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Ten-year floods have a 10% chance of occurring in any given year (P e =0.10); 500-year have a 0.2% chance of occurring in any given year (P e =0.002); etc. The percent chance of an X-year flood occurring in a single year is 100/X. A similar analysis is commonly applied to coastal flooding or rainfall data.
The American Bottom is part of the Mississippi Flyway used by migrating birds and has the greatest concentration of bird species in Illinois. The flood plain is bounded on the east by a nearly continuous, 200- to 300-foot high, 80-mile (130 km) long bluff of limestone and dolomite, above which begins the great prairie that covers most of the ...
Researchers originally thought the flat, open terrain in this area reflected Cahokia's location on the Mississippi's alluvial flood plain, but instead soil studies have shown that the landscape was originally undulating ridge and swale topography. In one of the earliest large-scale construction projects, the site had been expertly and ...
St. Philippe was strategically located near the bluffs that flank the east side of the Mississippi River in the vast Illinois floodplain known as the "American Bottom". The village was located three miles north of Fort de Chartres. Because of many decades of severe seasonal flooding, St. Philippe and the fort were both abandoned before 1765.
The Edith Farnsworth House, formerly the Farnsworth House, [6] is a historical house designed and constructed by Ludwig Mies van der Rohe between 1945 and 1951. The house was constructed as a one-room weekend retreat in a rural setting in Plano, Illinois, about 60 miles (96 km) southwest of Chicago's downtown.
After water overtopped a reservoir dam and forced residents of a small Illinois city to ... Washington County was under a flash flood warning until 4:30 p.m. CT after the region received over 5 ...
Le Grand Champ (French for "the big field") is an alluvial floodplain, also called a bottom, extending along the Mississippi River in Ste. Genevieve County, Missouri. [1]The American Bottom stretches from St. Louis south along the east side of the Mississippi River all the way to the mouth of the Kaskaskia River, just north of Fort Kaskaskia, Illinois.
1:37 p.m. Belleville Fire Department is responding to South 29th Street for a tree on a residence, according to the St. Clair County Emergency Management Agency.
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