Six & Fifty Detention Dam is a gravity dam located in Mesa County, Colorado, built in 1957. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 489 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Six & Fifty Detention Dam
The primary purpose of Six & Fifty Detention Dam is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by Doi BLM (federal). It impounds the Tributary of West Salt Creek.
The dam stands 20 feet tall and stretches 489 feet across, creates a reservoir covering 159 acres, and has a maximum storage capacity of 201 acre-feet. Completed in 1957, 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 05/05/2011. That was over 15 years ago.
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Location
| State | Colorado |
| County | Mesa |
| Nearest City | None |
| River/Stream | Tributary of West Salt Creek |
| Coordinates | 39.24481, -108.94803 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 20 ft |
| Dam Length | 489 ft |
| Year Completed | 1957 (69 years old) |
Storage & Hydraulics
| NID Storage | 201 acre-ft |
| Max Storage | 201 acre-ft |
| Normal Storage | 201 acre-ft |
| Surface Area | 159 acres |
Ownership & Safety
| Purpose | Debris Control |
| Owner | Doi BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/05/2011 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO01257 |
| Federal ID | CO01257 |
| More Info | State Dam Safety Program |