The Whitewater River run from Confluence with Snowslide Creek to West Boundary of Patented Mining Claim Just Inside the Caribou NF Boundary is a Class III to IV river and is suitable for intermediate to advanced kayakers and rafters. The ideal streamflow range for this run is between 800 and 1200 cfs. This segment covers a distance of approximately 6 miles and features several rapids, including "The Ledges," "Eye of the Needle," and "The Wall," which are all Class IV rapids. The run also features several Class III rapids, including "The Chute," "Widowmaker," and "S-Turn."

One of the main obstacles on this run is a large boulder located in the middle of the river, just downstream of "The Wall" rapid. This boulder creates a dangerous hole that can easily flip a raft or kayak. It is important to stay to the left of this obstacle to avoid any potential hazards.

In terms of regulations, boaters are required to obtain a permit from the Caribou-Targhee National Forest Service before embarking on this run. Additionally, boaters must adhere to Leave No Trace principles and pack out all trash and waste. Finally, boaters must respect private property rights and avoid trespassing on any private land adjacent to the river.

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