Assessment of Hydraulic Parameters

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ASSESSMENT OF HYDRAULICPARAMETERS OF GROUNDWATER

AQUIFERS IN KOGI STATE

GRADUATE SEMINAR

on

By

Ayenigba, Sogo Emmanuel

(08/30GB096)

NIVERSITY OF ILORIN

DEPARTMENT OF CIVIL

ENGINEERING

SupervisorPro!" #" F" Su$e

%une &'()&*



The development of groundwater resource involves three main

stages namel! e"ploration# evaluation and e"ploitation$ This

stud focuses on the evaluation stage# which generall

encompasses measurement of hdraulic parameters# and

estimation of a%uifer ield$ The analses pumping test data

collected from various organi&ations was used to determine the

hdraulic parameters within the stud area$ Transmissivit valuesrange from 0$' * 8$9+ m+/da# hdraulic conductivit range

from 0$086' * $33 m/da# pumping rates range from $3 * 8

,/s# while the -orehole depths range from $3 * +0+m$

Groundwater maps of the hdraulic parameters were alsodeveloped for the stud area$ These results show that the a%uifers

within the stud area will serve as a sustaina-le water source$

The development of groundwater resource involves three main

stages namel! e"ploration# evaluation and e"ploitation$ This

stud focuses on the evaluation stage# which generall

encompasses measurement of hdraulic parameters# and

estimation of a%uifer ield$ The analses pumping test data

collected from various organi&ations was used to determine the

hdraulic parameters within the stud area$ Transmissivit valuesrange from 0$' * 8$9+ m+/da# hdraulic conductivit range

from 0$086' * $33 m/da# pumping rates range from $3 * 8

,/s# while the -orehole depths range from $3 * +0+m$

Groundwater maps of the hdraulic parameters were alsodeveloped for the stud area$ These results show that the a%uifers

within the stud area will serve as a sustaina-le water source$

Graduate Seminar 2

A#STRACT



INTRODUCTIONGroundwater is a natural resource that is of

immense importance to life and itscharacteristics are greatl determined - the

properties of the immediate geologic formations

(.g-oewe and anpo# +0+)$

Graduate Seminar 3



• Generall# the development of groundwater

resource involves three (3) main stages# theare 1"ploration# 1valuation and 1"ploitation$

• This stud focuses on the 1valuation 2tage#

which generall encompasses measurement of

hdrologic parameters$

Graduate Seminar 4

INTRODUCTION



The im of this stud is to investigate the

groundwater potentials of ogi 2tate with thefollowing o-4ectives5

$ etermine the a%uifer and well characteristics

of the area$

+$ 7rovide groundwater potential maps of the

stud area$

Graduate Seminar 5

AIM AND O#%ECTI+ES



STUDY AREA

Gr,-u,.e Se/in,r 6

Fi0ure & M,p S1o2in0 .1e S.u-3 Are,



METHODOLOGY The methodolog used for this stud involved

two ma4or processes5• ata collection and

– .:1;# ,oo4a

– ogi 2tate <inistr of =ater >esources# ,oo4a

• ata analsis

– %uifer Test 7ro ?

• :ooper@Aaco- method of analsis

Graduate Seminar 7



RESULTS

Graduate Seminar 8

total of seventeen (') pumping test data

representing seventeen (') locations across the

2tate from the three (3) geo@political &ones were

collated and analsed$



Graduate Seminar 9

RESULTST,4$e & Pu/pin0 Tes. Resu$. !or O$o04,

An example of the pumping test results is shown in Tale !



Graduate Seminar !"

RESULTS

Fi0ure ( Ti/e5Dr,2-o2n 0r,p1 !or Is,n$u

The pumping test results were anal#sed using the A$uifer Test%ro 4 software& 'hart result from a orehole in (sanlu is shownin )igure 2&



Graduate Seminar !!

RESULTS

S/No Location LGA SenatorialDistrict

Boreole

De!t"m#

$um!

Rate"L/s#

%y&raulic

'on&ucti(ity"m/&ay#

Transmissi(ity"m)/&ay#

* log-a eina 1astern 80 +$3 0$0+ +$3

) g-atolo eina 1astern 8? +$3 0$0+3' +$9

+ .gah lama-oro 1astern +0+ +$ 0$0+ +$3

.dah .dah 1astern +0 8 0$? +$38

- dogo 4aouta :entral 3$ $3 0$' ?$3. Gegu ogi =estern 8$6 $+3 0$'6?

cha-e ogi =estern +0$? $3 0$+6 3$39

0 seni ogi =estern +6$8 $? 0$96 ?$89

1 .sanlu Cag-a@1ast =estern 3+$3 $?+ 0$086' +$3

*2 .g-a4ogun <opa =estern +9$9 $?+ 0$?0 $

** .lue a--a@Bunu =estern 3$ $33 $33 '$3

*) 14i-a Cag-a =est =estern +3$+ $33 0$98 ?$36

*+ .amoe .4umu =estern $3 $33 $33 8$9+

* mode a--a@Bunu =estern 33$+ $0+ 0$0+39 0$'

*- .shi a--a@Bunu =estern ?3$9 $?+ 0$0'3 +$96

*. 1miworo 4aouta :entral ? $33 0$0? $'

* ,oo4a ,oo4a =estern 36$6 $33 0$+08 6$'

T,4$e ( Su//,r3 o! Resu$.s ,n- An,$3ses



Graduate Seminar !2

RESULTS

Fi0ure 6 Con.our M,p !or Tr,ns/issivi.3



Graduate Seminar !3

RESULTS

Fi0ure 7 Con.our M,p !or H3-r,u$i8

Con-u8.ivi.3



Graduate Seminar !4

RESULTS

Fi0ure 9 Con.our M,p !or #ore1o$e Dep.1



Graduate Seminar !5

RESULTS

Fi0ure * Con.our M,p !or Pu/pin0 R,.e



Graduate Seminar !6

CONCLUSION• The hdraulic parameters of a%uifers in selected wells in ogi 2tate

have -een determined - the analsis of availa-le pumping test data$

Groundwater maps for transmissivit# hdraulic conductivit# -orehole depths and pumping rates have also -een developed$

• Transmissivit values and Ddraulic :onductivit values were

found to -e highest in the western district of the state$ The rate of

pumping however# is highest in the 1astern district$

• .t can -e deduced that wells located in the 1astern 2enatorial istrict

are deeper than those in the =estern and :entral 2enatorial istricts$

This implies that the depth to groundwater is more and therefore it

would -e more difficult and e"pensive to drill -oreholes in this area$

• The a%uifers within the stud area have also -een shown (-ased on

Transmissivit values) to serve as a sustaina-le water source for

domestic uses$



Graduate Seminar !7

THANK YOU

Documents

Assessment of Hydraulic Parameters