The East Lake Resource Conservation District was formed by the consolidation of the Middletown RCD and the Lower Lake RCD in the late 1950's. The East Lake RCDis predominately composed of sedimentary rocks and sedimentary alluvium. Soils of high agricultural capabilities, or prime farmland, occur mostly in the level valley areas.
Native vegetation ranges from timber to brushlands with limited riparian corridors.
The topography ranges from 800-ft. The drainage of Lake County flows into two major watersheds in Northern California. The Clear Lake Basin flows southeast into the California Bay-Delta drainage network, and the Upper Mainstream Eel River flows northwest to the Pacific Ocean. Annual average rainfall ranges from 22 to 80 inches. Hot dry summers with clear skies and clean air is the norm.