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 |
|---|---|---|---|---|---|---|---|
| Moulton Watershed Site B-2 | Iowa | Appanoose | 30 | Low | Not Rated | 1962 | Fire Protection, Stock, Or ... |
| Everling Dam | Iowa | Clarke | 30 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Wayne Co. Roadgrade Dam - Stokes Site | Iowa | Wayne | 30 | Low | Not Rated | 1996 | Other |
| Triplett Dam | Iowa | Polk | 30 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Courcier Dam | Iowa | Montgomery | 30 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Troublesome Cr Watershed Site 50-2 | Iowa | Audubon | 30 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Schneider Bros Dam | Iowa | Lucas | 30 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Whispering Pines Dam | Iowa | Audubon | 30 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Henningsgaard Dam | Iowa | Winneshiek | 30 | Low | Not Rated | 2002 | Fire Protection, Stock, Or ... |
| Molkenthin Dam | Iowa | Keokuk | 30 | Low | Not Rated | 1975 | Recreation |
| Malcom Dam | Iowa | Poweshiek | 30 | Low | Not Rated | 2006 | Fire Protection, Stock, Or ... |
| Hawley Dam | Iowa | Crawford | 30 | Low | Not Rated | 2009 | Flood Risk Reduction |
| Kirkholm Subwatershed A-3700 | Iowa | Ida | 30 | Low | Not Rated | 1949 | Fire Protection, Stock, Or ... |
| Schultz/Blumer Dam | Iowa | Pottawattamie | 30 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Soap Creek Watershed Site 68-71a | Iowa | Monroe | 30 | Low | Not Rated | 2010 | Flood Risk Reduction |
| Van Dalen Dam | Iowa | Monroe | 30 | Low | Not Rated | 1996 | Fire Protection, Stock, Or ... |
| Gant Creek Watershed Site D-6 | Iowa | Plymouth | 30 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Green Dam | Iowa | Polk | 30 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Soap Creek Watershed Site 4-87 | Iowa | Appanoose | 30 | Low | Not Rated | 1992 | Flood Risk Reduction |
| Clevenger Dam | Iowa | Warren | 30 | Low | Not Rated | 2000 | Fire Protection, Stock, Or ... |
| Andrew Dam | Iowa | Decatur | 30 | Low | Not Rated | 1983 | Fire Protection, Stock, Or ... |
| Triple B Dam 1 | Iowa | Jasper | 30 | Low | Not Rated | 1997 | Fish and Wildlife Pond |
| Van Den Broek Dam | Iowa | Marion | 30 | Low | Not Rated | 2004 | Fire Protection, Stock, Or ... |
| Garst Warehouse CO Dam | Iowa | Guthrie | 30 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Earl Anderson Dam | Iowa | Dallas | 30 | Low | Satisfactory | 1996 | Fire Protection, Stock, Or ... |
| Rodgers Park Lake Dam | Iowa | Benton | 30 | Significant | Fair | 1977 | Recreation |
| Davids Creek Watershed Site 14-2 | Iowa | Audubon | 30 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Ridgley Dam | Iowa | Crawford | 30 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Wenger Subwatershed M 130+73 | Iowa | Woodbury | 30 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Lake Lashane Dam | Iowa | Decatur | 30 | Significant | Satisfactory | 1954 | Water Supply |
| Soap Creek Watershed Site 90-112 | Iowa | Wapello | 30 | Low | Not Rated | 2003 | Flood Risk Reduction |
| Shryock Dam | Iowa | Polk | 30 | Significant | Fair | 1963 | Fire Protection, Stock, Or ... |
| Soap Creek Watershed Site 4-77 | Iowa | Appanoose | 30 | Low | Not Rated | 2007 | Flood Risk Reduction |
| Ammons Roadgrade Structure | Iowa | Monroe | 30 | Low | Not Rated | 2004 | Grade Stabilization |
| Twelve Mile Creek Watershed Site 62-4 | Iowa | Union | 30 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Reed Dam | Iowa | Washington | 30 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Ganzhorn Dam | Iowa | Harrison | 30 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Walters Creek Watershed Site D-23-2 | Iowa | Adams | 30 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Lakewood Dredge Spoil Dam | Iowa | Warren | 30 | Low | Not Rated | 1990 | Other |
| Buss Dam | Iowa | Harrison | 30 | Low | Not Rated | 2011 | Flood Risk Reduction |
| Turkey Cr Watershed Site 10-58 | Iowa | Cass | 30 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Turkey Creek Watershed Site 58d | Iowa | Cass | 30 | Low | Not Rated | 2004 | Grade Stabilization |
| Greene County Roadgrade Dam 28-85-32 | Iowa | Greene | 30 | Low | Not Rated | 1986 | Other |
| Hamaker Dam | Iowa | Crawford | 30 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Peterson Dam | Iowa | Monroe | 30 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Green Castle Dam | Iowa | Marshall | 30 | Significant | Satisfactory | 1954 | Recreation |
| Rolling Hills Estate Dam - Jones County | Iowa | Jones | 30 | Low | Not Rated | 2006 | Recreation |
| Troublesome Cr Watershed Site 81-6 | Iowa | Audubon | 30 | Low | Not Rated | 1984 | Fire Protection, Stock, Or ... |
| Thayer Lake Dam | Iowa | Union | 30 | Low | Not Rated | 1930 | Recreation |
| Croy Subwatershed Site A3-4908 | Iowa | Monona | 30 | Low | Not Rated | 1951 | 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.