The sixth-largest lake in the United States, which straddles California and Nevada, reached its natural rim after weekend storms dumped 12.5 billion gallons of water into the lake. A trickle is now flowing through the dam and into the Truckee River.
This is a huge milestone for a body of water that has flirted with record-low levels amid an ongoing drought.
Tahoe's water level reached 6,223.04 feet on Tuesday afternoon.
At the same time last year, the level was a full 1.5 feet lower. This was a disappointment in an El Niño year when storms expected to bring record-breaking snow and rain delivered only average precipitation, filling some reservoirs but making only a small dent in California's drought conditions overall.
This year is showing more promise as storms continue to batter the Sierra Nevada. Tahoe City, a town that sits on the lake's north shore, saw its wettest October in recorded history this year.
U.S. District Court Water Master Chad Blanchard says 9.04 inches of precipitation (rain and snow) were recorded in October while the average is 1.76.
"That was the largest October for precip since we had records back to 1910," Blanchard said.