the spring with some remaining rideable year-round. In the 2000s, transplanted ocean surfers began riding standing waves in a number of rivers in Alberta, Canada. Several shops in Calgary now stock boards specifically designed for river surfing. The standing wave under the 10th Street bridge in Calgary, has been a popular place for river surfing since its formation after the 2013 Alberta floods Since the mid 2010's, the Alberta River Surfing Association is spearheading transformative river wave projects in Southern Alberta, including a river park in downtown Calgary and Cochrane. The most popular area to river surf around Southern Alberta is in Kananaskis district (45 min from Calgary) at a spot called Mountain Wave. As of the early 2020's, projects of building two additional adjustable man-made river waves are well under way. United States Jackson Hole, Wyoming, is known as the most famous river surfing community in the US. The first documented cases of surfing on the Snake River occurred in the late 1970s. The wave known as Lunch Counter is a standing wave that churns during times of snow runoff in the months between May and August each year. This wave is highly active during these months and the area continues to grow as a surf destination. Pueblo, Colorado, has also become a river surfing city. A kayak park was in built 2005 near downtown Pueblo and locals have been surfing features 3, 4, and 7 ever since. Missoula, Montana, has surfing on Brennan's Wave, a man-made wave on the Clark Fork River. Boise, Idaho, has surfing at the Boise Whitewater Park near downtown Boise. The Boise River Park features an adjustable man-made wave on the Boise River. Because the waveshaper is adjustable, river surfing is available nearly year around. The Surfer's Journal article "The Surf God's of Idaho" says surfing Boise's river is like "pausing the ocean with a remote control and pressing rewind, but then surfing that backward-flowing wave in forward motion".' Bend, Oregon, has an adjustable man-made river wave in Bend White Water Rapid Park for all season surfing. New Zealand The world's first commercial river surfing operation was started by Jon Imhoof in 1989 . Trips are run on the Kawarau River near Queenstown. Bodyboards are used to run rapids and ride standing waves on the river. Tidal bores Tidal bores occur in relatively few locations worldwide, usually in areas with a large tidal range