The Headwaters of Horse Spring to the Confluence of Horse Spring and Horse Canyon stretch of the Whitewater River in New Mexico is a popular destination for kayakers and rafters. The ideal streamflow range for this section of the river is between 300 and 800 cubic feet per second (cfs), which ensures a challenging and thrilling experience for experienced rafters.

This section of the river is classified as Class III to IV, which means that it features moderate to difficult rapids and obstacles, such as boulders and small drops. The segment mileage for this section of the river is approximately 9 miles, which can take anywhere from 3 to 6 hours to complete depending on the water flow.

There are specific rapids and obstacles in this section of the river, including the Horse Canyon rapid, which is a Class IV rapid that features a steep drop. Other notable rapids include the Rockpile rapid and the Screaming Left Turn rapid.

There are specific regulations to the area, such as the requirement for a permit to launch a raft or kayak. Additionally, visitors must follow Leave No Trace principles and pack out all trash and waste. There are also restrictions on camping in certain areas along the river.

Overall, the Headwaters of Horse Spring to the Confluence of Horse Spring and Horse Canyon stretch of the Whitewater River in New Mexico is a challenging and exhilarating whitewater run that requires experience and caution.