Southeast Florida's resilient water resources

Material Information

Title:
Southeast Florida's resilient water resources Adaptation to sea level rise and other impacts of climate change
Creator:
Barry N. Heimlich
Frederick Bloetscher
Daniel E. Meeroff
James Murley
Publisher:
Florida Atlantic University Center for Urban and Environmental Solutions
Publication Date:
Language:
English

Notes

Summary:
Anthropogenic activity is now widely accepted by the overwhelming majority of the world’s scientists as the major cause of global climate change (IPCC, 2007); (Karl, etal, USCCSP, & NOAA, 2009); (International Alliance of Research Universities, 2009). Climate change is driven primarily by the accumulation in the atmosphere of greenhouse gases from the burning of fossil fuels, deforestation, land use, and agricultural practices. Climate change has begun to exert significant effects in many regions of the world and there is already enough energy stored in the oceans, atmosphere, and land for adverse impacts to continue for centuries. In addition to an aggressive, concerted, global mitigation program to reduce greenhouse gas emissions in order to limit the extent of climate change, forwardthinking local adaptation is needed to cope with the unavoidable, potential, area-specific impacts of climate change. Southeast Florida, comprised of Miami-Dade, Broward, Palm Beach, and Monroe Counties with a combined population of 5.5 million (US Census, 2008), was reported to be one of the ten most vulnerable coastal metropolitan areas in the world, ranking 4th in terms of exposed population and 1st in terms of the value of exposed assets by the Organisation for Economic Co-Operation and Development (Nicholls & OECD, 2008). The region is especially susceptible to sea level rise and expected changes in local weather patterns. Recent reports from the U.S. Global Climate Change Science Program (Karl, etal, USCCSP, & NOAA, 2009) and the International Alliance of Research Universities (IARU, 2009) indicate that global average sea level may rise by approximately 2 to 4 feet or more by 2100, an amount that will have significant effects on coastal Southeast Florida. Southeast Florida’s vulnerability derives from its geographic location, low elevation, porous geology, unusual ground and surface water hydrology, subtropical weather patterns, and proximity to the Atlantic Ocean and Gulf of Mexico. Its highly engineered water infrastructure and flood control systems play an essential role in assuring that region’s habitability. Water managers must balance demand for potable water and agricultural and landscape irrigation with ground and surface water management, flood control, and the needs of the natural environment including the Everglades, coastal and freshwater wetlands, and coastal marine habitat. Because the region’s hydrological system is very interdependent and interactive, water supply cannot be considered separately from the other elements of the region’s water resources, such as wastewater management, flood control, and stormwater management, which are addressed comprehensively in this study. How and to what extent sea level rise and other climate change impacts are likely to influence Southeast Florida’s water supply, wastewater reuse alternatives, and ground and surface waters are subjects of this research. Engineering options and management strategies for enhancing the resilience of the region’s water systems are described. A Case Study of the City of Pompano Beach Water Utility exemplifies how these tools can be applied to improve the resilience of a local water utility. An adaptive planning framework is outlined for management of the region’s water resources as sea level continues to rise and as drought and more severe storm events worsen with time. Until now, planning has implicitly assumed “stationarity” (Obeysekera, 2009), that environmental conditions, such as climate patterns and sea level, will remain within historic ranges and that only changes in human circumstances, such as population, technology, and the economy, need be considered. This assumption is no longer valid. Unprecedented conditions in the future and uncertain potential consequences demand that climate change be considered in all future planning and policymaking concerning water resources, other infrastructure, and land use. Furthermore, current practices, policies, and regulations should be critically reviewed and revised in consideration of climate change. New ideas and new approaches that may possibly conflict with current thinking will be needed if the forecasted ranges of sea level rise and weather extremes are realized.

Record Information

Source Institution:
Florida International University
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