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<br /> <br />2021 Multijurisdictional Local Hazard Mitigation Plan <br /> <br /> Figure 17-4. High-Heat Days in San Mateo County <br /> <br />Even under wetter climate projections, the loss of snowpack would pose challenges to water managers, hamper <br />hydropower generation, and nearly eliminate skiing and other snow-related recreational activities. The San <br />Francisco Bay Area will experience direct impacts from a reduction in snowpack. Under a high emissions <br />scenario, average Sierra Nevada snowpack is projected to decline by nearly 20 percent in the next two or three <br />decades, 30 to 60 percent by mid-century, and over 80 percent by late century. Figure 17-5 displays historical, <br />mid-century, and end century projected Sierra Nevada snowpack. <br /> <br />Sea Level Rise <br />Global models indicate that California will see substantial sea level rise during this century, with the exact <br />magnitude depending on such factors as global emissions, the rate at which oceans absorb heat, melting rates and <br />movement of land-based ice sheets, and local coastal land subsidence or uplift. See Chapter 13 for the complete <br />profile of sea-level rise as a hazard of concern under this risk assessment <br /> <br /> <br /> <br />17-8