American River Whitewater Rafting River Flows
To ensure you can go paddling on a particular day, be sure to check the Dreamflows chart (below) for recreational flows, which ensure enough water for whitewater paddlers. These flows are measured in cubic feet per second (cfs), which indicates the amount of water which passes through a single point in the river. In general, the South Fork of the American River is runnable above 800 cfs. The river becomes extremely difficult above 5,000 cfs, and it is considered to be Class IV above 6,000 cfs. As the water levels increase, boaters should be more experienced and should use extreme caution.