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The lake is currently closed to all boating. Hand launched vessels​ and motorized boats included.​​

Barr Lake offers 1,950 surface acres of quiet, calm water. The lake is divided into northern and southern sections by a line of buoys. The southern half of the lake is a dedicated wildlife refuge. To protect wildlife and wildlife habitat, boating and fishing are not permitted south of the buoy line. 

The northern half of the lake is open to several water sports including boating, canoeing and sailboarding. Only sailboats, hand-propelled craft, and boats with electric trolling motors or gasoline motors of 10 horsepower or less are permitted on Barr Lake. 

A boat ramp (recently lengthened to accommodate a longer boating season) is located adjacent to the north parking lot. For the safety of park visitors, swimming, wading and diving are prohibited.

Barr Lake is owned by Farmers Reservoir and Irrigation Company and is used as an irrigation storage. Because of this, Barr Lake's water levels can fluctuate throughout the summer months. Barr Lake is a relatively shallow body of water with high nutrient levels and because of this, Barr Lake often experiences blue green algae blooms during the hot summer months from mid July through September. Please check the Barr Lake conditions page for the latest water conditions. You may also contact the park office for current conditions at 303-659-6005.

View Colorado boat registration and regulations​​.