The Big Sandy River, located in Arizona, is a popular whitewater river run with a recommended streamflow range of 400-2,500 cfs. The river is rated as a Class III-IV, making it suitable for intermediate to advanced paddlers. The segment mileage of the river run is approximately 14.5 miles, with rapids and obstacles such as "The Funnel," "Graveyard," and "Chute the Moon."

There are specific regulations for the Big Sandy River run, including a requirement to obtain a permit through the Bureau of Land Management to access the river. The permit system helps to limit the number of paddlers on the river at any given time. Additionally, there are restrictions on camping and fires along the river banks to protect the natural resources of the area.

Overall, the Big Sandy River run is a thrilling experience for experienced paddlers looking for a challenging Class III-IV whitewater run. It's important to check the streamflow range before setting out, as water levels can vary greatly depending on weather conditions.