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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]
The current pump was installed in 1945, replacing earlier versions that date to the 1930s. [3] [5] As early as 1957, the pump drew press attention for its popularity. [5]A 1950s Forest Preserve superintendent noted that the well was so well-used that "when the handle is broken, everyone in the [office] knows about it within an hour". [5]
The tunnels lead from the water cribs to Pumping Stations located onshore, then to water purification plants Jardine Water Purification Plant (the world's largest) and the Sawyer Water Purification Plant (operating since 1947), where the water is then treated before being pumped to all parts of the city as well as 118 suburbs. The city has had ...
The U.S. Geologic Survey measured a zero cubic feet per second discharge from the well. The recommended flow rate is 4 to 7 cubic feet per second.
This was the second highest of any county in Illinois, surpassed only by that of Lake County, located in north of Chicago. [31] As of 2022, DuPage County has a poverty rate of 6.7%, much lower than the national and state average. [32] 8% of children under 18 and 6% of seniors in the county are in poverty.
Will County is a county in the northeastern part of the state of Illinois. According to the 2020 census , it had a population of 696,355, an increase of 2.8% from 677,560 in 2010, making it Illinois's fourth-most populous county. [ 1 ]
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Lake Springfield is a 3,965-acre (16.05 km 2) [1] reservoir in the southeast of the capital city of Springfield, Illinois. It is 560 ft (170 m) above sea level. The lake was formed by building Spaulding Dam across Sugar Creek, a tributary of the Sangamon River. It is the largest municipally-owned body of water in Illinois. [1]