EVALUATION OF THE HYDROLOGICAL MODELLING USING CLIMATIC STATION DATA: (A CASE STUDY OF SAROBI SMALL DAM)
| Author(s) | : | Wisal Khan, Asif Khan, Zafar Ullah Khan, M.Ishfaq |
| Institution | : | Department of Civil Engineering, UET Pehsawar (Bannu Campus) |
| Published In | : | Vol. 6, Issue 5 — May 2019 |
| Page No. | : | 48-52 |
| Domain | : | Engineering |
| Type | : | Research Paper |
| ISSN (Online) | : | 2348-4470 |
| ISSN (Print) | : | 2348-6406 |
In this paper an effort has been made to carry out the hydrological modelling using the available rainfalldata. Hydrology plays the key role in the design of any hydraulic structure. If the discharge data is available for acertain place, then the frequency analysis is carried out using this discharge data. However if the discharge data ismissing then the peak design flood is estimated from the rainfall data. Sarobi Small Dam located at North WaziristanKP, Pakistan was selected as the case study and the SCS-Curve number method was used to estimate the direct runoffbecause this model is simple and many researchers prefer this model for small watersheds [1]. The Gumble ExtremeValue-I distribution was selected for the frequency analysis of rainfall in order to generate the peak rainfall for differentreturn periods. The SCS type-2 distribution of rainfall was used for generating the peak storm hyetograph. The designrainfall for 10 & 200 years return period was found to be 4.06 and 6.99 inches. The design Hydrograph for differentreturn periods was estimated using HEC-HMS software. The design hydrograph for the 10 & 200 years return periodwas found to be 83.4 and 191.5 cumecs respectively.
Wisal Khan, Asif Khan, Zafar Ullah Khan, M.Ishfaq, “EVALUATION OF THE HYDROLOGICAL MODELLING USING CLIMATIC STATION DATA: (A CASE STUDY OF SAROBI SMALL DAM)”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 6, Issue 5, pp. 48-52, May 2019.
