The move follows the drowning last week of a customer but Purdue tells the Albany Times Union the action isn't related.
One of the Hudson River Rafting Company’s river guides, Rory F. Fay, is being held in Hamilton County Jail on a charge of criminally negligent homicide in that incident.
State police said Fay was intoxicated when he led a trip down the Indian and Hudson Rivers a week ago. Two passengers were "ejected from the raft in whitewater conditions."
One passenger made it safely to shore but 53-year-old Tamara Blake, from Columbus, Ohio, was swept away and drowned.
(The Associated Press contributed to this report)