Round Valley Reservoir

Round Valley Reservoir: access and conditions

On the map, Round Valley Reservoir is centered near 40.6139, -74.8227. It lies at roughly 381 feet of elevation. Maximum depth is around 180 feet. The outflow = carries the outflow.

Nearby water includes Spruce Run Reservoir (New Jersey, 6 mi), Lake Nockamixon (Pennsylvania, 23 mi) and Lake Hopatcong (New Jersey, 25 mi). In all, 12 lakes in New Jersey are covered here.

There is no water temperature sensor here, so only air conditions are shown. Algae blooms are seasonal and local: look for posted signs at the ramp or park entrance. Most New Jersey day-use areas open for the summer season and close outside it.

There is a station 6 miles away, Spruce Run Reservoir at Clinton NJ, but it does not measure this lake. Local marinas and park offices usually know the current state of the water better than any feed. This page shows no water level for Round Valley Reservoir because no agency publishes one that can be read automatically.

Absence from these datasets does not mean the water is closed, only that no agency lists a beach. No agency lists a named swimming spot at Round Valley Reservoir. Shoreline access here is likely informal. The nearest mapped swimming spot is Huylers Beach on Oradell Reservoir, roughly 52 miles away.