 On the south, a nearly flat valley connects with but does not drain into or out of the Pare Chu river which is part of Sutlej river basin.Lingdi Nadi, major tributary of Tso Moriri, drains western catchment area of the lake and joins the lake on its south side.This valley contains the Nuro Sumdo wetlands (with a catchment area of ), a boggy area that mostly drains into the Pare Chu.