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| Creating habitat in the form of pools and overhead cover for fish through the placement of large woody debris (tree piles) at several locations within the Spray River system. Photo courtesy: TransAlta |
TransAlta News Release
August 11 2011
On May 23, Unit 2 of TransAlta’s Spray hydro plant was in the midst of scheduled major maintenance when Spray Unit 1 experienced a forced outage, effectively stopping water flow from the Spray system into the Bow River at Canmore. On June 2 a moderate controlled spill began at Goat Pond into Goat Creek to help alleviate rising water levels in the Spray Lakes Reservoir.
Despite this preventative release, inflows this year (from rainfall, snowpack and glacial melt) have been very high, and in mid-July the Spray Reservoir reached capacity, spilling over the spillway channel next to Canyon Dam. As a result, there has been higher-than-normal water volume and turbidity downstream.
Today, while levels in the system still fluctuate with glacial melt and rainfall, the peak flows have now passed and levels are steadily declining.
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