Flathead River
River in Montana, read from 3 USGS gauges, draining about 9,024 square miles. Figures refresh every fifteen minutes.
Discharge
7,650
cfs · 45 min ago
Normal for today
7,310
cfs median, 43 yrs
Water temp
61
°F · 45 min ago
Gage height
8.56
ft
Gauges on this water
Reading by reach
Reading the number
On this date the gauge has averaged 7,310 cfs over 43 years of record, with the middle half of years falling between 5,610 and 9,610 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 Flathead River
Flathead River does not have its own verified chart yet. This calendar is combined from the verified charts on Kootenai River (52 mi), Crowsnest River (86 mi), Blackfoot River (103 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: active | 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: active | November: absent | December: absent |
| 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: absent | June: peak | July: peak | August: active | September: absent | October: absent | November: absent | December: absent |
| Green Drake | January: absent | February: absent | March: absent | April: absent | May: absent | June: active | 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 |
| 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 |
| October Caddis | January: absent | February: absent | March: absent | April: absent | May: absent | June: absent | July: absent | August: active | September: peak | October: peak | 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 |
| Terrestrials | January: absent | February: absent | March: absent | April: absent | May: absent | June: active | July: peak | August: peak | September: peak | 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 |
| 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 |
Reports
From anglers on 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.