In the past, to derive the unit hydrograph (UH) various distribution functions have been utilized so far, though they had their own limitations. In this study, the applicability of two-parameter beta distribution has been explored for the derivation of UH. The parameters of the distribution function were estimated using the Genetic Algorithm which facilitates the minimization of global error. The suitability of the derived UH resulting from the two-parameter beta distribution was verified by comparing the UH derived by the two-parameter gamma distribution. The results obtained from both the distributions were almost similar and close to the observed UHs, which confirmed the applicability of the two-parameter beta distribution as an alternate approach for the derivation of the UH.
Skip Nav Destination
Article navigation
Research Article|
June 01 2008
Adequacy of two-parameter beta distribution for deriving the unit hydrograph
R. K. Rai;
1State Water Resources Agency, Department of Irrigation, Ground Floor WALMI Bhawan, Utrethia 226 026, Lucknow, Uttar Pradesh, India
E-mail: [email protected]
Search for other works by this author on:
S. Sarkar;
S. Sarkar
2Department of Hydrology, Indian Institute of Technology Roorkee, Roorkee 247 667, Uttarakhand, India
Search for other works by this author on:
H. G. Gundekar
H. G. Gundekar
2Department of Hydrology, Indian Institute of Technology Roorkee, Roorkee 247 667, Uttarakhand, India
Search for other works by this author on:
Hydrology Research (2008) 39 (3): 201–208.
Article history
Received:
July 03 2007
Accepted:
November 01 2007
Citation
R. K. Rai, S. Sarkar, H. G. Gundekar; Adequacy of two-parameter beta distribution for deriving the unit hydrograph. Hydrology Research 1 June 2008; 39 (3): 201–208. doi: https://doi.org/10.2166/nh.2008.038
Download citation file: