Lost Canyon is an earth dam located in Montezuma County, Colorado, built in 1965. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 28 ft28 ft tall and 225 ft long, taller than 62% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Lost Canyon
The primary purpose of Lost Canyon is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Louis Garon (private). It impounds the Lost Canyon-tr near Dolores.
The dam stands 28 feet tall and stretches 225 feet across, creates a reservoir covering 20 acres, and has a maximum storage capacity of 260 acre-feet. Completed in 1965, 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 10/20/2010. That was over 15 years ago.
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Location
| State | Colorado |
| County | Montezuma |
| Nearest City | Dolores |
| River/Stream | Lost Canyon-tr |
| Coordinates | 37.43475, -108.40567 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 25 ft |
| Dam Length | 225 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 260 acre-ft |
| Max Storage | 260 acre-ft |
| Normal Storage | 130 acre-ft |
| Surface Area | 20 acres |
| Max Discharge | 882 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Louis Garon |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 10/20/2010 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO01088 |
| Federal ID | CO01088 |
| More Info | State Dam Safety Program |