I have a question regarding water tokens scoring. The picture in the rulebook shows 3 different examples of placement at the beginning of the game : 1, 2 or 3 points.
Is it possible later in the game to score up to 6 points for a newly-placed water token if it is completely surrounded by water spaces?
Yes. But it takes a while to get it to that point and others may "steal" it from you as it is a valuable target. Typically the most I can get in a game is 5 points at one time and that is not too common.