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 |
|---|---|---|---|---|---|---|---|
| Longinaker Dam | Iowa | Fremont | 27 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Hopkins Dam | Iowa | Davis | 27 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Faber Trust Dam | Iowa | Wayne | 27 | Low | Not Rated | 1994 | Fire Protection, Stock, Or ... |
| Nepple Dam | Iowa | Davis | 27 | Low | Not Rated | 2000 | Fire Protection, Stock, Or ... |
| Shaw Dam | Iowa | Henry | 27 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Olmstead Dam | Iowa | Polk | 27 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Bierce Dam | Iowa | Clarke | 27 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Anderson Dam | Iowa | Buena Vista | 27 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Illum Dam | Iowa | Marshall | 27 | Low | Not Rated | 2002 | Fire Protection, Stock, Or ... |
| Carson Dam | Iowa | Johnson | 27 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Krogmeier Dam | Iowa | Jefferson | 27 | Low | - | 2023 | Grade Stabilization |
| Linn Dam | Iowa | Adair | 27 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Arkema Dam #2 | Iowa | Marion | 27 | Low | Not Rated | 2005 | Flood Risk Reduction |
| Bernstein Dam | Iowa | Poweshiek | 27 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Dozark Dam | Iowa | Crawford | 27 | Low | Not Rated | 1962 | Other |
| Johnson Dam | Iowa | Davis | 27 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Leland Shelton Dam | Iowa | Clarke | 27 | Low | Not Rated | 2016 | Grade Stabilization |
| Garst Dam | Iowa | Guthrie | 27 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Reichard Dam | Iowa | Story | 27 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Snyder Dam | Iowa | Van Buren | 27 | Low | Not Rated | 2004 | Fire Protection, Stock, Or ... |
| Paulson Dam | Iowa | Muscatine | 27 | Low | Not Rated | 1982 | Fire Protection, Stock, Or ... |
| Van Roekel Dam | Iowa | Poweshiek | 27 | Low | Not Rated | 1996 | Fire Protection, Stock, Or ... |
| Iowa Noname66 | Iowa | Buena Vista | 27 | Low | Not Rated | 1975 | Fire Protection, Stock, Or ... |
| Iowa Noname30 | Iowa | Marion | 27 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Van Fossen Dam | Iowa | Page | 27 | Low | Not Rated | 1975 | Fire Protection, Stock, Or ... |
| Crystal Lake Dam | Iowa | Lucas | 27 | Significant | Fair | 1915 | Recreation |
| Agri-Development Dam | Iowa | Ringgold | 27 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Andriano Dam | Iowa | Warren | 27 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Decorah Lower Milldam | Iowa | Winneshiek | 27 | Low | Not Rated | 1973 | Recreation |
| Dingeman Dam | Iowa | Marion | 27 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Putz Dam | Iowa | Warren | 27 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Davison Dam | Iowa | Guthrie | 27 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Gannon Dam | Iowa | Jasper | 27 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Miller-Main Dam | Iowa | Union | 27 | Low | Not Rated | 1990 | Fire Protection, Stock, Or ... |
| Iowa Noname25 | Iowa | Keokuk | 27 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Eichelberger Dam | Iowa | Washington | 27 | Low | Not Rated | 1996 | Fire Protection, Stock, Or ... |
| Van Veldhuizen Dam | Iowa | Mahaska | 27 | Low | Not Rated | 1977 | Recreation |
| Nikkel Dam | Iowa | Poweshiek | 27 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Miksch Dam | Iowa | Washington | 27 | Low | - | 2023 | Grade Stabilization |
| Wheaton Dam | Iowa | Davis | 27 | Low | Not Rated | - | Flood Risk Reduction |
| Brarada Family Farms Dam | Iowa | Madison | 27 | Low | - | 2019 | Grade Stabilization |
| Martin Dam | Iowa | Dallas | 27 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Ridinger Dam | Iowa | Union | 27 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Leverson Dam | Iowa | Decatur | 27 | Low | Not Rated | 1991 | Fire Protection, Stock, Or ... |
| Deal Dam | Iowa | Greene | 27 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Anderson/Timmerman Dam | Iowa | Adams | 27 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Appanoose County Roadgrade | Iowa | Appanoose | 27 | Low | Not Rated | 1988 | Other |
| Moller/Frahm Dam | Iowa | Crawford | 27 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Loewe Dam | Iowa | Fremont | 27 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Maynes Grove West Dam | Iowa | Franklin | 27 | Low | Not Rated | 1992 | Recreation |
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.