Tamassos Dam

Tamassos Dam is a small aquifer-recharge dam on the northern flank of the Troodos mountains in Cyprus, impounding the upper reaches of the Pedieos — at around 100 kilometres the longest river on the island, famously diverted around Nicosia by the Venetians in 1576. Completed in 2002, it is a 34-metre hybrid embankment, combining earthfill where a watertight core is needed with rockfill where strength and drainage matter, and it holds about 2.8 million cubic metres of water. The dam takes its name from the ancient city-kingdom of Tamassos, a centre of copper mining in antiquity, whose remains lie nearby.

Unlike the island's big supply reservoirs, Tamassos was never meant to feed taps directly. It belongs to a trio of recharge dams — with Klirou-Malounta and Solea — built this century to replenish the aquifers north of Troodos that serve the wider Nicosia area. By holding back winter runoff and releasing it gradually, the dam lets water soak into the ground rather than rush to the sea, effectively banking it underground where evaporation cannot reach it. On an island that loses close to two metres of open-water depth to the sky each year, storing water in an aquifer is often the smarter vault.

Among the 21 dams tracked on Fragmata, Tamassos is one of the youngest and smallest — but in a wet year its modest basin fills quickly, and its releases quietly sustain wells and boreholes far downstream.