Provincial Runoff Highlights

Rbla

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• Publié par: ecomejex
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Provincial Runoff Highlights     May 8, 2011 Both Round and Crooked Lakes are beginning to decline. Inflow to the Qu’Appelle from eastern tributary streams from melting of the recent snow pushed the levels of Crooked and Round lakes to second peaks. Both lakes have dropped since yesterday but remain at high levels. Coupled with the potential for wave damage this increases the risk for cottagers at these lakes. These peaks are expected to be of short duration as the melt water from the recent storm passes and the lakes will then return to levels prior to the snow storm. Pasqua, Echo, Mission and Katepwa lakes are continuing a slow decline. Sandbag berms and other protective measures will be needed for several weeks on the Qu’Appelle lakes including an allowance for wind and maintenance of the berms. Please refer to the Qu’Appelle Lakes flood peak section of this report for additional information. Releases from Rafferty Reservoir are at 83 m 3 /s. This flow is expected to be maintained over the weekend. Flooding of low lying areas and some roads can be expected. High flows are necessary due to the high runoff from the recent storm. Cypress Lake is at its highest level since 1971. The diversions from Battle Creek and tributaries of the Frenchman into Cypress Lake are closed to avoid overfilling the lake which is expected to finish filling from local runoff. A small release from Cypress lake of 1.4 m 3 /s has been initiated. The level of Lenore Lake is at a record level and continuing to rise. Flows on the Red Deer River at Archerwell and Steen remain very high but have levelled and are near their peak.