SNOFLO


WYNOOCHEE

RESERVOIR LEVELS
Rock Dam Wynoochee River
May 11, 2025


56°F

This Afternoon

40°F

Tonight

1mph

Windspeed

85%

Humidity

Wynoochee, a gravity dam located in Grays Harbor, Washington, is a key water resource and climate infrastructure owned by the local government. Built in 1972 by the U.S. Army Corps of Engineers, this dam serves multiple important purposes including water supply, flood risk reduction, hydroelectric power generation, recreation, and fish and wildlife habitat enhancement. With a maximum storage capacity of 76,000 acre-feet and a normal storage capacity of 69,405 acre-feet, Wynoochee plays a crucial role in managing water resources in the region.

The dam, standing at a height of 175 feet and stretching 1,700 feet in length, has a controlled spillway with a width of 64 feet. The structure is designed to withstand high hazard potential and is regularly inspected by the Federal Energy Regulatory Commission to ensure its safety and functionality. Despite its age, Wynoochee remains a vital component of the local water supply infrastructure, providing essential services to the surrounding community while also supporting ecological and recreational activities along the Wynoochee River.

As climate change continues to impact water resources and infrastructure across the country, the role of dams like Wynoochee in managing water supply, flood risks, and ecosystem health becomes increasingly critical. With its strategic location and multifaceted benefits, Wynoochee stands as a testament to the importance of sustainable water resource management in the face of a changing climate.

Year_Completed 1972
Dam_Height 175
River_Or_Stream Wynoochee River
Dam_Length 1700
Primary_Dam_Type Gravity
Surface_Area 1126
Hydraulic_Height 170
Drainage_Area 41
Nid_Storage 76000
Structural_Height 175
Outlet_Gates Slide (sluice gate) - 2, Tainter (radial) - 2
Hazard_Potential High
Foundations Rock
Nid_Height 175
       

Weather Forecast

Created with Highcharts 8.0.0humidity0.76"0.76"0.08"0.08"0.06"0.06"0.26"0.26"0.43"0.43"0.04"0.04"0.09"0.09"0.29"0.29"0.19"0.19"0.15"0.15"0.37"0.37"0.29"0.29"0.82"0.82"0.88"0.88"0.98"0.98"Mon May 12Tue May 13Wed May 14Thu May 15Fri May 1632°64°96°40%80%120%160%