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The Great Lakes Water Authority (GLWA) is a regional water authority in the U.S. state of Michigan.It provides drinking water treatment, drinking water distribution, wastewater collection, and wastewater treatment services for the Southeast Michigan communities, including Wayne, Oakland, and Macomb counties, among others.
Aquifer test (or a pumping test) is a field experiment in which a well is pumped at a controlled rate and the aquifer's response (drawdown) is measured in one or more observation wells. [5] Cone of depression is a conically-shaped depression that is produced in a water table as a result of pumping water from a well at a given rate. [4]
In hydrology, a well test is conducted to evaluate the amount of water that can be pumped from a particular water well.More specifically, a well test will allow prediction of the maximum rate at which water can be pumped from a well, and the distance that the water level in the well will fall for a given pumping rate and duration of pumping.
A cone of depression is a circular area surrounding a well where groundwater levels are reduced from pumping. [1] [2] In an unconfined aquifer (water table), this is an actual depression of the water levels. In confined aquifers , the cone of depression is a reduction in the pressure head surrounding the pumped well.
However, by 1920, the system was deemed inadequate for firefighting. It was recommended that the city borrow $97,000 to build a new 200,000 gallon water tower and pumping station, as well as building a nearby dam and improving the distribution system. [3] A bond was approved by voters, and construction of the tower began in June 1921.
A pumpjack is the overground drive for a reciprocating piston pump in an oil well. [1] It is used to mechanically lift liquid out of the well if there is not enough bottom hole pressure for the liquid to flow all the way to the surface. The arrangement is often used for onshore wells. Pumpjacks are common in oil-rich areas.
Pentwater Lake is a water body adjacent to the village of Pentwater, Michigan. Its primary inlet is the Pentwater River ; its outlet is a man-made channel flowing into Lake Michigan . Pentwater Lake has a surface area of 431 acres (174 ha), a maximum depth of 50 feet (15 m), and an average depth of 27 feet (8.2 m).
Michigan County History and atlases, digitized database, including Powers, Perry F., assisted by H.G. Cutler, A History of Northern Michigan and its People (1912) Michigan County names per the Michigan government. Archived July 28, 2009, at the Wayback Machine; Table of dates counties laid out and organized; History of the name Sheboygan