Tenn-Tom
Tidal influence an amazing distance above Mobile, maybe 30-50 miles. Thus, going up from Mobile in a sailboat or slow trawler is prudent to take tide state into account before starting. Also, Since Mobile and Lower Tombigbee unimpounded up to the Coffeeville lock, current in this stretch is always going to be very much a function of flow rate in the river system....generally much greater in winter and spring, less in summer and fall....except after a hurricane. On the other hand, the Lower Tombigbee runs through about as wild a stretch of country existing in the SE making it a truly special experience to go through it. That article referenced in Sail was an all out run for speed during summer length daylight hours with several crewmembers. For other times, anchorages need to be carefully planned for there aren't many good ones. Anchoring alongside the bank not pleasant with the zillion candlepower light of a tug waking you at 1am. The Rumsey guide, though a wonderful document and worth having just for the local history and wildlife articles, is out of date since Marian Rumsey has died. I got in trouble more than once trying to use one of her anchorages in the Tenn-Tom that were no longer viable.