ReelTourney

Mattoon Lake Fishing and Stocking

Kittitas County, Washington. The Washington Department of Fish and Wildlife lists 7 stockings here in the latest year of its data (Rainbow Trout), the most recent on May 11, 2026. Stocked in March and May in two or more years.

2026 Stocking

DateSpeciesFishSize
May 11, 2026Rainbow Trout3,240Legals, 2.4 fish per pound
Mar 25, 2026Rainbow Trout3,080Legals, 2.2 fish per pound
Mar 16, 2026Rainbow Trout1,610Legals, 2.3 fish per pound
Feb 24, 2026Rainbow Trout320Legals, 0.8 fish per pound
Feb 24, 2026Rainbow Trout3,105Legals, 2.3 fish per pound

2025 Stocking

DateSpeciesFishSize
Oct 31, 2025Rainbow Trout48Legals, 0.1 fish per pound
Oct 31, 2025Rainbow Trout102Legals, 0.2 fish per pound
May 13, 2025Rainbow Trout3,000Legals, 2.4 fish per pound
Apr 1, 2025Rainbow Trout3,013Legals, 2.3 fish per pound
Mar 18, 2025Rainbow Trout1,840Legals, 2.3 fish per pound
Mar 3, 2025Rainbow Trout300Legals, 0.8 fish per pound
Mar 3, 2025Rainbow Trout2,990Legals, 2.3 fish per pound

2024 Stocking

DateSpeciesFishSize
Nov 18, 2024Rainbow Trout100Legals, 0.2 fish per pound
Nov 18, 2024Rainbow Trout50Legals, 0.1 fish per pound
May 14, 2024Rainbow Trout3,000Legals, 2.4 fish per pound
Mar 18, 2024Rainbow Trout3,000Legals, 2.4 fish per pound
Mar 5, 2024Rainbow Trout300Legals, 0.8 fish per pound
Mar 4, 2024Rainbow Trout3,000Legals, 2.4 fish per pound

Other Stocked Waters in Kittitas County

About This Data

Every row comes from the stocking information published by the Washington Department of Fish and Wildlife, checked Nov 3, 2026. The agency lists this water as “MATTOON LK (KITT)”. Species and sizes are given as the agency names them; a dash means the agency does not say.

More for Washington Anglers

Stocking dates and places can change without notice; check with the agency before a trip. ReelTourney is not affiliated with the Washington Department of Fish and Wildlife.