Datasets for trends in water quality of selected streams and reservoirs used for water supply in the Triangle area of North Carolina, 1989-2013

This U.S. Geological Survey Data Release contains the associated data described in the Scientific Investigations Report, "Trends in water quality of selected streams...本美国地质调查局（U.S. Geological Survey）数据发布套件包含《科学调查报告（Scientific Investigations Report）》中题为"选定河流水质变化趋势……"一文所描述的相关配套数据。