Osborne Lakes trout stocking
Mason County, Washington · lake
Osborne Lakes was last stocked 5 weeks ago (Oct 5, 2026). We have 25 stockings on record since Oct 12, 2016, 2 in the last 12 months (610 fish). Most stockings come in April and October. Species stocked: rainbow trout, cutthroat trout.
Last stocked
5 weeks ago
Oct 5, 2026
Next planned
Not announced
Last 12 months
2 stockings
610 fish
On record
25 stockings
since Oct 12, 2016
- Number 19 of 55 stocked waters in Mason County by stocking days.
- Stocked more often than 85% of Washington waters on our record.
When is Osborne Lakes stocked?
Most stockings come in April and October. Stocked 3 times in 2025, usually on Wednesdays, about every 168 days.
By month, all years
Year by year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 1 | 1 | ||||||||||
| 2025 | 1 | 1 | 1 | |||||||||
| 2024 | 1 | 1 | ||||||||||
| 2023 | 1 | 1 | 1 | |||||||||
| 2022 | 1 | 1 | ||||||||||
| 2021 | 1 | 1 | ||||||||||
| 2020 | 1 | 1 | ||||||||||
| 2019 | 1 | 2 |
What is stocked
| Species | Stockings | Fish | Fish per stocking |
|---|---|---|---|
| Rainbow trout | 19 | 4,274 | 225 |
| Cutthroat trout | 10 | 2,676 | 268 |
Stocking history
20262 stockings · 610 fish
| Date | Species | Fish | Since previous | Hatchery |
|---|---|---|---|---|
Oct 5Latest Monday · 5 weeks ago | Cutthroat troutRainbow trout | 450 30 lb | 179 days | Eells Springs |
Apr 9 Thursday | Rainbow trout | 160 64 lb | 176 days | Eells Springs |
20253 stockings · 680 fish
| Date | Species | Fish | Since previous | Hatchery |
|---|---|---|---|---|
Oct 15 Wednesday | Rainbow trout | 280 17 lb | 4 weeks | Eells Springs |
Sep 17 Wednesday | Cutthroat trout | 200 7 lb | 24 weeks | Eells Springs |
Apr 2 Wednesday | Rainbow trout | 200 93 lb | 183 days | Eells Springs |
20242 stockings · 640 fish
| Date | Species | Fish | Since previous | Hatchery |
|---|---|---|---|---|
Oct 1 Tuesday | Cutthroat troutRainbow trout | 440 29 lb | 181 days | Eells Springs |
Apr 3 Wednesday | Rainbow trout | 200 85 lb | 177 days | Eells Springs |
20233 stockings · 640 fish
- Oct 9 rainbow trout, 240 fish
- Sep 28 cutthroat trout, 200 fish
- Apr 5 rainbow trout, 200 fish
20222 stockings · 680 fish
- Oct 5 cutthroat trout, rainbow trout, 480 fish
- Mar 29 rainbow trout, 200 fish
20212 stockings · 700 fish
- Oct 5 cutthroat trout, rainbow trout, 440 fish
- Apr 2 rainbow trout, 260 fish
20202 stockings · 480 fish
- Oct 14 rainbow trout, 250 fish
- May 1 rainbow trout, 230 fish
20193 stockings · 640 fish
- Sep 25 rainbow trout, 240 fish
- Sep 24 cutthroat trout, 200 fish
- Apr 4 rainbow trout, 200 fish
20183 stockings · 640 fish
- Oct 12 rainbow trout, 240 fish
- Oct 10 cutthroat trout, 200 fish
- Apr 3 rainbow trout, 200 fish
20172 stockings · 440 fish
- Oct 9 cutthroat trout, 240 fish
- Apr 4 rainbow trout, 200 fish
20161 stocking · 800 fish
- Oct 12 cutthroat trout, 800 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 Mason County
- Lost Lakelakestocked Oct 9, 2026
- Spencer Lakelakestocked Oct 9, 2026
- Benson Lakelakestocked Oct 7, 2026
- Cady Lakelakestocked Oct 7, 2026
- Devereaux Lakelakestocked Oct 7, 2026
- Aldrich Lakelakestocked Oct 6, 2026
- Clara Lakelakestocked Oct 6, 2026
- Howell Lakelakestocked Oct 6, 2026
All stocked waters in Mason CountyStocked this week in Washington
Questions about Osborne Lakes
- When was Osborne Lakes last stocked?
- The latest reported stocking was Oct 5, 2026 (cutthroat trout and rainbow trout, 450 fish), according to Washington agency reports.
- How often is Osborne Lakes stocked?
- Stocked 3 times in 2025, usually on Wednesdays, about every 168 days. Across all years on record, most stockings come in April and October.
- Is Osborne Lakes stocked often?
- Number 19 of 55 stocked waters in Mason County by stocking days. Stocked more often than 85% of Washington waters on our record. We count each day the agency reported stocking it.
- What kind of trout are stocked in Osborne Lakes?
- Rainbow trout (19 stockings, 4,274 fish); Cutthroat trout (10 stockings, 2,676 fish).