I once held a Colorado Pikeminnow in my hands. It was freshly caught by biologists who were searching for this species of fish in the silt-laden Colorado River. Water dripped off the fish’s silver scales as it moved back and forth in my hands, trying to free itself. I stared down at it, remembering that less than a hundred years ago this fish species had been six feet in length with a powerful body that propelled it hundreds of miles down the Colorado River to the Gulf of California and, incredibly, back again. The squirming fish in my hands was less than a foot long, but that it was here, in southern Utah's Cataract Canyon, despite tremendous ecological changes to the Colorado River over the last hundred years, was no less incredible.

The Colorado Pikeminnow is one of four federally endangered fish species whose presence in our rivers is far from assured. Hydropower dams, water development and use, non-native fish species, riparian habitat loss and previous management actions have dramatically reduced the native fish populations. Since the early 1990s, significant effort has gone into recovering these endemic fish, funded in a large part by hydropower dam revenues. Recovery and scientific research programs such as the Upper Colorado River Endangered Fish Recovery Program, the San Juan River Basin Recovery Implementation Program and the Grand Canyon Monitoring and Research Center have used those funds and the best available science to maintain and, in some case, increase the numbers of these fish, which evolved to withstand the tremendous and turbulent flows of our Southwestern rivers.

Despite the recent successes and the ecological benefits of maintaining diverse aquatic ecosystems, the White House Office of Management and Budget has ordered that $23 million of hydropower revenue, intended for native fish and riparian research and recovery programs, be redirected to the U.S. Treasury beginning October 1 of this year. This removal of previously consistent funds for science and recovery places our rivers at risk for detrimental or unwanted ecological changes. Loss of these programs may result in continued imperilment of our native fish species and the discontinuation of valuable data collection in Colorado River ecosystems spanning back decades. The importance of continuous long-term data is underscored by a changing climate, increasing water demands, and altered waterways, all of which need to be managed into the future. Without continued long-term data informing our understanding of how these river systems respond to change, we will be managing our changing rivers blind.