Pesticide concentration and streamflow datasets used to evaluate pesticide trends in the Nation’s rivers and streams, 1992-2012 (input)

In 1991, the U.S. Geological Survey (USGS) began a study of more than 50 major river basins across the Nation as part of the National Water-Quality Assessment (NAWQA)...1991年，美国地质调查局（U.S. Geological Survey，USGS）启动了一项覆盖全美50余个主要河流流域的研究，作为国家水质评估计划（National Water-Quality Assessment，NAWQA）的组成部分……