| U.S. General Accounting Office |
| Survey on Food Security Act Conservation Compliance (GAO-03-492SP) |
| Q29. In your county, how effective are swampbuster provisions at limiting the conversion of wetlands to cropland? |
| Extremely effective (percent) | Very effective (percent) | Moderately effective (percent) | Somewhat effective (percent) | Slightly or not effective (percent) | Number of respondents | |
| Alabama | 14.3 | 34.3 | 31.4 | 17.1 | 2.9 | 35 |
| Arkansas | 25.0 | 34.4 | 25.0 | 12.5 | 3.1 | 32 |
| California | 5.0 | 35.0 | 30.0 | 25.0 | 5.0 | 20 |
| Colorado | 6.3 | 31.3 | 37.5 | 12.5 | 12.5 | 16 |
| Florida | 17.2 | 51.7 | 13.8 | 13.8 | 3.4 | 29 |
| Georgia | 19.2 | 46.2 | 19.2 | 9.6 | 5.8 | 52 |
| Iowa | 3.9 | 44.7 | 23.7 | 17.1 | 10.5 | 76 |
| Idaho | 8.7 | 26.1 | 34.8 | 21.7 | 8.7 | 23 |
| Illinois | 21.9 | 43.8 | 19.2 | 9.6 | 5.5 | 73 |
| Indiana | 22.4 | 34.5 | 25.9 | 13.8 | 3.4 | 58 |
| Kansas | 6.3 | 40.0 | 30.0 | 16.3 | 7.5 | 80 |
| Kentucky | 33.3 | 28.6 | 28.6 | 7.1 | 2.4 | 42 |
| Louisiana | 22.5 | 57.5 | 7.5 | 12.5 | 0.0 | 40 |
| Maryland | 6.7 | 46.7 | 33.3 | 13.3 | 0.0 | 15 |
| Michigan | 17.4 | 45.7 | 21.7 | 13.0 | 2.2 | 46 |
| Minnesota | 18.2 | 45.5 | 25.8 | 9.1 | 1.5 | 66 |
| Missouri | 15.4 | 44.6 | 20.0 | 18.5 | 1.5 | 65 |
| Mississippi | 16.3 | 55.1 | 16.3 | 12.2 | 0.0 | 49 |
| Montana | 16.7 | 38.9 | 19.4 | 13.9 | 11.1 | 36 |
| North Carolina | 18.2 | 41.8 | 34.5 | 3.6 | 1.8 | 55 |
| North Dakota | 8.7 | 47.8 | 23.9 | 15.2 | 4.3 | 46 |
| Nebraska | 5.9 | 26.5 | 41.2 | 23.5 | 2.9 | 68 |
| New Mexico | 0.0 | 40.0 | 30.0 | 0.0 | 30.0 | 10 |
| New York | 11.1 | 30.6 | 27.8 | 16.7 | 13.9 | 36 |
| Ohio | 7.8 | 41.2 | 27.5 | 21.6 | 2.0 | 51 |
| Oklahoma | 13.0 | 47.8 | 8.7 | 21.7 | 8.7 | 23 |
| Oregon | 0.0 | 31.3 | 37.5 | 31.3 | 0.0 | 16 |
| Pennsylvania | 11.5 | 42.3 | 11.5 | 23.1 | 11.5 | 26 |
| South Carolina | 33.3 | 38.1 | 14.3 | 4.8 | 9.5 | 21 |
| South Dakota | 6.0 | 36.0 | 24.0 | 16.0 | 18.0 | 50 |
| Tennessee | 12.5 | 42.5 | 17.5 | 22.5 | 5.0 | 40 |
| Texas | 10.4 | 49.0 | 13.5 | 14.6 | 12.5 | 96 |
| Utah | 10.0 | 60.0 | 0.0 | 10.0 | 20.0 | 10 |
| Virginia | 9.1 | 57.6 | 9.1 | 18.2 | 6.1 | 33 |
| Washington | 0.0 | 33.3 | 42.9 | 14.3 | 9.5 | 21 |
| Wisconsin | 19.6 | 56.9 | 13.7 | 3.9 | 5.9 | 51 |
| West Virginia | 6.3 | 50.0 | 31.3 | 6.3 | 6.3 | 16 |
| States with fewer than 15 respondents | 3.8 | 36.5 | 26.9 | 13.5 | 19.2 | 52 |
| All States | 13.4 | 42.2 | 23.4 | 14.4 | 6.5 | 1,574 |