Authors: G. Snyder, J. Barnard, B. Parker and R. Murray
2006
Abstract
SGE Acres has been working on the rehabilitation of dams on the Musquash River watershed in Southern New Brunswick since 1998. The work started with a condition assessment and dam safety review after a near overtopping event during the freshet in 1998 which required the evacuation of residents downstream of one the main dams. The condition assessment found that the dams required additional freeboard and additional spillway capacity to pass their inflow design floods, and that stability of the concrete dams did not meet current CDA guidelines. In addition, a risk assessment showed that the probability of failure of one of the concrete dams did not meet current CDA guidelines. In addition, a risk assessment showed that the probability of failure of one or more of the small earth dams was unacceptably high. This paper presents a brief overview of the work that has been done to date, including the initial studies, the site investigations, and the rehabilitation work on the earth and concrete dams.
