Sources/Usage: Some content may have restrictions. Is the water really any different than other groundwater? Some bottled water is advertised as "artesian well water". Sometimes it is because the local drinking water is of lower quality and sometimes it is just a convenience. If an aquifer is under enough pressure, an artesian well tapping the aquifer can result in pressurized water shooting above the land surface.īottled water is a very popular beverage nowadays all over the world. But groundwater can also sink into deep aquifers where it takes thousands of years to move back into the environment, or even go into deep groundwater storage, where it might stay for much longer periods. If the rock has characteristics that allow water to move relatively freely through it, then groundwater can move significant distances in a number of days. Water moving below ground depends on the permeability (how easy or difficult it is for water to move) and on the porosity (the amount of open space in the material) of the subsurface rock. As the diagram shows, the direction and speed of groundwater movement is determined by the various characteristics of aquifers and confining layers of subsurface rocks (which water has a difficult time penetrating) in the ground. If groundwater wants to be a member in good standing of the water cycle, then it can't be totally static and stay where it is. Water moving downward can also meet more dense and water-resistant non-porous rock and soil, which causes it to flow in a more horizontal fashion, generally towards streams, the ocean, or deeper into the ground. If the water meets the water table (below which the soil is saturated), it can move both vertically and horizontally. Some of the precipitation that falls onto the land infiltrates into the ground to become groundwater.
Groundwater flows underground.at different rates At a certain depth below the land surface, the spaces between the soil and rock particles can be totally filled with water, resulting in an aquifer from which groundwater can be pumped and used by people. It occupies the spaces between soil and rock particles. Generally, water underground is more like water in a sponge. Even though there are some caverns, lava and ice tubes, and horizontal springs that can carry water, the vast majority of underground water occupies the spaces between rocks and subsurface material.
Have you ever heard that there are rivers of water flowing underground? Do you think it is true? Actually, it is pretty much a myth. Life on Earth depends on groundwater just as it does on surface water. People have been using groundwater for thousands of years and continue to use it today, largely for drinking water and irrigation. As part of the water cycle, groundwater is a major contributor to flow in many streams and rivers and has a strong influence on river and wetland habitats for plants and animals. And even though groundwater is unseen, it is moving below your feet right now. There are also vast amounts of water that are unseen- water existing in the ground. You see water all around you every day as lakes, rivers, ice, snow and rain. Groundwater discharge emerges from springs in the Redwall Limestone wall of the Grand Canyon into the Colorado River at Vasey's Paradise.
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