The Tunnel 1 to Golden Whitewater Park river run in Colorado is a fun and challenging Class III-IV stretch of water. The obstacles on this section include the Entrance Rapid, the Castle Rock Rapid, and Supermax Rapid, which all require precise maneuvering. The best time to float this section is during the late spring and early summer, when water levels range from 700-1,200 CFS. Floaters should be experienced and have proper gear, as the rapids are technical and require good control.

Weather today, A slight chance of rain and snow showers before 7am, then a slight chance of snow showers between 7am and 11am. Mostly sunny, with a high near 57. Very windy, with a west wind 32 to 39 mph, with gusts as high as 60 mph. Chance of precipitation is 20%.