Flat bottom of a river in a small town with cold clear water without pollution cleaned by a few aquatic plants at the bottom of the stream in France

flat bottom river small town cold water clear water pollutionfree clean bottom of the stream france riverbed smalltown river pristine water aquatic life river floor french stream freshwater riverbed plants clear stream aquatic habitat french town aquatic biodiversity clear riverbed stream cleaned town aquatic environment environmental river bottom scenic flora fauna tranquil shallow unpolluted pristine chilled water riverbed clarity streambed ecofriendly crystal clear riverine fresh flow untarnished nature fluvial uncontaminated clean habitat riverside