Skip to main content
LakeQuality
Two canoes crossing open water between forested points in the Boundary Waters

Rock River

Illinois. Streamflow and water-temperature readings from USGS gauges. Running 4,300 cfs as of Aug 1, 2026, 12:45 PM CDT.

Latest Reading

4,300
cubic feet / second
74.5°F
water temperature (23.6°C)
5
USGS gauges

Flow measured Aug 1, 2026, 12:45 PM CDT at gauge 05446500. Temperature measured Aug 1, 2026, 1:15 PM CDT at gauge 05440700. These are build-time snapshots, not a live feed — check the USGS gauge before relying on them.

Where Rock River is measured

Loading map…

5 USGS gauges on Rock River — open one for its live readings on the USGS site. The other pins are places to stay, from Stay22.

USGS Gauges on Rock River

GaugeStationWater temp?
05437500ROCK RIVER AT ROCKTON, IL—
05440700ROCK RIVER AT BYRON, ILYes
05442300ROCK RIVER AT DIXON, IL—
05443500ROCK RIVER AT COMO, IL—
05446500ROCK RIVER NEAR JOSLIN, ILYes

Stays via Stay22

Where to stay near Rock River

Compare cabins, lodges, and vacation rentals near Rock River in Illinois — live availability and prices for your dates. Switch the map to Satellite to see how close each stay sits to the water.

Top-rated places to stay near Rock River

Prices for Sep 18–20, 4 adults. Change dates on the map below.

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.

Planning a trip to Rock River?

Get lake water-quality updates plus the best cabin & lodging deals near Rock River — straight to your inbox. No spam, unsubscribe anytime.

Fly fishing rivers →Illinois lakes →

Conditions: USGS NWIS (public domain).