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Stocked last season

Mason Lake Fish Stocking

King County, Washington · 1995 to 2026 on record

According to WDFW records, Mason Lake has 14 stocking records on file across 1 species. The most recent stocking season represented is 2026.

Mason Lake stocking
Mason Lake photo
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14
Stocking records
9,653
Fish reported stocked
1
Species
2026
Latest season

Stocking activity by season

12 seasons on record, most in the 2010 (2 records). Click a bar to jump to that season below.

1 records
2026 · 820 fish
1995
2000
2001
2003
2004
2007
2010
2014
2017
2020
2023
2026

Stocking records per season (labelled by the season's end year). Washington's source reports by season, so records aren't broken out by month.

Most-stocked species

Rainbow 14 records

Location

Exact coordinates not yet available · King County

Map not available yet
We don't have coordinates for this water on file.

Stocking history

Values shown exactly as the agency reported them; species names are normalized for search.

SpeciesFish stockedSizePhase
Rainbow 820 Fry · TOKUL CR HATCHERY —

A stocking record does not guarantee fish remain present or may legally be harvested. Check current Washington fishing regulations →

Quick facts

Latest season 2026
Most stocked Rainbow
Species Rainbow
County King
Seasons on record 1995 – 2026
Fish reported 9,653
Coordinates —

Data source

Compiled from public records published by the Washington Department of Fish and Wildlife. StockedSpots is independent and not affiliated with or endorsed by WDFW.

Source: Washington Department of Fish and Wildlife (WDFW). Data last checked September 1, 2026.
View WDFW source →

Frequently asked questions

WDFW records show Mason Lake stocked with Rainbow.

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