A couple of little terrain placement questions

[Barritus]

1. According to the rules, BUAs can be placed on hills, adjacent to roads, waterways, seas, lakes and table edges, but they can't be placed adjacent to rivers (page 19). Is this correct? If so, is it intended?

2. According to page 19 of the rules, roads can't be superimposed on seas, waterways or lakes. According to page 21 of the rules, roads can be superimposed on any land terrain. The second option appears to rule out placing roads over rivers. Is this correct? If so, is it intended?

[Orcoteuthis]

1. According to the rules, BUAs can be placed on hills, adjacent to roads, waterways, seas, lakes and table edges, but they can't be placed adjacent to rivers (page 19). Is this correct? If so, is it intended?

Seems likely to be intended, as the same paragraph says BUAs can be passed through by rivers.  Now why it should be intended I have no idea.

2. According to page 19 of the rules, roads can't be superimposed on seas, waterways or lakes. According to page 21 of the rules, roads can be superimposed on any land terrain. The second option appears to rule out placing roads over rivers. Is this correct? If so, is it intended?

I don't think "land terrain" is defined anywhere, so I'd go with p19. Plus, p20 tells explicitly tells us that roads can cross rivers, and disallowing them to do so would be absurd from the historical perspective (bridges and fords have been important in many battles).