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6.0 SUMMARY <br />■ WSE developed hydraulic models for Cedar Gulch Creek and for the upper and lower reaches of <br />Crystal Creek and applied new peak flow hydrology to determine peak flood elevations and areas of <br />inundation. Model results were used to produce the information necessary to update floodplain <br />mapping, including the workmaps and flood profiles provided. <br />REFERENCES <br />Chow, V. T. (1959). Open -channel hydraulics. New York: McGraw -Hili. <br />FEMA (1981) Flood Insurance Study, City of Cie Elum, City of South Cie Elum, City of Ellensburg, Town of <br />Kittitas, and Kittitas County, Washington Unincorporated Areas, Federal Emergency Management Agency, <br />October 15, 1981 <br />FEMA (2011) Technical Support Data Notebook Terrain Project NarralAm Elevation Data Acquisition. Case <br />No. 11-10-01105, Prepared by Strategic Alliance for Risk Reductiov.Sciatember 12, 2011. <br />Mastin, M.C., Konrad, C.P., Veilleux, A.G., and Tecca, A.E.,..16, Magnse, frequency, and trends of <br />floods at gaged and engaged sites in Washington, ba on data throuZvater year 2014 (ver 1.2, <br />November 2017): U.S. Geological Survey Scienti !nveA Report 2016-5118, 70 p., <br />http://dx.doi.ore/10.3133/sir20165118. <br />SWATERSHED Page 11 <br />