Upper Midway
Upper Midway is a gravity dam located in Klamath County, Oregon, built in 1959. It carries a Low hazard potential classification.
About Upper Midway
The primary purpose of Upper Midway is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Doi Blm (federal). It impounds the Trib Lost River near Langell Valley.
The dam stands 13 feet tall and stretches 1,095 feet across, creates a reservoir covering 286 acres, and has a maximum storage capacity of 423 acre-feet. Completed in 1959, 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 09/15/2017.
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Location
| State | Oregon |
| County | Klamath |
| Nearest City | Langell Valley |
| River/Stream | Trib Lost River |
| Coordinates | 42.11507, -121.02621 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 13 ft |
| Dam Length | 1,095 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 423 acre-ft |
| Max Storage | 423 acre-ft |
| Normal Storage | 286 acre-ft |
| Surface Area | 286 acres |
| Max Discharge | 6,903 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | DOI BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 09/15/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00573 |
| Federal ID | OR00573 |
| More Info | State Dam Safety Program |