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 |
|---|---|---|---|---|---|---|---|
| Mill Picayune Watershed Site P-92-1 | Iowa | Shelby | 51 | Low | Not Rated | 1984 | Fire Protection, Stock, Or ... |
| Bacon Creek Watershed Site H-2-2 | Iowa | Woodbury | 51 | Significant | Satisfactory | 1981 | Flood Risk Reduction |
| Lake Sundown Dam | Iowa | Appanoose | 51 | Significant | Satisfactory | 1976 | Recreation |
| Reed Subwatershed Sta 45+25 #4 | Iowa | Monona | 51 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Waubonsie Cr. Watershed Site 3-2 | Iowa | Mills | 51 | Low | Not Rated | 1993 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-24-5 | Iowa | Shelby | 51 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| U-B Subwatershed Site 2-2 | Iowa | Monona | 51 | Low | Not Rated | 1962 | Fire Protection, Stock, Or ... |
| Afton Reservoir Dam | Iowa | Union | 51 | Significant | Satisfactory | 1936 | Water Supply |
| Upper Beaver Subwatershed Site 20-1 | Iowa | Monona | 51 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Bacon Creek Watershed Site A-2-2 | Iowa | Woodbury | 51 | Significant | Fair | 1978 | Flood Risk Reduction |
| Reed Subwatershed Sta 71+10 | Iowa | Monona | 51 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Bacon Creek Watershed Site A-2-4 | Iowa | Woodbury | 51 | High | Satisfactory | 1979 | Flood Risk Reduction |
| Midwest Oilseeds Dam | Iowa | Dallas | 51 | Low | Not Rated | 2000 | Fire Protection, Stock, Or ... |
| Cipco Silt Dam | Iowa | Guthrie | 51 | Low | Satisfactory | 1986 | Other |
| Camp Klaus Dam | Iowa | Clayton | 50 | Low | Not Rated | 1978 | Recreation |
| Lake Pahoja Dam | Iowa | Lyon | 50 | Significant | Satisfactory | 1974 | Fire Protection, Stock, Or ... |
| Bacon Creek Watershed Site J-2 | Iowa | Woodbury | 50 | Low | Not Rated | 1988 | Flood Risk Reduction |
| Waubonsie Cr. Watershed Site 3-6 | Iowa | Mills | 50 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Walling Subwatershed Sta 55+40 #1 | Iowa | Woodbury | 50 | Low | Not Rated | 1953 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-11-4 | Iowa | Shelby | 50 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Stutzman Dam | Iowa | Washington | 50 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Huff Subwatershed Sta 77+72 #1 | Iowa | Monona | 50 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Mike Mikkelson Subwatershed 5-5020 | Iowa | Monona | 50 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Cedar Creek Dam | Iowa | Madison | 50 | Significant | Satisfactory | 1939 | Water Supply |
| Phillips Subwatershed Site 5740 | Iowa | Monona | 50 | Low | Not Rated | 1956 | Fire Protection, Stock, Or ... |
| Lake Sugema Dam | Iowa | Van Buren | 50 | High | Satisfactory | 1992 | Recreation |
| Hammer Dam | Iowa | Webster | 50 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Iowa Noname36 | Iowa | Plymouth | 50 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Camp Wa Shawtee Dam | Iowa | Fremont | 50 | Low | Not Rated | 1963 | Recreation |
| Bacon Creek Watershed Site A-3-1 | Iowa | Woodbury | 50 | High | Satisfactory | 1978 | Flood Risk Reduction |
| Mill Picayune Watershed Site M-16-4 | Iowa | Shelby | 50 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Oak Lake Dam | Iowa | Kossuth | 50 | Significant | Satisfactory | 1971 | Recreation |
| Lake Ponderosa Dam | Iowa | Poweshiek | 50 | High | Satisfactory | 1969 | Other |
| North Pigeon Cr Watershed Site 16 | Iowa | Pottawattamie | 50 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Holiday Lake Dam | Iowa | Poweshiek | 50 | Significant | Satisfactory | 1962 | Recreation |
| Mosquito of Harrison Watershed Site 7-1 | Iowa | Harrison | 50 | Low | Not Rated | 1993 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-22-6 | Iowa | Shelby | 50 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Iowa Noname87 | Iowa | Fremont | 50 | Low | Not Rated | 1976 | Other |
| Dane Ridge Watershed Site D-1-3 | Iowa | Crawford | 50 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Neustrom Subwatershed Site 9-3 | Iowa | Woodbury | 50 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Twin Valley Lakes - East Dam | Iowa | Johnson | 50 | Significant | Poor | 1965 | |
| Mill Picayune Watershed Site P-79-2 | Iowa | Shelby | 50 | Low | Not Rated | 1986 | Fire Protection, Stock, Or ... |
| Waubonsie Cr. Watershed Site 31-1 | Iowa | Mills | 50 | Low | Not Rated | 1983 | Fire Protection, Stock, Or ... |
| Wayne Co. Roadgrade Dam - Garber Site | Iowa | Wayne | 49 | Low | Not Rated | 1996 | Other |
| Parnell Creek Subwatershed Site 8-2 | Iowa | Woodbury | 49 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Arnold-Armstrong Subwtrshd Sta 69+48 | Iowa | Monona | 49 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Crawford Creek Subwatershed Site M-3 | Iowa | Ida | 49 | Significant | Satisfactory | 1976 | Recreation |
| Fort Des Moines Park Dam | Iowa | Polk | 49 | High | Fair | 1977 | Recreation |
| Johnson (Oscar) Dam | Iowa | Harrison | 49 | Low | Not Rated | 2011 | Flood Risk Reduction |
| Ryan Henschal Watershed Site E-2 | Iowa | Pottawattamie | 49 | Low | Not Rated | 1963 | 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.