A small group of local residents has a vision for a portion of the Colorado River that includes shaded places to rest and a return to the native ecosystem. It’s a dream the 80-some members of the Friends of McInnis Canyons hope others will share. For too long, invasive tamarisk trees have dominated the riverbanks along the 25-mile stretch between the Loma boat ramp and Utah’s Westwater section in Ruby Canyon and Horsethief Canyon. As tamarisk beetles work to kill the water-guzzling species, an effort is under way to replant Freemont cottonwood trees to help return the area to its...