The following questions (1-10) are based on the Army Corps of Engineers Mississippi River Maps (Cairo to the Gulf) and the Light List. AHP = Above Head of Passes LMR = Lower Mississippi River UMR = Upper Mississippi River OHR = Ohio River ACOE = Army Corps of Engineers
The charts show a circle with two black quadrants located at mile 846.0 AHP. What does this indicate?
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Tip: press A-D to answer