D r. . Folsom Lake. Success at our Poker Ride! Thank you to everyone who attended. F ra n c is c o. East Natoma St. If you took any photos please post them in the comments. Folsom Lake Crossing. S o p h ia. Trail Map. Green Valley Rd. folsom lake trails map. There is no trail access or alternate route within Folsom Lake State Recreation Area. The Posted Order with map of the closure area can be found here. State Recreation Area. P a rk w a y. Main Body.