The Colorado - Green River reach extends for 6 km from the confluence with the Green River (Bkm 22) to the upstream entrance to Cataract Canyon just downstream from Spanish Bottom (Bkm 22). This reach is both geologically and geomorphologically similar to the lower Meander Canyon reach. However, it is defined as a separate reach because the combined high flows of the Green and upper Colorado through this reach can be nearly twice the flow of either river upstream from the confluence. Xeric native shrubs are the most common vegetation type in this reach (15%), with much of the area occurring in the wide and dry Spanish Bottom. Coyote willow is common in near river areas (8%), as is tamarisk (7%). Riparian trees...
