Data analysis and modeling within the infrastructure of geographic information systems (GIS) applications are invaluable assets with respect to groundwater resource management and protection. In Florida, ground water comprises more than 90% of potable water resources, which are used by a population of more than 16 million. With an increase of more than 7000 residents per week, demands on Florid...

Floods have become more severe and frequent as a result of climate change around the world, posing hazard to public safety economic development. This study investigates use distributed hydrological models in flash flood risk management small watershed Hazara, Pakistan, with goal improving Pakistan's early warning lead time. First, HEC-HMS model was built using geographic data river network's st...

Simple algebraic change detection techniques viz. image difference and ratio were applied to the South African national land use / cover (NLC) datasets of years 2000 2014, prepared in grid format covering Klerksdorp–Orkney–Stilfontein–Hartebeestfontein (KOSH) region order assess use/land changes. Both 2014 NLC generated from Landsat images using different classification schemes code values &amp...

Figure 4. Example of a well pad & road network w/a high-pass filter over ETM imagery. The Southern Wind River Landscape (SWRL) is a three million acre area of Intermountain Semidesert in west central Wyoming. Within the three million acres lie both public and private land holdings. The Nature Conservancy (TNC) has significant conservation interests in this Landscape as well and has created a ne...

The GIS-based model ProLand simulates the spatial distribution of agricultural and forestal land use systems. It is integrated into the GIS software ArcView as Visual Basic for Applications module. Relational Microsoft Access databases store information on natural site conditions, technology and socioeconomic attributes. ProLand calculates the site-specific land rent and generates a vector map ...

This paper introduces AVSWAT, a GIS based hydrological system linking the Soil and Water Assessment Tool (SWAT) water quality model and ArcView  Geographic Information System software. The main purpose of AVSWAT is the combined assessment of nonpoint and point pollution loading at the watershed scale. The GIS component of the system, in addition to the traditional functions of data acquisition...

Geographic information system (GIS) has had a great progress in river engineering in recent years. Most of new developed softwares in this area have the GIS abilities or are able to interact with GIS software. The application of GIS in this area is mostly for pre and post processing of input and output data. In this research, water flow of river has been estimated in an ungaged point using ArcV...