Rock Lake trout stocking
Whitman County, Washington · lake · about 1,727 ft elevation
Rock Lake was last stocked 5 days ago (Nov 4, 2026). We have 122 stockings on record since Oct 3, 2016, 11 in the last 12 months (387,457 fish). Most stockings come in October. Species stocked: rainbow trout, brown trout.
Last stocked
5 days ago
Nov 4, 2026
Next planned
Not announced
Last 12 months
11 stockings
387,457 fish
On record
122 stockings
since Oct 3, 2016
- The most stocked water in Whitman County (122 stocking days on record).
- Stocked more often than 99% of Washington waters on our record.
Weather at Rock Lake
- Tonight40°FMostly Cloudy9% rain · wind 3 mph
- Monday55°FMostly Cloudy then Light Rain93% rain · wind 5 mph
- Monday Night42°FLight Rain93% rain · wind 2 to 6 mph
- Tuesday56°FSlight Chance Light Rain16% rain · wind 6 mph
- Tuesday Night44°FMostly Cloudy7% rain · wind 5 mph
- Veterans Day65°FPartly Sunnywind 6 mph
Forecast from the National Weather Service for this location, refreshed hourly.
When is Rock Lake stocked?
Most stockings come in October. Stocked 11 times in 2026, about every 5 days.
By month, all years
Year by year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 3 | 3 | 4 | 1 | ||||||||
| 2025 | 1 | 4 | 1 | 7 | ||||||||
| 2024 | 3 | 2 | 2 | 3 | 4 | 2 | ||||||
| 2023 | 1 | 2 | 1 | 5 | ||||||||
| 2022 | 3 | 2 | 7 | |||||||||
| 2021 | 2 | 1 | 2 | 7 | ||||||||
| 2020 | 2 | 2 | 2 | 6 | 1 | |||||||
| 2019 | 3 | 2 | 1 | 4 |
What is stocked
| Species | Stockings | Fish | Fish per stocking |
|---|---|---|---|
| Rainbow trout | 89 | 3,168,003 | 35,596 |
| Brown trout | 40 | 1,079,387 | 26,985 |
Stocking history
202611 stockings · 387,457 fish
| Date | Species | Fish | Since previous | Hatchery |
|---|---|---|---|---|
Nov 4Latest Wednesday · 5 days ago | Rainbow trout | 6,840 2,348 lb | 5 days | Lyons Ferry Hatchery |
Oct 30 Friday · 10 days ago | Rainbow trout | 11,520 3,600 lb | 16 days | Lyons Ferry Hatchery |
Oct 14 Wednesday · 4 weeks ago | Rainbow trout | 31,014 1,933 lb | 8 days | Spokane Hatchery |
Oct 6 Tuesday · 5 weeks ago | Brown trout | 38,220 1,820 lb | 1 day | Spokane Hatchery |
Oct 5 Monday · 5 weeks ago | Brown trout | 41,790 1,990 lb | 145 days | Spokane Hatchery |
May 13 Wednesday | Rainbow trout | 101,650 977 lb | 2 days | Ford Hatchery |
May 11 Monday | Rainbow trout | 60,592 541 lb | 4 days | Spokane Hatchery |
May 7 Thursday | Rainbow trout | 64,581 673 lb | 59 days | Spokane Hatchery |
Mar 9 Monday | Rainbow trout | 10,126 2,470 lb | 4 days | Ford Hatchery |
Mar 5 Thursday | Rainbow trout | 6,124 1,490 lb | 3 days | Ford Hatchery |
Mar 2 Monday | Brown trout | 15,000 3,000 lb | 122 days | Spokane Hatchery |
202513 stockings · 400,998 fish
| Date | Species | Fish | Since previous | Hatchery |
|---|---|---|---|---|
Oct 31 Friday | Rainbow trout | 7,500 2,500 lb | 4 days | Lyons Ferry Hatchery |
Oct 27 Monday | Rainbow trout | 21,560 2,156 lb | 3 days | Spokane Hatchery |
Oct 24 Friday | Rainbow trout | 7,650 2,550 lb | 1 day | Lyons Ferry Hatchery |
Oct 23 Thursday | Rainbow trout | 12,160 3,800 lb | 1 day | Lyons Ferry Hatchery |
Oct 22 Wednesday | Rainbow trout | 20,013 2,002 lb | 19 days | Spokane Hatchery |
Oct 3 Friday | Rainbow trout | 15,933 873 lb | 2 days | Spokane Hatchery |
Oct 1 Wednesday | Brown trout | 20,000 992 lb | 1 day | Spokane Hatchery |
Sep 30 Tuesday | Brown trout | 68,790 3,759 lb | 123 days | Spokane Hatchery |
May 30 Friday | Rainbow trout | 4 | 2 days | Rock Lake Conservation District |
May 28 Wednesday | Rainbow trout | 106,700 1,036 lb | 2 weeks | Ford Hatchery |
May 14 Wednesday | Rainbow trout | 56,280 563 lb | 1 week | Spokane Hatchery |
May 7 Wednesday | Rainbow trout | 50,002 500 lb | 64 days | Spokane Hatchery |
Mar 4 Tuesday | Brown trout | 14,406 2,718 lb | 15 weeks | Spokane Hatchery |
202416 stockings · 434,959 fish
| Date | Species | Fish | Since previous | Hatchery |
|---|---|---|---|---|
Nov 19 Tuesday | Rainbow trout | 4,238 451 lb | 1 day | Lyons Ferry Hatchery |
Nov 18 Monday | Rainbow trout | 12,447 1,324 lb | 33 days | Lyons Ferry Hatchery |
Oct 16 Wednesday | Rainbow trout | 13,500 4,500 lb | 2 days | Lyons Ferry Hatchery |
Oct 14 Monday | Rainbow trout | 14,281 4,540 lb | 4 days | Lyons Ferry Hatchery |
Oct 10 Thursday | Rainbow trout | 44,440 3,671 lb | 2 days | Spokane Hatchery |
Oct 8 Tuesday | Brown troutRainbow trout | 30,690 2,768 lb | 17 weeks | Spokane Hatchery |
Jun 11 Tuesday | Rainbow trout | 76,000 768 lb | 1 day | Ford Hatchery |
Jun 10 Monday | Rainbow trout | 28,600 275 lb | 5 days | Spokane Hatchery |
Jun 5 Wednesday | Rainbow trout | 70,096 674 lb | 6 days | Spokane Hatchery |
May 30 Thursday | Rainbow trout | 42,500 425 lb | 2 days | Ford Hatchery |
May 28 Tuesday | Rainbow trout | 72,360 724 lb | 43 days | Spokane Hatchery |
Apr 15 Monday | Rainbow trout | 4,385 1,185 lb | 3 days | Ford Hatchery |
Apr 12 Friday | Rainbow trout | 421 2 lb | 17 days | Rock Lake Conservation District |
Mar 26 Tuesday | Rainbow trout | 100 | 12 days | Leonard M Jennings E |
Mar 14 Thursday | Brown trout | 15,125 3,025 lb | 1 day | Spokane Hatchery |
Mar 13 Wednesday | Rainbow trout | 5,776 1,445 lb | 139 days | Ford Hatchery |
20239 stockings · 333,617 fish
- Oct 26 rainbow trout, 15,310 fish
- Oct 20 rainbow trout, 10,560 fish
- Oct 19 rainbow trout, 15,105 fish
- Oct 12 rainbow trout, 14,933 fish
- Oct 3 brown trout, 66,130 fish
- Jun 7 rainbow trout, 48,000 fish
- May 30 rainbow trout, 97,315 fish
- May 18 rainbow trout, 37,760 fish
- Mar 13 brown trout, rainbow trout, 28,504 fish
202212 stockings · 613,520 fish
- Oct 28 rainbow trout, 14,303 fish
- Oct 27 rainbow trout, 14,198 fish
- Oct 26 rainbow trout, 9,240 fish
- Oct 18 rainbow trout, 50,621 fish
- Oct 13 brown trout, 23,780 fish
- Oct 4 brown trout, 20,009 fish
- Oct 3 brown trout, 56,379 fish
- Jun 23 rainbow trout, 182,160 fish
- Jun 8 rainbow trout, 212,218 fish
- Mar 28 rainbow trout, 16,392 fish
- Mar 14 brown trout, 3,630 fish
- Mar 8 brown trout, 10,590 fish
202112 stockings · 562,055 fish
- Oct 29 brown trout, 10,010 fish
- Oct 28 rainbow trout, 13,386 fish
- Oct 27 rainbow trout, 13,630 fish
- Oct 22 brown trout, 28,490 fish
- Oct 21 rainbow trout, 24,570 fish
- Oct 19 brown trout, 84,965 fish
- Oct 12 rainbow trout, 50,506 fish
- Jun 21 rainbow trout, 85,000 fish
- Jun 8 rainbow trout, 52,000 fish
- May 20 rainbow trout, 168,241 fish
- Mar 17 rainbow trout, 17,000 fish
- Mar 15 brown trout, 14,257 fish
202013 stockings · 346,214 fish
- Nov 5 rainbow trout, 14,130 fish
- Oct 26 brown trout, 17,658 fish
- Oct 22 brown trout, 25,683 fish
- Oct 21 brown trout, rainbow trout, 41,140 fish
- Oct 20 rainbow trout, 23,074 fish
- Oct 19 rainbow trout, 13,620 fish
- Oct 8 rainbow trout, 9,020 fish
- Jun 25 rainbow trout, 18,194 fish
- Jun 23 rainbow trout, 39,000 fish
- May 28 rainbow trout, 100,000 fish
- May 7 rainbow trout, 16,095 fish
- Mar 27 rainbow trout, 13,600 fish
- Mar 16 brown trout, 15,000 fish
201910 stockings · 301,012 fish
- Oct 11 rainbow trout, 29,420 fish
- Oct 8 brown trout, 45,197 fish
- Oct 3 brown trout, 29,829 fish
- Oct 2 rainbow trout, 8,968 fish
- Week of Sep 30 rainbow trout, 27,286 fish
- Jun 12 rainbow trout, 20,350 fish
- Jun 11 rainbow trout, 92,040 fish
- Apr 15 rainbow trout, 13,164 fish
- Apr 3 rainbow trout, 18,750 fish
- Apr 1 brown trout, 16,008 fish
201812 stockings · 402,985 fish
- Nov 6 rainbow trout, 30,158 fish
- Oct 12 brown trout, 18,119 fish
- Oct 11 brown trout, 30,988 fish
- Oct 10 brown trout, rainbow trout, 48,206 fish
- Week of Oct 8 rainbow trout, 28,520 fish
- Oct 2 rainbow trout, 24,191 fish
- Sep 25 rainbow trout, 10,015 fish
- May 21 rainbow trout, 140,770 fish
- May 18 brown trout, 30,000 fish
- Mar 20 rainbow trout, 19,000 fish
- Mar 19 brown trout, 12,128 fish
- Mar 16 brown trout, 10,890 fish
20177 stockings · 322,413 fish
- Oct 11 rainbow trout, 3,000 fish
- Week of Oct 9 rainbow trout, 26,260 fish
- Oct 5 brown trout, rainbow trout, 30,530 fish
- Oct 4 brown trout, 68,452 fish
- May 31 rainbow trout, 150,166 fish
- Apr 24 brown trout, rainbow trout, 32,320 fish
- Mar 20 brown trout, 11,685 fish
20167 stockings · 142,160 fish
- Nov 3 brown trout, 14,110 fish
- Oct 28 brown trout, 32,000 fish
- Oct 27 brown trout, 30,590 fish
- Oct 24 rainbow trout, 28,000 fish
- Oct 20 rainbow trout, 4,500 fish
- Oct 4 rainbow trout, 6,080 fish
- Oct 3 brown trout, rainbow trout, 26,880 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.
Where is Rock Lake?
Whitman County, Washington. Approximate: the marker is the USGS place-name point for this water, not an agency location.
Stocked waters near Rock Lake
- Downs Lakelake · 9 mistocked Mar 11, 2025
- Williams Lakelake · 10 mistocked Oct 12, 2026
- Amber Lakelake · 12 mistocked May 14, 2026
- Badger Lakelake · 12 mistocked Oct 16, 2026
- Pine Tree Lakelake · 13 mistocked May 1, 2023
- Fishtrap Lakelake · 13 mistocked Oct 15, 2026
- Chapman Lakelake · 14 mistocked May 29, 2026
- Hog Lakelake · 15 mistocked Oct 7, 2026
All stocked waters in Whitman CountyStocked this week in Washington
Questions about Rock Lake
- When was Rock Lake last stocked?
- The latest reported stocking was Nov 4, 2026 (rainbow trout, 6,840 fish), according to Washington agency reports.
- How often is Rock Lake stocked?
- Stocked 11 times in 2026, about every 5 days. Across all years on record, most stockings come in October.
- Is Rock Lake stocked often?
- The most stocked water in Whitman County (122 stocking days on record). Stocked more often than 99% of Washington waters on our record. We count each day the agency reported stocking it.
- What kind of trout are stocked in Rock Lake?
- Rainbow trout (89 stockings, 3,168,003 fish); Brown trout (40 stockings, 1,079,387 fish).