Lake Merwin

Lake Merwin is a reservoir on the Lewis River in the U.S. state of Washington. It lies on the border between Clark County and Cowlitz County. It was created in 1931 with the construction of Merwin Dam.^[2]

Lake Merwin
Aerial view of Lake Merwin
Lake Merwin Show map of Washington (state) Lake Merwin Show map of the United States
Location	Clark / Cowlitz counties, Washington
Coordinates	45°59′N 122°28′W[1]
Type	reservoir
Primary inflows	Lewis River
Primary outflows	Lewis River
Catchment area	731 square miles (1,890 km2)[2]
Basin countries	United States
Surface area	3,921 acres (15.9 km2)[2]
Max. depth	190 ft (58 m)[3]
Water volume	422,400 acre-feet (0.521 km3)[4]
Shore length1	32 mi (51 km)[3]
Surface elevation	236 ft (72 m)[1]
References	[1][2]
1 Shore length is not a well-defined measure.

See also

• List of lakes in Washington (state)
• List of dams in the Columbia River watershed