Prof S. Siddiraju studied systematically hydrological potential of the Pulang river basin which fetched for him his doctoral degree for Sri Venkateswara University, Tirupathi. The thesis is being published in a book form. 

The scope of the study includes collecting relevant literature of geological, geomorphological and hydrological information. Then Prof.Raju has studied climate, water balance and Agriculture in the basin. Then he moved to ascertain water resources, ground water exploration, hydrochemistry and utilization of land and water resources. He devoted the last chapter (eighth) for summarizing his research work and findings