Rock Lake fish stocking
Whitman County, Washington
Rock Lake in Whitman County, Washington was last stocked on October 5, 2026 with 41,790 brown trout fry from Spokane Hatchery. Across the 5 years shown here, WDFW released 2,082,957 fish in 85 separate stockings. Stockings here are most common in May, June, and October.
When Rock Lake gets fish
Stocking history
Washington reports the exact release date. Sizes for Washington are estimated from the reported fish-per-pound.
2026 · 299,863 fish
| Date | Species | Fish | Size | Type |
|---|---|---|---|---|
| Brown Trout | 41,790 | 4.6″ | Fry | |
| Rainbow Trout | 52,250 | 2.7″ | Fry | |
| Rainbow Trout | 49,400 | 2.7″ | Fry | |
| Rainbow Trout | 60,592 | 2.6″ | Fry | |
| Rainbow Trout | 64,581 | 2.8″ | Fry | |
| Rainbow Trout | 10,126 | 7.9″ | Catchable | |
| Rainbow Trout | 6,124 | 7.9″ | Catchable | |
| Brown Trout | 15,000 | 7.4″ | Catchable |
2025 · 400,998 fish
| Date | Species | Fish | Size | Type |
|---|---|---|---|---|
| Rainbow Trout | 7,500 | 8.7″ | Catchable | |
| Rainbow Trout | 21,560 | 5.8″ | Catchable | |
| Rainbow Trout | 7,650 | 8.7″ | Catchable | |
| Rainbow Trout | 12,160 | 8.5″ | Catchable | |
| Rainbow Trout | 9,136 | 5.8″ | Catchable | |
| Rainbow Trout | 10,877 | 5.8″ | Catchable | |
| Rainbow Trout | 15,933 | 4.8″ | Fry | |
| Brown Trout | 15,570 | 4.6″ | Fry | |
| Brown Trout | 4,430 | 4.6″ | Fry | |
| Brown Trout | 26,078 | 4.8″ | Fry | |
| Brown Trout | 42,712 | 4.8″ | Fry | |
| Rainbow Trout | 4 | 2″ | Fry | |
| Rainbow Trout | 35,181 | 2.7″ | Fry | |
| Rainbow Trout | 71,519 | 2.7″ | Fry | |
| Rainbow Trout | 56,280 | 2.7″ | Fry | |
| Rainbow Trout | 18,096 | 2.7″ | Fry | |
| Rainbow Trout | 31,906 | 2.7″ | Fry | |
| Brown Trout | 14,406 | 7.2″ | Catchable |
2024 · 434,959 fish
| Date | Species | Fish | Size | Type |
|---|---|---|---|---|
| Rainbow Trout | 4,238 | 6″ | Catchable | |
| Rainbow Trout | 12,447 | 6″ | Catchable | |
| Rainbow Trout | 13,500 | 8.7″ | Catchable | |
| Rainbow Trout | 10,561 | 8.5″ | Catchable | |
| Rainbow Trout | 3,720 | 8.7″ | Catchable | |
| Rainbow Trout | 8,724 | 5″ | Fry | |
| Rainbow Trout | 3,726 | 5.3″ | Fry | |
| Rainbow Trout | 12,200 | 5.8″ | Catchable | |
| Rainbow Trout | 7,812 | 5.8″ | Catchable | |
| Rainbow Trout | 11,978 | 5.3″ | Fry | |
| Brown Trout | 7,310 | 4.9″ | Fry | |
| Rainbow Trout | 8,140 | 5.8″ | Catchable | |
| Rainbow Trout | 15,240 | 5.8″ | Catchable | |
| Rainbow Trout | 76,000 | 2.7″ | Fry | |
| Rainbow Trout | 28,600 | 2.7″ | Fry | |
| Rainbow Trout | 70,096 | 2.7″ | Fry | |
| Rainbow Trout | 42,500 | 2.7″ | Fry | |
| Rainbow Trout | 72,360 | 2.7″ | Fry | |
| Rainbow Trout | 4,385 | 8.1″ | Catchable | |
| Rainbow Trout | 421 | 2″ | Fry | |
| Rainbow Trout | 100 | — | Fry | |
| Brown Trout | 15,125 | 7.4″ | Catchable | |
| Rainbow Trout | 2,746 | 7.9″ | Catchable | |
| Rainbow Trout | 3,030 | 7.9″ | Catchable |
2023 · 333,617 fish
| Date | Species | Fish | Size | Type |
|---|---|---|---|---|
| Rainbow Trout | 13,950 | 5.8″ | Catchable | |
| Rainbow Trout | 1,360 | 8.5″ | Catchable | |
| Rainbow Trout | 10,560 | 8.5″ | Catchable | |
| Rainbow Trout | 12,705 | 8.5″ | Catchable | |
| Rainbow Trout | 2,400 | 8.5″ | Catchable | |
| Rainbow Trout | 14,933 | 5.7″ | Fry | |
| Brown Trout | 66,130 | 4.6″ | Fry | |
| Rainbow Trout | 48,000 | 2.8″ | Fry | |
| Rainbow Trout | 16,000 | 2.7″ | Fry | |
| Rainbow Trout | 81,315 | 2.7″ | Fry | |
| Rainbow Trout | 37,760 | 2.7″ | Fry | |
| Brown Trout | 5,280 | 7.7″ | Catchable | |
| Brown Trout | 8,924 | 7.6″ | Catchable | |
| Rainbow Trout | 14,300 | 7.9″ | Catchable |
2022 · 613,520 fish
| Date | Species | Fish | Size | Type |
|---|---|---|---|---|
| Rainbow Trout | 3,840 | 8.5″ | Catchable | |
| Rainbow Trout | 10,463 | 5.7″ | Fry | |
| Rainbow Trout | 3,968 | 8.5″ | Catchable | |
| Rainbow Trout | 10,230 | 8.6″ | Catchable | |
| Rainbow Trout | 9,240 | 8.9″ | Catchable | |
| Rainbow Trout | 17,430 | 4.9″ | Fry | |
| Rainbow Trout | 10,560 | 4.5″ | Fry | |
| Rainbow Trout | 22,631 | 5.8″ | Catchable | |
| Brown Trout | 23,780 | 4.6″ | Fry | |
| Brown Trout | 10,340 | 4.6″ | Fry | |
| Brown Trout | 9,669 | 4.8″ | Fry | |
| Brown Trout | 56,379 | 4.8″ | Fry | |
| Rainbow Trout | 182,160 | 2.7″ | Fry | |
| Rainbow Trout | 90,500 | 2.7″ | Fry | |
| Rainbow Trout | 90,608 | 2.6″ | Fry | |
| Rainbow Trout | 31,110 | 2.7″ | Fry | |
| Rainbow Trout | 2,001 | 6.9″ | Catchable | |
| Rainbow Trout | 2,304 | 6.6″ | Catchable | |
| Rainbow Trout | 12,087 | 6.6″ | Catchable | |
| Brown Trout | 3,630 | 7.4″ | Catchable | |
| Brown Trout | 10,590 | 7.4″ | Catchable |
Frequently asked questions
When was Rock Lake last stocked?
WDFW records show Rock Lake was last stocked on October 5, 2026 (2 days ago), with 41,790 brown trout fry.
What fish are stocked in Rock Lake?
Rock Lake has been stocked with brown trout and rainbow trout in the years shown here (2022–2026).
When does Rock Lake usually get stocked?
Most fish have been stocked in May, June, and October. Exact dates change from year to year, so check back or see WDFW's official stocking page.
Do I need a license to fish Rock Lake?
Yes, anglers generally need a valid Washington fishing license. Check the current Washington fishing regulations for seasons, limits and any special rules for Rock Lake.
Other stocked waters in Whitman County
Garfield Pond
Gilcrest Pond
Union Flat Creek
Pampa Pond
Riparia Pond
All 6 stocked waters in Whitman 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.