Abstract

To manage the HCMC drainage system, the city’s Urban Drainage Company has been developing a desktop GIS based on ArcGIS software, ESRI. In this system, drainage database is organized into Geodatabase model and is stored in a server placed at the company headquarter. The company’s satellite offices can get access to the server’s database through a virtual private network. With this arrangement, investment cost will increase rapidly if the company is going to equip GIS software to workstation of every related staff. To avoid this investment burden problem, a WebGIS system has been developed based on ASP.NET framework of Microsoft, as well as the open source products Geoserver, and OpenLayers. With this webGIS, the company staff can access to drainage database from everywhere through the Internet by using just a normal web browser making requests for data through a standard web page. They can also carry out several basic GIS functions, such as viewing, querying, and doing statistics and making graph. The system has been tested and proved to work effectively enabling the company staff to cost-effectively exploit its drainage Geodatabase through the internet.