Summary
The ideal streamflow range for the Upper Green River is between 300-800 cfs, which typically occurs in the spring and early summer. The river is rated as a Class III-IV, which requires intermediate to advanced skills to navigate the rapids.
The segment mileage of the Upper Green River is approximately 30 miles, beginning at Green River Lakes and ending at the confluence with the New Fork River. The river features several notable rapids and obstacles, including the Big Piney Rapid, Honeymoon Rapid, and the Narrows. The Big Piney Rapid is a Class IV rapid with a steep drop and large waves, while Honeymoon Rapid is a narrow chute with a steep drop and tight turns.
There are specific regulations that apply to the Upper Green River. A permit is required for all commercial and private use of the river, and there are restrictions on group size and camping locations. Additionally, all boaters are required to carry a personal flotation device and safety equipment.
Overall, the Upper Green River offers challenging whitewater rapids and beautiful scenery for experienced paddlers. It is important to check the streamflow range and regulations before planning a trip to the area.