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