Dan Block was there recently, I believe that he left a line to the surface. It's too deep and too rarely visited for our Straits Preserve members to try to mark it each year. Maybe someday I'll get into doubles and give it a shot...
In the Straits we have been getting more current, and thus cooler bottom temps lately. It has been around 43 deg F at the bottom since early July. Thermocline depth has varied from 72 ft to 38 ft, with one weird day where I froze at 22 ft. The South Channel has been warmer, with temps of 59 at te St.Andrew, but I guess that means the thermocline had moved deeper again. Strangely, temps were 54-55 deg from top to bottom, even on the Eber Ward, from mid-May until the very end of June this year. In 2009 we had that sort of temp profile for most of September, but were cold the rest of the season.
Please consider making a donation to the Preserve if you like the convenience of the moorings, we've put a lot of effort into making them stronger and safer. Our fund-raising Treasure Hunt is this Sunday morning, Aug 15 in St. Ignace. We also sell T-shirts with our logo. You can see me (Dan) for shirts at the Straits Scuba dock (Star Line Main Ferry dock) in St.Ignace each weekend, or contact the St.Ignace Chamber of Commerce at 906-643-8717.
