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 |
|---|---|---|---|---|---|---|---|
| Twin Anchors Lake Dam | Iowa | Story | 42 | Low | Not Rated | 1960 | Recreation |
| Iowa Noname40 | Iowa | Pottawattamie | 42 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Wagner Dam | Iowa | Des Moines | 42 | Low | Not Rated | 1986 | Fire Protection, Stock, Or ... |
| Hull Reclamation Site 10 | Iowa | Mahaska | 42 | Low | Not Rated | 1988 | Recreation |
| Rush Dam | Iowa | Warren | 42 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Zaugg Dam | Iowa | Pocahontas | 42 | Low | Poor | 1998 | Flood Risk Reduction |
| Zellmer Subwatershed Site J-1a | Iowa | Woodbury | 42 | Low | Not Rated | 2002 | Flood Risk Reduction |
| Little Paint Creek Watershed Site 206a | Iowa | Allamakee | 42 | Low | Not Rated | 2005 | Flood Risk Reduction |
| Bergstrom Dam | Iowa | Boone | 42 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Schlensig Dam | Iowa | Crawford | 41 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Carter Road Stormwater Detention Dam | Iowa | Dubuque | 41 | High | Fair | 2004 | Recreation |
| Cord Subwatershed M-7234 | Iowa | Woodbury | 41 | Low | Not Rated | 1957 | Fire Protection, Stock, Or ... |
| Brummer Dam | Iowa | Harrison | 41 | Low | Not Rated | 1945 | Fire Protection, Stock, Or ... |
| Strunk Dam | Iowa | Lee | 41 | Low | Not Rated | 1900 | Fire Protection, Stock, Or ... |
| Cleveland Dam | Iowa | Harrison | 41 | Low | Not Rated | 2011 | Flood Risk Reduction |
| Yellowbanks Dam | Iowa | Polk | 41 | Low | Satisfactory | 1986 | Recreation |
| Reinert Dam | Iowa | Mills | 41 | Low | Not Rated | 1998 | Fire Protection, Stock, Or ... |
| Powers Dam | Iowa | Mills | 41 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| West Lakes Office Park Dam | Iowa | Polk | 41 | High | Satisfactory | 1990 | Flood Risk Reduction |
| Koski Dam | Iowa | Harrison | 41 | Low | Not Rated | 2011 | Flood Risk Reduction |
| Wm. Seymour Dam | Iowa | Warren | 41 | Low | Not Rated | 1981 | Fire Protection, Stock, Or ... |
| Simpson Creek Watershed Site 4 | Iowa | Fremont | 41 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Bacon Creek Watershed Site C-1 | Iowa | Woodbury | 41 | High | Satisfactory | 1976 | Flood Risk Reduction |
| Gross/Freund Dam | Iowa | Shelby | 41 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Collier Dam | Iowa | Harrison | 41 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Simon Run Watershed Site 4-2 | Iowa | Pottawattamie | 41 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Weber Creek Subwatershed Site 5-4460 | Iowa | Woodbury | 41 | Low | Not Rated | 1956 | Fire Protection, Stock, Or ... |
| Reed Subwatershed Site 13c-2232 | Iowa | Monona | 41 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Sioux Rapids Golf Club Dam | Iowa | Buena Vista | 41 | Low | Not Rated | 1980 | Fire Protection, Stock, Or ... |
| Crawford CO Roadgrade Dam 34-84-39 | Iowa | Crawford | 41 | Low | Not Rated | 2002 | Grade Stabilization |
| Jett Subwatershed Site M-4 | Iowa | Woodbury | 41 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Hound Dog Watershed Site B-1 | Iowa | Fremont | 41 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Grand River Cattle Dam | Iowa | Decatur | 41 | Low | Not Rated | 2007 | Water Supply |
| Mill Picayune Watershed Site P-1 | Iowa | Shelby | 41 | Low | Not Rated | 1984 | Fire Protection, Stock, Or ... |
| East Lake Dam | Iowa | Clarke | 41 | Significant | Satisfactory | 1915 | Water Supply |
| Dane Ridge Watershed Site D-1-7 | Iowa | Crawford | 41 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Mortenson Subwatershed Sta99+92 Main | Iowa | Cherokee | 41 | Low | Not Rated | 1950 | Fire Protection, Stock, Or ... |
| Polk County Roadgrade Dam 21-78-22 | Iowa | Polk | 41 | Low | Not Rated | 1992 | Other |
| Bengal Dam | Iowa | Plymouth | 41 | Low | Not Rated | 1973 | 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 |
| Big Park Watershed Site A-3 | Iowa | Crawford | 41 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Focht & Schindel Dam | Iowa | Plymouth | 41 | High | Fair | 1970 | Fire Protection, Stock, Or ... |
| Big Coon Subwatershed Site 3-3 | Iowa | Woodbury | 41 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| West Wolf Creek Subwatershed Site 35 | Iowa | Woodbury | 41 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| Scharnberg Dam | Iowa | Warren | 41 | Low | Not Rated | 2007 | Recreation |
| Soap Creek Watershed Site 68-80 | Iowa | Monroe | 41 | Low | Not Rated | 2009 | Flood Risk Reduction |
| Green Valley Lake Dam | Iowa | Union | 41 | Significant | Fair | 1953 | Recreation |
| Mud Creek Subwatershed Site 15-2 | Iowa | Plymouth | 41 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Ryan Henschal Watershed Site F-2 | Iowa | Pottawattamie | 41 | Low | Not Rated | 1964 | 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.