Midlands Dam
The Midlands Dam on the Grand River South East (GRSE) on the Central Plateau of Mauritius will be utilized to improve the water supply for domestic, industrial and irrigation purposes in the northern plains of the island. To establish the optimum dam type for the given site conditions, different alternatives were investigated (homogeneous earthfill dam, roller compacted concrete dam, rockfill dam with clay core, asphaltic core or surface sealing). The dam is founded on the residual soil, thereby avoiding extensive excavation works.
Client:
Government of Mauritius, Ministry of Public Utilities, Port Louis
Period:
1997 - 2003
Services:
- Review of feasibility study
- Hydrological studies
- Tender design
- Pre-qualification process
- Establishment of tender documents
- Bid evaluation
- Construction design
- Construction and installation supervision
- Training of personnel
Technical data:
- Catchment area 17.2 km²
- Mean annual rainfall 4,100 mm/a
- Active storage capacity 25.5x106 m³
- Max. dam height above foundation 30 m
- Crest length 2,500 m
- Spillway capacity 645 m³/s
- Capacity of water intake 2x50 m³/s
- Capacity of bottom outlet 40 m³/s