The watermill is the earliest instance of a machine harnessing natural forces to replace human muscular labour (apart from the sail).[3] As such, it holds a special place in the history of technology and also in economic studies where it is associated with growth.[4]
The initial invention of the watermill appears to have occurred in the hellenized eastern Mediterranean in the wake of the conquests of Alexander the Great and the rise of Hellenistic science and technology.[5] In the subsequent Roman era, the use of water-power was diversified and different types of watermills were introduced. These include all three variants of the vertical water wheel as well as the horizontal water wheel.[6] Apart from its main use in grinding flour, water-power was also applied to pounding grain,[7] crushing ore,[8] sawing stones[9] and possibly fulling and bellows for iron furnaces.[10]
An increased research interest has greatly improved our knowledge of Roman watermill sites in recent years. Numerous archaeological finds in the western half of the empire now complement the surviving documentary material from the eastern provinces; they demonstrate that the breakthrough of watermill technology occurred as early as the 1st century AD and was not delayed until the onset of the Middle Ages as previously thought.[11] The data shows a wide spread of grain-mills over most parts of the empire, with industrial mills also being in evidence in both halves.[12] Although the prevalence of grain-mills naturally meant that watermilling remained a typically rural phenomenon, it also rose in importance in the urban environment.[13]
The data below spans the period until ca. 500 AD. The vast majority dates to Roman times.
Earliest evidence
Below the earliest ancient evidence for different types of watermills and the use of water-power for various industrial processes. This list is continued for the early Middle Ages here.
The following list comprises stray finds of ancient millstones. Note that there is no way to distinguish millstones driven by water-power from those powered by animals turning a capstan. Most, however, are assumed to derive from watermills.[97]
Although more rare than the massive millstones, finds of wooden and iron parts of the mill machinery can also point to the existence of ancient watermills.[102] Large stone mortars have been found at many mines; their deformations suggest automated crushing mills worked by water wheels.[103]
^Character as watermill disputed (Wilson 1995, p. 375)
Sources
Watermill lists which summarize the rapidly developing state of research are provided by Wikander 1985 and Brun 2006, with additions by Wilson 1995 and 2002. Spain 2008 undertakes a technical analysis of around thirty known ancient mill sites.
Ad, Uzi; Saʿid, ʿAbd al-Salam; Frankel, Rafael (2005), "Water-mills with Pompeian-type Millstones at Nahal Tanninim", Israel Exploration Journal, vol. 55, no. 2, pp. 156–171
Amouric, Henri; Thernot, Robert; Vacca-Goutouli, Mireille; Bruneton, Hélène (2000), "Un moulin à turbine de la fin de l'Antiquité. La Calade du Castellet (Fontvieille)", in Leveau, Philippe; Saquet, J. P. (eds.), Milieu et sociétés dans la Vallée des Baux. Études présentées au colloque de Mouriès, Revue Archéologique de Narbonnaise (Supplement), vol. 31, Montpellier: Association de la Revue Archéologique de Narbonnaise, pp. 261–274, ISBN978-2-84269-369-5
Brun, Jean-Pierre (2006), "L'energie hydraulique durant l'Empire romain: quel impact sur l'economie agricole?", in Lo Cascio, Elio (ed.), Innovazione tecnica e progresso economico nel mondo romano: atti degli Incontri capresi di storia dell'economia antica (Capri 13-16 Aprile 2003), Bari: Edipuglia, pp. 101–130, ISBN978-88-7228-405-6
Burnham, Barry C. (1997), "Roman Mining at Dolaucothi: The Implications of the 1991–3 Excavations near the Carreg Pumsaint", Britannia, vol. 28, pp. 325–336, doi:10.2307/526771
Czysz, Wolfgang (1994), "Eine bajuwarische Wassermühle im Paartal bei Dasing", Antike Welt, vol. 25, no. 2, pp. 152–154
Donners, K.; Waelkens, M.; Deckers, J. (2002), "Water Mills in the Area of Sagalassos: A Disappearing Ancient Technology", Anatolian Studies, vol. 52, pp. 1–17, doi:10.2307/3643076, JSTOR3643076
Geilenbrügge, Udo; Schürmann, Wilhelm (2010), "Die älteste Wassermühle Mitteleuropas im Indetal bei Altdorf?", in Kunow, Jürgen (ed.), Archäologie im Rheinland 2009, Archäologie im Rheinland, Stuttgart: Theiss, pp. 62–64, ISBN978-3-8062-2383-5
Greene, Kevin (2000), "Technological Innovation and Economic Progress in the Ancient World: M.I. Finley Re-Considered", The Economic History Review, vol. 53, no. 1, pp. 29–59, doi:10.1111/1468-0289.00151, hdl:10.1111/1468-0289.00151
Spain, Robert (1984), "Romano-British Watermills", Archaeologia Cantiana, vol. 100, Kent Archaeological Society, pp. 101–128
Spain, Robert (1984b), "The Second-Century Romano-British watermill at Ickham, Kent", History of Technology, vol. 9, pp. 143–180
Spain, Robert (2008), The Power and Performance of Roman Water-mills. Hydro-mechanical Analysis of Vertical-wheeled Water-mills, British Archaeological Reports. International Series, vol. 1786, Oxford: Archaeopress, ISBN978-1-4073-0217-1
Wikander, Örjan (1985), "Archaeological Evidence for Early Water-Mills. An Interim Report", History of Technology, vol. 10, pp. 151–179
Wikander, Örjan (2000a), "The Water-Mill", in Wikander, Örjan (ed.), Handbook of Ancient Water Technology, Technology and Change in History, vol. 2, Leiden: Brill, pp. 371–400, ISBN90-04-11123-9
Wikander, Örjan (2000b), "Industrial Applications of Water-Power", in Wikander, Örjan (ed.), Handbook of Ancient Water Technology, Technology and Change in History, vol. 2, Leiden: Brill, pp. 401–410, ISBN90-04-11123-9
Wikander, Örjan (2014), "Early Water-mills East of the Rhine", in Karlsson, Lars; Carlsson, Susanne; Kullberg, Jesper (eds.), ΛΑΒΡΥΣ. Studies presented to Pontus Hellström, Boreas. Uppsala Studies in Ancient Mediterranean and Near Eastern Civilizations, vol. 35, Uppsala: Uppsala Universitet, pp. 205–219, ISBN978-91-554-8831-4
Wilson, Andrew (1995), "Water-Power in North Africa and the Development of the Horizontal Water-Wheel", Journal of Roman Archaeology, vol. 8, pp. 499–510
Wilson, Andrew (2020), "Roman Water-Power. Chronological Trends and Geographical Spread", in Erdkamp, Paul; Verboven, Koenraad; Zuiderhoek, Arjan (eds.), Capital, Investment, and Innovation in the Roman World, Oxford University Press, pp. 147–194, ISBN978-0-19-884184-5