South Fork Flathead River
River in Montana, read from 2 USGS gauges, draining about 1,668 square miles. Figures refresh every fifteen minutes.
Discharge
2,190
cfs · 1h ago
Normal for today
2,050
cfs median, 103 yrs
Water temp
51
°F · 1h ago
Gage height
5.57
ft
Gauges on this water
Reading by reach
Reading the number
On this date the gauge has averaged 2,050 cfs over 103 years of record, with the middle half of years falling between 713 and 2,750 cfs. Today sits inside that band, which is as close to a normal October day as the gauge can tell you.
Regional hatch calendar
What is likely hatching near South Fork Flathead River
South Fork Flathead River does not have its own verified chart yet. This calendar is combined from the verified charts on Blackfoot River (75 mi), Clark Fork River (78 mi), Kootenai River (86 mi). Treat it as regional timing, and file a report if you see something different here.
| Insect | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Blue-Winged Olive | January: active | February: active | March: peak | April: peak | May: active | June: absent | July: absent | August: active | September: peak | October: peak | November: active | December: active |
| Caddis | January: absent | February: absent | March: absent | April: active | May: peak | June: peak | July: peak | August: peak | September: active | October: absent | November: absent | December: absent |
| Midge | January: peak | February: peak | March: peak | April: peak | May: active | June: absent | July: absent | August: absent | September: absent | October: active | November: peak | December: peak |
| Pale Morning Dun | January: absent | February: absent | March: absent | April: absent | May: absent | June: active | July: peak | August: peak | September: active | October: absent | November: absent | December: absent |
| Golden Stonefly | January: absent | February: absent | March: absent | April: absent | May: active | June: peak | July: peak | August: active | September: absent | October: absent | November: absent | December: absent |
| Grasshopper | January: absent | February: absent | March: absent | April: absent | May: absent | June: active | July: peak | August: peak | September: active | October: absent | November: absent | December: absent |
| Salmonfly | January: absent | February: absent | March: absent | April: absent | May: active | June: peak | July: peak | August: absent | September: absent | October: absent | November: absent | December: absent |
| Skwala | January: absent | February: absent | March: active | April: peak | May: active | June: absent | July: absent | August: absent | September: absent | October: absent | November: absent | December: absent |
| Grannom | January: absent | February: absent | March: absent | April: absent | May: peak | June: active | July: absent | August: absent | September: absent | October: absent | November: absent | December: absent |
| Green Drake | January: absent | February: absent | March: absent | April: absent | May: absent | June: absent | July: active | August: absent | September: absent | October: absent | November: absent | December: absent |
| March Brown | January: absent | February: absent | March: absent | April: absent | May: active | June: active | July: absent | August: absent | September: absent | October: absent | November: absent | December: absent |
| October Caddis | January: absent | February: absent | March: absent | April: absent | May: absent | June: absent | July: absent | August: absent | September: active | October: peak | November: absent | December: absent |
Reports
From anglers on South Fork Flathead River
No reports filed here yet. The first one becomes the page’s local knowledge, stamped with the flow at the time. File a report.