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 |
|---|---|---|---|---|---|---|---|
| Larsen Dam | Iowa | Pottawattamie | 38 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Harkrader Dam | Iowa | Dallas | 38 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Kruger Dam | Iowa | Greene | 38 | Low | Not Rated | 2013 | Flood Risk Reduction |
| Youngren Dam | Iowa | Webster | 38 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Bennett Dam | Iowa | Polk | 38 | Low | Not Rated | 1987 | Fire Protection, Stock, Or ... |
| Woodbury County Roadgrade Dam 30-88-43 | Iowa | Woodbury | 38 | Low | Not Rated | 1999 | Other |
| Kness Dam | Iowa | Monroe | 38 | Low | Not Rated | 1987 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site N-28-1 | Iowa | Shelby | 38 | Low | Not Rated | 1972 | Fire Protection, Stock, Or ... |
| Stephens Forest Dam #1 | Iowa | Lucas | 38 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Phillips Subwatershed Site M-6600 | Iowa | Monona | 38 | Low | Not Rated | 1956 | Fire Protection, Stock, Or ... |
| Tate Dam | Iowa | Crawford | 38 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Mc Daniel Dam | Iowa | Story | 38 | Low | Not Rated | 1963 | Recreation |
| Schwartz Dam | Iowa | Wapello | 38 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Cottonwood-Green Valley Subws 50+40 #2 | Iowa | Monona | 38 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Pilot Rock Subwtrshd Sta 30+40 #1-C | Iowa | Cherokee | 38 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Brauninger Dam | Iowa | Woodbury | 38 | Low | Not Rated | 1996 | Fire Protection, Stock, Or ... |
| Pony Creek Watershed Site 31 | Iowa | Mills | 38 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Nutt Hollow Subwatershed Site 2-3176 | Iowa | Monona | 38 | Low | Not Rated | 1958 | Fire Protection, Stock, Or ... |
| Campbell Dam | Iowa | Ida | 38 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| Southwest Iowa Egg Cooperative Dam | Iowa | Cass | 38 | Low | Not Rated | 1999 | Water Supply |
| Thomsen Dam | Iowa | Woodbury | 38 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Troublesome Cr Watershed Site 38-2 | Iowa | Audubon | 38 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Wunschel Dam | Iowa | Ida | 38 | Low | Not Rated | 1997 | Fire Protection, Stock, Or ... |
| Judge Dam | Iowa | Tama | 38 | Low | Not Rated | 1955 | Recreation |
| Dunham Dam | Iowa | Johnson | 38 | Low | Not Rated | 1978 | Fire Protection, Stock, Or ... |
| Lake Ellis Dam | Iowa | Lucas | 38 | Significant | Fair | 1993 | Water Supply |
| Gant Creek Watershed Site B-1 | Iowa | Plymouth | 38 | Low | Not Rated | 1967 | Fire Protection, Stock, Or ... |
| Southfork Dam | Iowa | Dallas | 38 | High | Satisfactory | 1988 | Other |
| Carbaugh Dam | Iowa | Montgomery | 38 | Low | — | 2023 | Grade Stabilization |
| Mc Aninch Dam | Iowa | Warren | 38 | Low | Not Rated | 1977 | Fire Protection, Stock, Or ... |
| Little Beaver Subwatershed M-10001 | Iowa | Woodbury | 38 | Low | Not Rated | 1957 | Fire Protection, Stock, Or ... |
| Bitter Creek Subwatershed Site E-1 | Iowa | Ida | 38 | Low | Not Rated | 1995 | Fire Protection, Stock, Or ... |
| Uhl Dam | Iowa | Woodbury | 38 | Low | Not Rated | 1969 | Fire Protection, Stock, Or ... |
| Twelve Mile Creek Watershed Site D-35 | Iowa | Union | 38 | Low | Not Rated | 1988 | Fire Protection, Stock, Or ... |
| Carstens & Stover Dam | Iowa | Crawford | 38 | Low | Not Rated | 1971 | Fire Protection, Stock, Or ... |
| Troublesome Cr Watershed Site 42-2 | Iowa | Audubon | 38 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Thompson Dam | Iowa | Lee | 38 | Low | Not Rated | 1979 | Fire Protection, Stock, Or ... |
| Baker Subwatershed Site 1-3 | Iowa | Monona | 38 | Low | Not Rated | 1959 | Fire Protection, Stock, Or ... |
| Mucky Creek Subwatershed Site 6-1 | Iowa | Monona | 38 | Low | Not Rated | 1966 | Fire Protection, Stock, Or ... |
| Troublesome Cr Watershed Site 36-5 | Iowa | Audubon | 38 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Phillips Subwatershed Site M-17312 | Iowa | Monona | 38 | Low | Not Rated | 1956 | Fire Protection, Stock, Or ... |
| Mill Picayune Watershed Site M-24-6 | Iowa | Shelby | 38 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Walker Dam | Iowa | Des Moines | 38 | Low | Not Rated | 1985 | Fire Protection, Stock, Or ... |
| Dickman Subwatershed Site 3-1 | Iowa | Woodbury | 38 | Low | Not Rated | 1973 | Fire Protection, Stock, Or ... |
| Camp Creek Subwatershed Site M-6a | Iowa | Woodbury | 38 | Low | Not Rated | 1998 | Fire Protection, Stock, Or ... |
| Muscatine County Roadgrade Dam 14-77-1e | Iowa | Muscatine | 38 | Significant | Fair | 1971 | Other |
| Central Holding Co. Dam | Iowa | Carroll | 38 | Low | Not Rated | 1988 | Fire Protection, Stock, Or ... |
| Pleasant Valley Subwtrshd 1j-4550 | Iowa | Ida | 38 | Low | Not Rated | 1963 | Fire Protection, Stock, Or ... |
| Mucky Creek Subwatershed Sta 26+20 #3 | Iowa | Monona | 38 | Low | Not Rated | 1965 | Fire Protection, Stock, Or ... |
| Twelvemile Creek Watershed Site D-41-A2 | Iowa | Union | 38 | Low | Not Rated | 1999 | 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.