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 |
|---|---|---|---|---|---|---|---|
| Bacon Creek Watershed Site C-1 | Iowa | Woodbury | 41 | High | Satisfactory | 1976 | Flood Risk Reduction |
| Powers Dam | Iowa | Mills | 41 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Dane Ridge Watershed Site D-1-7 | Iowa | Crawford | 41 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Sioux Rapids Golf Club Dam | Iowa | Buena Vista | 41 | Low | Not Rated | 1980 | Fire Protection, Stock, Or ... |
| Hound Dog Watershed Site B-2 | Iowa | Fremont | 41 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Collier Dam | Iowa | Harrison | 41 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Polk County Roadgrade Dam 21-78-22 | Iowa | Polk | 41 | Low | Not Rated | 1992 | Other |
| West Lakes Office Park Dam | Iowa | Polk | 41 | High | Satisfactory | 1990 | Flood Risk Reduction |
| Mill Picayune Watershed Site M-24-3 | Iowa | Shelby | 41 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Big Park Watershed Site A-3 | Iowa | Crawford | 41 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Hound Dog Watershed Site B-1 | Iowa | Fremont | 41 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Weber Creek Subwatershed Site 5-4460 | Iowa | Woodbury | 41 | Low | Not Rated | 1956 | Fire Protection, Stock, Or ... |
| Crawford CO Roadgrade Dam 34-84-39 | Iowa | Crawford | 41 | Low | Not Rated | 2002 | Grade Stabilization |
| Reed Subwatershed Site 13c-2232 | Iowa | Monona | 41 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Harmony Creek Watershed Site 7 | Iowa | Harrison | 40 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Albia Reservoir Dam | Iowa | Monroe | 40 | Significant | Fair | 1938 | Recreation |
| Iowa Noname48 | Iowa | Shelby | 40 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Coberly/Swenson Dam | Iowa | Monona | 40 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Foix Dam | Iowa | Woodbury | 40 | Low | Not Rated | 1992 | Fire Protection, Stock, Or ... |
| Thompson Dam | Iowa | Pottawattamie | 40 | Low | Not Rated | 1955 | Fire Protection, Stock, Or ... |
| Soap Creek Watershed Site 4-57a | Iowa | Appanoose | 40 | Low | Not Rated | 1992 | Fire Protection, Stock, Or ... |
| Little Beaver Subwatershed M-16730 | Iowa | Woodbury | 40 | Low | Not Rated | 1957 | Fire Protection, Stock, Or ... |
| Barr Dam | Iowa | Montgomery | 40 | Low | Not Rated | 1995 | Fire Protection, Stock, Or ... |
| Leech Hollow Subwatershed Site C-6 | Iowa | Monona | 40 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Dakins Lake Dam | Iowa | Story | 40 | Significant | Fair | 2014 | Recreation |
| Springbrook Lake Dam | Iowa | Guthrie | 40 | Significant | Satisfactory | 1934 | Recreation |
| Louisa County Raodgrade Dam 36-73-3 | Iowa | Louisa | 40 | Low | Not Rated | 2002 | Grade Stabilization |
| Heisler Subwatershed Site 2-1 | Iowa | Woodbury | 40 | Low | Not Rated | 2004 | Flood Risk Reduction |
| Leech Hollow Subwatershed Site C-11 | Iowa | Monona | 40 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Fairfield Water Works Dam No 1 | Iowa | Jefferson | 40 | Significant | Satisfactory | 1888 | Water Supply |
| Wohlers Dam | Iowa | Pottawattamie | 40 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Gant Creek Watershed Site C-3 | Iowa | Plymouth | 40 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Waubonsie Cr. Watershed Site 39 | Iowa | Mills | 40 | Low | Not Rated | 1983 | Fire Protection, Stock, Or ... |
| Wolf Creek Subwatershed Site 5a-1 | Iowa | Woodbury | 40 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Camp Creek Subwatershed Site 1-2 | Iowa | Woodbury | 40 | Low | Not Rated | 1992 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-24-17 | Iowa | Shelby | 40 | Significant | Satisfactory | 1984 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site N-13-2 | Iowa | Harrison | 40 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Mc Dowel Dam #1 | Iowa | Lee | 40 | Significant | Satisfactory | 1967 | Recreation |
| Crawford Creek Subwatershed Site 13f-1 | Iowa | Ida | 40 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| College Corner Subwatershed Site 4-5 | Iowa | Woodbury | 40 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Davis-Battle Cr. Watershed Site G-1 | Iowa | Monona | 40 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| South Hungerford 2 Watershed Site 11 | Iowa | Plymouth | 40 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Diamond Lake Dam (Poweshiek Co) | Iowa | Poweshiek | 40 | Significant | Satisfactory | 1952 | Water Supply |
| Mosquito of Harrison Watershed Site 5-3 | Iowa | Harrison | 40 | Low | Not Rated | 1988 | Fire Protection, Stock, Or ... |
| Dawson Dam | Iowa | Des Moines | 40 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Van Sickle Dam | Iowa | Boone | 40 | Low | Not Rated | 1995 | Fire Protection, Stock, Or ... |
| Mosquito of Harrison Watershed Site 7-4 | Iowa | Harrison | 40 | Low | Not Rated | 1993 | Fire Protection, Stock, Or ... |
| Lum Hollow Subwatershed 9-5186 | Iowa | Woodbury | 40 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Conley Dam | Iowa | Cherokee | 40 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| Elliot Dam | Iowa | Dallas | 40 | Low | Not Rated | 1965 | 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.