Lost Lake

Lost Lake gets its trout in small, frequent batches: 8 release dates across 5 months in 2025, averaging 1,279 fish a date, from Jan 16, 2025 to Dec 12, 2025.

WDFW data through Oct 30, 2026. Page updated November 5, 2026.

Lost Lake in numbers

catchable trout in 2025: 10,230
so far in 2026, through Oct 30: 9,814
2025 against the 2015–2025 average of 10,119 a year: +1%

2026 is running close to 2025: 9,814 fish through Oct 30, against 10,130 by the same date a year earlier. The latest batch, 2,000 rainbow trout, went in on Sep 28, 2026, 38 days before this page was built.

WDFW lists Lost Lake as 122.6 acres in Mason County, at 495 ft. It is the smaller of the 2 Mason County waters on this site. Its 2025 stocking came to about 83 catchable trout per acre, 27th of the 37 waters on this site with a WDFW acreage.

Release log

Every release since January 2025

14 species-date records, newest first. Fish per lb is the figure WDFW reports for each batch.

Latest batch, Sep 28, 20262,000rainbow trout, 1.1 lb each

Autumn 2026

Sep 28Rainbow trout2,0000.9 per lb · avg 1.1 lb

Spring 2026

Apr 27Rainbow trout2,4251.2 per lb · avg 13 oz

Apr 1Rainbow trout4090.3 per lb · avg 3.3 lb

Mar 16Rainbow trout2,3702.3 per lb · avg 7 oz

Mar 9Rainbow trout2,5352.3 per lb · avg 7 oz

Winter 2026

Jan 15Rainbow trout750.2 per lb · avg 5.0 lb

Autumn 2025

Sep 26Rainbow trout3001 per lb · avg 1.0 lb

Sep 22Rainbow trout2,0000.9 per lb · avg 1.1 lb

Spring 2025

Apr 28Rainbow trout2,4501 per lb · avg 1.0 lb

Apr 9Rainbow trout2000.3 per lb · avg 3.3 lb

Mar 26Rainbow trout2000.3 per lb · avg 3.3 lb

Mar 17Rainbow trout4,9052.5 per lb · avg 6 oz

Winter 2025

Dec 12Cutthroat trout1000.5 per lb · avg 2.0 lb

Jan 16Rainbow trout750.2 per lb · avg 5.0 lb

2015 – 2026

Fish released each year

2025 is yellow. 2026 is outlined because the year is not over: the data runs to Oct 30, 2026. The busiest full year was 2022, with 10 release dates and 10,815 fish; the 2015–2025 average is 8.9 release dates a year.

2015: 10,550 catchable fish on 7 release dates
2016: 9,820 catchable fish on 7 release dates
2017: 7,605 catchable fish on 7 release dates
2018: 10,479 catchable fish on 10 release dates
2019: 10,614 catchable fish on 14 release dates
2020: 10,240 catchable fish on 9 release dates
2021: 10,145 catchable fish on 7 release dates
11k2022: 10,815 catchable fish on 10 release dates
2023: 10,486 catchable fish on 11 release dates
2024: 10,329 catchable fish on 8 release dates
10k2025: 10,230 catchable fish on 8 release dates
10k2026 (to Oct 30): 9,814 catchable fish on 6 release dates

How big are these fish?

4 to 8 oz: 9,810 fish, 49%
8 to 16 oz: 2,425 fish, 12%
1 to 2 lb: 6,750 fish, 34%
2 lb and over: 1,059 fish, 5%

Weight is 1 ÷ fish per lb, as WDFW reports it for each batch. It is a batch average, not a guarantee for any one fish. Counts cover every release since January 2025.

Notes from the records

The biggest single batch since January 2025 was 4,905 rainbow trout on Mar 17, 2025. The heaviest fish were 75 rainbow trout on Jan 15, 2026, at 0.2 per lb, about 5.0 lb each.

Species in these records: rainbow trout, cutthroat trout.

Timing shifts from year to year. Treat this as a pattern, not a promise.