The Whitewater River Run on Colorado River Segment 2 in Utah has an ideal streamflow range of 2,000-12,000 cubic feet per second (cfs), providing a thrilling and challenging experience for adventurous rafters. The segment is rated as class III-IV, with continuous rapids and drops, making it suitable for intermediate to advanced paddlers. The segment covers a distance of 11.5 miles, starting from the Onion Creek put-in and ending at the Rocky Rapid take-out.

The specific river rapids and obstacles that paddlers will encounter along the way include the Big Drop Rapid, a series of steep drops with a large pool at the end, and the Funnel Falls, a narrow chute leading into a pool with large boulders on either side. Paddlers will also encounter several other rapids and rocky sections of the river that require skillful navigation.

Specific regulations to the area include the requirement for all paddlers to wear a U.S. Coast Guard approved personal flotation device (PFD) at all times while on the river. Additionally, all rafts must have a bowline at the front of the boat, and all passengers must be properly secured to the raft.

Overall, the Whitewater River Run on Colorado River Segment 2 in Utah is a challenging and exciting adventure for experienced rafters, with specific regulations in place to ensure safety and enjoyment for all participants.