The next day we spent in the lovely Prescott marina, drying our clothes and wetting our instruments. Here is a plot of temperature and specific conductivity data in the marina:
Navigation on the St.Lawrence River requires not only knowledge of navigation and helmsmanship in difficult river conditions with a current of up to 5 knots, but also endurance when a huge vessel passes by you in the narrow channel of the Seaway, specially built in 1959 for the passage of ocean vessels to the Great Lakes.