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384 assessment of climate change in the southwest united states(Coles and Scott 2009). Other weather and climate-related sources of vulnerability identified includeheavy rains, winds, hail, lightning, and frosts (Coles and Scott 2009).xxxiv The annual cost of wildland fire suppression in California alone now typically exceeds $200 million(MacDonald 2010). Three simultaneous wildfires in San Diego County in October 2003 andanother in October 2007 resulted in 25 deaths, destroyed a total of 3,700 homes, and scorchedover 1,850 square miles (3,000 square kilometers) (Grissino-Mayer 2010).xxxv Approximately 1.1 million acres burned in New Mexico in 2011, more than 4.5 times the state’saverage of around 242,000 acres. In Arizona, slightly more than 1 million acres burned, more than5.5 times the state average of about 182,000 acres). Dry conditions desiccated soils and live fuelsources (e.g., grasses, shrubs, and trees) by the spring and a hard February freeze killed manyplants and contributed to the fuel build-up (Southwest Climate Outlook, Oct. 25, 2011).xxxvi The Colorado River Water Delta Trust has identified a minimum base flow need of 63 mcm(51,000 acre-feet). The Trust has acquired 1.7 mcm (1,367 acre-feet), based on a successful collaborationbetween NGOs and the state of Baja California in securing treated effluent from Mexicalifor environmental flows to the Rio Hardy (Zamora-Arroyo and Flessa 2009).xxxvii http://www.geimexico.org/english.html provides an overview of Mexican efforts.xxxviii See http://www.sandag.org/index.asp?projectid=235&fuseaction=projects.detail.ixl U.S. EPA, “Draft Border 2020 Document – for public comment – September 5, 2011,” lines 126-153.xl See http://www.tjriverteam.org.