The water level of the Ottawa River is still low. As a consequence outcrops that form the river bed are visible and accessible. Below are photographs that I took a few days ago of the domal stromatolites that outcrop in the bed of the Ottawa River near Dunrobin, just downstream from the Port of Call Marina.
The blue ruler in the photos is 12 inches (30 cm) long.
A map showing the location of the marina can be found at Port of Call Marina’s web site: www.portofcall.ca
Christopher Brett
Perth, Ontario
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