As goes the Colorado River, so go the national parks
A warming climate has been linked to human activity around the world, and has affected the Colorado River System as well. The impacts are substantial, from reduced water flows, threats to indigenous species and the influx of new invasive species along the river system.
Years of drought, upstream diversions and impoundments, and an overly optimistic forecast of Colorado River flows, have sapped the river once literally called Grand.
As climate warming shrinks the Colorado River Basin's snowpack, runoff into the river will decrease by 9.5% per 1 degree C (Patrick Cone, National Parks Traveler)