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 |
|---|---|---|---|---|---|---|---|
| Greene County Roadgrade Dam 28-85-32 | Iowa | Greene | 30 | Low | Not Rated | 1986 | Other |
| Soap Creek Watershed Site 4-86 | Iowa | Appanoose | 30 | Low | Not Rated | 2010 | Flood Risk Reduction |
| Chandler Dam | Iowa | Lucas | 30 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Elliott Dam | Iowa | Story | 30 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Stever Dam | Iowa | Jefferson | 30 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| Crawford Creek Subwatershed Site 13e-1 | Iowa | Ida | 30 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Wickenkamp Dam | Iowa | Jasper | 30 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Hinze Dam | Iowa | Fremont | 30 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Perkins Dam | Iowa | Mahaska | 30 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Matthew Brown | Iowa | Union | 30 | Low | — | 2018 | Grade Stabilization |
| Twelve Mile Creek Watershed Site 62-4 | Iowa | Union | 30 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Pfieffer Dam | Iowa | Taylor | 30 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Green Castle Dam | Iowa | Marshall | 30 | Significant | Satisfactory | 1954 | Recreation |
| Mc Larty-Edwards Subwtrshd Sta 35+50 #1 | Iowa | Woodbury | 30 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Diericky Pond Dam | Iowa | Muscatine | 30 | Low | Not Rated | 1987 | Other |
| Green Dam | Iowa | Polk | 30 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Lakewood Dredge Spoil Dam | Iowa | Warren | 30 | Low | Not Rated | 1990 | Other |
| Upper Locust Watershed Site L-14 | Iowa | Wayne | 30 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| Dyson Dam | Iowa | Monroe | 30 | Low | Not Rated | 1991 | Fire Protection, Stock, Or ... |
| Randall Dam | Iowa | Lucas | 30 | Low | Not Rated | 1982 | Fire Protection, Stock, Or ... |
| Dittmer Dam | Iowa | Warren | 30 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| East Fork Grand River Watershed Site E-51 | Iowa | Ringgold | 30 | Low | Not Rated | 2006 | Flood Risk Reduction |
| Neustrom Subwatershed Site M-1 | Iowa | Woodbury | 30 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Corning Reservoir Dam | Iowa | Adams | 30 | Significant | Satisfactory | 1917 | Water Supply |
| Lazy K Dam | Iowa | Crawford | 30 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Fulton Dam | Iowa | Lucas | 30 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Gant Creek Watershed Site D-6 | Iowa | Plymouth | 30 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Turkey Creek Watershed Site 58d | Iowa | Cass | 30 | Low | Not Rated | 2004 | Grade Stabilization |
| Decatur County Roadgrade Dam 14-69-27 | Iowa | Decatur | 30 | Low | Not Rated | 1987 | Other |
| Marsh Dam | Iowa | Taylor | 30 | Low | Not Rated | 1990 | Fire Protection, Stock, Or ... |
| Halliday Dam | Iowa | Page | 30 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Doty Dam | Iowa | Dallas | 30 | Significant | Satisfactory | 1961 | Fire Protection, Stock, Or ... |
| Soap Creek Watershed Site 90-75 | Iowa | Wapello | 30 | Low | Not Rated | 2011 | Flood Risk Reduction |
| Berryman | Iowa | Davis | 30 | Low | Not Rated | — | Flood Risk Reduction |
| Turkey Cr Watershed Site 19-19 | Iowa | Cass | 30 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Rodgers Park Lake Dam | Iowa | Benton | 30 | Significant | Fair | 1977 | Recreation |
| Lannom Dam | Iowa | Poweshiek | 30 | Low | Not Rated | 1990 | Fire Protection, Stock, Or ... |
| Everling Dam | Iowa | Clarke | 30 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Croy Subwatershed Site A3-4908 | Iowa | Monona | 30 | Low | Not Rated | 1951 | Fire Protection, Stock, Or ... |
| Belva Deer Park Wetland Dam | Iowa | Keokuk | 30 | Low | Not Rated | 2001 | Fish and Wildlife Pond |
| Wilty Dam | Iowa | Davis | 30 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Croy Subwatershed Site A3-1050 | Iowa | Monona | 30 | Low | Not Rated | 1951 | Fire Protection, Stock, Or ... |
| Shryock Dam | Iowa | Polk | 30 | Significant | Fair | 1963 | Fire Protection, Stock, Or ... |
| Brown Dam | Iowa | Henry | 30 | Low | — | 2021 | Other |
| Detrick Dam | Iowa | Henry | 30 | Low | — | 2021 | Other |
| Soap Creek Watershed Site 8-76a | Iowa | Monroe | 30 | Low | Not Rated | 2007 | Flood Risk Reduction |
| Troublesome Cr Watershad Site 36-4 | Iowa | Audubon | 30 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Loch Burns Dam | Iowa | Wapello | 30 | Low | Fair | 1963 | Recreation |
| Wenger Subwatershed M 130+73 | Iowa | Woodbury | 30 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Norlin Dam | Iowa | Jones | 30 | Low | Not Rated | 2000 | 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.