The Molalla River Seg B in Oregon is a popular destination for whitewater enthusiasts seeking an exciting and challenging run. The ideal streamflow range for this segment is between 800-1500 cfs, providing an optimal balance between fast-moving water and navigability. The segment is rated as Class III-IV, making it suitable for experienced paddlers with good technical skills.

The Molalla River Seg B covers a distance of approximately 5.5 miles and features several notable rapids and obstacles. These include the Funnel, a narrow chute that requires precise maneuvering; the Wall, a long and steep rapid with powerful hydraulics; and the S-Turn, which challenges paddlers with a tight and twisting channel.

To ensure the safety of all visitors, the Oregon State Parks system has established specific regulations for the Molalla River Seg B. Visitors are required to wear personal flotation devices (PFDs) at all times while on the water, and groups must have a designated trip leader with the necessary experience and skills to navigate the segment safely. Additionally, visitors are not allowed to disturb or damage the surrounding natural environment, including plants and wildlife.