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ServiceSpatial Modeling

Overview

Characterizing the potential exposure of non-target organisms (plants, invertebrates and mammals), groundwater and surface water to agrochemicals at the landscape level is increasingly important in the risk assessment process for pesticides and other contaminants. Using GIS, Waterborne combines land use, soils, climate and use patterns to characterize the use environment.  When combined with models, we can predict acute and  chronic concentrations across the landscape.

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GIS

Geographic Information Systems (GIS) have long been used in combination with specialized models to simulate the fate and transport of agrochemicals in watersheds. Waterborne uses GIS in combination with models such as SWAT, PRZM, RIVWQ and RICEWQ to compute estimated environmental concentrations in watersheds. Our staff uses their years of experience to conduct spatial and temporal exposure characterizations worldwide.

When combined with these models, GIS is used as a post-processor to:

  • Model watershed combine distributed datasets
  • Determine the unique combinations of land use, crops, soils, weather, and catchments
  • Determine catchment land use characteristics for riverine modeling
  • Create input files for PRZM, RIVWQ or RICEWQ

Using GIS in conjunction with models can help you answer many questions, including:

  • To what extent and magnitude do agriculture and aquatic systems interact?
  • How frequently will concentrations exceed levels of concern?
  • How much diversity in land cover is present within the region of interest?
  • What percentage of agriculture within the study site potentially exposes non-target areas?
  • How often does agriculture occur directly adjacent to critical habitat?
  • How often are water bodies protected by naturally occurring vegetation?
  • How do soil characteristics affecting chemical transport vary across the study area?