Something for everyone. Paved trails around the lakes for riders who don't want to get their $3K bikes dirty. Fire Roads further out for wannabees who think mountain biking means riding on dirt roads, and of course gnarly singletrack with awesome climbs, plenty of man made and natural stuntry.
Route 84 to Rt4 exit. Turn right at end of exit and follow. Resevoir is up on the left - can't miss it!
http://www.singletracks.com/item.php?c=1&i=2038