When was Lake Boren last stocked?

The latest reported stocking was May 26, 2026 (rainbow trout, 1,350 fish), according to Washington agency reports.

How often is Lake Boren stocked?

It was stocked 1 times in the last 12 months.

What kind of trout are stocked in Lake Boren?

Rainbow trout (2 stockings, 2,500 fish).

How warm is the water near Lake Boren?

The nearest USGS gage read 57°F on Sep 25. Prime range for trout (about 50 to 65°F): fish are feeding actively.

Lake Boren trout stocking

King County, Washington · lake

Lake Boren was last stocked 4 months ago (May 26, 2026). We have 2 stockings on record since May 12, 2025, 1 in the last 12 months (1,350 fish). Species stocked: rainbow trout.

Last stocked

4 months ago

May 26, 2026

Next planned

Not announced

Last 12 months

1 stocking

1,350 fish

Water temperature

57°F

Ideal for trout

River conditions

Nearest USGS gage: CEDAR RIVER AT RENTON, WA (6 km away, on a different stream or lake).

Water temperature: 57°F
Flow: 261 cfs; much higher than usual for the last six weeks
Gage height: 8.41 ft

Ideal for trout. Prime range for trout (about 50 to 65°F): fish are feeding actively.

Water temperature (daily high), last six weeks (°F), daily. Latest: 57 °F on Sep 23. The green band is the ideal range for trout.

Streamflow, last six weeks (cfs), daily. Latest: 235 cfs on Sep 23.

Latest reading Sep 25, 2026, 3:15 AM UTC. USGS data are provisional. Gage page at USGS.

Weather at Lake Boren

Tonight
53°F
Light Rain
93% rain · wind 2 mph
Friday
61°F
Showers And Thunderstorms
97% rain · wind 3 to 8 mph
Friday Night
48°F
Chance Light Rain then Mostly Cloudy
46% rain · wind 5 to 9 mph
Saturday
62°F
Partly Sunny
wind 1 to 5 mph
Saturday Night
46°F
Mostly Cloudy
wind 5 mph
Sunday
63°F
Mostly Sunny
1% rain · wind 3 mph

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

What is stocked

Species	Stockings	Fish	Fish per stocking	Typical size
Rainbow trout	2	2,500	1,250

Stocking history

Date	Species	Fish	Pounds	Hatchery
May 26, 2026	Rainbow trout	1,350	614	Puyallup Hatchery
May 12, 2025	Rainbow trout	1,150	500	Puyallup Hatchery

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 Lake Boren?

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

Directions Larger map

Stocked waters near Lake Boren

Lewis Creekstream · 4 mistocked May 27, 2025
Pine Lakelake · 7 mistocked Apr 13, 2026
Lake Desirelake · 7 mistocked Mar 31, 2026
Spring Lakelake · 8 mistocked May 5, 2026
Shady Lakelake · 8 mistocked Apr 6, 2026
Beaver Lakeslake · 9 mistocked Apr 8, 2026
Angle Lakelake · 9 mistocked Apr 30, 2026
Shadow Lakelake · 10 mistocked May 15, 2026

All stocked waters in King County Stocked this week in Washington

Questions about Lake Boren

When was Lake Boren last stocked?: The latest reported stocking was May 26, 2026 (rainbow trout, 1,350 fish), according to Washington agency reports.
How often is Lake Boren stocked?: It was stocked 1 times in the last 12 months.
What kind of trout are stocked in Lake Boren?: Rainbow trout (2 stockings, 2,500 fish).
How warm is the water near Lake Boren?: The nearest USGS gage read 57°F on Sep 25. Prime range for trout (about 50 to 65°F): fish are feeding actively.