Highline Lake has a seasonal public swim beach within Highline Lake State Park near Mack.
Entry Daily vehicle pass: $10–$15; individual daily pass: $4.
Swim hours Park: daily, 5 a.m. to 10 p.m. Visitor centre: daily, 8 a.m. to 4 p.m.
Facilities Picnic areas, grills, tables, car park
Lifeguard No lifeguards on duty.
Dogs Not permitted on the Swim Beach; pets must not be left unattended elsewhere in the park.
Managed by Colorado Parks and Wildlife When you can swim Open to swimmers Closed to swimmers
Getting there Access the park via East entrance from 11.8 Road; Lakeview Swim Beach is 50–75 yards from the car park.
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Know before you go Stay within the buoyed swim-beach area. Do not swim at Mack Mesa Lake. Do not swim from sunset to sunrise. Children under 13 must be accompanied by an adult.Waterfall pool
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Questions about Highline Lake Can you swim at Highline Lake? Yes. Public swimming is allowed at the buoyed Lakeview Swim Beach from the second weekend of May through September. Swimming elsewhere, including Mack Mesa Lake, is not permitted.
Does it cost anything to swim at Highline Lake? Daily vehicle pass: $10–$15; individual daily pass: $4.
Are dogs allowed at Highline Lake? Not permitted on the Swim Beach; pets must not be left unattended elsewhere in the park.
Something changed at Highline Lake? Closures and new rules help everyone. Report a change Can I swim here?
Yes. Public swimming is allowed at the buoyed Lakeview Swim Beach from the second weekend of May through September. Swimming elsewhere, including Mack Mesa Lake, is not permitted.
Lakeview Swim Beach opens the second weekend of May and closes on the last day of September..
Booking Not needed
Hours Park: daily, 5 a.m. to 10 p.m. Visitor centre: daily, 8 a.m. to 4 p.m.
Entry Daily vehicle pass: $10–$15; individual daily pass: $4.
Lifeguard No lifeguards on duty. Official website Last checked 17 October 2026. Sources: Colorado Parks and Wildlife , Colorado Parks and Wildlife , Colorado Parks and Wildlife regulations .