The Beaverhead River is a tributary of the Jefferson River in Montana and is a popular whitewater river run. The ideal streamflow range for the Beaverhead River is between 300-1,200 cfs. The river is rated as class II-III, making it suitable for intermediate level paddlers. The segment mileage for the Beaverhead River is 69 miles, making it a great option for a multi-day trip.

One of the most notable rapids on the Beaverhead River is the Grasshopper Rapid, which is a class III rapid located near the town of Twin Bridges. This rapid features a narrow channel with large boulders, creating a challenging and exciting run for paddlers. Other notable rapids on the Beaverhead River include the Chandler Rapids and the Beaver Lodge Rapids.

There are specific regulations that apply to the Beaverhead River, including a limit on the number of commercial outfitters and the requirement for all boaters to carry a Type IV throwable device. Additionally, the Montana Fish, Wildlife & Parks Department requires all boaters to have a valid Aquatic Invasive Species Prevention Pass before launching on the river.

Overall, the Beaverhead River is a great option for intermediate level paddlers looking for a multi-day trip with exciting rapids and beautiful scenery. It's important to follow all regulations and safety guidelines to ensure a safe and enjoyable experience on the river.