T T

T

T

T

T

TTS-3

TTS-2

UHS-46

UHS-44

UHS-52UHS-48

JCS341

JCS339JCS338

JCS337

JCS336

JCS335

JCS329

JCS327

JCS326

JCS323

JCS321

JCS320

JCS294

JCS290

JCS280

JCS342

JCS333

JCS328

JCS324

JCS317

JCS316

JCS313

JCS303

JCS302

JCS296

JCS286

JCS285

TCS-14

TCS-13

JBH3

TBH-6

TBH-5

JBH246

JBH175

JBH129

TBH-74

OBH838

OBH839

OBH832

OBH831

OBH845

OBH846

OBH1495

OBH1471

OBH1530OBH1536

OBH1488

OBH1492

DW38

DW37

DW34

?0.63

0.630.04

0.260.04

0.320.08

1

2

3

4

5

Goto

JARA

GINA

GUBA

KORE

SOLE

Alaba

KORKE

IDELA

SHALO

ADARE

HANSE ABOSA

AYIMO

HURSA

KERSA

Abaro

SHUMBA

Tumura

WETERA

DENEBA

BURARA

DONCHA

BORERA

EBICHA

AWASHO

Dalecha

WERANSA

BERGAGE

JENGELA

HANGEGO

HAREBATE

ECHO EDO

GULBICHA

DIDA BOKE

DIDA DERA

DUBA CHEBI

MELGE WENDO

WENDO GENET

Faji

WETERA WENDO

Sole

BusaKike

DABICHO RIDGE

WEGE GULBICHA

Alelu

Wesha

KERARA FILICHA

Ilala (Ilanta)

Melka Oda

SHASHEMENE

Wendo Genet

Meti

Tutu

Gite

Meti

SukeHase

Laftu

Abiyu

Lango

Wesha

Werka

Agemsa

Godeti

Burara

Jengela

Melka Oda

Tutu Kerara

Denbi / Hesa

Denbi / Hesa

Tiliku Dedaba

Tinishu Dedaba

Cheleleka Lake

2140

1685

1684

1690

16871683

1746

1809

2580

2460

TEFALET

Toga

WERANSA RIDGE

Gomesho

Shenkora

Tikur Wiha

38°40'0"E

38°40'0"E

38°35'0"E

38°35'0"E

38°30'0"E

38°30'0"E

38°45'0"E

7°15'0

"N

7°10'0

"N

7°10'0

"N

7°5'0"N

7°5'0"N

7°0'0"N

445000

445000

446000

446000

447000

447000

448000

448000

449000

449000

450000

450000

451000

451000

452000

452000

453000

453000

454000

454000

455000

455000

456000

456000

457000

457000

458000

458000

459000

459000

460000

460000

461000

461000

462000

462000

463000

463000

464000

464000

465000

465000

466000

466000

467000

467000

468000

468000

469000

469000

470000

470000

471000

471000

472000

472000

774000

774000

775000

775000

776000

776000

777000

777000

778000

778000

779000

779000

780000

780000

781000

781000

782000

782000

783000

783000

784000

784000

785000

785000

786000

786000

787000

787000

788000

788000

789000

789000

790000

790000

791000

791000

792000

792000

793000

793000

794000

794000

795000

795000

796000

796000

797000

797000

798000

798000

799000

799000

800000

800000

801000

801000

LEGENDGROUNDWATER AND ROCKS

Formation consisting of a minor fissured aquifer with local and limited groundwater resources – Aquiclude. The formation consists of obsidian and pitchstone.

Extensive and moderately productive or locally developed and highly productive porous aquifers (T = 1.1–10 m2/d, q = 0.011–0.1 l/s.m, with spring and well yield Q = 0.51–5 l/s). The aquifers consist of Quaternary lacustrine and fluvial sediments and basaltic scoria.

Extensive and moderately productive fissured aquifer (T = 1.1–10 m2/d, q = 0.011–0.1 l/s.m, with spring and well yield Q = 0.51–5 l/s). The aquifers consist of ignimbrite – Hawasa rhyolite ignimbrite and Hawasa basalt and tuff.Extensive and moderately or locally developed and highly productive mixed porous and fissured aquifers (T = 1.1–10 m2/d, q = 0.011–0.1 l/s.m, with spring and well yield Q = 0.51–5 l/s). The aquifers consist of sequences of sedimentary, coherent volcanic rocks, pyroclastic rocks of post-caldera Central volcanic complexes, and pumiceous pyroclastics related to Corbetti ignimbrites.

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6

6

!6

!6

Ê

Ê

W

W

W

W

W

6

W

W

W

WWW

!W

!W!W

!W

Ê

Ê

Ê

ÊÊ

6

6 6 6

66

!6

!6

6

W

6

W

W6

W

!6!6

!6

)

Na-HCO3transitional

Na-HCO3basic

Ca-HCO3transitional

ZDW-24

ZHW-8

ZHW-6

ZHW-5

ZBH-8

ZBH-6

TDW-2

OBH833ZDW-27

TBH-70

TBH-69

high F

luorid

e

200

800

SW-3

JBH3

JCS68

JCS69

ZHS-6

ZHS-3

ZCS-4

ZDW-6

ZDW-5

ZDW-1ZBH-4

ZBH-3

JCS65

TBH-6

TBH-5

TDW-4

TTS-3

TTS-2

UHS-46

UHS-44UHS-52

ZCS-17ZCS-16

ZCS-12

ZCS-11ZCS-10

ZBH-50ZBH-49

TBH-74

TCS-14

TCS-13

HYDROCHEMICAL MAP

Rift Valley Lakes

L. Ziway

L. Shalla

L. Langano

L. Hawasa

L. Abijata

BilateLake Shalla

Lake Langano

Western Ziway Abijata

Lake Hawasa

EasternZiway

Omo Gibe

WabeShebelle

SCHEME OF BASINS AND SUB-BASINS

Shallow groundwater flow direction

Deep groundwater flow direction

1

2

3

4

5

6

TDS in mg/l The area where F content exceeds drinking water standards

Set of Geoscience Maps of Ethiopia at Scale 1 : 50,000Hydrogeological map of Shashemene subsheetEditor: J. ŠímaCollaborators: Kefale T., Webanchi F., Zewdu Y.Digital cartography: A. Orgoň, D. Čížek

SET OF GEOSCIENCE MAPS OF ETHIOPIA AT SCALE 1 : 50,000

1 0 1 2 3 4Kilometres

1 0 1 2Miles

Coordinate system:Blue numbers: longitude & latitudeBlack numbers: UTM - zone 37 in metersProjection: Transverse MercatorEllipsoid, Datum: Clarke 1880, AdindanTopography derived from Ethiopia 1 : 50,000 scale maps Ministry of Land Reform and Administration (Survey and Mapping Department)

Editor: Jiří ŠímaHYDROGEOLOGICAL MAP

Contour interval: 50 meters1 : 50,000

Subsheet 0738-D3 Shashemene

1 : 1,000,000

1 : 170,000

MAP SHEET INDEX1 : 250,000 1 : 50,000

SHASHEMENE

HOSAINANB37-2

LITHOLOGY

SPRINGS!( Spring with yield 0.005 - 0.05 l/s!( Spring with yield 0.05 - 0.5 l/s (with thermal water)

!( Spring with yield 0.5 - 5 l/s

!( Spring with yield greater than 5 l/s

20212223

T( )

24252627282930

Alluvial, eluvial colluvial and polygenetic sedimentBasalt, basaltic lapili-stoneIgnimbriteTrachyandesite

Rhyolite, rhyodacite

Basaltic scoria, pumice fall, tuff, blocky ignimbriteObsidian

MANMADE HYDROGEOLOGICAL FEATURES141516171819

C Dug well

ÌÈ Proposed drilling site

@ Borehole with yield 0.05 - 0.5 l/s

@ Borehole with yield 0.5 - 5 l/s

@ Borehole with yield greater than 5 l/s!D Borehole not tested / yield not known

.

CONCEPTUAL HYDROGEOLOGICAL MODEL

GEOLOGICAL INFORMATION

Normal fault obscuredNormal fault observed

Normal fault inferred

Lithological boundary31323334

6WÊ

!6 Hot springCold springWellSurface water

SAMPLING POINTS

SURFACE WATER AND HYDROGRAPHY

78

Climatic stationLake staff gauge

111213

Indefinite streamWatercourse

( )mean runoff in m3/sbasin area in km2 * 1000

0.260.04 Flow gauging station

! ! ! ! Main basin surface water divide! ! ! ! ! Sub-basin surface water divide 1st order

910

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