The whitewater river run from the Eastern Boundary of Dinosaur National Monument to the confluence with Green River in Colorado is an exhilarating adventure for experienced paddlers. This section of the river is approximately 44 miles long and is rated as a class III-IV+ depending on the water level. The ideal streamflow range for this run is between 1,000 and 15,000 cfs, with the peak season being in May and June.

This section of the river is known for its challenging rapids, including Warm Springs Rapid, Skull Rapid, and Teepee Rapid. These rapids have steep drops, sharp turns, and large waves, which require precise navigation. Additionally, there are several obstacles along the river, including rocks, boulders, and strainers, which require constant attention.

Due to the rugged terrain and remote location, there are specific regulations for paddling on this section of the river. A permit is required to access the river, and all visitors must adhere to the Leave No Trace principles. Additionally, all boaters must be equipped with proper safety equipment, including a personal flotation device, helmet, and whistle.

In conclusion, the whitewater river run from the Eastern Boundary of Dinosaur National Monument to the confluence with Green River in Colorado is a challenging and rewarding experience for experienced paddlers. The ideal streamflow range is between 1,000 and 15,000 cfs, with a class III-IV+ rating. Visitors must adhere to specific regulations and safety measures to ensure a safe and enjoyable trip.