Upper Clark Reservoir is a gravity dam located in Malheur County, Oregon, built in 2004. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 240 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Upper Clark Reservoir
The primary purpose of Upper Clark Reservoir 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 Doi BLM (federal).
The dam stands 12 feet tall and stretches 240 feet across, creates a reservoir covering 56 acres, and has a maximum storage capacity of 280 acre-feet. Completed in 2004, the structure is relatively new.
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 09/18/2018.
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Location
| State | Oregon |
| County | Malheur |
| Coordinates | 43.15842, -117.75619 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 12 ft |
| Dam Length | 240 ft |
| Year Completed | 2004 (22 years old) |
Storage & Hydraulics
| NID Storage | 280 acre-ft |
| Max Storage | 280 acre-ft |
| Normal Storage | 61 acre-ft |
| Surface Area | 56 acres |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Doi BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 09/18/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00094 |
| Federal ID | OR00094 |
| More Info | State Dam Safety Program |