In a significant environmental and recreational development, Antero Reservoir is slated for closure to public access in 2026. This decision by Denver Water comes as a direct consequence of a severe and persistent drought gripping Colorado, characterized by exceptionally low snowpack and runoff levels. The utility plans to divert water from Antero, located in Park County, to Cheesman Reservoir to mitigate evaporation losses and conserve vital water resources. This strategic reallocation aims to safeguard approximately 5,000 acre-feet of water, representing about a quarter of Antero's storage capacity.
The current drought conditions are among the most severe in 40 years, with the Colorado River Basin's snowpack at a mere 36% of its typical levels and the South Platte River Basin even lower at 7%. These alarming figures prompted Denver Water’s board to declare a Stage 1 drought on March 25, initiating measures to reduce water consumption by 20% through April 30, 2027, and implementing temporary drought pricing. Serving about 1.5 million residents in Denver and its surrounding areas, Denver Water is taking proactive steps to manage the scarce water supply.
Antero Reservoir, known for its significant evaporation-to-storage ratio, is not unfamiliar with such drastic measures. It was previously drained during the 2002 drought and again in 2015 for essential dam rehabilitation. These historical precedents highlight the reservoir's role as a crucial resource during dry periods and the necessity of these interventions.
For outdoor enthusiasts, particularly anglers and campers, the closure presents a limited window of opportunity. Public recreation at Antero Reservoir, including camping, will cease after May 13. Colorado Parks and Wildlife has issued an emergency public fish salvage order, permitting the removal of all fish species without bag or possession limits until the closure date. This allows individuals to enjoy the reservoir's brown and rainbow trout, some of which are of trophy size, for a final period. However, motorized boating and commercial fishing are prohibited during the salvage window, with only hand-launched vessels and shoreline angling permitted. Visitors are also cautioned about the presence of New Zealand mudsnails in the reservoir and are advised to thoroughly clean and dry their gear to prevent the spread of this invasive species.
The impending closure of Antero Reservoir underscores the profound impact of climate change and drought on natural resources and recreational activities. The measures taken by Denver Water are critical for long-term water conservation in a region facing increasing environmental challenges, aiming to secure water supplies for a vast population despite the immediate recreational losses. This situation serves as a stark reminder of the delicate balance between human needs, recreation, and environmental stewardship in the face of escalating climatic pressures.