Mattoon Lake fish stocking
Kittitas County, Washington
Mattoon Lake in Kittitas County, Washington was last stocked on May 11, 2026 with 3,240 rainbow trout from Naches Hatchery. Across the 5 years shown here, WDFW released 51,003 fish in 30 separate stockings. Stockings here are most common in March, April, and May.
When Mattoon Lake gets fish
Stocking history
Washington reports the exact release date. Sizes for Washington are estimated from the reported fish-per-pound.
2026 · 11,355 fish
| Date | Species | Fish | Size | Type |
|---|---|---|---|---|
| Rainbow Trout | 3,240 | 9.4″ | Catchable | |
| Rainbow Trout | 3,080 | 9.7″ | Catchable | |
| Rainbow Trout | 1,610 | 9.5″ | Catchable | |
| Rainbow Trout | 320 | 13.6″ | Catchable | |
| Rainbow Trout | 3,105 | 9.5″ | Catchable |
2025 · 11,293 fish
| Date | Species | Fish | Size | Type |
|---|---|---|---|---|
| Rainbow Trout | 48 | 27.1″ | Catchable | |
| Rainbow Trout | 102 | 21.5″ | Catchable | |
| Rainbow Trout | 3,000 | 9.4″ | Catchable | |
| Rainbow Trout | 3,013 | 9.5″ | Catchable | |
| Rainbow Trout | 1,840 | 9.5″ | Catchable | |
| Rainbow Trout | 300 | 13.6″ | Catchable | |
| Rainbow Trout | 2,990 | 9.5″ | Catchable |
2024 · 9,450 fish
| Date | Species | Fish | Size | Type |
|---|---|---|---|---|
| Rainbow Trout | 50 | 27.1″ | Catchable | |
| Rainbow Trout | 100 | 21.5″ | Catchable | |
| Rainbow Trout | 3,000 | 9.4″ | Catchable | |
| Rainbow Trout | 3,000 | 9.4″ | Catchable | |
| Rainbow Trout | 300 | 13.6″ | Catchable | |
| Rainbow Trout | 3,000 | 9.4″ | Catchable |
2023 · 9,450 fish
| Date | Species | Fish | Size | Type |
|---|---|---|---|---|
| Rainbow Trout | 117 | 21.5″ | Catchable | |
| Rainbow Trout | 33 | 27.1″ | Catchable | |
| Rainbow Trout | 3,000 | 9.4″ | Catchable | |
| Rainbow Trout | 3,000 | 9.4″ | Catchable | |
| Rainbow Trout | 300 | 13.6″ | Catchable | |
| Rainbow Trout | 3,000 | 9.4″ | Catchable |
2022 · 9,455 fish
| Date | Species | Fish | Size | Type |
|---|---|---|---|---|
| Rainbow Trout | 55 | 27.1″ | Catchable | |
| Rainbow Trout | 100 | 21.5″ | Catchable | |
| Rainbow Trout | 3,000 | 9.3″ | Catchable | |
| Rainbow Trout | 3,000 | 9.4″ | Catchable | |
| Rainbow Trout | 300 | 13.6″ | Catchable | |
| Rainbow Trout | 3,000 | 9.3″ | Catchable |
Frequently asked questions
When was Mattoon Lake last stocked?
WDFW records show Mattoon Lake was last stocked on May 11, 2026 (about 5 months ago), with 3,240 rainbow trout.
What fish are stocked in Mattoon Lake?
Mattoon Lake has been stocked with rainbow trout in the years shown here (2022–2026).
When does Mattoon Lake usually get stocked?
Most fish have been stocked in March, April, and May. Exact dates change from year to year, so check back or see WDFW's official stocking page.
Do I need a license to fish Mattoon Lake?
Yes, anglers generally need a valid Washington fishing license. Check the current Washington fishing regulations for seasons, limits and any special rules for Mattoon Lake.
Other stocked waters in Kittitas County
Middle Kendall Park Lake
Upper Kendall Park Lake
Kachess Lake
Taneum Lake
Mirror Lake
Thorp Lake
All 52 stocked waters in Kittitas County →
Source: WDFW Fish Plants (data.wa.gov). Stocked Lakes is not affiliated with Washington Department of Fish and Wildlife. Spot a problem? Let us know.