August 10 -- Little Colorado River, Powell calls a halt for a few ... August 25 -- Lava Falls and Vulcan's Throne on Colorado River, The party opens its last sack of flour.

Rusty crayfish, an aquatic nuisance and an invasive species, has been discovered in a Larimer County river south of Estes Park, according to Colorado Parks and Wildlife.

An aquatic nuisance species has been found for the first time in the Little Thompson River, according to Colorado Parks and ...

Navajo Nation Council rejected an aerial tram with capacity to carry 10,000 tourists per day to the confluence of the Colorado and Little Colorado ... along the Colorado River and a 420-acre ...