Groundwater is an essential source of drinking water for many Indian urban habitats. Large numbers of people consume ground water instead of municipal tap water due to contamination of tap water. Groundwater is extrac...Groundwater is an essential source of drinking water for many Indian urban habitats. Large numbers of people consume ground water instead of municipal tap water due to contamination of tap water. Groundwater is extracted from thousands of bore wells, and used for potable purpose without proper testing and treatment. This paper describes a groundwater quality monitoring strategy and database model developed for Gulbarga city, located in Karnataka, India. Sampling wells are selected one each in 55 wards of the city corporation having easy access for regular sampling. Various attributes of sampling wells including their spatial coordinates, location address and a photograph are registered for ready recognition on site. Water samples are collected and analyzed for various physico-chemical parameters. Spatial coordinates and levels of sampling points are measured on site using a hand held GPS instrument. Gulbarga city map is digitized. A GIS database of the measured spatial and water quality data is developed using ArcGIS Desktop 9.3, and ground water quality maps are prepared which may serve as useful tools for developing policy, and regulatory mechanism for sustainable groundwater use.展开更多
The paper examined the state of GIS （geographic information systems） knowledge and adoption in Nigeria, identified factors affecting its implementation and finally discussed methods of enhancing its use in Nigeria. ...The paper examined the state of GIS （geographic information systems） knowledge and adoption in Nigeria, identified factors affecting its implementation and finally discussed methods of enhancing its use in Nigeria. Administrative records of some institutions and information obtained from published articles in journals and text books were used for the study. Records indicate that GIS is relatively young in Nigeria and in terms of development, it is at its youthful stage. The adoption and use of GIS is low at both Federal and State Government levels. However, factors such as, lack of political will, shortage of experts to train the professionals, lack of standardization of digital data, database development and management problems, institutional constraints, security implications of digital maps and poor funding have been inhibiting full adoption, implementation and use of GIS in Nigeria. There is the need to develop a GIS vision in the country and government should formulate policy and create enabling environment for the adoption and implementation of the new technology.展开更多
文摘Groundwater is an essential source of drinking water for many Indian urban habitats. Large numbers of people consume ground water instead of municipal tap water due to contamination of tap water. Groundwater is extracted from thousands of bore wells, and used for potable purpose without proper testing and treatment. This paper describes a groundwater quality monitoring strategy and database model developed for Gulbarga city, located in Karnataka, India. Sampling wells are selected one each in 55 wards of the city corporation having easy access for regular sampling. Various attributes of sampling wells including their spatial coordinates, location address and a photograph are registered for ready recognition on site. Water samples are collected and analyzed for various physico-chemical parameters. Spatial coordinates and levels of sampling points are measured on site using a hand held GPS instrument. Gulbarga city map is digitized. A GIS database of the measured spatial and water quality data is developed using ArcGIS Desktop 9.3, and ground water quality maps are prepared which may serve as useful tools for developing policy, and regulatory mechanism for sustainable groundwater use.
文摘The paper examined the state of GIS （geographic information systems） knowledge and adoption in Nigeria, identified factors affecting its implementation and finally discussed methods of enhancing its use in Nigeria. Administrative records of some institutions and information obtained from published articles in journals and text books were used for the study. Records indicate that GIS is relatively young in Nigeria and in terms of development, it is at its youthful stage. The adoption and use of GIS is low at both Federal and State Government levels. However, factors such as, lack of political will, shortage of experts to train the professionals, lack of standardization of digital data, database development and management problems, institutional constraints, security implications of digital maps and poor funding have been inhibiting full adoption, implementation and use of GIS in Nigeria. There is the need to develop a GIS vision in the country and government should formulate policy and create enabling environment for the adoption and implementation of the new technology.
