ANALYSIS OF FLUCTUATIONS IN THE STREAM WATER LEVEL DURING THE DRY SEASON IN FORESTED AREAS

This is a description of temporal variation and development of stream flow in the open landscape, in the long-term summer droughts. The water level was scanned continuously several times a minute for several consecutive years. The analysis shows that the water discharge in the stream can be clearly divided into two components, a tributary to surface water and groundwater. While the surface component has a clear daily period, a component of groundwater is declining continuously, almost linearly. In the stream surface component adds to the total water discharge a gradual effect mini-peak levels at sunset and a sharp decline at sunrise. Time of culmination and its overall size with the ongoing drought days is developing. The peak always comes later and is still less pronounced