As the Nation's largest water, earth, and biological science and civilian mapping information agency, the U.S. Geological Survey is relied on to collect high-quality data, and produce factual and impartial interpretive reports. This quality-assurance and data-management plan provides guidance for water-quality activities conducted by the Kansas Water Science Center. Policies and procedures are documented for activities related to planning, collecting, storing, documenting, tracking, verifying, approving, archiving, and disseminating water-quality data. The policies and procedures described in this plan complement quality-assurance plans for continuous water-quality monitoring, surface-water, and groundwater activities in Kansas. U.S. Geological Survey, 2008). NWIS consists of the following four subsystems: the Automated Data Processing System (ADAPS), the Water-Quality Data System (QWDATA), the Groundwater Site Inventory System (GWSI), and the Water-Use Data System (WUDS). Laboratory Medium Analytes Web site