It is advisable to make sure you have enough fuel before going up the San Juan Arm since there are no marinas in this part of Lake Powell. The San Juan Arm starts at Mile 57 There are a couple of arches near the entrance of the San Juan Arm. The canyons along this first part are, In order Nasja. Cha, Trail, Wilson Creek, Desha and Deep Canyons

The Middle San Juan Arm continues to wind its way up the lake. The Great Bend is the predominate feature of this section of the lake. Boaters will traverse nine miles to cover less than one air mile. There are many good camping and hiking opportunities in this less travelled section of the lake. Through this section you will go by the Piute, Alcove, San Juan and Nokai Canyons; as well as Neskahi Wash and Zahn Bay.

The ending section of the San Juan Arm is lightly visited. Depending on lake levels, much may be inaccessible. Caution is urged when approaching this portion of the lake, especially at lower water levels due to silt build up. Remember to check you gas supply before going up the San Juan Arm since there are no marinas on the San Juan Arm. This section gives access to Copper, Castle Creek and Mikes Canyon; Piute Farms Wash; Rockhouse Gulch; Clay Hills Crossing.

The San Juan River Arm enters the main channel of Lake Powell at Mile 57 with a series of gooseneck bends. The canyons on the San Juan arm of Lake Powell are the most remote on the lake. Exploring this area requires a long boat ride from either Wahweap which is about 56 Miles or Bullfrog Marina which is about 40 miles.