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1971
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1971
1974
1978
1979
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1984
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1989
1990
1991
1992
1993
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1999
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1971
1974
1978
1979
1980
1981
1984
1985
1986
1987
1989
1990
1991
1992
1993
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2000
2001
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2020
2021
2022
2023
Quadrangle
2021
2022
2023
(001) Conowingo Dam, Md.-Pa.
0.00
0.00
0.00
(002) Aberdeen, Md.
26.40
28.94
31.54
(003) Havre de Grace, Md.
3,147.58
3,255.21
3,291.52
(004) North East, Md.
34.35
34.71
33.32
(005) Elkton, Md.-Del.
0.00
0.00
0.00
(006) White Marsh, Md.
74.76
50.00
6.90
(007) Edgewood, Md.
442.46
350.22
104.57
(008) Perryman, Md.
286.98
172.57
154.54
(009) Spesutie, Md.
1,302.75
1,268.25
1,133.99
(010) Earleville, Md.
86.62
121.87
7.56
(011) Cecilton, Md.
1.01
1.16
1.08
(012) Baltimore East, Md.
0.30
0.68
1.09
(013) Middle River, Md.
263.14
186.39
133.41
(014) Gunpowder Neck, Md.
591.87
269.69
57.75
(015) Hanesville, Md.
25.63
24.44
8.36
(016) Betterton, Md.
44.53
41.87
0.23
(017) Galena, Md.
15.40
9.97
0.51
(018) Curtis Bay, Md.
18.48
16.68
10.39
(019) Sparrows Point, Md.
90.01
76.68
92.72
(020) Swan Point, Md.
33.16
34.21
30.35
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Areas in Hectares. "nd" indicates that the area was not mapped. "pd" indicates that the area was not fully mapped.
2023 SAV Totals are Preliminary.