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6.A. - Page 38 of 251 <br />Impacts of Climate Change on Redwood City <br />Figure 4: Projected Sea -Level Rise (3.3 feet and 1 percent Annual Chance Storm) and Erosion (4.5 feet and 1 percent <br />Annual Chance Storm) - San Mateo County Shoreline27 <br />Brisbane Legend <br />.Colma Future Erosion' <br />Mid -Level Scenario" <br />M-1 Rxk r'� 101 Oyster PON <br />uth Electric Substation <br />Sall Cisco_ 999 <br />t o l Wastewater Treatment Plant <br />Pachca Municipal Pier – o 'Erosion impacts are estimated with 4.6 <br />UlTf11Tf1' Pa[ifi[a t feet of sea level rise, but modeling does <br />San B. no 1 �. SF Airport o� not consider shoreline armoring. <br />_ `•m %^Estimated Impacts are based on 1 <br />e+o annual chance storm or 1 in 100 chance <br />of a storm occurring In any given year, <br />iRbrae plus additional 3.3 feet cf sea level rase. <br />Linda Mar <br />Burlin coyote Paint <br />San Mateo Bridge <br />San M ` <br />Hillsborough Foster City <br />SD <br />i <br />juMontara �• 101 � �� �eairrsland <br />Fitzgerald off• � WeNonds <br />Marine Reserve P <br />Q. Belmont ,'� ",Ja, i--barton Bridge <br />San Ca ■r <br />��On Arrport` <br />92 San Carlos �s Xalser <br />Pl(iar Po-urf a, 6or Hospital <br />Suh rs Beach -. ..:�J <br />Horth <br />41 Half Moon Ba Redwood City `j� <br />Fair Oaks � li�y�cooleyianding <br />Poplar Beach y \'.,Menlo Park'° East Palo pito <br />� Atherton <br />In 2018 the California Ocean Protection Council QPQ released updated Sea -Level Rise Guidance, which uses <br />"probabilistic -based"' projections and lays out an approach for developing adaptation strategies. The OPC <br />recommends using the projections included in Figure 5, below. Low-risk projections should be used for short-lived <br />infrastructure that is readily adaptable, such as trails. Medium -risk projections should be used for less adaptive, <br />more vulnerable projects such as housing developments. Extreme risk projections should be used for larger and <br />more complex infrastructure projects such as roads, wastewater treatment plants, and hazardous waste sites. <br />Figure 5: San Francisco 2018 Probabilistic Sea -Level Rise Projectioril <br />a <br />is <br />tB <br />W <br />a B <br />m E Lori' RISK m <br />coi <br />W MEDIUM RISK M <br />J <br />R EXTREME RlsK u <br />W m w <br />w j,} <br />LL <br />4 [n <br />W <br />W -0 8 � 410 <br />u rlr <br />w � ro in <br />B •■■ E� <br />2020 21MID 2090 Mao 24710 20810 2090 2100 <br />'Probabilistic -based projections "associate a likelihood of occurrence (or probability) with sea -level rise heights and rates and are directly tied <br />to a range of emissions scenarios."18 <br />City of Redwood City Climate Action Plan 27 <br />343 <br />