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 |
|---|---|---|---|---|---|---|---|
| Zellmer Subwtrshd #M 106+26 | Iowa | Woodbury | 39 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Mississippi River Locks and Dam 14 | Iowa | Scott | 39 | Significant | Not Available | 1939 | Navigation |
| Henter Dam | Iowa | Madison | 39 | Low | Not Rated | 1998 | Fire Protection, Stock, Or ... |
| Windy Hill Subwatershed Site 2-1 | Iowa | Woodbury | 39 | Low | Not Rated | 1975 | Fire Protection, Stock, Or ... |
| Ahquabi Dredge Spoil Containment Dam 1a | Iowa | Warren | 39 | Low | Not Rated | 1995 | Debris Control |
| Dane Ridge Watershed Site D-1-6 | Iowa | Crawford | 39 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Reinig Dam | Iowa | Monona | 39 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Troublesome Creek Watershed Site 85-3 | Iowa | Audubon | 39 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| Soap Creek Watershed Site 90-85 | Iowa | Wapello | 39 | Low | Not Rated | 2011 | Flood Risk Reduction |
| Straight Dam | Iowa | Harrison | 39 | Low | Not Rated | 2011 | Flood Risk Reduction |
| Meadow Lake Dam | Iowa | Adair | 39 | Significant | Fair | 1964 | Recreation |
| Roy/Kemmish Dam | Iowa | Harrison | 39 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Ryan Henschal Watershed Site H-1 | Iowa | Pottawattamie | 39 | Low | Not Rated | 1962 | Fire Protection, Stock, Or ... |
| Lawson Subwatershed Site 1-1 | Iowa | Monona | 39 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Union County Roadgrade Dam 29-73-29 | Iowa | Union | 39 | Low | Not Rated | 1993 | Other |
| Neustrom Subwatershed Site M-5 | Iowa | Woodbury | 39 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Badger Creek Watershed Site 30-1 | Iowa | Madison | 39 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Dane Ridge Watershed Site D-1-5 | Iowa | Crawford | 39 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Clark Dam | Iowa | Woodbury | 39 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Gray Dam | Iowa | Montgomery | 39 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Iowa Noname84 | Iowa | Washington | 39 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Twelve Mile Creek Watershed Site D-35 | Iowa | Union | 38 | Low | Not Rated | 1988 | Fire Protection, Stock, Or ... |
| Kruger Dam | Iowa | Greene | 38 | Low | Not Rated | 2013 | Flood Risk Reduction |
| Mucky Creek Subwatershed Site 6-1 | Iowa | Monona | 38 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Mc Aninch Dam | Iowa | Warren | 38 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Theobold Subwatershed 6975 | Iowa | Woodbury | 38 | Low | Not Rated | 1948 | Fire Protection, Stock, Or ... |
| Baker Subwatershed Site 1-3 | Iowa | Monona | 38 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Held Watershed Site A-3 | Iowa | Plymouth | 38 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Huebner Dam | Iowa | Appanoose | 38 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Harkrader Dam | Iowa | Dallas | 38 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site P-47-3 | Iowa | Shelby | 38 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Grimm Dam | Iowa | Louisa | 38 | Low | Not Rated | 1987 | Fire Protection, Stock, Or ... |
| Dickman Subwatershed Site 3-1 | Iowa | Woodbury | 38 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Larsen Dam | Iowa | Pottawattamie | 38 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| English Bench Watershed Site 9 | Iowa | Allamakee | 38 | Low | Unsatisfactory | 1970 | Fire Protection, Stock, Or ... |
| Lindberg Dam | Iowa | Wapello | 38 | Low | Not Rated | 2001 | Fire Protection, Stock, Or ... |
| Stennett-Red Oak Watershed Site 3 | Iowa | Montgomery | 38 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Big Whiskey 1 Subwatershed Site 3-1 | Iowa | Woodbury | 38 | Significant | Fair | 1968 | Fire Protection, Stock, Or ... |
| Rooks Dam | Iowa | Hardin | 38 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Lake Ellis Dam | Iowa | Lucas | 38 | Significant | Fair | 1993 | Water Supply |
| Willow Creek Subwatershed Site M-2 | Iowa | Woodbury | 38 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Thomsen Dam | Iowa | Woodbury | 38 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Ledgewood Creek Watershed Site M-5 | Iowa | Fremont | 38 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Southfork Dam | Iowa | Dallas | 38 | High | Satisfactory | 1988 | Other |
| Campbell Dam | Iowa | Ida | 38 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| Nowak Dam | Iowa | Harrison | 38 | Low | Not Rated | 2001 | Grade Stabilization |
| Bishop/Barrows Dam | Iowa | Madison | 38 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Gant Creek Watershed Site B-1 | Iowa | Plymouth | 38 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Central Holding Co. Dam | Iowa | Carroll | 38 | Low | Not Rated | 1988 | Fire Protection, Stock, Or ... |
| Troublesome Cr Watershed Site 44-1 | Iowa | Audubon | 38 | Low | Not Rated | 1978 | 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.