meanwhile the hydrometeorological service indicates that in azerbaijan the trend is for an increase in winter river flows and a decrease in summer flows combined with a reduction of to per cent of yearly water availability the much larger precipitation and snow melting in the ranges controls the magnitude and seasonal variations of the rivers in the lowlands the map also depicts that a significant proportion of the surface water in azerbaijan is locally produced in fact some per cent or kmvy of the discharge of the kura river into the caspian sea comes from azerbaijani national rivers