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The USGS Water Science School

How much of your state is wet?

What percent of the area of the United States do you think is water?

Data is for the 50 states and the District of Columbia. Source U.S. Census Bureau: Geography

What percent of your state do you think is water covered? Which state has the highest percentage of water area? Is the West really "drier" than the rest of the country? The table below shows the total land area and water area of each state.

These water area data represent the sum of inland and coastal water and the Great Lakes. The source of this data is the U.S. Census Bureau, Geography: State Area Measurements, 2010.

Land area and water area of each state
StateTotal area
square miles
Total area
square kilometers
Land area
square miles
Land area
square kilometers
Water area
square miles
Water area
square kilometers
Percent area, water
Alabama 52,420 135,767 50,645 131,171 1,775 4,597 3.4%
Alaska 665,384 1,723,337 570,641 1,477,953 94,743 245,383 14.2 %
Arizona 113,990 295,234 113,594 294,207 396 1,026 0.3 %
Arkansas 53,179 137,732 52,035 134,771 1,143 2,961 2.1%
California 163,695 423,967 155,779 403,466 7,916 20,501 4.8%
Colorado 104,094 269,601 103,642 268,431 452 1,170 0.4%
Connecticut 5,543 14,357 4,842 12,542 701 1,816 12.6%
Delaware 2,489 6,446 1,949 5,047 540 1,399 21.7%
District of Columbia 68 177 61 158 7 19 10.3%
Florida 65,758 170,312 53,625 138,887 12,133 31,424 18.5%
Georgia 59,425 153,910 57,513 148,959 1,912 4,951 3.2%
Hawaii 10,932 28,313 6,423 16,635 4,509 11,678 41.2%
Idaho 83,569 216,443 82,643 214,045 926 2,398 1.1%
Illinois 57,914 149,995 55,519 143,793 2,395 6,202 4.1%
Indiana 36,420 94,326 35,826 92,789 593 1,537 1.6%
Iowa 56,273 145,746 55,857 144,669 416 1,077 0.7%
Kansas 82,278 213,100 81,759 211,754 520 1,346 0.6%
Kentucky 40,408 104,656 39,486 102,269 921 2,387 2.3%
Louisiana 52,378 135,659 43,204 111,898 9,174 23,761 17.5%
Maine 35,380 91,633 30,843 79,883 4,537 11,750 12.8%
Maryland 12,406 32,131 9,707 25,142 2,699 6,990 21.8%
Massachusetts 10,554 27,336 7,800 20,202 2,754 7,134 26.1 %
Michigan 96,714 250,487 56,539 146,435 40,175 104,052 41.5%
Minnesota 86,936 225,163 79,627 206,232 7,309 18,930 8.4%
Mississippi 48,432 125,438 46,923 121,531 1,509 3,907 3.1%
Missouri 69,707 180,540 68,742 178,040 965 2,501 1.4%
Montana 147,040 380,831 145,546 376,962 1,494 3,869 1.0%
Nebraska 77,348 200,330 76,824 198,974 524 1,356 0.7%
Nevada 110,572 286,380 109,781 284,332 791 2,048 0.7%
New Hampshire 9,349 24,214 8,953 23,187 397 1,027 4.2%
New Jersey 8,723 22,591 7,354 19,047 1,368 3,544 15.7%
New Mexico 121,590 314,917 121,298 314,161 292 757 0.2%
New York 54,555 141,297 47,126 122,057 7,429 19,240 13.6%
North Carolina 53,819 139,391 48,618 125,920 5,201 13,471 9.7%
North Dakota 70,698 183,108 69,001 178,711 1,698 4,397 2.4%
Ohio 44,826 116,098 40,861 105,829 3,965 10,269 8.8%
Oklahoma 69,899 181,037 68,595 177,660 1,304 3,377 1.9%
Oregon 98,379 254,799 95,988 248,608 2,391 6,191 2.4%
Pennsylvania 46,054 119,280 44,743 115,883 1,312 3,397 2.8%
Rhode Island 1,545 4,001 1,034 2,678 511 1,324 33.1%
South Carolina 32,020 82,933 30,061 77,857 1,960 5,076 6.1%
South Dakota 77,116 199,729 75,811 196,350 1,305 3,379 1.7%
Tennessee 42,144 109,153 41,235 106,798 909 2,355 2.2%
Texas 268,596 695,662 261,232 676,587 7,365 19,075 2.7%
Utah 84,897 219,882 82,170 212,818 2,727 7,064 3.2%
Vermont 9,616 24,906 9,217 23,871 400 1,035 4.2%
Virginia 42,775 110,787 39,490 102,279 3,285 8,508 7.7%
Washington 71,298 184,661 66,456 172,119 4,842 12,542 6.8%
West Virginia 24,230 62,756 24,038 62,259 192 497 0.8%
Wisconsin 65,496 169,635 54,158 140,268 11,339 29,367 17.3%
Wyoming 97,813 253,335 97,093 251,470 720 1,864 0.7%
United States 3,796,742 9,833,517 3,531,905 9,147,593 264,837 685,924 7.0%

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Page Last Modified: Monday, 17-Mar-2014 11:04:27 EDT