Hermosa Valley
Hermosa Valley is an earth dam located in Las Animas County, Colorado, built in 1922. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Hermosa Valley
The primary purpose of Hermosa Valley is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Roberts Bros. (tom Roberts) (private). It impounds the San Francisco Creek-tr near Trinchera.
The dam stands 46 feet tall and stretches 810 feet across, creates a reservoir covering 121 acres, and has a maximum storage capacity of 1,363 acre-feet. Completed in 1922, the structure is over a century 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 10/04/1990. That was over 35 years ago.
At 46 feet, this dam is taller than 91% of dams nationwide.
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Location
| State | Colorado |
| County | Las Animas |
| Nearest City | Trinchera |
| River/Stream | San Francisco Creek-tr |
| Coordinates | 37.11001, -104.26390 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 46 ft |
| Dam Height | 45 ft |
| Dam Length | 810 ft |
| Year Completed | 1922 (104 years old) |
Storage & Hydraulics
| NID Storage | 1,363 acre-ft |
| Max Storage | 1,363 acre-ft |
| Normal Storage | 1,000 acre-ft |
| Surface Area | 121 acres |
| Max Discharge | 1,289 cfs |
| Spillway Type | None |
Ownership & Safety
| Purpose | Irrigation |
| Owner | ROBERTS BROS. (TOM ROBERTS) |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/04/1990 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO00537 |
| Federal ID | CO00537 |
| More Info | State Dam Safety Program |