evidence: The Sir Creek area. The Green Line is the boundary as claimed by Pakistan, the red line is the boundary as claimed by India. The black line is the undisputed section.The dispute lies in the interpretation of the boundary line between Kutch and Sindh as depicted in a 1914 and 1925 map. At that time, the region was a part of Bombay Presidency of undivided India. After India's independence in 1947, Sindh became a part of Pakistan while Kutch remained a part of India. [...] India supports its stance by citing the Thalweg Doctrine in International Law. The law states that river boundaries between two states may be, if the two states agree, divided by the mid-channel. Though Pakistan does not dispute the 1925 map, it maintains that the Doctrine is not applicable in this case as it only applies to bodies of water that are navigable, which the Sir Creek is not. India rejects the Pakistani stance by maintaining the fact that the creek is navigable in high tide, and that fishing trawlers use it to go out to sea. Several cartographic surveys conducted have upheld the Indian claim.[2] Another point of concern for Pakistan is that Sir Creek has changed its course considerably over the years. If the boundary line is demarcated according to the Thalweg principle, Pakistan stands to lose a considerable portion of the territory that was historically part of the province of Sindh.