96Total Dams
20High Hazard
3Significant
Dam Safety in Johnson County, Missouri
Johnson County has 96 dams tracked in the National Inventory of Dams. Of these, 20 are classified as high hazard — meaning failure would probably cause loss of human life. Another 3 carry a significant hazard classification.
The average dam in Johnson County is 61 years old. The most common purpose is flood risk reduction. The tallest dam is Rock Lake Village Dam at 66 ft.
Explore more: Oldest dams in Missouri · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Rock Lake Village Dam | High | Satisfactory | 66 | 2006 | |
| Holden New City Reservoir | High | Satisfactory | 58 | Recreation | 1980 |
| Sexton Lake Dam | High | Satisfactory | 48 | Irrigation | 1968 |
| Kranz Lake Dam | High | Not assessed | 33 | Recreation | 1972 |
| South Fork Blackwater River Dam A- 1 | High | Not assessed | 31 | Flood Risk Reduction | 1964 |
| E.br So Fk Blackwater B-19 | High | Not assessed | 29 | Flood Risk Reduction | 1956 |
| Tackett Lake Dam | High | Not assessed | 27 | Grade Stabilization | 1950 |
| Roberts, Hunter Lake Dam | High | Not assessed | 27 | Flood Risk Reduction | 1972 |
| E.br So Fk Blackwater E-24 | High | Not assessed | 26 | Flood Risk Reduction | 1954 |
| Kesterson Dam | High | Not assessed | 25 | Flood Risk Reduction | 1949 |
| Mccannon Lake Dam | High | Not assessed | 25 | Irrigation | |
| Edmunds Lake Dam | High | Not assessed | 25 | Debris Control | 1976 |
| Rock Island Lake Dam | High | Not assessed | 25 | Recreation | 1905 |
| Holden Reservoir Dam West | High | Not assessed | 25 | Recreation | 1929 |
| Timber Lake Meadows Dam | High | Not assessed | 25 | Recreation | 1963 |
| Lenny Lake Dam | High | Not assessed | 20 | Irrigation | 1960 |
| Skyhaven Lake Dam | High | Not assessed | 20 | Recreation | 1955 |
| South Lake Dam | High | Not assessed | 20 | Irrigation | 1977 |
| Foffel Lake Dam | High | Not assessed | 20 | Recreation | 1963 |
| Pertle Springs Dam | High | Not assessed | 20 | Recreation | 1968 |
| South Fork Blackwater F-1 | Significant | Satisfactory | 48 | Flood Risk Reduction | 1980 |
| Hazel Hill Community Dam | Significant | Satisfactory | 38 | Recreation | 1989 |
| E. Br. S. Fk. Blackwater Wtrshed F-28 | Significant | Not assessed | 26 | Flood Risk Reduction | 1956 |
| Gann Lake Dam | Low | Satisfactory | 43 | Recreation | 1972 |
| Knapp Dam | Low | Satisfactory | 40 | Water Supply | |
| South Fork Blackwater River Dam Lt-67 | Low | Not assessed | 36 | Grade Stabilization | 1984 |
| South Fork Blackwater River Dam E- 7 | Low | Not assessed | 36 | Flood Risk Reduction | 1979 |
| Radmacher Dam Lower | Low | Not assessed | 35 | ||
| South Fork Blackwater River Dam E- 25a | Low | Not assessed | 33 | Grade Stabilization | 1982 |
| E.br So Fk Blackwater B-11 | Low | Not assessed | 33 | Flood Risk Reduction | 1958 |
| South Fork Blackwater River Dam F- 2 | Low | Not assessed | 32 | Flood Risk Reduction | 1965 |
| E.br So Fk Blackwater F-33 | Low | Not assessed | 32 | Flood Risk Reduction | 1958 |
| E.br So Fk Blackwater E-26 | Low | Not assessed | 32 | Flood Risk Reduction | 1956 |
| South Fork Blackwater River Dam F- 3 | Low | Not assessed | 31 | Flood Risk Reduction | 1979 |
| E.br So Fk Blackwater A-5 | Low | Not assessed | 31 | Flood Risk Reduction | 1956 |
| South Fork Blackwater River Dam A-20 | Low | Not assessed | 31 | Grade Stabilization | 1964 |
| Lake Pajaska Dam | Low | Not assessed | 30 | Fish and Wildlife Pond | 1972 |
| Teefly Lake Dam | Low | Not assessed | 30 | Recreation | |
| Lake Paradise Dam | Low | Not assessed | 30 | Recreation | 1950 |
| Wilson Lake Dam | Low | Not assessed | 30 | Recreation | 1969 |
| Hickory Hills Lake Dam | Low | Not assessed | 30 | Recreation | 1969 |
| Ken-mar Acres Lake Dam | Low | Not assessed | 30 | Fire Protection, Stock, Or Small Fish Pond | 1978 |
| South Fork Blackwater River Dam E-29 | Low | Not assessed | 30 | Flood Risk Reduction | 1979 |
| E.br So Fk Blackwater C-13 | Low | Not assessed | 30 | Flood Risk Reduction | 1954 |
| Campbell Lake Dam | Low | Not assessed | 29 | Fire Protection, Stock, Or Small Fish Pond | 1976 |
| Warrensburg Country Club Lake Dam | Low | Not assessed | 29 | Fish and Wildlife Pond | 1977 |
| E.br So Fk Blackwater F-28 | Low | Not assessed | 28 | Flood Risk Reduction | 1954 |
| E.br So Fk Blackwater D-21 | Low | Not assessed | 28 | Flood Risk Reduction | 1956 |
| E.br So Fk Blackwater D-20 | Low | Not assessed | 28 | Flood Risk Reduction | 1958 |
| E.br So Fk Blackwater C-16 | Low | Not assessed | 28 | Flood Risk Reduction | 1954 |
| South Fork Blackwater River Dam A-21 | Low | Not assessed | 28 | Grade Stabilization | 1964 |
| E.br So Fk Blackwater C-15 | Low | Not assessed | 28 | Flood Risk Reduction | 1958 |
| Kallstrom Lake Dam | Low | Not assessed | 27 | Fish and Wildlife Pond | 1971 |
| Easterwood Lake Dam | Low | Not assessed | 27 | Debris Control | 1977 |
| So Fork Blackwater Wtrshd Site E-29 | Low | Not assessed | 27 | Flood Risk Reduction | 1980 |
| E.br So Fk Blackwater G-34 | Low | Not assessed | 27 | Flood Risk Reduction | 1958 |
| South Fork Blackwater River Dam Lt-14 | Low | Not assessed | 27 | Fish and Wildlife Pond | 1981 |
| South Fork Blackwater River Dam A-26 | Low | Not assessed | 27 | Grade Stabilization | 1966 |
| South Fork Blackwater River Dam A- 3 | Low | Not assessed | 27 | Flood Risk Reduction | 1966 |
| Glazebrooks Lake Dam | Low | Not assessed | 26 | Flood Risk Reduction | 1979 |
| E.br So Fk Blackwater C-17 | Low | Not assessed | 26 | Flood Risk Reduction | 1958 |
| South Fork Blackwater River Dam A-27 | Low | Not assessed | 26 | Grade Stabilization | 1965 |
| South Fork Blackwater River Dam A- 2 | Low | Not assessed | 26 | Flood Risk Reduction | 1966 |
| Yukon Lake Dam | Low | Not assessed | 25 | Recreation | |
| Downing Lake Dam | Low | Not assessed | 25 | Fire Protection, Stock, Or Small Fish Pond | |
| Reynolds Lake Dam | Low | Not assessed | 25 | Fire Protection, Stock, Or Small Fish Pond | 1960 |
| Maxson Lake Dam | Low | Not assessed | 25 | Fire Protection, Stock, Or Small Fish Pond | 1951 |
| Jaeger Lake Dam | Low | Not assessed | 25 | Debris Control | 1960 |
| Heiman Lake Dam | Low | Not assessed | 25 | Recreation | |
| Wilson Lake Dam | Low | Not assessed | 25 | Recreation | 1960 |
| Hamilton Lake Dam | Low | Not assessed | 25 | Fire Protection, Stock, Or Small Fish Pond | 1961 |
| Futurama Lake Dam | Low | Not assessed | 25 | Recreation | |
| Lake Buteo Dam | Low | Not assessed | 25 | Recreation | 1927 |
| Netsch Lake Dam | Low | Not assessed | 25 | Irrigation | 1964 |
| Hall Lake Dam | Low | Not assessed | 25 | Recreation | |
| Shumate Lake Dam | Low | Not assessed | 25 | Fire Protection, Stock, Or Small Fish Pond | |
| Eldridge Lake Dam | Low | Not assessed | 25 | Debris Control | 1975 |
| Stropes Lake Dam | Low | Not assessed | 25 | Recreation | |
| Clear Fork Lake Dam | Low | Not assessed | 25 | Recreation | 1936 |
| E. Br. S. Fk. Blackwater Wtrshed G-34 | Low | Not assessed | 25 | Flood Risk Reduction | 1957 |
| Lions Lake Dam | Low | Not assessed | 24 | Fish and Wildlife Pond | 1963 |
| South Fork Blackwater River Dam F-21 | Low | Not assessed | 24 | Grade Stabilization | 1965 |
| E.br So Fk Blackwater D-22 | Low | Not assessed | 24 | Flood Risk Reduction | 1954 |
| E.br So Fk Blackwater E-27 | Low | Not assessed | 24 | Flood Risk Reduction | 1958 |
| South Fork Blackwater River Dam E-26 | Low | Not assessed | 24 | Grade Stabilization | 1965 |
| South Fork Blackwater River Dam A-24 | Low | Not assessed | 22 | Grade Stabilization | 1964 |
| South Fork Blackwater River Dam E-24 | Low | Not assessed | 21 | Grade Stabilization | 1964 |
| Hartman Lake Dam | Low | Not assessed | 20 | Water Supply | |
| Foster Lake Dam | Low | Not assessed | 20 | Recreation | |
| Holden Reservoir Dam East | Low | Not assessed | 20 | Recreation | 1950 |
| Teller Lake Dam | Low | Not assessed | 20 | Recreation | 1962 |
| Shirley Lake Dam | Low | Not assessed | 19 | Irrigation | 1977 |
| Maupin Lake Dam | Low | Not assessed | 19 | Debris Control | 1976 |
| South Fork Blackwater River Dam E-21 | Low | Not assessed | 19 | Grade Stabilization | 1965 |
| Young Lake Dam | Low | Not assessed | 18 | Grade Stabilization | 1975 |
| Mononame425 | Low | Not assessed | 15 | Other | 1960 |