It's not a particularly deep river. This is demonstrated by the fact that a local oil company (Rix) gets deliveries by barge down the river and has to time these deliveries with the highest tide.
Interesting, thank you. I google mapped the whole length last night - it's a few miles till the sea with lots of sharp bends so thinking anything would hit a barrier before the sea?
Another poster did post tides earlier on another thread, if still around that would be useful (to me if noone else). TIA