Dams in Lyman County, South Dakota
67Total Dams
1High Hazard
5Significant
Dam Safety in Lyman County, South Dakota
Lyman County has 67 dams tracked in the National Inventory of Dams. Of these, 1 are classified as high hazard — meaning failure would probably cause loss of human life. Another 5 carry a significant hazard classification.
The average dam in Lyman County is 61 years old. The most common purpose is fire protection, stock, or small fish pond. The tallest dam is Big Bend Dam at 205 ft.
Explore more: Oldest dams in South Dakota · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Big Bend Dam | High | Not Available | 205 | Flood Risk Reduction | 1963 |
| Orl Walcott #1 | Significant | 53 | Fire Protection, Stock, Or Small Fish Pond | 1967 | |
| Brakke Dam | Significant | 29 | Recreation | 1937 | |
| Byre Dam | Significant | 27 | Recreation | 1940 | |
| Vivian Dam | Significant | 21 | Fire Protection, Stock, Or Small Fish Pond | 1938 | |
| Reliance Dam | Significant | 16 | Recreation | 1935 | |
| Smith Dam | Low | 43 | Fish and Wildlife Pond | 2006 | |
| Bruce Herman | Low | 38 | Fire Protection, Stock, Or Small Fish Pond | 1960 | |
| Hutchinson Dam | Low | 38 | Fire Protection, Stock, Or Small Fish Pond | 1968 | |
| Christensen Dam | Low | 35 | Fire Protection, Stock, Or Small Fish Pond | 1968 | |
| Dejong Bros. 7 | Low | 33 | Fire Protection, Stock, Or Small Fish Pond | 1962 | |
| Dejong Bros 1 | Low | 32 | Fire Protection, Stock, Or Small Fish Pond | 1961 | |
| Floyd Sletto | Low | 31 | Fire Protection, Stock, Or Small Fish Pond | 1972 | |
| Hutchinson Irr. Dam | Low | 30 | Fire Protection, Stock, Or Small Fish Pond | 1976 | |
| Dejongs Bros. 8 | Low | 29 | Fire Protection, Stock, Or Small Fish Pond | 1962 | |
| Straka Bros. | Low | 28 | Fire Protection, Stock, Or Small Fish Pond | 1972 | |
| Dale Ellis | Low | 28 | Fire Protection, Stock, Or Small Fish Pond | 1972 | |
| Merrill Karlen #1 | Low | 28 | Fire Protection, Stock, Or Small Fish Pond | 1954 | |
| Dejong Bros. 12 | Low | 28 | Fire Protection, Stock, Or Small Fish Pond | 1962 | |
| Gus Allen 2 | Low | 28 | Fire Protection, Stock, Or Small Fish Pond | 1956 | |
| Gus Allen 1 | Low | 28 | Fire Protection, Stock, Or Small Fish Pond | 1955 | |
| Lee Anderson | Low | 27 | Fire Protection, Stock, Or Small Fish Pond | 1960 | |
| Archie Millard #1 | Low | 27 | Fire Protection, Stock, Or Small Fish Pond | 1960 | |
| Larsen Dam | Low | 26 | Recreation | 1937 | |
| John Bunker | Low | 26 | Fire Protection, Stock, Or Small Fish Pond | 1961 | |
| Wendell Gilman | Low | 26 | Fire Protection, Stock, Or Small Fish Pond | 1961 | |
| Steve Perry Dam | Low | 26 | Fire Protection, Stock, Or Small Fish Pond | 1997 | |
| Alfred Hutchinson | Low | 26 | Fire Protection, Stock, Or Small Fish Pond | 1961 | |
| Archie Millard #2 | Low | 26 | Fire Protection, Stock, Or Small Fish Pond | 1968 | |
| Dejong Bros 10 | Low | 26 | Fire Protection, Stock, Or Small Fish Pond | 1962 | |
| Dejong Bros 9 | Low | 26 | Fire Protection, Stock, Or Small Fish Pond | 1962 | |
| Merrill Karlen #2 | Low | 26 | Fire Protection, Stock, Or Small Fish Pond | 1958 | |
| Lookout | Low | 25 | Water Supply | 1938 | |
| Fate Dam | Low | 25 | Recreation | 1938 | |
| Joe Svoboda #2 | Low | 25 | Fire Protection, Stock, Or Small Fish Pond | 1952 | |
| Joe Svoboda | Low | 25 | Fire Protection, Stock, Or Small Fish Pond | 1965 | |
| Emil Schulz | Low | 25 | Fire Protection, Stock, Or Small Fish Pond | 1972 | |
| Alfred Urban | Low | 25 | Fire Protection, Stock, Or Small Fish Pond | 1963 | |
| Dejong Bros 11 | Low | 25 | Fire Protection, Stock, Or Small Fish Pond | 1962 | |
| Larsen Irrigation Dam | Low | 25 | Irrigation | 1978 | |
| William Smith | Low | 24 | Fire Protection, Stock, Or Small Fish Pond | 1956 | |
| Booth | Low | Not Rated | 23 | Fire Protection, Stock, Or Small Fish Pond | 1938 |
| Thompson Dam | Low | 23 | Fish and Wildlife Pond | 2010 | |
| Oscar Diess | Low | 22 | Fire Protection, Stock, Or Small Fish Pond | 1953 | |
| Anderson Dam | Low | 21 | Fish and Wildlife Pond | ||
| Velda Ramser Dam | Low | 21 | Fish and Wildlife Pond | 1994 | |
| Kennebec Grazing Assoc. Dam | Low | 21 | Fish and Wildlife Pond | ||
| Mallard Dam | Low | 20 | Fish and Wildlife Pond | 1942 | |
| Smith Dam | Low | 20 | Fish and Wildlife Pond | 1960 | |
| Havemeier | Low | 19 | Fish and Wildlife Pond | 2014 | |
| Summit | Low | 18 | Fish and Wildlife Pond | 1938 | |
| Dorman Dam | Low | 18 | Irrigation | 1939 | |
| Comp Dam | Low | 18 | Fish and Wildlife Pond | 1994 | |
| Nels (nid) | Low | Not Rated | 18 | Fire Protection, Stock, Or Small Fish Pond | 1938 |
| 83 No 2 (nid) | Low | Not Rated | 18 | Fire Protection, Stock, Or Small Fish Pond | 1938 |
| County Line Impoundment | Low | 17 | Fish and Wildlife Pond | 1992 | |
| Bower (nid) | Low | Not Rated | 17 | Fire Protection, Stock, Or Small Fish Pond | 1938 |
| Halverson Dam | Low | 17 | Fish and Wildlife Pond | 2004 | |
| Ehlers Dam | Low | 16 | Fish and Wildlife Pond | 1992 | |
| Alkali (nid) | Low | Not Rated | 16 | Fire Protection, Stock, Or Small Fish Pond | 1938 |
| Leichtnam Dam | Low | 16 | Fish and Wildlife Pond | 2003 | |
| Schindler Dam | Low | 16 | Fish and Wildlife Pond | 2010 | |
| Christensen Dam | Low | 15 | Irrigation | ||
| Cone Dam | Low | 14 | Fish and Wildlife Pond | 2013 | |
| Cannon Dam | Low | 13 | Fish and Wildlife Pond | 2009 | |
| Hafner Dam | Low | 12 | Fire Protection, Stock, Or Small Fish Pond | 1937 | |
| Petersen Dam | Low | 11 | Fire Protection, Stock, Or Small Fish Pond | 1955 |