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The Babai River ((ネパール語:बबई नदी)) originates in and completely drains Inner Terai Dang Valley of Mid-Western Nepal. Dang is an oval valley between the Mahabharat Range and Siwalik Hills in its eponymous district. Dang was anciently home to indigenous Tharu people and came to be ruled from India by the House of Tulsipur who also counted as one of the Baise Rajya ((ネパール語:बाइसे राज्य))—a confederation of 22 petty kingdoms in the Karnali (Ghagra) region. About 1760 AD all these kingdoms were annexed by the Shah Dynasty during the unification of Nepal, except Tulsipur lands south of the Siwalik Hills were not taken. Since Dang Valley was somewhat higher, cooler, better-drained and therefore less malarial than most of the country's Inner Terai, it was settled to some extent by Shah and Rana courtiers and other Paharis long before DDT was introduced to control the disease-bearing ''Anopheles'' mosquito. Exiting Dang Valley and its district, the Babai enters Salyan District and flows between sub-ranges of the Siwalik Hills along their west-northwest axis. Sharada Khola drains about half of Salyan's larger Middle HIlls region before cutting through the Mahabharat Range and joining the Babai from the right. Salyan was another Baise principality before unification. About beyond this confluence, the Babai crosses into Bardiya District and enters Bardiya National Park. The river continues another west-northwest until the enclosing Siwalik hills fall away and the Outer Terai begins. At this point the river crosses Nepal's main east–west Mahendra Highway and exits the national park. On the Outer Terai the Babai is finally free to gradually bend left toward the main inclination of the Indo-Gangetic Plain. The river flows south some and enters India's Uttar Pradesh state. The Babai continues about (straight line) south from the border before joining the much larger Ghaghara from the left at about west-northwest of Bahraich. This confluence is about upstream of the Sharda (Mahakali) confluence from the right. In Nepal the catchment of the Babai is bordered by that of the Rapti on the north, east and south; and by the main Ghaghra catchment on the west until their confluence. In India the Rapti takes a more easterly course, joining the Ghagra some southeast of the Babai's confluence. ==See also== * *List of rivers of Nepal 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Babai River」の詳細全文を読む スポンサード リンク
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