The main mouth of the Ocklawaha is at 29 28 13 n 81 41 27 w, and the mouth of Bear Creek is 29 28 3 n 81 41 29 w, just 1000 feet or so south of the main Ocklawaha. Bear Creek is actually part of the Ocklawaha, and if you're in a kayak, when you get a few miles up you can cross over into the main Ocklawaha through a small narrow channel. Once you get over the bar (clearance about 3 feet) into the Ocklawaha from the St Johns, you hardly have to look at your depth sounder anymore usually over 10 feet deep. Even near and above the Hwy 19 bridge it's deep enough for a C-Dory all the way to the dam, though I take it slow.
It's also fun to use the Buckman Lock to explore the reservoir above the dam, but you have to watch the lock schedule, and the reservoir is chock full of tree stumps. Although I saw lots of shallow-water habitat in the reservoir, good for wading birds, I still think getting rid of the dam is a good idea. The river needs to flush itself occasionally with some flood waters, and it can't do that with the dam sitting there. I think there's potential for miles more cruising, perhaps as far as the Harris Chain of Lakes if the river gets a chance to clean itself. I've also heard, not from bass fishermen, but others, that clearing out the dam will greatly improve the fishing.
Watch out on the weekends in the Ocklawaha for some careless boaters, however. I've seen several near tragedies, and I've had wakes splash into the cockpit of my kayak in the narrower sections, from passing boats still up on plane, and only a few feet away.