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 |
|---|---|---|---|---|---|---|---|
| Gregory, INC. Dam | Iowa | Lee | 36 | Low | Not Rated | 1996 | Fire Protection, Stock, Or ... |
| Kness Dam | Iowa | Monroe | 36 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Twin Ponies Watershed Site 8 | Iowa | Pottawattamie | 36 | Low | Not Rated | 1990 | Fire Protection, Stock, Or ... |
| Badger Creek Watershed Site 14-1 | Iowa | Madison | 36 | Significant | Fair | 1984 | Fire Protection, Stock, Or ... |
| Twelve Mile Creek Watershed Site 18 | Iowa | Union | 36 | Low | Not Rated | 1986 | Fire Protection, Stock, Or ... |
| Cozad Dam | Iowa | Clarke | 36 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Legacy Farms Dam | Iowa | Montgomery | 36 | Low | — | 2023 | Grade Stabilization |
| Pierce Creek No 1 Watershed Site 12 | Iowa | Page | 36 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Stanzel Christian High School Dam | Iowa | Adair | 36 | Low | Not Rated | 1970 | Recreation |
| Patz Dam | Iowa | Webster | 36 | Low | Not Rated | 1978 | Recreation |
| Elkhorn No.2 Subwatershed 1-3112 | Iowa | Plymouth | 36 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Jett Subwatershed Site 16-1 | Iowa | Woodbury | 36 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Simpson Creek Watershed Site 5 | Iowa | Fremont | 36 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Quad Valley Subwatershed Site 1d-1 | Iowa | Ida | 36 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Davis Subwatershed M-7920 | Iowa | Woodbury | 36 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Cynthia Schlapia Dam | Iowa | Ringgold | 36 | Low | Not Rated | 2016 | Grade Stabilization |
| Reed Subwatershed Sta 37+70 #2 | Iowa | Monona | 36 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Holm Dam | Iowa | Madison | 36 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Petchulat Dam | Iowa | Johnson | 36 | Low | Not Rated | 1993 | Fire Protection, Stock, Or ... |
| Arnold-Armstrong Subwtrshd Sta 127+05 | Iowa | Monona | 36 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Gant Creek Watershed Site D-3 | Iowa | Plymouth | 36 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Merritt/Roden Dam | Iowa | Carroll | 36 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Mitchell/ Lyon Dam | Iowa | Guthrie | 36 | Low | Not Rated | 1974 | Recreation |
| Montgomery Dam | Iowa | Cherokee | 36 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Goos/Brandt Dam | Iowa | Pottawattamie | 36 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Wayne Co. Roadgrade Dam 10-69-21 | Iowa | Wayne | 36 | Low | Not Rated | 1987 | Other |
| Arcola Subwatershed Sta 44+80 | Iowa | Monona | 36 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Arnold Lake Dam | Iowa | Story | 36 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Shaha Dam | Iowa | Ringgold | 36 | Low | Not Rated | 2003 | Fire Protection, Stock, Or ... |
| Iowa Noname67 | Iowa | Crawford | 36 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Ken Southworth Jr. Dam | Iowa | Dubuque | 36 | Low | Not Rated | 2014 | Grade Stabilization |
| Lindberg/Johnson Dam | Iowa | Sac | 36 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Stennett-Red Oak Watershed Site 7 | Iowa | Montgomery | 36 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Bacon Creek Watershed Site A-1-1 | Iowa | Woodbury | 36 | High | Fair | 1978 | Flood Risk Reduction |
| Chipp Dam | Iowa | Lucas | 36 | Low | Not Rated | 1996 | Fire Protection, Stock, Or ... |
| Mosquito Creek Watershed Site 13-1 | Iowa | Harrison | 36 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Lake Homestead Dam | Iowa | Jackson | 36 | Significant | Satisfactory | 1978 | Recreation |
| Twelve Mile Creek Watershed Site D-44-1 | Iowa | Union | 36 | Low | Not Rated | 2008 | Flood Risk Reduction |
| Iowa Noname3 | Iowa | Appanoose | 36 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Elkhorn No.2 Subwatershed Site 1-3 | Iowa | Plymouth | 36 | Low | Not Rated | 1984 | Fire Protection, Stock, Or ... |
| Jacobson Dam | Iowa | Crawford | 36 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Big Park Watershed Site C-2 | Iowa | Crawford | 36 | Low | Not Rated | 1962 | Fire Protection, Stock, Or ... |
| Beane Dam | Iowa | Tama | 36 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Turkey Cr Watershed Site 59d-2 | Iowa | Cass | 36 | Significant | Fair | 1980 | Flood Risk Reduction |
| Glen Oaks Country Club Dam | Iowa | Polk | 36 | High | Satisfactory | 1950 | Recreation |
| Arnold-Armstrong Subwtrshd Gully 23 | Iowa | Monona | 36 | Significant | Fair | 1961 | Fire Protection, Stock, Or ... |
| Windy Hill Subwatershed Site 5-1 | Iowa | Woodbury | 36 | Low | Not Rated | 1975 | Fire Protection, Stock, Or ... |
| Freestone Dam | Iowa | Dallas | 36 | Low | Not Rated | 2000 | Fire Protection, Stock, Or ... |
| Dane Ridge Watershed Site B-1 | Iowa | Crawford | 36 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Engnell Dam | Iowa | Boone | 36 | Low | Not Rated | 1970 | 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.