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 |
|---|---|---|---|---|---|---|---|
| Mosquito of Harrison Watershed Site 5-3 | Iowa | Harrison | 40 | Low | Not Rated | 1988 | Fire Protection, Stock, Or ... |
| Paulson Dam | Iowa | Mills | 40 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-27-1 | Iowa | Crawford | 40 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Diamond Lake Dam (Poweshiek Co) | Iowa | Poweshiek | 40 | Significant | Satisfactory | 1952 | Water Supply |
| Lake Iowa Dam | Iowa | Iowa | 40 | Significant | Fair | 1962 | Recreation |
| Mosquito of Harrison Watershed Site 7-4 | Iowa | Harrison | 40 | Low | Not Rated | 1993 | Fire Protection, Stock, Or ... |
| Bacon Creek Watershed Site H-1-3 | Iowa | Woodbury | 40 | Significant | Satisfactory | 1981 | Fire Protection, Stock, Or ... |
| Soap Creek Watershed Site 26-55 | Iowa | Davis | 40 | Low | Not Rated | 2007 | Grade Stabilization |
| Gant Creek Watershed Site C-3 | Iowa | Plymouth | 40 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Westside Subwatershed Site 2-1 | Iowa | Ida | 40 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Gant Creek Watershed Site A-2 | Iowa | Plymouth | 40 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Iowa Noname48 | Iowa | Shelby | 40 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Wolf Creek Subwatershed Site 5a-1 | Iowa | Woodbury | 40 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-24-2 | Iowa | Crawford | 40 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Springbrook Lake Dam | Iowa | Guthrie | 40 | Significant | Satisfactory | 1934 | Recreation |
| East Aldrich Subwatershed B-4780 | Iowa | Ida | 40 | Low | Not Rated | 1954 | Fire Protection, Stock, Or ... |
| West Wolf Creek Subwatershed Site 13 | Iowa | Woodbury | 40 | Low | Not Rated | 1990 | Fire Protection, Stock, Or ... |
| Crawford Creek Subwatershed Site 13f-1 | Iowa | Ida | 40 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Little Beaver Subwatershed M-16730 | Iowa | Woodbury | 40 | Low | Not Rated | 1957 | Fire Protection, Stock, Or ... |
| Heisler Creek Subwtrshd Sta 29+80 #3d | Iowa | Woodbury | 40 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Coberly/Swenson Dam | Iowa | Monona | 40 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Waubonsie Cr. Watershed Site 39 | Iowa | Mills | 40 | Low | Not Rated | 1983 | Fire Protection, Stock, Or ... |
| Waterford Pond Dam | Iowa | Polk | 40 | Low | Fair | 1966 | Fire Protection, Stock, Or ... |
| Dutch Hollow Subwatershed Site 1-2 | Iowa | Woodbury | 40 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Iowa Select Farms Dam | Iowa | Union | 40 | Low | Not Rated | 1997 | Water Supply |
| Robeson Subwatershed Site 4400 | Iowa | Cherokee | 40 | Low | Not Rated | 1955 | Fire Protection, Stock, Or ... |
| Heisler Subwatershed Site 2-1 | Iowa | Woodbury | 40 | Low | Not Rated | 2004 | Flood Risk Reduction |
| College Corner Subwatershed Site 4-5 | Iowa | Woodbury | 40 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site P-39-2 | Iowa | Shelby | 40 | Low | Not Rated | 1986 | Fire Protection, Stock, Or ... |
| Leech Hollow Subwatershed Site C-6 | Iowa | Monona | 40 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Pierce Creek No 1 Watershed Site 5 | Iowa | Page | 40 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-24-14 | Iowa | Shelby | 40 | Significant | Satisfactory | 1961 | Fire Protection, Stock, Or ... |
| White Dam | Iowa | Des Moines | 40 | Low | Not Rated | 1988 | Fire Protection, Stock, Or ... |
| Heishman Dam | Iowa | Poweshiek | 40 | Low | Not Rated | 2017 | Recreation |
| Dakins Lake Dam | Iowa | Story | 40 | Significant | Fair | 2014 | Recreation |
| Mill Picayune Watershed Site M-24-17 | Iowa | Shelby | 40 | Significant | Satisfactory | 1984 | Fire Protection, Stock, Or ... |
| Bacon Creek Watershed Site H-1-2 | Iowa | Woodbury | 40 | Significant | Not Rated | 1981 | Flood Risk Reduction |
| Sun Valley Lake Sediment Basin | Iowa | Ringgold | 40 | Significant | — | 2019 | Other |
| Beach Dam | Iowa | Henry | 40 | Low | Not Rated | 1975 | Recreation |
| Fairfield Water Works Dam No 1 | Iowa | Jefferson | 40 | Significant | Satisfactory | 1888 | Water Supply |
| Mucky Creek Subwatershed Sta 57+00 | Iowa | Monona | 40 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Davis-Battle Cr. Watershed Site G-1 | Iowa | Monona | 40 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Iowa Noname43 | Iowa | Pottawattamie | 40 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Mc Fadden Dam | Iowa | Clarke | 40 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Hunter Dam | Iowa | Jasper | 40 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Huff Subwatershed 3-6069 | Iowa | Monona | 40 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Fridley Dam | Iowa | Warren | 40 | Low | Not Rated | 1977 | Recreation |
| Van Sickle Dam | Iowa | Boone | 40 | Low | Not Rated | 1995 | Fire Protection, Stock, Or ... |
| Pony Creek Watershed Site 24 | Iowa | Mills | 40 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Conley Dam | Iowa | Cherokee | 40 | Low | Not Rated | 1997 | 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.