3.5 WATER MANAGEMENT AND CONTROL Once the desired construction elevation of 91.0 ft is reached, work will begin on the temporary upstream access paths. NS Power had originally requested a drawdown level of 98'; however, upon careful review...
AI summary The document discusses the construction and water management aspects of the Ruth Falls Dam project, including the lowering of the reservoir to 91 ft for safety and reliability, spillage during the refurbishment period, and the installation of access roads and cofferdams to facilitate construction activities.
The maximum mean flows outlined in Table 3 take into consideration inflows from the Grant River, which was included in the 2008 flood study as the Grant River Watershed contributes significant inflow to Ruth Falls Headpond. The water manag...
AI summary The document outlines the water management plan for a project, detailing the maximum mean flows, the capacity of gates and spillways at different headpond elevations, and contingency measures for precipitation events. It also mentions the construction of temporary access roads and the handling of infrastructure during high water levels.
CI 50518 NSUIARB IR-12 Attachment 12 Page 14 of 576 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Should high return period rain events (i.e. 1:10 year return period) occur during construction activities, the Ruth Falls Headpond can withstan...
AI summary The document outlines water management strategies during the construction of the Ruth Falls Headpond, including measures to handle high return period rain events, temporary infrastructure removal, and the construction of access roads that do not interfere with sluiceway discharge capacity.