south of Mandalay, is a natural depression acting as a catch basin for the
rainwater falling on higher elevation areas east of Irriwaddy River (and east
of Taungthaman Lake). The lake water
drains into the Irriwaddy River through a narrow stream. The U Bein (U Pain) bridge—Burmese speakers,
please tell us how U Bein (U Pain) should be pronounced—is over the narrow
middle part of the Taungthaman Lake, running east-west and connecting the rural
parts of the area to the urban sprawl of Mandalay.