St. Marys River
River in Indiana, read from 4 USGS gauges, draining about 823 square miles. Figures refresh every fifteen minutes.
Discharge
154
cfs · 38 min ago
Normal for today
75.0
cfs median, 15 yrs
Water temp
—
not measured here
Gage height
8.17
ft
Gauges on this water
Reading by reach
Reading the number
On this date the gauge has averaged 75.0 cfs over 15 years of record, with the middle half of years falling between 40.0 and 253 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 St. Marys River
St. Marys River does not have its own verified chart yet. This calendar is combined from the verified charts on Huron River (119 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Caddis | January: absent | February: absent | March: absent | April: absent | May: active | June: peak | July: peak | August: active | September: active | October: absent | November: absent | December: absent |
| Hendrickson | January: absent | February: absent | March: absent | April: active | May: active | June: absent | July: absent | August: absent | September: absent | October: absent | November: absent | December: absent |
| Hex | January: absent | February: absent | March: absent | April: absent | May: absent | June: peak | July: peak | August: absent | September: absent | October: absent | November: absent | December: absent |
| Isonychia | January: absent | February: absent | March: absent | April: absent | May: absent | June: absent | July: active | August: active | September: absent | October: absent | November: absent | December: absent |
| Smallmouth Bass | January: absent | February: absent | March: peak | April: peak | May: peak | June: peak | July: active | August: active | September: absent | October: absent | November: active | December: active |
| Sulphur | January: absent | February: absent | March: absent | April: absent | May: active | June: peak | July: active | 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: active | October: absent | November: absent | December: absent |
| Trico | January: absent | February: absent | March: absent | April: absent | May: absent | June: active | July: active | August: active | September: active | October: absent | November: absent | December: absent |
| White Fly | January: absent | February: absent | March: absent | April: absent | May: absent | June: absent | July: active | August: peak | September: active | October: absent | November: absent | December: absent |
Reports
From anglers on St. Marys 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.