Historical Background
Originally, water management in the upper
part of north-eastern region was under supervision
of Regional Irrigation Office 4, Khon Kaen province
(Regional Irrigation Office 6 in present). Later in
B.E. 2545 (A.D.2002), Royal Irrigation Department
had an order to restructure its organization and
establish 5 irrigation offices from 12 offices to 17
regional irrigation offices where are located in
regions throughout the country. The department
redivided responsible areas in regions; by Regional
Irrigation Office 5 is one of new offices which
divided from Regional Irrigation Office 4 (previously
office located in Khon Kaen province). The
headquarters of Regional Irrigation Office 5 (previously
office located in Ubon Ratchathani province) is
located in Udon Thani province and its responsible
area covers 6 provinces e.g. Loei, Nongbua Lamphu,
Udon Thani, Nongkhai, Sakon Nakhon and Bung Kan
where are provinces in upper part of the north-eastern
region and entrance to Indochina.
After Regional Irrigation Office 5
established in B.E. 2545 (A.D.2002), Nong Samrong
reservoir area, Moomon sub-district, Muang district,
Udon Thani province where is a headwork of medium
reservoir under the operation of Udon Thani
Irrigation Office, was selected to be an office of
RIO 5. The first office had a single storey building,
and then it was rehabilitated to be
a standard building. Until B.E.2556
(A.D.2013), RIO 5 was established for 10 years ago
by management of 5 Directors; the current Director
is Mr. Saksiri Yoosuk. He takes this position since
November B.E. 2555 (A.D.2012) – present.
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