The Whitewater River run in Montana, specifically the Irish Creek Headwaters to Mainstem segment, has a class rating of III-IV and a total length of approximately 4.7 miles. The ideal streamflow range for this segment of the river is between 500-1500 cubic feet per second (cfs), which typically occurs during the spring and early summer months.
Some of the notable rapids and obstacles on this segment include "Ledges," "Twisted Sister," and "S-Turn." It is important to note that this section of the river is recommended for experienced paddlers only, due to its technical nature and potential for hazardous conditions.
There are no specific regulations in place for this segment of the Whitewater River, but it is always recommended to practice Leave No Trace principles and respect private property along the riverbanks. As with any river activity, safety is paramount, and all paddlers should wear appropriate safety gear and have a solid understanding of river rescue techniques.
Sources consulted for this information include American Whitewater and Montana River Action.