We know we have flood plains to the E (and S-SE with a stretch of imagination). This is not ideal food, one could say, but it certainly is better than none - if we are going to risk jungle disease, why not FP disease?
IMHO, it beats the jungle city to the north. If I had to send a settler blindfolded he'd go E-E-NE to catch FPs and whatever water that is. That we can send our warrior over the mountains to the south will probably decide on wether to send S#1 to the S FP's or to the FP's we know.
Incidentally, this reminded me of how nice it was to move several tiles a turn along unroaded river tiles when playing freeciv back in computer college classes.