The two-letter abbreviations SR and SB both refer to the Sacramento River basin. Sub-Region codes and names are also provided. Note that some state designations map to more than one federal designation. Complete overlap statistics are left for calculation by the user. The individual polygons of a multi-polygon watershed all have the same watershed code.
Attribute completeness is good.
Compatibility with existing state and federal watershed delineations is good, except where explicitly different boundary configurations are applied.