From the State Water Resources Control Board:
The GAMA program has updated and expanded its online data tools to enhance access to groundwater information.
Since 2010, the GAMA Groundwater Information System (GAMA GIS) online interface has integrated and standardized groundwater quality data from various resources as part of the Groundwater Ambient Monitoring and Assessment (GAMA) Program. Data can now be queried based on well depth and well type. In addition, the GAMA GIS now directly accesses a library of geographic information that allows users to spatially compare groundwater quality data to various land and groundwater features, geology, disadvantaged communities, and many other layers. To further its mission, a new data connection tool has been implemented to facilitate data uploads into the GAMA GIS.
Data collected and analyzed by the GAMA program is standardized with data from other organizations into the GAMA GIS. This allows users to query data across multiple sources in one location, while providing tools for custom queries. All data is public and available for download. Data download tables have been improved to include standardized data source fields. Data collected and analyzed by the GAMA Program is also available via the state’s open data platform.
The GAMA Program Online Tools web page includes a growing list of map-based applications to evaluate specific groundwater issues and trends, including applications to support efforts like the Sustainable Groundwater Management Act and the Human Right to Water initiative. Enhancements include new tools for analyzing trends in groundwater quality accessed by public drinking water wells, estimates of groundwater quality accessed by domestic wells, and areas of potential groundwater recharge.
For example, applications for 1,2,3 trichloropropane (123 TCP), nitrate, and groundwater age/recharge provide an increased understanding of factors that may affect drinking water quality. The new trend tool analyzes statistically relevant trends in 28 inorganic constituents in groundwater dating back to 1974, and allows a user to select long-term, recent, reversing, and seasonal trends graphically, including the magnitude and directions of water quality trends.
Feedback is welcome. Please visit the GAMA Program Online Tools web page to access all tools listed above.