Some of the worst flooding occurred in the Chemung River and its principal tributaries, the Tioga, Canisteo, and Cohocton Rivers. Floods with greater than 100 year recurrence frequency level occurred at almost every point in the basin. The peak flows were reduced somewhat in the Canisteo River by the Arkport and Almond Reservoirs, but record floods were still observed downstream of these dams.

Flooding on the West Branch of the Susquehanna River was reduced somewhat by flood-control reservoirs, but the lower reaches of the West Branch still experienced record high peak flows. It was estimated that the flood peak at Williamsport, Pennsylvania, would have been up to 4 feet higherif it had not been for the reservoirs. Major flooding was also observed on all tributaries downstream of the West Branch Susquehanna River down to the Juniata River.

The Juniata River basin experienced significant flooding, but it was lessened by flood-control reservoirs, in particular, an unfinished Raystown Lake reservoir.

A file containing stage data of the Susquehanna River basin can be found here.

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