Sangamon River Totally Explained

Everything about The Sangamon River totally explained

The Sangamon River is a principal tributary of the Illinois River, approximately 250 miles (402 km) long, in central Illinois in the United States. It drains a mostly rural agricultural area between Peoria and Springfield. The river is associated with the early career of Abraham Lincoln and played an important role in the early white settlement of Illinois, when the area around was known as the "Sangamon River Country". The section of the Sangamon River that flows through Robert Allerton Park near Monticello was named a National Natural Landmark in 1971.

Description

The river rises from several short headstreams in southern McLean County that arise from a glacial moraine southeast of Bloomington-Normal, Illinois. Part of the moraine is publicly owned as the Moraine View State Recreation Area. The river's course forms a large arc through central Illinois, first flowing east into Champaign County, Illinois, south through Mahomet, then west through Monticello and Decatur, then turning northwest to flow along the north side of Springfield. It receives Salt Creek approximately 25 miles (40 km) north-northwest of Springfield; then the river turns west, forming the southern boundary of Mason County with Menard and Cass counties. It joins the Illinois River from the east approximately 10 miles (16 km) northeast of Beardstown. The Sangamon is impounded in Decatur to form Lake Decatur, constructed in 1920-1922 to provide a water supply for Decatur. This lake, formed by damming the main stem of the river, with no control over upstream land uses, has had major problems with siltation and agricultural pollution. The lake often has excessive nitrate levels from agricultural runoff. Many times the city was forced to warn people not to allow babies to consume water in Decatur because of "blue baby syndrome", Methemoglobinemia. Decatur has now installed nitrate treatment to avoid this problem.
The upper Sangamon, between Mahomet and Monticello, runs along the face of the terminal moraine of the Sangamonian Substage of the Wisconsin Glaciation, about 70,000 to 10,000 years before present. During the Sangamonian Substage, the ice advanced rapidly from east to west, leaving a terminal moraine parallel to the modern Sangamon River. The ice stagnated and melted behind this moraine, without the meltwater overtopping the terminal moraine. Along this stretch, the eastern part of the watershed of the Sangamon therefore consists of short creeks, two to three miles (3-5 km) in length, that drain the face of the moraine. This forms an asymmetric watershed typical of rivers formed along the face of a terminal moraine.

History

   The river was home to many different groups of Native Americans in the centuries before the arrival of Europeans. The name of the river comes from a Pottawatomie word Sain-guee-mon (pronounced "sang gä mun") meaning "where there's plenty to eat." In the 18th century, groups of the Kickapoo settled along the river. In the middle 18th century, the region near the river was the scene of a conflict between the Illini and Fox as part of the larger French and Iroquois Wars. French traders were active in the region throughout the middle 18th century when it was part of the Illinois Country.
   The first U.S. settlers arrived in the region in the 1810s. In 1821, Elijah Iles built a log-framed store, the first commercial building in Springfield. Groups of Cumberland Presbyterians settled the river valley beginning in 1825, giving the region a distinctive culture identified and described at the turn of the 20th century by Edgar Lee Masters.
   Abraham Lincoln arrived with his family in the area in 1830 to settle a section of government land bisected by the river. The site, now Lincoln Trail Homestead State Memorial, was selected by Lincoln's father after the family had economic and land-title difficulties in Indiana. The 21-year-old Lincoln helped build a 16 foot by 16 foot (4.8 m by 4.8 m) cabin along the river. The following year in 1831, he canoed down the river to homestead on his own near New Salem in Menard County northwest of Springfield. Later that year he floated down the river with companions on a flatboat to the Illinois River, and then following the Mississippi River to New Orleans.
   Lincoln was impressed by the navigational difficulties on the river, especially during the arrival of the first steamship, the Talisman, a 15-ton steamer," up the river to Springfield in March of 1832. Some sources state that Lincoln himself piloted the first steamship up the Sangamon to Springfield, accomplishing this feat with many men, almost as large as Lincoln, with axes to chop through whatever trees impeded the journey. More likely Lincoln acted as a guide and axeman . In later years, he told of taking a steamship three miles (5 km) into the prairie after losing his way on the Sangamon during a flood. During his first campaign for the Illinois General Assembly in 1832, he made navigational improvements on the river a centerpiece of his platform.

The river today

Despite its environmental problems, the Sangamon River is a focus of recreation for the people of Central Illinois. Key parklands along the river, moving from upstream to downstream, include Robert Allerton Park, the parks bordering Lake Decatur, Rock Springs Conservation Area, Lincoln Trail Homestead State Park, Springfield's Carpenter Park, Lincoln's New Salem, and the Sanganois State Fish and Wildlife Area.

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