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 |
|---|---|---|---|---|---|---|---|
| Van Wyk/Vogel Dam | Iowa | Poweshiek | 33 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Slip Bluff Park Dam | Iowa | Decatur | 33 | Low | Not Rated | 1970 | Recreation |
| Lange Dam | Iowa | Madison | 33 | Low | — | 2021 | Grade Stabilization |
| Marengo Golf & Country Club Dam | Iowa | Iowa | 33 | Low | Not Rated | 2000 | Irrigation |
| West Douglas Watershed Site L-1 | Iowa | Adams | 33 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Crab Tree Lake Dam | Iowa | Marshall | 33 | Significant | Satisfactory | 1948 | Recreation |
| Lorenzen Dam | Iowa | Clinton | 33 | Low | Not Rated | 1998 | Fire Protection, Stock, Or ... |
| Three Mile Creek Watershed Site 3 | Iowa | Union | 33 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Rock Creek Dam | Iowa | Jasper | 33 | Significant | Fair | — | Recreation |
| Backbone Dam | Iowa | Delaware | 33 | Significant | Satisfactory | 1938 | Recreation |
| Soap Creek Watershed Site 4-113 | Iowa | Appanoose | 33 | Low | Not Rated | 1992 | Fire Protection, Stock, Or ... |
| Becker Dam | Iowa | Webster | 33 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| English Bench Watershed Site 7 | Iowa | Allamakee | 33 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Buck Dam | Iowa | Crawford | 33 | Low | Not Rated | 2000 | Grade Stabilization |
| Anderzhon Dam | Iowa | Fremont | 33 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Owens Dam | Iowa | Jasper | 33 | Low | Not Rated | 1980 | Fire Protection, Stock, Or ... |
| Mud Creek Subwatershed Site 8-1 | Iowa | Woodbury | 33 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Cummins Dam | Iowa | Adair | 33 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| Springer Dam | Iowa | Greene | 33 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Beach Dam | Iowa | Henry | 33 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Commers Dam | Iowa | Montgomery | 33 | Low | — | 2023 | Flood Risk Reduction |
| Higdon Dam | Iowa | Decatur | 33 | Low | Not Rated | 2001 | Fire Protection, Stock, Or ... |
| Whiskey Hollow Watershed - Lewis Site | Iowa | Louisa | 33 | Low | Not Rated | 1986 | Fire Protection, Stock, Or ... |
| Angran Dam | Iowa | Monroe | 33 | Low | Not Rated | 2001 | Grade Stabilization |
| Iowa Noname41 | Iowa | Pottawattamie | 33 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Troublesome Cr Watershed Site 38-8 | Iowa | Audubon | 33 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| West Wolf Creek Subwatershed Site 26 | Iowa | Woodbury | 33 | Low | Not Rated | 1995 | Fire Protection, Stock, Or ... |
| Lehr Dam | Iowa | Lucas | 33 | Low | Not Rated | 2006 | Grade Stabilization |
| Cheers Dam | Iowa | Union | 33 | Low | Not Rated | 2005 | Grade Stabilization |
| College Corner Subwatershed Site 3-1 | Iowa | Woodbury | 33 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Iowa Noname96 | Iowa | Wayne | 33 | Low | Not Rated | 1980 | Fire Protection, Stock, Or ... |
| Corey Family Farms Dam | Iowa | Calhoun | 33 | Low | Not Rated | 2004 | Fire Protection, Stock, Or ... |
| Bacon Creek Watershed Site H-2 | Iowa | Woodbury | 33 | Low | Not Rated | 1984 | Flood Risk Reduction |
| Evans/Heston Dam | Iowa | Lucas | 33 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Troublesome Cr Watershed Site 86-1 | Iowa | Audubon | 33 | Low | Not Rated | 1992 | Fire Protection, Stock, Or ... |
| Davids Creek Watershed Site 10-2 | Iowa | Audubon | 33 | Significant | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Reed Subwatershed Site 1-1 | Iowa | Monona | 33 | Low | Not Rated | 1990 | Flood Risk Reduction |
| Crawford Creek Subwatershed Site M-1 | Iowa | Ida | 33 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Knapp Dam | Iowa | Davis | 33 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Soap Creek Watershed Site 68-77 | Iowa | Monroe | 33 | Low | Not Rated | 2005 | Flood Risk Reduction |
| Twelve Mile Creek Watershed Site 23 | Iowa | Union | 33 | Low | Not Rated | 1988 | Fire Protection, Stock, Or ... |
| Hulen/Murphy Dam | Iowa | Des Moines | 33 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Wolf Creek Subwatershed Site 3-1 | Iowa | Woodbury | 33 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Cresswell Dam | Iowa | Woodbury | 33 | Low | Not Rated | 1954 | Fire Protection, Stock, Or ... |
| North Pigeon Cr Watershed Site 16-1 | Iowa | Pottawattamie | 33 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Larson Dam | Iowa | Boone | 33 | Low | Not Rated | 2001 | Fire Protection, Stock, Or ... |
| Fairfield Waterworks Dam No 2 | Iowa | Jefferson | 33 | Low | Satisfactory | 1900 | Water Supply |
| Carlson Dam | Iowa | Audubon | 33 | Low | Not Rated | 1950 | Fire Protection, Stock, Or ... |
| Jonbar Ranch Dam | Iowa | Dallas | 33 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Twelve Mile Creek Watershed Site D-41-A-3 | Iowa | Union | 33 | Low | Not Rated | 2006 | Flood Risk Reduction |
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.