The south and east sides of Rocky Mountain drain into the headwaters of Rondout Creek, thence into the Hudson River, and into New York Bay.

The northeast and northwest sides of Rocky Mtn.

Rocky Mountain is one of the 35 peaks in the Catskills greater than 3,500 feet elevation, and is a required ascent for membership in the Catskill Mountain 3500 Club.

The ascent involves bushwhacking as there is no trail to the summit.

This article about a location in Ulster County, New York is a stub.