Long Slough
Long Slough is an earth dam located in Mesa County, Colorado, built in 1912. It carries a Low hazard potential classification.
About Long Slough
The primary purpose of Long Slough is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Ute Water Conservancy District (private). It impounds the Spring Creek near Grand Junction.
The dam stands 11 feet tall and stretches 405 feet across, creates a reservoir covering 46 acres, and has a maximum storage capacity of 350 acre-feet. Completed in 1912, 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. The most recent inspection on record was 07/30/2019.
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Location
| State | Colorado |
| County | Mesa |
| Nearest City | Grand Junction |
| River/Stream | Spring Creek |
| Coordinates | 39.07549, -108.05696 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 405 ft |
| Year Completed | 1912 (114 years old) |
Storage & Hydraulics
| NID Storage | 350 acre-ft |
| Max Storage | 350 acre-ft |
| Normal Storage | 201 acre-ft |
| Surface Area | 46 acres |
| Max Discharge | 350 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | UTE WATER CONSERVANCY DISTRICT |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 07/30/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO01963 |
| Federal ID | CO01963 |
| More Info | State Dam Safety Program |