Silver Jack Reservoir is located in the San Juan Mountains of Colorado and was established in 1957.
Wind
Humidity
The reservoir is fed by the snowpack from the surrounding mountains and provides water for irrigation, recreation, and domestic use. The hydrology of the reservoir is primarily determined by the drainage basin and precipitation patterns in the area. The surface flow providers include the Cow Creek and Dallas Creek, while the snowpack providers include the San Juan, Sneffels, and Cimarron Mountains. The reservoir is used for fishing, boating, camping, and hiking, making it a popular destination for outdoor enthusiasts. Additionally, it irrigates agricultural lands in the Uncompahgre Valley, supporting the local farming community.
| Storage 24hr Change | -0.22% |
| Percent of Normal | 41% |
| Minimum |
481.05 acre-ft
2025-09-29 |
| Maximum |
4,010,926.07 acre-ft
2022-01-15 |
| Average | 4,058 acre-ft |
| Nid_Height | 173 |
| Hydraulic_Height | 132 |
| Primary_Dam_Type | Earth |
| Drainage_Area | 59 |
| Year_Completed | 1971 |
| Dam_Height | 173 |
| Structural_Height | 173 |
| River_Or_Stream | EAST FORK, CIMARRON RIVER |
| Foundations | Rock |
| Surface_Area | 319 |
| Hazard_Potential | High |
| Outlet_Gates | Slide (sluice gate), Uncontrolled, Valve |
| Nid_Storage | 15363 |
| Dam_Length | 1050 |