Thirty-foot tall Lake Powell sediment banks cling to the canyon wall along Davis Gulch in the Escalante Canyons of Utah. When the reservoir first topped off in 1983, the surface of the water was 90 feet above the level of the streambed seen here. The reservoir's white "bathtub ring" can be seen climbing halfway up the wall at the top center of the image revealing how far underwater this location was when the reservoir was last full in 1999. As flash floods poured down into the stagnant waters of the reservoir at this location during the time period when this canyon was flooded by the reservoir from the late 60s until 1999, the sediments in the flood waters settled onto the floor of the reservoir here, eventually accumulating to a depth of approximately 30 feet. As the reservoir's level dropped due to the drought which began in the year 2000, more recent flash floods roared down this canyon and flushed huge quantities of these sediments further down the canyon into the still waters of Lake Powell. Glen Canyon National Recreation Area, Utah. Photo Date: October 2007. This horizontal photograph was captured using a 6x7 format camera. All photos in these galleries may be ordered as fine art framed prints or for stock photography usage.