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 |
|---|---|---|---|---|---|---|---|
| Granfield/Westrum Dam | Iowa | Union | 28 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Whispering Pines Dam | Iowa | Muscatine | 28 | Significant | Fair | 2006 | Recreation |
| Brown Dam | Iowa | Union | 28 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Fleming Ii Dam | Iowa | Tama | 28 | Low | - | 2021 | Flood Risk Reduction |
| Dennis Koenig Dam | Iowa | Winneshiek | 28 | Low | - | 2013 | Grade Stabilization |
| South Lake Dam | Iowa | Linn | 28 | Low | Not Rated | 1993 | Fire Protection, Stock, Or ... |
| Smith (Bill) Dam | Iowa | Union | 28 | Low | Not Rated | 2013 | Grade Stabilization |
| Honey Creek F-1 | Iowa | Lucas | 28 | Low | - | 1955 | Flood Risk Reduction |
| Lorenz Dam | Iowa | Henry | 28 | Low | Not Rated | 2012 | Recreation |
| Idot Roadgrade Dam 32-88-25 | Iowa | Hamilton | 28 | Low | Not Rated | 1977 | Other |
| Paul Graves Dam | Iowa | Clarke | 28 | Low | Not Rated | 2014 | Grade Stabilization |
| Monroe CO Roadgrade Dam 29-72-18 | Iowa | Monroe | 28 | Low | Not Rated | 1983 | Other |
| Iowa Dnr Noname 1 | Iowa | Crawford | 28 | Low | Not Rated | 2006 | Fish and Wildlife Pond |
| South Magnolia Watershed Site 3 | Iowa | Harrison | 28 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Lemke Dam | Iowa | Adair | 28 | Low | Not Rated | 1970 | Recreation |
| Mike Mikkelson Subwatershed 11-3227 | Iowa | Monona | 28 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Kent Park 1 East Dam | Iowa | Johnson | 28 | Low | Not Rated | 1997 | Grade Stabilization |
| Sheley/King Dam | Iowa | Taylor | 28 | Low | Not Rated | 1980 | Fire Protection, Stock, Or ... |
| Croy Subwatershed Site 22200 | Iowa | Monona | 28 | Low | Not Rated | 1951 | Fire Protection, Stock, Or ... |
| Hacklebarney - Commers Dam | Iowa | Montgomery | 28 | Low | Not Rated | 2005 | Grade Stabilization |
| Randy Grgurich Dam | Iowa | Lucas | 28 | Low | Not Rated | 2014 | Grade Stabilization |
| Dane Ridge Watershed Site C | Iowa | Crawford | 28 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Wakonda Country Club Dam | Iowa | Polk | 28 | Low | Not Rated | 1995 | Recreation |
| Turkey Creek Watershed Site 1-1 | Iowa | Cass | 28 | Low | Not Rated | 2006 | Flood Risk Reduction |
| Cord Subwatershed M-10464 | Iowa | Woodbury | 28 | Low | Not Rated | 1957 | Other |
| West Wolf Creek Subwatershed Site 34 | Iowa | Woodbury | 28 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| Arcola Subwatershed Site 1-5084 | Iowa | Monona | 28 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Big Wyacondah Watershed Site 7 | Iowa | Davis | 28 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Turkey Cr Watershed Site 19-27 | Iowa | Cass | 28 | Low | Not Rated | 1990 | Fire Protection, Stock, Or ... |
| Dutch Hollow Subwatershed Site M-2 | Iowa | Woodbury | 28 | Low | Not Rated | 1984 | Fire Protection, Stock, Or ... |
| Jefferson County Roadgrade Dam 25-73-10 | Iowa | Jefferson | 28 | Low | Not Rated | 2005 | Grade Stabilization |
| Louisa County Roadgrade Dam 24-74-3 | Iowa | Louisa | 28 | Low | Not Rated | 1989 | Other |
| Gallup Subwatershed 4-3538 | Iowa | Monona | 28 | Low | Not Rated | 1954 | Fire Protection, Stock, Or ... |
| Little River Watershed Site 58 | Iowa | Decatur | 28 | Low | Not Rated | 2006 | Flood Risk Reduction |
| Big Wyacondah Watershed Site 16 | Iowa | Davis | 28 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Hound Dog Watershed Site B-9 | Iowa | Fremont | 28 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Blockton Watershed Site K-1 | Iowa | Taylor | 28 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| College Corner Subwatershed Site 4-2 | Iowa | Woodbury | 28 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| East Fork Grand River Watershed Site D-80 | Iowa | Ringgold | 28 | Low | Not Rated | 2006 | Flood Risk Reduction |
| Turkey Cr Watershed Site 10-8 | Iowa | Cass | 28 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Turkey Cr Watershed Site 10-3 | Iowa | Cass | 28 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Blockton Watershed Site J-1 | Iowa | Taylor | 28 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| South Hungerford 2 Watershed Site 5 | Iowa | Plymouth | 28 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Weber Creek Subwatershed Site 9-1900 | Iowa | Woodbury | 28 | Low | Not Rated | 1955 | Fire Protection, Stock, Or ... |
| Anthon Subwatershed M-4001 | Iowa | Woodbury | 28 | Low | Not Rated | 1954 | Fire Protection, Stock, Or ... |
| Mount Ayr Game Area Dam #1 | Iowa | Ringgold | 28 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Woodlands Parkway Dam | Iowa | Polk | 28 | Significant | Fair | 1964 | |
| West Douglas Watershed Site K-1 | Iowa | Adams | 28 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Big Wyacondah Watershed Site 26 | Iowa | Davis | 28 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Anthon Subwatershed 1-2261 | Iowa | Woodbury | 28 | Significant | Fair | 1954 | Other |
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.