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 |
|---|---|---|---|---|---|---|---|
| East Fork Grand River Watershed Site B-42 | Iowa | Ringgold | 31 | Low | Not Rated | 2006 | Flood Risk Reduction |
| Frank Dam | Iowa | Adair | 31 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Westside Subwatershed Site 2-2 | Iowa | Ida | 31 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Copper Creek Lake Dam | Iowa | Polk | 31 | Significant | Satisfactory | 1995 | Irrigation |
| Tiefenthaler Dam | Iowa | Crawford | 31 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Troublesome Cr Watershed Site 41-2 | Iowa | Audubon | 31 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Collins Dam | Iowa | Davis | 31 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site S-36-1 | Iowa | Harrison | 31 | Low | Not Rated | 1992 | Fire Protection, Stock, Or ... |
| Anderzhon Dam | Iowa | Fremont | 31 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Pierce Dam | Iowa | Lucas | 31 | Low | Not Rated | 1998 | Fire Protection, Stock, Or ... |
| Randall Dam | Iowa | Johnson | 31 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Woodward Glen Subwatershed Site 5800 | Iowa | Monona | 31 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Walters Creek Watershed Site 15-1 | Iowa | Adams | 31 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-24-15 | Iowa | Shelby | 31 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Big Wyacondah Watershed Site 23 | Iowa | Davis | 31 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Smith Dam | Iowa | Guthrie | 31 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Lyon County Roadgrade Dam 10-98-48 | Iowa | Lyon | 31 | Low | Not Rated | 1988 | Other |
| Badger Creek Watershed Site 48-2 | Iowa | Madison | 31 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Garrett Dam | Iowa | Crawford | 31 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Montie L Hammond Estate Dam | Iowa | Jasper | 31 | Low | Not Rated | 2014 | Grade Stabilization |
| Turkey Cr Watershed Site 39 | Iowa | Cass | 31 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Johnson Dam | Iowa | Montgomery | 31 | Low | - | 2024 | Grade Stabilization |
| Upper Locust Watershed Site L-30 | Iowa | Wayne | 31 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| Justice Dam | Iowa | Clarke | 31 | Low | Not Rated | 1995 | Fire Protection, Stock, Or ... |
| East Fork Grand River Watershed Site B-40 | Iowa | Ringgold | 31 | Low | Not Rated | 2004 | Flood Risk Reduction |
| Renaud Dam | Iowa | Poweshiek | 31 | Significant | Not Rated | 1986 | Fire Protection, Stock, Or ... |
| Wolf Creek Subwatershed Site 5-2 | Iowa | Woodbury | 31 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site A-2 | Iowa | Harrison | 31 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Livingston Dam | Iowa | Taylor | 31 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Pollmiller Park Dam | Iowa | Lee | 31 | Low | Not Rated | 1971 | Recreation |
| Bee Jay Watershed Site 4 | Iowa | Pottawattamie | 31 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Darbyshire Dam | Iowa | Henry | 31 | Low | Not Rated | 2009 | Grade Stabilization |
| Iowa Noname70 | Iowa | Harrison | 31 | Low | Not Rated | 1976 | Debris Control |
| Iowa Noname97 | Iowa | Johnson | 31 | Low | Not Rated | 1991 | Debris Control |
| Heston/Johnson Dam | Iowa | Lucas | 31 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Badger Creek Watershed Site 36-2 | Iowa | Madison | 31 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| General Manufacturing Dam | Iowa | Warren | 31 | Low | Not Rated | 1995 | Fire Protection, Stock, Or ... |
| England Dam | Iowa | Wapello | 31 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Bartlett Dam | Iowa | Crawford | 31 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Carter Dam | Iowa | Des Moines | 31 | Low | Not Rated | 1986 | Fire Protection, Stock, Or ... |
| Baker Dam | Iowa | Poweshiek | 31 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Rhoten Dam | Iowa | Dallas | 31 | Low | - | 2003 | Grade Stabilization |
| Forest Lake Camp Dam | Iowa | Wapello | 31 | Low | Not Rated | 1953 | Recreation |
| Merrill Dorland Dam | Iowa | Clarke | 31 | Low | Not Rated | 2014 | Grade Stabilization |
| Heistand/Erlewine Dam | Iowa | Harrison | 31 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Knoxville Pond Dam | Iowa | Marion | 31 | Low | Not Rated | 1961 | Recreation |
| Cook Dam | Iowa | Dallas | 31 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Weber Creek Subwatershed Site 3-4287 | Iowa | Woodbury | 31 | Low | Not Rated | 1955 | Fire Protection, Stock, Or ... |
| Mc Clintic Dam | Iowa | Polk | 31 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Friesen Dam | Iowa | Ringgold | 31 | Low | Not Rated | 1976 | 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.