|
Track: Water Distribution, Wastewater, Sewer
Daene McKinney
The University of Texas at Austin
1636 W 6th Sreet Apt M
Austin, TX 78703
Telephone: 512-471-0073
Fax: 512-471-5870
E-mail: xcai@crwr.utexas.edu
Ximing Cai, David Maidment
GIS-Based Decision Support System (GDSS) for Regional Water Resource Allocation
The physical features, data, and models are integrated into a GIS environment to create a flexible support tool for regional water resources allocation decisions. The water distribution system is described as GIS features and attributes. Based on the spatial relationships within the real world, the GDSS derives an abstract water distribution network, which is the bridge between the real world and the mathematical models. For the users to bring in management policy and decision preference, network updating tools are provided to the users to modify the network and build the water distribution network based on their own interests and judgments. When the network is prepared, an Avenue program is used to write a mathematical model based on a general multiple objective formulation for regional water allocation and interactions with the users. The model is written in GAMS language, which is associated with GAMS, a popular optimization software. Finally, the GDSS calls GAMS to solve the model through an ArcView GAMS
interface built within the GDSS. The result from the modeling is expected to support multiple objective analysis in regional water resources allocation. The GDSS was designed as an adaptive system. The regional water distribution maps can be updated based on the changes in the real world by changing the map features and attributes; the network derived from the maps can be modified based on the user's interests and judgments by using updating tools; and the model can be updated by inserting new algorithms. The interface between the system and the users, and the interface between two softwares (ArcView and GAMS) integrate data, model, and users within the GDSS. In this paper, we focus on two technical points: using Avenue to create a GIS for users' specific requirements and making a general connection between a GIS and another software. Through these two points, we will show how we can use the GIS technique to improve regional water resources management and planning.
|
|
