GIS-based modeling of runoff source areas and pathways
نویسندگان
چکیده
منابع مشابه
Delineating runoff processes and critical runoff source areas in a pasture hillslope of the Ozark Highlands
The identification of runoff contributing areas would provide the ideal focal points for water quality monitoring and Best Management Practice (BMP) implementation. The objective of this study was to use a field-scale approach to delineate critical runoff source areas and to determine the runoff mechanisms in a pasture hillslope of the Ozark Highlands in the USA. Three adjacent hillslope plots ...
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Predicting runoff producing areas and their corresponding risks of generating storm runoff is important for developing watershed management strategies to mitigate non-point source pollution. However, few methods for making these predictions have been proposed, especially operational approaches that would be useful in areas where variable source area (VSA) hydrology dominates storm runoff. The o...
متن کاملModeling pollutant release from a surface source during rainfall runoff.
Though runoff from manure spread fields is recognized as an important mode of nonpoint-source pollution, there are no models that mechanistically describe transport from a field-spread manure-type source. A mechanistic, physically based model for pollutant release from a surface source, such as field-spread manure, was hypothesized, laboratory tested, and field-applied. The primary objective of...
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Riparian buffers have potential for reducing excess nutrient levels in surface water. Spatial variation in riparian buffer effectiveness is well recogrnzed, yet researchers and managers still lack effective general tools for understanding the relevance of different hydrologic settings. We present several terrain-based GIS models to predict spatial patterns of shallow, subsurface hydroiogic flux...
متن کاملModeling urban growth effects on surface runoff with the integration of remote sensing and GIS.
A methodology is developed to relate urban growth studies to distributed hydrological modeling using an integrated approach of remote sensing and GIS. This linkage is possible because both studies share land-use and land-cover data. Landsat Thematic Mapper data are utilized to detect urban land-cover changes. GIS analyses are then conducted to examine the changing spatial patterns of urban grow...
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ژورنال
عنوان ژورنال: Geographica Helvetica
سال: 2008
ISSN: 2194-8798
DOI: 10.5194/gh-63-48-2008