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Wetlands

Losses in the United States

1780's to 1980's

Table 1


TABLE 1: WETLAND LOSSES IN THE UNITED STATES 1780's TO 1980's
                                                                                                                         
                          SURFACE AREA            |                                        WETLANDS                  
                        (S.A.) IN ACRES           |                                                                         
                                                  |    1780's                              1980's                                  
      STATE      LAND        WATER       TOTAL    |  ESTIMATES     SOURCE  % S.A.        ESTIMATES      SOURCE      % S.A.   % LOST
                                                                                                                              
       AL    32,544,640    485,120    33,029,760  |  7,567,600         5    22.9%        3,783,800        5         11.5%      -50%  
       AZ    72,680,320    221,440    72,901,760  |    931,000         9     1.3%          600,000        10         0.8%      -36%  
       AR    33,392,000    594,560    33,986,560  |  9,848,600        11    29.0%        2,763,600        12         8.1%      -72%  
                                                                                                                                  
       CA   100,183,680  1,379,840   101,563,520  |  5,000,000     13,14     4.9%          454,000     15,16         0.4%      -91%  
       CO    66,428,800    289,920    66,718,720  |  2,000,000        17     3.0%        1,000,000        18         1.5%      -50%  
       CT     3,116,800     88,960     3,205,760  |    670,000         9    20.9%          172,500        19         5.4%      -74%  
                                                                                                                                  
       DE     1,268,480     48,000     1,316,480  |    479,785        20    36.4%          223,000        20        16.9%      -54%  
       FL    34,647,040  2,831,360    37,478,400  | 20,325,013  21,22,23    54.2%       11,038,300        24        29.5%      -46%  
       GA    37,246,080    434,560    37,680,640  |  6,843,200        11    18.2%        5,298,200        25        14.1%      -23%  
                                                                                                                                  
       ID    52,906,880    563,200    53,470,080  |    877,000         9     1.6%          385,700        10         0.7%      -56%  
       IL    35,761,280    334,720    36,096,000  |  8,212,000        27    22.8%        1,254,500        28         3.5%      -85%  
       IN    23,160,960     65,280    23,226,240  |  5,600,000        29    24.1%          750,633        30         3.2%      -87%  
                                                                                                                                  
       IA    35,867,520    158,080    36,025,600  |  4,000,000     31,32    11.1%          421,900     31,33         1.2%      -89%  
       KS    52,515,840    133,120    52,648,960  |    841,000         9     1.6%          435,400        10         0.8%      -48%  
       KY    25,504,640    348,160    25,852,800  |  1,566,000        34     6.1%          300,000        35         1.2%      -81%  
                                                                                                                                  
       LA    28,899,200  2,155,520    31,054,720  | 16,194,500        11    52.1%        8,784,200        36        28.3%      -46%  
       ME    19,797,120  1,460,480    21,257,600  |  6,460,000        37    30.4%        5,199,200        38        24.5%      -20%  
       MD     6,330,240    439,040     6,769,280  |  1,650,000        11    24.4%          440,000        39         6.5%      -73%
                                                                                                                                  
       MA     5,013,120    271,360     5,284,480  |    818,000        37    15.5%          588,486        19        11.1%      -28%  
       MI    36,363,520    894,720    37,258,240  | 11,200,000        40    30.1%        5,583,400        10        15.0%      -50%  
       MN    50,744,960  3,058,560    53,803,520  | 15,070,000        11    28.0%        8,700,000        41        16.2%      -42%  
                                                                                                                                 
       MS    30,309,120    229,120    30,538,240  |  9,872,000        42    32.3%        4,067,000        12        13.3%      -59%  
       MO    44,189,440    409,600    44,599,040  |  4,844,000     11,43    10.9%          643,000        44         1.4%      -87%  
       MT    93,185,920    982,400    94,168,320  |  1,147,000         9     1.2%          840,300        10         0.9%      -27%  
                                                                                                                                 
       NE    48,974,080    451,200    49,425,280  |  2,910,500        11     5.9%        1,905,500        10         3.9%      -35%  
       NV    70,328,960    416,640    70,745,600  |    487,350        45     0.7%          236,350        46         0.3%      -52%  
       NH     5,781,120    173,440     5,954,560  |    220,000         9     3.7%          200,000        47         3.4%        9%  
                                                                                                                                 
       NJ     4,820,480    194,560     5,015,040  |  1,500,000        10    29.9%          915,960        48        18.3%      -39%  
       NM    77,724,800    141,440    77,866,240  |    720,000         9     0.9%          481,900        10         0.6%      -33%  
       NY    30,636,160  1,092,480    31,728,640  |  2,562,000      9,49     8.1%        1,025,000        49         3.2%      -60%  
                                                                                                                                  
       NC    31,283,200  2,371,840    33,655,040  | 11,089,500        42    33.0%        5,689,500        12        16.9%      -49%  
       ND    44,339,200    886,400    45,225,600  |  4,927,500        50    10.9%        2,490,000        51         5.5%      -49%  
       OH    26,251,520    130,560    26,382,080  |  5,000,000        52    19.0%          482,800     10,52         1.8%      -90%  
                                                                                                                                  
       OK    44,149,760    598,400    44,748,160  |  2,842,600  53,54,55     6.4%          949,700  53,54,55         2.1%      -67%  
       OR    61,573,760    494,080    62,067,840  |  2,262,000         9     3.6%        1,393,900        10         2.2%      -38%  
       PA    28,816,000    197,120    29,013,120  |  1,127,000        56     3.9%          499,014     39,56         1.7%      -56%  
                                                                                                                              
       RI       671,360    105,600       776,960  |    102,690        57    13.2%           65,154        58         8.4%      -37%
       SC    19,379,200    496,000    19,875,200  |  6,414,000        42    32.3%        4,659,000        12        23.4%      -27%
       SD    48,611,840    698,240    49,310,080  |  2,735,100        59     5.5%        1,780,000        51         3.6%      -35%
                                                                                                                              
       TN    26,474,240    561,920    27,036,160  |  1,937,000        42     7.2%          787,000        12         2.9%      -59%
       TX   168,300,800  2,796,160   171,096,960  | 15,999,700        60     9.4%        7,612,412        61         4.4%      -52%
       UT    52,723,840  1,622,400    54,346,240  |    802,000        62     1.5%          558,000     63,64         1.0%      -30%
                                                                                                                              
       VT     5,935,360    214,400     6,149,760  |    341,000        65     5.5%          220,000        19         3.6%      -35%
       VA    25,498,240    624,640    26,122,880  |  1,849,000        10     7.1%        1,074,613     39,66         4.1%      -42%
       WA    42,664,320    978,560    43,642,880  |  1,350,000        67     3.1%          938,000        67         2.1%      -31%
                                                                                                                              
       WV    15,413,760     62,080    15,475,840  |    134,000        68     0.9%          102,000        39         0.7%      -24%
       WI    34,856,960  1,081,600    35,938,560  |  9,800,000        69    27.3%        5,331,392        70        14.8%      -46%
       WY    62,259,840    405,120    62,664,960  |  2,000,000        10     3.2%        1,250,000        71         2.0%      -38%
-----------------------------------------------------------------------------------------------------------------------------------
SUBTOTAL  1,899,526,400 34,672,000 1,934,198,400   221,129,638                11%      104,374,314                     5%      -53%      

ALASKA      362,516,480 12,787,200   375,303,680   170,200,000         6    45.3%      170,000,000       7,8        45.3%     -0.1%

HAWAII        4,112,000      3,200     4,115,200        58,800        26     1.4%           51,800     16,26         1.3%      -12%

TOTAL     2,266,154,880 47,462,400 2,313,617,280   391,388,438                         274,426,114                  11.9%      -30%
-----------------------------------------------------------------------------------------------------------------------------------
NOTE: Surface area - There are some discrepancies between the total surface area of states. These differences are probably due to shifting river channels froming state borders. The area given is that presented by the U.S. Geological Survey, National Atlas of the United States, 1970.

Wetland distribution and changes vary dramatically within states dependent on both geographical and/or land use patterns.


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