This map layer contains the shallowest principal aquifers of the conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands, portrayed as...

The National Groundwater Information System (NGIS) is a spatial database for GIS specialists that contains a range of groundwater information submitted by States and...

A representation of the location and key attributes of all drillholes within South Australia. Drillholes contained within the dataset may be currently active or historic and...

ABARES has tried to make the information in this product as accurate as possible. However, it does not guarantee that the information is totally accurate or completed....

The data shows the distribution of groundwater flow systems at a national scale. These flow systems were based on their hydrogeological characteristics using a combination of...

Groundwater wells and springs. This database contains records of boreholes, dug wells, springs, and site investigations. Data are derived from GSI drilling, fieldwork and...

This dataset contains bedrock units created by grouping bedrock formations and members based on their hydrogeological properties and other factors.

The National Karst Database consists of point features, locating the centre (or in the case of a cave, the entrance) of karst landforms grouped into 8 types and records details...

Areas surrounding individual groundwater sources are termed source protection areas (SPAs). Two source protection areas are recommended for delineation: • Inner Protection Area...

USGS GIS data of the United States water resources maps, soil, hydrology, and weather. Contains multiple links to useful and informative websites.

From the site: "This dataset is a coverage of the physiographic provinces, aquifer outcrops and recharge rates for Tennessee. Each polygon is attributed with its associated...

From the site: "The Geographic Information Retrieval and Analysis System (GIRAS) was developed in the mid 70s to put into digital form a number of data layers which were of...

From the site: "This dataset and the accompanying Data Series report was created to assist in analysis and interpretation of water-quality data provided by the U.S. Geological...

From the site: "The USGS maintains a network of wells to monitor the effects of droughts and other climate variability on groundwater levels. The network consists of a national...

From the site: "This map layer contains the shallowest principal aquifers of the conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands, portrayed as...

From the site: "The Real Time Groundwater Level Network contains water levels and well information from wells with "real time" data transmission instrumentation. This network...

Paper describing Appalachian Basin Hydrogeology; includes groundwater statistics, maps, diagrams, and charts.

The World-wide Hydrogeological Mapping and Assessment Programme (WHYMAP) compiles data on groundwater from national, regional and global sources, and visualises them as printed...

The HÜK250 (INSPIRE) describes the hydrogeological characteristics of the upper continuous aquifers in Germany at a scale of 1:250,000. According to the Data Specification on...