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 |
|---|---|---|---|---|---|---|---|
| Lake Ellis Dam | Iowa | Lucas | 38 | Significant | Fair | 1993 | Water Supply |
| Larsen Dam | Iowa | Pottawattamie | 38 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| West Sunnyside Watershed Site A-1 | Iowa | Plymouth | 38 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Held Watershed Site A-3 | Iowa | Plymouth | 38 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Central Holding Co. Dam | Iowa | Carroll | 38 | Low | Not Rated | 1988 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site B-3 | Iowa | Harrison | 38 | High | Satisfactory | 1962 | Flood Risk Reduction |
| Maxwell Dam | Iowa | Woodbury | 38 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Woodbury County Road Dam 8-87-44 | Iowa | Woodbury | 38 | Low | Not Rated | 2001 | Grade Stabilization |
| Kness Dam | Iowa | Monroe | 38 | Low | Not Rated | 1987 | Fire Protection, Stock, Or ... |
| Dane Ridge Watershed Site C-7 | Iowa | Crawford | 38 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Dickman Subwatershed Site 3-1 | Iowa | Woodbury | 38 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Soap Creek Watershed Site 68-33a | Iowa | Monroe | 38 | Low | Not Rated | 2012 | Flood Risk Reduction |
| Anderson Dam | Iowa | Wapello | 38 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| Brauninger Dam | Iowa | Woodbury | 38 | Low | Not Rated | 1996 | Fire Protection, Stock, Or ... |
| Davis-Battle Cr. Watershed Site H-1 | Iowa | Monona | 38 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Cottonwood-Green Valley Subws 50+40 #2 | Iowa | Monona | 38 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Wunschel Dam | Iowa | Ida | 38 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| Gant Creek Watershed Site B-1 | Iowa | Plymouth | 38 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Camp Creek Subwatershed Site M-6a | Iowa | Woodbury | 38 | Low | Not Rated | 1998 | Fire Protection, Stock, Or ... |
| Rooks Dam | Iowa | Hardin | 38 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Dane Ridge Watershed Site C-3 | Iowa | Crawford | 38 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Judge Dam | Iowa | Tama | 38 | Low | Not Rated | 1955 | Recreation |
| Larson Dam | Iowa | Woodbury | 38 | Low | Not Rated | 1998 | Fire Protection, Stock, Or ... |
| Pierce Cr. No. 2 Site L-2 | Iowa | Page | 38 | Low | Not Rated | 1980 | Fire Protection, Stock, Or ... |
| Walker Dam | Iowa | Des Moines | 38 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Baker Subwatershed Site 1-3 | Iowa | Monona | 38 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Campbell Dam | Iowa | Ida | 38 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| Wenger Subwatershed Sta 16+00 #5 | Iowa | Woodbury | 38 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Schwartz Dam | Iowa | Wapello | 38 | Low | Not Rated | 1985 | 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 |
| Woodbury County Roadgrade Dam 30-88-43 | Iowa | Woodbury | 38 | Low | Not Rated | 1999 | Other |
| Tate Dam | Iowa | Crawford | 38 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Phillips Subwatershed Site M-17312 | Iowa | Monona | 38 | Low | Not Rated | 1956 | Fire Protection, Stock, Or ... |
| Nowak Dam | Iowa | Harrison | 38 | Low | Not Rated | 2001 | Grade Stabilization |
| Twelve Mile Creek Watershed Site D-35 | Iowa | Union | 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 ... |
| Behrendt Dam | Iowa | Monona | 38 | Low | Not Rated | 2014 | Grade Stabilization |
| Bitter Creek Subwatershed Site E-1 | Iowa | Ida | 38 | Low | Not Rated | 1995 | Fire Protection, Stock, Or ... |
| Harkrader Dam | Iowa | Dallas | 38 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Muscatine County Roadgrade Dam 14-77-1e | Iowa | Muscatine | 38 | Significant | Fair | 1971 | Other |
| Turkey Cr Watershed Site 53-3 | Iowa | Cass | 38 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Southwest Iowa Egg Cooperative Dam | Iowa | Cass | 38 | Low | Not Rated | 1999 | Water Supply |
| Uhl Dam | Iowa | Woodbury | 38 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Jasper County Roadgrade Dam 15-81-20 | Iowa | Jasper | 38 | Low | Not Rated | 2005 | Grade Stabilization |
| Iowa Noname8 | Iowa | Crawford | 38 | Low | Not Rated | 1964 | Recreation |
| Mill Picayune Watershed Site N-28-1 | Iowa | Shelby | 38 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-22-13 | Iowa | Shelby | 38 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Mucky Creek Subwatershed Sta 41+70 | Iowa | Monona | 38 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Mc Dowell Dam | Iowa | Wapello | 38 | Low | Not Rated | 1999 | 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.