The use of computer-aided analysis techniques (CAAT) and multispectral scanner data from aircraft and satellite altitudes has shown considerable promise for water resources applications. Two areas of particular interest are: (1) temperature mapping of surface water to study the environmental impact of thermal effluents and (2) snow-cover mapping in mountainous regions to improve water yield predictions. The conventional LARSYS classifier has proven to be inadequate for these purposes. Therefore, a layered classification approach was utilized to overcome the limitations of the conventional LARSYS classifier.
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