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Rock River at Como, IL
Stream Name: Rock River
Gage Zero: 606.83 Ft. NGVD29
Flood Stage:12.5 Ft.
Record High Stage:19.60 Ft. 		Longitude: -89.74944000
Latitude: 41.78333000
River Mile: 69.2 miles above the mouth of the Rock River
Record High Stage Date: 02/16/1918

Drainage Area : 8753.00 Mi2
Location of Gage :

Locateed in Whiteside County, IL. on the left bank 0.8 miles upstream from the U.S. Highway 30 bridge over the Rock River, 1 mile upstream from Como, 3.5 miles upstream from Elkhorn Creek and 3 miles downstream of Rock Falls.

For official flow data, please visit the USGS website listed in the Additional Links for this station.  The National Weather Service information is also linked in the Additional Links for this station.

This gage is cooperatively operated by the US Army Corps of Engineers (Rock Island District) and the US Geological Survey (Illinois District).

Latest Data
07/19/2025 23:00 Central
Latest Stage4.89 Ft.
24 Hr. Change+0.11 Ft.
Last Year's Stage12.20 Ft.
Latest Flow6,468 CFS
24 Hr. Precip TotalM   View Pricip Table
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Additional Links:
View Record Stage High / Lows
DECODES XML
Historic Flood Profiles (Dixon to Hwy 78 RM 87.25 to RM 48)
Rating Table
Bench Marks and Reference Points
Official USGS data for this station
Official National Weather Service information for this station
US Army Corps of Engineers - Rock Island District - Water Control Center - Contact Us