Larson
Larson is an earth dam located in Rio Blanco County, Colorado, built in 1888. It carries a Low hazard potential classification and has a fair condition assessment.
About Larson
The primary purpose of Larson is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Natural Soda, Inc. (daehling, Kirk) (private). It impounds the Piceance Cr-tr near Rio Blanco.
The dam stands 21 feet tall and stretches 66 feet across, creates a reservoir covering 4 acres, and has a maximum storage capacity of 74 acre-feet. Completed in 1888, 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 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 05/12/2020.
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Location
| State | Colorado |
| County | Rio Blanco |
| Nearest City | Rio Blanco |
| River/Stream | Piceance Cr-tr |
| Coordinates | 39.74256, -107.94441 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 66 ft |
| Year Completed | 1888 (138 years old) |
Storage & Hydraulics
| NID Storage | 74 acre-ft |
| Max Storage | 74 acre-ft |
| Normal Storage | 62 acre-ft |
| Surface Area | 4 acres |
| Max Discharge | 273 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | NATURAL SODA, INC. (DAEHLING, KIRK) |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 05/12/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO01932 |
| Federal ID | CO01932 |
| More Info | State Dam Safety Program |