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For the kokanee herePiscifun Carbon XT ultralight spinning reel25% OFFSale $59.99 $79.99
Lake Roosevelt 92 mi
Photo: Ken Lund, CC BY-SA 2.0 
Palmer Lake 10 mi
Photo: U.S. Forest Service- Pacific Northwest Region, Public domain 
Methow River 50 mi
Photo: Sandy Brown Jensen, CC BY 2.0 
Rufus Woods Lake 60 mi
Photo: Jan Helebrant, CC0 1.0
Washington lakes and reservoirs
Pick for kokaneePiscifun Carbon X ultralight spinning reel28% OFFSale $57.99 $79.99
Osoyoos Lake Fishing
A 2,062-acre Washington lake in Okanogan County.
Pick for kokaneePiscifun Carbon X ultralight spinning reel28% OFFSale $57.99 Photo: Pat Strosahl, CC BY-SA 2.0
Okanogan County
Getting to know Osoyoos Lake
In Okanogan County, Osoyoos Lake measures 2,062 surface acres by the WDFW figure. The WDFW layer puts its surface near 916 feet above sea level. Groceries and fuel are closest in Oroville, roughly 2 miles out. WDFW files it as mixed-species water managed with a warmwater emphasis. The county lies inside WDFW Region 2.
Neither WDFW nor State Parks lists a ramp on it. WDFW maps 2 shore fishing sites as well. Statewide rules change here through 6 Special Rules. WDFW grades access from shore as good.
2,062surface acres
916 ftelevation
0launches
2shore sites
WDFW Fish Washington lake layers on geodataservices.wdfw.wa.gov (surface acres, elevation, management emphasis, shoreline access, species), USGS NHD outlines, Census 2023 places, retrieved October 31, 2026.
Species
Catches anglers expect on Osoyoos Lake
Fish linked to Osoyoos Lake in WDFW data:
WDFW Fish Washington species layers (presence, not abundance), WDFW records and the 2026 trout plant report; retrieved October 31, 2026.
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Boat ramps around Osoyoos Lake
Osoyoos Lake has no launch in the layers we use; nearby options follow.
WDFW shore sites on Osoyoos Lake
- Lake Osoyoos shore accessshore fishing site, 500+ meters of shore fishing, ADA access available
- Lake Osoyoos shore access near Orovilleshore fishing site, 200+ meters of shore fishing
Ramps within easy towing of Osoyoos Lake
- Blue Lake boat launch (north)Blue Lake, 6 miles southwest
- Wannacut Lake boat launchWannacut Lake, 8 miles southwest
- Spectacle Lake (west) boat launchSpectacle Lake, 13 miles southwest
- Whitestone Lake boat launchWhitestone Lake, 13 miles south
WDFW Water Access Sites and Shore Fishing Sites layers (geodataservices.wdfw.wa.gov) and the Washington State Parks boat launch layer, retrieved October 31, 2026. A Discover Pass is needed to park at WDFW access sites and State Parks launches.
Level
Latest level on Osoyoos Lake
| USGS gauge | Latest reading | Time (ET) |
|---|---|---|
| Osoyoos Lake Near Oroville, Wa | 911.12 ft lake elevation | Nov 2 10:00 pm |
US Geological Survey provisional data, retrieved Nov 2, 2026 10:33 pm ET. Provisional readings can be revised.
Every level shown for Osoyoos Lake carries its agency and date.
Limits
Washington limits for Osoyoos Lake
| Species | Daily limit and size | Season |
|---|---|---|
| Largemouth Bass | No min. size in lakes, ponds, and reservoirs. Only largemouth bass less than 12" may be retained, except 1 over 17" may be retained. Daily limit 5. | Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31 |
| Smallmouth Bass | No min. size in lakes, ponds, and reservoirs. Only 1 smallmouth bass over 14" may be retained. Daily limit 10. | Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31 |
| Walleye | Min. size 12" in lakes, ponds, and reservoirs. Daily limit 8. Only 1 over 22" may be retained. May be caught, retained, and released alive from a livewell until daily limit is in possession. | Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31 |
| Channel Catfish | No min. size in lakes, ponds, and reservoirs. Daily limit 5. | Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31 |
| Burbot (Freshwater Ling) | No min. size. Daily limit 5. | Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31 (p.23 general rule for |
| Crappie, Northern Pikeminnow, Peamouth Chub, Perch, Suckers, Sunfish, | No min. size. No daily limit. | Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31 |
| Grass Carp | Closed unless otherwise listed in Special Rules. | Closed |
| Kokanee | No min. size. Daily limit 10. When fishing with bait, all kokanee that are lawful to possess and are equal to or greater than the minimum size are counted as part of the daily limit whether kept or released. | Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31 (p.23 general rule for |
| Tiger Muskellunge (Tiger Muskie) | Min. size 50". Daily limit 1. | Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31 (p.23 general rule for |
| Whitefish | No min. size. Daily limit 15. | Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31 (p.23 general rule for |
| Steelhead | Release all wild steelhead. Min. size 20". Daily limit 2. Open during salmon or game fish seasons unless as otherwise listed. | Open during salmon or game fish seasons unless as otherwise listed |
| Brown Trout, Cutthroat Trout, Rainbow Trout, Golden Trout, Tiger Trout | In lakes, ponds, and reservoirs: No min. size. Daily limit 5. | Year-round (statewide lake season, p.23) |
| Trout (combined rivers and lakes same day) | The combined daily limit for an angler that fishes in both rivers and lakes on the same day is 5 trout, no more than 2 may be from rivers. | see the pamphlet |
| Lake Trout | No min. size. No daily limit. | Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31 (p.23 general rule for |
| Eastern Brook Trout (EBT) | No min. size. No daily limit. | Lakes, ponds, and reservoirs: year-round; rivers, streams and beaver ponds: Sat. before Memorial Day through Oct. 31 (p.23 general rule for |
| Dolly Varden/Bull Trout | Closed unless otherwise listed in Special Rules. | Closed |
Start with the statewide table for Osoyoos Lake; any Special Rule overrides it.
Rules that differ on Osoyoos Lake
| Water as printed | Species | Rule and season |
|---|---|---|
| Osoyoos Lake | All species | Columbia River Salmon and Steelhead Endorsement (CRSSE) required (ages 15 and older). |
| Osoyoos Lake | Smallmouth bass | No min. size. Daily limit 15. Only 1 over 14" may be retained. (Year-round) |
| Osoyoos Lake | Largemouth bass | No min. size. Daily limit 10. Max. size 12", except 1 over 17" may be retained. (Year-round) |
| Osoyoos Lake | Channel catfish | No min. size. Daily limit 10. (Year-round) |
| Osoyoos Lake | Walleye | No min. size. Daily limit 16. Only 1 over 22" may be retained. (Year-round) |
| Osoyoos Lake | Other game fish | Statewide min. size/daily limit. (Year-round) |
Special Rules as printed in the 2026-2027 Washington Sport Fishing Rules (WDFW pamphlet, in effect July 1, 2026 to June 30, 2027), pamphlet page 97 (pamphlet PDF), read on eRegulations October 31, 2026.
Anglers 16 and older need a Washington Freshwater license ($39.95 resident, $115.85 nonresident for 2026-27) or a Combination license; salmon, steelhead and sturgeon also take a catch record card.
Limits and seasons as printed in the 2026-2027 Washington Sport Fishing Rules (WDFW pamphlet, in effect July 1, 2026 to June 30, 2027), PDF page 27 (pamphlet PDF; eRegulations statewide freshwater page), read October 31, 2026.
Compare
Lakes around Osoyoos Lake, side by side
The largest lake listed alongside is Wannacut Lake at 429 acres.
| Lake | Distance | Acres | Elevation | Launches | 2026 plants |
|---|---|---|---|---|---|
| Osoyoos Lake | 2,062 | 916 ft | 0 | 0 | |
| Silver Nail Lake | 2 miles northwest | 5.8 | 1,012 ft | 0 | 0 |
| Blue Lake (Okanogan County) near Oroville | 5 miles southwest | 119 | 1,779 ft | 1 | 0 |
| Wannacut Lake | 7 miles southwest | 429 | 1,858 ft | 1 | 0 |
| Summit Lake (Okanogan County) | 8 miles southeast | 16 | 4,256 ft | 0 | 0 |
| Sidley Lake | 10 miles east | 107 | 3,683 ft | 1 | 1 |
WDFW Fish Washington lake layers, access layers and the 2026 trout plant report; retrieved October 31, 2026.
Nearby
A few miles from Osoyoos Lake
Nearby lakes worth a look from Osoyoos Lake
- Silver Nail Lake2 miles northwest
- Blue Lake (Okanogan County) near Oroville5 miles southwest
- Wannacut Lake7 miles southwest
- Summit Lake (Okanogan County)8 miles southeast
- Sidley Lake10 miles east
Tackle and bait counters serving Osoyoos Lake
- Cascade Outfittersbait and tackle shop, Omak
Paid fishing guides around Osoyoos Lake
- North Cascade Fly Fishingcharter, Winthrop, (509) 996-3731
- Reel Lentless Guide Servicecharter, Brewster, (509) 449-0843
Where to book a room for Osoyoos Lake
- Oroville2 miles
- Tonasket19 miles
- Omak39 miles
County guides for Osoyoos Lake
- Okanogan Countyseat: Okanogan
Piscifun
Piscifun gear a Cascades angler could bring to Osoyoos Lake
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Photos
Lakes, rivers and sound close to Osoyoos Lake, pictured
Photo: Ken Lund, CC BY-SA 2.0
Photo: U.S. Forest Service- Pacific Northwest Region, Public domain
Photo: Sandy Brown Jensen, CC BY 2.0
Photo: Jan Helebrant, CC0 1.0
Answers
What people planning Osoyoos Lake want to know
What part of the Evergreen State holds Osoyoos Lake?
You will find it in Okanogan County, about 2 miles from Oroville.
How much surface does Osoyoos Lake spread across in the WDFW layer?
About 2,062 surface acres.
Which listed launch sits closest to Osoyoos Lake?
None appears in the access layers; see the ramps nearby.
What fish does WDFW list for Osoyoos Lake?
On the list: kokanee, smallmouth bass and yellow perch.
What daily limit applies on Osoyoos Lake?
Brown Trout, Cutthroat Trout, Rainbow Trout, Golden Trout, Tiger Trout: In lakes, ponds, and reservoirs: No min. size. Daily limit 5.; Year-round (statewide lake season, p.23). Its own pamphlet lines are in the limits band.
Can a visitor from Idaho fish Osoyoos Lake?
Anglers 16 and older need a Washington Freshwater license ($39.95 resident, $115.85 nonresident for 2026-27) or a Combination license; salmon, steelhead and sturgeon also take a catch record card.
Does Osoyoos Lake get hatchery trout?
The plant report has nothing for it in 2026 to date.
Is there a tackle store on the way to Osoyoos Lake?
Cascade Outfitters in the same county is the first shop on our Washington list.
What was the newest reading at Osoyoos Lake?
See the level panel (USGS).
Save a free Saturday for Osoyoos Lake
Fees, limits and catch record card rules are on the license page.