Water Towers appear as circular elevated features. This is evident by the shadow signature.
Water Tanks/Water Towers are typically found in residential/urban areas, unlike Storage Tanks which are typically found in industrial/commercial areas.
Water Tanks/Water Towers tend to be solitary, unlike Storage Tanks that are typically concentrated in one area.
Regional Considerations:
Figure: 2.4.2.1 Representation of a Water Tower in association with surrounding features.