Does Clam River hold wild trout?

Yes. The state classifies Clam River as Class I (wild, self-sustaining) across 8.29 miles of stream. That classification means natural reproduction, not stocking. Source: Wisconsin DNR Classified Trout Streams.

Clam River

Wisconsin. Classified Class I (wild, self-sustaining) by the state across 8.29 miles.

State Trout Classification

Classification	Class I (wild, self-sustaining)
Classified length	8.29 miles

Source: Wisconsin DNR Classified Trout Streams.

USGS Gauges on Clam River

Gauge	Station	Water temp?
05335492	CLAM RIVER AT HWY 35 NR WEBSTER, WI	—

Fly fishing rivers →Wisconsin trout water →Wisconsin lakes →

Conditions: USGS NWIS (public domain). Classification: Wisconsin DNR Classified Trout Streams.