Recession curves of yearly stream flow hydrographs are analyzed by a
probabilistic approach suggested by (Akosy, H. & Bayazit M, (2001)) and
development of a spatial program with advanced language programming
(Visual Basic 6) compatible with Micro
soft excel for this purpose. Flow of a
month on a recession curve is calculated by multiplying the previous
month's flow with a value of K smaller than one; K, defined as the ratio of
the flows of successive months on the recession curve, was determined from
observed monthly flow time series.