Stocked Lakes

Mayfield Reservoir fish stocking

Lewis County, Washington

Last stocked
Aug 25, 2026
6 weeks ago
Fish, last 12 months
73,201
24 stockings
Species
Rainbow Trout, Tiger Muskie

Mayfield Reservoir in Lewis County, Washington was last stocked on August 25, 2026 with 2,220 rainbow trout from Mckernan Hatchery. Across the 5 years shown here, WDFW released 332,692 fish in 100 separate stockings. Stockings here are most common in May, June, and July.

When Mayfield Reservoir gets fish

Total fish stocked in each month, all years shown on this page combined.

Stocking history

Washington reports the exact release date. Sizes for Washington are estimated from the reported fish-per-pound.

2026 · 73,201 fish

DateSpeciesFishSizeType
Rainbow Trout2,22012.2″Catchable
Rainbow Trout2,32012″Catchable
Rainbow Trout2,52011.7″Catchable
Rainbow Trout1,53412″Catchable
Rainbow Trout97111.2″Catchable
Rainbow Trout2,66011.5″Catchable
Rainbow Trout2,80011.3″Catchable
Rainbow Trout2,50011.7″Catchable
Rainbow Trout2,5009.3″Catchable
Rainbow Trout3,12010.9″Catchable
Rainbow Trout3,32010.6″Catchable
Rainbow Trout2,98011″Catchable
Rainbow Trout3,56010.4″Catchable
Rainbow Trout1,76410.5″Catchable
Rainbow Trout1,90010.2″Catchable
Rainbow Trout1,87210.3″Catchable
Rainbow Trout1,86010.2″Catchable
Rainbow Trout4,8609″Catchable
Rainbow Trout5,9409″Catchable
Rainbow Trout5,4009″Catchable
Rainbow Trout4,8009.4″Catchable
Tiger Muskie1,2008.4″Catchable
Rainbow Trout5,2009.2″Catchable
Rainbow Trout5,4009″Catchable

2025 · 66,203 fish

DateSpeciesFishSizeType
Rainbow Trout2,56011.6″Catchable
Rainbow Trout2,66511.5″Catchable
Rainbow Trout2,52611.7″Catchable
Rainbow Trout2,76711.3″Catchable
Rainbow Trout2,66011.5″Catchable
Rainbow Trout2,86011.2″Catchable
Rainbow Trout3,16010.8″Catchable
Rainbow Trout3,12010.9″Catchable
Rainbow Trout3,46010.5″Catchable
Rainbow Trout3,55210.4″Catchable
Rainbow Trout1,70010.6″Catchable
Rainbow Trout1,70010.6″Catchable
Rainbow Trout3,91510.1″Catchable
Rainbow Trout4,1059.9″Catchable
Rainbow Trout4,4009.7″Catchable
Rainbow Trout4,4009.7″Catchable
Tiger Muskie1,2338.5″Catchable
Rainbow Trout4,8009.4″Catchable
Rainbow Trout5,4009″Catchable
Rainbow Trout2,1008.7″Catchable
Rainbow Trout3,1209.4″Catchable

2024 · 65,008 fish

DateSpeciesFishSizeType
Rainbow Trout2,50011.7″Catchable
Rainbow Trout2,48611.7″Catchable
Rainbow Trout2,38011.9″Catchable
Rainbow Trout2,68011.4″Catchable
Rainbow Trout2,92011.1″Catchable
Rainbow Trout2,62011.5″Catchable
Rainbow Trout3,32010.6″Catchable
Rainbow Trout3,28010.7″Catchable
Rainbow Trout3,42010.5″Catchable
Rainbow Trout1,81010.3″Catchable
Rainbow Trout1,81010.4″Catchable
Rainbow Trout3,90010.1″Catchable
Rainbow Trout3,83710.2″Catchable
Rainbow Trout4,08010″Catchable
Rainbow Trout57012.6″Catchable
Rainbow Trout7,8899.5″Catchable
Tiger Muskie1068.6″Catchable
Rainbow Trout5,0009.3″Catchable
Rainbow Trout5,0009.3″Catchable
Rainbow Trout5,4009″Catchable

2023 · 66,790 fish

DateSpeciesFishSizeType
Rainbow Trout2,42011.8″Catchable
Rainbow Trout2,80011.3″Catchable
Rainbow Trout2,72011.4″Catchable
Rainbow Trout2,80011.3″Catchable
Rainbow Trout3,24010.7″Catchable
Rainbow Trout3,46010.5″Catchable
Rainbow Trout3,78010.2″Catchable
Rainbow Trout3,60010.4″Catchable
Rainbow Trout3,52010.4″Catchable
Rainbow Trout3,40010.6″Catchable
Rainbow Trout4,05010″Catchable
Rainbow Trout3,60010.4″Catchable
Rainbow Trout5,0009.3″Catchable
Rainbow Trout5,2009.2″Catchable
Tiger Muskie1,0007.7″Catchable
Rainbow Trout5,4009″Catchable
Rainbow Trout5,4009″Catchable
Rainbow Trout5,4009″Catchable

2022 · 61,490 fish

DateSpeciesFishSizeType
Rainbow Trout2,60011.5″Catchable
Rainbow Trout2,58011.6″Catchable
Rainbow Trout2,72011.4″Catchable
Rainbow Trout2,66011.5″Catchable
Rainbow Trout3,02011″Catchable
Rainbow Trout3,20010.8″Catchable
Rainbow Trout3,44010.5″Catchable
Rainbow Trout3,60010.4″Catchable
Rainbow Trout3,54010.4″Catchable
Rainbow Trout4,0809.9″Catchable
Rainbow Trout4,2009.8″Catchable
Rainbow Trout4,4009.7″Catchable
Rainbow Trout4,6009.5″Catchable
Tiger Muskie8508.7″Catchable
Rainbow Trout4,8009.4″Catchable
Rainbow Trout5,6008.9″Catchable
Rainbow Trout5,6008.9″Catchable
Check the rules before you go. Seasons, daily limits, size limits and gear rules can be different on Mayfield Reservoir than elsewhere in Washington. See the official Washington fishing regulations.

Frequently asked questions

When was Mayfield Reservoir last stocked?

WDFW records show Mayfield Reservoir was last stocked on August 25, 2026 (6 weeks ago), with 2,220 rainbow trout.

What fish are stocked in Mayfield Reservoir?

Mayfield Reservoir has been stocked with rainbow trout and tiger muskie in the years shown here (2022–2026).

When does Mayfield Reservoir usually get stocked?

Most fish have been stocked in May, June, and July. Exact dates change from year to year, so check back or see WDFW's official stocking page.

Do I need a license to fish Mayfield Reservoir?

Yes, anglers generally need a valid Washington fishing license. Check the current Washington fishing regulations for seasons, limits and any special rules for Mayfield Reservoir.

Other stocked waters in Lewis County

Willame Lake

Lewis County
Last stocked Sep 12, 2026
Cutthroat Trout

Watch Lake

Lewis County
Last stocked Sep 11, 2026
Cutthroat Trout

Frying Pan Lake

Lewis County
Last stocked Sep 7, 2026
Cutthroat Trout

Fizrenken Lake

Lewis County
Last stocked Sep 3, 2026
Cutthroat Trout

Wright Lake

Lewis County
Last stocked Sep 3, 2026
Cutthroat Trout

Cora Lake

Lewis County
Last stocked Aug 30, 2026
Rainbow Trout

All 46 stocked waters in Lewis 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.