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 |
|---|---|---|---|---|---|---|---|
| Marion County Roadgrade Dam 25-76-19 | Iowa | Marion | 47 | Low | Not Rated | 1964 | Other |
| Waubonsie Cr. Watershed Site 36-3 | Iowa | Mills | 47 | Low | Not Rated | 1983 | Fire Protection, Stock, Or ... |
| Spencer Dam | Iowa | Harrison | 47 | Low | Not Rated | 2007 | Fire Protection, Stock, Or ... |
| Covered Bridge Estates Dam | Iowa | Madison | 47 | High | Satisfactory | 2005 | Flood Risk Reduction |
| Big Coon Subwatershed Site 2-10a | Iowa | Woodbury | 47 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| Emerald Valley Dam | Iowa | Clayton | 47 | Significant | Satisfactory | 2008 | Recreation |
| Waubonsie Cr. Watershed Site 3-1-2 | Iowa | Fremont | 47 | Low | Not Rated | 1984 | Fire Protection, Stock, Or ... |
| Lacey-Keosaqua Park Lake Dam | Iowa | Van Buren | 47 | Low | Satisfactory | 1930 | Recreation |
| Mississippi River Lock and Dam 17 | Iowa | Mercer | 47 | Significant | Not Available | 1939 | Navigation |
| Swine Graphics Dam #2 | Iowa | Clarke | 47 | Low | Not Rated | 2005 | Water Supply |
| Arrowhead Lake Dam | Iowa | Pottawattamie | 47 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Bacon Creek Watershed Site A-2-3 | Iowa | Woodbury | 47 | Significant | Poor | 1978 | Flood Risk Reduction |
| Mill Picayune Watershed Site P-47-4 | Iowa | Shelby | 47 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-14-1 | Iowa | Shelby | 47 | Low | Not Rated | 1975 | Fire Protection, Stock, Or ... |
| Heritage Point Lake Dam | Iowa | Wayne | 47 | Significant | Satisfactory | 1971 | Fire Protection, Stock, Or ... |
| Burlington Y-Camp Dam | Iowa | Des Moines | 47 | Low | Satisfactory | 1966 | Recreation |
| English Bench Watershed Site 5 | Iowa | Allamakee | 47 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Iowa Noname22 | Iowa | Iowa | 47 | Low | Not Rated | 1972 | Recreation |
| Sunrise Subwatershed Site 6-1 | Iowa | Woodbury | 47 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Blume/Haley Dam | Iowa | Plymouth | 47 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Neustrom Subwatershed Site 13-1 | Iowa | Woodbury | 47 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Davis-Battle Cr. Watershed Site H-4-2 | Iowa | Monona | 47 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Mc Call Subwatershed Site M-2 | Iowa | Monona | 47 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Lum Hollow Subwatershed 9-3544 | Iowa | Woodbury | 47 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Lake Meyer Dam | Iowa | Winneshiek | 46 | Significant | Fair | 1966 | Recreation |
| Wingert/Freymann Dam | Iowa | Plymouth | 46 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Harmony Creek Watershed Site 4 | Iowa | Harrison | 46 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Mosquito Creek Watershed Site 6-1 | Iowa | Harrison | 46 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Brown Deer Golf Course Dam | Iowa | Johnson | 46 | Significant | Satisfactory | 1970 | Recreation |
| Leutzinger-Lowe Watershed Site M-1 | Iowa | Muscatine | 46 | Significant | Satisfactory | 1971 | Flood Risk Reduction |
| Little Sioux Scout Ranch Dam | Iowa | Monona | 46 | Low | Not Rated | 1974 | Recreation |
| Harris Dam | Iowa | Guthrie | 46 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Pony Creek Watershed Site 34 | Iowa | Mills | 46 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Waubonsie Cr. Watershed Site 3-1 | Iowa | Fremont | 46 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Walters Creek Watershed Site 18-2 | Iowa | Adams | 46 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Badger Creek Watershed Site M-1-A | Iowa | Madison | 46 | Significant | Satisfactory | 1980 | Recreation |
| Bacon Creek Watershed Site J-1 | Iowa | Woodbury | 46 | Significant | Satisfactory | 1984 | Flood Risk Reduction |
| Davis-Battle Cr. Watershed Site D-3 | Iowa | Monona | 46 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Dane Ridge Watershed Site C-5 | Iowa | Crawford | 46 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Camp Creek Subwatershed Site M-2a | Iowa | Woodbury | 46 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Semke Dam | Iowa | Greene | 46 | Low | Not Rated | 1998 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-8 | Iowa | Shelby | 46 | Significant | Fair | 1963 | Fire Protection, Stock, Or ... |
| Draper Dam | Iowa | Fremont | 46 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Bacon Creek Watershed Site H-3-2 | Iowa | Woodbury | 46 | Significant | Satisfactory | 1984 | Flood Risk Reduction |
| Bacon Creek Watershed Site L-3 | Iowa | Woodbury | 46 | Low | Not Rated | 1976 | Flood Risk Reduction |
| Heisler Creek Subwtrshd Sta 39+84 #3 | Iowa | Woodbury | 46 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Croy Subwatershed Site 2530 | Iowa | Monona | 46 | Low | Not Rated | 1951 | Fire Protection, Stock, Or ... |
| Good Dam | Iowa | Fremont | 46 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Mule Creek Watershed Sta 60+00 | Iowa | Mills | 46 | Low | Not Rated | 1955 | Fire Protection, Stock, Or ... |
| Schroder Dam | Iowa | Henry | 46 | Low | Not Rated | 1968 | 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.