Table 6-3 Wetlands Impacted and Mitigated Under the Federal-Aid Highway Program

Table 6-3 Wetlands Impacted and Mitigated Under the Federal-Aid Highway Program

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  2000 2001 2002 2003 2004 2005
Acres impacted 2,041 1,905 1,942 1,278 847 1,139
Acres mitigated 7,671 4,017 5,198 3,431 1,763 3,741
Acres gained (net) 5,630 2,112 3,256 2,153 916 2,292
Mitigation ratio 3.8:1 2.1:1 2.7:1 2.7:1 2.1:1 3.3:1

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: 2000-2004- U.S. Department of Transportation (USDOT), Federal Highway Administration (FHWA), Federal Highway Administration Wetland Mitigation Performance Measure for Federal-Aid Highway Projects Fiscal Year 2004, available at http://fhwa.dot.gov/environment/perform/wetrpt04.htm. 2005 - USDOT, FHWA, Personal communication, September 2006.