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XXVI I I
Future plan for computerization
The Royal Irrigation Department (RID) has developed data system which include computerization of
storage, Processing and retrieval of rainfall data since 1969. During the stream flow data system was being
developed at RID in 1976, the National Economic and Social Development Board has made in agreement with
the Asian Institute of Technology (AIT) to study on “Development of Water Resources Information System for
Thailand”. In the Contract AIT will recommend a standardized procedure to various agencies for collecting
and recording hydrometeorological and hydrological data and develop a computer based data storage and
retrieval system to process, store, analyze and publish the data furnished by various agencies involved in data
collection.
The Water Resources Information System for Thailand (WRIST) package has been designed to
provide permanent computer media storage of hydrometeorological and hydrological data in such a form that
it can be readily added, to, altered or deleted and also called for analysis and presentation as required. The
Indexed Sequential Method has been used for mass storage of the data and the processing and storing
system have been designed taking into consideration the data processing schemes followed by the agencies,
the probable frequency of retrieval expected and also the order or grouping of data elements differently for
different agencies so that the system is best suited and efficient in operation for the current requirements and
anticipated uses by the agencies in Thailand. The system will process and store data agency wise. The
system is also designed to allow for the inclusion of additional data types if the need arise in the future. IBM
370/145 Computer facility at the AIT Bangkok will be used to develop the WRIST package. Operating
programs will be written in ANS COBOL language independent of machine hardware to facilitate machine to
machine transferability of the package for medium scale computers. The system has the data retrieval facility
in the form of monthly and yearly publication agency wise; row data and analysis data either in the form of
computer printouts or in the direct accessible forms like cards of tapes controlled by basin, Sub-basin, region,
station and data type. Data stored can also be available in the form of punched cards or punched card image
on magnetic tapes so that they can be accessed by FORTRAN programs.
Organization
Stream flow data presented herein are from the hydrologic network operating by the Hydrology
Division of the Royal Irrigation Department (RID). Field data collection and office data processing as well as
yearbook publication are hydrologic activities undertaken by the Division.
The organization structure of the Division is diagrammatically shown below :-