This maps shows distances away from the channel boundary of the Colorado River mainstem. The channel boundary was mapped from public available NAIP imagery flown on June 28, 2011, when the river flow was 886 m3/s at the Cisco gage. The channel is subdivided into channel types: main channel, secondary channel, backwater, isolated pool and tributary channel. Closer to the channel often non-preferred habitat for burrowing; 50-100 m is moderately non-preferred; >100 m preferred.