 28-05042 400940.9 744013.8 TRENTON EAST 75 337-367 4 0 -1 -4 -0 -1 -1 10/30

B

05-126 31-04276 395928.5 745921.8 MOORESTOWN 73 157-196 -8 -15 -16 -16 -15 -13 2 11/07

C

05-128 31-04733 395938.1 745808.5 MOORESTOWN 35 166-225 -- -- -- -- -- -16 -- 11/07

B

05-206 28-03595 400324.8 744456.1 COLUMBUS 62 370-380 -24 -25 -23 -29 -27 -25 2 12/08

A

05-214 -- 400530.1 744428.9 COLUMBUS 60 -319 -10 -- -13 -12 -12 -18 -6 12/08

E

05-232 31-06020 395725.7 745913.2 MOORESTOWN *9 210-270 -40 -46 -44 -46 -46 -36 10 11/25

B

05-261 -- 395525 745024 MOUNT HOLLY 73 740-750 -48 -58 -61 -62 -51 -47 4 10/31

E

05-265 31-04727 395702.3 745805.2 MOORESTOWN *24 248-288 -56 -65 -65 -- -54 -51 3 11/13

E

05-273 31-04770 395836.4 745641.1 MOORESTOWN 70 274-302 -27 -29 -32 -33 -26 -23 3 11/18

E

05-284 31-03806 395936.8 745450.9 MOORESTOWN 62 298-338 -26 -29 -28 -- -28 -23 5 11/13

E

05-290 31-06674 395936.3 744652.2 MOUNT HOLLY 15 545-615 -55 -57 -63 -60 -48 -45 3 12/05

B

05-297 31-01610 395526.8 745411.1 MOORESTOWN *51 441-457 -- -- -68 -66 -54 -49 5 11/18

E

05-330 52-00008 395949.2 743653.5 BROWNS MILLS 140 1056-1086 -49 -51 -65 -65 -59 -53 6 11/14

E

05-332 48-00269 400105.8 743718.8 NEW EGYPT 150 1064-1104 -39 -42 -52 -51 -39 -33 6 11/14

E

05-333 32-07668 400128 743653.4 NEW EGYPT *128 1030-1051 -50 -51 -64 -- -49 -42 7 11/07

D

05-336 28-00795 400150.3 743425.8 NEW EGYPT 105 1036-1089 -- -- -55 -63 -53 -43 10 11/07

E

05-385 32-03778 395839 744248 PEMBERTON 30 747-823 -- -52 -61 -70 -52 -51 1 11/20

C

05-388 52-00009 395939 743741.2 PEMBERTON 160 1090-1140 -42 -47 -62 -50 -52 -38 14 11/14

E

05-436 -- 400118 744009 COLUMBUS 96 757-800 -- -- -- -42 -33 -31 2 11/04

E
Appendix 8 111

Appendix 8. Water-level data for wells screened in the Middle and undifferentiated Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued[--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS 

well 

number

New 

Jersey 

permit 

number

Latitude Longi- tude USGS quadrangle

Altitude 

of land 

surface 

(ft)

Screened 

interval 

(ft)

Water-level altitude (ft) 1998-2003 

waterlevel 

change 

(ft)

2003 

measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

05-440 28-05128 400243 744223 COLUMBUS 72 603-613 -29 -29 -36 -35 -30 -31 -1 10/23 E05-634 47-00001 400039.1 744808.1 BRISTOL 55 -516 -56 -58 -60 -64 -77 -72 5 11/07 E05-683 -- 395122 743016 CHATSWORTH 141 2102-2117 -30 -34 -42 -39 -32 -29 3 10/22 E05-726 28-08443 400212.7 743652.8 NEW EGYPT 140 667-732 -- -- -41 -36 -37 -23 14 11/18 E05-749 31-07140 395508.5 745537.4 MOORESTOWN 75 -425 -60 -69 -75 -73 -61 -54 7 11/18 E05-801 27-06877 400020 750113 FRANKFORD 20 5-25 -- 0 -1 -4 -3 -1 2 11/13 E05-1089 27-08534 400201 745308.5 BEVERLY 19 176-251 -- -- -25 -25 -35 -15 20 11/05 E05-1158 28-28844 400316 744333 COLUMBUS 45 450-460 -- -- -- -28 -24 -26 -2 11/03 B05-1172 28-20985 400713 744526 BRISTOL 42 270-290 -- -- -- -- 1 -0 -1 11/03 C05-1184 27-12174 400701 744832 BRISTOL 30 110-120 -- -- -- 2 -2 2 4 11/05 E05-1410 28-35141 400531 744310.2 COLUMBUS 95 439-522 -- -- -- -- -- -34 -- 11/07 B05-1430 28-35104 400813 744354 TRENTON EAST 55 160-170 -- -- -- -- -- 8 -- 10/30 B05-1472 27-20750 400051.3 745346.7 BEVERLY *25 190-240 -- -- -- -- -- -25 -- 11/05 D05-1484 27-14624 400249.6 745319.5 BEVERLY 39 215-253 -- -- -- -- -17 -12 5 11/05 B05-1524 27-15940 400110 745711 BEVERLY 70 155-175 -- -- -- -- -- 6 -- 11/10 D05-1525 28-19074 400300 743512 NEW EGYPT 130 800-820 -- -- -- -- -- -27 -- 12/18 D05-1527 27-15342 400539 744728 BRISTOL 47 70-110 -- -- -- -- -- 1 -- 11/05 E07-48 31-00013 395528.8 750640.9 CAMDEN 14 111-135 -26 -26 -20 -18 -11 -8 3 12/12 E07-124 31-07020 395249.8 745934.1 MOORESTOWN 77 483-626 -77 -84 -92 -85 -55 -60 -5 11/10 B07-132 31-05095 395353 745707 MOORESTOWN 71 -500 -82 -81 -81 -- -53 -66 -13 11/07 E07-135 31-05218 395352.7 745701.7 MOORESTOWN 72 443-493 -- -- -73 -81 -50 -64 -14 11/07 B07-142 31-04098 395438.5 750102 CAMDEN 32 321-378 -- -- -66 -64 -48 -44 4 11/07 E07-186 -- 394950 745854 CLEMENTON 70 -680 -77 -85 -88 -89 -64 -65 -1 11/12 E07-304 31-05108 395404 750201 CAMDEN 50 307-372 -- -- -72 -75 -59 -46 13 11/13 E07-329 31-04836 395626.6 750405 CAMDEN 16 110-140 -36 -31 -34 -29 -21 -17 4 11/12 E07-413 31-04561 394922 745629 CLEMENTON 149 706-717 -69 -78 -82 -85 -66 -63 3 11/07 E
112 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 8. Water-level data for wells screened in the Middle and undifferentiated Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longi- tude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water- level change (ft) 2003 mea- sure- ment date Shut- down period 1978 1983 1988 1993 1998 2003 07-476 -- 394215 745616 WILLIAMSTOWN 111 1485-1495 -46 -53 -57 -58 -49 -43 6 11/13

E

07-534 -- 395553 750206 CAMDEN 40 198-219 -- -48 -49 -45 -38 -29 9 11/07

E

07-726 31-31111 395452.9 745918.7 MOORESTOWN 40 276-422 -- -- -- -70 -53 -52 1 11/07

E

07-733 31-40817 395130.6 750229.5 RUNNEMEDE 75 452-535 -- -- -- -82 -53 -61 -8 11/12

C

07-734 31-40970 395218.1 750300.4 RUNNEMEDE *55 333-499 -- -- -- -- -54 -58 -4 11/10

B

07-986 31-43797 395630 750408 CAMDEN 28 102-180 -- -- -- -- -25 -19 6 11/12

E

07-1007 31-58577 395755.5 750231 CAMDEN 33 99-109 -- -- -- -- -- -12 -- 11/14

E

07-1040 31-59619 395744.3 750232.6 CAMDEN 40 105-115 -- -- -- -- -- -15 -- 11/14

E

07-1057 31-59365 395818 750334.8 CAMDEN 66 78-83 -- -- -- -- -- -8 -- 11/14

E

11-137 -- 392514 745216 DOROTHY 85 2083-2093 -37 -43 -49 -53 -55 -53 2 11/13

E

11-137 Freshwater equivalent water level -14 -19 -25 -30 -32 -30 215-24 31-05513 395114.7 750704.2 RUNNEMEDE *35 282-345 -53 -55 -51 -45 -36 -33 3 11/25

E

15-135 30-01314 394516 752240 MARCUS HOOK 7 130-180 -- -1 -2 -2 -3 -1 2 11/12

E

15-140 30-01248 394608 752134 BRIDGEPORT 6 132-184 2 -1 -2 -11 -2 -1 1 11/14

E

15-213 30-00602 394947.6 751420.2 WOODBURY 10 135-175 -10 -10 -10 -10 -10 -6 4 11/24

E

15-236 30-01177 394434.5 751839.8 WOODSTOWN 75 241-312 -21 -20 -22 -12 -20 -19 1 11/10

B

15-279 30-00916 394857 751249 WOODBURY 17 315-320 -23 -24 -26 -26 -25 -17 8 12/03

E

15-348 30-01776 394910 751539.4 BRIDGEPORT 20 105-135 -9 -10 -11 -10 -10 -7 3 11/23

A

15-374 31-13385 394854.1 750727.1 RUNNEMEDE 50 430-486 -- -65 -63 -63 -50 -46 4 11/25

C

15-415 31-14478 394834 751043 WOODBURY 40 287-307 -- -42 -39 -42 -34 -27 7 12/04

E

15-444 30-02032 394756 752343 MARCUS HOOK 16 65-70 -- -- -- -- -8 -7 1 11/14

E

15-569 30-02405 394533.7 752050.8 BRIDGEPORT 32 161-201 -- -- -12 -9 -8 -5 3 11/13

E

15-585 30-02522 394704 752057 BRIDGEPORT 8 79-89 -- -- 1 1 -1 1 2 11/20

E

15-616 30-03532-5 394637 751915 BRIDGEPORT 31 230-240 -- -- -8 -8 -8 -5 3 11/23

E

15-620 30-03677 394804 751932 BRIDGEPORT 7 131-141 -- -- 2 2 1 4 3 11/23

E

15-679 30-03624 394946 751611 BRIDGEPORT 10 118-128 -- -- -3 -7 -5 -2 3 12/04

E
Appendix 8 113

Appendix 8. Water-level data for wells screened in the Middle and undifferentiated Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued[--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS 

well 

number

New 

Jersey 

permit 

number

Latitude Longi- tude USGS quadrangle

Altitude 

of land 

surface 

(ft)

Screened 

interval 

(ft)

Water-level altitude (ft) 1998-2003 

waterlevel 

change 

(ft)

2003 

measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

15-713 30-04348 394808 751723 BRIDGEPORT 6 125-155 -- -- -8 -7 -7 -4 3 11/17 E15-727 30-04548 394808 751723 BRIDGEPORT 5 195-216 -- -- -8 -8 -8 -5 3 11/17 E15-774 31-26241 395206 751117 WOODBURY 10 93-113 -- -- -1 -- -- -1 -- 11/17 E15-780 31-26244 395223 751116 WOODBURY 5 75-85 -- -- -2 -5 -4 -3 1 11/17 E15-998 -- 394031.2 750607 PITMAN EAST 141 820-837 -- -- -64 -- -56 -47 9 12/10 E15-1015 -- 394944 751727 BRIDGEPORT 5 137-142 -- -- -- -- -- -4 -- 11/25 E15-1036 31-22504 394741 750806.8 WOODBURY 60 259-319 -- -- -- -63 -51 -45 6 11/13 E15-1176 31-43251 394930.2 751014.9 WOODBURY *44 174-184 -- -- -- -- -27 -21 6 11/21 D15-1484 30-12608 394434 752011 WOODSTOWN 104 280-300 -- -- -- -- -14 -14 0 11/10 A15-1485 31-48720 395037 750829 WOODBURY 30 160-306 -- -- -- -- -33 -29 4 11/21 D15-1504 30-12671 394527 751539 BRIDGEPORT 92 458-478 -- -- -- -- -29 -27 2 11/25 E15-1540 -- 395038.8 751416.6 WOODBURY 16 130-140 -- -- -- -- -- -4 -- 12/09 E21-12 28-07034 401536.7 742915.9 JAMESBURG 115 520-560 28 27 23 25 37 32 -5 11/06 B21-22 28-05440 401702.8 743104.5 HIGHTSTOWN 103 337-367 50 45 35 41 47 46 -1 10/23 A21-25 28-01262 401717 743351 HIGHTSTOWN 100 205-226 65 64 67 64 64 64 0 10/23 B21-43 28-05409 401101.6 744150.1 TRENTON EAST *6 118-138 -- 2 4 4 3 3 0 10/30 B21-54 28-04602 401306.3 743917.7 TRENTON EAST 85 194-243 -- -- -- 40 39 36 -3 10/24 B21-73 28-02927 401420.1 744005.5 TRENTON EAST 80 128-144 -- -- -- 47 40 45 5 10/24 E21-101 28-06030 401241.5 743443.1 ALLENTOWN *140 366-421 35 42 40 43 42 41 -1 10/29 A21-120 28-05368 401556 743703.3 HIGHTSTOWN *74 96-121 71 69 57 -- 68 71 3 10/28 E21-122 28-06455 401554 743658.3 HIGHTSTOWN 75 75-126 -- -- -- -- 67 71 4 10/29 E21-554 28-33402 401457 743202 ALLENTOWN 140 353-443 -- -- -- -- -- 50 -- 12/11 E21-561 28-14731 401518.3 743118.8 HIGHTSTOWN *113 230-270 -- -- -- -- -- 56 -- 10/23 D23-9 28-00180 401802.3 743210.7 HIGHTSTOWN *98 250-280 69 -- 62 65 65 67 2 10/23 E23-16 28-07800 401842.2 743054.2 HIGHTSTOWN 95 230-260 66 60 58 62 63 63 -0 10/29 E23-17 28-04589 401842.6 743051.8 HIGHTSTOWN 98 268-298 67 61 60 -- 65 64 -1 10/29 E
114 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 8. Water-level data for wells screened in the Middle and undifferentiated Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longi- tude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water- level change (ft) 2003 mea- sure- ment date Shut- down period 1978 1983 1988 1993 1998 2003 23-70 -- 402555 742718 NEW BRUNSWICK 73 0-21 57 56 56 57 57 58 1 10/22

E

23-97 -- 402247 742502 NEW BRUNSWICK 39 236-301 2 2 6 29 27 18 -9 10/28

E

23-106 -- 402251 742247 NEW BRUNSWICK 27 -132 -- -- -- 4 13 7 -6 10/15

E

23-107 -- 402252 742245 NEW BRUNSWICK 28 311-334 -- -3 -0 -- 8 6 -2 10/15

E

23-132 -- 402335 742135 SOUTH AMBOY 25 262-267 -44 -38 -36 -3 4 13 9 10/15

E

23-147 29-04998 402352.1 741837.8 SOUTH AMBOY 80 425-475 -- -79 -65 -16 -18 -28 -10 10/16

B

23-176 29-06429 402407 741923 SOUTH AMBOY 45 321-363 -61 -- -- -- -- -29 -- 10/15

E

23-194 -- 402536 742017 SOUTH AMBOY 18 201-281 -76 -46 -59 -8 -14 -17 -3 10/22

E

23-206 29-00768 402700.6 741451.6 KEYPORT 60 360-395 -75 -78 -86 -31 -25 -30 -5 10/03

E

23-229 28-04252 402015 742756 JAMESBURG 147 319-330 58 51 48 55 57 54 -3 10/23

E

23-273 -- 401932 743528 HIGHTSTOWN 76 70-75 -- -- -- 47 47 48 1 10/23

E

23-291 28-04249 402109 743012 HIGHTSTOWN 107 192-203 73 65 64 67 70 70 -0 10/23

E

23-306 28-06538 402147 742846 JAMESBURG 120 201-207 75 69 69 72 76 75 -1 10/23

E

23-365 -- 402633 742119 SOUTH AMBOY 6 148-160 -52 -43 -51 -9 -14 -19 -5 10/16

E

23-380 48-36510 402659.5 742020.1 SOUTH AMBOY 48 181-237 -57 -43 -38 -5 -12 -12 0 12/01

B

23-401 29-05352 402744.8 741627.1 SOUTH AMBOY 44 254-288 -75 -80 -77 -- -14 -38 -24 10/20

E

23-438 28-09722 402600.8 742141.7 SOUTH AMBOY 20 132-182 -49 -38 -46 -4 -8 -11 -3 10/20

B

23-439 28-05987 402633 742159 SOUTH AMBOY 21 121-126 -40 -32 -38 -2 -5 -9 -4 10/16

E

23-482 -- 403242 741616 PERTH AMBOY 11 44-76 -3 9 10 10 10 10 0 10/16

E

23-552 28-10991 402017.9 743019.8 HIGHTSTOWN 105 116-166 -- -- 59 88 68 64 -4 10/20

D

23-1160 28-20882-0 402720 741949 SOUTH AMBOY 86 210-230 -- -- -54 -13 -13 -19 -6 10/28

E

23-1181 29-19615-9 402742 741905 SOUTH AMBOY 70 127-137 -- -- -- -24 -20 -25 -5 10/28

E

23-1346 -- 402009.8 742809.4 JAMESBURG 130 276-337 -- -- -- -- 44 41 -3 10/24

B

25-153 29-05942 402444 741008 KEYPORT 65 635-690 -47 -75 -116 -20 -21 -21 0 12/19

B

25-230 29-06353 402004.6 741853.3 FREEHOLD 125 580-670 -41 -36 -49 -14 -16 -13 3 11/18

B

25-247 29-04285 401900.5 741806.4 FREEHOLD 146 762-832 -26 -34 -48 -8 -16 -14 2 11/18

E
Appendix 8 115

Appendix 8. Water-level data for wells screened in the Middle and undifferentiated Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued[--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS 

well 

number

New 

Jersey 

permit 

number

Latitude Longi- tude USGS quadrangle

Altitude 

of land 

surface 

(ft)

Screened 

interval 

(ft)

Water-level altitude (ft) 1998-2003 

waterlevel 

change 

(ft)

2003 

measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

25-262 29-05023 402103.3 741350.6 MARLBORO 140 730-810 -36 -- -- -- -- -22 -- 10/29 E25-268 29-06361 402122.6 741507.3 FREEHOLD 114 632-698 -40 -50 -64 -12 9 -24 -33 10/22 E25-272 29-06527 402208 741451 MARLBORO 117 670-680 -44 -55 -73 -17 -21 -29 -8 10/21 E25-320 -- 402705 735957 SANDY HOOK 14 838-878 -4 -9 -10 -1 -1 0 1 10/23 B25-495 -- 401851 740300.1 LONG BRANCH 10 -1000 -- -- -11 -3 -2 -2 -0 11/03 E25-562 29-13329 402540.5 741212.3 KEYPORT 30 500-555 -- -- -- -- -- -37 -- 10/23 E25-634 29-16237 401520 741711 FREEHOLD 170 877-914 -- -- -- -22 -20 -25 -5 11/18 E25-635 29-18402-9 401105 741201 FARMINGDALE 111 1226-1330 -- -- -38 -23 -18 -22 -4 10/21 E25-711 29-14303 401744 741902 FREEHOLD 90 649-756 -- -- -35 -4 -8 -7 1 11/18 B25-725 29-24426 401302.7 741630.9 ADELPHIA 100 918-997 -- -- -- -- -27 -30 -3 11/03 E25-728 28-21488 401743.2 742134.1 FREEHOLD 70 541-621 -- -- -24 -1 -3 -4 -1 10/28 B25-731 28-22008 401840.7 742158.5 FREEHOLD *71 541-628 -- -- -- -- 3 2 -1 10/22 B29-19 -- 394829 740533 BARNEGAT LIGHT 9 2736-2756 0 -6 -11 -10 -5 -5 0 10/21 E29-47 -- 400429.6 740833.4 LAKEWOOD 8 1709-1749 -36 -41 -65 -45 -40 -17 23 10/24 E29-85 -- 395929 741419 TOMS RIVER 67 1460-1480 -23 -29 -40 -30 -20 -23 -3 10/29 E29-118 29-04322 400200 742109 LAKEHURST 96 1397-1583 -27 -28 -41 -29 -41 -23 18 12/10 E29-132 29-03726 400328.9 741944.8 LAKEHURST *98 1606-1728 -30 -34 -48 -42 -38 -29 9 11/03 D29-440 29-06549 400501.7 741324.7 LAKEWOOD 72 1357-1602 -20 -31 -44 -29 -20 -21 -1 11/05 B29-490 33-01343 395911.7 742130.4 KESWICK GROVE *100 1436-1636 -30 -47 -33 -18 -19 -21 -2 10/28 E29-576 29-08936 400653.1 741714.6 LAKEHURST 135 1276-1462 -32 -35 -48 -40 -36 -33 3 11/03 B29-581 48-00056 400826.2 742641.9 ROOSEVELT 130 876-976 -1 -16 -26 -17 -14 -12 2 11/03 C29-588 29-09259 400438.5 741106 LAKEWOOD 73 1410-1620 -- -24 -53 -33 -21 -25 -4 11/09 C29-626 33-10224 395721.5 741228 TOMS RIVER 9 1700-1875 -- -23 -33 -23 -14 -24 -10 10/31 B29-1113 29-25859 400046.6 740326.4 POINT PLEASANT 10 1852-1974 -- -- -- -- -7 -7 0 10/15 E29-1265 28-37964 400111.1 742237.6 CASSVILLE 95 1315-1552 -- -- -- -- -- -23 -- 10/30 B33-65 -- 393912 752435 PENNS GROVE 30 501-512 -14 -15 -18 -- -18 -17 1 11/24 E
116 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 8. Water-level data for wells screened in the Middle and undifferentiated Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longi- tude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water- level change (ft) 2003 mea- sure- ment date Shut- down period 1978 1983 1988 1993 1998 2003 33-106 -- 393514 752916 SALEM 5 359-365 -- -- -- -31 -31 -31 0 11/28

A

33-119 30-00018 394009 753041.2 WILMINGTON SO 7 210-230 -46 -39 -43 -44 -38 -46 -8 11/21

D

33-158 30-00763 393848 752009 WOODSTOWN 62 562-575 -- -- -25 -17 -25 -23 2 11/06

E

33-166 -- 393942 752233 PENNS GROVE 47 568-578 -14 -15 -18 -- -18 -16 1 11/24

E

33-187 -- 394037.7 751913.3 WOODSTOWN 73 664-672 -25 -26 -28 -29 -28 -25 3 11/18

E

33-198 30-01383 394117 752206 WOODSTOWN 51 337-362 -21 -23 -25 -26 -25 -25 0 11/14

E

33-251 -- 393349.3 752752.8 SALEM 3 699-709 -27 -28 -32 -32 -31 -32 -1 11/20

E

33-305 30-01083 394013 752458 PENNS GROVE 14 381-457 -13 -14 -16 -- -16 -15 1 11/24

A

33-918 34-01512 392802 753208 TAYLORS BRIDGE 12 1115-1135 -- -- -- -- -- -44 -- 11/21

D

33-933 30-12200 393846.2 751908 WOODSTOWN 48 535-670 -- -- -- -- -33 -31 2 11/06

B

33-934 34-04055 392743.7 753147.2 TAYLORS BRIDGE 16 826-836 -- -- -- -- -60 -70 -10 11/21

E

P10105 -- 395342 751020 PHILADELPHIA 9 -101 -9 -- -7 -4 -4 -6 -2 11/07

E

Delaware wells

Cc55-17 000137 394008 753529 WILMINGTON SOUTH 55 89-115 -- -- -- -- -10 -12 -2 12/15

E

Cd42-17 040146 394133 753310 WILMINGTON SOUTH 45 100-125 -- -- -- -- -28 -28 0 12/22

E

Cd42-41 197105 394136 753302 WILMINGTON SOUTH 46 100-110 -- -- -- -- -- -20 -- 10/31

E

Cd43-72 196848 394135 753215 WILMINGTON SOUTH 16 87-97 -- -- -- -- -- -12 -- 11/25

E

Cd51-08 010060 394006 753453 WILMINGTON SOUTH 15 65-82 -- -- -- -- -- -16 -- 12/15

E

Cd52-27 033721 394058 753349 WILMINGTON SOUTH 12 128-141 -- -- -- -- -- 1 -- 12/15

E

Db52-27 035417 393539 754335 ST GEORGES 73 70-90 -- -- -- -- 59 68 9 12/22

E

Db53-43 172122 393557 754258 ST GEORGES 70 53-61 -- -- -- -- -- 67 -- 12/18

E

Db53-45 172124 393549 754257 ST GEORGES 70 90-105 -- -- -- -- -- 66 -- 12/18

E

Dc14-77 052445 393952 753610 WILMINGTON SOUTH 62 80-112 -- -- -- -- -- -4 -- 12/23

E

Dc15-16 035665 393954 753533 WILMINGTON SOUTH 45 99-109 -- -- -- -- -- 3 -- 12/15

E

Dc22-23 043067 393824 753842 NEWARK EAST 70 90-130 -- -- -- -- -- -12 -- 12/23

E

Dc23-02 035081 393839 753706 WILMINGTON SOUTH 58 129-154 -- -- -- -- -- -37 -- 12/23

E
Appendix 8 117

Appendix 8. Water-level data for wells screened in the Middle and undifferentiated Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued[--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS 

well 

number

New 

Jersey 

permit 

number

Latitude Longi- tude USGS quadrangle

Altitude 

of land 

surface 

(ft)

Screened 

interval 

(ft)

Water-level altitude (ft) 1998-2003 

waterlevel 

change 

(ft)

2003 

measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

Dc24-70 156751 393823 753613 WILMINGTON SOUTH 8 100-200 -- -- -- -- -- -32 -- 12/23 EDc31-10 030005 393746 753939 NEWARK EAST 69 108-138 -- -- -- -- -- 19 -- 12/23 EDc32-35 177379 393721 753823 ST GEORGES 55 117-142 -- -- -- -- -- -12 -- 12/28 EDc34-06 010231 393755 753648 WILMINGTON SOUTH 25 183-188 -- -- -31 -- -36 -39 -3 12/12 EEa35-21 102148 393241 754544 ELKTON 55 99-162 -- -- -- -- -- 31 -- 12/22 EEa35-38 102438 393248 754546 ELKTON 60 102-152 -- -- -- -- -- 39 -- 12/22 EEb23-24 010404 393316 754215 ST GEORGES 60 432-436 -- -- -- -- -46 -45 1 12/12 EEb51-19 161819 393026 754416 ST GEORGES 56 600-740 -- -- -- -- -- -31 -- 12/09 EEb55-08 098124 393037 754043 ST GEORGES 58 400-420 -- -- -- -- -29 -31 -2 12/28 EEb55-09 098123 393039 754050 ST GEORGES 56 400-420 -- -- -- -- -- -34 -- 12/28 EEc32-03 Ec3203 393241 753802 ST GEORGES *8 318-348 -- -- -35 -- -31 -30 1 01/12 EEc41-17 156288 393106 753901 ST GEORGES 52 422-452 -- -- -- -- -- -26 -- 12/29 EEc52-23 099469 393048 753814 ST GEORGES *40 482-532 -- -- -- -- -24 -26 -2 12/29 EEc52-24 101153 393037 753812 ST GEORGES 15 424-454 -- -- -- -- -- -33 -- 12/29 EEc52-25 099470 393053 753818 ST GEORGES *30 400-450 -- -- -- -- -24 -26 -2 12/29 EEc52-26 105156 393025 753805 ST GEORGES 50 436-466 -- -- -- -- -- -32 -- 12/28 EEc53-17 157984 393033 753749 ST GEORGES 50 420-470 -- -- -- -- -33 -32 1 12/28 EFb11-11 157176 392923 754428 MIDDLETOWN 70 257-297 -- -- -- -- -25 -24 1 12/23 EFb14-11 096841 392929 754118 MIDDLETOWN 40 410-443 -- -- -- -- -- -48 -- 12/29 EFb14-15 157833 392930 754116 MIDDLETOWN 30 410-440 -- -- -- -- -- -58 -- 12/29 EFb33-24 039685 392710 754257 MIDDLETOWN 60 460-536 -- -- -- -- -36 -43 -7 12/23 EFc11-25 157831 392918 753944 MIDDLETOWN 40 374-424 -- -- -- -- -26 -32 -6 12/29 EFc51-27 099806 392531 753906 MIDDLETOWN 50 692-733 -- -- -- -- -27 -34 -7 12/23 E

Maryland wells

CE Ce 56 CE-81-0466 393026 755231 ELKTON 38 116-121 -- -- -- -- 6 8 2 11/25 ECE Ee 29 CE-73-2266 392403 755217 CECILTON 75 515-525 -- -- -- -- -3 -6 -3 11/25 E

Appendix 9

Water-level data for wells screened in the Lower Potomac-Raritan-Magothy aquifer, 

New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.
120 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 9. Water-level data for wells screened in the Lower Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longi- tude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water- level change (ft) 2003 mea- surement date Shut- down pe- riod 1978 1983 1988 1993 1998 2003 05-123 31-05321 395904.6 750008.8 CAMDEN 25 226-261 -10 -12 -16 -16 -16 -12 4 11/07

E

05-125 31-03835 395928.1 745919.8 MOORESTOWN 79 239-281 -11 -15 -16 -19 -17 -15 2 11/07

E

05-129 27-04844 395945 750010 CAMDEN 60 -174 -- -- -- -- -- -0 -- 11/13

B

05-130 31-04576 400000.2 750039.5 FRANKFORD 70 167-198 -4 -3 -14 -12 -14 -9 5 11/07

A

05-146 27-03080 400122.5 745805.1 BEVERLY 25 89-130 3 2 0 -- -- 5 -- 11/12

E

05-228 31-08923 395631 745856.4 MOORESTOWN 40 440-500 -47 -51 -60 -53 -55 -38 17 12/03

E

05-262 -- 395524 745024 MOUNT HOLLY 72 1125-1145 -48 -58 -60 -61 -52 -47 5 10/31

E

05-274 31-03674 395841 745904 MOORESTOWN 40 241-262 -20 -26 -29 -31 -28 -25 3 11/07

E

05-645 -- 400010 745215 BRISTOL 40 431-441 -31 -35 -41 -41 -38 -30 8 10/31

E

05-648 -- 400102.5 745407.8 BEVERLY 34 306-316 -20 -23 -29 -28 -29 -19 10 11/05

E

05-746 31-12925 395726.5 745915 MOORESTOWN 13 389-450 -29 -41 -43 -43 -38 -32 6 11/28

D

05-819 31-19212 395607.1 745645.4 MOORESTOWN 20 499-590 -- -59 -68 -65 -- -47 -- 11/17

E

05-823 -- 395617.5 745516.4 MOORESTOWN 35 590-640 -48 -62 -75 -64 -50 -50 0 11/17

B

05-1075 31-26130 395633.1 745557 MOORESTOWN 40 528-644 -- -- -63 -61 -- -43 -- 11/17

E

07-12 31-02687 395221.8 750635.2 RUNNEMEDE *31 334-359 -57 -60 -52 -50 -41 -36 5 11/10

B

07-111 31-03456 395724.7 750518.7 CAMDEN 9 139-170 -- -- -26 -- -10 -7 3 11/07

E

07-121 -- 395251.3 745936 MOORESTOWN *76 672-729 -89 -98 -107 -- -59 -73 -16 11/10

E

07-130 31-05077 395353 745707 MOORESTOWN 71 743-748 -67 -75 -80 -79 -52 -59 -7 11/07

E

07-144 31-00684 395441.2 750101 CAMDEN 39 491-527 -60 -64 -67 -65 -49 -42 7 11/07

E

07-157 31-05033 395558.2 750030.2 CAMDEN 45 376-427 -- -- -- -- -43 -37 4 11/07

E

07-163 31-04051 395609.8 750027.5 CAMDEN 39 371-453 -46 -51 -53 -45 -36 -35 1 11/07

E

07-172 31-04799 395428.1 750507.2 CAMDEN 10 218-312 -46 -40 -37 -38 -- -35 -- 11/13

E

07-175 31-00079 395515.2 750436.7 CAMDEN *21 266-306 -55 -52 -51 -- -38 -31 7 11/13

E

07-188 31-05950 394950.1 745857.3 CLEMENTON 65 934-986 -- -- -89 -97 -62 -69 -7 11/12

B

07-221 -- 395356.2 750737 PHILADELPHIA 11 162-170 -39 -35 -30 -26 -22 -18 4 11/07

E

07-273 31-04756 395032 750344.4 RUNNEMEDE *54 612-712 -78 -77 -83 -82 -61 -59 2 11/10

A

07-278 31-02434 395238.1 750314 CAMDEN 65 452-594 -72 -76 -82 -- -50 -56 -6 11/10 --
Appendix 9 121

Appendix 9. Water-level data for wells screened in the Lower Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued[--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS

well 

number

New 

Jersey 

permit 

number

Latitude Longi- tude USGS quadrangle

Altitude 

of land 

surface 

(ft)

Screened 

interval 

(ft)

Water-level altitude (ft)

1998-2003 

waterlevel 

change 

(ft)

2003 

measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

07-283 31-04282 395246 750433 CAMDEN 24 445-455 -62 -64 -64 -61 -48 -43 5 11/07 E07-284 31-05054 395247.3 750434 CAMDEN *30 -484 -- -- -66 -61 -45 -44 1 11/10 E07-302 31-02130 395319.2 750138.8 CAMDEN *21 523-572 -76 -83 -89 -95 -62 -55 7 11/13 B07-320 31-04642 395650 750310.4 CAMDEN 69 245-285 -33 -36 -34 -32 -26 -18 8 11/12 B07-335 31-02915 395719.6 750222 CAMDEN 61 243-278 -33 -35 -35 -34 -29 -27 2 11/12 A07-341 31-01417 395755.2 750408.9 CAMDEN 45 115-145 -22 -20 -19 -21 -10 -7 3 11/12 E07-350 51-00064 395802.7 750118.8 CAMDEN 12 232-257 -- -- -- -- -23 -18 5 11/12 E07-368 51-00053 395847 750346.5 CAMDEN 10 106-126 -13 -22 -17 -- -- -12 -- 11/17 D07-372 31-05110 395853.5 750205.9 CAMDEN 68 195-230 -- -- -23 -20 -16 -13 3 11/12 E07-390 51-00050 395943.2 750211.2 CAMDEN 6 93-118 -9 -8 -11 -9 -8 -6 2 11/17 E07-412 31-09560 394922 745629 CLEMENTON 149 1082-1092 -62 -72 -78 -80 -58 -58 -0 11/07 E07-523 31-12315 395151.6 750531.8 RUNNEMEDE *81 458-557 -56 -58 -61 -58 -43 -38 5 11/10 B07-528 31-08526 395836.7 750302.2 CAMDEN 20 140-180 -23 -28 -32 -22 -14 -13 1 11/17 E07-541 31-15720 395611 750545 CAMDEN 20 215-253 -- -34 -31 -26 -19 -14 5 11/12 E07-547 31-18944 395731.7 750456.3 CAMDEN 35 155-195 -- -- -32 -- -12 -10 2 11/07 E07-597 31-20270 395718.1 750513 CAMDEN 11 136-176 -- -- -30 -- -11 -8 3 11/07 E07-723 31-28896 395401.3 750317.4 CAMDEN 64 418-470 -- -- -- -- -49 -43 6 11/13 A07-932 31-43420 395759.6 750415.3 CAMDEN 29 125-145 -- -- -- -- -11 -7 4 11/12 E07-933 31-45075 395808 750117 CAMDEN 28 177-182 -- -- -- -- -22 -19 3 10/16 E07-965 31-26140-0 395936 750200 CAMDEN 19 85-105 -- -- -- -- -12 -7 5 11/14 E07-1006 31-58576 395755.4 750230.9 CAMDEN 33 250-260 -- -- -- -- -- -16 -- 11/14 E07-1055 31-59303 395817.8 750334.6 CAMDEN 67 210-220 -- -- -- -- -- -9 -- 11/14 E07-1085 39-59128 395406 750337 CAMDEN 51 355-445 -- -- -- -- -- -40 -- 11/13 B15-133 30-01222 394510 752243 MARCUS HOOK 20 317-367 -- -- -2 -4 -4 1 5 11/12 E15-139 30-01223 394608 752134 BRIDGEPORT 7 301-345 -10 -10 -11 -1 -11 -9 2 11/14 E15-282 31-07056 394913.2 751103.9 WOODBURY 55 388-450 -30 -- -34 -32 -51 -19 32 12/08 C15-308 -- 395041.4 751237.7 WOODBURY 10 231-271 -14 -15 -19 -41 -26 -13 13 12/03 E
122 Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003 Appendix 9. Water-level data for wells screened in the Lower Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued [--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet] USGS well number New Jersey permit number Latitude Longi- tude USGS quadrangle Altitude of land surface (ft) Screened interval (ft) Water-level altitude (ft) 1998-2003 water- level change (ft) 2003 mea- surement date Shut- down pe- riod 1978 1983 1988 1993 1998 2003 15-312 51-00063 395106.8 750944.7 WOODBURY 20 322-372 -58 -55 -56 -45 -52 -29 23 12/04

D

15-321 31-00028 395220.1 750851.6 WOODBURY 13 237-277 -- -57 -61 -- -- -34 -- 11/17

B

15-331 31-04259 394954.3 750908.1 WOODBURY 35 405-457 -44 -47 -53 -49 -42 -34 8 11/21

B

15-349 -- 394650 752315 MARCUS HOOK 6 170-220 -5 -5 -8 -5 -6 -4 2 11/12

E

15-357 -- 394957 751736 BRIDGEPORT 4 -105 -4 -4 -- -- -- -6 -- 11/25

E

15-398 30-02016 394935 751937 BRIDGEPORT 1 50-60 -- -- -2 -1 -2 -0 2 11/23

E

15-430 31-17788 395154.5 750942 WOODBURY 15 256-328 -- -49 -53 -- -- -19 -- 11/13

D

15-615 30-03530-9 394637 751915 BRIDGEPORT 29 378-388 -- -- -15 -16 -15 -12 3 11/25

E

15-618 30-03531-7 394804 751932 BRIDGEPORT 7 230-240 -- -- -7 -7 -8 -5 3 11/23

E

15-671 -- 394957 750529 RUNNEMEDE 35 650-670 -- -- -69 -69 -53 -47 6 11/18

E

15-678 30-03625 394946 751611 BRIDGEPORT 9 194-204 -- -- -8 -5 -8 -5 3 12/04

E

15-680 30-03602 395038 751604 BRIDGEPORT 9 186-196 -- -- -5 -6 -5 -2 3 12/04

E

15-712 30-04347 394808 751723 BRIDGEPORT 7 275-290 -- -- -11 -11 -11 -8 3 11/17

E

15-738 30-03612-7 394948 751523 BRIDGEPORT 5 188-198 -- -- -9 -9 -9 -6 3 12/04

E

15-742 31-25266-4 394652 751003 WOODBURY 84 757-777 -- -- -37 -37 -32 -26 6 11/17

E

15-770 31-26237-6 395202 751114 WOODBURY 10 204-224 -- -- -25 -21 -17 -12 5 11/17

E

15-772 31-26242 395206 751117 WOODBURY 10 196-216 -- -- -- -- -- -12 -- 11/17

E

15-778 31-26245 395222 751118.8 WOODBURY 5 170-190 -- -- -- -- -17 -13 4 11/17

E

15-1004 -- 394421 750603 PITMAN EAST 80 1038-1206 -- -- -- -63 -55 -49 6 11/17

E

15-1125 30-04112 394937 751727 BRIDGEPORT 15 186-196 -- -- -- -3 -4 -3 1 11/25

E

15-1201 30-11328 395024 751449 WOODBURY 12 235-245 -- -- -- -- -- -5 -- 12/04

E

15-1487 30-12609 394433 752011 WOODSTOWN 104 495-525 -- -- -- -- -15 -16 -1 11/10

A

33-86 30-01139 394557 752522 MARCUS HOOK 13 169-189 -10 -12 -11 -17 -14 -12 2 11/12

E

33-330 50-00098 394205 752658.1 PENNS GROVE 16 -394 -38 -15 -23 -40 -34 -34 -0 11/24

B

33-335 30-01133 394211.3 752743.3 PENNS GROVE *13 270-430 -- -30 -33 -- -- -32 -- 11/24

E

33-458 -- 392751 753209.2 TAYLORS BRIDGE *11 1112-1132 -- -33 -- -41 -42 -45 -3 11/21

E

P10103 -- 395314 751009 PHILADELPHIA 9 242-247 -27 -- -22 -18 -16 -10 6 11/07

E
Appendix 9 123

Appendix 9. Water-level data for wells screened in the Lower Potomac-Raritan-Magothy aquifer, New Jersey and Delaware Coastal Plain and vicinity, 1978–2003.—Continued[--, data not available; bold type indicates that the water-level hydrograph is included in the report; *, Altitude of land surface was modified from 1998 report; Shutdown period: A, 1 hour; B, greater than 1 hour and less than 12 hours; C, greater than 12 hours and less than 24 hours; D, greater than 24 hours and less than 1 week; E, greater than 1 week; USGS, US Geological Survey; ft, feet]

USGS

well 

number

New 

Jersey 

permit 

number

Latitude Longi- tude USGS quadrangle

Altitude 

of land 

surface 

(ft)

Screened 

interval 

(ft)

Water-level altitude (ft)

1998-2003 

waterlevel 

change 

(ft)

2003 

measurement 

date

Shutdown 

period 1978 1983 1988 1993 1998 2003

P10113 -- 395408 751039 PHILADELPHIA 6 -- -7 -- -5 -4 -3 -3 0 11/07 EP10114 -- 395445 750830 PHILADELPHIA 10 122-167 -- -- -8 -6 -6 -5 1 11/07 E

Delaware wells

Cc45-01 10029 394110 753542 WILMINGTON SOUTH 70 187-197 -- -- -- -- -- -8 -- 12/22 --Cc45-02 10030 394059 753533 WILMINGTON SOUTH 65 211-221 -- -- -- -- -- -8 -- 12/22 --Cc45-27 159723 394114 753545 WILMINGTON SOUTH 70 295-305 -- -- -- -- -29 -11 18 12/22 ECd51-26 190390 394020 753448 WILMINGTON SOUTH 15 182-242 -- -- -- -- -- -38 -- 12/22 EDa43-02 42911 393608 754703 ELKTON 70 228-247 -- -- -- -- -16 6 22 12/22 EDa43-03 50306 393607 754659 ELKTON 69 222-250 -- -- -- -- -- 6 -- 12/22 --Db15-05 8006 393917 754016 NEWARK EAST 20 215-306 -- -- -- -- -1 0 1 12/15 --Dc31-67 190145 393746 753939 WILMINGTON SOUTH 65 415-435 -- -- -- -- -- -67 -- 12/23 EDb33-17 10398 393734 753711 NEWARK EAST 48 185-189 -- -- -- -- -40 -51 -11 12/12 EDc33-18 190389 393752 753754 NEWARK EAST 42 610-720 -- -- -- -- -- -77 -- 01/06 EDc34-05 Dc3405 393755 753648 WILMINGTON SOUTH 28 574-599 -- -- -68 -65 -64 -74 -10 12/12 EEa14-33 95617 393422 754648 ELKTON 70 322-372 -- -- -- -- -- -53 -- 12/29 EEa24-07 96500 393314 754649 ELKTON *40 332-352 -- -- -- -- -51 -42 9 12/22 EEa25-07 48857 393314 754529 ELKTON 58 324-412 -- -- -- -- -- -40 -- 12/22 --Ea35-31 193104 393248 754551 ELKTON 60 830-870 -- -- -- -- -- -34 -- 12/22 --Eb23-25 10405 393309 754215 ST GEORGES 60 600-604 -- -- -49 -52 -63 -36 27 12/12 EEc15-27 36504 393428 753538 DELAWARE CITY 13 692-722 -- -- -- -- -179 -178 1 12/22 --Ec15-28 37981 393445 753509 DELAWARE CITY 11 707-737 -- -- -- -- -- -187 -- 12/22 EEc32-07 Ec32-07 393209 754920 ST GEORGES 9 586-596 -- -- -93 -87 -101 -102 -1 01/12 EFb33-25 39676 392708 754257 MIDDLETOWN 60 800-846 -- -- -- -- -37 -42 -5 12/23 --Fb11-09 157658 392924 754418 MIDDLETOWN 70 830-870 -- -- -- -- -- -37 -- 12/23 --

Maryland wells

CE Bf 82 Zz63151 393537 754920 ELKTON 70 120-125 -- -- -- -- 6 7 1 12/30 ECE Ce 55 Zz63155 393241 755002 ELKTON 55 370-375 -- -- -- -- -13 -9 4 12/30 E
For additional information, write to:

Director

U.S. Geological Survey

New Jersey Water Science Center

Mountain View Office Park

810 Bear Tavern Rd., Suite 206

West Trenton, NJ 08628

or visit our Web site at:

http://nj.usgs.gov/
DePaul and others—Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain, 2003—Scientific Investigations Report 2008-5145

Printed on recycled paper