The water in the river will retain its brilliant green color for several days, including on St. Patrick’s Day on March 17. The water retains a shade of green for a while after the initial dyeing ...

The water in the river will retain its brilliant green color for several days, including on St. Patrick’s Day on March 17.

While the water in the river will retain a green color for several days, Choose Chicago notes "the brilliant green color only lasts a few hours." Still, the water retains a shade of green for a ...

and the water maintains that brilliant hue for the iconic holiday. The water in the river will retain a green color for several days, including likely on St. Patrick’s Day on March 17.