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EPA estimates of the Area of Dry Land Close to Sea Level in Virginia

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The table below provides EPA's estimated uncertainty range of the area of dry land below particular elevations, in square kilometers. The uncertainty range considers the varying accuracy of the elevation data that the EPA study used. For example, Accomack County has between 56 and 111 square kilometers of dry land within one meter above spring high water

The majority of land close to sea level is wetland rather than the dry land depicted in this table, so the EPA study also provided a table of the area of Virginia wetlands vulnerable to sea level rise. A printer-friendly file with the area of dry land and wetland vulnerable to sea level rise in Virginia is also available.

Low and High Estimates of the Area of Land Close to Sea Level
by Jurisdiction: Virginia1 (square kilometers)
Jurisdiction

Meters above Spring High Water
0.5

1.0

2.0

3.0

5.0
low
high

low
high

low
high

low
high

low
high

          --------------Cumulative (total) amount of Dry Land below a given elevation----------
Eastern Shore

21
63

56
111

137
204

221
279

362
416
Accomack

13
41

37
78

98
149

160
192

233
257
Northampton

7.4
22

20
33

39
55

61
87

129
159
Northern Virginia

0
5.1

2.8
10

9.7
20

17
29

35
49
Arlington

0
0.2

0.1
0.5

0.5
1.3

0.8
2.6

3.4
5
Alexandria

0
0.4

0.3
0.9

0.9
1.7

1.5
2.5

2.9
4
Fairfax

0
2

1.1
3.9

3.8
7.6

6.6
11

12
18
Prince William

0
1

0.5
2

1.9
3.9

3.3
5.5

6.4
8.8
Rappahannock Area

0
3.3

1.8
6.5

6.4
14

11
26

32
49
Stafford

0
1.4

0.8
2.7

2.7
5.4

4.6
8.1

9.5
14
Fredericksburg

0
0.1

0.04
0.1

0.1
0.2

0.2
0.3

0.4
0.5
King George

0
2.7

1.5
5.4

5.2
11

9
22

27
43
Spotsylvania

0
0.09

0.05
0.2

0.2
0.3

0.3
0.5

0.5
0.8
Caroline

0
0.4

0.3
0.9

0.9
1.8

1.5
2.8

3.4
5.2
Northern Neck

0.1
22

11
43

42
92

74
190

240
378
Westmoreland

0
4.7

2.4
9.3

9
21

16
53

69
112
Richmond

0
4.6

2.4
8.9

8.7
18

15
32

38
57
Northumberland

0
5.9

2.8
11

11
24

19
64

85
141
Lancaster

0.1
7

3.6
14

14
28

24
42

48
68
Middle Peninsula
9.1
42

33
89

108
190

186
268

319
392
Essex

0
3.8

2
7.3

7.1
15

12
28

34
53
King and Queen

0
2.9

1.7
5.7

5.5
12

9.6
19

23
33
King William

0
1.6

0.9
3.2

3.1
8.4

5.4
18

23
36
Middlesex

0.2
3.4

2
6.8

7
14

13
23

28
39
Gloucester

4.1
16

13
33

41
67

67
84

96
111
Mathews

4.7
15

13
33

44
73

79
97

115
121
Hampton Roads

24
91

78
200

264
469

519
848

1215
1424
James City

0.1
3.8

2
7.2

7
14

12
22

27
39
York

1.4
6

5
13

16
28

28
37

44
51
Newport News

2.2
6.9

6
11

13
18

19
25

35
42
Poquoson

1.4
4.5

4
8.8

11
16

16
17

17
17
Hampton

1.9
5.9

5
18

25
45

51
74

95
102
Surry

0
1.4

1
2.7

2.7
5.3

4.6
7.1

8.1
11
Isle of Wight

0.2
3.4

2
6.2

6
12.8

10
22

27
42
Norfolk

1.9
5.8

5
17

24
42

52
91

122
128
Virginia Beach

9.3
33

30
69

94
163

185
273

378
418
Suffolk

0.7
4.3

3.1
7.1

7.5
15

13
31

47
73
Portsmouth

1.2
3.9

3.5
9.6

13
22

27
45

63
70
Chesapeake

3.5
12

11
31

45
87

100
205

353
430
Other Jurisdictions

0
9.9

5.7
19

19
40

32
67

81
122
Charles City

0
3.2

1.8
6.3

6.2
13

11
23

28
43
Chesterfield

0
1.3

0.8
2.6

2.5
4.8

4.3
6.2

7
8.9
Colonial Heights

0
0.04

0.02
0.1

0.07
0.12

0.12
0.15

0.16
0.24
Hanover

0
0.02

0.02
0.05

0.05
0.2

0.1
0.4

0.5
0.7
Henrico

0
0.8

0.5
1.5

1.5
2.8

2.5
3.7

4.2
6.3
Hopewell

0
0.4

0.2
0.8

0.7
1.3

1.2
1.6

1.7
2.2
New Kent

0
2.1

1.2
4.1

4
9.4

6.9
17

22
34
Petersburg

0
0

0
0

0
<0.01

<0.01
0.01

0.01
0.03
Prince George

0
1.9

1.1
3.8

3.7
8.1

6.3
14

17
26
Williamsburg

0
0.05

0.03
0.1

0.1
0.2

0.2
0.3

0.4
0.6
Statewide

54
236

189
479

585
1029

1060
1707

2283
2830

1. Low and high are an uncertainty range based on the contour interval and/or stated root mean square error (RMSE) of the input elevation data.  Calculations assume that half of the RMSE is random error and half is systematic error. For a discussion of these calculations, see the EPA report.