Does Middle Fk Copper River hold wild trout?

Yes. The state classifies Middle Fk Copper River as Class II (some natural reproduction) across 11.36 miles of stream. That classification means natural reproduction, not stocking. Source: Wisconsin DNR Classified Trout Streams.

Middle Fk Copper River

Wisconsin. Classified Class II (some natural reproduction) by the state across 11.36 miles.

State Trout Classification

Classification	Class II (some natural reproduction)
Classified length	11.36 miles

Source: Wisconsin DNR Classified Trout Streams.

Fly fishing rivers →Wisconsin trout water →Wisconsin lakes →

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