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An artesian well is a well that brings groundwater to the surface without pumping because it is under pressure within a body of rock or sediment known as an aquifer. [1] When trapped water in an aquifer is surrounded by layers of impermeable rock or clay, which apply positive pressure to the water, it is known as an artesian aquifer . [ 1 ]
Since the 1970s, the springs have stopped flowing several times because too much water has been taken out from the aquifer for human consumption (more than 270,000 m3 per day in the 1970s [2]). The Baotu Spring is part of a cluster of about 20 named springs. Water age estimates suggest that its water originates from shallow circulation. [3]
The consequences of lost circulation can be as little as the loss of a few dollars of drilling fluid, or as disastrous as a blowout and loss of life, so close monitoring of tanks, pits, and flow from the well, to quickly assess and control lost circulation, is taught and practiced.
Hornsby, Tennessee wells including one at Hornsby Elementary School; Ludowici Well, Ludowici, Georgia; Maka Yusota, Savage, Minnesota; McConnell Springs Park, Lexington, Kentucky; Olympia Brewery, Olympia, Washington (see Olympia Brewing Company#Use of artesian water) Polk Theater well, Lakeland, Florida; possibly used in the loop of the first ...
Non-artesian springs may simply flow from a higher elevation through the earth to a lower elevation and exit in the form of a spring, using the ground like a drainage pipe. Still other springs are the result of pressure from an underground source in the earth, in the form of volcanic or magma activity.
Wiley's Well is a natural artesian well in the Colorado Desert of Southern California as well as the name of the surrounding region. It is west of Blythe, California , in Riverside County . It is named after Palo Verde storekeeper and postmaster A.P. Wiley who, in 1907, made a shallow well deeper that was dug in 1876 by a stagecoach company ...
At that time artesian heads in the system were 40 feet (12 m) above land surface and no pumps were needed; by 1898, it was estimated that between 200 and 300 wells had been finished in South Georgia, and by 1943, about 3,500 wells had been completed in the six coastal counties of Georgia.
A study in an arid agricultural region of Arizona [3] showed that, even with a water level recovery of 100 ft after groundwater pumping was stopped, the land surface continued to subside for decades. This is a result of the continued dewatering of aquitards (fine-grain layers that slow the movement of groundwater) from stresses mentioned in the ...