This region of the Patuxent River is 45 miles upriver from the Chesapeake Bay, yet the waters of Jug Bay are tidal. The tides cause waters to rise and fall throughout the day. The marshes here are called freshwater tidal wetlands.
Boaters, kayakers, and canoe paddlers, as well as those conducting research or field trips on foot into the tidal marshes, should check the tide table before planning activities. Paddlers attempting to return to shallow launching sites during low tide conditions might be unable to reach shore or could even become stranded in the barely-exposed mud. The two hours before and after high tide usually make for the best paddling conditions. Consult your tide table!