Yes, on the classification rather than on a thermometer. WDNR has stocked brook trout into Hefty Creek once, in 2017, and this site reads the water as cold from WDNR's management tier for it, which is an inference from how the fishery is managed and not a temperature WDNR publishes — but no USGS gauge on this river reports water temperature, so this site has no measured July mean to hold against the 53–61 °F band this fish wants. That is a stocking record and not a survey: it says WDNR put the fish in, not that anyone has since found one holding over. Fish of 6–11 inches are what Wisconsin reports as typical.
Native, and the driftless spring creeks and the northern forest headwaters hold it in different country: karst springs in the south, tannic sand and gravel in the north.
No USGS gauge on this river reports water temperature, so there is no measured July mean to put beside the species' band. WDNR publishes no temperature classification for this water; the Cold band above is inferred from its management tier for the fishery, and it is not a thermometer.
| Gauge | Now | July mean |
|---|---|---|
| SUGAR RIVER NEAR VERONA, WI | 58.3 °F | 67.4 °F |
Wisconsin DNR classifies this water as Class II. The management tier on those reaches is wild supplemented. This is a designation of the fishery and not the season and creel rules.
WDNR trout stream classification → Wisconsin season and creel rules →
The insects recorded from this river's region, earliest first. The full calendar →
Hefty Creek — live water temperature, regulations and access