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 |
|---|---|---|---|---|---|---|---|
| Ridgley Dam | Iowa | Crawford | 30 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Soap Creek Watershed Site 4-86 | Iowa | Appanoose | 30 | Low | Not Rated | 2010 | Flood Risk Reduction |
| Greene County Roadgrade Dam 28-85-32 | Iowa | Greene | 30 | Low | Not Rated | 1986 | Other |
| Turkey Cr Watershed Site 10-58 | Iowa | Cass | 30 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Johnston Dam | Iowa | Jasper | 30 | Significant | Not Rated | 2005 | Fire Protection, Stock, Or ... |
| Iowa Noname94 | Iowa | Wayne | 30 | Low | Not Rated | 1980 | Other |
| Hansen Farms Dam | Iowa | Ringgold | 30 | Low | Not Rated | 2001 | Fire Protection, Stock, Or ... |
| Neustrom Subwatershed Site M-1 | Iowa | Woodbury | 30 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Rainbow Lake Dam | Iowa | Tama | 30 | Low | Not Rated | 1952 | Recreation |
| Twelve Mile Creek Watershed Site 35-2 | Iowa | Union | 30 | Low | Not Rated | 1986 | Fire Protection, Stock, Or ... |
| Van Den Broek Dam | Iowa | Marion | 30 | Low | Not Rated | 2004 | Fire Protection, Stock, Or ... |
| Wolf Creek Subwatershed Site M-2 | Iowa | Woodbury | 30 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Parnell Creek Subwatershed Site M-6 | Iowa | Woodbury | 30 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Simon Run Watershed Site 5-2 | Iowa | Pottawattamie | 30 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Timberman Dam | Iowa | Pottawattamie | 30 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Ford Dam | Iowa | Warren | 30 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Mc Call Subwatershed Site M-3 | Iowa | Monona | 30 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Williams Dam | Iowa | Adair | 30 | Low | Not Rated | 2003 | Fire Protection, Stock, Or ... |
| Duer Dam | Iowa | Monroe | 30 | Low | Not Rated | 2000 | Grade Stabilization |
| Roeder Dam | Iowa | Tama | 30 | Low | Not Rated | 1996 | Fire Protection, Stock, Or ... |
| Leonard Dam | Iowa | Johnson | 30 | Low | Not Rated | 2001 | Fire Protection, Stock, Or ... |
| Holsapple Dam | Iowa | Van Buren | 30 | Low | Not Rated | 2000 | Fire Protection, Stock, Or ... |
| Barber Hollow Subwtrshed Site 5-H-3865 | Iowa | Monona | 30 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Ganzhorn Dam | Iowa | Harrison | 30 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Nilan Dam | Iowa | Pottawattamie | 30 | Low | Not Rated | 1962 | Fire Protection, Stock, Or ... |
| Sidles Dam | Iowa | Appanoose | 30 | Low | Not Rated | 1984 | Fire Protection, Stock, Or ... |
| Lannom Dam | Iowa | Poweshiek | 30 | Low | Not Rated | 1990 | Fire Protection, Stock, Or ... |
| Hopkins Dam | Iowa | Davis | 30 | Low | Not Rated | 1962 | Fire Protection, Stock, Or ... |
| Beener Dam | Iowa | Warren | 30 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Paulsen Dam | Iowa | Audubon | 30 | Low | Not Rated | 1975 | Fire Protection, Stock, Or ... |
| Sheckler Dam | Iowa | Jefferson | 30 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Overmeyer Dam | Iowa | Adair | 30 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Halliday Dam | Iowa | Page | 30 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Davids Creek Watershed Site 14-2 | Iowa | Audubon | 30 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Gant Creek Watershed Site D-6 | Iowa | Plymouth | 30 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Phipps Dam | Iowa | Polk | 30 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Bear Creek Watershed Site 51 | Iowa | Winneshiek | 30 | Low | Not Rated | 2005 | Flood Risk Reduction |
| East Fork Grand River Watershed Site E-51 | Iowa | Ringgold | 30 | Low | Not Rated | 2006 | Flood Risk Reduction |
| Davis Dam | Iowa | Monroe | 30 | Low | Not Rated | 2004 | Grade Stabilization |
| Troublesome Cr Watershed Site 42-1 | Iowa | Audubon | 30 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Kamerick Road Structure | Iowa | Monroe | 30 | Low | Not Rated | 2001 | Grade Stabilization |
| Duffield Dam | Iowa | Davis | 30 | Low | Not Rated | 1982 | Fire Protection, Stock, Or ... |
| Pleasant Valley Subwtrshd #2 Sta 50+00 | Iowa | Ida | 30 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Schneider Bros Dam | Iowa | Lucas | 30 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Randolph Dam | Iowa | Van Buren | 30 | Low | Not Rated | 2000 | Fire Protection, Stock, Or ... |
| Troublesome Cr Watershed Site 50-2 | Iowa | Audubon | 30 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Dyson Dam | Iowa | Monroe | 30 | Low | Not Rated | 1991 | Fire Protection, Stock, Or ... |
| Pfieffer Dam | Iowa | Taylor | 30 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Norlin Dam | Iowa | Jones | 30 | Low | Not Rated | 2000 | Fire Protection, Stock, Or ... |
| Homepond Dam | Iowa | Decatur | 30 | Significant | Fair | 1920 | Water Supply |
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.