Thảm họa lớn như bão, hạn hán và lũ lụt thường xuyên qua các ranh giới thẩm quyền tài phán và tự nhiên. Những sự kiện này tàn thiệt hại và phá hủy bất kể của nhà nước, địa phương, hoặc biên giới quốc gia. Các nhà khoa học dự đoán rằng bởi vì một số tác động của biến đổi khí hậu như mực nước biển dâng và sự nóng lên của đại dương, chúng ta có thể mong đợi thảm họa lớn hơn, rộng rãi hơn trong tương lai. Để giảm bớt tác động của các loại sự. | 5 County Regional-Based Hazard-Mitigation Case Studies INTRODUCTION Large disasters such as hurricanes droughts and floods often cross jurisdictional and natural boundaries. These events wreak damage and destruction regardless of local state or national borders. Scientists are predicting that because of certain climate change impacts such as sea-level rise and the warming of the oceans we can expect larger more widespread disasters in the future. In order to reduce the impact of these types of events in the future it will be necessary for community leaders to look past their local jurisdiction to county regional and in some cases internationalbased approaches. This chapter presents three case studies that clearly illustrate how multiple jurisdictions and communities can come together to address a shared risk. The first case study concerning the Living River Flood Management project in the Napa CA River Valley highlights several elements critical to the success of a regional approach to risk reduction such as a county-wide planning process involvement of the private sector detailed knowledge of the risk and potential mitigation measures and participation by the entire population of the county in making the plan a reality. The second case study examines how the International Flood Mitigation Initiative IFMI brought together government officials scientists advocates 125 2009 by Taylor Francis Group LLC GLOBAL WARMING NATURAL HAZARDS AND EMERGENCY MANAGEMENT environmentalists businesspeople and everyday people from Minnesota North Dakota and Manitoba Canada to build a consensus around a series of actions designed to reduce flood impacts in the Red River Basin. The final case study of Seattle Project Impact details how Seattle leveraged seed money from FEMA s Project Impact initiative to better understand their earthquake risk and to design and implement three local mitigation programs to protect local home owners schoolchildren and small businesses which were then .