From the Northern Colorado Business Report:
Parks that have already closed ramps include: Barr Lake, Bonny Lake, Crawford, Elkhead Reservoir, Harvey Gap, Highline Lake, Lathrop, Mancos, John Martin Reservoir, North Sterling, Paonia, Pearl Lake, Ridgway, Rifle Gap, San Luis, Stagecoach, Sweitzer and Vega. Steamboat Lake State Park closed its ramps Friday. State parks with ramps closing Dec. 1 include Boyd Lake, Chatfield, Cherry Creek, Eleven Mile, Jackson Lake, Navajo, Spinney Mountain and Trinidad Lake. However, those ramps could close earlier if the lakes freeze.