Flood Protection for New Sohag City

New Sohag City is located approx. 20 km southwest of Sohag city, stretching over an area of 130 square kilometers.

The project area is permeated by several catchment outlets, medium-to-small in size, compared to catchment basins and stormwater run-offs. Hence, it is essential that New Sohag City is protected from the threat of flashfloods, using dams that have been constructed for this purpose, by conducting flood-protection works’ studies and designs.

This study covers the following:

The hydrological study was conducted using available climatic data, particularly stormwater data, as well as topographic maps, digital images captured via satellite for the study area, geological maps, surface run-off data, and land utilization in stormwater catchments.

To study the existent circumstances in the study area, a preliminary soil investigation was carried out. The hydrological study encompassed hydrometeorological and hydro morphological studies, alongside hydrological analysis of valleys affecting the area.

To calculate the maximum flood discharge, the standard formula was applied for valleys smaller than one square kilometer, while in the case of valleys with a greater area; the SCS equation was applied to avoid high discharge rates resulting from using the ‘standard equation.

The project covers the design of 6 earth dams with heights ranging from 2 to 6 meters and a capacity of 365,000 m³.