Wind
Humidity
Located in Prosser, Washington, the Sunnyside Mp 59.29 Reservoir is a vital water resource managed by the Washington Dept of Ecology.
Built in 2005 by CH2MHill, this earth dam reservoir serves primarily for irrigation purposes, with a storage capacity of 400 acre-feet. The reservoir covers an area of 21 acres and has a drainage area of 0.03 square miles, drawing water from the Spring Cr Wasteway - Offstream.
With a structural height of 41 feet and a hydraulic height of 44 feet, the Sunnyside Mp 59.29 Reservoir has a high hazard potential but is currently assessed to be in fair condition. The reservoir undergoes inspections every 5 years, with the last assessment conducted in October 2021. Despite its age, the dam continues to meet regulatory standards and serves as a critical component of the region's water management infrastructure, ensuring a reliable water supply for agricultural purposes in Benton County, Washington.
Yakima River At Kiona
|
2360cfs |
Yakima River At Mabton
|
4700cfs |
Granger Drain At Granger
|
40cfs |
Columbia River Below Priest Rapids Dam
|
171000cfs |
Umatilla River Near Umatilla
|
375cfs |
Crab Creek Near Beverly
|
212cfs |
Year Completed |
2005 |
Dam Length |
3800 |
River Or Stream |
Spring Cr Wasteway - Offstream |
Primary Dam Type |
Earth |
Surface Area |
21 |
Hydraulic Height |
44 |
Drainage Area |
0.03 |
Nid Storage |
400 |
Structural Height |
41 |
Hazard Potential |
High |
Foundations |
Rock, Soil |
Nid Height |
44 |
| Location | Reservations | Toilets |
|---|---|---|
Horn Rapids County Park
|
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Columbia Park
|
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Plymouth Park
|
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Ringold Springs - WDFW
|
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Umatilla Marina RV Park
|