Trapeang Thmor reservoir or Ang Trapeang Thmor basin is a large-scale irrigation infrastructure, currently located in the area of Phnom Srok district, Banteay Meanchey province. The large reservoir of the basin has its origins in Angkor, with its ancient path over the dike, a journey from Yasodhara (Siem Reap) to the Banteay Chhmar and other geographical areas of the northeastern plateau of Thailand.