Hazard Warning: Hazard information may be user-submitted and unverified. Conditions change frequently. Always scout rapids and obstacles yourself.
Rapid UT Class IV+

Entrance to Second (Lower) Black Box

San Rafael - 02. Bridge at San Rafael Campground to I-70 (Black Boxes 1 & 2) (UT)

Gauge Conditions
Runnable: 375.0 – 900.0 CFS
Photo
Entrance to Second (Lower) Black Box
Photo courtesy of American Whitewater
Description
The entrance to the Second Black Box is a technical and consequential Class IV+ rapid, featuring a narrow, boulder-choked channel with powerful hydraulics and limited route-finding options. Paddlers must navigate a series of tight, angled drops between large rocks, with serious pin and entrapment hazards that demand precise boat positioning and expert-level water reading skills. A significant undercut wall on river right and potential wood hazards make this section extremely committing, requiring full commitment and zero margin for error.
Location
Type
Rapid
Difficulty
Class IV+
Mile Marker
27.8 mi
Directions
View Full Run
02. Bridge at San Rafael Campground to I-70 (Black Boxes 1 & 2)
San Rafael
III-V 43.0 mi
Current Conditions
5-Day Forecast
Whitewater data from
American Whitewater