Mason Lake
WDFW logged 1 trout stocking date at Mason Lake in 2026 so far, 820 fish in all. The latest was on Aug 9, 2026. WDFW lists it as “Mason Lk (King)”.
WDFW data pulled . Latest record in the WDFW data for any water: Nov 4, 2026.
Mason Lake in numbers
- fish stocked in 2026, through Nov 6
- 820
- by the same date in 2025
- 0
- in all of 2025
- 0
Every stocking record
Every trout and kokanee release WDFW lists for this water in the last two years, newest first, then yearly totals since 2020. Counts include fry and fingerlings as well as catchable trout: WDFW calls catchable fish “legals”. Fish per pound is WDFW’s figure for each release; fewer fish per pound means bigger fish.
| Date | Species | Fish | Life stage | Fish per lb |
|---|---|---|---|---|
| Aug 9 | Rainbow trout820 fish · Fry | 820 | Fry | 473 |
| Date | Species | Fish | Life stage | Fish per lb |
|---|---|---|---|---|
| Sep 7 | Rainbow trout820 fish · Fry | 820 | Fry | 280 |
| Year | Stocking dates | Fish |
|---|---|---|
| 2026 | 1 | 820 |
| 2023 | 1 | 820 |
| 2020 | 1 | 820 |
Trout stocked each year
2026 is outlined because the year is not over. The tallest full year is yellow. Counts include fry and fingerlings.
What is stocked here
| Species | Fish | Share |
|---|---|---|
| Rainbow trout | 2,460 | 100% |
Map point 47.4237, -121.5512: the USGS Geographic Names Information System point for this lake (feature 1522794). It marks the water, not a parking lot or a boat launch.
Closest waters on this site
Straight-line distance between USGS map points, not driving distance.
Also in King County: Green Lake, Lake Meridian, Lake Alice, Beaver Lakes (king) T24, Langlois Lake, Angle Lake, Pine Lake, Lake Sawyer.
Source: WDFW Fish Plants dataset, data.wa.gov, Washington Department of Fish and Wildlife. Pulled . Check the agency and the current fishing rules before you go.
Near Mason Lake
Boat access, bait shops, rentals and places to stay within 10 miles. Distances are straight lines from the map point of the water, not driving distance.
Campgrounds and RV parks
nearest 3- Tinkham Campgroundcampground · King County1.7 mi
- Denny Creek Campgroundcampground · King County5.1 mi
- Denny Creek - Melakwa Lakecampground5.1 mi
Lodging
nearest 3- Summit West - Alpenhaus Lodgehotel · Kalama6.3 mi
- Gnome Homecabins · Snoqualmie Pass6.5 mi
- Summit Innlodge · Snoqualmie Pass6.5 mi
Businesses: Overture Maps Foundation open places data (release 2026-10-21.0, pulled 2026-11-06), from the businesses’ public listings. We have not visited them and do not rank them. Hours and services change, so call ahead.