MODELLING RAINFALL-RUNOFF PROCESS FOR SUB CATCHMENT OF NARMADA RIVER
BASIN AT HOSHANGABAD USING SEMI DISTRIBUTED MODEL HBV
Abstract
In this study, the light version of Hydrologiska Byrans
Vattenbalansavdelning hydrological model (HBV), has been used to
synthesize river discharge and daily flow series for twelve years in the
sub catchments of the Narmada river basin at Hoshangabad. The plain area
of Narmada river basin at Hoshangabad is used for this study,with a
drainage area of 10594 km2 and co-ordinates lies between 22°46’Nand
77°43’E.The model was run using twelve years data. Parametrization of
parameters were obtained after warming, calibration and validating the
results. There after the sensitivity analysis was done and acceptable
range for each parametrized parameter was obtained. The Coefficient of
Determination of observed and simulated discharge at the Hoshangabad was
found to be 0.84. In Narmada River Basin at Hoshangabad
hydrologicalmodeling using the HBV model, MAXBAS is the most sensitive
parameter. The sensitive parameters from high to low along with their
slopes values are Maxbas: 0.23, Alpha: 0.018, Fc: 0.012, K1:0.010, Beta:
0.008, K2: 0.005, Perc: 0.001 and Lp 0.001. The study shows that light
version of the HBV model can be used to model the runoff of the sub
catchment of the Narmada river basin at Hoshangabad.