Just a general comment - all of these look like a decade and a half old imports during when the landuse was first mapped. In my experience, these are almost always imprecise and often just wrong. Minor water bodies in forested and wetland areas like these can easily disappear over time, especially since new melioration/ditch systems are commonly built. Not too many water bodies in Latvia are seasonal - if it's not visible on aerial, it's most likely gone. If LIDAR shows areas as flat and there's no obvious water, it's probably safe to assume it's wetland.

So these can probably be retraced or deleted from aerial, it definitely wouldn't be any worse than it is now. A survey is of course possible, but I should note that there are hundreds of examples of minor mismatching water bodies around Latvia, so I'm not sure how likely such places are to be surveyed any time soon (especially through poorly-accessible wetland). May be we can keep one note for this whole general area? It's a common location for biking through (there's a track where a quarry access railway used to be).

Mostly, we just need someone with free time to (re)draw from aerial.