The Cima Creek-Headwaters to Wilderness Boundary run is a popular whitewater river run in Arizona. The ideal streamflow range for this run is between 150-500 cfs. The run is rated as class III-IV, making it suitable for experienced kayakers and rafters. The segment mileage for this run is approximately 6 miles.

One of the notable rapids in this run is the Cima Falls, a class IV rapid. Other rapids include the Waterfall Rapid and the S-Turn Rapid. The run also features several tight and technical sections that require advanced paddling skills.

As for regulations, this run is located in the Tonto National Forest and requires a wilderness permit. The permit can be obtained through the forest service and is limited to a certain number of users per day. Additionally, all boaters must follow Leave No Trace principles and pack out all trash and waste.

Overall, the Cima Creek-Headwaters to Wilderness Boundary run is a thrilling and challenging whitewater experience for experienced paddlers. It is important to check the streamflow before attempting the run and to ensure compliance with all regulations to protect the natural environment.