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Rebuilding wet meadows through shared stewardship

November 26, 2018 at 8:00am

A mule string from the U.S. Forest Service Rocky Mountain Region ride up the trail after unloading rocks at a rock dam location. (Photo by Benjamin Soderquist, USDA Forest Service.)

As another extreme drought in southwest Colorado lingers into fall, land managers continue to search for solutions to deal with severe water shortages. Low winter snow pack and record heat left much of the state scorched, and reservoirs have been far below their normal capacity since spring.

However, in September, a group of ranchers, USDA Forest Service scientists, agency partners, and mules hauled over 38,000 pounds of rocks to protect habitat for wildlife and forage for cattle by helping the landscape remain resilient to future droughts driven by climate change.

A rock dam above a meadow area on Flat Top Mountain on the Gunnison Ranger District. (Photo by Benjamin Soderquist, USDA Forest Service.)

Although small in size, sagebrush meadow ecosystems act like giant natural sponges, soaking up water into the soils and slowing releasing it after snowmelt and rain storms. Through this slow release of water, a continued base flow ensures a reliable water table throughout the growing season, creating wet meadows that provide critical habitat and food sources for the remaining 5,000 Gunnison sage-grouse while supplementing the irrigation needs of the many ranchers downstream.

Over the past century, these ecosystems have been degraded by previous land use practices, including roads and livestock overgrazing. Rapid snowmelt triggered by increasing temperatures triggered intense flooding that cut through and erode dry soils, creating deep channels across meadows that historically held soil moisture late into summer. The loss of soil moisture during the hottest months of the year increased stress on plants and wildlife and may occur more frequently as Colorado’s climate continues to warm.

USDA Forest Service Wildlife Biologist Matthew Vasquez stands near a rock rundown that prevents soil erosion. (Photo by Benjamin Soderquist, USDA Forest Service.)

To adapt to these threats, the Grand Mesa, Uncompahgre, and Gunnison National Forest staff, state and federal partners, and local ranching families collaborated to slow and spread the flow of water across degraded sagebrush meadows. They built rock structures designed to raise the water table, reconnect stream channels to the floodplain, restore impacted soils, and increase wetland plant cover. 

Since 2012, the Gunnison Basin partnership has restored 140 acres and built over 1,000 rock structures along 21 stream miles. This work has more than doubled the average cover wetland plant cover and improved 1,000 acres of Gunnison sage-grouse habitat. At many restored sites, the combined effects from rock structures, increased plant cover, and increased sediment deposition have significantly reduced severe soil erosion and channelization.

The shared stewardship and multiple ecological benefits generated by this project have been widely embraced by the local community. Forest Service managers are now working to expand this successful model across the Grand Mesa, Uncompahgre, and Gunnison National Forest. 

“Partnerships are what make this project possible,” said Matt Vasquez, wildlife biologist at the Grande Mesa Uncompahgre Gunnison Forest.  “When you have committed partners who each have something unique to contribute, everything falls into place.

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