Fly fishing report · Northeast

Clarion River

A Clarion River report for Cooksburg flows, smallmouth, upper trout context, water-trail logistics, hatches, and PFBC source checks.

Check flow & weather

Today's fishing decisionMost live data available

Use caution

Clarion 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 approachFloat

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, 12:54 AM UTCUsually refreshes about every 45 minutes

Best supported approachFloat

Compare wading, bank fishing, and floating before choosing how you will fish.

Wade48/100

Wading is the most sensitive plan today. Use protected edges only, avoid crossings, and downgrade quickly if clarity or current feels wrong.

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.

Float · Best fit72/100

A float can fit better than wading only if launches, shuttle, boat skill, wind, and local rules all check out.

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.

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, 8:54 PM
Fishing guidance: Reviewed Jun 1, 2026
Public access: No reviewed map pin available
Rules and closures: Official rule links checked

View report sources See how reports are verified Report an error

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

Area description

Cooksburg corridor

No map pin

Primary mainstem flow and access orientation for this page.

Restrictions and seasonal notes

The Clarion is a better page when it separates mainstem smallmouth from reach-specific trout reach details.

Use water-trail access and current conditions before planning a float.

Official source Checked Jun 1, 2026

Trailhead

Clarion River water trail

No map pin

Use PFBC resources for ramps, float distances, and trip timing.

Restrictions and seasonal notes

The Clarion is a better page when it separates mainstem smallmouth from reach-specific trout reach details.

Use water-trail access and current conditions before planning a float.

Official source Checked Jun 1, 2026

Area description

Upper/West Branch trout context

No map pin

Treat these as separate rule checks, not the same plan as the lower mainstem.

Restrictions and seasonal notes

The Clarion is a better page when it separates mainstem smallmouth from reach-specific trout reach details.

Use water-trail access and current conditions before planning a float.

Official source Checked Jun 1, 2026

How to fish it

This page is a mainstem Clarion plan with trout context, not only a trout creek page.

The Clarion around Cooksburg is best treated as a mixed fly-fishing river: smallmouth and float planning matter, while trout opportunity is more reach-specific upstream or in special sections. Use the Cooksburg gauge for the mainstem plan.

USGS 03029500 is the best mainstem gauge for this page.
Use PFBC water-trail sources for ramps, float distance, and public logistics.
Smallmouth tactics are often more realistic in warm periods than forcing a trout-only plan.
Trout-specific language should be tied to upper or West Branch sections, not the whole river.

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 1:45PM EDT until August 3 at 12:00AM EDT by NWS Pittsburgh PA.

FlowHelps score

USGS shows 596 cfs with a stable over about 6 hours trend. Today's flow is within the normal seasonal range of 310 cfs to 630 cfs. Weather, water temperature, and access are the next checks.

SeasonHelps score

Summer: Mainstem smallmouth is often the best fly plan.

WeatherHelps score

The NWS forecast is about 71F with Showers And Thunderstorms.

Read the water

What changes the plan.

Stable, clear flows make the mainstem better for smallmouth and streamer work. Cooler spring and fall windows can bring more trout-style tactics into the plan.

Stable medium flow

Fish boulder edges, ledges, shade banks, and current breaks with streamers, nymphs, and crayfish.

Low clear summer flow

Use smaller streamers, poppers, long casts, and early or late light.

High water

Shift to safe banks, boat planning, or a smaller backup creek.

Cool spring/fall water

Bring trout nymphs and soft hackles for upper sections where legal and practical.

Your trip plan

Know when to go—and when to skip it.

Best flows

Use USGS 03029500 at Cooksburg for the mainstem plan and USGS 03028500 at Johnsonburg for upper-river context. Stable readable flow is best; high water, poor exits, or warm trout conditions should change the plan.

When to skip

Skip or pivot when mainstem flow is pushy, strainers or boat logistics are not sorted out, water is too warm for trout handling, storms are nearby, or trout reach rules are not confirmed.

Local plan

Start with the Cooksburg gauge, PFBC water-trail guidance, current regulations, and one realistic access or float plan. Decide whether the day is mainstem smallmouth, upper trout, or a mixed scout before rigging.

Backup water

If the Clarion is high, crowded, too warm, or logistically awkward, compare the Allegheny River for a larger tailwater plan, Oil Creek for smaller trout water, or Slippery Rock Creek for a different western Pennsylvania option.

Hatches & flies

Bring a flexible box.

TimingWhat to watchUseful flies

January to MarchMidges, little black stones, BWOs, and slow nymph windowsZebra midge, black stonefly nymph, BWO emerger, perdigon, small egg

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 nymph”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

April to JuneHendricksons, March Browns, sulphurs, caddis, BWOs, and spinner fallsHendrickson, March Brown, sulphur emerger, caddis pupa, pheasant tail

Fly family · report suggests “Hendrickson”Hendrickson PatternsHendrickson is a hatch name. Nymphs and emergers, upright or low-riding duns, and rusty spent spinners are different fly jobs.See family guide

Fly family · report suggests “March Brown”March Brown Dry FliesThis family includes traditional hackled, parachute, and Comparadun-style March Brown dries. Each exact construction rides differently and should be named when known.See family guide + 3 more reviewed guides in the Fly Box

July to SeptemberTricos where present, ants, beetles, hoppers, and shade-line terrestrialsTrico, ant, beetle, small hopper, dry-dropper, small jig nymph

Fly family · report suggests “Trico”Trico PatternsTrico is a hatch family. Sparse nymphs and emergers fish below or in the film; duns and clustered or individual spinners use different surface silhouettes.See family guide

Fly family · report suggests “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 + 3 more reviewed guides in the Fly Box

October to DecemberBWOs, midges, caddis remnants, and streamer windows after rainBWO emerger, zebra midge, soft hackle, olive bugger, sculpin

Fly family · report suggests “BWO emerger”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

Pick the fishery first: mainstem smallmouth, upper trout, or float-and-scout day.

For smallmouth, work crayfish and baitfish patterns along ledges, shade, and current breaks.

For trout-context water, use nymphs and soft hackles only where the reach and temperature support it.

Use poppers in low-light summer windows when smallmouth are looking up.

Avoid long wades in pushy mainstem flows.

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 checked

Rules 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 Clarion River. We review every update before it appears and never publish exact fishing spots, private access details, or photo locations.

Share what you saw Open in BSF

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: Jun 1, 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.

regulationPennsylvania 2026 fishing summary book accessPFBC Clarion water trail flowUSGS 03029500 Clarion River at Cooksburg flowUSGS 03028500 Clarion River at Johnsonburg safetyNational Weather Service point near Cooksburg regulationPFBC trout water classifications

Common questions

Before you leave.

What should I check first before fishing the Clarion River?+

Check USGS 03029500 at Cooksburg, then decide whether your day is a mainstem smallmouth plan or a reach-specific trout plan.

Where should a first-time visitor start on the Clarion River?+

Start around Cooksburg and the PFBC water trail for mainstem orientation.

Can I wade the Clarion River?+

Some wading is possible, but the Clarion is a mainstem river. Treat higher flows as boat or bank-only conditions.

What flies should I bring for the Clarion River?+

Bring the seasonal fly box, a few confidence nymphs or streamers, and enough tippet to change when flow, clarity, temperature, or pressure changes.