TY - GEN
T1 - Development of Regional IDF Relationships for Oman
AU - Sana, Ahmad
AU - Al-Malki, Sheikha
N1 - Ahmad Sana is an Associate Professor at the Department of Civil and Architectural Engineering, Sultan Qaboos University, Oman. He received his BS (Civil Engineering) from UET, Lahore, M. Eng. from AIT, Bangkok and PhD from Tohoku University, Sendai. .He is a life member of Pakistan Engineering Council. He has 47 journal and 63 conference publications and contributed to 7 books. His research interests include turbulence modeling of boundary layers, surface water groundwater modeling, measurement and modeling of coastal processes, and seawater qualityHis research interests include turbulence modeling, rainfall-runoff relationships in arid regions, groundwater modeling, sediment transport, coastal hydrodynamics and seawater quality.
Sheikha Al-Malki is a former master’s degree student at Sultan Qaboos University, Oman. She is currently working as the Head of Aflaj Inscribed in World Heritage List, Ministry of Agriculture, Fisheries Wealth and Water Resources, Muscat, Sultanate of Oman.
PY - 2022/12/1
Y1 - 2022/12/1
N2 - Hydrologic design, planning, and management of water resources projects usually require the knowledge of Intensity-Duration-Frequency (IDF) relationships in mathematical or graphical form. In many countries the data scarcity in this regard poses a serious challenge. Generally, for an ungauged location, simple estimates based on the neighboring stations or similar locations are used to develop IDF relationships. The present study aims at developing IDF relationships at various rainfall measuring stations in Sultanate of Oman using Gumbel’s distribution method. A total of 51 gaging stations having at least 12 years of data (excluding missing data) were selected. The maximum rainfall depth values were determined for seven different durations (5, 15, 30, 60, 360, 720, 1440 minutes) and for six return periods (2, 5, 10, 25, 50, 100 years). Bernard’s model was adopted to develop IDF relationships for all the stations based on the results generated from the measured data. The parameters of the IDF relationships were calculated by regression and the contour maps for all the parameters were drawn for determining the IDF relationships for ungauged locations. Finally, these contour maps are validated using the IDF relationships of some of the stations.
AB - Hydrologic design, planning, and management of water resources projects usually require the knowledge of Intensity-Duration-Frequency (IDF) relationships in mathematical or graphical form. In many countries the data scarcity in this regard poses a serious challenge. Generally, for an ungauged location, simple estimates based on the neighboring stations or similar locations are used to develop IDF relationships. The present study aims at developing IDF relationships at various rainfall measuring stations in Sultanate of Oman using Gumbel’s distribution method. A total of 51 gaging stations having at least 12 years of data (excluding missing data) were selected. The maximum rainfall depth values were determined for seven different durations (5, 15, 30, 60, 360, 720, 1440 minutes) and for six return periods (2, 5, 10, 25, 50, 100 years). Bernard’s model was adopted to develop IDF relationships for all the stations based on the results generated from the measured data. The parameters of the IDF relationships were calculated by regression and the contour maps for all the parameters were drawn for determining the IDF relationships for ungauged locations. Finally, these contour maps are validated using the IDF relationships of some of the stations.
KW - design rainfall; flood forecasting; Gumbel distribution, Intensity-Duration-Frequency curves; stormwater management
M3 - Conference contribution
SN - 9678-969-23803-0-0
SP - 371
EP - 387
BT - International Conference on Advances in Civil and Construction Engineering (ACCE)
A2 - Rizwan, Syed Ali
A2 - Ali, Shahid
A2 - Naseer, Asif
ER -
