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 |
|---|---|---|---|---|---|---|---|
| Turner Dam | Iowa | Crawford | 42 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Wayne Co. Roadgrade Dam 21-67-22 | Iowa | Wayne | 42 | Significant | Satisfactory | 1996 | Other |
| Waubonsie Cr. Watershed Site M-1 | Iowa | Mills | 42 | Significant | Satisfactory | 1978 | Other |
| Lake Keomah Dam | Iowa | Mahaska | 42 | Significant | Satisfactory | 1935 | Recreation |
| Turkey Cr Watershed Site 55d | Iowa | Cass | 42 | Significant | Satisfactory | 1994 | Flood Risk Reduction |
| Daly Dam | Iowa | Monona | 42 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Twin Anchors Lake Dam | Iowa | Story | 42 | Low | Not Rated | 1960 | Recreation |
| Mucky Creek Subwatershed Sta 19+20 | Iowa | Monona | 42 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Dane Ridge Watershed Site B-2 | Iowa | Crawford | 42 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Brummer Dam | Iowa | Harrison | 41 | Low | Not Rated | 1945 | Fire Protection, Stock, Or ... |
| Reed Subwatershed Site 13c-2232 | Iowa | Monona | 41 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Big Coon Subwatershed Site 3-3 | Iowa | Woodbury | 41 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| Strunk Dam | Iowa | Lee | 41 | Low | Not Rated | 1900 | Fire Protection, Stock, Or ... |
| Weber Creek Subwatershed Site 5-4460 | Iowa | Woodbury | 41 | Low | Not Rated | 1956 | Fire Protection, Stock, Or ... |
| Scharnberg Dam | Iowa | Warren | 41 | Low | Not Rated | 2007 | Recreation |
| Reinert Dam | Iowa | Mills | 41 | Low | Not Rated | 1998 | Fire Protection, Stock, Or ... |
| Jett Subwatershed Site M-4 | Iowa | Woodbury | 41 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site P-1 | Iowa | Shelby | 41 | Low | Not Rated | 1984 | Fire Protection, Stock, Or ... |
| Good/Wanamaker Dam | Iowa | Fremont | 41 | Low | Not Rated | 1962 | Fire Protection, Stock, Or ... |
| Cleveland Dam | Iowa | Harrison | 41 | Low | Not Rated | 2011 | Flood Risk Reduction |
| Schlensig Dam | Iowa | Crawford | 41 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Simon Run Watershed Site 4-2 | Iowa | Pottawattamie | 41 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Hound Dog Watershed Site B-2 | Iowa | Fremont | 41 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Schoenewe Dam | Iowa | Des Moines | 41 | High | Poor | 1978 | Recreation |
| Bacon Creek Watershed Site C-1 | Iowa | Woodbury | 41 | High | Satisfactory | 1976 | Flood Risk Reduction |
| Polk County Roadgrade Dam 21-78-22 | Iowa | Polk | 41 | Low | Not Rated | 1992 | Other |
| Big Park Watershed Site A-3 | Iowa | Crawford | 41 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| West Wolf Creek Subwatershed Site 35 | Iowa | Woodbury | 41 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| Dane Ridge Watershed Site D-1-7 | Iowa | Crawford | 41 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Powers Dam | Iowa | Mills | 41 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Crawford CO Roadgrade Dam 34-84-39 | Iowa | Crawford | 41 | Low | Not Rated | 2002 | Grade Stabilization |
| Winner Dam | Iowa | Harrison | 41 | Low | Not Rated | 2011 | Flood Risk Reduction |
| Yellowbanks Dam | Iowa | Polk | 41 | Low | Satisfactory | 1986 | Recreation |
| Simpson Creek Watershed Site 4 | Iowa | Fremont | 41 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Dutch Hollow Subwatershed Site 1a-1 | Iowa | Woodbury | 41 | Low | Not Rated | 1991 | Fire Protection, Stock, Or ... |
| Gross/Freund Dam | Iowa | Shelby | 41 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Blockton Watershed Site S-5 | Iowa | Taylor | 41 | Significant | Satisfactory | 1993 | Flood Risk Reduction |
| Wm. Seymour Dam | Iowa | Warren | 41 | Low | Not Rated | 1981 | Fire Protection, Stock, Or ... |
| West Lakes Office Park Dam | Iowa | Polk | 41 | High | Satisfactory | 1990 | Flood Risk Reduction |
| Carter Road Stormwater Detention Dam | Iowa | Dubuque | 41 | High | Fair | 2004 | Recreation |
| Collier Dam | Iowa | Harrison | 41 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Sioux Rapids Golf Club Dam | Iowa | Buena Vista | 41 | Low | Not Rated | 1980 | Fire Protection, Stock, Or ... |
| Soap Creek Watershed Site 68-80 | Iowa | Monroe | 41 | Low | Not Rated | 2009 | Flood Risk Reduction |
| Ryan Henschal Watershed Site F-2 | Iowa | Pottawattamie | 41 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| East Lake Dam | Iowa | Clarke | 41 | Significant | Satisfactory | 1915 | Water Supply |
| Hound Dog Watershed Site B-6 | Iowa | Fremont | 41 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Long Dam | Iowa | Warren | 41 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Hound Dog Watershed Site B-4 | Iowa | Fremont | 41 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Slaughter Flood Control Dam | Iowa | Clayton | 41 | High | Fair | 1938 | Flood Risk Reduction |
| Cord Subwatershed M-7234 | Iowa | Woodbury | 41 | Low | Not Rated | 1957 | 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.