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Muskrat Creek is a popular whitewater river run in Montana, known for its challenging rapids and scenic surroundings. The ideal streamflow range for Muskrat Creek is between 500 and 2000 cfs, although some experienced paddlers may be able to navigate the river at higher flow rates. The river is rated as Class III-IV, meaning that it includes challenging rapids with complex maneuvers required to avoid obstacles.

The segment mileage of Muskrat Creek is approximately 10 miles, starting from near the town of Ennis and flowing to its confluence with the Madison River. Along the way, paddlers can expect to encounter a variety of rapids, including drops, waves, and tight channels. Some of the most notable rapids on Muskrat Creek include the "Entrance Rapid," the "Jungle Rapid," and the "Cave Rapid."

There are specific regulations that apply to the Muskrat Creek area, including restrictions on the use of motorized boats and requirements for properly securing all equipment to prevent littering. Additionally, paddlers should be aware of potential hazards such as strainers and rocks in the river. It is recommended that paddlers have prior experience with whitewater rafting before attempting to navigate Muskrat Creek.