Know before you go

Fishing conditions

Live gauge, water temperature, and clarity — and what each one means for the fishing.

Discharge

cfs

Gauge height

feet

Water temp

Today's call

Readings pulled live from USGS gauge 04201500, Rocky River near Berea. Full hydrograph

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A rising gauge and a falling gauge at the same number are two different rivers. Fish the drop.

Step one

Reading the flow

Under 90 cfs · Low and clear

Fish are stacked in deep pools and spooky. Light tippet, small presentations, first and last light.

90 – 150 cfs · Fishable

Clearing and reliable if you cover water. Work ledges and current seams methodically.

150 – 400 cfs · Prime water

Enough push to move fish, enough clarity for them to see. Go — fish the fresh water first.

400 – 700 cfs · High and colored

Fishable on the drop, near the banks. Bigger, brighter offerings on soft edges and inside bends.

Over 700 cfs · Blown out

Chocolate and dangerous to wade. Give the clay two to four days to settle.

Step two

Water temperature

Temperature sets a steelhead’s metabolism, which sets how far it will move for your fly. The Berea gauge reports it when its sensor is running; if the tile above shows a dash, judge from air temperature and recent weather.

Above 60°F

Too warm. Fish hold at the mouth and wait for the river to cool.

42 – 55°F

The sweet spot. Active, aggressive fish that chase a swung fly.

34 – 40°F

Slow everything down and fish right on the bottom. Dead drift.

Below 34°F

Slush and anchor ice. Stay home.

Step three

Clarity

Flow says how much water is moving. Turbidity says whether a steelhead can see your fly in it — and once the gauge is anywhere near fishable, clarity is the number that decides the day. The Northeast Ohio Regional Sewer District measures it live on the lower Rocky.

Live monitoring · NEORSD, river mile 4.3 Open the dashboard ↗

Under 10 NTU · Clear

Fish see everything, including you. Light tippet, small beads, low light.

10 – 25 NTU · Light stain

The best water the Rocky gives you. Fish hold looser and move to the fly.

25 – 50 NTU · Stained

Go bigger and brighter, fish slower, and work close to structure and soft edges.

Over 50 NTU · Chocolate

Wait for the drop, or hunt tributary mouths and slack water where clay settles first.

Ranges are our own on-river judgment, not agency thresholds. Watch the trend as much as the number: clay drops out of the Rocky slowly, so falling turbidity behind a falling gauge is the window worth driving for.

One monitor and one gauge cover twelve miles of river. The lower reaches near Scenic Park often clear a day behind these numbers, and the branches clear a day ahead. For a look at the actual water, the stream camera on the home page sits at the Rocky River Nature Center, just below the East and West Branch confluence.