The Seep Lakes unit is 4,877 acres of channeled scablands south of Potholes Reservoir. It is mostly rolling countryside with basalt outcroppings forming cliffs, mesas, box canyons and potholes. Many of the canyons and potholes are filled with water that has seeped from Potholes Reservoir to the north. A few lakes are actually wide spots in the Potholes Canal, which borders the west side. A long history of range fire has turned almost all of this area into grassland comprised mostly of Sandberg bluegrass and cheatgrass. A few protected pockets contain big sage and bluebunch wheatgrass or needle and thread grass. Washington ground squirrels are found here. Most of the lakes have steep and rocky shorelines with very little wetland habitat. WDFW maintains many miles of graveled access roads as well as several boat launches and parking areas primarily for public fishing.
Birds of Prey
How to Get Here
Map and Driving Directions
Access Site #1
Driving Directions From Moses Lake, Go south on SR 17, about two miles south of I-90 Exit 179, to county Road M SE. Turn south on Road M SE and proceed six miles to State Highway 262. Turn east (left) on Hwy. 262 and go 1/2 mile the gravel road on the south (right). This gravel road is known as the 'Seep Lakes Road' and it provides public access through the Seep Lakes Unit to the McManamon Road on the south end.
Parking/Restroom Information There are several parking areas in the Seep Lakes Unit. There are outhouses and boat ramps at the Heart Lake, Windmill Lake and Long Lake parking areas.