The Whitewater River, located in New Mexico, is divided into several segments. The Headwaters to Eastern Boundary Private Land segment spans a distance of approximately 9.5 miles. The ideal streamflow range for this section is between 200-800 cfs. The class rating for this segment is Class III to IV, making it ideal for intermediate and advanced kayakers and rafters.

This segment of the Whitewater River is known for several rapids and obstacles, including the Eye of the Needle, the Boxcar, and the Rock Garden. The Eye of the Needle is a Class IV rapid that requires precise maneuvering to navigate through a narrow channel. The Boxcar is another Class IV rapid that requires expert boating skills to navigate through a steep drop. The Rock Garden is a Class III rapid with numerous boulders and rocks that require careful navigation.

Specific regulations exist for this area to ensure the safety of all boaters. All boaters must wear a personal flotation device (PFD) and a helmet at all times while on the river. Additionally, all boaters are required to carry a throw bag, whistle, and spare paddle. Boaters must obtain permission from private landowners to access the river at certain points.