San Juan
01. Sand Island to Mexican Hat(Upper San Juan)
| Difficulty | II |
| Length | 26.9 mi |
| Avg Gradient | n/a |
| Permit | A permit is required year-round. For trips launching April 15 - July 15, launches are allocated through a permit lottery with applications due on January 31. Permits for trips before the lottery season are available by reservation on December 1 the year prior and trips after the lottery season are available by reservation on March 16. |
| Gauge | San Juan River Near Bluff, Ut |
| Flow Rate as of 26 minutes | 570 cfsrunnable |
| Reach Info Last Updated | January 14, 2026 |
Projects
The Colorado River has been over-allocated and mismanaged for more than a century. Known as the hardest working river in the western US, the Colorado River flows from Rocky Mountain National Park in Colorado to Mexico where it gets sucked dry before reaching its mouth in the Sea of [...]Read More
River Description
The San Juan River is a great multi-day river trip and this section features one of the finest collections of petroglyphs in the southwest. This section is often run as a three day trip but can also be the start of a longer trip that continues on downstream past Mexican Hat to Clay Hills Crossing.
The put-in is at Sand Hills Crossing near Bluff, Utah approximately half a mile upstream of the Highway 191 Bridge. Sand Island has a ranger station, several campsites including group sites, drinking water, toilets, trash collection, and a wide boat ramp that provides enough space for a few trips to stage simultaneously.
The run begins in open desert country. The first six miles have several petroglyphs and moki steps carved in the sandstone as toeholds for Native Americans who traveled through these canyons in centuries past. Particularly impressive panels with an incredible density of petroglyphs are visible just upstream and downstream of Butler Wash. A short hike up the wash takes you to some smaller ruins and petroglyphs.
Six miles into the trip you reach the pullout for Riverhouse. It is about a 1/4 mile hike from the river to the base of the cliff. This ancestral puebloan ruin from the thirteenth century is built in a sandstone alcove overlooking the river. With 14 rooms this is the largest ruin along the river. It is visited by river runners and those on jeep tours. Given the heavy visitation, it is important to stay off the walls and out of the rooms so the structure remains undamaged for the benefit of future visitors. Less than a mile downstream of the Riverhouse is Barton's Trading Post. An interpretive sign marks the site which was established in the 1880s. The old trading post is at the base of San Juan Hill which was one of the last natural barriers encountered by Mormon pioneers who were searching for a route from Escalante to Bluff. Over the winter of 1879-1880, the pioneers sought to establish a settlement in the region to the east of
...River Features
Put In
Take Out
Trip Reports
Log in to add a reportWe ran this on Aug 10 to the 13th. The flow was 650 at the put in on day one and around 550 at the take out on day three. We were in a 18 foot cataraft gear boat and numerous duckies and small craft. The large boat hit sand bar several times along the way but pushing out each time was not to bad nor too long. The rapids were rocky but a combination of luck and pushing got us through each one without too much difficulty. Ledge rapid has a nice surf hole at this water level. Cottonwood camp which is normally a favorite was blocked by a sand bar. No mosquitos, no biting flies were encountered.
Flow at the start of the trip was 430 cfs, peaked at 1100 cfs the next day, and then slowly dropped to 700 cfs at by the end of the trip.
We ran this section at around 4,500 cfs. For fully-loaded open canoes, there are class II sneak routes, but the center wave trains and holes for the larger rapids, e.g., 8 ft., would be class III.