Success at our Poker Ride! Thank you to everyone who attended. P a rk w a y. State Recreation Area. Folsom Lake. F ra n c is c o. D r. There is no trail access or alternate route within Folsom Lake State Recreation Area. . S o p h ia. Green Valley Rd. folsom lake trails map. Main Body. Trail Map. East Natoma St. 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.