Major Lakes and Mountains of New Jersey: From Hopatcong to High Point

New Jersey's geography surprises with glacial lakes in the north and rugged ridges in the northwest.

Key Lakes

• Lake Hopatcong (Sussex/Morris) — Largest (2,500 acres); boating, fishing, lakeside dining.
• Round Valley Reservoir (Hunterdon) — 2,350 acres; deep (180 ft), clear; trout, scuba; major water supply.
• Greenwood Lake (Passaic) — 1,920 acres; straddles NY border; recreation.
• Lake Wallenpaupack — *Correction: primarily in PA; NJ portion is small.*
• Lake Musconetcong (Sussex/Warren) — 329 acres; fishing, boating.

Major Mountains / High Points

• High Point State Park (Sussex) — 1,803 ft; NJ's highest; Appalachian Trail crosses; monument, views.
• Wawayanda State Park (Passaic/Sussex) — Wawayanda Mtn (1,400+ ft); lake, zoo, AT access.
• Ringwood State Park (Passaic) — Ramapo Mtns; Skylands Manor, botanical garden.
• Stokes State Forest (Sussex) — Kittatinny Ridge; Sunrise Mtn (1,653 ft); AT, Tillman Ravine.
• Ramapo Valley County Reservation (Passaic) — Bearfort Ridge; hiking, views.

The Highlands and Ridge-and-Valley provinces give NJ unexpected topography—rocky ridges, deep valleys, and clear lakes—all within an hour of NYC/Philly.