Upper Dome is an earth dam located in Saguache County, Colorado, built in 1975. It carries a Low hazard potential classification.
Dam profile
NID height · 50 ft50 ft tall and 540 ft long, taller than 92% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Upper Dome
The primary purpose of Upper Dome is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Colorado Parks and Wildlife (state). It impounds the Cochtopa Creek-tr near Gunnison.
The dam stands 50 feet tall and stretches 540 feet across, creates a reservoir covering 75 acres, has a maximum storage capacity of 1,330 acre-feet, and collects water from a drainage area of 60 square miles. Completed in 1975, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 08/07/2019.
At 50 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | Colorado |
| County | Saguache |
| Nearest City | Gunnison |
| River/Stream | Cochtopa Creek-tr |
| Coordinates | 38.20220, -106.73356 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 50 ft |
| Dam Height | 33 ft |
| Dam Length | 540 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 1,330 acre-ft |
| Max Storage | 1,330 acre-ft |
| Normal Storage | 880 acre-ft |
| Surface Area | 75 acres |
| Drainage Area | 60 sq mi |
| Max Discharge | 850 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Colorado Parks and Wildlife |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 08/07/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO00799 |
| Federal ID | CO00799 |
| More Info | State Dam Safety Program |