Marias River
River in Montana, read from 3 USGS gauges, draining about 7,027 square miles. Figures refresh every fifteen minutes.
Discharge
464
cfs · 17 min ago
Normal for today
519
cfs median, 37 yrs
Water temp
—
not measured here
Gage height
1.13
ft
Gauges on this water
Reading by reach
Reading the number
On this date the gauge has averaged 519 cfs over 37 years of record, with the middle half of years falling between 454 and 869 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 Marias River
Marias River does not have its own verified chart yet. This calendar is combined from the verified charts on Missouri River (99 mi), Blackfoot River (137 mi), Crowsnest River (140 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: peak | 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: peak | 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 |
| Midge | January: peak | February: peak | March: peak | April: peak | May: active | June: active | July: active | August: active | September: active | October: peak | November: peak | December: peak |
| 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 |
| 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 |
| 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 |
| Little Black Stonefly | January: absent | February: absent | March: active | April: active | May: active | June: absent | July: absent | 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: active | September: peak | October: active | November: absent | December: absent |
| Skwala | January: absent | February: absent | March: active | April: peak | May: absent | June: absent | July: absent | August: absent | September: absent | October: absent | November: absent | December: absent |
Reports
From anglers on Marias 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.