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Why does the city of Chicago dye its river green? How long does the color last? - AS USA
![St. Patrick's Day: All about NYC's parade and the Chicago River dyeing, U.S.](https://upload.wikimedia.org/wikipedia/commons/a/a6/White_House_fountain_dyed_green_for_Saint_Patrick%27s_Day_2011.jpg)
Saint Patrick's Day in the United States - Wikipedia
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Photos: How St Patrick's Day Is Different in Ireland and the US
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Chicago Dyes River Green in Preparation for St. Patrick's Day – NBC Chicago
![St. Patrick's Day: All about NYC's parade and the Chicago River dyeing, U.S.](https://i2-prod.irishstar.com/incoming/article29434770.ece/ALTERNATES/s1227b/0_image_6483441-1JPG.jpg)
In pictures: Chicago dyes river green and hosts 68th annual St Patrick's Day parade - Irish Star
![St. Patrick's Day: All about NYC's parade and the Chicago River dyeing, U.S.](https://www.explore.com/img/gallery/the-biggest-st-patricks-day-celebrations-in-the-us/l-intro-1667686592.jpg)
The Biggest St. Patrick's Day Celebrations In The US
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Erin go Bragh! St. Patrick's Day parades returning to Chicago; river to be dyed green again Saturday - CBS Chicago
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St. Patrick's Day Chicago, Green River Dyeing & Parades
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St. Patrick's Day: The biggest parties across United States to celebrate luck of the Irish
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Why Chicago Turns Its River Green for St. Patrick's Day
![St. Patrick's Day: All about NYC's parade and the Chicago River dyeing, U.S.](https://i2-prod.irishstar.com/incoming/article29434773.ece/ALTERNATES/s1200/0_GettyImages-1248039865.jpg)
In pictures: Chicago dyes river green and hosts 68th annual St Patrick's Day parade - Irish Star