Mattoon Lake trout stocking
Kittitas County, Washington · lake
Mattoon Lake was last stocked 6 months ago (May 11, 2026). We have 47 stockings on record since Nov 18, 2016, 4 in the last 12 months (11,355 fish). Most stockings come in March. Species stocked: rainbow trout.
Last stocked
6 months ago
May 11, 2026
Next planned
Not announced
Last 12 months
4 stockings
11,355 fish
On record
47 stockings
since Nov 18, 2016
- The second most stocked of 58 waters in Kittitas County.
- Stocked more often than 93% of Washington waters on our record.
When is Mattoon Lake stocked?
Most stockings come in March. Stocked 4 times in 2026, mostly in March, usually on Mondays, about every 20 days.
By month, all years
Year by year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 1 | 2 | 1 | |||||||||
| 2025 | 2 | 1 | 1 | 1 | ||||||||
| 2024 | 3 | 1 | 1 | |||||||||
| 2023 | 2 | 1 | 1 | 1 | ||||||||
| 2022 | 3 | 1 | 1 | |||||||||
| 2021 | 3 | 1 | 1 | |||||||||
| 2020 | 1 | 1 | 1 | 1 | ||||||||
| 2019 | 2 | 1 | 1 |
What is stocked
| Species | Stockings | Fish | Fish per stocking |
|---|---|---|---|
| Rainbow trout | 47 | 96,682 | 2,057 |
Stocking history
20264 stockings · 11,355 fish
| Date | Species | Fish | Since previous | Hatchery |
|---|---|---|---|---|
May 11Latest Monday | Rainbow trout | 3,240 1,350 lb | 47 days | Naches Hatchery |
Mar 25 Wednesday | Rainbow trout | 3,080 1,400 lb | 9 days | Naches Hatchery |
Mar 16 Monday | Rainbow trout | 1,610 700 lb | 20 days | Naches Hatchery |
Feb 24 Tuesday | Rainbow trout | 3,425 1,750 lb | 116 days | Naches Hatchery |
20255 stockings · 11,293 fish
| Date | Species | Fish | Since previous | Hatchery |
|---|---|---|---|---|
Oct 31 Friday | Rainbow trout | 150 990 lb | 171 days | Goldendale Hatchery |
May 13 Tuesday | Rainbow trout | 3,000 1,250 lb | 6 weeks | Naches Hatchery |
Apr 1 Tuesday | Rainbow trout | 3,013 1,310 lb | 2 weeks | Naches Hatchery |
Mar 18 Tuesday | Rainbow trout | 1,840 800 lb | 15 days | Naches Hatchery |
Mar 3 Monday | Rainbow trout | 3,290 1,675 lb | 15 weeks | Naches Hatchery |
20245 stockings · 9,450 fish
| Date | Species | Fish | Since previous | Hatchery |
|---|---|---|---|---|
Nov 18 Monday | Rainbow trout | 150 1,000 lb | 188 days | Goldendale Hatchery |
May 14 Tuesday | Rainbow trout | 3,000 1,250 lb | 57 days | Naches Hatchery |
Mar 18 Monday | Rainbow trout | 3,000 1,250 lb | 13 days | Naches Hatchery |
Mar 5 Tuesday | Rainbow trout | 300 375 lb | 1 day | Naches Hatchery |
Mar 4 Monday | Rainbow trout | 3,000 1,250 lb | 129 days | Naches Hatchery |
20235 stockings · 9,450 fish
- Oct 27 rainbow trout, 150 fish
- May 16 rainbow trout, 3,000 fish
- Apr 5 rainbow trout, 3,000 fish
- Mar 8 rainbow trout, 300 fish
- Mar 7 rainbow trout, 3,000 fish
20225 stockings · 9,455 fish
- Dec 1 rainbow trout, 155 fish
- May 17 rainbow trout, 3,000 fish
- Mar 21 rainbow trout, 3,000 fish
- Mar 9 rainbow trout, 300 fish
- Mar 7 rainbow trout, 3,000 fish
20215 stockings · 8,886 fish
- Dec 8 rainbow trout, 150 fish
- May 17 rainbow trout, 3,000 fish
- Mar 29 rainbow trout, 3,036 fish
- Mar 10 rainbow trout, 300 fish
- Mar 9 rainbow trout, 2,400 fish
20204 stockings · 8,937 fish
- Dec 2 rainbow trout, 175 fish
- May 18 rainbow trout, 3,000 fish
- Mar 31 rainbow trout, 3,025 fish
- Feb 26 rainbow trout, 2,737 fish
20194 stockings · 8,875 fish
- Nov 13 rainbow trout, 175 fish
- May 13 rainbow trout, 3,000 fish
- Mar 25 rainbow trout, 3,000 fish
- Mar 5 rainbow trout, 2,700 fish
20184 stockings · 9,475 fish
- Nov 7 rainbow trout, 175 fish
- May 14 rainbow trout, 3,500 fish
- Apr 9 rainbow trout, 3,000 fish
- Mar 5 rainbow trout, 2,800 fish
20175 stockings · 9,391 fish
- Nov 1 rainbow trout, 175 fish
- May 16 rainbow trout, 3,480 fish
- Apr 11 rainbow trout, 3,000 fish
- Apr 5 rainbow trout, 228 fish
- Mar 13 rainbow trout, 2,508 fish
20161 stocking · 115 fish
- Nov 18 rainbow trout, 115 fish
From Washington fish and wildlife agency reports, collected nightly and kept after the agency takes them down. Agencies revise reports; check the agency's report before you go. Seasons and limits: Washington fishing regulations.
Other stocked waters in Kittitas County
- Lavendar Lakelakestocked Oct 16, 2026
- Kendall Park Lake Middlelakestocked Sep 21, 2026
- Kendall Park Lake Upperlakestocked Sep 21, 2026
- Kachess Lakelakestocked Sep 4, 2026
- Taneum Lakelakestocked Aug 29, 2026
- Mirror Lakelakestocked Aug 28, 2026
- Thorp Lakelakestocked Aug 3, 2026
- Twin Lakes Upperlakestocked Aug 3, 2026
All stocked waters in Kittitas CountyStocked this week in Washington
Questions about Mattoon Lake
- When was Mattoon Lake last stocked?
- The latest reported stocking was May 11, 2026 (rainbow trout, 3,240 fish), according to Washington agency reports.
- How often is Mattoon Lake stocked?
- Stocked 4 times in 2026, mostly in March, usually on Mondays, about every 20 days. Across all years on record, most stockings come in March.
- Is Mattoon Lake stocked often?
- The second most stocked of 58 waters in Kittitas County. Stocked more often than 93% of Washington waters on our record. We count each day the agency reported stocking it.
- What kind of trout are stocked in Mattoon Lake?
- Rainbow trout (47 stockings, 96,682 fish).