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Groundwater is fresh water located in the subsurface pore space of soil and rocks. It is also water that is flowing within aquifers below the water table.
Follow me to the Groundwater Basics website! There is an immense amount of water in aquifers below the earth's surface. In fact, there is a over a thousand times more water in the ground than is in all the world's rivers and lakes. Here we introduce you to the basics about groundwater.
Helen Nugent. Groundwater is water that has found its way down from the Earth’s surface into the cracks and spaces in soil, sand and rock. It is a critical source of drinking water and a key resource for agriculture, industry and natural ecosystems. However, groundwater supplies are under threat from overuse and pollutants.
Groundwater is water that exists underground in saturated zones beneath the land surface. The upper surface of the saturated zone is called the water table. Contrary to popular belief, groundwater does not form underground rivers.
More information on WARM and shallow groundwater monitoring program is available here. The figures in the links below show current water table levels at multiple WARM sites. The blue line in the figure shows the current depth to water table (in feet), the light gray area shows the historical range between the 10th percentile (i.e., very shallow ...
There is water somewhere beneath your feet no matter where on Earth you live. Groundwater starts as precipitation, just as surface water does, and once water penetrates the ground, it continues moving, sometimes quickly and sometimes very slowly. Eventually groundwater emerges.
The Groundwater database consists of more than 850,000 records of wells, springs, test holes, tunnels,drains, and excavations in the United States. Available site descriptive information includes well location information such as latitude and longitude, well depth, and aquifer.
With records for over 700,000 wells, the interactive water wells map allows users to explore a range of information including the location, depth, and bedrock topography for all recorded wells in Illinois.
Groundwater System. For more than a century, groundwater has been used by industries throughout the Chicago region and for drinking water in most suburban areas. Wells have been drilled into sand and gravel near land surface and into the underlying bedrock.
USGS Groundwater for Illinois: Water Levels. News Bulletins. Explore the NEW USGS National Water Dashboard interactive map to access real-time water data from over 13,500 stations nationwide.