CONSULTANCY SERVICES FOR THE PREPARATION OF THE NATIONAL WATER RESOURCES DEVELOPMENT PROGRAM (NWRDP) AND ASSESSMENT OF DAM SAFETY PRACTICES IN MOZAMBIQUE

The Sub-Consultant (Z&A) is providing the following Consultancy services:

1.         Feasibility Study Phase

Z&A shall prepare the Feasibility design of the Macuje Dam for Nampula and ancillary structures (intake, bottom/mid level outlet, spillway), and some alternatives to be discussed, according to the World Bank Standard. The sub-consultant shall also support the Consultant to redact the investigation plan for engineering surveys to be done before the detailed design. The subconsultant will provide support for the hydrological and flood analysis, sediment transport analysis and preliminary topographic surveys (including the DTM), that remain in charge to the Consultant, as well as the geological surveys and reports.

2.         Detailed Design Phase

Characteristics of the examined dam sites

RN – DescriptionΧ (m)Y (m)Total dam height (m)Dam length (m)
WGS84 UTM Zone 37S
Dam axis 1512762.58345727.033.0715
Dam axis 2513322.88345024.936.0770
Dam axis 3513590.58344568.833.0770

The final feasibility study suggested proposal No2. The Final Dam characteristics are the following: A rockfill dam at the order of 36m in height, is estimated to be approximately 770m long at crest axis. The river invert elevation is set at +407.00masl. The crest width is set at 8.0m, and the embankment slopes are proposed 2.5:1 (width: height) for the upstream face and 2:1 for the downstream face.