He suffered critical head injuries. The plan was to fly him to Strong Memorial Hospital in Rochester but he died at Wyoming County Community Hospital.
Riley received a commendation for his work at the World Trade Center after the September 11, 2001, terrorist attacks. He was also a veteran of the Gulf War.
Besides his wife Heidi of NYSP-Olean, he leaves behind three daughters ages 10, 8 and 3.
UPDATE: WIVB-TV is reporting that Trooper Ross Riley has died of his injuries. His wife Heidi is the station commander of the Olean barracks.
A New York State Trooper who fell into the gorge at Letchworth State Park this afternoon is being treated at Strong Memorial Hospital in Rochester.
Emergency officials tell www.dansvilleonline.com that the trooper fell during a training exercise at around 1 p.m. on the Castile end of the park and was later taken by Mercy Flight to Rochester.
Troopers have blocked off access to the gorge area.
State police are expected to hold a news conference later today.