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The San Juan River is a popular whitewater destination in Utah, offering a variety of challenges for kayakers, rafters, and other river enthusiasts. The ideal streamflow range for the San Juan River is between 500 and 2,000 cubic feet per second (cfs), with higher flows providing more challenging rapids and lower flows creating more technical sections.

The San Juan River is rated as a Class II to Class III river, with some challenging rapids and obstacles to navigate. The segment mileage varies depending on the route chosen, with popular options ranging from 27 miles to 84 miles. Some of the specific rapids and obstacles on the San Juan River include Government Rapid, Eight-Foot Rapid, and Ross Rapid.

There are specific regulations in place for the San Juan River, including the need for a permit to access the river. Additionally, there are restrictions on group size, camping locations, and fire regulations to protect the natural environment and ensure a safe and enjoyable experience for all visitors.

Overall, the San Juan River offers a unique and challenging whitewater experience for those seeking an adventure in Utah's scenic wilderness. It is important to plan carefully and follow all regulations to ensure a safe and responsible trip.