Delaware Lake

Reservoir in New Jersey · 39 acres · near Knowlton

Delaware Lake has 1 boat ramp listed as public.

Past algal blooms

Harmful algal blooms reported on this water (state reports compiled by U.S. EPA): 2020 and 2023 to 2025.

state reports compiled by U.S. EPA · checked October 18, 2026

Motors: Electric motors only (as the agency lists it for the launch here; check the posted rules before you go)

Boating rules

Outboard motors: electric only · all of Delaware Lake rule

From the boating rules map of New Jersey Department of Environmental Protection GIS: developed using NJDEP Geographic Information System digital data, but this secondary product has not been verified by NJDEP and is not state-authorized or endorsed, read October 18, 2026. A map of rules is a guide: the regulation's text and the posted signs govern.

Depth contours in feet from NJDEP (fieldwork 2024); deepest point about 13 ft. Lake levels and bottoms change; not for navigation.

Launches

Delaware Lake Boat Launch · Boat ramp · near Knowlton