Spencer Lake

The hatchery truck comes to Spencer Lake often: 9 release dates in 2025, in 6 different months, about 2,211 fish each time. The first came on Jan 2, 2025, the last on Dec 18, 2025.

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

Spencer Lake in numbers

catchable trout in 2025: 19,901
so far in 2026, through Oct 30: 15,858
2025 against the 2015–2025 average of 18,971 a year: +5%

2026 is running behind 2025: 15,858 fish through Oct 30, against 18,944 by the same date a year earlier. The latest batch, 4,000 rainbow trout, went in on Sep 28, 2026, 38 days before this page was built.

WDFW lists Spencer Lake as 212.4 acres in Mason County, at 175 ft. It is the larger of the 2 Mason County waters on this site. Per acre, Spencer Lake got about 94 catchable trout in 2025, which puts it 25th of the 37 waters on this site with a WDFW acreage.

Release log

Every release since January 2025

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

Latest batch, Sep 28, 20264,000rainbow trout, 1.1 lb each

Autumn 2026

Sep 28Rainbow trout4,0000.9 per lb · avg 1.1 lb

Spring 2026

May 20Rainbow trout1,8201.2 per lb · avg 13 oz

Apr 22Rainbow trout2,0152.1 per lb · avg 8 oz

Apr 21Rainbow trout3,0002.3 per lb · avg 7 oz

Apr 8Rainbow trout3,8002.5 per lb · avg 6 oz

Mar 23Rainbow trout6802.4 per lb · avg 7 oz

Winter 2026

Feb 20Rainbow trout1430.2 per lb · avg 5.0 lb

Jan 15Rainbow trout4000.2 per lb · avg 5.0 lb

Autumn 2025

Nov 24Rainbow trout6570.7 per lb · avg 1.4 lb

Sep 29Rainbow trout5921 per lb · avg 1.0 lb

Sep 24Rainbow trout4,0270.9 per lb · avg 1.1 lb

Spring 2025

May 30Rainbow trout2,7102.4 per lb · avg 7 oz

May 20Rainbow trout1,2002 per lb · avg 8 oz

Apr 4Rainbow trout10,0002.2 per lb · avg 7 oz

Winter 2025

Dec 18Cutthroat trout3000.5 per lb · avg 2.0 lb

Jan 30Rainbow trout2010.2 per lb · avg 5.0 lb

Jan 2Cutthroat trout2140.7 per lb · avg 1.4 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 2023, with 11 release dates and 21,320 fish; the 2015–2025 average is 9.4 release dates a year.

2015: 18,675 catchable fish on 6 release dates
2016: 17,485 catchable fish on 8 release dates
2017: 17,870 catchable fish on 7 release dates
2018: 17,540 catchable fish on 7 release dates
2019: 19,312 catchable fish on 11 release dates
2020: 19,699 catchable fish on 11 release dates
2021: 18,989 catchable fish on 10 release dates
2022: 18,371 catchable fish on 11 release dates
21k2023: 21,320 catchable fish on 11 release dates
2024: 19,514 catchable fish on 12 release dates
20k2025: 19,901 catchable fish on 9 release dates
16k2026 (to Oct 30): 15,858 catchable fish on 8 release dates

How big are these fish?

4 to 8 oz: 22,205 fish, 62%
8 to 16 oz: 3,020 fish, 8%
1 to 2 lb: 9,490 fish, 27%
2 lb and over: 1,044 fish, 3%

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 10,000 rainbow trout on Apr 4, 2025. The heaviest fish were 400 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.