804 Reservoir Dam
804 Reservoir Dam is an earth dam located in Franklin County, Washington, built in 1979. It carries a Low hazard potential classification.
About 804 Reservoir Dam
The primary purpose of 804 Reservoir Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Wa Dfw (state). It impounds the Offstream near Mesa.
The dam stands 12 feet tall and stretches 150 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 160 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1979, the structure is 47 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.
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Location
| State | Washington |
| County | Franklin |
| Nearest City | Mesa |
| River/Stream | Offstream |
| Coordinates | 46.57076, -119.01104 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Length | 150 ft |
| Year Completed | 1979 (47 years old) |
Storage & Hydraulics
| NID Storage | 160 acre-ft |
| Max Storage | 160 acre-ft |
| Normal Storage | 90 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 50 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | WA DFW |
| Owner Type | State |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA00413 |
| Federal ID | WA00413 |
| More Info | State Dam Safety Program |