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2025 Hazard Mitigation Plan <br />Kittitas County, Washington <br /> <br /> <br />Chapter 4: Hazard Identification and Risk Assessment 128 <br />Flooding Source and <br />Location <br />Drainage Area <br />(square miles) <br />Discharge <br />(cubic feet/second) <br />10-Year 50-Year 100-Year 500-Year <br />Crystal Creek <br />Crystal Creek at Mouth 7.7 150 220 250 320 <br />Naneum Creek <br />Naneum Creek at Mouth -- 920 1,310 1,480 1,890 <br />Wilson Creek <br />Wilson Creek at Moutha 396 3,100 4,250 4,750 5,900 <br />Confluence with Cherry <br />Creek (Upstream) -- 2,050 2,750 3,000 3,700 <br />Confluence with Naneum <br />Creek (Upstream)a -- 1,550 2,170 2,360 2,950 <br />Upstreama -- 475 680 770 986 <br />Reecer Creek <br />Downstream 40 280 400 450 560 <br />Currier Creek <br />Downstreamb 40 280 400 450 560 <br />Dry Creek Connection Road 26.6 180 255 290 360 <br />Whiskey Creek <br />5th Street -- 75 105 175c 275c <br />Upstream 10.3 75 105 118 147 <br />Mercer Creek <br />Mercer Creek at Mouth 15.6 110 150 220a 310a <br />Railroad Avenue -- 110 150 170 210 <br />Caribou Creek <br />Downstream 36.7 294 417 471 595 <br />Teanaway River <br />Teanaway River at Mouth 207 5,300 6,700 7,350 8,700 <br />Confluence with North Fork <br />Teanaway River (Upstream) 69 2,400 3,000 3,300 3,900 <br />North Fork Teanaway River <br />North Fork Teanaway River <br />at Mouth 95 2,900 3,700 4,000 4,750 <br />Middle Fork Teanaway River <br />Middle Fork Teanaway River <br />at Mouth 30 1,250 1,570 1,700 2,020