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Watch the Chicago River turn green for St. Patrick's Day ☘️

Holidays Yesterday
Since 1962, the Chicago Plumbers Union Local 130 have dyed the Chicago River green to celebrate St. Patrick's Day. A time-lapse video shows exactly how it's done.

It's a tradition that dates to 1962: The Chicago River dyed green for St. Patrick's Day.

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The Chicago River turns green for St. Patrick's Day. This time-lapse video shows the handiwork of the Chicago Plumbers Union Local 130, who've been dying the river for 55 years. The dye typically lasts for 24 to 48 hours. Video: Lindsey Engelbert

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Update: The River is now totally for The dyeing process is complete and for the next 24 to 48 hours the luck of the will run thru.

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Gallery: Annual greening of the Chicago River draws visitors downtown on St. Patrick's Day via

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Always love seeing the Chicago River turn green 💚

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