(We're only letting this slide because one of your mods hecked up and asked a Q of the players in the plotting area, so they can go ahead and ask them back and we'll just move it over here. Note that usually we don't watch that section of the post, and questions there won't likely be seen!)

Will there be consequences to keep in mind should this body be brought to one of their houses?

It's possible. Nothing too insane, if so.

And is the sheriff keeping track of everyone that goes to the river now that it has been discovered?

Yes, the sheriff or one of his couple of subordinate cops can be seen keeping a pretty decent eye on rivergoers. It is a crime scene now, after all.