Mason Lk - stocking log

Washington · Washington Department of Fish and Wildlife (WDFW)

Mason Lk is one of the workhorses of Washington's stocking program: 18 plants on record since 2025, averaging about 9 a year, mostly in July and October.

Mason Lk was last stocked on August 9, 2026 with 820 Rainbow, per Washington Department of Fish and Wildlife (WDFW).
18 stockings are on file for this water since 2025, totaling 248,490 fish where counts were published.

Recorded stockings by month:

JFMAMJJASOND

Stocking log

August 9, 2026Rainbow820 fish · King

August 3, 2026Rainbow16,295 fish · Mason

August 3, 2026Rainbow7,730 fish · Mason

July 28, 2026Rainbow6,445 fish · Mason

July 28, 2026Rainbow8,735 fish · Mason

July 28, 2026Rainbow15,615 fish · Mason

July 27, 2026Rainbow20,095 fish · Mason

July 27, 2026Rainbow18,675 fish · Mason

July 27, 2026Rainbow8,120 fish · Mason

June 8, 2026Rainbow31,677 fish · Mason

April 7, 2026Rainbow56,100 fish · Mason

April 1, 2026Rainbow33,190 fish · Mason

November 10, 2025Rainbow2,825 fish · Mason

November 10, 2025Rainbow200 fish · Mason

October 15, 2025Rainbow9,500 fish · Mason

October 14, 2025Rainbow4,616 fish · Mason

October 14, 2025Rainbow1,147 fish · Mason

October 13, 2025Rainbow6,705 fish · Mason

Field note · It has been a while since the last posted plant here. Stocked trout that survive the early rush spread out and feed more naturally, so fish this like wild water: lighter line, smaller offerings, and the cooler ends of the day.

All Washington stockings · every Washington water with a log · state CSV · how to fish a fresh plant

Log reflects data.wa.gov dataset 6fex-3r7d 'WDFW Fish Plants' as of 2026-10-04. Waters can be stocked without an advance posting - treat this as a record, not a promise.

Mason Lk - stocking log

Stocking log

Hear when Washington waters get stocked