Frog Hollow Brook is wild trout water on the state's list in Hunterdon and Morris counties, New Jersey. None of its 3.2 miles runs through mapped public land, so ask before fishing private stretches.
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
2 of the 4 mapped parking areas and access points along the stream are on public land, from Califon Park to Columbia Trail. Distances are to the nearest bank; the others sit on private or restricted land, so check posted signs before parking there.
Not on the 2026 stocking list: the state lists it for its wild trout. 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 nearest USGS gauge is on another water, 5.9 km away: Lamington (Black) River near Pottersville, NJ. Its reading is a hint for the area, not this stream's own flow.
Other streams in the same counties: Musconetcong River · Raritan River S/B · Rockaway River · Ramapo River · D&R Feeder Canal · Passaic River · Pompton River · Pequannock River
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 Access, stocking and rules come from New Jersey's own data and can be out of date.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.