BirdTrout

Clarion River, Pennsylvania

24 mapped river miles, draining 966 square miles, in the Clarion River basin watershed. 3 USGS gauges report water temperature on it, and this page reads all 3.

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Public land — where the bank is open to walk and fish

USGS gauge — live water temperature

Water temperature — the colour of the river, and of every dot on it

58 64 70

50°F and colder is cold, through cold-transitional and cool, to warm above 70°F — the same four bands, breaking at 58, 64 and 70°F, that the app paints. Grey is water nobody has measured.

Water temperature right now

Live from the USGS — every pill above is live, so the numbers you are reading are the latest continuous readings at each gauge. Provisional and unreviewed, as all real-time data is. If that fetch cannot happen — you are offline, or the USGS is down — the pills fall back to the last value we cached, 30 September 2026, 14:04 UTC. Not all of them, though: East Branch near Clermont, Pa is not reporting water temperature — its last water temperature was 144 days ago, on 7 May 2026. That pill carries a modelled temperature where one can be fitted, marked as modelled, and a dash where it cannot — never a stale reading dressed as a current one.

Thermal classification

Each gauge carries a July mean built from its own daily record — 7 Julys, 2019–2025, measured rather than modelled. A July mean is what decides which of the four bands a stretch of water belongs to, because July is when a trout river either holds or does not.

Every gauge sits at the bottom of its segment, so each number is the warm end and the water above it runs colder. ±2.48 °F on the fit.

Questions about this river

• Clarion River fishing report — what it reads right now
• When to fish the Clarion River — hatches, seasons and temperature
• How to get to the Clarion River — access, parking and public land
• Clarion River fishing regulations — season, size and gear by reach

PA DEP classification

PA DEP classifies this water as Cold Water Fishes and Warm Water Fishes. More than one class appears because the classification changes along the river. The thermal bar above shows where. The management tier on those reaches is Cold Water Fishes, Warm Water Fishes. This is a designation of the fishery, not the season and creel rules — those change yearly and live with the agency.

Fishable reaches

River miles are measured above the mouth, along the mapped mainstem. The reach breaks are the gauges, which is also how the temperature model divides the river.

0 mapped access sites on the mainstem: 0 walk-in, 0 boat or canoe launches.

USGS gauges

Every gauge on the mainstem, upstream first. Links go to the USGS monitoring-location page for the site.

• East Branch Clarion River near Clermont, Pa — 03026480 · RM 14.8
  210 July days of record across 7 Julys (2019–2025)
• Eb Clarion River at Eb Clarion River Dam, Pa — 03027500 · RM 7.3
  235 July days of record across 8 Julys (2019–2026) · 146 cfs at last read
• Clarion River at Johnsonburg, Pa — 03028500 · RM 0.0
  248 July days of record across 8 Julys (2019–2026) · 229 cfs at last read

Public land on the river

1 unit of public or open-access land touches this river, 232 acres in total. Acreage is the whole unit, not the part beside the water.

Species

PA DEP designates this as trout water — Cold Water Fishes — without naming the species. No fish survey or stocking record for this water is in the files this site reads.

Historical July mean

The measured record behind every temperature band on this page: the mean of the daily means for July, at each gauge, over the years USGS has one.

Tributaries and watershed

6 named streams meet this one. Confluence miles are above the mouth; the longest twelve are listed.

• Licking Creek 24.1 mi · RM 16.4
• Piney Creek 22.9 mi · RM 23.7
• Deer Creek 14.5 mi · RM 23.4
• Canoe Creek 11.3 mi · RM 19.8
• Beaver Creek 9.4 mi · RM 19.0
• Turkey Run 8.0 mi · RM 6.3

Clarion River sits in HUC 8 05010005, the Clarion River basin, and drains 966 square miles, Strahler order 6 at the mouth. 163 NHD reaches carry the name for 108.1 miles in total — more than the 23.7 miles of drawn mainstem, because NHD counts side channels and braids as their own reaches.

Other water nearby

The closest 6 rivers on this site, straight-line from the middle of this one — not drive time.

• Maple Creek 7.0 mi
• West Branch Millstone Creek 7.6 mi
• Paint Creek 8.0 mi
• East Branch Millstone Creek 8.1 mi
• Brush Creek 8.3 mi
• Spring Creek 10.4 mi