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Dam Update (Aug 30) Parks Canada Update: Dam construction passed a milestone with the completion and certification of the temporary coffer dam and the commissioning of a water diversion channel around the construction site. Nearby residents along the Tay River may notice minor and intermittent fluctuations of water flow as the structures are tested. This work is not expected to have an impact on lake levels of either Bobs or Christie Lakes. Cofferdams are temporary in-water structures that are used to create dry work spaces in areas that would otherwise be underwater. In this instance, the cofferdam is being built using metal sheet piles that are driven into the bed of the lake. Rock fill is then used to provide additional structure. The coffer dam that is now in place will be supplemented with a downstream coffer dam that will complete the process of isolating the worksite from the water of Bobs Lake. In order to manage water within the Tay watershed a diversion channel has been created adjacent to the work site. The diversion channel has an operable inlet with log settings much like the existing dam and has also been designed to provide the same water management capacity as the dam. The use of a diversion channel as part of this project will not have any impact on water levels in either the up or down stream areas. While initial construction plans called for a two-phase approach using two separate coffer dam structures, the use of a diversion channel will allow the new dam to be constructed almost entirely in one phase.
Dam Update (Aug 18) Parks Canada Update: The coffer dam installation is going well. Parks Canada and the consulting engineer are implementing a different approach to construction than was initially communicated. Rather than 2 phases of coffer dam the approach will now be a single coffer dam. The contractor will manage water around the construction site through the use of a diversion channel. One known challenge is the dual in-water work restrictions in this area - to protect both warm water (spring) and cold water (fall) spawners. These restrictions posed a challenge to the 2-phase approach due to the need to be completely done that first phase in advance of the in-water work restriction period in October. The coffer dam and the diversion channel were designed by project engineers in order to meet the specifications of the water management team and more than satisfied their needs. Based on this new way forward the contractor has prepared a temporary channel along Parks Canada lands that will divert water around the construction site. The coffer dam will now be built to span the entire channel and the dam can almost entirely be built in one go. The first phase will now see the bulk of the dam built with the exception of the wing wall attaching the shoreline to the dam.
Subsidy Program Continued for 2018 Bobs & Crow Lakes Foundation in partnership with RVCA will offer a limited number of grants and funding for septic repair and inspections, as well as shoreline erosion remediation projects for residents of Bobs and Crow lakes. For full explanation of the conditions and subsidy amounts, select "Articles & Docs" to the right and then select "Misc Docs".
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