This is cut and pasted from the final EIA report:
"In the headpond, sedimentation due to reversing flow through the fishway and the contribution
of sediment upstream of the headpond will continue. Between 1968 and 2003, it is estimated
that 0.5 Mm3
of sedimentation within the headpond can be attributed to these processes. Under
the Status Quo, this sedimentation will continue and would result in an estimated 0.25 Mm3
of
sedimentation by 2025 based on the estimated infilling rate attributable to these processes
since causeway construction. By 2105, it is anticipated that the headpond would reduce in
volume by about 1.25 Mm3
, a reduction in the current headpond volume in the order of 12.5%.
Ultimately over the longer term, these processes will continue into the future and may lead to
the effective loss of the headpond. "
http://www2.gnb.ca/content/dam/gnb/D...ifications.pdf