Chicago dyes its river green per tradition to mark St. Patrick’s Day

The Chicago River was dyed green on Saturday (March 12) as part of an annual tradition marking the St. Patrick’s Day holiday.

CHICAGO (BKNN) The dyeing of the river, a process that begins early in the morning and takes several hours, kicks off a day of festivities including the city’s annual St. Patrick’s Day parade.
Crews poured 50 pounds of dye into the Chicago River, using two large boats to spread the dye.
Event organizers say the green hue lasts in the river for several days.
The midwest city has been dyeing its river green since 1962, according to nextcity.org.