Stony Brook is a stocked trout stream in Hunterdon and Mercer counties, New Jersey. 12.6 of its 19.3 miles (65%) run through mapped public land. New Jersey allocated 3,000 trout to it for spring 2026.
Bold where the stream crosses public land; faint and dashed across private land. Gauges are measurement stations; a nearby gauge may be on a different stream.
Stream types · New Jersey
Bold where the stream crosses public land
11 of the 17 mapped parking areas and access points along the stream are on public land, from North West Mercer Park to Delaware and Raritan Canal State Park. Distances are to the nearest bank; the others sit on private or restricted land, so check posted signs before parking there.
3,000 trout stocked spring 2026. In-season stocking dates are on the state's schedule. Source: NJDEP Fish & Wildlife, 2026 Spring Trout Allocations, checked Oct 12, 2026.
The 2026 Digest lists no special regulation for this stream, so the statewide trout rules apply: season dates, daily limits and minimum sizes.
Rules: 2026 New Jersey Freshwater Fishing Digest, pages 16-21.
The USGS gauge on this stream is Stony Brook at Princeton, NJ. Its current reading appears here and on the state map.
Other streams in the same counties: Musconetcong River · Raritan River S/B · D&R Feeder Canal · Black River · D&R Canal · Spruce Run Creek · Raritan River S/B TCA Gorge · Capoolong Creek
Check before you fish. Access, stocking and rules come from New Jersey's own data and can be out of date. Posted signs and landowners' wishes come first, and private land needs permission. You need a valid fishing license.