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 |
|---|---|---|---|---|---|---|---|
| Arnold-Armstrong Subwtrshd Sta 127+05 | Iowa | Monona | 36 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Twin Ponies Watershed Site 8 | Iowa | Pottawattamie | 36 | Low | Not Rated | 1990 | Fire Protection, Stock, Or ... |
| Bacon Creek Watershed Site A-1-1 | Iowa | Woodbury | 36 | High | Fair | 1978 | Flood Risk Reduction |
| Swaim Dam | Iowa | Davis | 36 | Low | Not Rated | 2016 | Flood Risk Reduction |
| Wayne Co. Roadgrade Dam 10-69-21 | Iowa | Wayne | 36 | Low | Not Rated | 1987 | Other |
| Lindberg/Johnson Dam | Iowa | Sac | 36 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Patz Dam | Iowa | Webster | 36 | Low | Not Rated | 1978 | Recreation |
| Kness Dam | Iowa | Monroe | 36 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Little Beaver Subwatershed 5b-5000 | Iowa | Woodbury | 36 | Low | Not Rated | 1957 | Fire Protection, Stock, Or ... |
| Seven Cedars Farms Dam | Iowa | Crawford | 36 | Low | Not Rated | 2001 | Fire Protection, Stock, Or ... |
| Soap Creek Watershed Site 68-56 | Iowa | Monroe | 36 | Low | Not Rated | 2003 | Flood Risk Reduction |
| Quad Valley Subwatershed Site 1d-1 | Iowa | Ida | 36 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Dane Ridge Watershed Site B-1 | Iowa | Crawford | 36 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Turkey Cr Watershed Site 49-A | Iowa | Cass | 36 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Shaha Dam | Iowa | Ringgold | 36 | Low | Not Rated | 2003 | Fire Protection, Stock, Or ... |
| Spring Valley Project No. 2 | Iowa | Monona | 36 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Petchulat Dam | Iowa | Johnson | 36 | Low | Not Rated | 1993 | Fire Protection, Stock, Or ... |
| Jefferson Park Watershed Site 1 | Iowa | Wapello | 36 | High | Satisfactory | 1976 | Flood Risk Reduction |
| Mitchell/ Lyon Dam | Iowa | Guthrie | 36 | Low | Not Rated | 1974 | Recreation |
| Cord Subwatershed M-5571 | Iowa | Woodbury | 36 | Low | Not Rated | 1957 | Fire Protection, Stock, Or ... |
| Schlies Dam | Iowa | Monona | 36 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| Pierce Creek No 1 Watershed Site 12 | Iowa | Page | 36 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Jefferson Park Watershed Site 4 | Iowa | Wapello | 36 | High | Satisfactory | 1978 | Flood Risk Reduction |
| Stone Dam | Iowa | Louisa | 36 | Low | Not Rated | 1988 | Fire Protection, Stock, Or ... |
| Freestone Dam | Iowa | Dallas | 36 | Low | Not Rated | 2000 | Fire Protection, Stock, Or ... |
| Jacobson Dam | Iowa | Crawford | 36 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Iowa Noname67 | Iowa | Crawford | 36 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Washington CO Road Dam 3-74-7 | Iowa | Washington | 36 | Low | Not Rated | 2002 | Grade Stabilization |
| Little Beaver Subwatershed 5-8154 | Iowa | Woodbury | 36 | Low | Not Rated | 1957 | Fire Protection, Stock, Or ... |
| Upper Beaver Subwatershed Site 51-1 | Iowa | Monona | 36 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Hopp Dam (Upper Site) | Iowa | Mills | 36 | Low | Not Rated | 2005 | Grade Stabilization |
| Big Park Watershed Site C-2 | Iowa | Crawford | 36 | Low | Not Rated | 1962 | Fire Protection, Stock, Or ... |
| Chipp Dam | Iowa | Lucas | 36 | Low | Not Rated | 1996 | Fire Protection, Stock, Or ... |
| Twelve Mile Creek Watershed Site 62-5 | Iowa | Union | 36 | Low | Not Rated | 2003 | Grade Stabilization |
| Holm Dam | Iowa | Madison | 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 ... |
| Indian Creek-Van Buren Watershed Site 27 | Iowa | Van Buren | 36 | Significant | Satisfactory | 1990 | Flood Risk Reduction |
| Simpson Creek Watershed Site 5 | Iowa | Fremont | 36 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Arnold-Armstrong Subwtrshd Sta 171+55 | Iowa | Monona | 36 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Davis Subwatershed 7-1580 | Iowa | Woodbury | 36 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Stanzel Christian High School Dam | Iowa | Adair | 36 | Low | Not Rated | 1970 | Recreation |
| Goos/Brandt Dam | Iowa | Pottawattamie | 36 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Conley Dam 2 | Iowa | Cherokee | 36 | Low | Not Rated | 2002 | Fire Protection, Stock, Or ... |
| Mosquito Creek Watershed Site 13-1 | Iowa | Harrison | 36 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Glen Oaks Country Club Dam | Iowa | Polk | 36 | High | Satisfactory | 1950 | Recreation |
| Wenger Subwatershed Sta 43+88 #M | Iowa | Woodbury | 36 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Montgomery Dam | Iowa | Cherokee | 36 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Twelve Mile Creek Watershed Site D-41-A-5 | Iowa | Union | 36 | Low | Not Rated | 2006 | Flood Risk Reduction |
| Rath Dam | Iowa | Crawford | 36 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Davis Subwatershed M-10843 | Iowa | Woodbury | 36 | Low | Not Rated | 1958 | 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.