22Total Dams
8High Hazard
3Significant
Dam Safety in Arapahoe County, Colorado
Arapahoe County has 22 dams tracked in the National Inventory of Dams. Of these, 8 are classified as high hazard — meaning failure would probably cause loss of human life. Another 3 carry a significant hazard classification. Currently, 1 dam has a condition assessment of poor or unsatisfactory.
The average dam in Arapahoe County is 56 years old. The most common purpose is flood risk reduction. The tallest dam is Cherry Creek Dam at 189 ft.
Explore more: Oldest dams in Colorado · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Cherry Creek Dam | High | Not assessed | 189 | Flood Risk Reduction | 1953 |
| Senac | High | Satisfactory | 163 | Water Supply | 1990 |
| Mc Lellan | High | Fair | 125 | Water Supply | 1964 |
| South Platte Reservoir | High | Satisfactory | 83 | Water Supply | 2007 |
| Quincy | High | Satisfactory | 73 | Water Supply | 1974 |
| Englewood | High | Not assessed | 64 | Flood Risk Reduction | 1936 |
| Holly | High | Not assessed | 45 | Flood Risk Reduction | 1979 |
| Exposition Park | High | Satisfactory | 19 | Flood Risk Reduction | 2002 |
| Belisle | Significant | Fair | 40 | Water Supply | 1953 |
| Arapahoe Lake | Significant | Satisfactory | 23 | Recreation | 1974 |
| Upper Tule Lake | Significant | Satisfactory | 11 | Recreation | 1892 |
| Noonen | Low | Satisfactory | 42 | Irrigation | 1907 |
| Southshore Senac Creek 1 | Low | Not assessed | 40 | Flood Risk Reduction | 2005 |
| Inverness | Low | Not assessed | 35 | Water Supply | 1973 |
| Buckley Dam | Low | Satisfactory | 33 | Recreation | 1960 |
| Rock Canyon E.c. #1 | Low | Unsatisfactory | 26 | Flood Risk Reduction | 1971 |
| Rock Canyon E.c. #2 | Low | Not assessed | 25 | Flood Risk Reduction | 1973 |
| Jewell Wetland Detention | Low | Not assessed | 21 | Flood Risk Reduction | 2000 |
| Jolly Ranch | Low | Fair | 20 | Fire Protection, Stock, Or Small Fish Pond | 1987 |
| Lowry Ridge Storage | Low | Satisfactory | 13 | 2018 | |
| Blackmer #1 | Low | Satisfactory | 12 | Irrigation | 1936 |
| Patrick Lake | Low | Not assessed | 10 | Irrigation | 1969 |