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Wetlands

Losses in the United States

1780's to 1980's

Figure 5


FIGURE 5: EXTENT AND LOCATION OF ARTIFICIALLY DRAINED AGRICULTURAL
LAND IN THE UNITED STATES, 1985

(Courtesy of U.S. Department of Agriculture Economic Research Service.) Frayer et al. estimated that 87 percent of the wetland losses from the mid-1950's to the mid-1970's were due to agricultural conversion.


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