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