The 11.5-mile run on the Whitewater River from Rio Nutritas to Stewart Meadows in Colorado is a popular destination for whitewater enthusiasts. The ideal streamflow range for this section of the river is between 800-1500 cfs, although it can be run at higher flows with experienced paddlers.

The class rating for this section of the river is class III-IV, with several challenging obstacles and rapids, including Nutritas Rapid, Pinball Rapids, and Sledgehammer Rapid. Some of these rapids require precise navigation and have potential hazards such as undercut rocks, strainers, and hydraulics.

In terms of regulations, the Colorado Parks and Wildlife require a valid Colorado boating registration for all motorboats. Additionally, non-motorized watercraft such as kayaks and rafts must carry a personal flotation device for each occupant and a sound-producing device.

It is also recommended that paddlers have proper safety equipment and experience before attempting this portion of the river. The segment mileage of this run is 11.5 miles, with beautiful scenery and wildlife along the way. Overall, the Rio Nutritas To Stewart Meadows run on the Whitewater River provides a challenging and rewarding adventure for experienced whitewater enthusiasts.