The water has a big meaning in From.

\- The whole case of Boyd's boat which he never really get, 

\- his favorite song "If I had a boat" even the radio was playing that in diner house, 

\- In the caves of monsters, there are drawings of people in boats, 

\- On the website where was the news about Tabitha's family missing, there were an information, about floods which sometimes go in the camping sites where they were going initially, 

\- In the calendar on the wall of Donna's room, there is a boat probably, 

\- the whole thing about lake of tears, 

\- When Elgin come to the city, he asked to see the water place, because he saw it in his dream in the bus, 

\- Interestingly there is a lighthouse, but nobody saw the sea or ocean, 

\- the Angkooey creepy kids look drowned,

\- look how often they show how some people are drinking water or tea - I know, it just casual thing to show, but the creators decided to show scenes like that really often, 

\- the same case with the scene with Sophia - seemingly just looking on boat toy but it is intentional probably (similar to Sophia looking on ballerina figure earlier),

\- the thing about the bottle tree- What do you usually associate with a bottle with a message? Yes, exactly – a letter in a bottle that you throw into water,

\- the kimono woman tried to drown Elgin,



There are probably more hints



The water motif is important