The Whitewater River Run from Dirty Creek to Elk River and Gravelly Range Road #290, Sec. 15 T11S R2W in Montana is a popular destination for whitewater enthusiasts. The ideal streamflow range for this river is between 500 and 1500 cubic feet per second (cfs), with the peak season being in late May to early June.

This section of the river is rated as a class III-IV, with a total segment mileage of approximately 16 miles. Some of the specific river rapids and obstacles include Double Drop, Tight Squeeze, The Chute, and Horseshoe Bend.

There are specific regulations that apply to this area. For instance, all boaters must wear a personal flotation device (PFD) at all times while on the water. Additionally, there are restrictions on the use of motorized watercraft.

In conclusion, the Whitewater River Run from Dirty Creek to Elk River and Gravelly Range Road #290, Sec. 15 T11S R2W in Montana is an exciting whitewater destination. The ideal streamflow range, class rating, segment mileage, specific river rapids/obstacles, and specific regulations to the area make it an unforgettable adventure for experienced whitewater enthusiasts.