Does Heiser Valley Creek hold wild trout?

Yes. The state classifies Heiser Valley Creek as Class I (wild, self-sustaining). That classification means natural reproduction, not stocking. Source: Wisconsin DNR Classified Trout Streams.

Heiser Valley Creek

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

State Trout Classification

Classification	Class I (wild, self-sustaining)
Classified length	0 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.