Sampled Sites for the U.S. Geological Survey Regional Stream Quality Assessment
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In 2013, the Regional Stream Quality Assessment (RSQA) study was started as part of the U.S. Geological Survey (USGS) National Water Quality Assessment (NAWQA)...
2013年，区域河流质量评估（Regional Stream Quality Assessment，缩写RSQA）研究作为美国地质调查局（U.S. Geological Survey，缩写USGS）国家水质评估（National Water Quality Assessment，缩写NAWQA）的一部分正式启动。
