|คำค้น||:||Area-based , Capacity Building , DSS , information system , Social Process , Water deficit , Water Resources Management , ทรัพยากรน้ำ , ระยอง , สารสนเทศ|
|อ้างอิง||:||http://elibrary.trf.or.th/project_content.asp?PJID=RDG4930025 , http://research.trf.or.th/node/1482|
The drought event in the year 2005 in the Eastern Part is mainly attributed from the limited raw water sources and the fluctuation of rainfall which can not respond to the expansion of industries in Rayong Province. Hence, there is a need to develop tools to help manage water in various forms in order to find suitable counter measures for the area. The information system, which is an area based water resources management System, was developed through social participation process and aims to help make better understandings among stakeholders to grasp problem situation and to setup mutually agreeable counter measures. The social participation process emphasized on (1) the study and network creation among communities in the area and (2) the study and introduction of data collection process in which communities can verify and learn their own water use behaviors and water use problems with the hypothesis that capacity building of water users on water management information system will render meaningful public participation in water resources decision making. The study found that the participation in information system development process from community representatives had various activities, i.e., data collection, data verification, criteria setup, water status discussion and views on the information system etc. The output of this participation created the water management information system and furthermore, the direct information from local administrative unit helped updating the information system and gained more reliability from the people. Besides, the tested local administrative units can also use the information from the system for their own operation. At this moment, it can be concluded that the developed information system help developing local administrative unit potential especially water status warning for advanced preventive measures in additional to the routine operation of concerned governmental agencies. Capacity building for community in the project gave clear impact to information management in the local administrative units later than community as a whole. There is a need to monitor the utilization of the information of both local administrative units and public users whether the system can develop and promote capacity building and participation for water management decision in the general public sector in the future. The area-based water management study aims to collect, study, analyze, and make suggestions on water sources and water management in the study area. The study covers surface water, groundwater, water use, and water demand and water management. Water resources in Rayong Province classified by hydrological conditions can be divided into two sub-basins, i.e., 1) Klong Yai sub-basin (Rayong River) with the watershed area of about 1,800 square kilometers and 3 main reservoirs i.e. Dok Krai, Nong Pralai and Klong Yai, and 2) Prasae subbasin with the watershed of about 1,500 square kilometers and 2 reservoirs of Prasae and Klong Raoak. The water management in Rayong Basin is under 2 main authorities, i.e., Water Resources Department and Royal Irrigation Department. Both authorities have different operations and functions. The main tasks of Provincial Water Resources Department are to disseminate, technically coordinate in village water supply construction and maintenance and to promote water user network setup, though the construction of village water supply had already been transferred to local administrative unit. The Royal Irrigation Department emphasizes water management in Klong Yai sub-basin, which is to operate Dok Krai, Nong Plalai and Klong Yai reservoirs for the optimum water allocation. At this moment, the three reservoirs release water into Klong Yai River. These reservoirs are linked together with the Dok Krai-Nong Plalai and Nong Plalai-Klong Yai transmission pipelines. In normal state/situation, Provincial Irrigation Office will allocate water to users as agreed with daily data collection and verification. Groundwater use from shallow wells and deep wells in Rayong Province is estimated to be about 11.24 M cu. m per year and the groundwater development potential in Klong Yai subbasin is in Bangbutr, Zakbok and Bankhai districts. The potential yield of each well is about 20 cu.m per hour and water quality is good with suspended solid of less than 500 mg/litre. Rayong Province uses a large amount of water due to the increase growth in urbanization and industries. Main raw water sources are from surface water in reservoirs. The main water development authorities in Rayong Province are Royal Irrigation Department, Groundwater Resources Department, Provincial Waterworks Authorities, local administrative units. Besides, there is a private entity involved in water supply, i.e., East Water Company which got concession to receive water from Royal Irritation Department and deliver the water mainly to industries via pipelines. The study of water use and demand in Rayong Province comprised four categories, i.e., domestic, industrial, agricultural and ecological use. The amount of water uses was estimated to be 926.6 M cum/year in 2005 and water demands, estimated based on field survey, are around 1,223.40 and 1,311.20 M cum/year in 2015, and 2025 respectively. Water management simulation in the study area compared conditions with present status and with/without water system linkage, partial linkage among reservoirs. Details of case studies are as follows. Case 1 present status (without any linkage among reservoirs) Case 2 with Dok Krai-Nong Plalai reservoirs transmission line Case 3 with Klong Yai-Nong Plalai reservoirs transmission line Case 4 with Dok Krai-Nong Plalai-Klong Yai reserviours transmission line Case 5 with Nong Plalai-Klong Yai-Prasae reservoirs transmission line Case 6 with Dok Krai-Nong Plalai-Klongyai-Prasae reservoirs transmission line The simulations reveal that the transmission line linking among reservoirs when compared with/without transmission line help solving water deficit about 3.46-3.69 M cu.m per year. However, if there is an expansion of irrigated area and with transmission line, water deficit will increase about 1.56-2.15 M cum per year which may be attributed from unsuitable water allocation which induced inefficient reservoir operation. In case there is water transferred from Pasae Reservior to Klong Yai sub-basin, water deficit in Klong Yai sub-basin will decrease, i.e., water deficit decrease about 9.28-9.5 M cu. m per year in case of full expansion of irrigation area as planned and water deficit decrease about 3.61-3.84 M cum per year if irrigation area reduce 50 % as planned. The development of information system for water management was designed for users to search for data and analyses via computer internet network. The computed and analysed data were kept in database with proper engineering verification process to report water status from the past up to now together with advanced water warning data. The system also provides decision support tools, knowledge-base to help proper water allocation. In order to have correct answer or minimum deviated results, database in the system must be systematically compiled with the same keywords and structure to avoid redundancy and save data storage space. The database system must also be designed for joint use of various users in the same time. The developed water management information system comprised; 1) area based water management information system, 2) decision aided analysis tools and 3) knowledge database. The information system part displays water uses in domestic, agricultural and industrial sectors and also included emergency water and water balance analyses. Knowledge database comprised laws/rules and regulation, plan and operation guides. The contact records among users and authorities were also included to display basic data and emergency responses of various sectors. Data display can be mainly categorized into three types, i.e. 1) mapping data, 2) statistical data and 3) document data. Analysis tools in the information system included the analysis tools of rainfall, surface water, groundwater well, reservoir inflow, demand of domestic, agricultural, industrial sectors. For local area water management, water deficit (difference of water supply and water demand), water status at present and near future are displayed. Basin-wise tools included water allocation among reservoirs i.e., Dok Krai, Nong Plalai, Klong Yai reservoirs. Finally, water status/situation report is used to provide options of alternatives for decision with the help of AHP method. The testing of the information system were carried out by nine representatives, i.e., a provincial irrigation officer with data input and verification for 12 months, local administrative units (Tapong, Nata Kwan, Mae nam Ku, Nong Bua, Lahan, Pruankdaeng, Bankai and Nongrai) with data input and two months system testing. It is found that the system developed is beneficial for water operation and needed to be used continuously till the system becomes a part of routine work in the future.
สุจริต คูณธนกุลวงศ์ . (2552). การพัฒนาระบบสารสนเทศเพื่อจัดการทรัพยากรน้ำเชิงพื้นที่พร้อมระบบสนับสนุนการตัดสินใจและกระบวนการทางสังคมในบริเวณพื้นที่จังหวัดระยอง.
กรุงเทพมหานคร : สำนักงานกองทุนสนับสนุนการวิจัย.
สุจริต คูณธนกุลวงศ์ . 2552. "การพัฒนาระบบสารสนเทศเพื่อจัดการทรัพยากรน้ำเชิงพื้นที่พร้อมระบบสนับสนุนการตัดสินใจและกระบวนการทางสังคมในบริเวณพื้นที่จังหวัดระยอง".
กรุงเทพมหานคร : สำนักงานกองทุนสนับสนุนการวิจัย.
สุจริต คูณธนกุลวงศ์ . "การพัฒนาระบบสารสนเทศเพื่อจัดการทรัพยากรน้ำเชิงพื้นที่พร้อมระบบสนับสนุนการตัดสินใจและกระบวนการทางสังคมในบริเวณพื้นที่จังหวัดระยอง."
กรุงเทพมหานคร : สำนักงานกองทุนสนับสนุนการวิจัย, 2552. Print.
สุจริต คูณธนกุลวงศ์ . การพัฒนาระบบสารสนเทศเพื่อจัดการทรัพยากรน้ำเชิงพื้นที่พร้อมระบบสนับสนุนการตัดสินใจและกระบวนการทางสังคมในบริเวณพื้นที่จังหวัดระยอง. กรุงเทพมหานคร : สำนักงานกองทุนสนับสนุนการวิจัย; 2552.