The Yampa River is a popular whitewater river run located in the state of Colorado. Segment 1 of the river spans 5.8 miles and is considered a Class III-IV rapids run. The ideal streamflow range for this segment is between 800-2,000 cfs, with the highest flows typically occurring in May and June due to snowmelt.

There are several notable rapids and obstacles on this section of the river, including the "Little Joe" rapid, which features a steep drop with a narrow channel and large boulders, as well as "Cable Rapid" and "Warm Springs Rapid," both of which require precise maneuvering around rocks and through narrow channels.

There are specific regulations in place for the Yampa River, including a permit system for commercial rafting companies and private boaters, as well as a ban on alcohol and glass containers. In addition, visitors are required to follow Leave No Trace principles to minimize their impact on the environment.

Overall, the Yampa River Segment 1 is a challenging and exciting whitewater run with unique rapids and stunning scenery. It is important to check current streamflow conditions and adhere to all regulations to ensure a safe and enjoyable experience.