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 |
|---|---|---|---|---|---|---|---|
| Reed Subwatershed Sta 41+45 #8 | Iowa | Monona | 42 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Schoening Dam | Iowa | Mills | 42 | Low | Not Rated | 1945 | Fire Protection, Stock, Or ... |
| Thorn Tree Dam | Iowa | Warren | 42 | Low | Not Rated | 1997 | Recreation |
| Iowa Noname40 | Iowa | Pottawattamie | 42 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Big Coon Subwatershed Site D-2-1 | Iowa | Woodbury | 42 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| Woodbury County Roadgrade Dam 36-86-42 | Iowa | Woodbury | 42 | Significant | Satisfactory | 1990 | Other |
| Mill Picayune Watershed Site N-3 | Iowa | Harrison | 42 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Bitter Creek Subwatershed Site 3-1 | Iowa | Ida | 42 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Charles Woods Lake Dam | Iowa | Monona | 42 | Low | Not Rated | 1974 | Recreation |
| Mill Picayune Watershed Site D-3 | Iowa | Harrison | 42 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Black Dam | Iowa | Story | 42 | Low | Not Rated | 1980 | Fire Protection, Stock, Or ... |
| Wohlers Dam | Iowa | Pottawattamie | 42 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Mc Intosh Dam | Iowa | Harrison | 42 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Rush Dam | Iowa | Warren | 42 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Oakridge Lake Estates Dam | Iowa | Johnson | 42 | Low | Not Rated | 1977 | Recreation |
| Bluff Creek Reclamation Dam | Iowa | Monroe | 42 | Low | Not Rated | 2004 | Recreation |
| Banks Dam | Iowa | Plymouth | 42 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Zellmer Subwatershed Site J-1a | Iowa | Woodbury | 42 | Low | Not Rated | 2002 | Flood Risk Reduction |
| Dutch Hollow Subwatershed Site M-3 | Iowa | Woodbury | 42 | Low | Not Rated | 1984 | Fire Protection, Stock, Or ... |
| Davis-Battle Cr. Watershed Site H-3 | Iowa | Monona | 42 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Mucky Creek Subwatershed Sta 19+20 | Iowa | Monona | 42 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Zellmer Subwtrshd Sta 31+70 #M | Iowa | Woodbury | 42 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Little Whiskey Subwatershed Site M-2 | Iowa | Woodbury | 42 | Significant | Satisfactory | 1990 | Fire Protection, Stock, Or ... |
| Turkey Cr Watershed Site 55d | Iowa | Cass | 42 | Significant | Satisfactory | 1994 | Flood Risk Reduction |
| Greenfield Reservoir Dam | Iowa | Adair | 42 | High | Satisfactory | 1979 | Water Supply |
| Weber Creek Subwatershed Site 2-3225 | Iowa | Woodbury | 42 | Low | Not Rated | 1955 | Fire Protection, Stock, Or ... |
| Dickman Subwatershed Site M-2 | Iowa | Woodbury | 42 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| West Douglas Watershed Site L-7 | Iowa | Adams | 42 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Jefferson Park Watershed Site 3 | Iowa | Wapello | 42 | High | Satisfactory | 1976 | Flood Risk Reduction |
| Pierce Creek No 1 Watershed Site 10 | Iowa | Page | 42 | Significant | Satisfactory | 1969 | Fire Protection, Stock, Or ... |
| North Pigeon Cr Watershed Site 7-1 | Iowa | Pottawattamie | 42 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Bergstrom Dam | Iowa | Boone | 42 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Dane Ridge Watershed Site C-1 | Iowa | Crawford | 42 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Zaugg Dam | Iowa | Pocahontas | 42 | Low | Poor | 1998 | Flood Risk Reduction |
| Held Watershed Site D-7 | Iowa | Plymouth | 42 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Twin Anchors Lake Dam | Iowa | Story | 42 | Low | Not Rated | 1960 | Recreation |
| Goeser Dam | Iowa | Crawford | 42 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Little Paint Creek Watershed Site 206a | Iowa | Allamakee | 42 | Low | Not Rated | 2005 | Flood Risk Reduction |
| Waubonsie Cr. Watershed Site M-1 | Iowa | Mills | 42 | Significant | Satisfactory | 1978 | Other |
| Wayne Co. Roadgrade Dam 21-67-22 | Iowa | Wayne | 42 | Significant | Satisfactory | 1996 | Other |
| Wagner Dam | Iowa | Des Moines | 42 | Low | Not Rated | 1986 | Fire Protection, Stock, Or ... |
| Lake Keomah Dam | Iowa | Mahaska | 42 | Significant | Satisfactory | 1935 | Recreation |
| Harper Century Farm Dam | Iowa | Harrison | 42 | Low | Not Rated | 2011 | Flood Risk Reduction |
| Burkhart Dam | Iowa | Harrison | 42 | Low | Not Rated | 2010 | Flood Risk Reduction |
| Good/Johnson Dam | Iowa | Mills | 42 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Dutch Hollow Subwatershed Site 4-1 | Iowa | Woodbury | 42 | Low | Not Rated | 1984 | Fire Protection, Stock, Or ... |
| Swanger Dam | Iowa | Woodbury | 42 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Hull Reclamation Site 10 | Iowa | Mahaska | 42 | Low | Not Rated | 1988 | Recreation |
| Daly Dam | Iowa | Monona | 42 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Windy Hill Subwatershed Site 3-2 | Iowa | Woodbury | 42 | Low | Not Rated | 1975 | 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.