SUSSEX

CAROLINE

Suffolk

ESSEX

SURRY

SOUTHAMPTON

ACCOMACK

HANOVER

Chesapeake

KING AND QUEEN

HENRICO

YORK

ISLE OF WIGHT

NEW KENT

KING WILLIAM

Virginia Beach

RICHMOND

DINWIDDIE

PRINCE GEORGE

GLOUCESTER

WESTMORELAND

CHESTERFIELD

CHARLES CITY

STAFFORD

PRINCE WILLIAM

KING GEORGE

JAMES CITY

MIDDLESEX

GREENSVILLE

LANCASTER

NORTHUMBERLAND

NORTHAMPTON

SPOTSYLVANIA

MATHEWS

Norfolk

Newport News

Petersburg

Poquoson

Portsmouth

Hopewell

Franklin

Colonial Heights

Williamsburg

Fredericksburg

Emporia

Hampton

Richmond

616

218

95

95

17

606

626

3

235

234

207

301

602

35

40

156

626

10

250

460

33

60

295

76

64

95

85

95

301

58

35

186

35

305

305

158 158

258

258

13 17

13

13

32

17

17

158

460

460

158

615

168

615

264

64

60

164

258

58

189

10

626

620

32

617

626

360

360

17

17

17

258

30

621

360

200

3

3

3 33

33

14

14

301

301

4

5

6

2

13

13

13

113

413

MARYLAND

MARYLAND

NORTH CAROLINA

CHESAPEAKE BAY

IMPACT CRATER

Potomac

River

Chowan

River

James

York

River

Rappahannock

River

Mobjack

Bay

River

Piankatank

Mattaponi

Pamunkey

Chickahominy

Appomattox

River

Blackwater

Nottoway

River

Elizabeth

North Landing

Meherrin

River

Rowanty Cr.

VIRGINIA EASTERN SHORE

NORTHERN NECK

MIDDLE PENINSULA

YORK-JAMES PENINSULA

SOUTHEASTERN VIRGINIA

Base from U.S. Geological Survey, 1973

State of Virginia, 1:500,000

River

River

River

River

River

River

Little

Creek

Aquifer

margin

Aquifer margin

Aquifer

margin

River

36

3730'

3830'

37

38

7730' 7722'30"

3837'30"

3815'

3822'30"

3745'

3752'30"

3737'30"

3722'30"

387'30"

3715'

377'30"

3630'

3645'

3652'30"

3637'30"

3622'30"

3615'

367'30"

7715' 777'30" 7630' 7622'30" 7615' 76 77 7'30"  7652'30"

Hydrogeologic section areas

7645' 7637'30" 7530' 75 75 22'30" 52'30" 7545' 75 76 37'30" 

U.S. DEPARTMENT OF THE INTERIOR

U.S. GEOLOGICAL SURVEY

SCIENTIFIC INVESTIGATIONS REPORT 2013–5116

Locations of boreholes and hydrogeologic section areas—PLATE 1

McFarland, E.R., 2013, Sediment distribution and hydrologic conditions of the 

Potomac aquifer in Virginia and parts of Maryland and North Carolina

Prepared in cooperation with the

VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY 

0

0

10 20 MILES

Locations of Boreholes and Hydrogeologic Section Areas of the Potomac Aquifer 15 30 KILOMETERS

in Virginia and Parts of Maryland and North Carolina

By

E. Randolph McFarland

2013

Location of the Chesapeake Bay impact crater is from Powars and Bruce (1999).

EXPLANATION

Borehole location and number

Location of the study area in Virginia, Maryland, and North Carolina

VA

MD

NC

CHESAPEAKE

BAY

Albemarle

Sound

ATLANTIC

OCEAN

CH Da 18

CH Ee 96

CH Bg 18

CH Ce 57

CH Bf 146

CH Be 57

CH Bd 52

SM Dd 72 

SM Df 84

CA Fd 85

SM Bc 39

59K 19

59M 10

58L 8 58L 7

59L 6

60L 20

60L 19 60L 21

59M 8 60M 1 60L 30

60L 22

60L 28

58K 11

58J 7 58J 9

58J 8 58J 5

59K 18 59K 27

59K 26 59K 17

59H 4

60J 7

58K 19

58K 6

58K 20

58J 11

58H 9

60J 1

60G 6

58H 5

58H 4

58H 10

58H 11

59J 6

59J 5

59J 13

59D 25

57F 16

56F 61

56F 42

55F 20

57F 3

57F 4 57F 5

57F 26 57F 6

56F 52

56G 6

56G 68

56G 61

56G 65

56G 66

56H 38

56H 39

56F 16

56F 8

57F 7

57F 2

57F 36

57F 30

57F 8

57E 10

57D 17 57D 3

57D 9

57D 15

57D 16

57D 20

57C 32

59D 2

57D 29

57D 30 58D 32

58D 9

58D 6 58D 7

59E 31

59E 32

59D 23

59D 20

59E 5

58F 90

58F 91

58F 95 58F 81

58F 83

58F 84

58F 85

58F 86

58F 87

58F 88

58F 92

58F 127

58F 3

58F 50

58F 183

58F 82

58F 18

58C 2

58C 44 58C 67

58C 7

57C 17 57C 15

58C 68

58C 34

59C 13

58C 69

58C 51

58C 3

58C 17

58C 10

57B 7

57B 6

58B277

58B115

58C 11

57C 22

57C 12 58C 16

58C 50

58B 11

58B 12

58B 10

58C 1

58B 1

58B270

57B 1

58A 76

58A 2

57B 2

57C 16

58C 8 58C 76

58C 46

58C 70

60C 53

60C 7

59C 39

59C 34

59C 37 59C 38

59C 36

60C 40

59C 2

59C 28

59C 32

59C 7

59C 33

59C 1

59C 14

60C 76

59D 1

61C 1 63C 1

61C 2

61C 3

61C 4

61D 4 61D 2

61D 5

60B 19

60B 3

60B 20

60B 2

60C 6

61B 11

60C 4

60C 25

61A 15

61A 12 61A 11

61A 18 61A 19

61A 14

61A 13

D10A

B10R

C15S

F13W

E13M

D12V

C12W

58A 75

B20U 53A 6

B22Y

53A 4

53A 3

53B 9

53B 3

54A 1

54B 2 54B 1 54B 6

54B 26

54B 7

54B 16 54B 18

54B 25

54B 24

54B 32

54B 34

54B 33

54A 2

54A 3

54A 4

52A 1

52A 2

C22H

C22Q

H22I

H20S

F22B

D18M

G19B

H16X

C16Q

ABCDEF

C’

D’

E’

F’

B’

A’

55C 12

57B 3

56B 1

56B 13

56B 9

56A 9 56A 11

56A 10

56A 1

55B 26 56B 12

55B 28

57A 6

57A 1

55B 59

55A 1

55A 3

55B 65

55B 74

55B 63

55B 60

51B 4

51B 3

51B 1

52B 8

52B 3

54D 5

54D 1

53D 3

54E 7

53D 1

51D 1

53D 5

53D 9

54C 4

54C 2

54C 9 53C 1

55D 5

55E 7

55E 1

52E 2

52F 5

52F 18

52F 7

52F 8

51F 7

51F 8

52F 6

52F 9

53G 15

53G 13

53H 9

53J 7

53H 13

53G 17

53G 21

52G 29

52G 26

52H 5

52J 22

52J 17

52J 20

52K 6

52K 11

52K 9

52L 10

52L 4

51J 9

52J 35

51J 11

51J 10

52J 50

52J 30

52J 52

52J 49

52H 3

52H 8

52H 9

51H192

51H 5

52J 4

52J 12

52J 53

52J 25

52J 18

52J 26

52J 23

51J 8

51J 12

52J 48

52H 17

52H 15

53G 2

51G 3

52G 24

54H 13 54H 11

54J 4

53J 20

53J 19

53J 21

53J 17

53J 16

53J 23

53K 18

56H 25

56H 48

56J 6

56J 11

57J 3

57H 20

57H 6

57G 1 57G104

57G1O5

57G 21

56J 26

56J 5

56J 13

56J 4

56J 12

56J 36

56J 34 56J 38

56H 46

56H 42

55J 13 55J 12

55J 15

55K 6

56J 16

55G 4 

54G 10

55H 1

55H 23

52J 54

52K 10

52K 14

53K 21

54K 17

54K 16 53K 17

53K 22

53L 4 53L 2 53L 6

53L 5

53L 3

53P 8

53P 4

52P 8

52P 9

52N 15

52N 16

51N 1

52M 2

51Q 23

51P 4

51Q 20

51Q 19

51Q 1

53Q 9

56N 8

55P 5

55N 2

55P 3

55Q 6

55P 17

54P 3

54Q 9

54Q 10

54R 3

54Q 11

57P 3 57P 2

57P 1

58N 7

57M 5

57M 13

56M 9 56M 19

56M 18

56M 17

56M 10

56N 7

SO Ce 95

SO Dd 47

59K 19

66M 1