wadi floods

topography

optimisation

earthworks

 

optimisation of flood plain

ecological no-entry zones

the wadi at the edge of the desert is characterised by impermeable loess soil and therefore exhibits drastic flash floods. as the regional city expands towards the wadi, an ecological management is required.  parametric modelling of flood plains and earth works enables sensitive , sustainable intervention.  removing debris from the wadi rediscovers its ancient topography, form. it is a methodology emphasising conservation (rather than new building), restoration, resiliency.

under construction

The wadi runs from the mountain ridge of the Great Rift Valley in the east, to the Mediterranean on the west. Due to the unique impermeability of the loess soil, most of the water passes through the wadi in concentrated, extreme seasonal desert floods. As the wadi reaches the edge of the city, its water must be managed.  Our aim is to do so without 'engineering' the wadi, leaving it to remain an external expanse tied to its regional wilderness, rather than to the culture of the city nearby.

The mapping of flood scenarios defines a parametric model of minimal earthworks which balances and maintains fill and excavation on-site. The earthworks mostly involve the recycling of illegal building debris. The flood management work is therefore an act of restoration rather than intervention. Thus the final design is almost unseen. Design emphasis is placed on selected crossings of the wadi, the approach to the water, vegetation enhancement and long views across the distance.

Wadi Floods

Restoration of Kovshim Stream  _  Be’er Sheva _ 370 dunams  _  2016-ongoing  _  client: Shikma Besor Drainage Authority.

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