main aquifers of the Chrysochou Basin are: a) The Terra and
Koronia Limestones; b) The Gypsum; c) The Coastal Plain; and, d)
The limestones of Terra and Koronia are in vertical and
horizontal hydraulic connection and form a single aquifer, which
is locally important for domestic supply and irrigation. The
Terra and Koronia Limestones Aquifer is developed on either side
of Chrysochou basin between the villages of Kathikas and Neo
Chorio in the western highlands and Steni and Lysos in the
eastern highlands. The aquifer provides good quality water at
the sides of the valley, which are the recharge areas, but its
water becomes saline along the axis of the valley where the
limestone changes laterally into marls. The annual recharge of
the aquifer has been estimated at 3.3 million m3.
Several well-known springs flow out of this aquifer, including
those of the Baths of Aphrodite, Kritou Terra, Akourdalia and
The Gypsum Aquifer covers an area of 25 km²
and develops mainly between the villages of Polemi–Stroumpi–Theletra–Giolou.
Its thickness is about 45 m. Its water is suitable only
for irrigation because of high concentration of sulphate salts.
The Coastal Plain Aquifer stretches from Lachi in the west to
Nea Dimmata in the east. It has a length of 22 km, a width of
0.3–2 km and covers an area of 22 km².
It consists of gravels and sands with lenses of clayey silt of
Pleistocene age. Its average thickness is 10 m. Its average
annual replenishment is 6 million m3. Borehole yields
range from 10 to 25 m3/h. Its base of Pliocene marls
and pillow lavas is below sea level and over-pumping has caused
seawater intrusion in the Limni area.
d) The Alluvial Aquifer develops in the rivers of Chrysochou and Makounta. The Chrysochou River aquifer consists of gravels, sands and sandy silt with lenses of silt and clay and attains a significant thickness downstream of Skoulli village. Upstream of this point the river divides into two branches, the Klavaris, which drains from the Polemi area and its water is contaminated with sulphate salts, and the Stavros tis Psokas, which drains from the Diabase and has good quality water. The aquifer of the latter branch attains a thickness of 30 m and its water is suitable for domestic supply. The Makounta alluvial aquifer consists of gavels, boulders and sands. Its thickness ranges from 15 to 40 m and its water is suitable for domestic supply and irrigation.