Northern Prairie Wildlife Research Center
Table 3. Purpose of 87 discharges of fill material into wetlands authorized under Section 404 of the Clean Water Act by nationwide permits 13, 14, and 26 and by individual permits; prairie pothole region of North Dakota, 1987 - 1991. Parenthetical entries are percentages.
| Purpose | n |
| Road crossing or road upgrade | 24 (28) |
| Bank stabilization | 17 (20) |
| Bridge replacement or construction | 16 (18) |
| Dam modification or construction | 11 (13) |
| Boating (i.e., pier construction) | 10 (11) |
| Commercial development (i.e., construction of a parking lot) | 4 (5) |
| Miscellaneous | 3 (3) |
| Channel cleaning | 2 (2) |
| Total | 87 (100) |
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/wetlands/wetlperm/table3.htm
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