San Juan River
River in Utah, read from 2 USGS gauges, draining about 24,000 square miles. Figures refresh every fifteen minutes.
Discharge
—
not reporting
Normal for today
—
no long-term record
Water temp
67
°F · 11 min ago
Gage height
—
not measured here
Gauges on this water
Reading by reach
Regional hatch calendar
What is likely hatching near San Juan River
San Juan River does not have its own verified chart yet. This calendar is combined from the verified charts on Dolores River (81 mi), Colorado River Lees Ferry (97 mi), Animas River (110 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: peak | June: active | July: absent | August: absent | September: active | October: peak | November: peak | December: active |
| Midge | January: peak | February: peak | March: peak | April: peak | May: peak | June: peak | July: peak | August: peak | September: peak | October: peak | November: peak | December: peak |
| Caddis | January: absent | February: absent | March: absent | April: absent | May: active | June: active | July: peak | August: peak | September: active | October: absent | November: absent | December: absent |
| Pale Morning Dun | January: absent | February: absent | March: absent | April: absent | May: absent | June: active | July: peak | August: peak | September: absent | October: absent | November: absent | December: absent |
| Sculpin | January: active | February: active | March: active | April: active | May: active | June: active | July: active | August: active | September: peak | October: peak | November: active | December: active |
| Terrestrials | January: absent | February: absent | March: absent | April: absent | May: absent | June: active | July: peak | August: peak | September: peak | October: active | November: absent | December: absent |
| Cicada | January: absent | February: absent | March: absent | April: absent | May: absent | June: active | July: peak | August: active | September: absent | October: absent | November: absent | December: absent |
| Golden Stonefly | January: absent | February: absent | March: absent | April: absent | May: absent | June: active | July: active | 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 |
| 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 |
PeakActiveAbsent
Reports
From anglers on San Juan 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.