Summerstown : St. Lawrence

Cornwall, Ontario, Canada

Observed by
Mark Bellis

Observed on: Fri, 25 Jul 2025 19:04:00 -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) 8.4

Dissolved oxygen mg/L 12.0

Secchi depth m bottom visible

Hardness mg/L 100.0

Alkalinity mg/L 40.0

Water depth m 0.6

Conductivity μS/cm 294.0

Air temperature °C 27.0

Water temperature °C 24.4

Current weather

Weather in previous 24 hours

Thunderstorms

No photos uploaded.