Does Deer Creek hold wild trout?

Yes. The state classifies Deer Creek as Class I (wild, self-sustaining) across 7.56 miles of stream. That classification means natural reproduction, not stocking. Source: Wisconsin DNR Classified Trout Streams.

Deer Creek

Wisconsin. Classified Class I (wild, self-sustaining) by the state across 7.56 miles.

State Trout Classification

Classification	Class I (wild, self-sustaining)
Classified length	7.56 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.