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 |
|---|---|---|---|---|---|---|---|
| Scharnberg Dam | Iowa | Warren | 41 | Low | Not Rated | 2007 | Recreation |
| Collier Dam | Iowa | Harrison | 41 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Hound Dog Watershed Site B-1 | Iowa | Fremont | 41 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Mud Creek Subwatershed Site 15-2 | Iowa | Plymouth | 41 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Bengal Dam | Iowa | Plymouth | 41 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Mucky Creek Subwatershed Sta 28+50 #2 | Iowa | Monona | 41 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Cord Subwatershed M-7234 | Iowa | Woodbury | 41 | Low | Not Rated | 1957 | Fire Protection, Stock, Or ... |
| West Lakes Office Park Dam | Iowa | Polk | 41 | High | Satisfactory | 1990 | Flood Risk Reduction |
| Reed Subwatershed Site 13c-2232 | Iowa | Monona | 41 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Long Dam | Iowa | Warren | 41 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Simpson Creek Watershed Site 4 | Iowa | Fremont | 41 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Good/Wanamaker Dam | Iowa | Fremont | 41 | Low | Not Rated | 1962 | Fire Protection, Stock, Or ... |
| Winner Dam | Iowa | Harrison | 41 | Low | Not Rated | 2011 | Flood Risk Reduction |
| Hound Dog Watershed Site B-6 | Iowa | Fremont | 41 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Baker Subwatershed Site 5-3 | Iowa | Monona | 40 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Waterford Pond Dam | Iowa | Polk | 40 | Low | Fair | 1966 | Fire Protection, Stock, Or ... |
| 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 ... |
| Diamond Lake Dam (Poweshiek Co) | Iowa | Poweshiek | 40 | Significant | Satisfactory | 1952 | Water Supply |
| Kennedy & Johns Dam | Iowa | Plymouth | 40 | Significant | Not Rated | 1975 | Fire Protection, Stock, Or ... |
| Springbrook Lake Dam | Iowa | Guthrie | 40 | Significant | Satisfactory | 1934 | Recreation |
| Thompson Dam | Iowa | Pottawattamie | 40 | Low | Not Rated | 1955 | Fire Protection, Stock, Or ... |
| Mosquito of Harrison Watershed Site 5-3 | Iowa | Harrison | 40 | Low | Not Rated | 1988 | Fire Protection, Stock, Or ... |
| Neustrom Subwatershed Site 19-3 | Iowa | Woodbury | 40 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Iowa Noname6 | Iowa | Boone | 40 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Dawson Dam | Iowa | Des Moines | 40 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Pony Creek Watershed Site 24 | Iowa | Mills | 40 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Coberly/Swenson Dam | Iowa | Monona | 40 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Weber Creek Subwatershed Site M-17052 | Iowa | Woodbury | 40 | Low | Not Rated | 1956 | Fire Protection, Stock, Or ... |
| Beach Dam | Iowa | Henry | 40 | Low | Not Rated | 1975 | Recreation |
| Vande Stroet Dam | Iowa | Sioux | 40 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Sun Valley Lake Sediment Basin | Iowa | Ringgold | 40 | Significant | - | 2019 | Other |
| Mill Picayune Watershed Site M-27-1 | Iowa | Crawford | 40 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-24-14 | Iowa | Shelby | 40 | Significant | Satisfactory | 1961 | Fire Protection, Stock, Or ... |
| Little Beaver Subwatershed M-16730 | Iowa | Woodbury | 40 | Low | Not Rated | 1957 | Fire Protection, Stock, Or ... |
| Mc Fadden Dam | Iowa | Clarke | 40 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| White Dam | Iowa | Des Moines | 40 | Low | Not Rated | 1988 | Fire Protection, Stock, Or ... |
| Marion County Roadgrade Dam 17-76-18 | Iowa | Marion | 40 | Significant | Poor | 1965 | Other |
| Louisa County Raodgrade Dam 36-73-3 | Iowa | Louisa | 40 | Low | Not Rated | 2002 | Grade Stabilization |
| Mosquito of Harrison Watershed Site 7-4 | Iowa | Harrison | 40 | Low | Not Rated | 1993 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-6 | Iowa | Shelby | 40 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Waubonsie Cr. Watershed Site 39 | Iowa | Mills | 40 | Low | Not Rated | 1983 | Fire Protection, Stock, Or ... |
| Gant Creek Watershed Site C-3 | Iowa | Plymouth | 40 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Walling Subwatershed Sta 99+70 #1 | Iowa | Woodbury | 40 | Low | Not Rated | 1953 | Other |
| Harmony Creek Watershed Site 7 | Iowa | Harrison | 40 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site N-13-2 | Iowa | Harrison | 40 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Westside Subwatershed Site 2-1 | Iowa | Ida | 40 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Wolf Creek Subwatershed Site 5a-1 | Iowa | Woodbury | 40 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Dutch Hollow Subwatershed Site 1-2 | Iowa | Woodbury | 40 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Van Sickle Dam | Iowa | Boone | 40 | Low | Not Rated | 1995 | 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.