Thalweg Doctrine and Water Parting Principle

Facts for Prelims

Thalweg Doctrine and Water Parting Principle

News: The above terms are in news due to border conflicts between India, China and Bhutan.

What is Thalweg Doctrine?
 The Thalweg Doctrine, a part of International Law, aims to resolve water boundary disputes.
 The doctrine emphasises the idea of map-making by identifying rivers as the central point and measuring the boundary from the lowest point of a riverbed.

What is Water Parting Principle?
 It identifies territory with a concerned watershed, where the boundary is determined by the highest elevation surrounding that particular lake or river segment. Both these principles have been merged in the ongoing border negotiations between China and Bhutan.

What are the important places associated with this issue?
 Amochhu River, Chumbi Valley and Mount Gipmochi (Please remember these names and mark them on your world maps) 

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