Cob Creek Dam is an earth dam located in Malheur County, Oregon, built in 1962. It carries a Low hazard potential classification.
Dam profile
NID height · 31 ft31 ft tall and 1,000 ft long, taller than 72% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Cob Creek Dam
The primary purpose of Cob Creek Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Oregon Land Co Z, LLC, C/o Laramie Dawson Corp (private). It impounds the Visher & Cob Creeks, Trib South Fork Malheur near Juntura.
The dam stands 31 feet tall and stretches 1,000 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 128 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1962, the structure is well into its service life at over 50 years 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 10/08/2014. That was over 12 years ago.
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Location
| State | Oregon |
| County | Malheur |
| Nearest City | Juntura |
| River/Stream | Visher & Cob Creeks, Trib South Fork Malheur |
| Coordinates | 43.43436, -118.20410 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 29 ft |
| Dam Length | 1,000 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 128 acre-ft |
| Max Storage | 128 acre-ft |
| Normal Storage | 128 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 500 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Oregon Land Co Z, LLC, C/o Laramie Dawson Corp |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/08/2014 |
| Emergency Action Plan | No |
Identifiers
| NID ID | OR00383 |
| Federal ID | OR00383 |
| More Info | State Dam Safety Program |