Computers & Geosciences - Special issue: environmental geology
A spatially distributed hydrologic model utilizing raster data structures
Computers & Geosciences
Foundations of Fuzzy Systems
A new approach to testing an integrated water systems model using qualitative scenarios
Environmental Modelling & Software
Geomorphometric landscape analysis using a semi-automated GIS-approach
Environmental Modelling & Software
Use of neurofuzzy networks to improve wastewater flow-rate forecasting
Environmental Modelling & Software
A new method for semi-automatic fuzzy training and its application in environmental modeling
Environmental Modelling & Software
A group agreement-based approach for decision making in environmental issues
Environmental Modelling & Software
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This paper introduces a fuzzy rule-based model to estimate runoff in a tropical watershed using the Soil Conservation Service Curve Number model. The data used were collected within a tropical watershed covered by Atlantic forest and pasture and involved map compilation, ASTER multispectral data processing and fieldwork. The computer models were developed using the PCRaster Environmental Modeling Language. Fuzzy theory allowed the mathematical modeling in zones of imprecision and/or uncertainties as fuzzy theory considers the transition zones among geo-objects. The evaluation of runoff derived from fuzzy and boolean methods demonstrated that the former provided calculated runoff closer to the measured runoff in the watershed, confirming the suitability of the fuzzy theory in modeling natural phenomena.