The Dohan river (Hindi: दोहान नदी, Sanskrit: वधूसरा, IAST: Vadhūsarā), is a rain-fed river that originates at Mandholi village near Neem Ka Thana in Sikar district of Rajasthan and then disappears in Mahendragarh district in Haryana where it used to be a tributary of Sahibi River, which in turn is a still flowing tributary of Yamuna. Its canalised portion in one of its paleochannel in Haryana is called the "Outfall Drain No 8". At Mandholi there is a small gomukh from where the river begins.