Mack Mesa
Mack Mesa is an earth dam located in Mesa County, Colorado, built in 1952. It carries a Low hazard potential classification and has a fair condition assessment.
About Mack Mesa
The primary purpose of Mack Mesa is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Colorado Parks And Wildlife (state). It impounds the Mack Wash-tr near Mack.
The dam stands 36 feet tall and stretches 260 feet across, creates a reservoir covering 18 acres, and has a maximum storage capacity of 239 acre-feet. Completed in 1952, 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 10/28/2019.
At 36 feet, this dam is taller than 83% of dams nationwide.
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Location
| State | Colorado |
| County | Mesa |
| Nearest City | Mack |
| River/Stream | Mack Wash-tr |
| Coordinates | 39.28167, -108.84390 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 31 ft |
| Dam Length | 260 ft |
| Year Completed | 1952 (74 years old) |
Storage & Hydraulics
| NID Storage | 239 acre-ft |
| Max Storage | 239 acre-ft |
| Normal Storage | 131 acre-ft |
| Surface Area | 18 acres |
| Max Discharge | 80 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | COLORADO PARKS AND WILDLIFE |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 10/28/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO00873 |
| Federal ID | CO00873 |
| More Info | State Dam Safety Program |