Runoff estimation is very important aspect in hydrological field and for reservoir analysis. To measure runoff various technique are available, but in case of ungauged basins synthetic unit hydrograph method has been used since last five decades. The outputs from these conventional methods are not efficient, so there is need for alternate methods. Soil and Water Assessment Tool (SWAT) and Geomorphological Instantaneous unit hydrograph (GIUH) are the advance tools have been developed and these tools are capable to measure the runoff for ungauged basins. So, the aim of this work is to measure runoff for ungauged basin in Kolhapur district with these tools. The methodology was used to achieve the said objective, SWAT and GIUH models were developed and performance of model was compared. To process the models, the meteorological data is used from (2000-2020). The Sequential Uncertainties Fittings-2 algorithm in SWAT-CUP was worn out to calibrate and validate the models. The result shows that, the statistical parameters NSE (0.80) and R2 (0.84) indicates the acceptance of model. The study concludes that, the SWAT model is helpful for continuous scale and GIUH tool for events based activities. The results obtained from GIUH are better than SWAT model.

-SWAT, GIUH, Ungauged basin, Runoff, Kolhapur