Shell Rock River
River in Iowa, read from its USGS gauge, draining about 1,746 square miles. Figures refresh every fifteen minutes.
Discharge
1,350
cfs · 30 min ago
Normal for today
467
cfs median, 66 yrs
Water temp
—
not measured here
Gage height
8.67
ft
Reading the number
On this date the gauge has averaged 467 cfs over 66 years of record, with the middle half of years falling between 247 and 1,360 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 Shell Rock River
Shell Rock River does not have its own verified chart yet. This calendar is combined from the verified charts on Root River (89 mi), Black Earth Creek (147 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: absent | February: absent | March: active | April: peak | May: active | June: active | July: active | August: active | September: peak | October: peak | November: absent | December: absent |
| Caddis | January: absent | February: absent | March: absent | April: active | May: peak | June: peak | July: active | August: active | September: active | October: absent | November: absent | December: absent |
| March Brown | January: absent | February: absent | March: absent | April: absent | May: active | June: peak | July: active | August: absent | September: absent | October: absent | November: absent | December: absent |
| Midge | January: peak | February: peak | March: active | April: absent | May: absent | June: absent | July: absent | August: absent | September: absent | October: active | November: active | December: peak |
| Scud | January: active | February: active | March: active | April: active | May: active | June: active | July: active | August: active | September: active | October: active | November: active | December: active |
| Sulphur | January: absent | February: absent | March: absent | April: absent | May: peak | 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: absent | July: active | August: peak | September: peak | October: active | November: absent | December: absent |
| Hendrickson | January: absent | February: absent | March: absent | April: peak | May: active | June: absent | July: absent | August: absent | September: absent | October: absent | November: absent | December: absent |
| Light Cahill | January: absent | February: absent | March: absent | April: absent | May: absent | June: peak | July: active | August: active | September: absent | October: absent | November: absent | December: absent |
| Sculpin | January: active | February: active | March: active | April: active | May: absent | June: absent | July: absent | August: absent | September: active | October: peak | November: active | December: active |
Reports
From anglers on Shell Rock 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.