Hazard Warning: Hazard information may be user-submitted and unverified. Conditions change frequently. Always scout rapids and obstacles yourself.

Rapid WI

USGS sampling site

American Whitewater 46.4162, -90.7365

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Gauge Conditions

Marengo River near Mellen, WI Upstream Primary

Runnable: ? – ? CFS

Approximate - nearest available gauge. Use as general reference only.

Data from American Whitewater & USGS

Description

A USGS gauge (with drainage area of 195 square miles) has been in place since August, 2021. For water year 2023, it lists a maximum flow of 3040 cfs. Flow exceded 382.6 cfs 10% of the time (I.E., about 35 days of the year), and exceeded 49.8 cfs 90% of the time, giving a "10/90 Ratio" of 7.68. ("10/90" is a measure of 'flashiness': low numbers (2 or 3) represent very steady (not flashy) flows, high numbers (10 or above) represent flashy flows.)