For the first time since Sept. 19, 2022, low water levels in Folsom Lake have led to the enactment of a 5 mph speed limit for boaters. Since Oct. 1, the lake’s elevation level has fallen over 12 feet. As of Monday morning, the lake’s elevation stood at 398 feet and falling, according to data from the California Department of Water Resources. California State Parks is urging boaters to exercise “extreme caution” on the lake due to hazards, like rocks, being much closer to the surface level of the lake.