In late August, I had the good fortune to float down the Colorado River from Silt to Rifle on a bright, sunny day, with cottonwoods just starting to think about turning their leaves to gold. Our guides had never floated this section of river before — there are no big thrills in these river miles. It was beautiful, though. We saw a lot of ospreys and herons, and the traffic on nearby I-70 was unseen and almost inaudible.
Our boats were filled with experts on how the management of land and water affects the flows in the river, the vegetation on the banks, and the living environment for fish and the bugs they eat. One of my companions pointed out places where the cottonwoods were all mature, because the river hadn’t reached that part of the floodplain recently enough for new cottonwood seedlings to sprout. Others discussed a new fish passage around a diversion dam on a tributary stream that had opened up several miles of habitat for trout. We contemplated how algae levels on the river’s bed might be related to nutrients released from an upstream wastewater treatment plant, and observed places where logs placed in the bank had shifted erosion from one place to another, changing the course of the river.
These features of the environment, along with many others, determine what kind of experience people can have on the river, whether they are fishing, boating, or just watching the water flow by. Other factors beyond immediate, local control also affect people’s ability to enjoy the river and its tributaries, both for recreation and the practical work of growing crops and bringing water to household faucets. These include cycles of drought and flood and a worrying long-term decline in streamflows brought about by warming temperatures.
Policy decisions about how to continue to share a shrinking river between seven U.S. states and two countries also matter. If irrigators get paid to spread less water on their land, which is one conservation measure that state leaders are studying, the resulting reductions in seepage to groundwater could affect their neighbors’ wells and the amount of water that trickles back into streams in late summer and fall. And what will the cows eat if less hay is produced locally? But things could be worse if water users face legal requirements to cut back, which may happen if Colorado and the other upstream states fail to meet downstream obligations.
The Middle Colorado Watershed Council, which organized the Silt-to-Rifle float, is wrestling with all of these issues as they work in coordination with the Bookcliff, Mount Sopris and Southside Conservation Districts to develop an Integrated Water Management Plan. They are bringing together irrigators, local government officials, business people and scientists to learn more about connections and trade-offs between different local water uses, stream health and large-scale trends and policy decisions. The goal is to find opportunities to protect and enhance stream health and all the ways people enjoy water in communities from Glenwood Springs to DeBeque. Similar efforts, also known as Stream Management Plans, are underway in other parts of the state, including the Yampa Valley, the Eagle Valley, and the area around Gunnison and Crested Butte.
This kind of work, daunting in its complexity, is important for helping communities chart their own water futures in challenging times. You can learn more about the Middle Colorado plan at https://www.midcowatershed.org/iwmp, and you can learn how other Colorado communities are approaching the challenge at https://coloradosmp.org/.
Hannah Holm coordinates the Hutchins Water Center at Colorado Mesa University, which promotes research, education and dialogue to address the water issues facing the Upper Colorado River Basin. She is also on the steering committee for the Middle Colorado Integrated Water Management Plan. Support for Hutchins Water Center articles is provided by a grant from the Walton Family Foundation. You can learn more about the center at http://www.coloradomesa.edu/water-center.