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 |
|---|---|---|---|---|---|---|---|
| Atwell Dam | Iowa | Lucas | 30 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| Soap Creek Watershed Site 4-86 | Iowa | Appanoose | 30 | Low | Not Rated | 2010 | Flood Risk Reduction |
| Thayer Lake Dam | Iowa | Union | 30 | Low | Not Rated | 1930 | Recreation |
| Snook Dam | Iowa | Jasper | 30 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Soap Creek Watershed Site 4-44 | Iowa | Appanoose | 30 | Low | Not Rated | 2003 | Flood Risk Reduction |
| Meggison Dam | Iowa | Dallas | 30 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Kinser Dam | Iowa | Montgomery | 30 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| Ridgley Dam | Iowa | Crawford | 30 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Turkey Creek Watershed Site 58d | Iowa | Cass | 30 | Low | Not Rated | 2004 | Grade Stabilization |
| Triplett Dam | Iowa | Polk | 30 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Nyswonger Dam | Iowa | Warren | 30 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Greene County Roadgrade Dam 28-85-32 | Iowa | Greene | 30 | Low | Not Rated | 1986 | Other |
| Van Dalen Dam | Iowa | Monroe | 30 | Low | Not Rated | 1996 | Fire Protection, Stock, Or ... |
| Corning Reservoir Dam | Iowa | Adams | 30 | Significant | Satisfactory | 1917 | Water Supply |
| Walters Dam | Iowa | Hardin | 30 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| Lakewood Dredge Spoil Dam | Iowa | Warren | 30 | Low | Not Rated | 1990 | Other |
| West Fork One Subwatershed Site 1-5000 | Iowa | Woodbury | 30 | Low | Not Rated | 1955 | Fire Protection, Stock, Or ... |
| Monroe CO Roadgrade Site 7.5.4 | Iowa | Monroe | 30 | Low | Not Rated | 1985 | Other |
| Dittmer Dam | Iowa | Warren | 30 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Muir Dam | Iowa | Greene | 30 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Green Castle Dam | Iowa | Marshall | 30 | Significant | Satisfactory | 1954 | Recreation |
| Gentleman Dam | Iowa | Appanoose | 30 | Low | Not Rated | 1987 | Fire Protection, Stock, Or ... |
| Matthew Brown | Iowa | Union | 30 | Low | — | 2018 | Grade Stabilization |
| Badger Creek Watershed Site 33-1 | Iowa | Madison | 30 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Masters Dam | Iowa | Lucas | 30 | Low | Not Rated | 1984 | Fire Protection, Stock, Or ... |
| Miller Dam | Iowa | Crawford | 30 | Low | Not Rated | 1944 | Fire Protection, Stock, Or ... |
| Shryock Dam | Iowa | Polk | 30 | Significant | Fair | 1963 | Fire Protection, Stock, Or ... |
| Ory Dam | Iowa | Dallas | 30 | Low | Not Rated | 1998 | Fire Protection, Stock, Or ... |
| Schultz/Blumer Dam | Iowa | Pottawattamie | 30 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Whispering Pines Dam | Iowa | Audubon | 30 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Shaw Dam | Iowa | Fremont | 30 | Low | Not Rated | 2003 | Fire Protection, Stock, Or ... |
| Arlington Subwatershed Sta 26+80 #12 | Iowa | Plymouth | 30 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Beener Dam | Iowa | Warren | 30 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Sheckler Dam | Iowa | Jefferson | 30 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Roeder Dam | Iowa | Tama | 30 | Low | Not Rated | 1996 | Fire Protection, Stock, Or ... |
| Arcola Subwatershed Site B-5350 | Iowa | Monona | 30 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Grote Dam | Iowa | Harrison | 30 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Hopkins Dam | Iowa | Davis | 30 | Low | Not Rated | 1962 | Fire Protection, Stock, Or ... |
| Andrew Dam | Iowa | Decatur | 30 | Low | Not Rated | 1983 | Fire Protection, Stock, Or ... |
| Peterson Dam | Iowa | Woodbury | 30 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Blockton Watershed Site E-1 | Iowa | Taylor | 30 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Pony Creek Watershed Site 7 | Iowa | Mills | 30 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Sharp Dam | Iowa | Crawford | 30 | Low | Not Rated | 1954 | Fire Protection, Stock, Or ... |
| Elliott Dam | Iowa | Story | 30 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Moulton Watershed Site B-2 | Iowa | Appanoose | 30 | Low | Not Rated | 1962 | Fire Protection, Stock, Or ... |
| Lawson Subwatershed Site 3-1 | Iowa | Monona | 30 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Moulton Watershed Site A-3 | Iowa | Appanoose | 30 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Moulton Watershed Site B-8 | Iowa | Appanoose | 30 | Low | Not Rated | 1962 | Fire Protection, Stock, Or ... |
| Hamaker Dam | Iowa | Crawford | 30 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Overmeyer Dam | Iowa | Adair | 30 | Low | Not Rated | 1959 | 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.