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 |
|---|---|---|---|---|---|---|---|
| Troublesome Cr Watershed Site 80-2 | Iowa | Audubon | 43 | Low | Not Rated | 1975 | Fire Protection, Stock, Or ... |
| Easter Lake Dam | Iowa | Polk | 43 | Significant | Satisfactory | 1967 | Recreation |
| Lake Fisher Dam | Iowa | Davis | 43 | Significant | Satisfactory | 1937 | Water Supply |
| Davis-Battle Cr. Watershed Site D-1 | Iowa | Monona | 43 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Murguia Dam | Iowa | Des Moines | 43 | Significant | Satisfactory | 1978 | Recreation |
| Cooper Cove Park Dam | Iowa | Pocahontas | 43 | Low | Not Rated | 1972 | Recreation |
| Rodney Subwatershed Site 5-1 | Iowa | Monona | 43 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Lazy Daz Dam | Iowa | Appanoose | 43 | Low | Not Rated | 1974 | Recreation |
| Held Watershed Site E-3 | Iowa | Plymouth | 43 | High | Poor | 1978 | Flood Risk Reduction |
| Lum Hollow Subwatershed 6-5495 | Iowa | Woodbury | 43 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Siegel Flood Control Dam | Iowa | Clayton | 43 | High | Satisfactory | 1938 | Flood Risk Reduction |
| Mill Picayune Watershed Site N-14-2 | Iowa | Shelby | 43 | Low | Not Rated | 1975 | Fire Protection, Stock, Or ... |
| Coberly Dam | Iowa | Monona | 43 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Ralston Subwatershed Site 2-2 | Iowa | Cherokee | 43 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Clarke Co. Roadgrade Dam 8-73-25 | Iowa | Clarke | 43 | Low | Not Rated | 1992 | Other |
| Parnell Creek Subwatershed Site 15-1 | Iowa | Woodbury | 43 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Dog Creek Dam | Iowa | O'Brien | 43 | Significant | Fair | 1967 | Other |
| Jett Subwatershed Site M-5 | Iowa | Woodbury | 43 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Dane Ridge Watershed Site A-1 | Iowa | Crawford | 43 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Held Watershed Site B-2 | Iowa | Plymouth | 43 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Thye Dam | Iowa | Adair | 43 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Dane Ridge Watershed Site B-4 | Iowa | Crawford | 43 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Sells Dam | Iowa | Cherokee | 43 | Low | Not Rated | 2007 | Fire Protection, Stock, Or ... |
| Diamondhead Lake Dam | Iowa | Guthrie | 43 | Significant | Satisfactory | 1963 | Recreation |
| Upper Beaver Subwatershed Site M-2 | Iowa | Monona | 43 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Harmony Creek Watershed Site 1 | Iowa | Harrison | 43 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Waubonsie Cr. Watershed Site 3 | Iowa | Mills | 43 | Significant | Satisfactory | 1994 | Fire Protection, Stock, Or ... |
| Pottawattamie CO Roadgrade Dam 8-76-42 | Iowa | Pottawattamie | 43 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Hummel Dam | Iowa | Plymouth | 43 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Big Park Watershed Site C-1 | Iowa | Crawford | 43 | Low | Not Rated | 1962 | Fire Protection, Stock, Or ... |
| Houston/Rogers Dam | Iowa | Crawford | 43 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Nepper Subwatershed Site M-5700 | Iowa | Monona | 43 | Low | Not Rated | 1948 | Fire Protection, Stock, Or ... |
| Twenty-Sixth Street Stormwater Detention Basin | Iowa | Polk | 43 | High | Satisfactory | 2007 | Flood Risk Reduction |
| Beaver Lake Dam | Iowa | Dallas | 43 | Significant | Satisfactory | 1990 | Recreation |
| Weiser Dam | Iowa | Clarke | 43 | Low | Not Rated | 2006 | Fire Protection, Stock, Or ... |
| Stennett-Red Oak Watershed Site 19 | Iowa | Montgomery | 43 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Mississippi River Lock and Dam 10 | Iowa | Clayton | 43 | Significant | Not Available | 1937 | Navigation |
| Ramsey Dam | Iowa | Harrison | 43 | Low | Not Rated | 2000 | Grade Stabilization |
| Beattie Dam | Iowa | Union | 43 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| West Beaver Subwatershed Sta 40+06 #A | Iowa | Monona | 43 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Lower Beaver Subwtrshd Sta 21+00 #2 | Iowa | Monona | 43 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Big Park Watershed Site D-1 | Iowa | Crawford | 43 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Jefferson Park Watershed Site 5 | Iowa | Wapello | 43 | High | Satisfactory | 1985 | Flood Risk Reduction |
| Johnston Dam | Iowa | Dallas | 43 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Jackson Dam | Iowa | Wayne | 43 | Low | Not Rated | 1994 | Other |
| Mill Picayune Watershed Site P-3 | Iowa | Shelby | 43 | Low | Not Rated | 1993 | Other |
| Held Watershed Site B-3 | Iowa | Plymouth | 43 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Pleasant Dam | Iowa | Clarke | 43 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Mississippi River Lock and Dam 11 | Iowa | Dubuque | 43 | Significant | Not Available | 1937 | Navigation |
| Maurer Dam | Iowa | O'Brien | 43 | Low | Not Rated | 2000 | Grade Stabilization |
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.