111Total Dams
38High Hazard
8Significant
Dam Safety in Johnson County, Kansas
Johnson County has 111 dams tracked in the National Inventory of Dams. Of these, 38 are classified as high hazard — meaning failure would probably cause loss of human life. Another 8 carry a significant hazard classification. Currently, 7 dams have a condition assessment of poor or unsatisfactory.
The average dam in Johnson County is 54 years old. The most common purpose is recreation. The tallest dam is Shawnee Mission Park Dam at 72 ft.
Explore more: Oldest dams in Kansas · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Shawnee Mission Park Dam | High | Fair | 72 | Recreation | 1958 |
| (new) Olathe Lake | High | Fair | 69 | Water Supply | 1955 |
| Shadow Lake Dam | High | Satisfactory | 65 | Flood Risk Reduction | |
| Black Swan Lake Dam | High | Fair | 62 | Recreation | 1982 |
| Gardner Lake Dam | High | Fair | 61 | Water Supply | 1940 |
| Lakeview Estates | High | Poor | 55 | Recreation | |
| Lexington Lake Park (rieke Lake Dam) | High | Satisfactory | 53 | Recreation | |
| Tomahawk Hills Cc Dam | High | Fair | 52 | Irrigation | 1955 |
| Lake Lenexa | High | Satisfactory | 46 | Recreation | 2006 |
| Enchanted Lake | High | Satisfactory | 43 | Fish and Wildlife Pond | 2014 |
| Cedar Lake (old Olathe Lake) | High | Poor | 39 | Water Supply | 1931 |
| Spring Hill Water Supply Dam | High | Poor | 37 | Water Supply | 1953 |
| High | Not assessed | 34 | Fire Protection, Stock, Or Small Fish Pond | 1955 | |
| Mize Lake | High | Satisfactory | 32 | Flood Risk Reduction | 2005 |
| Lionsgate Dam | High | Fair | 31 | Recreation | 1965 |
| Seven Hills Dam | High | Poor | 30 | Recreation | 1965 |
| Dam 1 (falcon Ridge Golf Course) | High | Fair | 29 | Recreation | |
| East Rodrock Lake | High | Not assessed | 28 | Recreation | 2010 |
| Willow Lake | High | Fair | 28 | Fire Protection, Stock, Or Small Fish Pond | 1960 |
| Heritage Park Dam | High | Satisfactory | 27 | Recreation | |
| Harding Dam | High | Fair | 27 | Flood Risk Reduction | 2014 |
| Osborn Pond | High | Not assessed | 26 | Recreation | 1997 |
| Sunflower Pond B Dam | High | Not assessed | 26 | 1943 | |
| Oxford Pointe | High | Satisfactory | 25 | Recreation | 1959 |
| Walden Pond Dam | High | Fair | 25 | Recreation | 1937 |
| High | Satisfactory | 24 | Flood Risk Reduction | 2003 | |
| Nottingham Lake | High | Fair | 24 | Fire Protection, Stock, Or Small Fish Pond | |
| High | Not assessed | 24 | Fire Protection, Stock, Or Small Fish Pond | ||
| South Frisco | High | Poor | 22 | Other | 1868 |
| Oak Tree Meadows Dam | High | Satisfactory | 22 | Recreation | 2009 |
| North Frisco Dam | High | Satisfactory | 21 | Other | 1868 |
| Kc Roadway Parkland South | High | Fair | 21 | Recreation | 2004 |
| Sprint Campus Lake 2 / 3 | High | Satisfactory | 20 | Irrigation | 2001 |
| Bluestem Dam (previously Daybreak Ridge Dam) | High | Fair | 20 | Other | 1962 |
| South Lake Park Dam | High | Fair | 17 | Recreation | |
| Sprint Campus Lake 1 | High | Satisfactory | 17 | Irrigation | 2001 |
| Hawthorne Valley Lake Dam | High | Fair | 16 | Recreation | |
| Waterworks Dam | High | Not assessed | 9 | Other | 1920 |
| Oak Country Dam/carpenter Dam | Significant | Poor | 34 | Irrigation | 1962 |
| Dam 2 & 3 (falcon Ridge Golf Course) | Significant | Fair | 31 | Recreation | |
| Significant | Not assessed | 30 | 1960 | ||
| Private Dam | Significant | Not assessed | 25 | Recreation | 1970 |
| Walker Dam | Significant | Not assessed | 25 | Fire Protection, Stock, Or Small Fish Pond | 1967 |
| Spears Dam | Significant | Satisfactory | 19 | Recreation | |
| Eastland/elmer Dam | Significant | Not assessed | 18 | Fire Protection, Stock, Or Small Fish Pond | 1999 |
| Lake at Southwick - 199th & Mission Rd | Significant | Satisfactory | 15 | Fire Protection, Stock, Or Small Fish Pond | 1970 |
| Kill Creek Regional Park Lake | Low | Not assessed | 45 | Recreation | 2000 |
| Dam No 1 | Low | Not assessed | 45 | Recreation | 1965 |
| Low | Poor | 42 | Other | ||
| Low | Not assessed | 41 | Recreation | 1968 | |
| Low | Not assessed | 38 | Irrigation | ||
| Low | Not assessed | 36 | Fire Protection, Stock, Or Small Fish Pond | ||
| Low | Not assessed | 36 | Fire Protection, Stock, Or Small Fish Pond | ||
| Low | Not assessed | 35 | Fire Protection, Stock, Or Small Fish Pond | ||
| Low | Not assessed | 35 | Recreation | ||
| Low | Not assessed | 32 | Fire Protection, Stock, Or Small Fish Pond | ||
| Low | Not assessed | 32 | Fire Protection, Stock, Or Small Fish Pond | 1973 | |
| Davis Dam/watercrest Landing | Low | Not assessed | 32 | Fire Protection, Stock, Or Small Fish Pond | 1998 |
| Low | Not assessed | 31 | Fire Protection, Stock, Or Small Fish Pond | 1972 | |
| Low | Not assessed | 30 | 1977 | ||
| Low | Not assessed | 30 | 1974 | ||
| Low | Not assessed | 30 | 1968 | ||
| Low | Not assessed | 29 | 1971 | ||
| Low | Not assessed | 29 | Fire Protection, Stock, Or Small Fish Pond | ||
| Low | Not assessed | 28 | 1971 | ||
| Low | Not assessed | 28 | 1960 | ||
| Low | Not assessed | 28 | 1976 | ||
| Low | Not assessed | 28 | Fire Protection, Stock, Or Small Fish Pond | ||
| Low | Not assessed | 27 | 1960 | ||
| Low | Not assessed | 26 | 1974 | ||
| Ksnoname 4494 | Low | Not assessed | 26 | 1974 | |
| Low | Not assessed | 26 | Fire Protection, Stock, Or Small Fish Pond | ||
| Low | Not assessed | 25 | 1961 | ||
| Low | Not assessed | 25 | 1953 | ||
| Low | Not assessed | 25 | 1974 | ||
| Low | Not assessed | 25 | Fire Protection, Stock, Or Small Fish Pond | ||
| Woodland Road & College | Low | Not assessed | 25 | Recreation | 1954 |
| Low | Not assessed | 24 | Fire Protection, Stock, Or Small Fish Pond | ||
| Santa Fe Lake Dam (edgerton Lake Dam) | Low | Fair | 24 | Flood Risk Reduction | 2004 |
| Low | Not assessed | 23 | Fire Protection, Stock, Or Small Fish Pond | ||
| Harmon Dam | Low | Not assessed | 23 | Fire Protection, Stock, Or Small Fish Pond | 1964 |
| Low | Not assessed | 22 | 1962 | ||
| Kid's Lake | Low | Not assessed | 22 | Recreation | 2003 |
| Gibbens Dam | Low | Not assessed | 22 | Fire Protection, Stock, Or Small Fish Pond | |
| Low | Not assessed | 21 | 1969 | ||
| Low | Not assessed | 21 | 1960 | ||
| Private Dam | Low | Not assessed | 21 | Fire Protection, Stock, Or Small Fish Pond | 1996 |
| Low | Not assessed | 21 | Fire Protection, Stock, Or Small Fish Pond | 2003 | |
| Low | Not assessed | 20 | 1950 | ||
| Low | Not assessed | 20 | 1975 | ||
| Low | Not assessed | 20 | 1970 | ||
| Low | Not assessed | 20 | 1910 | ||
| Low | Not assessed | 20 | Fire Protection, Stock, Or Small Fish Pond | 1970 | |
| Kingston Lakes | Low | Not assessed | 20 | Recreation | 1989 |
| Gardner Celebration Park | Low | Not assessed | 20 | Recreation | 2008 |
| Rockwood Falls Estates | Low | Not assessed | 20 | Recreation | 2001 |
| Low | Not assessed | 19 | Fire Protection, Stock, Or Small Fish Pond | 1970 | |
| Low | Not assessed | 19 | Debris Control | 1976 | |
| Low | Not assessed | 18 | 1974 | ||
| Low | Not assessed | 18 | Fire Protection, Stock, Or Small Fish Pond | ||
| Heritage Park; Dam a | Low | Satisfactory | 18 | Irrigation | |
| Watson Lake Dam | Low | Not assessed | 18 | Recreation | 1986 |
| Low | Not assessed | 17 | 1974 | ||
| Low | Not assessed | 17 | 1960 | ||
| Dam C | Low | Not assessed | 17 | Irrigation | |
| Heritage Park; Dam C | Low | Satisfactory | 16 | Irrigation | |
| Heritage Park; Dam D | Low | Satisfactory | 16 | Irrigation | |
| Dam a | Low | Not assessed | 13 | Irrigation | |
| Walton Dam | Low | Not assessed | 12 | Recreation | 1991 |
| Undetermined | Not assessed | 50 | Debris Control | ||
| Undetermined | Not assessed | 24 |