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