Cyprus packs more dams into its hillsides than almost anywhere in Europe — 108 of them, holding a sunken church, a bird sanctuary, and a few engineering stories worth knowing. Here's how to read a dam wall, and why the type of wall tells you how the dam behaves.
Cyprus is a small island with a big dam habit. With 108 dams and reservoirs squeezed into 9,251 km², it holds the highest density of dams per unit area of any country in Europe — a distinction born of necessity on an island with one of the lowest per-capita water availabilities in the EU. Together they can store roughly 330 million cubic metres of water, though in the current drought they sit far below that.
Fragmata tracks the 21 largest of these. This article is a field guide to them — not the water levels this time, but the walls themselves: how they're built, why it matters, and the stories hiding behind the concrete and clay. Open any dam page on Fragmata and you'll now see a Dam facts strip showing its build year, height, river, and type. This is what those facts actually mean.
How to read a dam wall: the three kinds
Almost every Cyprus dam is an embankment dam — a giant, carefully engineered pile of earth or rock, not a wall of concrete. Embankment dams are cheaper, they flex with ground movement instead of cracking, and they suit Cyprus's geology. But not all embankments are the same, and the "Type" field on each dam page tells you which recipe was used.
Earthfill. More than half the volume is compacted soil, built up in thin, intensively rolled layers at a controlled moisture content. At the heart sits a core of low-permeability clay that stops water seeping through, wrapped in filter and shell zones that get coarser toward the outside. Earthfill dams are the workhorses — Kouris, Germasoyeia, Polemidia and Klirou-Malounta are all earthfill. Their weakness is water itself: uncontrolled seepage or overtopping can erode the embankment from within.
Rockfill. Here more than half the fill is coarse, dumped-and-compacted rock. Rock is frictional — the fragments lock together and give the dam high shear strength — and it drains freely, which virtually eliminates the pore-water-pressure problems that plague earthfill. Because the rock itself doesn't hold water back, a rockfill dam needs a separate sealing element: an impervious clay core, or a concrete or asphalt face on the upstream side. Asprokremmos, Kannaviou, Evretou and Solea are rockfill.
Hybrid (earthfill/rockfill). Several Cyprus dams — Lefkara, Arminou, Tamassos — are zoned combinations, using earth where a watertight core is needed and rock where strength and drainage matter. It's the pragmatic middle ground, and it's why the WDD's own records list them as a distinct type.
For contrast, the dams you don't see much of in Cyprus are the concrete gravity dams (which hold back water by sheer weight), arch dams, and buttress dams. Concrete is stronger and needs less bulk, but it's far more expensive and demands sound rock foundations — a luxury Cyprus's terrain rarely offers cheaply.
Kouris: the giant with a village beneath it
Kouris115.000 mln. m³
If Cyprus has a flagship dam, it's Kouris. Completed in 1988, its clay-core zoned earthfill embankment rises 110 metres — the tallest dam on the island — with a crest stretching about 550 metres. At 115 million cubic metres it is the largest reservoir in Cyprus by a wide margin, holding roughly 35% of the entire island's dam capacity on its own. It gathers the Kouris, Limnatis and Kryos rivers, and is topped up by water diverted from the Diarizos river through a 14.5 km tunnel that runs via Arminou dam — which is exactly why Fragmata shows a continuous Arminou→Kouris transfer.
Building it meant drowning the old village of Alassa, whose residents were relocated at a cost of around CY£5 million. The village's early-20th-century Church of St Nicholas went under with it — and in dry summers, as the reservoir shrinks, the church tower rises back above the water, a haunting drought-gauge you can see from the shore. (In 2008 the reservoir briefly acquired a "Cyprus Loch Ness Monster" legend when rumours of a crocodile prompted an official — and fruitless — search.)
Asprokremmos: the bird sanctuary that rarely spills
Asprokremmos52.375 mln. m³
Cyprus's second-largest reservoir sits on the Xeros river east of Paphos, a 53-metre earthfill dam completed in 1982 with a capacity near 52 million m³. Beside it lies the abandoned village of Finikas, and the reservoir has become an important wetland for endemic and migratory birds. Because Paphos rainfall is stingy, Asprokremmos overflowing is a genuine event: after spilling in 2004 it stayed below the crest for eight years, then overflowed in 2012, 2019 and 2020. Watch its heatmap and you can see the drought-and-deluge rhythm of Cyprus hydrology written across the decades.
Germasoyeia: the dam that gives its water away
Not every dam is built to hoard water. Germasoyeia — a 49-metre earthfill dam from 1968, one of the oldest on Fragmata — is a key node in an artificial groundwater recharge scheme. It deliberately releases water down the riverbed so it can soak into the alluvial aquifer below, from which communities then pump their supply. The dam doesn't just store water; it re-banks it underground, where evaporation can't reach it — a clever answer to an island that loses close to two metres of open-water depth to the sky every year.
The small dams north of Troodos
Fragmata's "Recharge/Other" group — Tamassos (2002), Klirou-Malounta (2007) and Solea (2013) — are the youngest dams on the site, all built this century on the northern flanks of the Troodos to recharge the Nicosia-area aquifers rather than to supply taps directly. They're small, but they punch above their weight in a good year: this spring, all of them filled to overflowing for the first time in years.
Every dam has a story
The three profiled above are the famous ones, but all 21 dams on Fragmata carry something worth knowing:
Southern Conveyor. Kalavasos (rockfill, 1985) gets barely a fifth of its capacity from its own catchment and leans on Conveyor transfers, yet has still overflowed four times since 2004. Lefkara (hybrid, 1973) was designed by Italy's Studio Pietrangeli to supply Famagusta, then re-pointed to Larnaca after 1974; it sits near the lace-making village of Pano Lefkara. Dipotamos (rockfill, 1986) takes its name — "two rivers" — from the confluence it sits on, irrigating some 2,800 plots. Arminou (hybrid, 1998) barely stores water for itself — it exists mainly to divert the Diarizos into Kouris through that 14.5 km tunnel. Polemidia (earthfill, 1965) is wrapped in a 46-hectare forest park created to guard its watershed as Limassol sprawled uphill. And Achna (earthfill, 1987) is an off-river reservoir with no river of its own — filled entirely from the Conveyor — that has been a Natura 2000 bird sanctuary since 2008.
Paphos. Kannaviou (rockfill, 2005) was Cyprus's first concrete-face rockfill dam, and at 75 m one of its tallest. Mavrokolympos (earthfill, 1966) was built to water banana plantations — and made headlines in January 2025 when a corroded vent leaked ~5 m³/s and forced a full drain.
Chrysochou. Evretou (rockfill, 1986) is the largest rockfill dam on the island; an abandoned Turkish-Cypriot village, mosque still standing, lies partly submerged on its banks. Argaka (1964) and Pomos (1966) are among the oldest of the modern dams — small 1960s rockfill embankments that today double as fishing and picnic spots. Tiny Agia Marina (1965, just 0.3 MCM) overflowed in March 2026.
Nicosia. Xyliatos (rockfill, 1982) anchors one of Cyprus's best-loved picnic and nature sites, ringed by a perimeter trail inside a Natura 2000 area. Kalopanagiotis (earthfill, 1966) sits just below a UNESCO-listed monastery and a sulphur-spring spa village, with a trout farm running on its outflow. Vyzakia (earthfill, 1994) is one of only three dams feeding the Nicosia district — and fell to about 0.8% full in mid-2025.
Recharge/Other. Tamassos (hybrid, 2002) sits on the Pedieos, the longest river in Cyprus (100 km, famously diverted around Nicosia by the Venetians in 1576) and is named for an ancient copper-kingdom. Solea (rockfill, 2013) impounds the Karkotis — the island's only permanently flowing river, kept alive through summer by a porous gabbro aquifer. Klirou-Malounta (earthfill, 2007) quietly recharges the Akaki valley aquifer between the two villages it's named for.
Old bones: why the "built" year matters
That build-year field isn't trivia. Many Cyprus dams have now passed 50 years of service, and age brings risk. In January 2025 the 1966-vintage Mavrokolympos dam suffered a corroded outlet vent that leaked at roughly 5 cubic metres per second, forcing engineers to drain it entirely. A 2025 Audit Office review warned that most large Cyprus dams lack a modern safety-management system and independent inspection. An embankment dam is only as trustworthy as its maintenance — which makes knowing each dam's age, type and history more than idle curiosity.
Read the walls, not just the water
Next time you check a level on Fragmata, glance at the Dam facts strip too. A 110-metre clay-cored giant from 1988 and a 34-metre hybrid recharge dam from 2002 respond to the same rainfall in completely different ways — and knowing why turns a row of percentages into a story about engineering, geology, and a country that learned to hold onto every drop.
Explore the full map of Cyprus dams or dive into any individual dam page to see its facts, history and forecast.