Cooper Lake trout stocking

Kittitas County, Washington · lake

Cooper Lake was last stocked 4 months ago (May 26, 2026). We have 2 stockings on record since May 28, 2025, 1 in the last 12 months (3,000 fish). Species stocked: rainbow trout.

Weather at Cooper Lake

• Tonight
  43°F
  Rain Showers
  78% rain · wind 3 mph
• Friday
  48°F
  Showers And Thunderstorms
  97% rain · wind 2 to 9 mph
• Friday Night
  34°F
  Rain Showers
  89% rain · wind 5 to 12 mph
• Saturday
  50°F
  Mostly Sunny
  1% rain · wind 5 mph
• Saturday Night
  34°F
  Mostly Cloudy
  wind 3 mph
• Sunday
  54°F
  Mostly Sunny
  1% rain · wind 1 to 5 mph

Forecast from the National Weather Service for this location, refreshed hourly.

What is stocked

Stocking history

From Washington fish and wildlife agency reports, collected nightly and kept after the agency takes them down. Agencies revise reports; check the agency's report before you go.

Where is Cooper Lake?

Kittitas County, Washington. Approximate: the marker is the USGS place-name point for this water, not an agency location.

DirectionsLarger map

Stocked waters near Cooper Lake

• Thorp Lakelake · 4 mistocked Aug 3, 2026
• Opal Lakelake · 5 mistocked Aug 3, 2025
• Summit Chief Lakelake · 7 mistocked Jul 18, 2026
• Deer Lakes (1)lake · 8 mistocked Jul 7, 2026
• Lake Lillianlake · 8 mistocked Jul 26, 2026
• Kachess Lakelake · 8 mistocked Sep 4, 2026
• Gold Lakelake · 8 mistocked Aug 21, 2025
• Ridge Lakelake · 9 mistocked Aug 31, 2025

All stocked waters in Kittitas CountyStocked this week in Washington

Questions about Cooper Lake

When was Cooper Lake last stocked?

The latest reported stocking was May 26, 2026 (rainbow trout, 3,000 fish), according to Washington agency reports.

How often is Cooper Lake stocked?

It was stocked 1 times in the last 12 months.

What kind of trout are stocked in Cooper Lake?

Rainbow trout (2 stockings, 6,000 fish).