Table 7. Streams and lakes (Streams.shp, Lakes.shp).

Attributes	Type	Description
FID	Integer	Shapefile automatic identifier.
Shape	Geometry	Geometry of the object (line or polygon).
lakeId/streamId	String	Unique identifier of the lake or stream. Created by the authors.
obsDate	String	Date of observation (=date of the map from which the object was digitized) (usually only the year).
Name	String	Name of the object.
mapCode	String	Code of the historical map from which the object was digitized. From the Lantmäteriet historical map archive17.
mapName	String	Name of the historical map from which the object was digitized. From the Lantmäteriet historical map archive17.
mapSeries	String	Name of the map series from which the object was digitized.
subType	String	Type of lake/stream.
noteStream/noteLake	String	Note about the stream/lake.
Shape_Leng	Float	Length of the stream segment/circumference of the lake polygon (in meters).
Shape_Area	Float	Area of the lake polygon (in square meters) (only for Lake.shp).