<P> Upper Klamath Lake ( sometimes called Klamath Lake ) ( Klamath : ? ews , `` lake '' ) is a large , shallow freshwater lake east of the Cascade Range in south - central Oregon in the United States . The largest body of fresh water by surface area in Oregon , it is approximately 25 miles ( 40 km ) long and 8 miles ( 13 km ) wide and extends northwest from the city of Klamath Falls . It sits at an average elevation of 4,140 feet ( 1,260 m ) . </P>
<P> Upper Klamath Lake ( sometimes called Klamath Lake ) ( Klamath : ? ews , `` lake '' ) is a large , shallow freshwater lake east of the Cascade Range in south - central Oregon in the United States . The largest body of fresh water by surface area in Oregon , it is approximately 25 miles ( 40 km ) long and 8 miles ( 13 km ) wide and extends northwest from the city of Klamath Falls . It sits at an average elevation of 4,140 feet ( 1,260 m ) . </P>
what is the largest natural body of water in oregon
what is the largest natural body of water in oregon
Upper Klamath Lake ( sometimes called Klamath Lake )
Upper Klamath Lake ( sometimes called Klamath Lake )