Northern Prairie Wildlife Research Center
Table 6. Implementation of special conditions by holders of 16 individual permits for discharges of fill material into wetlands under Section 404 of the Clean Water Act; prairie pothole region of North Dakota, 1987 - 1991. Parenthetical entries are percentages
| Special conditions | Implemented | Not implemented | Unknowna | Total |
| Management of dredged and fill material | 26 (63) | 4 (10) | 11 (27) | 41 |
| Management of vegetation and control of erosion | 27 (84) | 2 (6) | 3 (9) | 32 |
| Construction protocols | 8 (10) | 0 | 69 (90) | 77 |
| Hydrologic management and control | 6 (50) | 1 (8) | 5 (42) | 12 |
| Management of fish and wildlife resources | 4 (57) | 1 (14) | 2 (29) | 7 |
| Restoration or creation of wetlands | 1 (50) | 0 | 1 (50) | 2 |
| Total | 72 (42) | 8 (5) | 91 (53) | 171 |
| aIncludes conditions, the implementations of which could not be determined by field investigation. | ||||
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/wetlands/wetlperm/table6.htm
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