On July 17, 2020, the Federal Energy Regulatory Commission ordered Denver Water to proceed with design and construction to expand the reservoir.
Treasure tucked away in a quiet canyon
Named for Denver Water former Chief Engineer Dwight D. Gross, the reservoir was completed in 1954. It serves as a combination storage and regulating facility for water that flows under the Continental Divide through the Moffat Tunnel. Standing 340 feet above the South Boulder Creek streambed, Gross Dam contains some 627,559 cubic yards of concrete.
By the numbers