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 |
|---|---|---|---|---|---|---|---|
| Gross Dam | Iowa | Adair | 31 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| General Manufacturing Dam | Iowa | Warren | 31 | Low | Not Rated | 1995 | Fire Protection, Stock, Or ... |
| Baker Dam | Iowa | Poweshiek | 31 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Knoxville Pond Dam | Iowa | Marion | 31 | Low | Not Rated | 1961 | Recreation |
| Sulsberger Dam | Iowa | Woodbury | 31 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Justice Dam | Iowa | Clarke | 31 | Low | Not Rated | 1995 | Fire Protection, Stock, Or ... |
| Weselmann Dam | Iowa | Winneshiek | 31 | Low | — | 2021 | Flood Risk Reduction |
| Young Dam | Iowa | Polk | 31 | Low | Not Rated | 2004 | Fire Protection, Stock, Or ... |
| Shipley Dam | Iowa | Montgomery | 31 | Low | — | 2023 | Grade Stabilization |
| Darbyshire Dam | Iowa | Henry | 31 | Low | Not Rated | 2009 | Grade Stabilization |
| Vershaw Dam | Iowa | Scott | 31 | Low | Fair | 2005 | Recreation |
| Schneller Dam | Iowa | Crawford | 30 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Shaw Dam | Iowa | Fremont | 30 | Low | Not Rated | 2003 | Fire Protection, Stock, Or ... |
| Whispering Pines Dam | Iowa | Audubon | 30 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Schultz/Blumer Dam | Iowa | Pottawattamie | 30 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Ory Dam | Iowa | Dallas | 30 | Low | Not Rated | 1998 | Fire Protection, Stock, Or ... |
| Shryock Dam | Iowa | Polk | 30 | Significant | Fair | 1963 | Fire Protection, Stock, Or ... |
| Miller Dam | Iowa | Crawford | 30 | Low | Not Rated | 1944 | Fire Protection, Stock, Or ... |
| Masters Dam | Iowa | Lucas | 30 | Low | Not Rated | 1984 | Fire Protection, Stock, Or ... |
| Badger Creek Watershed Site 33-1 | Iowa | Madison | 30 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Matthew Brown | Iowa | Union | 30 | Low | — | 2018 | Grade Stabilization |
| Gentleman Dam | Iowa | Appanoose | 30 | Low | Not Rated | 1987 | Fire Protection, Stock, Or ... |
| Green Castle Dam | Iowa | Marshall | 30 | Significant | Satisfactory | 1954 | Recreation |
| Muir Dam | Iowa | Greene | 30 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Dittmer Dam | Iowa | Warren | 30 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Monroe CO Roadgrade Site 7.5.4 | Iowa | Monroe | 30 | Low | Not Rated | 1985 | Other |
| West Fork One Subwatershed Site 1-5000 | Iowa | Woodbury | 30 | Low | Not Rated | 1955 | Fire Protection, Stock, Or ... |
| Lakewood Dredge Spoil Dam | Iowa | Warren | 30 | Low | Not Rated | 1990 | Other |
| Walters Dam | Iowa | Hardin | 30 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| Corning Reservoir Dam | Iowa | Adams | 30 | Significant | Satisfactory | 1917 | Water Supply |
| Van Dalen Dam | Iowa | Monroe | 30 | Low | Not Rated | 1996 | Fire Protection, Stock, Or ... |
| Greene County Roadgrade Dam 28-85-32 | Iowa | Greene | 30 | Low | Not Rated | 1986 | Other |
| Nyswonger Dam | Iowa | Warren | 30 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Triplett Dam | Iowa | Polk | 30 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Turkey Creek Watershed Site 58d | Iowa | Cass | 30 | Low | Not Rated | 2004 | Grade Stabilization |
| Ridgley Dam | Iowa | Crawford | 30 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Kinser Dam | Iowa | Montgomery | 30 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| Meggison Dam | Iowa | Dallas | 30 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Soap Creek Watershed Site 4-44 | Iowa | Appanoose | 30 | Low | Not Rated | 2003 | Flood Risk Reduction |
| Snook Dam | Iowa | Jasper | 30 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Ludwig Dam | Iowa | Warren | 30 | Low | Not Rated | 2002 | Recreation |
| Courcier Dam | Iowa | Montgomery | 30 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Turkey Cr Watershed Site 10-58 | Iowa | Cass | 30 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Wolf Creek Subwatershed Site M-2 | Iowa | Woodbury | 30 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Randolph Dam | Iowa | Van Buren | 30 | Low | Not Rated | 2000 | Fire Protection, Stock, Or ... |
| Earl Anderson Dam | Iowa | Dallas | 30 | Low | Satisfactory | 1996 | Fire Protection, Stock, Or ... |
| Simon Run Watershed Site 5-2 | Iowa | Pottawattamie | 30 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Bear Creek Watershed Site 51 | Iowa | Winneshiek | 30 | Low | Not Rated | 2005 | Flood Risk Reduction |
| Winkler Dam | Iowa | Wapello | 30 | Low | Not Rated | 1963 | Recreation |
| Troublesome Cr Watershed Site 42-1 | Iowa | Audubon | 30 | Low | Not Rated | 1979 | 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.