Table 31 Wetlands Impacted and Mitigated Under the Federal-Aid Highway Program

Table 31 Wetlands Impacted and Mitigated Under the Federal-Aid Highway Program

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  2000 2001 2002 2003 2004
Acres impacted 2,041 1,905 1,942 1,278 847
Acres mitigated 7,671 4,017 5,198 3,431 1,763
Acres gained (net) 5,630 2,112 3,256 2,153 916
Mitigation ratio 3.8:1 2.1:1 2.7:1 2.7:1 2.1:1

Notes: These data cover wetlands acreage affected by Federal-Aid Highway projects, approximately 24% of the total mileage of the U.S. public roads. These data are collected by states using varying collection methodologies. The mitigation ratio equals acres mitigated to acres impacted.

Source: U.S. Department of Transportation, Federal Highway Administration, Federal Highway Administration Wetland Mitigation Performance Measure for Federal-Aid Highway Projects Fiscal Year (FY) 2004, available at http://www.fhwa.dot.gov/environment/perform/wetrpt04.htm, as of October 2005.