Real-Time Updated Flow Information
This page features real-time flow updates for the North, Middle and South Fork of the American rivers. Be sure to check the river flows before you go rafting. Bookmark this page and keep up with the latest because whitewater rafting is only exciting when there is enough water.
The North Fork American usually stops running by mid-June. The Middle and South Forks are controlled by upstream reservoir water releases. Optimal flows for whitewater rafting usually continue throughout the summer and fall months, often as late as October.
South Fork of the American (Beginner - Intermediate / Class III+):
Whitewater rafting on the South Fork is best from April through October. Consistent flows are controlled by the upstream reservoirs in the summertime with added runoff in the spring. Snow melt, precipitation, air temperature and reservoir releases can affect current river levels.
What do the numbers mean?
- 800-1200 CFS=Normal flows, usually associated with summer and fall. Plenty of Class II & III whitewater rafting and beautiful scenery. Great for first timers, groups and families, yet still fun for experienced boaters.
- 1200-3000 CFS=Medium - High flows. Challenging Class III+ whitewater rafting, exciting for first timers and veterans alike. Big waves and swift moving water.
- Above 3000 CFS=High flows. Challenging Class III+ whitewater rafting. Fast moving water, with powerful waves and long rapids.
Middle Fork of the American (Beginner - Intermediate / Class III - IV):
The Middle Fork usually runs from May through October. Consistent flows for whitewater rafting are controlled by the upstream reservoirs in the summertime with added runoff in the spring. Snow melt, precipitation, air temperature and reservoir releases can affect current river levels.
What do the numbers mean?
- 800 - 1100 CFS=Normal flows. Perfect for aggressive first timers or experienced whitewater paddlers. An excellent opportunity to experience Class IV whitewater rafting while enjoying the stunning beauty of the Middle Fork canyon.
- 1100 - 1700 CFS=Medium - High flows. More challenging Class IV whitewater, yet suitable for a wide range of skill levels.
- Above 1700 CFS=High flows. Class IV whitewater with additional challenges. May occur only a few weeks in spring.
North Fork of the American (Intermediate - Advanced / Class IV+):
The North Fork runs during April & May. Whitewater rafting can sometimes be enjoyed until mid-June. This river has no dams. The longevity of flows is dependent on the weather and snowpack. Snow melt, precipitation, air temperature and reservoir releases can affect current river levels. Proceed with caution when rafting at high flows.
What do the numbers mean?
- 600-1200 CFS=Lower flows. Class IV whitewater rafting. Great for veteran paddlers and for some athletic & adventurous first timer passengers.
- 1200-3000 CFS=Medium to high flows. Challenging Class IV whitewater rafting, exciting for veterans. Previous experience preferred and helpful. Bigger waves and swift moving water.
- Above 3000 CFS=High flows. Challenging Class IV whitewater Fast moving water, with powerful waves and rapids. Participants should be athletic individuals with previous experience.
Images courtesy of All-Outdoors California Whitewater Rafting
