Barrels Out of Bond

Out they went under the overhanging branches of the trees on either bank. Bilbo wondered what the dwarves were feeling and whether a lot of water was getting into their barrels. Some of those that bobbed along by him in the gloom seemed pretty low in the water, and he guessed that these had dwarves inside.

Normal sudoku rules apply.

Begin by transcribing the digits for the Elven Circle from the previous puzzle.

Digits in cages sum to the small clue, if given.

Along the Forest River (blue line), adjacent digits differ by at least 5.

Digits in barrels (brown circles) are odd.