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 |
|---|---|---|---|---|---|---|---|
| Spencer Dam | Iowa | Harrison | 47 | Low | Not Rated | 2007 | Fire Protection, Stock, Or ... |
| Blume/Haley Dam | Iowa | Plymouth | 47 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Arrowhead Lake Dam | Iowa | Pottawattamie | 47 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Davis-Battle Cr. Watershed Site H-4-2 | Iowa | Monona | 47 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Heritage Point Lake Dam | Iowa | Wayne | 47 | Significant | Satisfactory | 1971 | Fire Protection, Stock, Or ... |
| Waubonsie Cr. Watershed Site 9-1 | Iowa | Mills | 47 | Low | Not Rated | 1976 | Other |
| Lum Hollow Subwatershed 9-3544 | Iowa | Woodbury | 47 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Waubonsie Cr. Watershed Site 36-3 | Iowa | Mills | 47 | Low | Not Rated | 1983 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site P-47-4 | Iowa | Shelby | 47 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Iowa Noname57 | Iowa | Washington | 47 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Iowa Noname22 | Iowa | Iowa | 47 | Low | Not Rated | 1972 | Recreation |
| Windy Hill Subwatershed Site 5b-1 | Iowa | Woodbury | 47 | Low | Not Rated | 1975 | Fire Protection, Stock, Or ... |
| Covered Bridge Estates Dam | Iowa | Madison | 47 | High | Satisfactory | 2005 | Flood Risk Reduction |
| Neustrom Subwatershed Site 13-1 | Iowa | Woodbury | 47 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Lake Darling Dam | Iowa | Washington | 47 | Significant | Satisfactory | 1950 | Recreation |
| Waubonsie Cr. Watershed Site 3-7 | Iowa | Mills | 47 | Significant | Satisfactory | 1989 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-29-2 | Iowa | Crawford | 47 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Mississippi River Lock and Dam 17 | Iowa | Mercer | 47 | Significant | Not Available | 1939 | Navigation |
| Sunrise Subwatershed Site 6-1 | Iowa | Woodbury | 47 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Davis Subwatershed M-3398 | Iowa | Woodbury | 47 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Gant Creek Watershed Site D-5 | Iowa | Plymouth | 47 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Emerald Valley Dam | Iowa | Clayton | 47 | Significant | Satisfactory | 2008 | Recreation |
| Lacey-Keosaqua Park Lake Dam | Iowa | Van Buren | 47 | Low | Satisfactory | 1930 | Recreation |
| Mill Picayune Watershed Site M-14-1 | Iowa | Shelby | 47 | Low | Not Rated | 1975 | Fire Protection, Stock, Or ... |
| Draper Dam | Iowa | Fremont | 46 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Bacon Creek Watershed Site J-1 | Iowa | Woodbury | 46 | Significant | Satisfactory | 1984 | Flood Risk Reduction |
| Harmony Creek Watershed Site 4 | Iowa | Harrison | 46 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Heisler Creek Subwtrshd Sta 39+84 #3 | Iowa | Woodbury | 46 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Camp Creek Subwatershed Site M-2a | Iowa | Woodbury | 46 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Lake Ohana Dam #1 | Iowa | Mills | 46 | Significant | Poor | 2007 | |
| Mill Picayune Watershed Site M-8 | Iowa | Shelby | 46 | Significant | Fair | 1963 | Fire Protection, Stock, Or ... |
| Bacon Creek Watershed Site L-3 | Iowa | Woodbury | 46 | Low | Not Rated | 1976 | Flood Risk Reduction |
| Iowa Noname34 | Iowa | O'Brien | 46 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Wingert/Freymann Dam | Iowa | Plymouth | 46 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Leutzinger-Lowe Watershed Site M-1 | Iowa | Muscatine | 46 | Significant | Satisfactory | 1971 | Flood Risk Reduction |
| Lake Meyer Dam | Iowa | Winneshiek | 46 | Significant | Fair | 1966 | Recreation |
| Mosquito Creek Watershed Site 6-1 | Iowa | Harrison | 46 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Dane Ridge Watershed Site C-5 | Iowa | Crawford | 46 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Croy Subwatershed Site 2530 | Iowa | Monona | 46 | Low | Not Rated | 1951 | Fire Protection, Stock, Or ... |
| Little Sioux Scout Ranch Dam | Iowa | Monona | 46 | Low | Not Rated | 1974 | Recreation |
| Davis-Battle Cr. Watershed Site D-3 | Iowa | Monona | 46 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Badger Creek Watershed Site M-1-A | Iowa | Madison | 46 | Significant | Satisfactory | 1980 | Recreation |
| Little Egypt Subwatershed 9-2670 | Iowa | Woodbury | 46 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Semke Dam | Iowa | Greene | 46 | Low | Not Rated | 1998 | Fire Protection, Stock, Or ... |
| Walters Creek Watershed Site 18-2 | Iowa | Adams | 46 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Walters Creek Watershed Site D-15-2 | Iowa | Adams | 46 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Schroder Dam | Iowa | Henry | 46 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Brown Deer Golf Course Dam | Iowa | Johnson | 46 | Significant | Satisfactory | 1970 | Recreation |
| Harris Dam | Iowa | Guthrie | 46 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site P-79-1 | Iowa | Shelby | 46 | 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.