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