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Title: RELIABILITY OF THE RESERVOIRS AT THE REGION OF THE FORMER LAKE KARLA IN THESSALY IN MEETING CROP WATER REQUIREMENTS

Author: S. Kotsopoulos, I. Alexiou, P. Lokkas, D. Kalfountzos, G. Gravanis and S. Magalios

Year: 2009

Publisher: European Water Resources Association (EWRA)

Description:

For the time being, twelve surface reservoirs operate in the area of the former lake Karla in order to supply the sufficient water quantities for irrigation of the nearby cultivated areas mainly during the period June – August when the irrigation water requirements are high while the available water from other resources is negligible. In the present study, monthly climatic data for a period of 43 years (1953-1997), from the meteorological station of the National Meteorological Service (N.M.S.) in Larissa are utilised for the estimation of reservoir evaporation and the crop water requirements in order to evaluate the efficiency of reservoirs in meeting crop water requirements with reference to their technical characteristics and the size of the irrigated areas. The analysis exemplifies that the reliability among the various reservoirs of the study area is not the same. Reservoirs usually do not cover the total crop water requirements of the areas they serve. On average, they cover only part of them (48 – 83%), depending on their characteristics and the cropping pattern of the sub-area they serve.