Wolf River
Wisconsin. Classified Class II (some natural reproduction) by the state across 37.86 miles. Running 3,950 cfs as of Aug 1, 2026, 6:00 PM UTC.
Latest Reading
Flow measured Aug 1, 2026, 6:00 PM UTC at gauge 04081500. Temperature measured Aug 1, 2026, 6:00 PM UTC at gauge 04079000. These are build-time snapshots, not a live feed — check the USGS gauge before relying on them.
This water was above the trout-stress threshold
Wolf River read 78.1°F as of Aug 1, 2026, 6:00 PM UTC. Trout come under thermal stress above roughly 68°F, and mortality after catch-and-release rises sharply in warm water. Montana FWP restricts angling when max daily water temperature reaches 73F for 3 consecutive days.
At or above that threshold many anglers stop fishing for the day, fish early morning only, or move to colder water. We are reporting a measurement, not issuing an advisory — check your state agency for any restriction actually in force.
State Trout Classification
| Classification | Class II (some natural reproduction) |
| Classified length | 37.86 miles |
Source: Wisconsin DNR Classified Trout Streams.
USGS Gauges on Wolf River
Conditions: USGS NWIS (public domain). Classification: Wisconsin DNR Classified Trout Streams.