You need to sign in or sign up before continuing.

Summerstown : St. Lawrence

Cornwall, Ontario, Canada

Observed by
Mark Bellis

Observed on: Wed, 23 Jul 2025 20:24:00 -0400
Testers Mark Bellis
Associated with:
River Institute : Upper St. Lawrence River Volunteer Monitoring
Lat: 45.0546676
Lng: -74.5693305

Observation report

Pending Quality Check from Water Rangers What's this?

pH (0-14) 7.8

Dissolved oxygen mg/L 12.0

Secchi depth m bottom visible

Hardness mg/L 100.0

Alkalinity mg/L 60.0

Water depth m 0.54

Conductivity μS/cm 286.0

Air temperature °C 25.5

Water temperature °C 24.3

Fish

Current weather

Mostly sunny all day

Weather in previous 24 hours

Mostly sunny

No photos uploaded.

Large dead fish, possibly walleye.