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CONCLUSION <br />Bowers Field airport currently experiences problematic flooding across its runways during the 100 -year <br />flood event on Whiskey and Mercer Creeks, prompting a hydraulic analysis to asses flood reduction <br />measures. The preferred alternative determined by this analysis includes a combination of actions that <br />alleviate flooding across runway 11-29 and reduce shallow flooding on the western edge of the airport <br />property. New and expanded ditches route overland flow away from both airport facilities and <br />downstream properties between Whiskey and Mercer Creeks. The flood storage ponds provide enough <br />live storage to prevent routed flow from increasing peak flood depths downstream while still draining <br />within 12 hours of the flood peak to meet FAA requirements for surface impoundment. <br />REFERENCES <br />WSE (2018), "Whiskey and Mercer Creek Hydraulic Modeling and Analysis" Memorandum to Mark Cook, <br />Kittitas County Public Works. Watershed Science and Engineering, Seattle, WA, March 29, 2018. <br />WATERSHED l; 6 <br />1I- <br />