Search results
Results From The WOW.Com Content Network
Subsurface water is generally plentiful in Illinois. However, irregular gravel deposits from glaciation can lead to difficulties predicting depth of the water table. The Mahomet Aquifer is a large aquifer used as a source for public water supply by many communities in Central Illinois.
Paleogeographic reconstruction showing the Illinois Basin area during the Middle Devonian period. [9] Almost all Silurian rocks in Illinois are deep-water limestone and dolomite deposits; reef habitats were common, and fossils of reef organisms are locally highly abundant, including corals, brachiopods, crinoids, stromatoporoids, and bryozoans. [6]
English: This is a locator map showing Jefferson County in Illinois. For more information, see Commons:United States county locator maps. Date: 12 February 2006:
Rend Lake is a 13-mile (20.9 km) long, 3-mile (4.8 km) wide reservoir located in Southern Illinois in Franklin and Jefferson Counties near the town of Benton.It contains 18,900 acres (76 km 2) of water, stores 185,000 acre-feet (228,000,000 m 3) of water, and supplies over 15 million gallons of water per day to 300,000 persons in over 60 communities.
Illinois 2020 Population Density Map. Illinois is the most populous state in the Midwest region. Chicago, the third-most populous city in the United States, is the center of the Chicago metropolitan area or Chicagoland, as this area is nicknamed.
Pages in category "Geography of Jefferson County, Illinois" This category contains only the following page. This list may not reflect recent changes. M.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Jefferson County is a county located in the southern part of the U.S. state of Illinois. According to the 2020 census, it has a population of 37,113. [1] The county seat is Mount Vernon. [2] Jefferson County contains the Mount Vernon, Illinois micropolitan area. It is located in the southern portion known locally as "Little Egypt".