National Water Quality Portal Sites 2023

The Water Quality Portal (WQP) is the premiere source of discrete water-quality data in the United States and beyond. This cooperative service integrates publicly available water-quality data from the United States Geological Survey (USGS), the Environmental Protection Agency (EPA), and over 400 state, federal, tribal, and local agencies. Learn More Most attributes in this dataset are related to each station's characteristics - this data can be joined to a variety of historic sampling and testing information available on waterqualitydata.us. Users can also explore more information about each site and monitoring history by clicking on either of the URLs at the end of the attribute table or pop-up for each point. Per waterqualitydata.us: Data from the NWIS (USGS) was last updated on 9/28/2023. Data from Stewards (ARS) was last updated on 10/30/2022. Data from WQX (EPA) was last updated on 9/28/2023.水质数据门户（Water Quality Portal, WQP）是美国乃至全球离散水质数据的顶级数据源。该合作服务整合了来自美国地质调查局（United States Geological Survey, USGS）、美国环境保护署（Environmental Protection Agency, EPA）以及超过400个州级、联邦级、部落级与地方级机构的公开可用水质数据。了解更多：本数据集的绝大多数属性与各监测站点的特征相关——此类数据可与waterqualitydata.us平台提供的各类历史采样与检测信息进行关联匹配。用户亦可通过点击属性表末尾或各点位弹窗中的任一链接，查询各监测站点及监测历史的详细信息。据waterqualitydata.us平台公示：美国地质调查局（USGS）的国家水信息系统（National Water Information System, NWIS）数据最后更新于2023年9月28日；Stewards（ARS）数据最后更新于2022年10月30日；美国环境保护署（EPA）的水质交换系统（Water Quality Exchange, WQX）数据最后更新于2023年9月28日。