Identifying the Morphometric Parameters Impacting the Peak Flows, case
study of Taza City, Morocco.
Abstract
The study examined the morphometric aspects that influence peak flows
and flood occurrence over the Larbaâ Wadi and its tributaries in Taza
city. It emphasized the importance of understanding the physical
parameters of the watershed to address flood problems. The study
identified the factors determining flood discharges in urban areas. It
reflected the natural features, speeding the water collection and
leading to its accumulation downstream. The findings revealed that
Larbaâ and Bouljraf basin shapes allowed for high flow rates, while
Jaouna, Dfali, Rhouireg, and Taza decreased them. The concept of
concentration time also demonstrated its role in flood evolution. It was
the same time for the two principal Wadis, causing the flow to rise at
the confluence point. The drainage and hydrographic densities
highlighted the importance of flushing processes on impermeable marl
lands. These findings could assist the city in identifying the factors
contributing to rising floodwater volumes. They can guide the people in
charge of dealing with hydrological threats. Similarly, the quality and
accuracy of the results suggest that the method is a robust means of
characterizing specific parameters that enhance the impact of flood
risk.