St. Lawrence River
Cornwall, Ontario, Canada
Cornwall Harbour is located in Lake St. Francis, a fluvial lake, at the centre of the Cornwall, ON waterfront. The bay has a bit of an eddy where the flow goes opposite direction of the river. This area is known to be a hot spot for mercury contamination in the sediments. It is a popular recreational spot for locals including swimming, angling, snorkeling, and diving.

- Site ID: CH
- Lat: 45.0164245
- Lng: -74.7067094
- Waterbody Type: Unknown
- Timezone: America/Toronto
Latest photos
No photos uploaded.
Underwater observations
- Smallmouth bass seen on nests with eggs
- Vegetation still hasn't grown in
- School of small minnows seen along the edge of the water
- A school of suckers in the deeper areas feeding on vegetation
- Thick layer of periphyton on rocks and bottom