Progress continues to be made on the permanent repairs to Hebgen Dam's intake structure. The work, which will continue this season through late January, is estimated to be completed in spring 2014.
The public access site has opened for ice fishing, and the U.S. Forest Service has placed signs to indicate parking areas to help motorists during construction and operations traffic at the site. Because of the spillway discharge there are areas of open water and thin ice near the access area, so caution should be taken.
The site will be open to the public until major construction work resumes again in the spring of 2012. Construction work will resume in spring, likely in mid to late May, depending on snow pack and lake elevation.
Work in 2011 consisted of partial demolition of the front of the existing intake structure, while drillers installed many steel bar anchors and large multi-strand anchors through the back wall of the intake. Drillers also performed consolidation grouting work through the bottom of the intake structure to improve the subgrade rock.
Construction of the new intake inside the existing structure will begin in 2012.
The reservoir is being lowered throughout the winter to allow for spring runoff. Subject to weather conditions and precipitation, PPL Montana operates Hebgen Dam pursuant to its federal license requirements.