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 |
|---|---|---|---|---|---|---|---|
| Mill Picayune Watershed Site N-14-2 | Iowa | Shelby | 43 | Low | Not Rated | 1975 | Fire Protection, Stock, Or ... |
| Troublesome Cr Watershed Site 80-2 | Iowa | Audubon | 43 | Low | Not Rated | 1975 | Fire Protection, Stock, Or ... |
| Rodney Subwatershed Site 5-1 | Iowa | Monona | 43 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Dane Ridge Watershed Site B-4 | Iowa | Crawford | 43 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Dane Ridge Watershed Site C-6 | Iowa | Crawford | 43 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Coberly Dam | Iowa | Monona | 43 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site P-3 | Iowa | Shelby | 43 | Low | Not Rated | 1993 | Other |
| Upper Beaver Subwatershed Site M-2 | Iowa | Monona | 43 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Waubonsie Cr. Watershed Site 3 | Iowa | Mills | 43 | Significant | Satisfactory | 1994 | Fire Protection, Stock, Or ... |
| Lower Beaver Subwtrshd Sta 21+00 #2 | Iowa | Monona | 43 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Woodland Lake Dam | Iowa | Polk | 43 | Significant | Satisfactory | 1971 | |
| Twenty-Sixth Street Stormwater Detention Basin | Iowa | Polk | 43 | High | Satisfactory | 2007 | Flood Risk Reduction |
| Parnell Creek Subwatershed Site 15-1 | Iowa | Woodbury | 43 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Houston/Rogers Dam | Iowa | Crawford | 43 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Lazy Daz Dam | Iowa | Appanoose | 43 | Low | Not Rated | 1974 | Recreation |
| Big Park Watershed Site C-1 | Iowa | Crawford | 43 | Low | Not Rated | 1962 | Fire Protection, Stock, Or ... |
| Sells Dam | Iowa | Cherokee | 43 | Low | Not Rated | 2007 | 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 ... |
| Easter Lake Dam | Iowa | Polk | 43 | Significant | Satisfactory | 1967 | Recreation |
| Dane Ridge Watershed Site A-1 | Iowa | Crawford | 43 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Weiser Dam | Iowa | Clarke | 43 | Low | Not Rated | 2006 | Fire Protection, Stock, Or ... |
| Lake Ahquabi Dam | Iowa | Warren | 43 | Significant | Satisfactory | 1935 | Recreation |
| Beattie Dam | Iowa | Union | 43 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Mississippi River Lock and Dam 11 | Iowa | Dubuque | 43 | Significant | Not Available | 1937 | Navigation |
| Lake Fisher Dam | Iowa | Davis | 43 | Significant | Satisfactory | 1937 | Water Supply |
| Ralston Subwatershed Site 2-2 | Iowa | Cherokee | 43 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| 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 |
| Red Haw Dam | Iowa | Lucas | 43 | High | Fair | 1934 | Recreation |
| Nepper Subwatershed Site M-5700 | Iowa | Monona | 43 | Low | Not Rated | 1948 | Fire Protection, Stock, Or ... |
| Big Park Watershed Site D-1 | Iowa | Crawford | 43 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Cooper Cove Park Dam | Iowa | Pocahontas | 43 | Low | Not Rated | 1972 | Recreation |
| Held Watershed Site B-3 | Iowa | Plymouth | 43 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Maurer Dam | Iowa | O'Brien | 43 | Low | Not Rated | 2000 | Grade Stabilization |
| Ramsey Dam | Iowa | Harrison | 43 | Low | Not Rated | 2000 | Grade Stabilization |
| Hummel Dam | Iowa | Plymouth | 43 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Held Watershed Site B-2 | Iowa | Plymouth | 43 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Held Watershed Site E-3 | Iowa | Plymouth | 43 | High | Poor | 1978 | Flood Risk Reduction |
| Thye Dam | Iowa | Adair | 43 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Clarke Co. Roadgrade Dam 8-73-25 | Iowa | Clarke | 43 | Low | Not Rated | 1992 | Other |
| Pilot Rock Subwtrshd Sta 33+37 #1 | Iowa | Cherokee | 43 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Diamondhead Lake Dam | Iowa | Guthrie | 43 | Significant | Satisfactory | 1963 | Recreation |
| Jefferson Park Watershed Site 5 | Iowa | Wapello | 43 | High | Satisfactory | 1985 | Flood Risk Reduction |
| Mosquito of Harrison Watershed Site 5-2 | Iowa | Harrison | 43 | Low | Not Rated | 1988 | Fire Protection, Stock, Or ... |
| Pleasant Dam | Iowa | Clarke | 43 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| West Beaver Subwatershed Sta 40+06 #A | Iowa | Monona | 43 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Murguia Dam | Iowa | Des Moines | 43 | Significant | Satisfactory | 1978 | Recreation |
| Beaver Lake Dam | Iowa | Dallas | 43 | Significant | Satisfactory | 1990 | Recreation |
| Mississippi River Lock and Dam 10 | Iowa | Clayton | 43 | Significant | Not Available | 1937 | Navigation |
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.