Laserfiche WebLink
1. Green River drainage <br />a. Green River from Browns Park to the Green and Colorado river <br />confluence (rm 0-398 [rkm 0-640.5]). <br />b. Yampa River from Cross Mountain to the Yampa and Green river <br />confluence (rm 0-50 [rkm 0-80.5]). <br />c. White River from Taylor Draw Dam to the White and Green <br />river confluence (rm 0-104.5 [rkm 0-168.2]). <br />2. Colorado River drainage <br />a. Colorado River from Rifle, Colorado to the Colorado and Green <br />river confluence (rm 0-241 [rkm 0-387.9]). <br />b. Gunnison River from the Gunnison and North Fork river <br />confluence to the Gunnison and Colorado river confluence <br />(rm 0-75, [rkm 0-120.7]). <br />Aerial photographs were taken during high, medium, and low flows in the Green <br />River drainage and during high and low flows in the Colorado River drainage. <br />Flows were determined using the U.S. Geological Survey (USGS) stream gauge on <br />the Green River at Jensen, Utah, the Stateline stream gauge on the Colorado <br />River near the Utah and Colorado stateline, and the Gunnison River stream <br />gauge at Whitewater, Colorado. The target water discharge (cubic feet per <br />second [cfs]) and date for aerial photographs were as follows: <br />1. Green River drainage <br />a. High flows between 18,000 and 20,000 cfs on 25 May 1993 in the <br />Green, Yampa, and White rivers. <br />b. Medium flows between 6,000 and 12,000 cfs on 15 and 30 June <br />1993 in the Green River between Split Mountain and Sand Wash. <br />c. Low flows between 1,000 and 2,000 cfs on 28 September 1993 in <br />the Green, Yampa, and White rivers. <br />2. Colorado River drainage <br />a. High flows between 18,000 and 20,000 cfs in the Colorado River <br />and 7,000 and 9,000 cfs in the Gunnison River on 10 June 1993. <br />b. Low flows between 4,000 and 5,000 cfs in the Colorado River <br />and 2,000 and 3,000 cfs in the Gunnison River on 28 September <br />1993. <br />After consultation with personnel from the NRCS, it was determined that <br />one photograph per river mile was necessary to adequately photo-document <br />bottomland habitat areas. It was estimated that it would take approximately <br />5