Lake Tahoe is full. As of Thursday, April 20, the lake’s surface elevation was 6,227.69 feet — almost 5 feet above its natural rim. U.S. Water Master Chad Blanchard said his office has been spilling water from Lake Tahoe since Feb. 22 in an effort to prevent the lake’s level from rising too high. It’s the first time since 2006 that excess water has been spilled from the lake.