A Minnesota Boat Club eight-man scull plies the waters of the Mississippi River on a training row in St. Paul early Aug. 19, 2009. (John Doman / Pioneer Press) Wondering how long the Mississippi ...

(Ginger Pinson / Pioneer Press) In 1926, the Minnesota Department of Health declared the stretch of the Mississippi River that ran through St. Paul a threat to the public’s well-being.

The Mississippi River is the nation’s most endangered river ... provides funds for recovery and oversees preparedness efforts, like its flood maps that predict risks in different areas.

Flooding hasn’t been a problem along the Minnesota stretch of the Mississippi this year. But the river faces other challenges, including pollution from agriculture, said Whitney Clark ...