ArcMap Tool for Pre-processing SSURGO Soil Database for ArcSWAT
نویسنده
چکیده
The Soil Survey Geographic (SSURGO) database provides the highest resolution for a county-wide soil database in the United States. AvSWAT and ArcSWAT are developed for using soil input prepared in a format of the State Soil and Geographic (STATSGO) database. The available SSURGO processing extension tool currently works only with AvSWAT but not with ArcSWAT. The purpose of this study is to develop an extension tool for ArcMap GIS that is capable of processing the SSURGO soils into a modified STATSGO format that is readable by ArcSWAT. This process consists of the following steps: preparing a SSURGO soil dataset in a format compatible with ArcSWAT, appending it to a user soil dataset, building a watershed specific soil lookup table, and creation of a soil GIS layer for SWAT input. All these steps are automated and incorporated in a user-friendly interface programmed as an Extension to ArcMap GIS. A comparison of using STATSGO versus SSURGO soil input datasets to the SWAT model was conducted on a Black Kettle Creek Watershed in South-Central Kansas.
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