Folsom Lake is filling up, which means the floodgates must open. On Thursday, Dec. 16, the U.S. Bureau of Reclamation released 35,000 acre-feet of water between 9 a.m. and 1 p.m. According to Louis Moore, deputy public affair officer, starting at 9 a.m. they released 15,000 acre feet and every hour after released an additional 5,000 Acre feet until 1 p.m. Throughout the rainy season, the U.S. Bureau of Reclamation will be lifting the floodgates periodically to keep up with capacity, what will be coming into the lake and how much will need to be release to flow down the river to the delta.