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Geophysical Investigations of a Rural Water Point Installation Program in Nampula Province, Mozambique

Chirindja, Farisse LU ; Sjöstrand, Erik; Enkel, Oskar and Dahlin, Torleif LU (2013) Near Surface Geoscience 2013
Abstract
There are many projects in Mozambique for poverty reduction. One of these projects is funded by Millennium Challenge Account (MCA) and is aimed to install a total of 600 rural water points in the provinces of Nampula and Cabo Delgado. Each water point consists of a drilled well, a water pump and a communal washing basin.



Vertical Electrical Sounding (VES) was used for assessing the uitability of the drill sites but despite this many boreholes have come out with an insufficient yield and the failure rates in certain areas are as high as 50 %. Continuous Vertical Electrical Sounding (CVES), also known as Electrical Resistivity Tomography (ERT), was carried out in an attempt to explain the high failure rate. In total 11... (More)
There are many projects in Mozambique for poverty reduction. One of these projects is funded by Millennium Challenge Account (MCA) and is aimed to install a total of 600 rural water points in the provinces of Nampula and Cabo Delgado. Each water point consists of a drilled well, a water pump and a communal washing basin.



Vertical Electrical Sounding (VES) was used for assessing the uitability of the drill sites but despite this many boreholes have come out with an insufficient yield and the failure rates in certain areas are as high as 50 %. Continuous Vertical Electrical Sounding (CVES), also known as Electrical Resistivity Tomography (ERT), was carried out in an attempt to explain the high failure rate. In total 11 sites were investigated, including seven boreholes with sufficient yield and five boreholes with insufficient yield. A perpendicular cross with two 400m survey lines were made over 7 boreholes and single 400m survey lines were made over 5 boreholes.



Due to lateral variation the geology in study area is best described in 3D therefore ERT appears to be a suitable method for groundwater exploration and could probably lower the failure rate. (Less)
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organization
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Contribution to conference
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published
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pages
4 pages
conference name
Near Surface Geoscience 2013
external identifiers
  • Scopus:84897487391
language
English
LU publication?
yes
id
f3a66198-70b7-4322-97c2-c07e21e4236b (old id 4124016)
date added to LUP
2013-10-25 10:10:53
date last changed
2016-10-13 05:00:53
@misc{f3a66198-70b7-4322-97c2-c07e21e4236b,
  abstract     = {There are many projects in Mozambique for poverty reduction. One of these projects is funded by Millennium Challenge Account (MCA) and is aimed to install a total of 600 rural water points in the provinces of Nampula and Cabo Delgado. Each water point consists of a drilled well, a water pump and a communal washing basin.<br/><br>
<br/><br>
Vertical Electrical Sounding (VES) was used for assessing the uitability of the drill sites but despite this many boreholes have come out with an insufficient yield and the failure rates in certain areas are as high as 50 %. Continuous Vertical Electrical Sounding (CVES), also known as Electrical Resistivity Tomography (ERT), was carried out in an attempt to explain the high failure rate. In total 11 sites were investigated, including seven boreholes with sufficient yield and five boreholes with insufficient yield. A perpendicular cross with two 400m survey lines were made over 7 boreholes and single 400m survey lines were made over 5 boreholes.<br/><br>
<br/><br>
Due to lateral variation the geology in study area is best described in 3D therefore ERT appears to be a suitable method for groundwater exploration and could probably lower the failure rate.},
  author       = {Chirindja, Farisse and Sjöstrand, Erik and Enkel, Oskar and Dahlin, Torleif},
  language     = {eng},
  pages        = {4},
  title        = {Geophysical Investigations of a Rural Water Point Installation Program in Nampula Province, Mozambique},
  year         = {2013},
}