East Branch
East Branch is an earth dam located in Grand County, Colorado, built in 1971. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About East Branch
The primary purpose of East Branch 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 Freeport Mcmoran (hickman, Ron) (private). It impounds the Ute Creek-tr near Parshall.
The dam stands 150 feet tall and stretches 860 feet across, creates a reservoir covering 68 acres, has a maximum storage capacity of 2,986 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1971, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 09/13/2021.
At 150 feet, this dam is taller than 99% of all dams in the United States.
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Location
| State | Colorado |
| County | Grand |
| Nearest City | Parshall |
| River/Stream | Ute Creek-tr |
| Coordinates | 39.84334, -106.08223 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 150 ft |
| Dam Height | 120 ft |
| Dam Length | 860 ft |
| Year Completed | 1971 (55 years old) |
Storage & Hydraulics
| NID Storage | 2,986 acre-ft |
| Max Storage | 2,986 acre-ft |
| Normal Storage | 2,000 acre-ft |
| Surface Area | 68 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 550 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | FREEPORT MCMORAN (HICKMAN, RON) |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/13/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CO00708 |
| Federal ID | CO00708 |
| More Info | State Dam Safety Program |