Folsom Lake’s water level is dropping quickly. Here’s why
The water level in Folsom Lake has been dropping quickly in recent weeks. The level peaked in early June just shy of 456 feet, which is about 89% of Folsom’s total capacity and 110% of the average for that point in the year. Overall, that is more than double the amount of water that was stored last year…. A decreasing water level is to be expected throughout the summer months as water managers make releases needed to keep cool water flowing into the American River, keep the delta saltwater-free and export water to Southern California. But those that pay close attention to the water and releases at the reservoir may have noticed that water is leaving the lake a little quicker than normal. That is because additional releases are being made to make up for water shortages at Lake Shasta. But fortunately, Lake Oroville’s water level is high enough to support its water requirements.