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 |
|---|---|---|---|---|---|---|---|
| Sheckler Dam | Iowa | Jefferson | 30 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Paulsen Dam | Iowa | Audubon | 30 | Low | Not Rated | 1975 | Fire Protection, Stock, Or ... |
| Beener Dam | Iowa | Warren | 30 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Hopkins Dam | Iowa | Davis | 30 | Low | Not Rated | 1962 | Fire Protection, Stock, Or ... |
| Lannom Dam | Iowa | Poweshiek | 30 | Low | Not Rated | 1990 | Fire Protection, Stock, Or ... |
| Sidles Dam | Iowa | Appanoose | 30 | Low | Not Rated | 1984 | Fire Protection, Stock, Or ... |
| Nilan Dam | Iowa | Pottawattamie | 30 | Low | Not Rated | 1962 | Fire Protection, Stock, Or ... |
| Ganzhorn Dam | Iowa | Harrison | 30 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Barber Hollow Subwtrshed Site 5-H-3865 | Iowa | Monona | 30 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Holsapple Dam | Iowa | Van Buren | 30 | Low | Not Rated | 2000 | Fire Protection, Stock, Or ... |
| Leonard Dam | Iowa | Johnson | 30 | Low | Not Rated | 2001 | Fire Protection, Stock, Or ... |
| Roeder Dam | Iowa | Tama | 30 | Low | Not Rated | 1996 | Fire Protection, Stock, Or ... |
| Duer Dam | Iowa | Monroe | 30 | Low | Not Rated | 2000 | Grade Stabilization |
| Williams Dam | Iowa | Adair | 30 | Low | Not Rated | 2003 | Fire Protection, Stock, Or ... |
| Mc Call Subwatershed Site M-3 | Iowa | Monona | 30 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Ford Dam | Iowa | Warren | 30 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Timberman Dam | Iowa | Pottawattamie | 30 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Simon Run Watershed Site 5-2 | Iowa | Pottawattamie | 30 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Parnell Creek Subwatershed Site M-6 | Iowa | Woodbury | 30 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Wolf Creek Subwatershed Site M-2 | Iowa | Woodbury | 30 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Van Den Broek Dam | Iowa | Marion | 30 | Low | Not Rated | 2004 | Fire Protection, Stock, Or ... |
| Twelve Mile Creek Watershed Site 35-2 | Iowa | Union | 30 | Low | Not Rated | 1986 | Fire Protection, Stock, Or ... |
| Rainbow Lake Dam | Iowa | Tama | 30 | Low | Not Rated | 1952 | Recreation |
| Neustrom Subwatershed Site M-1 | Iowa | Woodbury | 30 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Hansen Farms Dam | Iowa | Ringgold | 30 | Low | Not Rated | 2001 | Fire Protection, Stock, Or ... |
| Iowa Noname94 | Iowa | Wayne | 30 | Low | Not Rated | 1980 | Other |
| Johnston Dam | Iowa | Jasper | 30 | Significant | Not Rated | 2005 | Fire Protection, Stock, Or ... |
| Turkey Cr Watershed Site 10-58 | Iowa | Cass | 30 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Greene County Roadgrade Dam 28-85-32 | Iowa | Greene | 30 | Low | Not Rated | 1986 | Other |
| Soap Creek Watershed Site 4-86 | Iowa | Appanoose | 30 | Low | Not Rated | 2010 | Flood Risk Reduction |
| Ridgley Dam | Iowa | Crawford | 30 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Earl Anderson Dam | Iowa | Dallas | 30 | Low | Satisfactory | 1996 | Fire Protection, Stock, Or ... |
| Twelve Mile Creek Watershed Site 62-4 | Iowa | Union | 30 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Malcom Dam | Iowa | Poweshiek | 30 | Low | Not Rated | 2006 | Fire Protection, Stock, Or ... |
| Wilhelmi Dam | Iowa | Dallas | 30 | Low | Not Rated | 2002 | Fire Protection, Stock, Or ... |
| Nyswonger Dam | Iowa | Warren | 30 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Gatton Dam | Iowa | Mahaska | 30 | Low | Not Rated | 1982 | Fire Protection, Stock, Or ... |
| Mc Donald Dam | Iowa | Union | 30 | Low | Not Rated | 2001 | Fire Protection, Stock, Or ... |
| Arlington Subwatershed Sta 26+80 #12 | Iowa | Plymouth | 30 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Hinze Dam | Iowa | Fremont | 30 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Zellmer Subwtrshd Sta 54+60 #B1 | Iowa | Woodbury | 30 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Andrew Dam | Iowa | Decatur | 30 | Low | Not Rated | 1983 | Fire Protection, Stock, Or ... |
| Courcier Dam | Iowa | Montgomery | 30 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Fulton Dam | Iowa | Lucas | 30 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Wenger Subwatershed M 130+73 | Iowa | Woodbury | 30 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Stearns Dam | Iowa | Clarke | 30 | Low | Not Rated | 1993 | Fire Protection, Stock, Or ... |
| Berryman | Iowa | Davis | 30 | Low | Not Rated | - | Flood Risk Reduction |
| Ammons Roadgrade Structure | Iowa | Monroe | 30 | Low | Not Rated | 2004 | Grade Stabilization |
| Whispering Pines Dam | Iowa | Audubon | 30 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Miller Dam | Iowa | Crawford | 30 | Low | Not Rated | 1944 | 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.