Clear Lake Clear Lake is the major recreation attraction in Lake county. The lake is more than 19 miles long and 9 miles wide at it's widest point and is the largest natural lake in the state of California and the oldest lake in North America. Average depth is 28 feet with water temperatures varying from the low 40's in winter to the mid 70's in summer. It has 100 miles of shoreline and is circled by 60 miles of scenic roads.
Water sports abound around the lake.
There are several public beaches, parks and launch ramps which are free to the public. Many private resorts line the lake and some will allow use of their facillities free or for a small fee. Fishing is permitted 24 hours a day but water skiing is not allowed between sunset and sunrise. Water skiers and swimmers alike enjoy the early morning as the lake is smooth as a billiard table at this time. Afternoon breezes can become quite strong and white caps can form any time of the year so small sailing craft should beware at this time of day.