Every stocked water on a map with live river flow and water temperature, plus an alert the day your water is stocked.
Seamline: Trout Fishing MapEvery stocked water on a map with live river flow and water temperature, plus an alert the day your water is stocked.
Mattoon Lake trout stocking: Kittitas County, Washington
Last stocked Mon, May 11, one of 5 stockings published in the last 12 months. Species: rainbow trout. At least 8,298 fish in the published counts. From Washington's published stocking reports.
Stocked in the last 12 months
- Mon, May 11: 3,240 rainbow trout
- Wed, Mar 25: 3,080 rainbow trout
- Mon, Mar 16: 1,610 rainbow trout
- Tue, Feb 24: 320 rainbow trout
- Fri, Oct 31, 2025: 48 rainbow trout
When Mattoon Lake gets stocked
Over the last year Washington stocked it in February, March, May and October.
Seamline maps Mattoon Lake and every other stocked water in Washington with live river flow and water temperature where a gauge reports them, public access points, and an alert the day it is stocked.
Other stocked waters in Kittitas County
Cooper Lake, Fio Rito Lk-n, Kiwanas Pond, Lavendar Lake, Mccabe Pond, Milk Pond, Naneum Pond, Quartz C Pond-naches, Woodhouse Pds
Updated Oct 10, 2:20 PM UTC from Washington's official stocking data. Dates marked "Week of" are published by the week, not the day.