Clerks near Herrin IL. Find Herrin, IL clerk, including county, city, and circuit clerk, and clerk of court. Clerks provide information on public court records and legal documents, criminal, jail, and arrest records, marriage licenses, divorce, judicial, and probate records, businesses liens, notary services, real estate taxes and voter registration services. Showing 1-16 of 16 Clerks.
Wing dam in a man-made river bed. A wing dam or wing dike is a manmade barrier that, unlike a conventional dam, only extends partway into a river. These structures force water into a fast-moving center channel which reduces the rate of sediment accumulation while slowing water flow near the riverbanks.
Dams block the flow of a river or stream and create a lake or reservoir behind them, which acts as a source of stored energy (a battery is another example of a reservoir of stored energy). The dam raises the surface water up to a great height, giving it potential energy, the potential to do work.Water flows from the reservoir and through a dam by way of a special intake gate called a penstock. It's kind of like one of those water tunnels you slide through at a water park in the summer. Water flow rate is in cubic meters per second (m 3 /s). 2  Acceleration due to gravity is 9.81 meters per second squared (m/s 2). 3  Height is in meters (m). 4  Coefficient of efficiency ranges from 0 to 1, with modern power plants having the highest efficiency.