BETWA, a river of India, which rises in the native state of Bhopal in Malwa, and after a course of 36om., for the most part in a north-easterly direction, falls into the Jumna at Hamirpur. A weir is thrown across the Betwa about 15m. from Jhansi town, whence a canal 168m. long takes off irrigating some 81,000 acres; similar works have been carried out elsewhere on the river.