Heritage Farm Park, Walkersville, Maryland- question on guide information

The guide said there's a river OB along the front 9, I just played it and not only was there no river, there's no way there could have ever been a river there, it's just a grassy field and soccer. Anyone know why it says that? Should I change it or does it just rain a LOT there usually..It was confusing

[Ben Calhoun]

hmm..put up a little arrow for the next guy? good course though not coming back just to play hole #7 ill start reading tee sign #'s

[Ben Calhoun]

hmm..put up a little arrow for the next guy? good course though not coming back just to play hole #7 ill start reading tee sign #'s