HYDROMETEOROLGICAL ANALISIS OF DOJRAN LAKE



VIOLETA GJESOVSKA
 


ABSTRACT. – Dojran Lake with its hydrological basin is a closed hydrological system with natural inflow of water to the lake, but no natural outflow. Recharge of the lake is from direct surface and underground inflow. Within the period 1950-1960 the lake faced with extremely high water level that was not favorable for the development of fishing. It was built an artificial channel to regulate the water level in the lake and control the water use at Greek side of the lake. In the period 1988-2000, the water level in the lake continuously was declining. Water level declination caused ecological catastrophe for the flora and fauna in the lake and lake’s basin that was inconvenience for the basic economy in the region, tourism and fishing. The reasons for declining the water level in the lake are not clearly identified, and they are located in unfavorable hydrological conditions expressed through longer dried period or uncontrolled usage the water from the lake.
In 2002, the Republic of Macedonia finished a project to build a system for bringing water from Gjavato wells near Vardar River with capacity of 1 m3/s. The water level in the lake has recently increased. In order to define the causes of changes in the lake requires detailed hydrological and meteorological analysis. This paper will present the results of hydrological and meteorological analysis on the basis of historical data of measured water level, precipitation, and air temperature from hydrometeorological station New Dojran for the period 1961-2008. Some comments on impact factors will be presented as well.

Keywords: “hydrometeorology”, “Dojran Lake”, “precipitation”, “temperature”, “water level”

 

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