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2025 Hazard Mitigation Plan <br />Kittitas County, Washington <br /> <br /> <br />Chapter 4: Hazard Identification and Risk Assessment 93 <br />Underserved and At Risk Population: The underserved and at risk population are exposed to higher <br />vulnerabilities and impacts during dam and levee failure events. During a dam and levee failure event, <br />the underserved and at risk population includes those that are potentially unable to evacuate on their <br />own such as the elderly, children, individuals with disabilities, and low-income families who may not have <br />the appropriate resources to evacuate. Additionally, individuals with limited English proficiency may not <br />have access to information in the appropriate language and limited internet access may prohibit to obtain <br />the emergency information in a timely manner. <br /> <br />Effects of Climate Change in Severity of Impacts: Although climate change does not have a direct <br />impact on dam and levee failures, flood frequency and magnitude are expected to increase as a result of <br />climate change. Subsequently increasing the probability of dam and levee failures. Refer to the Flood <br />section of this Plan. Table 4-37 indicated the 25-year precipitation projections in Kittitas County.95F <br />95 Table <br />4-38 outlines the flood associated climate indicators for Kittitas County projected through the end of the <br />century.96F <br />96 <br />Table 4-37. 25-Year Precipitation Projections for Kittitas County <br />Higher Emissions (RCP8.5) <br />Kittitas County is expected to experience a 12% increase in days with heavy precipitation within 25 years. <br />By 2049, Kittitas County is expected to experience 0.8 more days of heavy precipitation per year (from 6.9 days <br />to 7.8 days per year). <br />Lower Emissions (RCP4.5) <br />Kittitas County is expected to experience a 5% increase in days with heavy precipitation within 25 years. <br />By 2049, Kittitas County is expected to experience 0.3 more days of heavy precipitation per year (from 7.2 days <br />to 7.5 days per year). <br /> <br /> <br />95 Northeast Regional Climate Center. (n.d.). Neighborhoods at Risk: Climate Projections. Retrieved from <br />https://nar.headwaterseconomics.org/. <br />96 Climate Mapping for Resilience and Adaptation. (n.d.). Climate Mapping for Resilience and Adaptation <br />Assessment Tool. Retrieved from https://livingatlas.arcgis.com/assessment-tool/explore/details.