A A
A GEOLOGICAL MAP OF SODO - AAWASA AREA !. A INDEX MAP
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A # 3 3 3 3 3 3 3 3 4 4 4 4 4 # 4 # 4 4 4 4 5 5 Towns A A # 20 30 40 50 60 70 80 90 00 10 20 30 40 50 # 60 70 80 (! 90 00 10 (! # #
A 38°0'0"E ! 39°0'0"E ARJO AKAKI BESEKA NAZRET M ( .!
#
rb W ob ob 0 A 160.4 ob a Region Capital # Bejo 286.5 Al ob Goljota h
(! rh
8 rh # 29.3 c 8
Andelicho 254.7 tb i 280 l
20 (! A Al # 20 .! 20 20 u Kosha 0 tb ba # Zone Capital
(! 0 A 188.9 tb # rh # 1550m # G 57.6 # L. Shalla # Al Funamura # # # .! ! rh # Woreda Capital ( rh # # HOSAINA-ASELA tb # # rh rh # # !( rh tb ba # # # # # # # # # # # Developed Area D # # # # Y Gerema 252.1 tb tb (! 150 ob JIMMA HOSAINA ASELA 0 179.7 Roads
0 126.4 A ob
A 282 40.1 ob Arsi
0.3 o d
e Pm
N
rb a e
0 206.2 ob s g
Pm e
A L Asphalt
80 Negele m
260 e t
3.5 i
!. G o h e 0 A 50 0 A 164 G Shela ob l
0 42.7 Senbete Pm Gravel 92 Derneboya Y (! a N2b
Weremeerea Angecha (! k (! 60 u
!. 37 A (! tb l SODO - AWASA Ansho ob u (! Bulshana 0 15 Halkecha
(! Funto
A tb H
37 u
Medula Neketa l Rivers 8 (! rh i 8
10 !. 0 AA 9 J 10
0 10 282 10 e Major Rivers
0 d
Kulito 0 A 205 a DIME DILA DODOLA/GOBA Fedide w
! !. 14.6 318 ( 360 rh rb A 0 Lepis
0 A 0 A BH6 u (! Serara t Lakes
(! 0 25.7 !@ rb f
a #
# # # a
#
#
ob b
# (!
L
rb a # rh a # 84
rb d Swamp
rb d
e
#
Hobesheka a #
(! O 30.2 26.7 D i
Awara d
Mudula # A
# !
( a
b
o
(! rb u
#
k h 13.1 360 rh n
# l
s
G e
rh e Lake
i
# (! #
25.6 280.4 n
i D M
A (! rb rb ob e
# l rb T
# Pm i
Weta 13.5 s
a ARBA MINCH - AGRE MARRYAM p
(! e #
# L Gubaba # # # w #
# # rb # A G #
# Kuyera Boundaries
# # # (!
# # Bura
# #
# # (!
# #
# # # # # W ob BAKO AHEREMARIAM NEGELE
# # ob rb #
# Basin Boundary
# Drame # Shire
(! !
8 Pm # ob ( 8 #
# Pm
00 # Pm 00
!. 00 # # 00
# National Boundary
Durame #
#
# Melka
# G # Kore Anbosa # (! KONSO - YABELO
(! Sinkile # Oda # Alelu (!
(! #
#
Senbete Vol a
Adelo (! Pm # #
Tunto b Spring Discharge [l/s]
260 (! ob (! #
Gemesha(Shinshicho) Vol a
(! # BH3
d
387 # 0 159.6 214 #
A Pm !@ e
Basa # 247
96.4 267.5 #
5 56.4 140.2 (! D ISTIFANOS HAYK YABELO WACHILE
adero 241 A A W # Shashemene #
8.2 171 u 0.01 - 0.75
(! Mugenja 4.6 8.1 # A !.
(! Lesho 0 134.5 k
# #*
Mazoriya A 0 i #
! l ( Y i
Mazoriya 17.7 # rh Pm #
(! #* T # u 0.75 - 2.50
# rb #* y
# Vol i
rh # b K e n y a # # A Vol # 208 # 2.50 - 6.00 # 0 A 144.7 # # Wekentra 0 # (! 398 # Bomba 6.00 - 16.00 Sike (!
(! 18 272.4 # 71.4
# # A 81.4 # Ela Imbisho # # W !
(! 41 (
23.6 #
7 # # A 7
0 46.3 a
Wada # 45.4 # 16.00 - ! # # A ( # s
# # #0 # Pm
90 199.7 lac1 # # 0 # ## 90
# 0 34 m
90 # # 90 (! Ropi # # # # A
Bombe (! e
(! 0
Bedeya A Shone # 0 tb tb g
! Kersa ( 8.8 # A (! # # lac2 Geological Structure
(! Vol a
Vol s rh e rh lac2
rh H Major fault, downthrown shown rh tb G Major fault Korga Lera ! Bonkoya (! 152 ( D
37.3 248 ' Normal fault, downthrow shown a A h s e Gara Alemtena T Wesha rh W 47 i (!
Godo 0 A 100.3 !. kur
(! 0 7.5 W a
F 12.9 tb A k
ih r Kofele Normal fault
0 rh a e Areka rb W rh !. !. lac2 rb rb Wetera Inferred fault, downthrown shown
Suke(Arfita) AWASA 100 (!
7 (! !. 22.4 47.6 rh 7
A B A u a r r 1680m 0 50 Wendo a Inferred fault 80 36 1A77 80 80 0 A80 25.7 Genet 0 41.5 ArAb (! G 0 5.6 A 0 A0 A 0.1 A20.2 0.4 Major fault, downthrown shown, by satellite images 0 A 0 rb W L. Awasa 0.1 W tb 134.4 0 0 Shento Irba 100 83.9 A 80.1 A 56.7 0 45.5 Major fault, by satellite images 189 ! A ( Lola 399 A 12.5 14.1 rb 1 (! 0 tb 0 A 69.8 1.2 W 0 52.1 Kike Normal fault, downthrow shown, by satellite images 11.3 A (! B 0 G i N la " 20 30 40 50 60 70 80 90 00 t 10 20 30 40 50 60 70 80 90 00 10 N Normal fault, by satellite images " 0 151 e '
tb rh 0 ' 0 0 92.6
° A Meribo Benjo 0 Inferred fault, downthrown shown, by satellite images (! ° 7 5.4 ba Tulo rh (! Ashoka 7
Guguma (! #
#
#
# #
# rb (! (!
# rh Inferred fault, by satellite images # #
# 0 # Aruma
# ba (! #
# 70 0 A 6.6 #
# G Boko 0 5.6 1.8 Geology boundary # ! # ( A
7 Pm rh 7 #
Ofa # 7.8 Hanchucho ! ob
70 (! ( Boro 70 # 70 # Korangoge 70
(! Inferred geology boundary #
Boditi # Tula Ashoka 174 (! (! !. # # ba
0 114.4 # # A 221.7 Y 16.9 Seke # # 0 146.1 Caldera edge (! ba A # Fifota # 0 (! # Belela Wijigra 84 # (! (! #* # 48.3A 0 # 300 Abela 45.7 39.1 Volcano / Volcanic Cone # A Hole # 83 0 BH(!5 Dawe 5A8 # 0 146.6 Lida 17.5 # A (! 0 !@ 0 (! Wesherbi A rh ! 0 # # Dimtu Yirba Gelba ( 0 0 0 ! (! A # 0 ( Koriftu Bele # 70 Wetera (! (! 0 # # Konsore Abela
# 0 45 Resa Borehole (Well)
# A Chefe (!
#
# Chefa A
# ! #
# (! ( rht #
# 0 Tulu
#
# 70 Total depth [mbgl] Koye #
(! # # Vol Geduda
# (!
Delbo # 203 0 68 45
(! # A #
# #
# rh ob 42 # 106.6 94.7 A
# A Specific capacity [l/min/m] Static water level [m]
# A Bokore
# !
# 78.3 0 ( (! #
#
# rb # 133 # Haro 51.6 50.6 Morocho
# Wirancha A (! Shifa Draw down [m] #
7 # rh 2.9 Midre 7
# Bedesa Wacho Leku Gorche
# 60 # ! ! (! 60
!. 60 ( ( Genet !. 60 #
# rh 40 52 Hebeno !@ Sodo # (!
(! Gebre
!. # 0 7.A1 17 JICA Well # A A Morke
Kiristos (!
rh # rb 0 0
# rb Negele # Hogiso (!
176 ba (! # 46 Bedicho
(! 0 47 # Pm Derara 64 30
A (! 44 17 Gere 180 # A TEM Beklo 14 0 0 8 Telamo
0 0 13.5 # 0 AA15.5 A Honsota Senyo A G 0 0 Kontise (! (! 50.9 # ob 0 40 (! Survey Point of Transient-phenomenon 13A6 76.3 Dula Dema (! # (! ^_ rh G 0 A 16 0 A 33.1 # Chelko W 0 (! (or Time-domain) Electromagnetic Exploration Method 15.9 # # rh # # rh # Chume Gulgu#la (! (! # G 120 # # G 5.7 9.8 # G A G Deyu # 69.9 (! # G Gerbe rh 111 # 12.9 5.7 Terura # A ob Hurufa (! 7 # 1.9 rb Moto (!rh 7 # Naramo Desta 50 52 (! 50 Gesuba # 50 rb 50 Boro 0 0 rh Dela (! A # (! G Kawo Geology !. (! 0 # # Pm Ela
#
86 # Pm K
G # o Ras Megenamo
0 0 G r rh (! (!
A # # c Holocene
0 # # h Desta i
# s Jida
rh Vol !
# h Ber ( # a 250 Yirga # (! Al # BH4 !. # 0 A!@ 0 Alluvium; Fine sand - mud # Alem # # Vol 0 Kokosa Hora Diki Humbo !. (! (! !. Q Gesuba (! Bula Unclassified Fluvial Deposits; Sandy gravel-mud (! 141 0 0.5 Ararso A Bera (!
G Vol 8.6 Pm lac2
A rh Chale
! m Bulbla Lacstrine Deposits; Lake deposits such as gravel, sand and mud
!. G (
Tebela e Sasemo
G s 7 a Dela Arbe 7 40 Pm 40 rh (! 40 Gona 40 Pm G G !. Corbetti Pumice Flow & Fall Deposits; Pumice falls and pumice flow deposits Pgs G rh rb Wicho Ngm (! rh G Vol rb rh 134 Corbetti Rhyolitic Volcanics; Rhyolite lava flows and Obsidian lava flows G 10.5 A 62 Bura (! Galcha 28.6 (! Shiko rb rh G BH1 150 (! Butajira Recent Basalt; Basalt lavas and reddish brown basaltic scoria u 123 !@ 47.4 r A
a rb 0
c Pm
G G
h W tb lac1
i 123
a Pm d
a Meki Lacustrine Deposits; Lake deposits such as poorly-sorted gravel, sand, pumice, tuff, and volcanic sand
G G rh b 0 A 22.3 o 24.7 0
Pm 0 A 85.2 G
rh rh a l
3.5 o rb rh K G Pm F Pleistocene 7 7 Pm ' Bochesa 30 30 Pm !. Aleta 30 (! 30 Y Wendo Langano Poorly Welded Pumiceous Pyroclastics; Yellowish white rhyolitic pumice tuff Pgs Al Chuko G (! Alo G (! ob e Pm g Pm Kulumusa Highly Welded Tuff; Rhyolitic to andestic welded tuff n Pgs G o Pm B ob Pm Pm 0 W 0 A 39.1 Ketar River Acidic Volcanic Sedimentary Rocks; Rhyolitic tuffs and pumice tuffs 17.5 Yelewit 20 30 40 50 60 70 80 90 00 10 20 30 40 Teticha (! 77 50 60 70 80 90 00 10 Mese Pm 85.5 Birhan (! 0 17.4 1724 55.3 (seda) A G rb A (! 0 6.3 0 1.7 Senteriya Gonde Strongly Green Welded Tuff; Rhyolitic to andestic welded tuff rh (! 26.7 12.4 0 0 94.7 0 A Pgs A 15 19.8 6.2 Bona 1285m 78.3 0 50.6 A A 14.3 Kebalenka tb 2.9 G 43 (! Gocho 0 12.4 Olonso Daye Adami Tulu Basaltic Pyroclastics; Basaltic tuff breccias and lapilli tuffs (! A (!
7 42 0 Keka 7
0 (!
G 5 9.2 20 i 20 g
e A A 20 s 20 Werancha a 34 10.1 L. Abaya Teferi A 9 (! Bonsa ba Kela 23.9 Ogolche Pleistocene Basalt; Massive basalt lavas (! Hagere Ware (! Al Selam lake Selam !. Lekansho Lacustrine Deposits; Lake deposits such as sand stone and alternate layer Pgl Kebado Ber (! !. Zefne Kebado !. !. 80 0 A 11.5 19.1 Plio-Pleistocene Wajifo ba (! Pm Abera Bedesa (! rh (! Pm ba Gademotta Rhyolite; Rhyolite lava flows and rhyolitic tuffs W Chileshe (! G 0 N2b
G 0 0 62 Chebe N2b Basalt; Basalt lavas and basaltic pyroclastics
7 AA (! 7
0 a r 0 a 10 127 D 10 10 0 A 0 0.5 10 Q 24.1 A NQs 37.5A !. 4 rh 35.9 NQs Rhyolite; Rhyolitic tuffs rh Pm Dila 40.5 Andida (! Pgs 0 0 Pm A 0 Pliocene Q rh rht tb Mejo N1_2n Rhyolitic Volcanics; Plagiocrase rhyolite tuff and rhyolite lava flows containing obsidian Pgs G Chichu (! (! Chebicha 53 (! Bore N1_2n Ezo 0 A 0 !. N1_2n Rhyolitic Tuff; Plagiocrase rhyolitic tuff, pumice tuff and crystal tuff ! M.Abaya-1 ( Pm 0 ^_ G !. W N1n Pgs Pgl Guanguwa N1n Basalt; Anchar Basalt 7 126 7 00 Birbir 00 0 A 40.6 49.5 00 00 Mariyam 0 28.4 0 A 0 N1ar
(! 45
0 12.4 a l 0
Pgs 0 0 A N1ar Rhyolite; Rhyolite Pgs A 0 a Sokicha
(! Zada Pgs 0 S !. 0 Has Bule (! 0 A 5 !. 0 Miocene Birbir Pgs Koti (!52.5 Pgs !. 55.5 Wulo 0 A 0 0 A 0 Ngs 0 Kode Adis Kofe (! 0 Sharenga Rhyolite; Rhyolite piles and necks (! 31.5 Hamus 0 0 0 Gebeya 52.5 A 0 (! 44.8 36.8 88.5 a A 0 30.1 8.4 0 0 37.5 0 0 A Ngu
m A A
0 30 0 0 Anole o 0 Meho 0 A 0 0 (! Upper Basalt; Porous basalt lavas (! 0 0 Sokicha 0 5.4 K 45.2 56 A (! A (! 0 A Ilacha Chencha Pgs 1.6A 12.1 0 0 !. 0 0 Resa Ngm Ngb Pgl Bekero (! 9 5.4 (! Holjo Beyana Tuff; Lapilli tuff with minor laminated tuff Dita A (! 6 7.4 Girja 6 90 Pgl 90 90 (! 90 Ngm Lekicha Halemo ! (! Ngm 50 ( Middle Basalt; Porphyritic basalt lavas 0 A 0 5.9 Pgs 0 A Pgs 1.2 Repe Pgs Pgs Ngm (! Yirba
a Dumerso Eocene-Oligocene s Moda (! (!
r Bukisa (!
Pgs o 0 Q G Pgs Yir-Ch-2 Tulise 20.6 5 (! A Shole Welded Tuff; Densely-welded rhyolitic welded tuff ^_ 15.6(!
Ngm Pgs
Gulta G a 44.5 Dido n
a Shara i
l ! Pgl
Yarte Pgl (! (0 3.7 n Adame
(! e A
a
Pgl G 0 Lower Basalt; Porphyritic basalt lavas M 75.7
Pgl 0 0 A 48.5 Haro
0 36.8 A Kofele N ' A Pgs 0 Haru . (! Q Pgs 0 0 0 22.5 (! m 0 MESOZOIC 0 Pgl Pre 0 44.2 14.3 11.8 0 !. 0 A 12.1 (! A A Yirga Wachile 6 0 0 0A Foge 6.4 0 (! Pgl 0 60 82.8 80 0 80 80 Mes 0 A 5.4 0 0 Chefe Gerse 8 A 0 69.5 Melka Lole (! Adigrat Sandstone, Antaro Limestone; Sandstone, Shale and Limestone (! 6 0 A 0 0 (! 38°0'0"E A (! A A 39°0'0"E 3 000m. 3 3 3 3 3 3 3 4 A A 4 4 4 4 4 4 4 4 4 5 5 20 E 30 40 50 60 70 80 90 00 A 10 20 30 40 50 60 70 80 90 00 10 A PRECAMBRIAN Pre 0 AA10 20 40 Biotite Gneiss, Pegmatite; Biotite Gneiss, Granite, Biotite Metagranite A A A VERTICAL SCALE = 10 x HORIZONTALSCALE SCALE 1:250,000 A A km TRANSVERSE MERCATER PROJECTION AA A
A A A A A A A A A A M A M'
2,300 2,300 2,200 A B C 2,200 D E F H I J K L 2,100 BH2 Tora Tora-1 2,100 O P G M-Abaya-1 BH7 BH8 Meki W BH6 Bonkoya Alemtena BH5N BH1 2,000 W 2,000 1,900 Dijo R. 1,900 Ngm Meki R. Y 1,800 G 1,800 ob W lac2 W lac1 lac1 W rh W W G W W G Bilate R. 1,700 Pm G G 1,700 Pgs Y W rh rh G rh tb tb Birbir 1,600 ob tb 1,600 G ba W G rh G G rh rh tb Arba Minch 1,500 G W 1,500 G W Gidole tb rh rh Chamo Lale 1,400 tb rh 1,400 rh ba W Abaya Lale Ngm Ngm Kulfo R. Chamo Lale Q rh 1,300 rh 1,300 rht Bilate R. Pgl Q Gina R. Sile R. Ngs Al Pgs Q ba rh W Q Pgs Q Q Sego R. Q Pre 1,200 1,200 G Pgs Q Q G ba Pre 1,100 1,100 rh rh ba Pgl Q Pgl Pgl Pgl Pgl 1,000 1,000 G rh tb Pgl Pgl Pgl 0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 90,000 100,000 110,000 120,000 130,000 140,000 150,000 160,000 170,000 180,000 190,000 200,000 210,000 220,000 230,000 240,000 250,000 260,000 270,000 280,000 290,000 300,000 310,000 320,000 330,000 340,000 350,000 360,000 ・ The topographical map is based on Ethiopian Mapping Agency (EMA), 1979, 1994, 1995 and 1997 ・ Geological Map of the Ethiopian Rift,Ethiopian Institute of Geological Survey (EIGS), Ministry of Mines and Energy,1981 2,800 ・ Hydrogeology of the Lakes Region, Ethiopia (Lakes Ziway, Langano, Abiyata, Shalla and Awassa),Ethiopian Institute of Geological Survey (EIGS), Ministry of Mines and Energy,1982 D' F M N F' ・ Geological Map of Omo River Project area,Ethiopian Institute of Geological Survey (EIGS), Ministry of Mines and Energy,1983 D 2,700 ・ Geothermal Exploration Project Ethiopian Lakes District Rift, exploitation of Langano-Aluto geothermal resources, Feasibility report,Ministry of Mines and Energy, elc electroconsult, Italy,1986 2,600 P H ・ Geology of Agere Maryam Area,Geological Survey of Ethiopia (GSE),1994 BH4 ・ Hydrogeological, geophysical and engineering Geological Investigation of Yabelo Sheet,Geological Survey of Ethiopia (GSE),2000 2,500 BH5N ・ Hydrogeological and Engineering Geological Investigation of Chew Bahir Sheet,Geological Survey of Ethiopia (GSE),2000 Korchisha R. ・ Geological Map of the Ziway - Shala Lakes Basin,Dainelli et al., Department of Earth Sciences, University of Florence, Italy,2001 2,700 2,400 ・ Geothermal resource Exploration in Abaya and Tulu Moye Gedemisa geothermal Prospects, Main Ethiopian Rift,Geological Survey of Ethiopia (GSE),2002 N 2,600 T O Agemsa R. 2,300 ・ Hydrogeology and Engineering Geology of Awassa Lake Cachement,Geological Survey of Ethiopia (GSE),2003 Angecha M BH3 ・ Geology Yabelo MapSheet,Geological Survey of Ethiopia (GSE),2007 2,500 2,200 ・ Butajira-Ziway Area Development Study Project, Hydrogical Map,Ministry of Water Resources, Ethiopian Water Technology Center (EWTEC),2008 BH6 Hesa R. 2,100 ・ Geological map of Rift Valley Lakes Basin,Ministry of Water Resources, Halcrow and GIRDC,2008 2,400 G 2,300 W 2,000 Pgl Shashemene W Pm Gidabo R. 2,200 Pm 1,900 W G rht ob 2,100 Bilate R. ob 1,800 W G W Geological Map March 2012 G Kulito G Bilate R. G G W 1,700 W G G G 2,000 G W Y tb rh W G G W G W ba G G Vol rh W W 1,900 G G W 1,600 G G G G tb G Y Y Pm ob G G tb G ob G Y tb tb tb tb tb THE STUDY ON GROUNDWATER RESOURCES ASSESSMENT 1,800 G G 1,500 W G ba ba W tb G tb Y G tb rh W ob G rh rh tb 1,700 tb tb Y Y w 1,400 ba ba ba IN THE RIFT VALLEY LAKES BASIN G G rh rh tb rht rh 1,600 G tb ba G G tb 1,300 rh ba tb Ngs 1,500 rh rh 1,2 0 1,400 rh rh 1,100 JAPAN INTERNATIONAL COOPERATION AGENCY (JICA) 1,300 1,000