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Fishing regulations at Cow Lake, WA
Disclaimer: Always check local fishing regulations, water access rights and land ownership before fishing, regardless of any catches logged in that area by the Fishbrain community. Fishbrain has mapped millions of acres of government-owned land across the USA to help you identify potential fishing access, but you are responsible for ensuring compliance with all legal requirements.
Fishing regulations in Washington can change throughout the year. Make sure to check this page before fishing for the most up to date rules and regulations for the current season. Local regulations govern when you can fish, the max size of the fish you can keep, how many fish you can keep, and more.
Below you will see fishing regulations for catching Largemouth bass as of March 30th, 2026. To view regulations for a different fish species, please click on your preferred species in the drop-down.
Seasons
Bag limit
Memorable
Max size
Measurement
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. No size restriction/daily limit in rivers, streams, and beaver ponds.
For more information please see State of Washington Fishing Regulations
Micropterus nigricans
BOBCAT CREEK
- All game fish
- 4th Sat. in Apr.-Sept. 30
- Statewide min. size/daily limit.
COYOTE CREEK
- All game fish
- 4th Sat. in Apr.-Sept. 30
- Statewide min. size/daily limit.
BOBCAT CREEK PONDS
- All game fish
- 4th Sat. in Apr.- Sept. 30
- Statewide min. size/daily limit.
COYOTE CREEK PONDS
- All game fish
- 4th Sat. in Apr.- Sept. 30
- Statewide min. size/daily limit.
DEADMAN LAKE
- All game fish
- 4th Sat. in Apr.- Sept. 30
- Statewide min. size/daily limit.
HALFMOON LAKE
- All game fish
- 4th Sat. in Apr.- Sept. 30
- Statewide min. size/daily limit.
HAYS CREEK PONDS
- All game fish
- 4th Sat. in Apr.- Sept. 30
- Statewide min. size/daily limit.
HUTCHINSON LAKE
- All game fish
- 4th Sat. in Apr.- Sept. 30
- Statewide min. size/daily limit.
MCMANAMAN LAKE
- All game fish
- 4th Sat. in Apr.- Sept. 30
- Statewide min. size/daily limit.
MORGAN LAKE
- All game fish
- 4th Sat. in Apr.- Sept. 30
- Statewide min. size/daily limit.
QUAIL LAKE
- All species
- Motors prohibited. Fly fishing only.
- All game fish
- Year-round
- Catch and Release.
SHINER LAKE
- All game fish
- 4th Sat. in Apr.- Sept. 30
- Statewide min. size/daily limit.
SPRAGUE LAKE
those waters SW of the SW tip of Harper Island
- All species
- Oct. 1-Apr. 30
- CLOSED WATERS.
- Bluegill
- May 1-Sept. 30
- No min. size. Daily limit up to 25 bluegill and crappie combined.
- Crappie
- May 1-Sept. 30
- Min. size 9". Daily limit up to 25 bluegill and crappie combined.
- Other game fish
- May 1-Sept. 30
- Statewide min. size/daily limit.
the marsh at the SW end of the lake from the lakeside edge of the reeds, including Cow Creek, to Danekas Rd.
- All species
- CLOSED WATERS.
- Bluegill
- Year-round
- No min. size. Daily limit up to 25 bluegill and crappie combined.
- Crappie
- Year-round
- Min. size 9". Daily limit up to 25 bluegill and crappie combined.
- Other game fish
- Year-round
- Statewide min. size/daily limit.
CRAB CREEK
from mouth to Morgan Lake Rd. in Sec. 36
- All game fish
- Sat. before Memorial Day-Sept. 30
- Statewide min. size/daily limit.
from Morgan Lake Rd. in Sec. 36 to O'Sullivan Dam (including Marsh Units I and II impoundments)
- All species
- CLOSED WATERS.
from the confluence of the Moses Lake outlets to Sand Dunes Rd. including tributaries
- Bluegill
- Year-round
- Statewide min. size/daily limit. Except: Combined limit of bluegill and crappie is 25 fish.
- Crappie
- Year-round
- Statewide min. size/daily limit. Except: Min. length 9". Combined limit of crappie and bluegill is 25 fish.
- Yellow perch
- Year-round
- Statewide min. size/daily limit. Except: Daily limit is 25 fish.
- Other game fish
- Year-round
- Statewide min. size/daily limit for lakes, ponds, and reservoirs apply.
from the fountain buoy and shoreline markers of 150' downstream of the Alder Street fill to Grant County Rd. 7 NE
- Bluegill
- Year-round
- Min. size 8". Daily limit 5.
- Crappie
- Year-round
- Min. size 9". Daily limit 10.
- Yellow perch
- Year-round
- Daily limit 25.
- Other game fish
- Year-round
- Statewide min. size/daily limit for lakes, ponds, and reservoirs apply.
above Grant County Rd. 7 and all tributaries except Goose Creek in the city of Wilbur
- All game fish
- Year-round
- Statewide min. size/daily limit.
HAYS CREEK
- All game fish
- 4th Sat. in Apr.-Sept. 30
- Statewide min. size/daily limit.
PARA-JUVENILE LAKE
- All species
- Two-Pole not allowed.
- All game fish
- Year-round
- Statewide min. size/daily limit.
ROYAL LAKE AND ROYAL SLOUGH
including Marsh Unit 4 impoundments
- All species
- CLOSED WATERS.
TEAL LAKE, NORTH & SOUTH
- All game fish
- 4th Sat. in Apr.- Sept. 30
- Statewide min. size/daily limit.
PALOUSE RIVER
upstream of Palouse Falls, including tributaries (Washington waters only) except Rock Creek and Hog Canyon Creek CRC (652)
- All game fish
- Year-round
- Statewide min. size/daily limit.
FOURTH OF JULY LAKE
- All species
- Internal combustion motors prohibited.
- All game fish
- 1st Fri. after Thanksgiving- Mar. 31
- Statewide min. size/daily limit.
Regulations for
FAQ about Cow Lake fishing
- Largemouth bass - 12 members reported to have caught this fish
- Rainbow trout - 4 members reported to have caught this fish
- Common carp - 1 members reported to have caught this fish
- @BackwoodzTrale reported a nice Mirror carp.
- @msergeyev reported a nice Rainbow trout.
- @msergeyev reported a nice Common carp.
- @dannychavez8282 reported a nice Largemouth bass.
- @gnarboot reported a nice Largemouth bass.
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