Moses Lake is a large natural lake covering roughly 6,800 surface acres and 120 miles of shoreline. It consists of three main arms, which are over 18 miles long and up to a mile wide. A variety of fish species call the lake home.

Moses Lake is a rather shallow lake, measuring only 30 feet at the deepest point. The lake averages 18 feet deep when full. There is ample access to the lake, and many activities can be enjoyed on or near the lake. It has an excellent reputation for fishing and duck and pheasant hunting, as well as swimming, boating, and skiing.

Access to the lake is available from I-90. State Highway 17 provides access to the east and north sides of the lake. The upper end of the lake has no services or facilities, but marinas, resorts, campgrounds, etc. are available in the city of Moses Lake.