The razorback sucker has survived in the river for more than 3 million years. Climate change could end that.
Fingernail-sized mollusks are spreading through U.S. rivers, lakes and bays, clogging water supply pipes and altering food webs.
Low levels and warming waters threaten to increase invasive species in the Colorado River.
Glen Canyon Dam, climate change and invasive plant species are threatening the Colorado River.
By Kurt Repanshek, National Parks Traveler From the high country in Rocky Mountain National Park a muddy flush of water rushes downstream, through western Colorado. It turns left, going south...
By Kurt Repanshek, National Parks Traveler By mid-century, annual runoff into the Colorado River could be reduced by nearly a third as declining snowpack leads to greater evaporation of snowmelt,...
Years of drought, upstream diversions and impoundments, and an overly optimistic forecast of Colorado River flows, have sapped the river once literally called Grand.