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Reserve Designation Dates, Acreage and Biogeographic Regions

Reserve
Year
Acres
Sq. Mi
Sq. Km
Region
South Slough, OR
1974
4,779
7.0
18.2
Columbian (7)
Sapelo Island, GA
1976
6,110
9.5
24.7
Carolinian (7)
Rookery Bay, FL
1978
110,000
171.9
445.2
West Indian (10)
Apalachicola Bay, FL
1979
246,000
385.6
998.6
Louisianian (11)
Elkhorn Slough, CA
1979
1,400
2.2
5.6
Californian (15)
Padilla Bay, WA
1980
11,000
16.7
43.3
Columbian (19)
Naragansett Bay, RI
1980
4,259
6.7
17.2
Virginian (3)
Old Woman Creek, OH
1980
571
0.9
2.3
Great Lakes (21)
Jobos Bay, PR
1981
2,883
4.4
11.3
West Indian (9)
Tijuana River, CA
1982
2,513
3.9
10.2
Californian (14)
Hudson River, NY
(4 components)
1982
4,838
7.6
19.6
Virginian (3)
North Carolina
(4 components)
1985,
1991
10,000
15.6
40.5
Carolinian (6)
Wells, ME
1986
2,250
2.5
6.5
Acadian (2)
Chesapeake Bay, MD
(3 components)
1985,
1990
4,820
7.5
19.5
Virginian (5)
Weeks Bay, AL
1986
6,525
13.3
34.6
Louisianian (11)
Waquoit Bay, MA
1988
2780
3.5
9.1
Virginian (3)
Great Bay, NH
1989
10,235
8.3
21.4
Acadian (2)
Chesapeake Bay, VA
(4 components)
1991
4,435
6.9
17.9
Virginian (5)
Ace Basin, SC
1992
134,710
213.4
552.8
Carolinian (7)
N. Inlet Winyah Bay, SC
1992
12,327
19.3
49.9
Carolinian (7)
Delaware
1993
4,930
7.7
20.0
Virginian (4)
Jacques Cousteau, NJ
1998
114,665
178.1
461.3
Virginian (4)
Kachemak Bay, AK
1999
365,000
570.3
1477.1
Fjord (25)
Grand Bay, MS
1999
18,400
28.1
72.8
Louisianian (12)
GTM, FL
1999
55,000
85.9
222.6
Carolinian (8)
San Francisco Bay, CA
2003
3,710
5.8
15.0
Californian (16)
Mission-Aransas, TX
2006
185,708
290.2
751.5
Louisianian (13)

Acreages are based on current, federally approved management plans.