Yaak Falls is a popular whitewater river run located in Troy, Montana. This segment is approximately 6 miles long, running from Sec. 4, T33N, R33W to the downstream to BPA Powerline. The ideal streamflow range for this segment is between 800 and 2000 cfs. This range provides moderate to high level rapids for experienced kayakers and rafters.

The Yaak Falls segment is rated as Class III to IV, making it a challenging run for intermediate to advanced paddlers. The rapids in this segment include Yaak Falls, which is a Class IV rapid, and several Class III rapids such as the "Pin Ball" and "Punch Bowl."

While the Yaak Falls segment is an exciting and challenging run, there are specific regulations that paddlers must follow. These include having a personal flotation device (PFD) for each person on board, a whistle, and a boat that is in good condition and appropriate for the river conditions. Paddlers should also avoid littering and respect private property along the river.

In summary, the Yaak Falls segment is a Class III to IV whitewater run that spans approximately 6 miles. The ideal streamflow range is between 800 and 2000 cfs, and paddlers must follow specific regulations to ensure their safety and respect the environment.