New Jersey's Top Lakes and Rivers: Hopatcong, Round Valley, Delaware River, and More

New Jersey, despite its dense development, boasts a rich network of lakes and rivers offering recreation, water supply, and ecological value.

Major Lakes

• Lake Hopatcong (Sussex/Morris Counties): Largest freshwater lake (2,500 acres). "Lake of the Skylands." Boating, fishing (bass, muskie, hybrid stripers), swimming, ice fishing. Historic steamboat era; now residential shoreline.
• Round Valley Reservoir (Hunterdon County): 3,700 acres, 180 ft deep—NJ's deepest. Pump-storage reservoir (water pumped from South Branch Raritan). Trophy trout, bass, scuba diving, hiking, wilderness camping.
• Lake Nockamixon (Bucks County, PA / Warren/Hunterdon NJ): Actually primarily in PA (Nockamixon State Park). NJ portion is shoreline access. 1,400 acres; boating, fishing, camping.
• Greenwood Lake (Passaic County NJ / Orange County NY): 1,920 acres, 7 mi long. Border-straddling. Boating, fishing, seaplane base, winter ice racing.
• Others: Merrill Creek Reservoir (trout), Manasquan Reservoir (water supply, trails), Spruce Run Reservoir (recreation).

Major Rivers

• Delaware River: Forms NJ-PA border (200+ miles in NJ). National Wild & Scenic River. Shad run, bald eagles, kayaking, tubing, scenic drives (River Road).
• Hudson River: Eastern border (NJ-NY). Tidal estuary to Troy, NY. Palisades cliffs, NYC skyline views, marinas, waterfront parks (Liberty State Park).
• Raritan River: Central NJ spine. North/South Branches converge; tidal to New Brunswick. Tubing, kayaking, fishing, historic sites (Rutgers, Revolutionary War).
• Passaic River: Northern NJ. Great Falls (Paterson)—77 ft, early industrial power. Urban revitalization, fishing, paddling.
• Others: Hackensack (Meadowlands), Mullica (Pinelands), Maurice (Delaware Bay), Toms River (Barnegat Bay).

These waterways define NJ's geography, history, and recreation—surprisingly wild for the "Garden State."