The lake bed in 3-D: deep basin, drop-offs and shoreline. Shape estimated, not for navigation. Spot 1 (point drop-off) is open for everyone; the other 3 come with LakeScope PRO. Full screen
Potholes Reservoir
Grant County, Washington · about 15,000 acres (23.4 sq mi)
45°F water, calm this morning.
About Potholes Reservoir
Potholes Reservoir spreads over about 15,000 acres in Grant County, Washington. O'Sullivan Dam holds it back on the Crab Creek.
It stretches about 12.1 miles end to end and its shoreline adds up to about 60 miles. Its surface is about 1,040 ft above sea level. The deepest water is about 142 ft. The nearest town, Cascade Valley, is about 3.8 miles northeast. The closest city is Richland, about 47 miles away.
- Size
- About 15,000 acres (23.4 sq mi)
- Deepest
- About 142 ft
- Shoreline
- About 60 miles
- End to end
- About 12.1 miles
- Elevation
- About 1,040 ft
- Type
- Reservoir
- Dam
- O'Sullivan Dam, Crab Creek
- County
- Grant County
The lake from above
Best fishing times
Saturday Good
- 6:30 am – 8:45 amsunrise · wind 8 mph
- 3:15 pm – 5:00 pm bestsunset, moon overhead · wind 10 mph
Sunday Good
- 4:00 pm – 5:00 pm bestsunset, moon overhead · wind 7 mph
Based on sun and moon times and the wind forecast. A guide, not a promise. The app shows the whole week.
Fish in Potholes Reservoir
Potholes Reservoir holds largemouth bass, smallmouth bass, trout, walleye, crappie, yellow perch and bluegill and sunfish. With the surface at 45°F, the notes below say which of them should be biting.
- SlowLargemouth bass
Cold and sluggish. Fish slow and deep near steep banks.
- SlowSmallmouth bass
Cold. Slow presentations on deep rock.
- GoodTrout
Good range. Near the surface and along shorelines.
- GoodWalleye
Good cool-water bite, best at dusk and after dark.
- FairCrappie
Schooled on deeper brush piles. Fish small jigs slowly.
From today's water temperature and the season. A guide, not a promise.
Fishing spots
- 1Point drop-off
The bottom falls away fast off this point; fish rest deep and move up the slope to feed.
- 2
- 3
- 4
3 more spots with LakeScope PRO: fish, depth band, water temperature, best time and bait for each.
Picked from the shape of the lake bed. A guide, not a promise.
Water temperature
At the surface, seen .
Water level
No daily level reading for this lake.
Ice
Open water
Ice thickness is an estimate from air temperature, not a measurement. Check the ice yourself before going on it.
Weather and wind
Sunrise 6:58 am · sunset 4:24 pm · waxing crescent moon (lake time).
Towns and places to stay near Potholes Reservoir
- Cascade Valleyabout 3.8 mi northeast
- Moses Lakeabout 5 mi northeast
- Wardenabout 6.9 mi east
- Moses Lake Northabout 7.9 mi north
- Richlandnearest city, about 47 mi south
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Questions about Potholes Reservoir
What fish are in Potholes Reservoir?
Potholes Reservoir holds largemouth bass, smallmouth bass, trout, walleye, crappie, yellow perch and bluegill and sunfish. Check the state fish and wildlife agency for stocking and limits.
How deep is Potholes Reservoir?
About 142 ft at the deepest point. The 3-D view shows where the deep water is.
How big is Potholes Reservoir?
About 15,000 acres, with about 60 miles of shoreline.
What town is near Potholes Reservoir?
Cascade Valley is about 3.8 miles northeast; Moses Lake is about 5 miles northeast.
What is the water temperature at Potholes Reservoir today?
The surface was about 45°F on the latest clear reading. The page updates every day.
Potholes Reservoir on your phone
The whole week of bite times, lake alerts and the 3-D view, every morning.
