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Narrow Canyon. Colorado River. USGS Earth Science Photographic Archive digital file: hjk00597 Narrow Canyon (named by Powell on the 1869 Expedition) extends from Mille Crag Bend to the mouth to the Dirty Devil River. Cliffs in this section of the canyon include Rico Formation (Pennsylvanian to Permian) along river level and massive cliffs of Cedar Mesa Sandstone (Permian) that extend about 1,000 feet above the river. Today, Narrow Canyon is filled with water from Lake Powell except when lake levels drain to their typically lowest levels in the late fall. During low water, this section of the canyon is now heavily silted with sediment accumulating in the upstream end of the reservoir. |
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