Wide, and the most thickly populated portion of the state; here, therefore, the range is easily defined, but in the S., near the Rogue river, it merges apparently with the Cascade and the Sierra Nevada Mountains in a large complex group designated as the Klamath Mountains, lying partly in Oregon and partly in California, and extending from the northern extremity of the Sierra Nevada to the sea.
The Klamath Mountains separate topographically southern Oregon from northern California.
The Upper and the Lower Klamath lakes of Klamath county are noted for their scenic beauty.
Near the northwestern boundary of Klamath county is the famous Crater Lake, whose surface is 6239 ft.
The river fauna of the coast is of two distinct types: the type of the Columbia fauna in rivers north of the Rogue; and another type in the Klamath and its tributaries.
Typical of the Columbia river is Catastomus macrocheilus and of the Klamath, C. rimiculus.
Above Echo, with a reservoir of 1500 acres, was authorized in 1905 and was 851% finished in 1909; the Klamath project, to irrigate 181,000 acres in Klamath county, Oregon (about 145,000 acres) and Siskiyou and Modoc counties, California, by two canals from Upper Klamath Lake and by a storage dam (33 ft.
By the drainage system of the Klamath river.
Gold was discovered in the Rogue and Klamath rivers in the S.