Buddhist Dictionary of Pali Proper Names by G P Malalasekera
Jajjaranadī
Jajjaranadī:A river in Ceylon,the present Deduru-Oya.On the river was the famous causeway known as Kotthabaddha,restored by Parakkamabāhu I.(Cv.lxviii.16),who also built a dam across the river at Dorādattika. Ibid.,vs.37; see also lxxix.67.