Sediment production susceptibility index in urban area: a case study of Campo Grande – MS, Brazil

Abstract

Inadequate urban planning has contributed to the sediment production in Urban Hydrographic Micro-basins (UHMs). The present study aims to develop and apply the Sediment Production Susceptibility Index (SPSI) in UHMs from Campo Grande – Mato Grosso do Sul (MS), Brazil, based on the Analysis Hierarchical Process (AHP) and Geographic Information System (GIS) aggregation. The indicators selected for the composition of the SPSI are Soil Class (49%), Average Slope (22%), Vegetation Cover (13%), and Unpaved Streets (16%). It is essentially to jointly analyze indicators from both spheres (natural and anthropogenic) to obtain greater reliability in studies related to sedimentation in urban areas. UHMs undergoing urbanization are more susceptible to sediment production than UHMs that are already densely occupied. SPSI can assist public managers in the urban and environmental planning and in the adoption of preventive measures against the silting of water bodies and obstruction of drainage systems.