Today, remote sensing technology is used in all scientific and informing fields around the world, and it has achieved to very satisfying results. In the present study, by using remote sensing technology and application of satellite photographs the coefficient of curve number was estimated with high accuracy and pick discharge of the flood was calculated with a good accuracy. In this study, i...

The aim of this study is to determine runoff depth of the Van Lake basin by using remote sensing and geographic information system (GIS) integration. While determining the results we used various data sets such as Landsat satellite image, 1:25000 standard topographic map, and soil map data. Standard 1:25000 topographic maps were used to derive digital elevation model. Sub-basin area and physica...

The use of geographic information systems (GISs) and remote sensing to facilitate the estimation of runoff from watershed and agricultural fields has gained increasing attention in recent years. This is mainly due to the fact that rainfall-runoff models include both spatial and geomorphologic variations. The US Department of Agriculture, Natural Resources Conservation Service Curve Number (USDA...

Application of excess nutrients such as fertilizers is a significant and sometimes even major component of ground water pollution. Diffuse inputs of nutrients and contaminants to the ground water are related to runoff generated from precipitation in a catchment. Catchment’s response depends on site conditions and its physical properties. This implies that the analysis of diffuse fluxes from the...

the environmental problems, in different dimensions, are resulted from the lack of environmental considerations and criteria in locating new cities. the main purpose of this article is to compare different criteria based on library studies and expert opinions and determining suitable criteria in order to evaluate the environmental potential to establish new cities to achieve urban permanent dev...

Accurate estimation of spatial and temporal distribution of the water resources parameters is a crucial for hydrologic models. During the last decades, engineers and planners have shown keen interest in applying Geographic Information Systems (GIS) and satellite based Remote Sensing (RS) technologies to extract land surface parameters, which acted as a threshold in early days, to obtain reasona...

Emerging technologies of remote sensing and GIS were integrated to estimate runoff for watershed basins in China Taipei and Florida. Two basins were selected in each region, with each pair representing a static and a developing case. Remotely sensed images from the Landsat 4, 5, and 7 satellites were used to develop land cover maps of the study areas for the years 1990, 1995, and 2000. GIS anal...

Temperature, humidity and precipitation in an area, are parameters proved influential in the climate of that area, and one should recognize them so that he can determine the climate of that area. Climate changes are of primary importance in climatology, and in recent years, have been of great concern to researchers and even politicians and organizations, for they can play an important role in s...