SMEC completed an Independent Environmental and Social Impact Assessment (ESIA) of the Diamphwe Multipurpose Dam and associated structures, including: the conveyance main to the treatment works; water treatment works, balancing tank and pipeline to Lilongwe City; temporary construction sites; and borrow pits.
SMEC’s scope of work included:
- An Environmental and Social Management Plan (ESMP)
- A Environmental Monitoring Plan (EMP)
- A Resettlement Action Plan (RAP);
- Development of Bills of Quantities (BOQ) for environmental monitoring, mitigation and impact management.
Studies recommended the construction of a multipurpose dam on Diamphwe River as a new source of water for Lilongwe.
The objective of this project was to secure and improve water supply to Lilongwe City (and surrounding areas) until 2035, and support large-scale irrigation and agriculture, fish farming and livestock production.
Project works comprised the construction of:
- A 25 m high roller-compacted concrete dam with a storage capacity of 150,000 m3
- A 170 m spillway
- Water supply and irrigation intakes
- 80 km of pipeline
- A 1,000 hectare irrigation scheme.
- Technical Area:
- Lilongwe Water Board