Mayfield Lake

Mayfield Lake

Mayfield Lake last stocked August 25, 2026, with 43 stocking events on record since 2025.

Last stocked

August 25, 2026

Plants on record

43

Since 2025

Species recorded

1

Average size

11.3 in

Surface acres

2,021.9

Elevation

428 ft

Stocking history

Showing 15 of 43 plants Showing 43 plants

Source: Washington Department of Fish and Wildlife.
Date Species Quantity Avg. length Source
August 25, 2026 Rainbow Trout 2,220 12.8 in report
August 19, 2026 Rainbow Trout 2,320 12.7 in report
August 11, 2026 Rainbow Trout 2,520 12.5 in report
August 5, 2026 Rainbow Trout 971 12.2 in report
August 5, 2026 Rainbow Trout 1,534 12.7 in report
July 29, 2026 Rainbow Trout 2,660 12.3 in report
July 21, 2026 Rainbow Trout 2,800 12.2 in report
July 14, 2026 Rainbow Trout 2,500 12.5 in report
July 9, 2026 Rainbow Trout 2,500 10 in report
July 8, 2026 Rainbow Trout 3,120 11.9 in report
June 30, 2026 Rainbow Trout 3,320 11.7 in report
June 23, 2026 Rainbow Trout 2,980 12 in report
June 16, 2026 Rainbow Trout 3,560 11.4 in report
June 10, 2026 Rainbow Trout 1,900 11.2 in report
June 10, 2026 Rainbow Trout 1,764 11.5 in report
June 3, 2026 Rainbow Trout 1,860 11.2 in report
June 3, 2026 Rainbow Trout 1,872 11.3 in report
May 28, 2026 Rainbow Trout 5,940 9.6 in report
May 28, 2026 Rainbow Trout 4,860 9.6 in report
May 21, 2026 Rainbow Trout 5,400 9.6 in report
May 5, 2026 Rainbow Trout 4,800 10.2 in report
April 9, 2026 Rainbow Trout 5,200 9.8 in report
April 2, 2026 Rainbow Trout 5,400 9.6 in report
August 26, 2025 Rainbow Trout 2,560 12.4 in report
August 20, 2025 Rainbow Trout 2,665 12.4 in report
August 11, 2025 Rainbow Trout 2,526 12.5 in report
August 5, 2025 Rainbow Trout 2,767 12.2 in report
July 29, 2025 Rainbow Trout 2,660 12.3 in report
July 23, 2025 Rainbow Trout 2,860 12.1 in report
July 16, 2025 Rainbow Trout 3,160 11.8 in report
July 8, 2025 Rainbow Trout 3,120 11.9 in report
July 2, 2025 Rainbow Trout 3,460 11.5 in report
June 25, 2025 Rainbow Trout 3,552 11.5 in report
June 18, 2025 Rainbow Trout 1,700 11.6 in report
June 17, 2025 Rainbow Trout 1,700 11.6 in report
June 11, 2025 Rainbow Trout 3,915 11.1 in report
June 4, 2025 Rainbow Trout 4,105 10.9 in report
May 29, 2025 Rainbow Trout 4,400 10.6 in report
May 22, 2025 Rainbow Trout 4,400 10.6 in report
May 1, 2025 Rainbow Trout 4,800 10.2 in report
April 10, 2025 Rainbow Trout 5,400 9.6 in report
April 3, 2025 Rainbow Trout 3,120 10.2 in report
April 3, 2025 Rainbow Trout 2,100 9 in report
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Common questions

When was Mayfield Lake last stocked?
Mayfield Lake was last stocked on August 25, 2026, according to the Washington Department of Fish and Wildlife.
How often is Mayfield Lake stocked?
Mayfield Lake has been stocked 43 times since 2025 in the records we have on file.
What species are stocked at Mayfield Lake?
Mayfield Lake has recorded stockings of Rainbow Trout.

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Access and facts

Water type
reservoir
Nearest town
Mossyrock
Boat ramp
Yes
ADA accessible
Yes
Fee required
Yes
Facilities
restrooms, camping

Reservoir on the Cowlitz River behind Mayfield Dam. Ike Kinswa State Park sits along the shore with a boat launch, ADA accessible campsites and parking, and fishing for tiger muskie, bass, kokanee, and rainbow trout. Discover Pass required, plus a $7/day launch fee.

Sources: water_type (accessed 2026-09-19) , access.boat_ramp (accessed 2026-09-19) , access.ada (accessed 2026-09-19) , access.fee (accessed 2026-09-19) , facilities (accessed 2026-09-19) , nearest_town (accessed 2026-09-19)

Species stocked here

Nearest lakes