Illinois River Quiz
Chicago region hydrology, tributaries, navigation, basin (10 questions).
Illinois River Quiz: Quick Study Notes
The Illinois River is a vital waterway with a rich history, particularly concerning its connection to Chicago’s development and the reversal of its flow. This quiz tests your knowledge of its hydrology, tributaries, navigation, and environmental significance within its expansive basin. Understanding this river is key to appreciating Illinois’s geography and engineering marvels.
Key Features of the Illinois River
Hydrologically linked to Lake Michigan via the Chicago Sanitary and Ship Canal, an engineering feat that reversed sections of the Chicago River to flow into the Illinois.
Formed by the meeting of the Des Plaines and Kankakee Rivers near Channahon, Illinois, before flowing southwest.
A crucial part of the inland waterway system, facilitating barge traffic for bulk commodities like grain and coal, managed by locks and dams.
Faces significant ecological challenges, notably from invasive species like Asian Carp, which threaten native aquatic ecosystems and potentially the Great Lakes.
Key Takeaways
- The Illinois River is central to Illinois’s geography and commerce.
- Its flow was famously altered to connect to Lake Michigan and protect Chicago’s water supply.
- It forms from the Des Plaines and Kankakee Rivers.
- A critical component of the Mississippi River System for navigation.
- Barge traffic, primarily grain and coal, is vital for the region’s economy.
- Asian Carp are a major ecological concern, posing a threat to native species.
- It joins the Mississippi River near Grafton, Illinois.
Frequently Asked Questions
Where does the Illinois River start and end?
The Illinois River forms from the confluence of the Des Plaines and Kankakee Rivers near Channahon, Illinois. It flows approximately 273 miles (439 km) in a generally southwestward direction to join the Mississippi River near Grafton, Illinois.
How was the Illinois River’s flow direction modified?
Its connection to Lake Michigan via the Chicago Sanitary and Ship Canal in the early 20th century reversed the flow of the Chicago River, diverting water from Lake Michigan and Chicago’s sewage into the Illinois River system, preventing pollution of Chicago’s drinking water source.
What is the significance of the Illinois Waterway for navigation?
The Illinois Waterway is a vital commercial navigation route, connecting the Great Lakes region to the Mississippi River system and the Gulf of Mexico. It is primarily used for transporting bulk commodities like grain, coal, petroleum, and other raw materials via barges, facilitated by a system of locks and dams.
Which major cities are located along the Illinois River?
Key cities situated along the Illinois River include Joliet, Ottawa, Peoria, and Pekin. These cities have historically benefited from the river’s resources, navigation, and strategic location within the state.
What environmental challenges does the Illinois River face?
The Illinois River faces significant environmental challenges, including pollution from agricultural runoff and industrial discharges, habitat degradation, and the pervasive threat of invasive species, most notably Asian Carp. These carp threaten native fish populations and ecological balance, leading to extensive control efforts.
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