AN INVESTIGATON OF GROUNDWATER POTENTIAL OF GADA TOWN, SOKOTO STATE USING VERTICAL ELECTRICAL SOUNDING
AN INVESTIGATON OF GROUNDWATER POTENTIAL OF GADA TOWN, SOKOTO STATE USING VERTICAL ELECTRICAL SOUNDING
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Date
2006-09
Authors
ABUBAKAR, Murtala Gada
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Abstract
The survey titled an investigation of groundwater potential of Gada town,
Sokoto State using uses vertical electrical sounding was carried out with the aim
of determining the ground water potential of the town and to determine as well
suitable areas for siting of hand-dug wells. Wells are the only reliable source of
water supply in the town and it’s surrounding during the dry season when most of
the wells dry up or have low yield. This necessitates the need to search for an
alternative source of water supply and hence the need for appropriate geophysical
survey to minimize the tendency of drilling abortive or low yield wells.
A geoelectrical survey using vertical electrical sounding VES was carried
out at 28 VES stations, which were equally spaced at 100 meters intervals out of
eight profiles established. The profiles run East-West and North-South depending
on the direction of the available spaces, and were labeled A-H.
The survey covers Gada town, which is about 2Km2 and the result, obtained
from the interpretation of the VES data collected to the construction of
geoelectrical and geologic sections. Bore holes logs of the town were also used
which aided the interpretation of the section.
A total of94 layers were encountered from the 28VES point survey in Gada
town, and only 24 layers were found to be suitable for ground water prospecting.
The layers were all located at the third and fourth states, and most of them were
found on C and E profiles with 5 and 4 points respectively. C I, C2, C3, C4, C5,
C6 for C profile and E3, E4, E6, E7, for E profile. A profile has two points at A2
and A4 on the 41h and yd strata, while only one point was located on B profile at
B2 point on the 4th layers but highly promising.
All the remaining layer points are less significant as they fall within the
non-suitable to moderate which are very unlikely to get water.
Description
A THESIS SUBMITTED TO THE POSTGRADUATE SCHOOL
AHMADU BELLO UNIVERSITY ZARIA IN PARTIAL
FULFILLMENT FOR THE AWARD OF THE DEGREE OF
MASTERS OF SCIENCE (M.Sc). GEOGRAPHY.
DEPARTMENT OF GEOGRAPHY FACULTY OF SCIENCE
AHMADU BELLO UNIVERSITY, ZARIA
Keywords
INVESTIGATON,, GROUNDWATER POTENTIAL,, GADA TOWN,, SOKOTO STATE,, USING VERTICAL ELECTRICAL SOUNDING