The lake itself is created by Shasta Dam for long term water storage, flood control,   hydroelectricity.
The Shasta Dam was constructed between 1935 and 1945 and was filled three years later in 1948
Lake Shasta is the largest man-made reservoir in California with 365 Miles of shoreline (which is bigger than the shoreline of the San Francisco Bay)
The construction of Shasta Dam impounded three major north state rivers: The Pit, McCloud, and Sacramento, which are now known as the arms of the lake
Boat Access Camps
On Shore Camping
Things Lake Shasta has to offer
Things to see and do arount Lake Shasta
The Lake can be viewed from Antlers Bridge, O'Brien Rest Area, and the Pit River Bridge on Interstate 5. The three Shastas - Shasta Dam, Shasta Lake, and Mt. Shasta - can be seen from the Shasta Dam Vista Point.
Shasta Caverns are privately owned and tours are offered year-round
Self guided nature trails explore the natural and human history of Shasta Lake (The Hirz Bay Nature Trail located in the Hirz Bay Campground, and the Samwel Cave Trail located one mile south of the McCloud Bridge Campground)