Recent winter storms have dropped historic amounts of snowfall in the Tahoe region. All of this snowfall has been depositing billions of gallons of water into the lake. Since the start of the month, Lake Tahoe has received 40 billion gallons of water and has risen by a foot.
The lake is now above the water level of normal operating conditions. If you were to pour Lake Tahoe out onto an area the size of California, the water would still be 14 inches (36 cm) deep.
All of this water is greatly improved the drought conditions for the state.