The ideal streamflow range for this river is between 200 and 800 cfs, with the best time to paddle being in the spring and early summer when snowmelt and rainfall provide sufficient water levels.
The San Rafael River is rated as a Class II-IV river, with several sections offering technical rapids and obstacles. The upper section of the river is approximately 35 miles long and features several Class III and IV rapids, including Black Boxes and Satan's Gut. The lower section is around 25 miles long and offers a more mellow Class II-III run, with a few Class IV rapids such as Cable and Little Grand.
The San Rafael River is part of the San Rafael Swell Recreation Area and is managed by the Bureau of Land Management. Specific regulations to the area include obtaining a permit for overnight camping, packing out all trash and human waste, and respecting cultural and historical sites along the river. It is also recommended that paddlers have previous whitewater experience and carry appropriate safety equipment, as the river can be challenging and remote.
| Last Updated | 2025-06-28 |
| River Levels | 24400 cfs (12.3 ft) |
| Percent of Normal | 31% |
| Status | |
| Class Level | ii-iv |
| Elevation | ft |
| Streamflow Discharge | cfs |
| Gauge Height | ft |
| Reporting Streamgage | USGS 09315000 |