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 |
|---|---|---|---|---|---|---|---|
| Lyon County Roadgrade Dam 10-98-48 | Iowa | Lyon | 31 | Low | Not Rated | 1988 | Other |
| East Fork Grand River Watershed Site B-42 | Iowa | Ringgold | 31 | Low | Not Rated | 2006 | Flood Risk Reduction |
| Mc Clendon Dam | Iowa | Harrison | 31 | Low | Not Rated | 2000 | Fire Protection, Stock, Or ... |
| Cramer Farms Dam | Iowa | Union | 31 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Heistand/Erlewine Dam | Iowa | Harrison | 31 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Willow Lake Dam | Iowa | Harrison | 31 | Low | Not Rated | 1976 | Debris Control |
| Turkey Creek Watershed Site 10-26 | Iowa | Cass | 31 | Low | Not Rated | 2005 | Flood Risk Reduction |
| Sterner Dam | Iowa | Ringgold | 31 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| Hainline Dam | Iowa | Ringgold | 31 | Low | Not Rated | 1996 | Fire Protection, Stock, Or ... |
| Weber Creek Subwatershed Site 3-4287 | Iowa | Woodbury | 31 | Low | Not Rated | 1955 | Fire Protection, Stock, Or ... |
| Merrill Dorland Dam | Iowa | Clarke | 31 | Low | Not Rated | 2014 | Grade Stabilization |
| Scnoenjahn Dam | Iowa | Monona | 31 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Simon Dam | Iowa | Washington | 31 | Low | Not Rated | 2006 | Fire Protection, Stock, Or ... |
| William Ory Dam | Iowa | Madison | 31 | Low | - | 2018 | Grade Stabilization |
| Deal Dam | Iowa | Kossuth | 31 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Big Wyacondah Watershed Site 23 | Iowa | Davis | 31 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Three Mile Creek Watershed Site 45-1 | Iowa | Union | 31 | Low | Not Rated | 1970 | Other |
| Walters Creek Watershed Site 15-1 | Iowa | Adams | 31 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Frank Dam | Iowa | Adair | 31 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Heston/Johnson Dam | Iowa | Lucas | 31 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Washington CO Road Dam 26-74-9 | Iowa | Washington | 31 | Low | Not Rated | 2005 | Grade Stabilization |
| Arlington Subwtrshd Sta 27+02 #8 | Iowa | Woodbury | 31 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Wolf Creek Subwatershed Site 5-2 | Iowa | Woodbury | 31 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Kopecky Dam | Iowa | Fremont | 31 | Low | Not Rated | 2005 | Grade Stabilization |
| Mc Clintic Dam | Iowa | Polk | 31 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Friesen Dam | Iowa | Ringgold | 31 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Gross Dam | Iowa | Adair | 31 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Jorgensen Dam | Iowa | Guthrie | 31 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Sievers Dam | Iowa | Louisa | 31 | Low | Not Rated | 2004 | Fire Protection, Stock, Or ... |
| Stills Dam | Iowa | Appanoose | 31 | Low | Not Rated | 2007 | Fire Protection, Stock, Or ... |
| Mosquito of Harrison B | Iowa | Harrison | 31 | Low | Not Rated | 1987 | Fire Protection, Stock, Or ... |
| Beauchamp Dam | Iowa | Jefferson | 31 | Low | Not Rated | 2001 | Fire Protection, Stock, Or ... |
| Woodward Dam | Iowa | Cass | 31 | Low | Not Rated | 1994 | Fire Protection, Stock, Or ... |
| Olson/Cretsinger Dam | Iowa | Guthrie | 31 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Lundberg Dam | Iowa | Montgomery | 31 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site S-36-1 | Iowa | Harrison | 31 | Low | Not Rated | 1992 | Fire Protection, Stock, Or ... |
| John Hackbarth | Iowa | Hardin | 31 | Low | Not Rated | 2002 | Fire Protection, Stock, Or ... |
| Pierce Cr. No. 2 Site J-6 | Iowa | Page | 31 | Low | Not Rated | 1980 | Fire Protection, Stock, Or ... |
| Upper Locust Watershed Site L-30 | Iowa | Wayne | 31 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| Mike Mikkelson Subwatershed 9-2555 | Iowa | Monona | 31 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Arp Dam | Iowa | Johnson | 31 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Cook Dam | Iowa | Dallas | 31 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Knoxville Pond Dam | Iowa | Marion | 31 | Low | Not Rated | 1961 | Recreation |
| Gerlach Dam | Iowa | Buena Vista | 31 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Reed Subwatershed Sta 88+35 #2 | Iowa | Monona | 31 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Gosch Dam | Iowa | Monona | 31 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Wahlert Dam | Iowa | Audubon | 31 | Low | - | 2023 | Recreation |
| Peters Dam | Iowa | Ringgold | 31 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| Moulton Watershed Site A-1 | Iowa | Appanoose | 31 | Low | Satisfactory | 1968 | Flood Risk Reduction |
| Binning Dam | Iowa | Decatur | 31 | Low | Not Rated | 2002 | 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.