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 |
|---|---|---|---|---|---|---|---|
| Wolf Creek Subwatershed Site 5-2 | Iowa | Woodbury | 31 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Mike Mikkelson Subwatershed 9-2555 | Iowa | Monona | 31 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Three Mile Creek Watershed Site 45-2 | Iowa | Union | 31 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Lum Hollow Subwatershed 9-7697 | Iowa | Woodbury | 31 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Three Mile Creek Watershed Site 14-G | Iowa | Union | 31 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Lankelma Dam | Iowa | Marion | 31 | Low | Not Rated | 1990 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-24-15 | Iowa | Shelby | 31 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Voltmer Dam | Iowa | Warren | 31 | Low | Not Rated | 1990 | Fire Protection, Stock, Or ... |
| Mosquito of Harrison B | Iowa | Harrison | 31 | Low | Not Rated | 1987 | Fire Protection, Stock, Or ... |
| Diehl Dam | Iowa | Ringgold | 31 | Low | Not Rated | 1991 | Fire Protection, Stock, Or ... |
| Parnell Creek Subwatershed Site 21-2 | Iowa | Woodbury | 31 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Three Mile Creek Watershed Site 45-1 | Iowa | Union | 31 | Low | Not Rated | 1970 | Other |
| Arlington Subwtrshd Sta 27+02 #8 | Iowa | Woodbury | 31 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Trausch Dam | Iowa | Madison | 31 | Low | Not Rated | 2002 | Recreation |
| Kellin Dam | Iowa | Decatur | 31 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Huffman Dam | Iowa | Keokuk | 31 | Low | Not Rated | 1993 | Fire Protection, Stock, Or ... |
| Merrill Dorland Dam | Iowa | Clarke | 31 | Low | Not Rated | 2014 | Grade Stabilization |
| Willow Lake Dam | Iowa | Harrison | 31 | Low | Not Rated | 1976 | Debris Control |
| Cramer Farms Dam | Iowa | Union | 31 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Mystic Reservoir Dam | Iowa | Appanoose | 31 | Low | Satisfactory | 1930 | Fire Protection, Stock, Or ... |
| Sevcik Dam | Iowa | Tama | 31 | Low | Not Rated | 1995 | Fire Protection, Stock, Or ... |
| Deal Dam | Iowa | Kossuth | 31 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Anderzhon Dam | Iowa | Fremont | 31 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Copper Creek Lake Dam | Iowa | Polk | 31 | Significant | Satisfactory | 1995 | Irrigation |
| William Ory Dam | Iowa | Madison | 31 | Low | — | 2018 | Grade Stabilization |
| Twelve Mile Creek Watershed Site 27 | Iowa | Union | 31 | Low | Not Rated | 1986 | Fire Protection, Stock, Or ... |
| Smith Dam | Iowa | Guthrie | 31 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Crawford Creek Subwatershed Site 13g-1 | Iowa | Tama | 31 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Gosch Dam | Iowa | Monona | 31 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Axtell Dam | Iowa | Jasper | 31 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Trotter Dam | Iowa | Jasper | 31 | Low | Not Rated | 1971 | Recreation |
| Friesen Dam | Iowa | Ringgold | 31 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Akers Farms Dam | Iowa | Adair | 31 | Low | Not Rated | 2016 | Grade Stabilization |
| Pierce Dam | Iowa | Lucas | 31 | Low | Not Rated | 1998 | Fire Protection, Stock, Or ... |
| Baker Dam | Iowa | Poweshiek | 31 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Mchugh Dam | Iowa | Monona | 31 | Low | Not Rated | 2011 | Flood Risk Reduction |
| Three Mile Creek Watershed Site 9 | Iowa | Union | 31 | Low | Not Rated | 1970 | Other |
| Lyon County Roadgrade Dam 10-98-48 | Iowa | Lyon | 31 | Low | Not Rated | 1988 | Other |
| Weimann Dam | Iowa | Audubon | 31 | Low | Not Rated | 1980 | Fire Protection, Stock, Or ... |
| Soap Creek Watershed Site 4-112 | Iowa | Appanoose | 31 | Low | Not Rated | 1992 | Fire Protection, Stock, Or ... |
| Rasmussen Dam | Iowa | Polk | 31 | Low | Not Rated | 2006 | Fire Protection, Stock, Or ... |
| Heston/Johnson Dam | Iowa | Lucas | 31 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Mc Clendon Dam | Iowa | Harrison | 31 | Low | Not Rated | 2000 | Fire Protection, Stock, Or ... |
| Burgher Dam | Iowa | Appanoose | 31 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Gerlach Dam | Iowa | Buena Vista | 31 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site S-36-1 | Iowa | Harrison | 31 | Low | Not Rated | 1992 | Fire Protection, Stock, Or ... |
| C & W Investments | Iowa | Appanoose | 31 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Jorgensen Dam | Iowa | Guthrie | 31 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Bergeson Dam | Iowa | Cherokee | 31 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Collins Dam | Iowa | Davis | 31 | Low | Not Rated | 1997 | 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.