List of ancient watermills

Columns: Site | Country | Date | Identification/Remains
Mouzaïa des Mines , near | Algeria | Unspecified | Unspecified remains | Oued Bou Ardoun | Algeria | Possibly 2nd to 3rd century AD | Unspecified remains | Oued Bou Ya'koub | Algeria | Unspecified | Drop-tower mill | Oued Mellah | Algeria | Possibly 4th century AD | Drop-tower mill | Ardleigh , Spring Valley Mill | England | Unspecified | Possible Roman watermill site including millstones | Chesters | England | Possibly 3rd century AD | Mill-race , mill-chamber , tail-race , millstones | Fullerton | England | Unspecified | Two watermills

Example questions:
What is the Identification/Remains of the watermill that has evidence of Roman metalwork and copper brooches ? | What is the Identification/Remains of the watermill that lies west to the River Test , just off the A3057 road ? | What is the Identification/Remains of the watermill that drains an area of approximately 42 km2 ? | What is the Identification/Remains of the watermill that is considered to be the best preserved Roman cavalry fort along Hadrian 's Wall ?

Answers:
Mill-race , mill-building , fragments of millstones | Two watermills | Entire establishment | Mill-race , mill-chamber , tail-race , millstones