Abstract:
The role of runoff is one of the basic hydrologic data and plays an important role in design aspect of Hydrolocry and reservoir operation studies in all water resources systems. In several water resources projects it is required to predict the characteristics and quantity of stream f'iQvu sequences. iliany existing irrigation projects. had been designed on the basis of scanty hydrologic data. Even some of the incoming projects are also being
designed with available hydrological data.
Kalluvodduhalla project in Karnataka State is a tank Irrigation project, proposed for construction under
World Bank Aid Scheme. The project is proposed across Kalluvodduhalla and no stream gauging data were available at the time of finalisation of t`ze project. The project authorities finalised the hydrology of the project based on the available rainfall data of the catchment rainfall and the adjacent catchment rainfall. Thirty years catchment rainfall was calculated and the yield of runoff was worked out based on Strange's Table. The project was designed for 50/ dependability of the flows , and was tested by 5 years contintous working Tables.
At present throe years historical river flow data is now available at the site.
