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Rock Lake Fishing and Stocking

Whitman County, Washington. The Washington Department of Fish and Wildlife lists 13 stockings here in the latest year of its data (Brown Trout, Rainbow Trout and Steelhead), the most recent on Oct 30, 2026. Stocked in March, May and October in two or more years.

2026 Stocking

DateSpeciesFishSize
Oct 30, 2026Rainbow Trout11,520Legals, 3.2 fish per pound
Oct 14, 2026Rainbow Trout4,613Fry, 16.3 fish per pound
Oct 14, 2026Rainbow Trout13,280Fry, 16.0 fish per pound
Oct 6, 2026Brown Trout38,220Fry, 21.0 fish per pound
Oct 5, 2026Brown Trout41,790Fry, 21.0 fish per pound
May 13, 2026Rainbow Trout52,250Fry, 104.0 fish per pound
May 11, 2026Rainbow Trout60,592Fry, 112.0 fish per pound
May 7, 2026Rainbow Trout64,581Fry, 96.0 fish per pound
Mar 9, 2026Rainbow Trout10,126Legals, 4.1 fish per pound
Mar 5, 2026Rainbow Trout6,124Legals, 4.11 fish per pound
Mar 2, 2026Brown Trout15,000Legals, 5.0 fish per pound

2025 Stocking

DateSpeciesFishSize
Oct 31, 2025Steelhead11,250Fingerling, 25.0 fish per pound
Oct 31, 2025Rainbow Trout7,500Legals, 3.0 fish per pound
Oct 27, 2025Rainbow Trout21,560Legals, 10.0 fish per pound
Oct 24, 2025Rainbow Trout7,650Legals, 3.0 fish per pound
Oct 23, 2025Rainbow Trout12,160Legals, 3.2 fish per pound
Oct 22, 2025Rainbow Trout9,136Legals, 10.0 fish per pound
Oct 3, 2025Rainbow Trout15,933Fry, 18.25 fish per pound
Oct 1, 2025Brown Trout15,570Fry, 20.0 fish per pound
Oct 1, 2025Brown Trout4,430Fry, 20.8 fish per pound
Sep 30, 2025Brown Trout42,712Fry, 18.3 fish per pound
May 30, 2025Rainbow Trout4Fry, 250.0 fish per pound
May 28, 2025Rainbow Trout35,181Fry, 103.0 fish per pound
May 14, 2025Rainbow Trout56,280Fry, 100.0 fish per pound
May 7, 2025Rainbow Trout31,906Fry, 100.0 fish per pound
Mar 4, 2025Brown Trout14,406Legals, 5.3 fish per pound
Feb 19, 2025Steelhead20,000Smolt, 10.0 fish per pound
Feb 2, 2025Steelhead80,000Yearling, 10.25 fish per pound

2024 Stocking

DateSpeciesFishSize
Nov 19, 2024Rainbow Trout4,238Legals, 9.4 fish per pound
Nov 18, 2024Rainbow Trout12,447Legals, 9.4 fish per pound
Oct 16, 2024Rainbow Trout13,500Legals, 3.0 fish per pound
Oct 14, 2024Rainbow Trout10,561Legals, 3.2 fish per pound
Oct 14, 2024Rainbow Trout3,720Legals, 3.0 fish per pound
Oct 10, 2024Steelhead29,784Fingerling, 51.0 fish per pound
Oct 10, 2024Rainbow Trout11,978Fry, 13.8 fish per pound
Oct 10, 2024Rainbow Trout7,812Legals, 10.0 fish per pound
Oct 10, 2024Rainbow Trout8,724Fry, 16.4 fish per pound
Oct 8, 2024Rainbow Trout15,240Legals, 10.0 fish per pound
Oct 8, 2024Brown Trout7,310Fry, 17.0 fish per pound
Jun 11, 2024Rainbow Trout76,000Fry, 99.0 fish per pound
Jun 10, 2024Rainbow Trout28,600Fry, 104.0 fish per pound
Jun 5, 2024Rainbow Trout70,096Fry, 104.0 fish per pound
May 30, 2024Rainbow Trout42,500Fry, 100.0 fish per pound
May 28, 2024Rainbow Trout72,360Fry, 100.0 fish per pound
Apr 15, 2024Rainbow Trout4,385Legals, 3.7 fish per pound
Apr 12, 2024Rainbow Trout421Fry, 250.0 fish per pound
Mar 26, 2024Rainbow Trout100Fry, 400.0 fish per pound
Mar 14, 2024Brown Trout15,125Legals, 5.0 fish per pound
Mar 13, 2024Rainbow Trout2,746Legals, 4.0 fish per pound

Other Stocked Waters in Whitman County

About This Data

Every row comes from the stocking information published by the Washington Department of Fish and Wildlife, checked Nov 3, 2026. The agency lists this water as “ROCK LK (WHIT)”. Species and sizes are given as the agency names them; a dash means the agency does not say.

More for Washington Anglers

Stocking dates and places can change without notice; check with the agency before a trip. ReelTourney is not affiliated with the Washington Department of Fish and Wildlife.