addressing climate change adaptation in regional transportation plans

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Cal-Adapt ProjectionsTable 13. Summary of Cal-Adapt Climate Projections for Northern Central ValleyEffectTemperatureChange, 1990-2100PrecipitationHeat WaveWildfire RiskRangesJanuary increase in average temperature of 4°F to 6°F and between8°F and 12°F by 2100.July increase in average temperature of 6°F to 7°F in 2050 and 12°Fto 15°F by 2100.(Modeled high temperatures – average of all models; high carbonemissions scenario)Annual precipitation is projected to decline by approximately one totwo inches by 2050 and three to six inches by 2100.(CCSM3 climate model; high carbon emissions scenario)Heat wave is defined as five days over 102°F to 105°F, except in themountainous areas to the east. Two to three more heat waves peryear are expected by 2050 with five to eight more by 2100.By 2085, the north and eastern portions of the region willexperience an increase in wildfire risk, more than 4 times currentlevels in some areas.(GFDL model, high emissions scenario)[Public Interest Energy Research, 2011. Cal-Adapt. Retrieved from http://cal-adapt.org]Water SourcesTwo rivers, the San Joaquin and Sacramento, run through this region. The riversoriginate from snowmelt in the Sierra Nevada and the mountainous regions inthe north and flow toward San Francisco Bay, where the flows eventually reachthe Pacific Ocean. The confluence of the rivers occurs in the Sacramento-SanJoaquin Delta.Water moves through the region through natural waterways as well as a networkof canals and reservoirs. The reservoir and canal systems that hold much of theregion’s water allow it to be leveraged for energy generation and recreationaluse (DWR, 2009). The water supply network for the region is highly complex.One third of the regional water supply relies on groundwater pumping, whichcan increase during drought periods when more water may be pumped to makeup for surface water shortfalls. For the remaining majority of the water supply,there is heavy reliance on the surface water conveyance systems that provide theinflow to the Sacramento-San Joaquin Delta (also known as the California Deltaor the Bay-Delta.The Delta serves as a primary water source for the entire state, servingapproximately 25 million residents as far south as San Diego and an agriculturalindustry valued at over $25 billion (San Diego County Water Authority, n.d.).These supplies are delivered through the State Water Project, the Central ValleyAPG: UNDERSTANDING REGIONAL CHARACTERISTICS PAGE 38
Project, and a host of other federal water projects. In the Delta, the system ofcanals, bordered by levees, also serves to deliver floodwater, support commercialfishing, provide for recreational activities, and maintain ecosystem health. Thenetwork of reservoirs within the region also plays a vital role in preventingsaltwater intrusion in the California Delta by providing freshwater flushes duringthe summer and fall (DWR, 2009).The Northern Central Valley region overlaps three hydrologic regions as definedby the Department of Water Resources: San Joaquin River, Sacramento River, andSacramento-San Joaquin Delta. Reservoir storage capacity in the SacramentoRiver and San Joaquin River hydrologic regions is 16.15 and 11.48 million acrefeet,respectively (DWR, 2009).Biophysical CharacteristicsWhile elevations range from 3,000 to 12,000 feet in the eastern areas of Madera,Butte, Sutter, and Tehama counties, areas located within the primary Delta zonein southern Yolo County and eastern Sacramento and San Joaquin counties are ator below sea level (CDFG, 2007). On average, elevation in the Northern CentralValley region is less than 300 feet above sea level. The region is bordered bythe Sierra Nevada to the east and the coastal mountain ranges to the west. Theextensive natural vegetation in the region is dominated by grasslands and scrubbut also contains hardwood and coniferous forest and woodland (FRAP, 1998).Major rivers include the Sacramento, San Joaquin, Feather, Merced, and Stanislaus.Many of the large lakes in the region are the result of river damming as part ofreservoir and water project construction.Regional Entities• Air Districts: Butte, Colusa, Feather River, Glenn, San Joaquin Valley Unified,Tehama, Yolo-Solano• Regional Organizations: Butte County Association of Governments,Tehama County Transportation Commission, Glenn County TransportationCommission, Colusa County Transportation Commission, Sacramento AreaCouncil of Governments, San Joaquin Council of Governments, StanislausCouncil of Governments (StanCOG), Merced County Association ofGovernments, Madera County Transportation Commission• Tribal Lands (U.S. EPA, 2011): Berry Creek, Colusa (Cachil Dehe), Cortina,Enterprise, Grindstone Creek, Mooretown, North Fork, Picayune, RumseyPAGE 39APG: UNDERSTANDING REGIONAL CHARACTERISTICS
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Addressing Climate Change Adaptatio
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appendix b reportState-of-the-Pract
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State-of-the-Practice Climate Chang
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Page 181: State-of-the-Practice Climate Chang
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Page 190 and 191: Adaptation Planning Guide - Advisor
Page 192 and 193: List of Tables (cont’d.)Table 6.
Page 194 and 195: Climate Impact RegionsThe APG is or
Page 196 and 197: APGSTART HERE:PLANNING FOR ADAPTIVE
Page 198 and 199: What are the designated climate imp
Page 200 and 201: CA Climate Adaptation Planning Guid
Page 206 and 207: • Selected Demographic Data. Sele
Page 208 and 209: Cal-Adapt ProjectionsTable 1. Summa
Page 210 and 211: Selected Infrastructure and Regiona
Page 212 and 213: illnesses due to air pollution resu
Page 214 and 215: Additional Resources• Sea level r
Page 216 and 217: Cal-Adapt ProjectionsTable 5. Summa
Page 220 and 221: frequency can harm forests. Large i
Page 222 and 223: Bay Area RegionCounties: Alameda, C
Page 224 and 225: the Sacramento and San Joaquin rive
Page 226 and 227: Table 12. Selected Population Data
Page 228 and 229: Sea level rise is also expected to
Page 230 and 231: Additional Resources• Public Heal
Page 236 and 237: Table 16. Selected Population Data
Page 238 and 239: As with crops, climate change impac
Page 240 and 241: Additional Resources• Wildfire Re
Page 242 and 243: elevations, increased static levee
Page 244 and 245: The ecosystem functions of the Delt
Page 246 and 247: Setting and HistoryThe California D
Page 248 and 249: The islands in the lower Bay-Delta
Page 250 and 251: Some of the questions that should b
Page 252 and 253: Southern Central Valley RegionCount
Page 254 and 255: Biophysical CharacteristicsThe west
Page 256 and 257: The crops produced are varied and i
Page 258 and 259: Communities in this region should e
Page 260 and 261: Cal-Adapt ProjectionsTable 25. Summ
Page 264 and 265: have the resources to prepare for,
Page 266 and 267: Additional Resources• Sea Level R
Page 272 and 273: Timber practices have also had ecos
Page 274 and 275: Southeast Sierra RegionCounties: Al
Page 276 and 277: Biophysical CharacteristicsThe sout
Page 278 and 279: ultimately result in reduced water
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Selected Infrastructure and Regiona
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particular concern are populations
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Additional Resources• Sea Level R
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Cal-Adapt ProjectionsTable 41. Summ
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Selected Infrastructure and Regiona
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industry around Big Bear. As there
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California Natural Resources Agency
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addressing climate change adaptation in regional transportation plans

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