Green River Panorama
February 27, 2012
Photographer: Stephen J. Gledhill
Summary Authors: Stephen J. Gledhill; Stu Witmer
This image was captured a couple of minutes after sunrise on September 27, 2011 from the Labyrinth campground on the western side of the White Rim Trail in Canyonlands National Park, Utah. The Sun is directly behind me and casts the shadow of the Green River valley rim onto the cliff face on the opposite side of the river. The stillness of the morning helped create a striking reflection on the river. A few minutes after this picture was taken it was business as usual for daytime in the park - bright, glaring, baking hot sun.
The Green River’s source is in the Green River Lakes on Gannett Peak, Wyoming’s highest mountain. In its 730 mi (1,175 km) course, the river has an average descent of 13 ft/mi (2m/km). It's the largest tributary of the Colorado River system with a catchment area of 45,000 sq mi (116,500 km2). The greenish color of the water, and the river's name, is most likely derived from the green soapstone in some of its banks.
Photo Details: Camera: Canon EOS 7D; Focal Length: 15mm lens (24mm - equivalent to a 35mm on a full frame camera); Aperture: f/11; Exposure Time: 0.040 s (1/25); ISO equiv: 200; Software: Adobe Photoshop Camera Raw 6.6 (Windows). The picture was created by stitching together a series of six vertical format frames taken in rapid succession to create the 180-degree panorama.