6-3 Wetlands Impacted and Mitigated Under the Federal-Aid Highway Program: 2000-2007

6-3 Wetlands Impacted and Mitigated Under the Federal-Aid Highway Program: 2000-2007

Excel | CSV

  2000 2001 2002 2003 2004 2005 R2006 2007
Acres                
Impacted 2,041 1,905 1,942 1,278 847 1,139 591 699
Mitigated 7,671 4,017 5,198 3,431 1,763 3,741 1,581 2,285
Gained (net) 5,630 2,112 3,256 2,153 916 2,602 990 1,586
Mitigation ratio 3.8:1 2.1:1 2.7:1 2.7:1 2.1:1 3.3:1 2.7:1 3.3:1

Key: R = revised.

Notes: These data cover wetlands acreage affected by Federal-Aid Highway projects, approximately 24% of the total mileage of U.S. public roads. These data are collected by states using varying collection methodologies. The mitigation ratio equals acres mitigated to acres impacted. Acres gained data have been revised for 2006. 2000-05 data are adjusted to represent all 50 states, based on the proportion of reporting states. 2006 data is based on 17 states' responses. 2007 data is based on 34 states' responses.

Sources: 2000-2004-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/ as of November 2008. 2005-2007-USDOT, FHWA, personal communication, August 2007 and September 2009.