Most life was wiped out, and the creatures that did survive huddled in small pockets of open water, where hot springs continued to bubble up. This was Snowball Earth â a deep freeze that began around 715 million years ago and held Earth in its icy grip for a good 120 million years. There are no other comparable glacial periods on Earth.
Lake Barkley Lake Levels. The lake's level is fluctuated from summer to winter for flood control purposes. Summer pool (359 ft. sea level) is normally reached by May 1. The water level begins dropping gradually on July 1, and winter pool (354 ft.) is reached by December 1.
See map at end of report. Important information; warnings, and road conditions: Both the East-side Reservoir Road (Forest Road #38) and the West-side Reservoir Road (Forest Road #895) are in decent condition and are open to Spotted Bear Ranger Station and Gorge Creek Trailhead, respectively.1 Miner Creek 82 Bruce Creek 83 Spotted Bear River 5/23/14 Cleared from Beaver Creek Trailhead to Dean Creek. 83A Lower Spotted Bear River 5/23/14 Cleared to junction with #84 (from Spotted Bear Ranger Station) and cleared from Spotted Bear River ford to Beaver Creek.