Carneros Watershed: Map of Soil Type
From CCoWS Wiki
Metadata
- Original source of data: SSURGO
- Data analysis by: Natalie
- Map produced by: Natalie
- Map produced using: ArcMap
- Coordinate system: Longitude Latitude
- Datum: GCS North American Datum 1983
Some notes on steps taken / or could be taken
- Download SSURGO data for each of the four counties on the map from one of the Useful Data Sources
- Create a shapefile representing the extent of the map (one way):
- Data Frame Properties --> write down the coordinates of the view extent
- ArcCatalog --> Create a new shapefile (polygon)
- Edit the shapefile in ArcMap; draw a rough box; then right-click on the points to manually enter the XY extent coords that were written down previously
- In the steps below, work with the 'MUSYM' shapefiles
- Clip each county's SSURGO data to the map rectangle just created:
- Analysis tools --> Extract --> Clip
- Merge the four clipped county MUSYM shapefiles into one shapefile:
- Data management tools --> General --> Merge
- Add this clipped-merged shapefile to your view, and define symbology with a different color for each category of MUSYM
- Note, different counties appear to have used different codes for the same soil types, so there will be mis-matches at county boundaries
- Use the identify tool to make a list of just the soil types inside the watershed boundary
- Do some kind of 'select' operation to create a shapefile or layer-file with the soil types that are inside the watershed boundary
- Add a legend for this inside-watershed layer, and add an annotation noting that the legend does not contain soil types that are outside the watershed
Alternate versions
- None
