The Whitewater River Run is a popular expedition in Arizona that begins two miles upstream from the confluence with the Colorado River and ends at the confluence itself. The ideal streamflow range (cfs) for this run is between 8,000 and 25,000. The segment mileage of this run is approximately 30 miles long, and it is classified as a Class III-IV rapid, which means that the rapids are moderately difficult with waves up to four feet in height and some maneuvering required.

There are several specific rapids and obstacles along the Whitewater River Run that make it a thrilling experience for adventure seekers. These include the House Rock Rapid, the Badger Rapid, and the Hance Rapid. The House Rock Rapid is a Class IV rapid that requires precise maneuvering around a large boulder in the middle of the river. The Badger Rapid is a Class III rapid that has some tricky maneuvering around tight turns. The Hance Rapid is a Class IV rapid that has large waves and steep drops.

There are specific regulations to the area that visitors must follow to ensure their safety and the preservation of the environment. For example, visitors must obtain a permit from the National Park Service to enter the area. Additionally, visitors must pack out all trash and human waste to prevent pollution in the river and surrounding area.

In conclusion, the Whitewater River Run is an exciting adventure for experienced rafters and kayakers. The ideal streamflow range, class rating, specific river rapids/obstacles and regulations make it a challenging and rewarding experience for those who choose to explore this part of Arizona.