1 / 33

Groundwater Monitoring Network Plan in TAIWAN

braeden
Download Presentation

Groundwater Monitoring Network Plan in TAIWAN

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

    1. Groundwater Monitoring Network Plan, TAIWAN Groundwater Monitoring Network Plan in TAIWAN Yih-Chi Tan, Ph.D. Ph. D. of Cornell University Professor of Bioenvironmental Systems Eng. Dept. National TAIWAN University Director, Hydrotech Research Institute, National TAIWAN University

    2. Groundwater Monitoring Network Plan, TAIWAN Introduction Taiwan, situated in the Western Pacific Ocean, is about midway between Japan to the north and Philippines Islands to the south. Taiwan and the southeast coast of Mainland China are separated by Taiwan Strait. The area of Taiwan is about 36,000 km2.

    3. Groundwater Monitoring Network Plan, TAIWAN Water Resources Utilization in Taiwan, 2005

    4. Groundwater Monitoring Network Plan, TAIWAN Introduction Beginning from 1992, the Water Resources Agency has actively promoted the project “Groundwater Monitoring Network Plan in Taiwan”. The agency is in charge of planning, supervising, and funding supports for this project. The Central Geological Survey of MOEA, along with many other research institutions has all participated in this project. The total budget for this project is about 6.4 billions NTD (approximate 186 millions USD).

    5. Groundwater Monitoring Network Plan, TAIWAN Scope of the Work--Direct Goals - To establish the regional groundwater monitoring network system in Taiwan, to collect the long-term integrated information related to the hydrogeology, groundwater hydrology, and groundwater quality. To conduct the related investigations on groundwater hydrology and hydrogeology, to fully understand the characteristics of each groundwater flow regime, and to distinguish the geological and hydrological systems of each area.

    6. Groundwater Monitoring Network Plan, TAIWAN - To construct a groundwater hydrological information database and the integrated information system (including the decision-making supporting system), to facilitate the utilization and sharing of groundwater related data. To enact and promulgate the principles for groundwater resources utilization and conservation. Scope of the Work --Direct Goals

    7. Groundwater Monitoring Network Plan, TAIWAN To regulate the courses of actions for both of the groundwater resources utilization and conservation in each area. To provide a guideline for groundwater management and land subsidence mitigation plan in each area. To establish the regional conjunctive operation and management projects for surface water and groundwater resources in each area. Scope of the Work --Indirect Goals

    8. Groundwater Monitoring Network Plan, TAIWAN Scope of the Work --Stage Goals

    9. Groundwater Monitoring Network Plan, TAIWAN Scope of the Work --Stage Goals

    10. Groundwater Monitoring Network Plan, TAIWAN Establishment of Groundwater Monitoring Networks

    11. Groundwater Monitoring Network Plan, TAIWAN Establishment of Groundwater Monitoring Network Up to 2005, 525 groundwater monitoring wells have been established (approximate 1station/25km2). These monitoring wells and stations collect the groundwater level data from aquifers of different depth. During the construction period of monitoring wells, pumping tests were performed to determine the characteristics of aquifer. The analysis of transmissivity and storage coefficient for the aquifer can be used for groundwater resources potential assessment and flow regime model simulation. Accomplishments and Applications

    12. Groundwater Monitoring Network Plan, TAIWAN

    13. Groundwater Monitoring Network Plan, TAIWAN Hydrogeological Investigation The hydrogeological investigations are performed with the establishment of the monitoring well networks. The drilling cores were photographed and recorded. Other analyses, such as well logs, fossils, geologic dating, and chemical compositions, … etc., were also conducted. Within the last decade of this project, the hydrogeological conceptual models for each groundwater division have been competed for regions such as Choshui River Alluvial Fan, Pingtung Plain, Chianan Plain, Lanyang Plain, and Hsinchu-Miaoli Coastal areas. Accomplishments and Applications

    14. Groundwater Monitoring Network Plan, TAIWAN

    15. Groundwater Monitoring Network Plan, TAIWAN

    16. Groundwater Monitoring Network Plan, TAIWAN

    17. Groundwater Monitoring Network Plan, TAIWAN Accomplishments and Applications Well Maintenance Work Well camera technique can examine the monitoring well body and the well screens. The technique can monitor the inclination of well casing, and broken screens. The well development technique for monitoring wells in Taiwan is adopting the newly developed technique dual direction with high pressurized water column. Based on the reversal principal of pumping motor, the groundwater in the well casing is pressurized by the upper and lower pumps. The high pressure water ejected from the nozzle can well washes the well wall.

    18. Groundwater Monitoring Network Plan, TAIWAN

    19. Groundwater Monitoring Network Plan, TAIWAN Decision Support for Groundwater Resources Management. The main purpose of the system is to increase the efficiency and quality for groundwater resources management and decisions. The system includes three subsystems: information retrieval and analysis subsystem, groundwater resources trend analysis subsystem, and groundwater operation and management subsystem.

    20. Groundwater Monitoring Network Plan, TAIWAN

    21. Groundwater Monitoring Network Plan, TAIWAN

    22. Groundwater Monitoring Network Plan, TAIWAN Accomplishments and Applications Groundwater Resources Development and Conservations Recently, Taiwan government has adopted the concept of sustainable development from “Agenda 21”, and drafted three major principles for groundwater conservations, The draft are also based on principles of other countries, opinions of experts and scholars, and current status and demand for the country. In accordance with the three major principles, four strategies and eleven measures for groundwater conservations were subsequently drafted in order to fulfill concept of sustainable development.

    23. Groundwater Monitoring Network Plan, TAIWAN

    24. Groundwater Monitoring Network Plan, TAIWAN Regional Groundwater Resource Mappings WRA had proposed a mapping project that was to compile the regional groundwater hydrographs of Taiwan, in the year of 2000. A set of three maps in the scale of 1:250,000, for regional groundwater resources characteristic indices such as modulus of groundwater flow, coefficient of groundwater flow, and coefficient of river recharge, were completed over the project period from late 2000 to the end of 2002. Accomplishments and Applications

    25. Groundwater Monitoring Network Plan, TAIWAN

    26. Groundwater Monitoring Network Plan, TAIWAN Accomplishments and Applications Groundwater Quality Monitoring Plan Environmental Protection Administration (EPA) has established another groundwater quality monitoring network in order to investigate the trend of shallow groundwater pollution, broad cast the warning of potential polluted area, and trace the pollution sources. Through the groundwater monitoring network, WRA handles different levels of groundwater quality analysis and periodic monitoring for indicator wells at different classes.

    27. Groundwater Monitoring Network Plan, TAIWAN

    28. Groundwater Monitoring Network Plan, TAIWAN Research of Groundwater Anomalies Before and After Earthquake WRA carries out the ” Research of Groundwater Anomalies before and after Earthquake”. Sixteen seismic-groundwater anomalies monitoring wells will be constructed. The physical items of atmospheric pressure, rainfall, groundwater level, and water temperature are measured. The chemistry items of radon gas, Cl-, NO3-2, Ca+2, K+, and some anions or cations are also analyzed. The data of GPS time, surface displacement and seismic motions via GPS measurement, gathered by Central Weather Bureau, are analyzed and studied. Accomplishments and Applications

    29. Groundwater Monitoring Network Plan, TAIWAN

    30. Groundwater Monitoring Network Plan, TAIWAN Perspective and Prospects Education Training Current participating organizations of this project are actively promoting the fundamental educational training programs to the local public groups. The ideas of the Groundwater Monitoring Network Plan have been included into the science class teaching. Not only the school children, but also the public groups are promoted the rational concepts of natural resources protection; for such work will be beneficial in proceeding to the future processes of the monitoring network establishment.

    31. Groundwater Monitoring Network Plan, TAIWAN Perspective and Prospects Conjunctive use of groundwater and surface water In the future, with the information provided by monitoring network system, more research works are to be performed; including groundwater anomalies before and after earthquakes, pore water pressure of deep aquifer and soil liquefaction problems, extreme metrological events and groundwater recharges, and new monitoring technologies that combines the metrological information for the natural disasters. Meanwhile, purposes of groundwater and surface water conjunctive use are achieved.

    32. Groundwater Monitoring Network Plan, TAIWAN Prospecting the future, according to the experiences cumulated, the monitoring techniques will be updated from time to time. The management system will be reviewed and modified. The fundamental educational training programs will be reinforced, as well. Perspective and Prospects

    33. Groundwater Monitoring Network Plan, TAIWAN It is nevertheless the primary goal that the concepts for water resources conservation and protection are to be deeply rooted in the public minds; namely, to reach the development and application perfection for the proposed planning of the Groundwater Monitoring Network, and to achieve the ultimate goal of sustainable uses of water resources. Perspective and Prospects

    34. THANK YOU THE END

More Related