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