SACRAMENTO, Calif. – California State Parks urges visitors to exercise extreme caution while enjoying Lake Natoma, a subunit of Folsom Lake State Recreation Area, over the next several days. Significant water releases are expected from both Folsom and Nimbus Dams as the next storms approach the Sacramento area. As releases at Folsom Dam increase, water levels may raise rapidly resulting in strong currents that are unsafe for recreational activities on or around the lake shore. The strong currents may also prompt park officials to close parts of the lake starting Friday, December 30, and continuing until the water and currents recede.