Martha Lake (Warm Beach) (58 acres): Located 10 miles northwest of Marysville, this Martha Lake has a state access with toilet on the north shore and a resort on the south shore. Primary species are rainbow and cutthroat trout.

Lake Martha is located in the Seven Lakes area north of the Tulalip Reservation. The lake is 59 acres in size and one of the deepest lakes in the county, with a maximum depth of 21.3 meters. Lake Martha’s immediate watershed is large at 801 acres and is primarily undeveloped. There is a public boat launch on the north side of the lake. Gas-powered boats are not permitted on the lake.
Snohomish Water Management Division