WATER SUPPLY REHABILITATION PROJECT RURAL VILLAGE OF AMBOHIDANERANA,
SOAVINANDRINANA DISTRICT, MADAGASCAR
INTRODUCTION
The Gosford North Rotary Club (GNRC) embarked on a project to supply funding and technical advice to Thrive Madagascar (TM) for the Water Supply Rehabilitation for the Rural Village of Ambohidanerana, which is located about 8km east of the Provincial town of Soavinandrinana in the central part of Madagascar.
The village of Ambohidanerana has a current population of about 2,200. The existing water supply system comprises two separate spring sources, each with a small header tank with a pipeline (40mm HDPE pipe) about 1.0km long supplying storage reservoirs which feed 14 standpipe distribution points.
The project budget is A$24,723 of which NGRC has provided A$19,723 and Thrive Madagascar (TM) has provided A$5,000 and TM will provide any additional payments involved to achieve completion of the project.
The scope of work planned to achieve the rehabilitation of the water supply involved:
• Installation of an additional spring source, header tank and pipeline to increase the water supply available to the village and avoid seasonal shortages which have occurred over the last few years.
• Refurbishment of the 14 existing community standpipe distribution points,
• Repairs to the two existing storage reservoirs, and
• Provide a water connection to the new TM Clinic.
The project also includes ‘training’ of the village Water Maintenance Team, implementation of a Community Water Wise Program and consultation to encourage community ownership of the water system. Community involvement in the construction will include the provision of labour for the digging and backfilling of pipeline trenches and associated activities. TM staff will oversee and monitor the Water Project implementation.
A site visit was carried out from 6th to 24nd June 2018, with the period from 10th to 20th June spent at the project site staying in the TM compound in Ambohidanerana, with the other few days spent travelling and in the Madagascar capital, Antananarivo.
REVIEW OF EXISTING WATER SUPPLY SYSTEM
The first stage of this review involved a survey of the existing infrastructure. This was carried out by HS and Lova (fromTM) with some input from Parini. The survey was carried out using a Global Positioning System (GPS) instrument which provided the latitude, longitude and elevation of various key positions along the alignment of the two existing systems. The GPS co-ordinates measured are detailed in Appendix 1. The elevations are relative to a local datum of 100m located at the well structure in the TM compound.
NEW SUPPLEMENTARY SYSTEM
Work on the proposed additional water pipeline was commenced prior to our site visit. Much of the approximate 2,000 km long pipeline route had the trench dug by the community and the source header tank has been constructed by Pirani company.
CONCLUSIONS
A technical assessment of the two existing water supply systems has established that they are both is good working order with minimal leakage. System A has a pressure head of about 26m and System B has a pressure head of about 13 m. The combined systems presently provide a combined flow rate of about 36 L/min, however this is considered likely to reduce towards the later part of the ‘dry season’. This is a flow rate of about 50,000 litres/day.
A supplementary System C has been constructed to increase the capacity of the overall Water System. System C was not operational at the conclusion of our site visit, however recent advice has been received that this system is flowing into Reservoir A at a good rate.
Awaiting further advise from site.
WATER SUPPLY REHABILITATION PROJECT RURAL VILLAGE OF AMBOHIDANERANA.