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