Water Resources Scientists and Engineers are always in the hunt to synthesize stream flow from ungauged catchments. The most popular approach is use of empirical relationships for determining parameters of conceptual models. However, such relationships do not remain accurate, as variations in global atmosphere may bring about changes in the rainfall patterns and geomorphology as well. Commonly used modelling approach is application of linear theories. Main problem with application of linear theories is determination of instantaneous unit hydrographs (IUH) for a basin. IUH, which is unit...