Standing at 66 feet in height and 248 feet in length, the dam has a storage capacity of 5000 acre-feet, with a maximum discharge of 15000 cubic feet per second. The spillway, controlled and 64 feet wide, ensures the safe release of excess water.
Despite its age, Easton Diversion remains a critical piece of infrastructure for water management in the region, with a high hazard potential due to its very high risk assessment rating. While the condition assessment is currently listed as not available, regular inspections by the Bureau of Reclamation help ensure the dam's integrity and safety. In the event of an emergency, an Emergency Action Plan (EAP) is in place, last revised in June 2020, although details on its guidelines and effectiveness are not provided.
Easton Diversion serves as a testament to the enduring legacy of water resource management in the Pacific Northwest, under the stewardship of the Bureau of Reclamation. Its strategic location and design play a crucial role in providing irrigation water to agricultural lands in the area. While the dam's age and hazard potential pose challenges, ongoing monitoring and risk management measures by the Bureau of Reclamation help ensure the safety and reliability of this vital infrastructure for the community.
Year Completed |
1929 |
Dam Length |
248 |
Dam Height |
66 |
River Or Stream |
YAKIMA RIVER |
Primary Dam Type |
Concrete |
Surface Area |
275 |
Hydraulic Height |
43 |
Drainage Area |
185 |
Nid Storage |
5000 |
Structural Height |
66 |
Hazard Potential |
High |
Foundations |
Rock |
Nid Height |
66 |
| Location | Reservations | Toilets |
|---|---|---|
Lake Easton State Park
|
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Ensign Ranch
|
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East Kachess Group Campground
|
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East Kachess Group Site
|
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Wish Poosh
|
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Wish Poosh Campground
|