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.
2017 Lake Tapps Reservoir Spring Refill Update and Open House Invitation. Cascade Water Alliance and the Lake Tapps Community Council announced today that the Lake Tapps Reservoir has reached recreation minimum pool levels (elevation 541.5 feet) a month ahead of the April 15 deadline as adopted by Cascade and the homeowners.