Wade · Best fit48/100
Wading is the most sensitive plan today. Use protected edges only, avoid crossings, and downgrade quickly if clarity or current feels wrong.
Menu
Fly fishing report · Northeast
South Branch Raritan River
A South Branch Raritan report for Ken Lockwood Gorge and High Bridge trout planning, with flow, hatches, access, rules, and tactics.
Check flow & weatherToday's fishing decisionMost live data available
68
Use caution
South Branch Raritan River is a cautious call right now.
The forecast has storm or heavy-precipitation risk, so timing and access matter more than the score alone.
Best supported approachWade
Watch nextShort-term weather: The forecast has storm or heavy-precipitation risk, so timing and access matter more than the score alone.
Updated Aug 3, 12:51 AM UTCUsually refreshes about every 45 minutes
Best supported approachWade
Compare wading, bank fishing, and floating before choosing how you will fish.
Bank / edgeNeed data
This report does not describe this as a primary mode. Verify legal access, depth, launches, and retreat options before planning around it.
FloatNeed data
This report does not describe this as a primary mode. Verify legal access, depth, launches, and retreat options before planning around it.
Check before you drive
Current flow and weather.
Look at whether the river is rising or falling, then check wind, rain, and storms. These can change both safety and fishing.
Loading current flow and weather.
Before you rely on this report
How current is this report?
Conditions can change quickly. Check these dates before you decide to fish, and open the official source when safety or rules matter.
- River conditions
- Checked Aug 2, 2026, 8:51 PM
- Fishing guidance
- Reviewed May 31, 2026
- Public access
- No reviewed map pin available
- Rules and closures
- Official rule links checked
High confidence in the current score inputs.
7 sources are listed below for you to open.
3 public access records are listed. Private spots are never shown.
Source checked Jul 30, 2026
Plan your access
Know where you can enter.
These are public parking, launch, trail, or recreation areas—not secret fishing spots. We never show an angler's private pins, notes, or photos here.
- 0
- Shown on map
- 3
- No map pin
Location checkedDescription only
01No map pin
Area description
Ken Lockwood Gorge
Headline trout reach with special regulation and crowding considerations.
Restrictions and seasonal notes
Ken Lockwood Gorge parking and foot traffic can be limited. Have a secondary access plan.
Rules change by reach, so do not assume the whole river follows one method or harvest rule.
02No map pin
Roadside access
High Bridge gauge reach
Primary live-flow reference and nearby access context.
Restrictions and seasonal notes
Ken Lockwood Gorge parking and foot traffic can be limited. Have a secondary access plan.
Rules change by reach, so do not assume the whole river follows one method or harvest rule.
03No map pin
Area description
Califon and Long Valley corridor
Broader upstream access context with reach-specific rules.
Restrictions and seasonal notes
Ken Lockwood Gorge parking and foot traffic can be limited. Have a secondary access plan.
Rules change by reach, so do not assume the whole river follows one method or harvest rule.
How to fish it
Use the High Bridge flow and confirm Ken Lockwood rules before fishing.
The South Branch Raritan is one of New Jersey's best-known trout rivers. Ken Lockwood Gorge is the headline reach, but the broader river has multiple access points and rule sets that need current checks.
- Use RiverReports or USGS at High Bridge before wading the gorge or nearby reaches.
- Check Ken Lockwood Gorge TCA rules before choosing flies and methods.
- Expect pressured fish; precise drifts beat heavy searching.
- Use temperature checks during warm weather and leave trout alone when water is stressful.
Why the score looks this way
Short-term weatherUse caution
The forecast has storm or heavy-precipitation risk, so timing and access matter more than the score alone.
Public alertUse caution
A Flood Watch is active near this forecast point, so the score is capped until runoff, clarity, crossings, and road access are checked. NWS alert: Flood Watch issued August 2 at 2:20PM EDT until August 3 at 11:00PM EDT by NWS Mount Holly NJ.
Best mode nowUse caution
Wade: Wading is the most sensitive plan today. Use protected edges only, avoid crossings, and downgrade quickly if clarity or current feels wrong.
FlowHelps score
USGS shows 52 cfs with a stable over about 6 hours trend. Today's flow is within the normal seasonal range of 38 cfs to 80 cfs. Weather, water temperature, and access are the next checks.
SeasonHelps score
Early summer: Caddis, sulphurs, terrestrials, and technical dry-dropper fishing.
Read the water
What changes the plan.
Best windows are cool, moderate flows with clear water and legal access. High water makes the gorge dangerous, and low clear water rewards small flies, longer leaders, and patient presentations.
Moderate and clear
Fish small nymphs, caddis, BWOs, and careful dry-dropper rigs.
Low clear water
Use long leaders, 6X, smaller flies, and stealth.
Slight stain
Try small streamers or larger nymphs near banks and plunge pools.
High water
Avoid gorge wading; fish elsewhere or wait for a safer drop.
Your trip plan
Know when to go—and when to skip it.
Best flows
Use RiverReports and USGS 01396500 near High Bridge together for trend context. Moderate stable flow is ideal; high water makes gorge wading dangerous, while low clear summer water means smaller flies, longer leaders, and stricter temperature discipline.
When to skip
Skip the South Branch when Ken Lockwood Gorge rules are unclear, when flow makes the gorge unsafe, when warm weather pushes trout toward stress, or when obvious access is already crowded enough to flatten the experience.
Local plan
Start by choosing the river style you want: Ken Lockwood Gorge for the signature technical walk-and-wade day, High Bridge for the clearest live-flow reference, or upstream corridor water when you need more room than the famous gorge can offer.
Backup water
If the South Branch is crowded, too warm, or too high for the gorge, compare the Musconetcong or Pequest for other strong New Jersey trout options, or Flat Brook for a quieter small-river plan.
Hatches & flies
Bring a flexible box.
TimingWhat to watchUseful flies
March to AprilMidges, early stones, BWOs, stocked-trout nymphingZebra midge, black stonefly, BWO emerger, pheasant tail, egg only where legal
Fly pattern · report suggests “Zebra midge”Zebra MidgeLook for a very slim tapered thread body, evenly spaced contrasting wire rib, a small bead, and no tail or wing. The reviewed classic is black with silver wire and a silver bead. Red, olive, brown, glass-bead, jig-hook, resin-coated, or tailed forms must remain labeled variations rather than replacing the classic identity.See photos & how to fish it ↗
Fly family · report suggests “black stonefly”Black Stonefly PatternsBlack stonefly wording is a color and insect-group label, not one exact recipe. Size, nymph versus adult stage, wing profile, and weighting must remain explicit.See family guide ↗+ 3 more reviewed guides in the Fly Box May to JuneCaddis, sulphurs, March Browns, crane flies, light mayfliesElk hair caddis, caddis pupa, sulphur, March Brown, hare's ear
Fly pattern · report suggests “Elk hair caddis”Elk Hair CaddisLook for a tented elk- or deer-hair wing, clipped hair head, dubbed body, rib, and hackle palmered along the body. The body color should be labeled because tiers often match different natural caddis colors.See photos & how to fish it ↗
Fly family · report suggests “caddis pupa”Caddis Pupa PatternsCaddis pupa is a life-stage family. Curved bodies, wing pads, legs, beads, and soft-hackle collars differ among exact patterns and must be labeled.See family guide ↗+ 3 more reviewed guides in the Fly Box July to SeptemberTerrestrials, tricos in slower water, ants, beetles, summer caddisFoam ant, beetle, small hopper, trico spinner, dry-dropper
Fly family · report suggests “Foam ant”Ant PatternsAnt patterns can be foam, fur-bodied, winged, or sunken. The narrow waist and paired body lobes matter more than one material recipe.See family guide ↗
Fly family · report suggests “beetle”Beetle PatternsBeetle flies range from simple foam shells to hair-bodied and sunken forms. A rounded back and compact profile distinguish the family from ants and hoppers.See family guide ↗+ 2 more reviewed guides in the Fly Box Fall and winterBWOs, midges, scuds, small streamers during legal trout windowsBWO, zebra midge, scud, soft hackle, mini leech
Fly family · report suggests “BWO”Blue-Winged Olive PatternsBWO describes a hatch group, not one fly. Nymph, emerger, dry, cripple, and spinner profiles must stay separate because they occupy different parts of the water column.See family guide ↗Fly pattern · report suggests “zebra midge”Zebra MidgeLook for a very slim tapered thread body, evenly spaced contrasting wire rib, a small bead, and no tail or wing. The reviewed classic is black with silver wire and a silver bead. Red, olive, brown, glass-bead, jig-hook, resin-coated, or tailed forms must remain labeled variations rather than replacing the classic identity.See photos & how to fish it ↗+ 3 more reviewed guides in the Fly Box 01
Confirm the Ken Lockwood Gorge rule set before fishing the gorge.
02
Nymph pocket water and pool heads with small mayfly, caddis, and scud patterns.
03
Use longer leaders and smaller indicators in low clear water.
04
Swing soft hackles during caddis and BWO activity.
05
Move away from crowded obvious pools and fish overlooked seams carefully.
Rules & closures
Check the official rules before you go.
Open the agency page to confirm the exact river section, species, season, tackle rules, limits, and emergency closures.
Official links checkedRules for this river or sectionNo special rule found
We did not find a special rule for this river.
We checked the state source but did not find a clearly supported exception for this river. Check the official rules for the exact section you plan to fish.
Rules checkedJul 30, 2026
Report a correction ↗Always follow the official rule
This summary helps with trip planning. The linked agency rule is the one you must follow.
Updates from anglers
What anglers are seeing.
Recent observations from general areas of South Branch Raritan River. We review every update before it appears and never publish exact fishing spots, private access details, or photo locations.
Angler updates are not loading right now.
You can still use the river plan above. Check back later for recent observations from other anglers.
Where this report comes from
Open the sources we checked.
Fishing guidance checked: May 31, 2026
Site check: Jul 14, 2026. We regularly test report links, live scores, flow and weather data, and page loading. The content date changes only when the fishing guidance or its sources change.
flowRiverReports South Branch Raritan near High BridgeflowUSGS South Branch Raritan near High Bridge 01396500regulationNew Jersey trout fishing regulationsregulationNew Jersey general trout informationaccessNJ Fish and Wildlife trout-water access listinventoryNJ Fish and Wildlife trout fishing informationsafetyNational Weather Service forecast point
Common questions
Before you leave.
What should I check first before fishing the South Branch Raritan River?+
Check RiverReports or USGS at High Bridge, NJ trout rules, Ken Lockwood Gorge TCA rules, access notes, weather, and water temperature.
Are there special regulations on the South Branch Raritan River?+
Yes. Ken Lockwood Gorge and other reaches have special trout rules that must be checked before fishing.
What flies should I bring for the South Branch Raritan River?+
Bring the hatch-chart flies, a few confidence nymphs, and a streamer or warmwater box that matches the river's species. Then adjust for water temperature, clarity, and the insects or baitfish you actually see.
Can I wade the South Branch Raritan River?+
Yes at normal flows in many areas, but gorge footing and high water require conservative wading.
When should I skip the South Branch Raritan River?+
Skip it when flows are unsafe, water is too warm for trout, emergency closures are active, or legal access for the reach is not clear.