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