Researchers say a waterfall or rapid could begin to form on the Colorado River in the near future, and there’s a good chance it will present an unrunnable obstacle for boaters — and a barrier for fish.
The process may be repeating itself on the Colorado River near Hite, where the river meanders through a wide basin of silt below an abandoned marina once frequented by houseboats on Lake Powell.
Bob Tusso, left, and Paul Grams with the United States Geological Survey use sonar equipment attached to a motorized raft to map the streambed profile along the Colorado River in Cataract Canyon and the ever changing silt that lines the canyon. DeHoff said an excavator could dig a canal down the old channel and as water runs through it during spring runoff, the river would theoretically cut through the softer sediment, abandoning the channel where the waterfall would form and allowing sediment to flow downstream.
Keith Gido, a biology professor at Kansas State University who has done extensive research on the San Juan River, said he would support removing the Piute Farms Waterfall if the decision was reversible. The U.S. Fish and Wildlife Service weighs an endangered razorback sucker below the Piute Farms Waterfall in southeast Utah on Tuesday, March 29, 2022.
The San Juan carries more sediment than the Colorado, and nonnative species like smallmouth bass are already present in the system above the waterfall but have not yet caused problems, possibly because the San Juan is too muddy.
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