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Hatta New Dam M5

Dubai, UAE

Project outline

Design of a reservoir for Hatta region of Dubai Municipality, requiring a new dam and four saddle dams to store 3.4 million cubic metres of water.

Contract value

£7m

Key features

Water supply in area of the Middle East
Embankment Design
Topographic Mapping
Hydrology of arid regions

Skills utilised

Dams and Reservoirs
Construction Supervision
Geotechnical
Hydrology

Project detail

The Reservoir was designed to store 3.4 million cubic metres of water, for potable water and irrigation supply to the Hatta region of Dubai, UAE. The reservoir is located in the adjacent wadi to New Dam Z6, also designed and construction supervised by Faber Maunsell Limited between 1997 and 1998. The reservoir is impounded by a total of 5 dams (main dam and 4 saddle dams).

The Main Dam is a 36 m high gravel fill embankment, with a central asphaltic concrete core. The shoulders are built on the wadi gravels while the core is founded mainly on rock.

The saddle dams are also embankment dams up to 220 m long, with asphaltic concrete and reinforced concrete watertight elements to suit the site layouts and the contractor's capacities.

The spillway, a conventional overflow weir and concrete lined chute, discharges into a small side wadi that joins the main wadi a short distance downstream of the Main Dam. Some channelling works in the wadi bottom are required to minimise impact on a farm downstream of the dam.

Topographic mapping and geotechnical investigations (boreholes and in situ testing) were commissioned prior to the design stage. The investigations examined reservoir watertightness as well as foundation conditions for the dams.

For more information, please contact Richard Doake