Browse Dams
4,128 dams in the National Inventory of Dams.
National Inventory of Dams
Browse 4,128 dams from the NID database. Each record includes dam name, location, physical dimensions, hazard potential classification, condition assessment, purpose, owner information, and emergency action plan status. Use the filters below to search by state, hazard level, condition, or keyword.
| Name | State | County | Height (ft) | Hazard | Condition | Year | Purpose |
|---|---|---|---|---|---|---|---|
| Fraser Milldam | Iowa | Boone | 7 | Low | Not Rated | 1911 | Recreation |
| Scott Dam | Iowa | Pocahontas | 7 | Low | Not Rated | 1999 | Fish and Wildlife Pond |
| Quasqueton Dam | Iowa | Buchanan | 7 | Low | Not Rated | 1932 | Recreation |
| Waterloo Milldam | Iowa | Black Hawk | 7 | Low | Satisfactory | 1915 | |
| Cole Dam | Iowa | Van Buren | 7 | Low | Not Rated | 1999 | Fish and Wildlife Pond |
| Troy Mills Dam | Iowa | Linn | 7 | Low | Not Rated | 1989 | Recreation |
| Cutler Dam | Iowa | Worth | 7 | Low | Not Rated | 1999 | Fish and Wildlife Pond |
| Boone Milldam | Iowa | Boone | 7 | Low | Not Rated | 1932 | Water Supply |
| Keyser Wetland Dam | Iowa | Carroll | 7 | Low | Not Rated | 1995 | Other |
| Van Veldhuizen Dam | Iowa | Mahaska | 7 | Low | Not Rated | 1996 | Fish and Wildlife Pond |
| Rock Rapids Milldam | Iowa | Lyon | 7 | Low | Not Rated | 1931 | Water Supply |
| Lower Dunbar Dam | Iowa | Greene | 7 | Low | Not Rated | 1996 | Recreation |
| Little Sioux Dam | Iowa | Harrison | 7 | Low | Not Rated | 1963 | Other |
| Greenbelt Wetland Dam | Iowa | Lucas | 7 | Low | Not Rated | 1994 | Recreation |
| Elks Club Dam | Iowa | Floyd | 7 | Low | Satisfactory | - | |
| Nelson North Weland Dam | Iowa | Pocahontas | 7 | Low | Not Rated | 2004 | Fish and Wildlife Pond |
| Charles City Beauty Dam | Iowa | Floyd | 7 | Low | Not Rated | 1933 | Recreation |
| Dudycha Wrp #1 | Iowa | Buena Vista | 7 | Low | Not Rated | 2002 | Fish and Wildlife Pond |
| Winkler / Spies Dam | Iowa | Pocahontas | 7 | Low | Not Rated | 1999 | Fish and Wildlife Pond |
| Shell Rock Milldam | Iowa | Butler | 7 | Low | Not Rated | 1928 | Recreation |
| Bechert Dam - Lower Site | Iowa | Keokuk | 7 | Low | Not Rated | 1999 | Fish and Wildlife Pond |
| Des Moines-Waterworks Dam | Iowa | Polk | 7 | Low | Not Rated | 1923 | Water Supply |
| Hawk Investments Dam | Iowa | Iowa | 7 | Low | Not Rated | 1997 | Recreation |
| Center Lake Outlet Control Structure | Iowa | Dickinson | 7 | Low | Not Rated | 2009 | Recreation |
| Goose Lake - South Pond Dam | Iowa | Clinton | 7 | Low | Not Rated | 2004 | Fish and Wildlife Pond |
| Lake Morris Wetland Dam Site 1 | Iowa | Lucas | 7 | Low | Not Rated | 1998 | Other |
| Des Moines-Scott Street Milldam | Iowa | Polk | 7 | Low | Not Rated | 1920 | Recreation |
| Soap Creek Watershed Site 26-37b | Iowa | Davis | 7 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
Frequently Asked Questions
Hazard potential is based on the consequences of dam failure, not the condition of the dam. High hazard means loss of human life is probable. Significant means economic and environmental losses are expected but no probable loss of life. Low means minimal losses are expected. The classification considers downstream population, infrastructure, and environmental resources.
Condition ratings reflect the physical state of the dam based on periodic inspections. Satisfactory means no deficiencies found. Fair means minor issues exist but no immediate action needed. Poor means safety deficiencies require remedial action. Unsatisfactory means the dam is unsafe and immediate corrective action is required.
Yes. Use the search field above to find dams by name. You can also combine the search with state, hazard, and condition filters to narrow your results. Each dam record links to a detail page with complete information.