Hundreds of Dead Fish Found at Grizzly Reservoir, CPW Investigates Cause
Colorado Parks and Wildlife linked the deaths of 200 rainbow trout to rising reservoir temperatures, increased copper toxicity, and reduced fresh water inflows from local creeks, officials said.
5 Articles
5 Articles


Colorado Parks and Wildlife releases cause of death for hundreds of fish in Grizzly Reservoir
Rising water temperatures and declining water quality are responsible for the death of nearly 200 fish at Grizzly Reservoir in Pitkin County, according to the results of Colorado Parks and Wildlife’s preliminary investigation. Grizzly Reservoir is a high alpine lake located above Aspen and formed by the damming of Lincoln and Grizzly creeks. The investigation was conducted in partnership with Pitkin County Public Health, Pitkin County Healthy R…
Hundreds of dead fish found at Grizzly Reservoir, CPW investigates cause
DENVER (KDVR) — Hundreds of dead fish were found at a reservoir near Glenwood Springs, despite Colorado Parks and Wildlife checking the reservoir's conditions before stocking rainbow trout in July and August. CPW was alerted to the potential fish kill along the shores of Grizzly Reservoir in Pitkin County on Monday, Aug. 18, and has now made a preliminary determination on what caused the fish to die in collaboration with Pitkin County Public Hea…
Mysterious deaths of 200 fish found dead at reservoir prompt investigation in Colorado
Colorado Parks and Wildlife has issued a press release related to a large number of fish that were found dead on the shore of Grizzly Reservoir in Pitkin County. This news comes just weeks after the reservoir was stocked with…
Hundreds Of Fish Found Dead Along Colorado Reservoir Shoreline
Colorado Parks and Wildlife (CPW) investigated the death of approximately 200 fish found along the shoreline of Grizzly Reservoir in Pitkin County. CPW first learned of the dead on August 18th. CPW made a preliminary determination on the cause of recent fish mortality in collaboration with Pitkin County Public Health, Pitkin County Healthy Rivers, the Roaring Fork Conservancy, the U.S. Forest Service, and the Twin Lakes Reservoir and Canal Compa…
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