Established: May 22, 1945 (administrative agreement with the Bureau of Reclamation)
NPS Withdrawal: July 1, 1948
Wikipedia:
https://en.wikipedia.org/wiki/Whiskeytown%E2%80%93Shasta%E2%80%93Trinity_National_Recreation_Area
www.aflitt.com:
http://www.aflitt.com/WhistkeytownShastaTrinityNRA
The story here very much resembles the one at Flaming Gorge NRA, explains National Parks Traveler, "Under terms of an agreement inked with the Bureau of Reclamation, the National Park Service acquired administrative responsibility for Shasta Lake Recreation Area effective May 22, 1945. As with several other agreements to take over the recreation management of BuRec or Corps of Engineers reservoirs (including Millerton Lake Recreation Area, Shadow Mountain Recreation Area, Flaming Gorge Recreation Area, and Lake Texoma Recreation Area), this arrangement proved short-lived. After being a National Park System property for scarcely more than three years, Shasta Lake Recreation Area was transferred to the U.S. Forest Service effective July 1, 1948. "
The current Whiskeytown-Shasta-Trinity National Recreation Area was authorized by Congress on November 8, 1965, but when the new NRA was established on October 21, 1972, only the Whiskeytown Unit was placed under NPS management, the other two units remained under the administration of the Shasta-Trinity National Forest.
National Parks Traveler
California's Shasta Lake Recreation Area was a National Park System property for only three years before it was transferred to the U.S. Forest Service on July 1, 1948. The Forest Service now administers the lake as a component of Shasta-Trinity National Forest and Whiskeytown-Shasta-Trinity National Recreation Area.
On November 8, 1965, Congress put the National Park Service back into the picture by authorizing the Whiskeytown-Shasta-Trinity National Recreation Area. When the new NRA was finally established on October 21, 1972, it had three major components. The Park Service was given administrative responsibility for only one of the three units, the 42,503-acre Whiskeytown National Recreation Area (aka Whiskeytown Unit). The recreational centerpiece of the popular Whiskeytown NRA (853,812 visitors in 2009) is Whiskeytown Lake, a 3,200-acre reservoir with developed recreation facilities. This lake and other facilities and resources on the premises, including Gold Rush era structures, forested land, streams, and abundant wildlife, support a wide range of land- and water-based recreation.