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 |
|---|---|---|---|---|---|---|---|
| Crawford Creek Subwatershed Site 13f-1 | Iowa | Ida | 40 | Low | Not Rated | 1974 | Fire Protection, Stock, Or ... |
| Heishman Dam | Iowa | Poweshiek | 40 | Low | Not Rated | 2017 | Recreation |
| Coberly/Swenson Dam | Iowa | Monona | 40 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Davis-Battle Cr. Watershed Site C-12-2 | Iowa | Monona | 39 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Stratton Dam | Iowa | Story | 39 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Lower Centerville Reservoir Dam | Iowa | Appanoose | 39 | Significant | Fair | 1912 | Water Supply |
| Ryan Henschal Watershed Site H-1 | Iowa | Pottawattamie | 39 | Low | Not Rated | 1962 | Fire Protection, Stock, Or ... |
| Timm Dam | Iowa | Crawford | 39 | Low | Not Rated | 1975 | Fire Protection, Stock, Or ... |
| Ahquabi Dredge Spoil Containment Dam 1a | Iowa | Warren | 39 | Low | Not Rated | 1995 | Debris Control |
| Lawson Subwatershed Site 1-1 | Iowa | Monona | 39 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Crawford County Roadgrade Dam 27-83-38 | Iowa | Crawford | 39 | Low | Not Rated | 2000 | Fire Protection, Stock, Or ... |
| Reed Dam | Iowa | Clarke | 39 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| Virden Creek Dam | Iowa | Black Hawk | 39 | High | Satisfactory | 1979 | Flood Risk Reduction |
| Bacon Creek Watershed Site K-1 | Iowa | Woodbury | 39 | Low | Not Rated | 1976 | Flood Risk Reduction |
| Big Park Watershed Site D-4 | Iowa | Crawford | 39 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Dane Ridge Watershed Site D-2-1 | Iowa | Crawford | 39 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Straight Dam | Iowa | Harrison | 39 | Low | Not Rated | 2011 | Flood Risk Reduction |
| Dane Ridge Watershed Site D-1-6 | Iowa | Crawford | 39 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Troublesome Cr Watershed Site 38-2 | Iowa | Audubon | 39 | Low | Not Rated | 1982 | Fire Protection, Stock, Or ... |
| Dane Ridge Watershed Site D-1-5 | Iowa | Crawford | 39 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| West Beaver Subwatershed Sta 51+80 | Iowa | Monona | 39 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Dane Ridge Watershed Site C-2 | Iowa | Crawford | 39 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Crawford Creek Subwatershed Site 4-1 | Iowa | Ida | 39 | Low | Not Rated | 1976 | Fire Protection, Stock, Or ... |
| Zellmer Subwtrshd #M 106+26 | Iowa | Woodbury | 39 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Willow Creek Subwatershed Site 3-1 | Iowa | Woodbury | 39 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Clark Dam | Iowa | Woodbury | 39 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Badger Creek Watershed Site 30-1 | Iowa | Madison | 39 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Troublesome Creek Watershed Site 85-3 | Iowa | Audubon | 39 | Low | Not Rated | 1999 | Fire Protection, Stock, Or ... |
| Wolf Creek Subwatershed Site 4-4 | Iowa | Woodbury | 39 | Low | Not Rated | 1991 | Fire Protection, Stock, Or ... |
| Mike Mikkelson Subwatershed 5-10316 | Iowa | Monona | 39 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Gray Dam | Iowa | Montgomery | 39 | Low | Not Rated | 1989 | Fire Protection, Stock, Or ... |
| Pierce Creek No 1 Watershed Site 1 | Iowa | Page | 39 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Posten Dam | Iowa | Page | 39 | Low | Not Rated | 1975 | Fire Protection, Stock, Or ... |
| Meadow Lake Dam | Iowa | Adair | 39 | Significant | Fair | 1964 | Recreation |
| Assman #4 Grade Stabilization Structure | Iowa | Crawford | 39 | Low | Not Rated | 2010 | Fire Protection, Stock, Or ... |
| Jasper County Roadgrade Dam 20-81-20 | Iowa | Jasper | 39 | Low | Not Rated | 2002 | Grade Stabilization |
| Little Egypt Subwatershed Sta 125+21 #M | Iowa | Woodbury | 39 | Low | Not Rated | 1961 | Fire Protection, Stock, Or ... |
| Union County Roadgrade Dam 29-73-29 | Iowa | Union | 39 | Low | Not Rated | 1993 | Other |
| Soap Creek Watershed Site 90-85 | Iowa | Wapello | 39 | Low | Not Rated | 2011 | Flood Risk Reduction |
| Mike Mikkelson Subwatershed 3-1630 | Iowa | Monona | 39 | Low | Not Rated | 1960 | Fire Protection, Stock, Or ... |
| Windy Hill Subwatershed Site 2-1 | Iowa | Woodbury | 39 | Low | Not Rated | 1975 | Fire Protection, Stock, Or ... |
| Ryan Henschal Watershed Site A-2 | Iowa | Pottawattamie | 39 | Low | Not Rated | 1976 | Flood Risk Reduction |
| Mud Creek Subwatershed Site 13b-1 | Iowa | Woodbury | 39 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Rock Valley Lake Dam | Iowa | Wayne | 39 | Significant | Fair | 2008 | Recreation |
| Dane Ridge Watershed Site D-14 | Iowa | Crawford | 39 | Low | Not Rated | 1980 | Fire Protection, Stock, Or ... |
| Simon Run Watershed Site 9-3w | Iowa | Pottawattamie | 39 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Neustrom Subwatershed Site M-5 | Iowa | Woodbury | 39 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| West Douglas Watershed Site L-6 | Iowa | Adams | 39 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Ledgewood Creek Watershed Site M-2 | Iowa | Fremont | 39 | Low | Not Rated | 1973 | Water Supply |
| Iowa Noname84 | Iowa | Washington | 39 | Low | Not Rated | 1974 | 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.