2 3 2021 Government House Leader

2 3 2021 Government House Leader

111882 ALBERTA ENVIRONMENT AND PARKS Office ofthe Minister 2 3 2021 MLA, Rimbey-RockyGovernment Mountain House Leader House-Sundre Darryl Drohomerski, C.E.T., Chief Administrative Officer Town of Drumheller 224 Centre Street Drumheller AB TOJ 0Y4 [email protected] Dear Darryl Drohomerski; My colleague the Honourable Ric Mclver, Minister of Municipal Affairs, forwarded a copy of your backgrounder "Drumheller Flood Mitigation and Climate Adaptation System." As Minister of Environment and Parks, I welcome the opportunity to provide the following information. As you are aware, the primary purpose of the Dickson Dam Water Management Project is to provide an assured water supply to communities and industry within the Red Deer River basin. Over the past 38 years, the dam has also successfully provided a level of flood protection as a secondary benefit. Although each flood season and flood event is unique and a specific flow release amount cannot be guaranteed, Environment and Parks staff have undertaken further assessments and determined the current operating procedures in place for Dickson Dam are sufficiently robust to provide a maximum reduction of flow releases from the dam. Based on the operating intent, in addition to the statistically probable operational ability to reduce flood peaks, the department will use a 1:100 regulated flow of 1850 cubic metres per second when creating a provincial flood hazard map in Drumheller. Applying this regulated flow to the mapping process will align with Drumheller's local mitigation plans. As the timing of release of the new flood hazard map requires further discussion with Drumheller and other affected local governments, I encourage you to contact Mr. Bryce Haimila, Flood Hazard Manager, in Edmonton, at 780-427-8221 (dial 310-0000 for a toll-free connection), or at [email protected]. Sincer Jason Nixon Minister cc: Honourable Ric Mclver, Minister of Municipal Affairs Bryce Haimila, Environment and Parks Stephen LaCroix, Municipal Affairs 323 Legislature Building, 10800 97 Avenue, Edmonton, Alberta T5K2B6 Canada Telephone 780-427-2391 lYmud on rrtytUdpjper.

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