An annual tradition that dates back over half a century, the transformation of the Chicago River into a green waterway took place at 10 a.m. Saturday morning.

St. Patrick’s Day weekend celebrations are officially here, with an iconic Chicago tradition kicking off festivities Saturday morning as the Chicago River was dyed green. Beginning shortly after 10 a.

Chicago tradition is just moments away from beginning, as the Chicago River dyeing is set to take place to kick off weekend ...