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 |
|---|---|---|---|---|---|---|---|
| Eagle Pond Dam | Iowa | Boone | 49 | Low | Not Rated | - | Recreation |
| Jsc Farms Dam | Iowa | Dallas | 49 | Significant | Satisfactory | 1995 | Recreation |
| Ryan Henschal Watershed Site E-2 | Iowa | Pottawattamie | 49 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Upper Beaver Subwatershed Site 50-1 | Iowa | Monona | 49 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| Upper Beaver Subwatershed Site 4-1 | Iowa | Monona | 49 | Low | Not Rated | 1968 | Fire Protection, Stock, Or ... |
| West Sunnyside Watershed Site C-1-2 | Iowa | Plymouth | 49 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Parnell Creek Subwatershed Site 8-2 | Iowa | Woodbury | 49 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Barcal Dam | Iowa | Plymouth | 49 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Wayne Co. Roadgrade Dam - Garber Site | Iowa | Wayne | 49 | Low | Not Rated | 1996 | Other |
| Dane Ridge Watershed Site D-1-4 | Iowa | Crawford | 49 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Storm Lake - Northeast Dredge Spoil Disposal Dam | Iowa | Buena Vista | 49 | High | Satisfactory | 2005 | Other |
| Mill Picayune Watershed Site S-10-2 | Iowa | Harrison | 49 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Dane Ridge Watershed Site D-10 | Iowa | Crawford | 49 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Gustafson Lake Dam | Iowa | Buena Vista | 49 | Significant | Not Rated | 1974 | Recreation |
| Polk County Roadgrade Dam 3-80-24 | Iowa | Polk | 49 | Low | Not Rated | 1992 | Other |
| Johnson (Oscar) Dam | Iowa | Harrison | 49 | Low | Not Rated | 2011 | Flood Risk Reduction |
| Smokey Hollow Subwatershed Site 2 | Iowa | Woodbury | 49 | High | Fair | 1986 | Flood Risk Reduction |
| Waubonsie Cr. Watershed Site 3-3 | Iowa | Mills | 49 | Significant | Satisfactory | 1993 | Flood Risk Reduction |
| Lucas County Roadgrade Dam (L-1) | Iowa | Lucas | 49 | Low | Not Rated | 1989 | Other |
| Pony Creek Watershed Site 30 | Iowa | Mills | 49 | Significant | Satisfactory | 1964 | Flood Risk Reduction |
| Mill Picayune Watershed Site S-8-2 | Iowa | Harrison | 48 | Low | Not Rated | 1984 | Fire Protection, Stock, Or ... |
| Pony Creek Watershed Site 15 | Iowa | Mills | 48 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site P-64-1 | Iowa | Shelby | 48 | Low | Not Rated | 1986 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-18-4 | Iowa | Shelby | 48 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Pony Creek Watershed Site 22 | Iowa | Mills | 48 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-3-1 | Iowa | Harrison | 48 | Low | Not Rated | 1964 | Fire Protection, Stock, Or ... |
| Lake of The Hills Dam | Iowa | Scott | 48 | High | Satisfactory | 1972 | Other |
| Neustrom Subwatershed Site M-4 | Iowa | Woodbury | 48 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Carpenter Dam | Iowa | Warren | 48 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Pony Creek Watershed Site 20 | Iowa | Mills | 48 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Upper Centerville Reservoir Dam | Iowa | Appanoose | 48 | Significant | Fair | 1912 | Water Supply |
| Naurude Dam | Iowa | Monona | 48 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Reed Subwatershed Sta 46+55 #11 | Iowa | Monona | 48 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Holden Dam | Iowa | Iowa | 48 | Low | Not Rated | 2000 | Fire Protection, Stock, Or ... |
| Schildberg Dam | Iowa | Adair | 48 | Low | Not Rated | 1952 | Recreation |
| Walling Subwatershed Sta 42+05 #4 | Iowa | Woodbury | 48 | Low | Not Rated | 1953 | Fire Protection, Stock, Or ... |
| Kruse Dam | Iowa | Boone | 48 | Low | Not Rated | 1956 | Fire Protection, Stock, Or ... |
| Walling Subwatershed Sta 77+50 #1 | Iowa | Woodbury | 48 | Low | Not Rated | 1953 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-21-5 | Iowa | Shelby | 48 | Significant | Satisfactory | 1980 | Fire Protection, Stock, Or ... |
| Schaben Dam | Iowa | Harrison | 48 | Low | Not Rated | 1970 | Fire Protection, Stock, Or ... |
| Mosquito Creek Watershed Site 6-5 | Iowa | Harrison | 47 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Neustrom Subwatershed Site 13-1 | Iowa | Woodbury | 47 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Arrowhead Lake Dam | Iowa | Pottawattamie | 47 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Bacon Creek Watershed Site A-2-3 | Iowa | Woodbury | 47 | Significant | Poor | 1978 | Flood Risk Reduction |
| Covered Bridge Estates Dam | Iowa | Madison | 47 | High | Satisfactory | 2005 | Flood Risk Reduction |
| Lum Hollow Subwatershed 9-3544 | Iowa | Woodbury | 47 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Swine Graphics Dam #2 | Iowa | Clarke | 47 | Low | Not Rated | 2005 | Water Supply |
| Sunrise Subwatershed Site 6-1 | Iowa | Woodbury | 47 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-29-2 | Iowa | Crawford | 47 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Waubonsie Cr. Watershed Site 36-3 | Iowa | Mills | 47 | Low | Not Rated | 1983 | 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.