Yesterday for Oh Canada Day holiday a bunch of us went to Sarnia, Ontario, to do some drift dives in the St Clair River.
The water viz was great, 45 ft, and the temp was for me, amazing at 69F.
We did the Superman drift, where you start off a beach where all of Lake Huron is coming pouring down into the St Clair river. The current there is measured by Environment Canada as between 5-8 knots depending on conditions. If you try and hold onto medium to large sized stones they are just ripped out of the bottom by the force of the current. You go under the Bluewater Bridge, you'll know where you are coz the shadow of the bridge shows up on the drift. Come along the bottom and up the wall, don't surface in the boat channel.
The second dive was the Barge wreck. Here the shore current is upstream, so you climb down huge limestone block breakwaters to the water, gear up and go upstream till the eddy stops, then go down the slope to 35-40 ft and get on the express lane to the barge. Duck into the lee of the barge, stick your head up above the edge for mask ripping off current. Then drift off, climb up the huge sandbank to the rock wall at 20 ft, catch the eddy back upstream.
Like a merry go round, it was insanely fun. The viz was great and Caribbean blue, and the temps were line that too. I'll be back for sure!