63.7 °F at St. Croix River at Stillwater, 31.4 miles away — the nearest gauge, not a reading of the South Branch Vermillion River. It says what the region's water is doing today. No reporting stretch is in the cold band right now, so fish the first hours of light and the tributary mouths. September is Midge, Blue-Winged Olive, Cricket and Grasshopper in this region — 5 insects are recorded as active.
| Gauge | Reading | July mean | Read at |
|---|---|---|---|
| St. Croix River at Stillwater — 31.4 mi off this river | 63.7 °F | 77.2 °F | 30 Sep 2026, 14:00 UTC |
Read from USGS instantaneous values when this page was built, and rebuilt nightly. The colour is the same four-band scale the map paints from.
| Insect | Hook | Active at |
|---|---|---|
| Midge | #18–24 | 33–75 °F |
| Blue-Winged Olive | #16–22 | 38–58 °F |
| Cricket | #10–14 | 55–75 °F |
| Grasshopper | #8–12 | 60–80 °F |
| Trico | #20–24 | 58–72 °F |
This is one river. The Minnesota report covers every region at once, and is refreshed at the same time as this page.
South Branch Vermillion River — live water temperature, regulations and access