The Taconic Range ridgeline continues north from Potter Mountain as Brodie Mountain and south as Poppy Mountain. It is bordered to the west across the Wyomanock Creek valley by Rounds Mountain. The west side of the mountain drains into Kinderhook Creek, the Hudson River and Long Island Sound. The east side drains into Secum Brook, thence Pontoosuc Lake, the Housatonic River, and Long Island Sound.