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 |
|---|---|---|---|---|---|---|---|
| Johnson Dam | Iowa | Lucas | 31 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Mosquito of Harrison B | Iowa | Harrison | 31 | Low | Not Rated | 1987 | Fire Protection, Stock, Or ... |
| Klopping Dam | Iowa | Jasper | 31 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Johnson Dam | Iowa | Montgomery | 31 | Low | — | 2024 | Grade Stabilization |
| Deal Dam | Iowa | Kossuth | 31 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Iowa Noname100 | Iowa | Madison | 31 | Low | Not Rated | 1991 | Fire Protection, Stock, Or ... |
| Willow Lake Dam | Iowa | Harrison | 31 | Low | Not Rated | 1976 | Debris Control |
| Merrill Dorland Dam | Iowa | Clarke | 31 | Low | Not Rated | 2014 | Grade Stabilization |
| Kuhl Dam | Iowa | Union | 31 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| William Ory Dam | Iowa | Madison | 31 | Low | — | 2018 | Grade Stabilization |
| C & W Investments | Iowa | Appanoose | 31 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Mystic Reservoir Dam | Iowa | Appanoose | 31 | Low | Satisfactory | 1930 | Fire Protection, Stock, Or ... |
| Reel Dam | Iowa | Van Buren | 31 | Low | Not Rated | 1995 | Fire Protection, Stock, Or ... |
| Cramer Farms Dam | Iowa | Union | 31 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Deiber & Shook Dam | Iowa | Crawford | 31 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Axtell Dam | Iowa | Jasper | 31 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Wahlert Dam | Iowa | Audubon | 31 | Low | — | 2023 | Recreation |
| De Heer Reclamation Dam | Iowa | Marion | 31 | Low | Not Rated | 2004 | Recreation |
| Mc Clintic Dam | Iowa | Polk | 31 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Heistand/Erlewine Dam | Iowa | Harrison | 31 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Vershaw Dam | Iowa | Scott | 31 | Low | Fair | 2005 | Recreation |
| Darbyshire Dam | Iowa | Henry | 31 | Low | Not Rated | 2009 | Grade Stabilization |
| Shipley Dam | Iowa | Montgomery | 31 | Low | — | 2023 | Grade Stabilization |
| Young Dam | Iowa | Polk | 31 | Low | Not Rated | 2004 | Fire Protection, Stock, Or ... |
| Weselmann Dam | Iowa | Winneshiek | 31 | Low | — | 2021 | Flood Risk Reduction |
| Justice Dam | Iowa | Clarke | 31 | Low | Not Rated | 1995 | Fire Protection, Stock, Or ... |
| Sulsberger Dam | Iowa | Woodbury | 31 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Knoxville Pond Dam | Iowa | Marion | 31 | Low | Not Rated | 1961 | Recreation |
| Baker Dam | Iowa | Poweshiek | 31 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| General Manufacturing Dam | Iowa | Warren | 31 | Low | Not Rated | 1995 | Fire Protection, Stock, Or ... |
| Gross Dam | Iowa | Adair | 31 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Beauchamp Dam | Iowa | Jefferson | 31 | Low | Not Rated | 2001 | Fire Protection, Stock, Or ... |
| Humeston Reservoir Dam | Iowa | Wayne | 31 | Significant | Poor | 1916 | Water Supply |
| Renaud Dam | Iowa | Poweshiek | 31 | Significant | Not Rated | 1986 | Fire Protection, Stock, Or ... |
| Carter Dam | Iowa | Des Moines | 31 | Low | Not Rated | 1986 | Fire Protection, Stock, Or ... |
| Trotter Dam | Iowa | Jasper | 31 | Low | Not Rated | 1971 | Recreation |
| Sloan Dam | Iowa | Davis | 31 | Low | Not Rated | 1975 | Fire Protection, Stock, Or ... |
| Friesen Dam | Iowa | Ringgold | 31 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Rhoten Dam | Iowa | Dallas | 31 | Low | — | 2003 | Grade Stabilization |
| Burgher Dam | Iowa | Appanoose | 31 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Cook Dam | Iowa | Dallas | 31 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Gleich Dam | Iowa | Wapello | 31 | Low | Not Rated | 1990 | Fire Protection, Stock, Or ... |
| Weimann Dam | Iowa | Audubon | 31 | Low | Not Rated | 1980 | Fire Protection, Stock, Or ... |
| Treynor Farm Supply Dam | Iowa | Pottawattamie | 31 | Low | Not Rated | 2004 | Fire Protection, Stock, Or ... |
| Heston/Johnson Dam | Iowa | Lucas | 31 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Mc Creedy Dam | Iowa | Jefferson | 31 | Low | Not Rated | 2002 | Fire Protection, Stock, Or ... |
| Forest Lake Camp Dam | Iowa | Wapello | 31 | Low | Not Rated | 1953 | Recreation |
| Arp Dam | Iowa | Johnson | 31 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Pollmiller Park Dam | Iowa | Lee | 31 | Low | Not Rated | 1971 | Recreation |
| England Dam | Iowa | Wapello | 31 | 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.