GOVERNMENT OF ETHIOPIA
WATER RESOURCES DEVELOPMENT AUTHORITY
AMIDARA DRAINAGE PROJECT - II
AMIBARA DRAINAGE PROJECT PHASE-II
PREPARATION OF DETAILED DESIGNS,TENDER DOCUMENTS,
PROJECT PREPARATION REPORT AND
ENVIRONMENTAL IMPACT ASSESSMENT REPORT
WATER AND POWER CONSULTANCY SERVICES (INDIA) LTD
(International Consultants in Water Resources)
'KAILASH',26, KASTURBA GANDHI MARG.,
NEW DELHI-110 001, INDIASUPPLEMENTARY STUDY
AMIBARA DRAINAGE PROJECT - II3
3
SUPPLEMENTARY STUDY TO AMIBARA DRAINAGE PROJECT PHASE II
A. SCOPE OF WORK
1.   The Main Drain 1 (MD1) has a normal drainage flow of 1.4 m /s and hence a potential for providing irrigation water t£o the extent df 1.4 m /s. The alignment of MD1 is such that with a cross-regulator and a head regulator, the drainage water can be diverted at point A shown on the Index map at Appendix 1, with a level high enough to feed the eastern branch of the Angelele Pasture Irrigation canal at point B.
The structures and canal that have to be investigated, 
designed and estimated are as follows:
(i)       A cross-regulator across MD1 and a head 
regulator for the offtaking canal at A in the 
Index map.
(ii)      An outfall structure negotiating the water level at B of the Index-map.
(iii)     A contour canal with associated culverts for roads and drainage crossings from A to B in the Index-map for an approximate length of 10 km.
2.   The above suggested work shall provide irrigation water almost free  of  cost  to  the  Angelele  Pasture  Irrigation  system. However, in certain short periods, when the salinity of MD1 shall be excessive, restrictions may have to be imposed on this gravity flow irrigation Water of MD1. The salinity of pumped water from the Awash shall be 0.4 mScm’1  whereas the capacity of the canal is 3m3/s. The allowable upper limit of salinity of good irrigation water is 0.7 mScm’ . Hence, if the total flow is 3m3/s and contribution of MD1 water is 1.40 m3/s, then the allowable salinity of MD1 can be upto 1.04 mScm-1.
-1
1As shown in Table 1, to 5 the actual observed salinity of MD1 is well within this limit of 1.04 mScm'1 for majority of the observations  and  can  be  safely  used.  The  situation  may marginally change on development of ADP II.
When NIDI water shall be augmented with surface water by run off from the rainfall or from extra rejection flow from the canal system of the Amibara Irrigation Project, the flow of MDl will be more than the normal flow arrived at a surface drainage contribution of 0.15 1/s/ha and 0.2 1/s/ha from sub surface flow. It may also be possible to augument the flow in MDl  by  having  the  rejection  flows  of  the  AIP  system deliberately increased. The 5 years drainage flow of MDl is 5.5 mVsec and discharges upto this can be safely carried by MDl. during the higher flow in MDl above the normal flow. Hence, the overall supplementing irrigation water may go upto 3m’/s through the link canal. This will cause considerable saving in the pumping cost of the Angelele Pasture Irrigation Project.
During non-irrigation season of AIP, the irrigation water 
of the AIP can be fully diverted to Angelele Pasture 
Irrigation system and the pumping of the water shall not be needed.
It  is  true  that  due  to  the accumulated  salinity  of  the secondary  salination  leached  suddenly  to  the  sub-surface drain, the salinity of MDl could go above 1.04 mscm'1 for a snort period, for which effective monitoring of MDl water at offtake point shall have to ensured. This will help in not diverting MDl water when • the salinity of the water is high, say above 1.04 mscm .
1
6. The contour canal AB taking off from MDl is aligned along the eastern edge of the Amibara Extension area (area G) where
-2irrigation 
is 
not 
yet 
deve
loped. 
This 
area
can 
be 
conveniently 
comm
anded 
by 
the 
contour 
canal 
AB 
so 
far 
as 
3
ground slope is concerned.
Thus  this  canal  can  be  an  alternative  means  of  providing irrigation to this area of about 1,570 ha, the irrigation water requirement of which roughly corresponds to the normal drainage flow of MD1 of about 1.4m /s. However, the water of MD1 could be saline at times to such an extent that it shall not be fit to be used for irrigation unless mixed with less saline  water.  Hence,  the  option  to  mix  the  contour  canal water with the pumped water of the Angelele Pasture Irrigation Project may have to be eventually considered. The area G may then be commanded by a canal system using the mixed water. This possibility of irrigation of the area G that is the Amibara Extension area could be considered at the next phase of the proposed supplementary study. The present study would be limited to the benefit of supplementing gravity flow of 1.4m /s to 3.0 m /s to the eastern branch of the Angelele Pasture pump canal system.
7.   It needs to review the following points under the proposed study:
(•i)      What would be the duration of the normal flow of drainage  water  in  MD1  and  what  shall  be  the dependable discharge.
(ii)      What extra discharge of the canal system of AIP can
be safely surplussed into MD1 to augment its flow. Whether this‘saving can be adequate to serve the western  command  of  Angelele  Pasture  Irrigation without any additional pumping facilities.
3
3
-3(iii)      Whether there is any danger of silting up of MD1
due to more than envisaged rejection canal flow at (ii) above, which shall contain more silt.
(iv)       What will be the economic benefit of replacing pumped irrigation of Angelele Pasture Irrigation 
' System vis-a-vis the capital cost of MD1 diversion and whether the cost versus benefit gives a favourable return on the investment.
B.   MANNING  SCHEDULE
Man-month
1. Consultants Input
1.
Project Direction
0.5
2 .
Team Leader, from 1  to 4  month
st       th
4.0
3 .
Hydrologist cum System Engineer
2nd month
1.0
4 .
Irrigation & Drainage Expert from 1st to 4Lh month
4.0
5 .
Design Engineer 2  to 3  month
nd       rd
2.0
6 .
Tender Document Expert
2.5 to 3.5 month
1.0
7*.
Economist 4th month
1.0
Total
13.5 man-month
2 .  Input of MOWR Tech. Staff
1.
Counterpart
to
I&D Expert
4.0
2 .
Counterpart
to
Design Expert
2.0
3 .
Counterpart
to
Hydrologist
1.0
4 .
Counterpart
to
T.D. Expert
1.0
5 .
Counterpart
to
Economist
1.0
Total
9.0 man-month
-4Inputs of Supporting Staff of MOWR 3 .
1.
Draftsman
4.0
2 .
Secretary
4.0
3 .
Typist
2.0
4 .
A Team of 2 Surveyors, and' 5 labourers
2 helpers
1.0
5.   Photocopy operator
6.   Messenger
7.   2 Driver for vehicle at Addis 8 .  Driver for survey Team
4.0
4.0
4.0x2
1.0
C. INFRASTRUCTURE TO BE PROVIDED BY MOWR
1 .  For study Team at  Addis
(i) Equipments:       All equipments available for ADPII
(ii) Vehicle :        2  vehicles,  one  of  which  shall  be a station wagon
2. For Survey at Site
(i) Equipments:       All  survey  equipments  needed  for topographical survey
(ii) Vehicle :        1 pick-up for 1 month
3.   Residential and Office Accommodation:        As provided for ADP II
-5D EXPENDITURE BREAKUP
PART I - SUMMARY
FIRM NAME
WATER AND POWER CONSULTANCY SERVICES (INDIA) LIMITED, NEW DELHI.
3TUDY TITLE :          CONSULTANCY Services for the Supplementary Study to Amibara Drainage Project (Phase II) for preparation of detail Design & Tender Documents, Project Preparation Report & Environmental Impact Assessment Report.
All COSTS  IN US DOLLARS
Item
Foreign Currency Component
Local Currency Component
Total Costs 
(US D)
1.
Home office salaries including overhead on
home
3,000
-
3,00J)
Office Salaries
2 .
Field Staff salaries including overhead on
Field
67,500
-
67,500
Staff Salaries
3 .
Sub total (item 1 and
2)
70,500
-
70,500
4 .
Travel and per diem of personnel
(a) International Trave
l
8,000
-
8,000
(b) Travel inside Ethiopi and per diem in the country
a 
host 
9,800
9,800
-65. Miscellaneous Direct Costs Communications,    transportat ion stationery and supplies,
transportation and other direct costs (excluding costs of Consultants, sub-Constractors etc. )
6 .  Cost of Sub-Consultants/ contractors
7 .  Sub-Total (Item 4,5 and 6) 8 .  Total (Item 3 and 7)
9 .  Profit or fee GRAND TOTAL
7,600      7,800      15,400
NIL
NIL
NIL
15,600     17,600    33,200 86,100     17,600    103,700
$ 103,700
(US DOLLARS ONE HUNDRED THREE    THOUSAND SEVEN HUNDRED ONLY)
-7PART II TRAVEL COSTS
All COSTS  IN US DOLLARS
Item
Foreign Currency
Local
Cur r\p n c y
i:
Component        Component
1. International Travel
Delhi - Addis Ababa
Delhi Round trips 8 Nos 
@ $ 1000/trip
2 .  Local travel in Ethiopia Addis Ababa - Project
Site To round trip $ 200/trip 3 .  Per diem to experts at
8,000
2,000
Addis Ababa & at 390 mandays ★★ Project site    @ US$ 20/day
7,800
8,000
9,800 ★
★  Payment  shall  be  made  in  equivalent  Local  Currency  (Birr) at  the  exchange  rates  prevailing on the day of release of 
money. 
“ *
★★ Per diem shall be paid as per the actual time spent in days in Ethiopia by experts.
-8PART HI HALARIJDU
All COflTfl   IN U1J DOLLAR,)
Poeition or
EmI I mated
Monthly
Total
Job Title
Work months
rate
COtltM
Ufi $
urzj $
A.           HOME OFFICE
1 . Project Coordinator
1
Suppoi t i nq St at t
1
2,000
1,000
2,00Q
L, 00(/'
.Sub Total A:                3,000
B. FIELD STAFF
1. Project Direction Team 0.5
2 .  Team Leader with 
6,000
3,000
background of Drainage A. Irrigation
4
5,100 
20,400
3.
Hydrologist cum
System Engineer
1
4,900
4,900
4 .
Irrigation cum drainage Engineer with Water Management background
4
4,900
19,600
5.
Structural Designer
2
4,900
9,800
C.
•
Tender Document/Cost Estimation Expert
1
7 .
Economist
1
4,900
4,900
4,900
4,900
Sub Total B
67,500
TOTAL SALARIES  (A + B)
70,500
-9Item
PART IV MISCELLANEOUS DIRECT COSTS
All COSTS IN US Dollar Component
1.   Communication   Charges 
in Ethiopia
Telephone, Fax, Telex, Cable Mail, Courier etc.
US DOLLARS Local 
Currency Component
500
i;
2 .
Purchase of reference material (books) maps and reproduction of data etc.
200
200
3 .  Stationery for operations
(a)   Field office (Ethiopia)           200            300
4 .  Cost of documentation
5 .  Fuel & Maintenance of Vehicles including spares
3,000
2,000
3,000
2,000
6 . Insurance charges 500 500
7. Bank Charges 500 100
8 . Laboratory Testing 200 200
9 . Contingencies
• 
Total
Grand Total
1,000
7,600
1,000
7,800
15/400
NOTE
a)   No provision has been made for accommodation as all accommodations (office and residential) have to be provided free of cost by the Ministry'of Water Resources.
b)   Local currency component shall be given in equivalent Birr at exchange rates as applicable on date of release.
c)   All items in column 2 i.e local Currency Component except items 4 will be reimbursed against invoices.
d)   Items in column 1 i.e US Dollar component item 2, 3, 5,^6, 7/ 8Z 9 will be reimbursed against invoices.
-10E    REMUNERATION AND PAYMENT
Consultant's Fee
The  total  amount  of  fee  payable  to  the  consultants  for carrying  out  the  supplementary  study  to  Amibara  Drainage Project (Phase II) shall be US Dollars 103,700 (One hundred three thousand seven hundred Dollars) out of which US $ 86,100 Eighty six thousand one hundred US Dollar shall be in foreign currency  (US  $)  and  US  $  17,600  (Seventeen  thousand  six hundred US Dollars) in equivalent local currency Birr)
Payment Terms
(i)        Currency of payment: As agreed between Ministry of Water Resources, Govt of Ethiopia and WAPCOS, the consultant, payment  of  foreign  currency  component  shall  be  in  US Dollars and local currency component in equivalent Birr.
(ii)      Consultants will be directly paid by the African
Development  Bank  Ministry  of  Water  Resources  Govt  of Ethiopia for the above services.
(iii)       The agreed terms of payment are as follows
(a)  At the commencement of   the study         20
(b)  On submission of
(i)       Inception Report
10
(ii)
Draft Design Report
20
(iii)
Tender Documents
10
(iv)
Final Design Report
25
(V)
Project Preparation
Report
15
F.   WORK SCHEDULE
1 .   Commencement of the study
2 .   Submission of Inception Report -11
14h June 1996
29h June 19963 .   Field Survey
4 .   Submission of Draft Design Report 5.   Submission of Tender Document
14th
13th
June
July
to 1996
1st ,Sept. 1996
2 9th Sept 1996
6.   Submission of Final Design Report          1st Oct. 1996
7.    Submission of Project preparation        13ch Oct.1996 Report
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Summery

Amibara Drainage Project - II Summary

Amibara Drainage Project Phase II - Supplementary Study

Project Overview

The Amibara Drainage Project Phase II is a water resources development initiative in Ethiopia, with consultancy services provided by Water and Power Consultancy Services (India) Ltd. The project involves detailed designs, tender documents, project preparation reports, and environmental impact assessment for drainage and irrigation systems.

            Key Objectives
            Utilize Main Drain 1 (MD1) drainage water (1.4 m³/s normal flow) for irrigation
Divert water to Angelele Pasture Irrigation system via a 10 km contour canal
Reduce pumping costs by using gravity flow
Potentially irrigate 1,570 ha in Amibara Extension area

        

Scope of Work

Infrastructure Components

Cross-regulator across MD1 and head regulator for offtaking canal
Outfall structure at Angelele Pasture Irrigation canal
10 km contour canal with associated culverts

Water Quality Considerations

The project addresses salinity concerns in MD1 water:

Allowable salinity limit for irrigation: 0.7 mS/cm
Pumped Awash River water salinity: 0.4 mS/cm
MD1 water can be mixed when salinity ≤ 1.04 mS/cm
Monitoring system required for salinity levels

Key Data Points

Salinity Observations (1990-1994)

Year	Salinity Range (mS/cm)	Notes
1990	0.45-1.75