Northern Arizona is full of river runners, many of whom take their dogs downriver with them. Whether it's the Verde or the Salt River, many a mutt has gone along for the ride. And though dogs aren't allowed on the Colorado River in the Grand Canyon, commentator Scott Thybony says that doesn't mean it hasn't been done.
The Hualapai tribe has temporarily postponed upriver rafting trips in the Grand Canyon. As Arizona Public Radio’s Parker Olson reports, the suspension comes after the National Park Service voiced concerns about upriver travel.
A proposed development project near the confluence of the Colorado and Little Colorado rivers is one step closer to becoming a reality. But, as Arizona Public Radio’s Ryan Heinsius reports, several key questions still remain about the controversial, multimillion-dollar development.
There was a time when scientists feared the demise of an ugly little fish called humpback chub, which has lived in southwestern rivers for millions of years. One of its last holdouts is in the Grand Canyon section of the Colorado River at a major tributary, the Little Colorado. Glen Canyon Dam took its toll on the little fish, and by the late 1990s, its population plummeted to a few thousand.
But these days, the humpback chub appears to be making a comeback.
The Colorado River is about to run wild again, at least a couple times a year. In May, Interior Secretary Ken Salazar approved a series of simulated floods -- releasing huge amounts of water and sediment from the Glen Canyon Dam over the next several years. It’s all part of a long-studied effort to restore the river environment downstream.
Five boats recently launched a two-week Grand Canyon river trip. The group of tourists paddled white-water rapids, hiked side canyons and camped at river’s edge.
Over the past hundred years, people have introduced dozens of non-native fish species into the Colorado River and its tributaries. During that time, populations of native fish species have dropped, in some cases dramatically. It’s easy to guess at the causes of native species decline, like predation and competition for food. But it’s far more difficult to prove.