Alternatively known as a drainage area or catchment area, these refer to the areas drained by a specific outlet, such as a river or lake.
Beautiful Maps of the World's Watersheds
Earth:Drainage basin - HandWiki
Major Rivers Of The Middle East - WorldAtlas
1.1.2 The Drainage Basin, Edexcel IGCSE Geography Revision Notes 2019
Drainage Basins and Watersheds Simplified
Mapping the World's River Basins by Continent
What are drainage basins and what are their characteristics? - Internet Geography
Mapping the World's River Basins by Continent
Drainage basin - Wikiwand
Watersheds of the World – The Decolonial Atlas
Watersheds of the World – The Decolonial Atlas
Hydrology Insight: From Basics to Conceptual Models and Hydrological Modelling, by Md. Asifur Rahman
Hydrological map, River Basins, Watersheds, Drainage