[미국] LA 지역에서 지속가능 물공급 위해 WaterSMART 수행
에스테반 로페즈(Estevan Lopez) 국장은 변화하는 인구 통계, 기후 변화 및 이용 가능한 물 공급에 대한 경쟁적 관심을 살펴보고, 로스앤젤레스 지역의 미래 수자원 요구를 충족시킬 수 있는 기능을 확인하는 로스앤젤레스 유역 연구를 발표했다.
연구에 따르면 2035년에는 약 16만 에이커 피트 지역에 대한 물 공급 부족이 예상되며, 2095년에는 44만 에이커 피트 혹은 25%의 물 부족이 예상된다.
로페즈 위원장은 “LA 지역의 우리 파트너들은 현재와 미래의 지속가능한 물공급을 보장하기 위해 노력하고 있다”고 말했다. 이어 “이 유역 연구는 주의 수자원 프로젝트 및 콜로라도강 송수로에 대한 의존도를 줄이면서 미래의 물 공급을 위한 다양한 대안을 연구하는데 필요한 정보를 우리 파트너들에게 제공한다”고 밝혔다.
이 유역 연구는 개간지의 WaterSMART 프로그램의 일환으로 수행됐으며, 개간지, LA 카운티 홍수 통제 지구 및 20개의 현지 프로젝트 파트너 간에 비용을 부담했다. 이것은 개간지 유역 연구 프로그램 웹사이트 http://www.usbr.gov/watersmart/bsp/에서 이용할 수 있다.
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RECLAMATION : STORMWATER CAPTURE AND RECHARGE CRITICAL TO SUSTAIN WATER SUPPLIES IN LOS ANGELES AREA
Bureau of Reclamation Commissioner Estevan López has released the Los Angeles Basin Study that looks at the changing demographics, climate change and competing interests for available water supplies and identifies options to meet the water needs of the Los Angeles area into the future. The study found that there is a potential water supply deficit for the region of approximately 160,000 acre-feet-per year by 2035 and 440,000 acre-feet-per-year or 25-percent less water than the region is projected to need in 2095.
"Reclamation and our partners in the Los Angeles area are working to assure a sustainable water supply now and into the future," Commissioner López said. "The basin study provides our partners the information that they need to further study the various alternatives for future water supplies while reducing their reliance on the state water project and the Colorado River Aqueduct."
The study compiled and assessed the potential impacts of climate change in the Los Angeles area. These impacts include possible variations in precipitation and changes in the timing and intensity of storms through 2095, temperature increases of 3.5 degrees to 4 degrees Fahrenheit along the coast and 4.5 degrees to 5.5 degrees Fahrenheit in the mountains and desert, an increase in sea-level of 5-24 inches by 2050 and 17-66 inches by 2100, and an increased wildfire risk.
The Los Angeles area relies on imported water from the state water project and the Colorado River for about 57 percent of its current water supply. These imported supplies may be negatively impacted in the future by climate change, drought, and increasing demands. To address this increased uncertainty, the study focused on local water supply sources such as groundwater, which is an important component of the area’s overall water supply portfolio.
The Los Angeles County Flood Control District, a partner in this study with Reclamation, placed a strong emphasis on stormwater capture for groundwater recharge. In addition, recycled water and other local supplies were studied to assist with groundwater recharge. These adaptive concepts were divided among local, regional, storage solutions and management solutions.
The Los Angeles Basin covers approximately 2,040 square miles and features a population of 9.9 million people that is projected to increase to more than 11 million through the next several decades. Nearly 92 percent of Los Angeles County's population resides within the basin, more than one-fourth of the State of California's 38.8 million residents.
This basin study was conducted as part of Reclamation's WaterSMART Program and was cost-shared between Reclamation, Los Angeles County Flood Control District and 20 local project partners. It is available on Reclamation's Basin Study Program website at http://www.usbr.gov/watersmart/bsp/.
WaterSMART is the Department of the Interior's sustainable water initiative that uses the best available science to improve water conservation and help water resource managers identify strategies to narrow the gap between supply and demand. For more information on the WaterSMART program, visit http://www.usbr.gov/WaterSMART.
[출처 = Water World / 2016년 11월 21일]