Public-Supply Water Use in the Cumberland River Watershed in 2010 and Projections of Public-Supply Water Use to 2040

Adequate water resources are vital for municipal needs in the Cumberland River watershed. As a result of continuing population growth, moderate to extreme droughts and floods, demands for competing water resources, and aging infrastructure, the evaluation of ongoing water-resources issues has become increasingly important to Federal, State, and local water-resources managers. In order to assist local decision makers in the watershed, the U.S. Geological Survey (USGS) began a study in 2013 to document groundwater and surface-water withdrawals. Estimates of water use for public supply were projected in 10-year increments through 2040 and were based on 2010 public supply water data and population projections for 2020 through 2040. The data for public supply water systems located in Tennessee were obtained from the Tennessee Department of Environment and Conservation, Division of Water Resources. The data for public-supply water systems located in Kentucky were obtained from the USGS office in Louisville, Kentucky. This dataset includes U.S. Census Population Data from the U.S. Census Bureau for 2000 and 2010; population projections from the Center for Business and Economic Research in Tennessee; and population projections from the Kentucky State Data Center for 2020, 2030, and 2040. Also included is a sample calculation of water-use projections in 2020, 2030, and 2040 for one of the public-supply systems in the Cumberland River watershed; Franklin Water Department - Franklin, Williamson County, Tennessee. Data in this release were used to support the projections and trends analysis published in the companion report Robinson (2017). Reference Robinson, J.A., 2017, Estimated use of water in the Cumberland River watershed in 2010 and projections of public-supply water use to 2040: U.S. Geological Survey Scientific Investigations Report 2017-xxxx, xx p., http://dx.doi.org/10.3133/sir2017XXXX.

充足的水资源对于坎伯兰河流域（Cumberland River watershed）的市政用水需求至关重要。受持续人口增长、中等到极端干旱与洪涝事件、水资源竞争需求以及基础设施老化等因素影响，对当前水资源相关问题的评估对于联邦、州级及地方水资源管理者而言愈发重要。为协助该流域内的地方决策者开展工作，美国地质调查局（U.S. Geological Survey, USGS）于2013年启动一项研究，对地下水与地表水取用量进行记录。本研究以2010年公共供水用水数据及2020至2040年的人口预测为基础，将公共供水用水量估算值以10年为间隔推演至2040年。田纳西州境内公共供水系统的相关数据，取自田纳西州环境与保护部水资源司（Tennessee Department of Environment and Conservation, Division of Water Resources）。肯塔基州境内公共供水系统的相关数据，则取自美国地质调查局肯塔基州路易斯维尔办事处。本数据集包含美国人口普查局（U.S. Census Bureau）发布的2000年及2010年人口普查数据；田纳西州商业与经济研究中心提供的人口预测数据；以及肯塔基州数据中心（Kentucky State Data Center）发布的2020、2030及2040年人口预测数据。数据集还包含坎伯兰河流域内某公共供水系统——田纳西州威廉姆森县富兰克林市富兰克林水务部门——2020、2030及2040年的用水量预测示例计算结果。本次发布的数据，用于支撑配套报告《Robinson（2017）》中刊载的用水量预测与趋势分析内容。参考文献：Robinson, J.A., 2017, 《2010年坎伯兰河流域水资源使用估算及2040年公共供水用水量预测》：美国地质调查局科学调查报告2017-xxxx，共xx页，http://dx.doi.org/10.3133/sir2017XXXX。