Gross Reservoir Expansion

open for bidding

Colorado 9/14 Denver Water is requesting qualifications from engineers interested in consulting on quality-assurance, quality-control aspects of the Gross Reservoir expansion project. The project entails raising the Gross Dam by 131 ft, to a final height of 471 ft, and increasing storage volume to about 119,0000 acre-ft from 41,811 acre-ft. A planned downstream roller-compacted concrete-buttress raise, matching the existing curvature of the dam, will require more than 900,000 cu yd of RCC. The raise will involve foundation preparation, RCC construction, outlet-works modification, spillway construction and mechanical-electrical-operations enhancements.