Diablo Lake fish stocking
Whatcom County, Washington
Diablo Lake in Whatcom County, Washington was last stocked on October 27, 2025 with 249,364 rainbow trout fry from Marblemount Hatchery. Across the 4 years shown here, WDFW released 826,543 fish in 5 separate stockings. Stockings here are most common in October and November.
When Diablo Lake gets fish
Stocking history
Washington reports the exact release date.
2025 · 249,364 fish
| Date | Species | Fish | Size | Type |
|---|---|---|---|---|
| Rainbow Trout | 249,364 | — | Fry |
2024 · 134,588 fish
| Date | Species | Fish | Size | Type |
|---|---|---|---|---|
| Rainbow Trout | 134,588 | — | Fry |
2023 · 164,244 fish
| Date | Species | Fish | Size | Type |
|---|---|---|---|---|
| Rainbow Trout | 15,374 | — | Fry | |
| Rainbow Trout | 148,870 | — | Fry |
2022 · 278,347 fish
| Date | Species | Fish | Size | Type |
|---|---|---|---|---|
| Rainbow Trout | 278,347 | — | Fry |
Frequently asked questions
When was Diablo Lake last stocked?
WDFW records show Diablo Lake was last stocked on October 27, 2025 (about 11 months ago), with 249,364 rainbow trout fry.
What fish are stocked in Diablo Lake?
Diablo Lake has been stocked with rainbow trout in the years shown here (2022–2025).
When does Diablo Lake usually get stocked?
Most fish have been stocked in October and November. Exact dates change from year to year, so check back or see WDFW's official stocking page.
Do I need a license to fish Diablo Lake?
Yes, anglers generally need a valid Washington fishing license. Check the current Washington fishing regulations for seasons, limits and any special rules for Diablo Lake.
Other stocked waters in Whatcom County
Lost Hidden Lake
Fishtrap Creek
Lake Fazon
Whatcom Creek
Lake Whatcom
Lake Padden
All 29 stocked waters in Whatcom 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.