Base Waterbody Polygon Update is the Alberta Environment and Protected Areas base hydrography polygon dataset, it is an update of the Base Features Hydro Polygons in Central and Southern Alberta using aerial imagery, digital elevation models (DEM's) and various sources of provincial base data.

Base Hydrography Update is the Alberta Environment and Protected Areas base hydrography dataset, it is an updated of the Base Features Hydrography in Southern Alberta from orthophoto and various sources of provincial base data.