water Review Challenges and Opportunities for Sustainable Management of Water Resources in the Island of Crete, Greece V. A. Tzanakakis 1,2,*, A. N. Angelakis 3,4 , N. V. Paranychianakis 5, Y. G. Dialynas 6 and G. Tchobanoglous 7 1 Hellenic Agricultural Organization Demeter (HAO-Demeter), Soil and Water Resources Institute, 57001 Thessaloniki, Greece 2 Department of Agriculture, School of Agricultural Science, Hellenic Mediterranean University, Iraklion, 71410 Crete, Greece 3 HAO-Demeter, Agricultural Research Institution of Crete, 71300 Iraklion, Greece 4 Union of Water Supply and Sewerage Enterprises, 41222 Larissa, Greece;
[email protected] 5 School of Environmental Engineering, Technical University of Crete, 73100 Chania, Greece;
[email protected] 6 Department of Civil and Environmental Engineering, University of Cyprus, Nicosia 1678, Cyprus;
[email protected] 7 Department of Civil and Environmental Engineering, University of Davis, Davis, CA 95616, USA;
[email protected] * Correspondence:
[email protected] Received: 12 April 2020; Accepted: 16 May 2020; Published: 28 May 2020 Abstract: Crete, located in the South Mediterranean Sea, is characterized by long coastal areas, varied terrain relief and geology, and great spatial and inter-annual variations in precipitation. Under average meteorological conditions, the island is water-sufficient (969 mm precipitation; theoretical water potential 3284 hm3; and total water use 610 hm3). Agriculture is by far the greatest user of water (78% of total water use), followed by domestic use (21%). Despite the high average water availability, water scarcity events commonly occur, particularly in the eastern-south part of the island, driven by local climatic conditions and seasonal or geographical mismatches between water availability and demand.