Designing an L-THIA Model for ArcGIS 10.2 Using Python 2.7

L-THIA (Long-Term Hydrologic Impact Analysis) is a mature model available as a spreadsheet, a web-based spatial model and as an add-in to the popular geographic information system (GIS) software system ArcGIS 10. The model generally has a method to determine an area of analysis such as a watershed, and then populates the watershed with data on soil and landuse. The model generally requires precipitation data for a long term and uses assumptions about the relationship between landuse, soil, and the chemistry of surface runoff passing across the various landscapes. Input data are landuse and soil map layers and long-term precipitatio

Designing an L-THIA Model for ArcGIS 10.2 Using Python 2.7

• L-THIA (Long-Term Hydrologic Impact Analysis) is a mature model available as a spreadsheet, a web-based spatial model and as an add-in to the popular geographic information system (GIS) software system ArcGIS 10. • The model generally has a method to determine an area of analysis such as a watershed, and then populates the watershed with data on soil and landuse. • The model generally requires precipitation data for a long term and uses assumptions about the relationship between landuse, soil, and the chemistry of surface runoff passing across the various landscapes. • Input data are landuse and soil map layers and long-term precipitatio