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 |
|---|---|---|---|---|---|---|---|
| Soap Creek Watershed Site 4-78 | Iowa | Appanoose | 28 | Low | Not Rated | 2007 | Flood Risk Reduction |
| Soap Creek Watershed Site 90-73 | Iowa | Wapello | 28 | Low | Not Rated | 2011 | Flood Risk Reduction |
| East Fork Grand River Watershed Site A-116 | Iowa | Ringgold | 28 | Low | Not Rated | 2010 | Flood Risk Reduction |
| East Fork Grand River Watershed Site A-121 | Iowa | Ringgold | 28 | Low | Not Rated | 2010 | Flood Risk Reduction |
| East Fork Grand River Watershed Site B-67 | Iowa | Ringgold | 28 | Low | Not Rated | 2010 | Flood Risk Reduction |
| East Fork Grand River Watershed Site B-31a | Iowa | Ringgold | 28 | Low | Not Rated | 2010 | Flood Risk Reduction |
| Wheeler Dam | Iowa | Montgomery | 27 | Low | Not Rated | 2002 | Fire Protection, Stock, Or ... |
| Lewis Dam | Iowa | Fremont | 27 | Low | Not Rated | 2002 | Recreation |
| Knau Dam | Iowa | Page | 27 | Low | - | 2022 | Grade Stabilization |
| Diede Dam | Iowa | Plymouth | 27 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| Sinnwell Dam | Iowa | Madison | 27 | Low | Not Rated | 1987 | Fire Protection, Stock, Or ... |
| Pearson Dam | Iowa | Henry | 27 | Low | Not Rated | 2006 | Fire Protection, Stock, Or ... |
| Ripperger Dam | Iowa | Warren | 27 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Henry Dam | Iowa | Pottawattamie | 27 | Low | Not Rated | 1990 | Fire Protection, Stock, Or ... |
| Diede Dam | Iowa | Woodbury | 27 | Low | Not Rated | 1996 | Fire Protection, Stock, Or ... |
| Walter Dam | Iowa | Ringgold | 27 | Low | Not Rated | 2005 | Fire Protection, Stock, Or ... |
| Crain Dam | Iowa | Ringgold | 27 | Low | Not Rated | 2006 | Fire Protection, Stock, Or ... |
| Worrel Dam | Iowa | Cedar | 27 | Low | Not Rated | 1950 | Fire Protection, Stock, Or ... |
| Singer Dam | Iowa | Jefferson | 27 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Scoles Dam | Iowa | Fremont | 27 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Gordin Dam | Iowa | Marion | 27 | Low | Not Rated | 1995 | Fire Protection, Stock, Or ... |
| Hopp Dam | Iowa | Crawford | 27 | Low | Not Rated | 2006 | Fire Protection, Stock, Or ... |
| Mellot Dam | Iowa | Montgomery | 27 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Ripperger Dam | Iowa | Union | 27 | Low | Not Rated | 1986 | Fire Protection, Stock, Or ... |
| Beach Dam | Iowa | Lee | 27 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Johnson Dam | Iowa | Monona | 27 | Low | Not Rated | 2008 | Fire Protection, Stock, Or ... |
| Forsythe Dam | Iowa | Davis | 27 | Low | Not Rated | 1998 | Fire Protection, Stock, Or ... |
| Stoeffer Dam | Iowa | Story | 27 | Low | Not Rated | 1987 | Fire Protection, Stock, Or ... |
| Kent Dam | Iowa | Lucas | 27 | Low | Not Rated | 1981 | Fire Protection, Stock, Or ... |
| Muhlbauer Dam | Iowa | Crawford | 27 | Low | Not Rated | 2001 | Fire Protection, Stock, Or ... |
| Eakins | Iowa | Davis | 27 | Low | Not Rated | 2002 | Grade Stabilization |
| Stajcar Dam | Iowa | Appanoose | 27 | Low | Not Rated | 2005 | Fire Protection, Stock, Or ... |
| Hatfield Dam | Iowa | Adair | 27 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| Bruggemeyer Dam | Iowa | Henry | 27 | Low | Not Rated | 2000 | Grade Stabilization |
| Dalton Dam | Iowa | Taylor | 27 | Low | Not Rated | 1984 | Fire Protection, Stock, Or ... |
| Kelly Dam | Iowa | Union | 27 | Low | Not Rated | 2002 | Fire Protection, Stock, Or ... |
| Zimmerman Dam | Iowa | Warren | 27 | Low | Not Rated | 1998 | Fire Protection, Stock, Or ... |
| Strathman Dam | Iowa | Davis | 27 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| Messerschmitt Dam | Iowa | Wapello | 27 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| Hoffman Dam | Iowa | Hardin | 27 | Low | Not Rated | 1994 | Fire Protection, Stock, Or ... |
| Goos Dam | Iowa | Tama | 27 | Low | Not Rated | 1987 | Fire Protection, Stock, Or ... |
| Williamson Dam | Iowa | Appanoose | 27 | Low | Not Rated | 1987 | Fire Protection, Stock, Or ... |
| Sawgrass Park Dam | Iowa | Polk | 27 | Low | Fair | 1980 | Recreation |
| Bloomquist Dam | Iowa | Jefferson | 27 | Low | Not Rated | 2002 | Grade Stabilization |
| Cibula Dam | Iowa | Tama | 27 | Low | Not Rated | 2003 | Fire Protection, Stock, Or ... |
| Norelius Dam | Iowa | Crawford | 27 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| Baack Dam | Iowa | Warren | 27 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| Crawford Dam | Iowa | Washington | 27 | Low | Not Rated | 2001 | Grade Stabilization |
| Volk Dam | Iowa | Marion | 27 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Carlson Dam | Iowa | Monona | 27 | Low | Not Rated | 1971 | 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.