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 |
|---|---|---|---|---|---|---|---|
| Rhinehart Dam | Iowa | Poweshiek | 29 | Low | Not Rated | 1987 | Fire Protection, Stock, Or ... |
| Webster Dam | Iowa | Dallas | 29 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Goldin Dam | Iowa | Linn | 29 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Nikkel Dam | Iowa | Poweshiek | 29 | Low | Not Rated | 1990 | Fire Protection, Stock, Or ... |
| Slater Dam | Iowa | Dallas | 29 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Dickinson Dam | Iowa | Washington | 29 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Young Dam | Iowa | Buena Vista | 29 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Gannon Dam | Iowa | Jasper | 29 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Kolls Dam | Iowa | Jasper | 29 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Lawyer Dam | Iowa | Warren | 29 | Low | Not Rated | 1995 | Fire Protection, Stock, Or ... |
| Hanson Dam | Iowa | Clayton | 29 | Low | Not Rated | 2004 | Fire Protection, Stock, Or ... |
| Iowa Noname81 | Iowa | Warren | 29 | Low | Not Rated | 1974 | Recreation |
| Anna Smith Dam | Iowa | Cass | 29 | Low | - | 2023 | Grade Stabilization |
| Sargent Dam | Iowa | Clarke | 29 | Low | Not Rated | 1993 | Fire Protection, Stock, Or ... |
| Jorgensen Dam | Iowa | Audubon | 29 | Low | Not Rated | 1962 | Fire Protection, Stock, Or ... |
| Miller Dam | Iowa | Page | 29 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Balzer Dam | Iowa | Muscatine | 29 | Low | Not Rated | 1964 | Recreation |
| Saint Patrick Church Dam | Iowa | Pottawattamie | 29 | Low | Not Rated | 2002 | Fire Protection, Stock, Or ... |
| Sump Dam | Iowa | Page | 29 | Low | Not Rated | 2013 | Grade Stabilization |
| Parsons Dam | Iowa | Linn | 29 | Low | Not Rated | 2004 | Recreation |
| Jungman Dam | Iowa | Dallas | 29 | Low | Not Rated | 1990 | Fire Protection, Stock, Or ... |
| Williams Dam | Iowa | Lee | 29 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Kendall Dam | Iowa | Monroe | 29 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| Claiser Dam | Iowa | Union | 29 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Mckean Dam | Iowa | Adams | 29 | Low | Not Rated | 2013 | Grade Stabilization |
| Iowa Noname44 | Iowa | Scott | 29 | Low | Not Rated | 1966 | Recreation |
| Miller Dam | Iowa | Johnson | 29 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Petersen Dam (Merle Petersen) | Iowa | Guthrie | 29 | Low | Not Rated | 2009 | Grade Stabilization |
| Arnold Dam | Iowa | Wapello | 29 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| Steding Dam | Iowa | Hardin | 29 | Low | Not Rated | 2003 | Fire Protection, Stock, Or ... |
| Hynick Dam | Iowa | Mahaska | 29 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Veldhuizen Dam | Iowa | Mahaska | 29 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Greiner Dam | Iowa | Washington | 29 | Low | Not Rated | 2005 | Fire Protection, Stock, Or ... |
| Crawford Dam | Iowa | Cherokee | 29 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Chad Leffler Dam | Iowa | Monroe | 29 | Significant | Satisfactory | 2016 | Flood Risk Reduction |
| Bradford/Miller Dam | Iowa | Appanoose | 29 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Schaefer Dam | Iowa | Wayne | 29 | Low | Not Rated | 1970 | Recreation |
| Clausen Dam | Iowa | Clinton | 29 | Low | Not Rated | 1975 | Fire Protection, Stock, Or ... |
| Franklin Dam | Iowa | Van Buren | 29 | Low | Not Rated | 1986 | Fire Protection, Stock, Or ... |
| Iowa Noname74 | Iowa | Louisa | 29 | Low | Not Rated | 1976 | Recreation |
| Vontersch/Ahrenholtz Dam | Iowa | Crawford | 29 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Wagner Dam | Iowa | Poweshiek | 29 | Low | Not Rated | 2001 | Grade Stabilization |
| Berg Dam | Iowa | Keokuk | 29 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Wilkinson Dam | Iowa | Poweshiek | 29 | Low | Not Rated | 2005 | Grade Stabilization |
| Johnston Dam | Iowa | Van Buren | 29 | Low | Not Rated | 2005 | Grade Stabilization |
| Courtney Dam | Iowa | Boone | 29 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Perkins Dam | Iowa | Mahaska | 29 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Matt Leichty Dam | Iowa | Henry | 29 | Low | Not Rated | 2008 | Grade Stabilization |
| Branhagen Dam | Iowa | Winneshiek | 29 | Low | - | 2021 | Fish and Wildlife Pond |
| Arco Dam | Iowa | Dickinson | 29 | Low | Not Rated | 1968 | 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.