Gunnison flows to be cut below tunnel diversion

Officials from the U.S. Bureau of Reclamation recently announced flows in the Gunnison River below the Gunnison tunnel diversion dam will be cutback Monday morning through late Tuesday.
Dan Crabtree, lead hydrologist for Reclamation in Grand Junction, said the Uncompahgre Valley Water Users Association will be doing repairs on the dam apron and there can be no water across the dam during the work.
This will require flows in the Gunnison River be reduced to approximately 400 cubic feet per second so no water is spilling over the diversion dam, Crabtree said in an e-mail.
Half of that flow (200 cfs) will be diverted into the tunnel, leaving 200 cfs for the river.
Work is scheduled to be finished sometime Tuesday afternoon, Crabtree said. At that time, flows in the Gunnison River through the Black Canyon are expected to be restored to around 500 cfs.


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