Potholes Reservoir, Washington - Reports, Lake Info, Pictures

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Description:

Potholes Reservoir is a Reservoir in Grant, Washington.

Have you fished Potholes Reservoir? Help your fellow anglers out by giving a fishing report, some fishing tips or general information about Potholes Reservoir.

Do you have a question about Potholes Reservoir, ask it here.

The Potholes Reservoir is part of the Columbia Basin Irrigation Project. It is formed by the O'Sullivan Dam and located in central Washington, in the United States. The reservoir is fed by water from Moses Lake, part of the Crab Creek basin.

The area features several lakes (typically 30-70 yards wide and 10-30 feet deep). These lakes, known as "potholes" were created through both natural and man made processes. The potholes were initially carved out during the Pleistocene by flood waters originating from Glacial Lake Missoula. Subsequent damming of the area by the Columbia Basin Project raised the water table high enough to allow these topographical depressions to become lakes.

Also known as:

* Moses Lake
* O'Sullivan Reservoir
* The Potholes Reservoir
* Mardon

Facilities and Parks:

Potholes State Park is a 640-acre camping park with 6,000 feet of freshwater shoreline on Potholes Reservoir. Potholes Reservoir is often confused with the Pothole Lakes themselves, which are a 30- to 45-minute drive from the park. The terrain is desert with freshwater marshes.

Park hours/updates:

The park is open year round for camping and day use.

Summer: 6:30 a.m. to dusk.
Winter: 8 a.m. to dusk.

Camping:
Check-in time, 2:30 p.m.
Check-out time, 1 p.m.
Quiet hours: 10 p.m. to 6:30 a.m.

Camping:

The park has 61 tent spaces, 60 utility spaces, one dump station, four restrooms (two ADA) and four showers (two ADA).

Any camping unit tent or RV may use either site type. However, any unit camped in a hookup site must pay the hookup-site fee. Maximum site length is 50 feet (may have limited availability).

There is no camping next to the reservoir.

To make a reservation, visit online or call (888) CAMPOUT or (888) 226-7688.

Boat Ramp:

Four boat ramps and 100 feet of dock are provided by the park.

Water levels in O'Sullivan Reservoir (Potholes Reservoir) fluctuate dramatically from spring to fall.

A daily watercraft launching permit for $7 is available at the park.

Directions to Lake:

Located 17 miles southwest of Moses Lake, Wash., just east of the Cascades in Adams County.

From I-90:
Take exit 179 at Moses Lake and follow signs to park.

From the south:
Take Hwy. 17 and turn west on Hwy. 262 (O'Sullivan Dam Rd.). Or take Hwy. 26 and turn east onto Hwy. 262 (O'Sullivan Dam Rd.). Each direction is well signed.

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