The whitewater river run Rincon La Osa - Headwaters to Confluence with Los Pinos is a popular destination for kayakers and rafters in the state of Colorado. The ideal streamflow range for this river run is between 300-800 cfs, with the best conditions occurring in May and June. The class rating for this river is Class III-IV, which means it has moderate to difficult rapids with high waves and obstacles that require precise maneuvering.

The segment mileage for this river run is approximately 9 miles, starting at the headwaters and ending at the confluence with Los Pinos. The most notable rapids and obstacles on this run include the Rincon La Osa, a Class IV rapid with large waves and a tight chute, as well as the Pinball rapid, which features a series of boulders and drops that require quick navigation.

Specific regulations for this area include obtaining a permit from the San Juan National Forest office, wearing appropriate personal flotation devices, and following Leave No Trace principles to minimize impact on the environment. It is also important to note that this river run is not recommended for inexperienced paddlers due to the challenging rapids and obstacles.

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