#watercourse

• Agricea — The name of a small watercourse (stream) or a valley located within the geographic area of Romania, carrying local hydrographic importance. It represents a specific rural hydronym, often used by local communities as a landmark for outlining agricultural properties or pastures.
• Albâia — The name of a watercourse (Albâia River) or a micro-geographical and hydrographic region located in the Romanian Carpathian or peri-Carpathian space. Capitalized, the proper noun individualizes a specific hydronymic element, structurally integrated into local river basins and recognized in regional topography.
• Alontie — A rare toponym, archaic designation, or local geographical variant used in the past to designate a small watercourse, a valley, or a small rural settlement in the historical region of Eastern Europe or adjacent hydrographic basins. This structural land-identification element is preserved in old cartographic maps and medieval estate boundary registers.
• Alzette — A medium-sized river in Western Europe, approximately 73 kilometers long, which rises in France and flows primarily through the Grand Duchy of Luxembourg, crossing its capital city and emptying into the Sauer River. This watercourse represents a major hydrographic and landscape structural axis for the region, renowned for the deep valley it carves into Luxembourg sandstone and for the historical fortifications built along its banks in Luxembourg City.
• Anoaica stream — A regional toponymic designation, proper name attributed to a minor watercourse (stream) or a narrow valley within the geographical area of Romania. In local microtoponymy, the term preserves the structure derived from folk names or native surnames, functioning as a stable cartographic benchmark for delimiting old rural properties or community pastures.
• Apa — The name of a border river located in South America, which originates in the Amambay massif in Brazil and flows westward, forming an extensive natural border between Brazilian and Paraguayan territories until its confluence with the Paraguay River. This watercourse plays a crucial ecological and geopolitical role in the region.