factors affecting the management playing field for international lake basins in the Horn of Africa Dr Thomas J Ballatore Lake Basin Action Network LBAN Shiga Japan Prof Eric O ID: 526301
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Slide1
Comparative analysis of
factors affecting the management playing field forinternational lake basins in the Horn of Africa
Dr. Thomas J. BallatoreLake Basin Action Network (LBAN), Shiga, Japan
Prof. Eric O.
Odada
University of Nairobi, Nairobi, KenyaSlide2
The IGAD Region
Boundaries from GADM; background from Natural EarthSlide3
The IGAD Region
Eight CountriesBoundaries from GADMSlide4
The IGAD Region
2,073 Lakes and ReservoirsWaterbodies from SWBD (NASA) and GLWDSlide5
The IGAD Region
How many of these lakes are international?Step 1. Find the lakes that are intersected by shared IGAD borders
Boundaries from GADM, GMI, World BankSlide6
The IGAD Region
Four International Lakes
Victoria
Turkana
Al
Abyad
AbheSlide7
The IGAD Region
How many of the lakes are international?Step 2. Find the lakes whose drainage basins are intersected by shared IGAD bordersSlide8
The IGAD Region
International River BasinsBasins from Hydrosheds
(WWF)Slide9
The IGAD Region
Eleven (11) International drainage basins containing lakesBasins delineated from SRTM3 (NASA)Slide10
The IGAD Region
The eleven (11) international drainage basins containing lakesTotal Area = 1.1x106 km
2(21.5% of total IGAD area) Slide11
Factors affecting the
Lake Basin Management“Playing Field” Lake Area Drainage Basin Area
Drainage TypePhysical
Population Density
Spatial Distribution of Population
Number of Countries
Number of Linguistic Groups
Human
Spatial Distribution of Temp. and
Precip
.
Projected Climate Changes in Temp. and
Precip
.
ClimateSlide12
Use of Geospatial Data to estimate these factors
for the 11 international IGAD lake basinsSlide13
Khashm
al
Qirbah
Karum
Al
Abyad
Assal
Abhe
Turkana
Roseires
Victoria
Kyoga
Chew
Bahir
Fanwaamo
Lake
Area
7 km
2
72 km
2
100 km
2
224 km
2
7,441 km
2
311 km
2
64 km
2
0~86 km
2
0~341 km
2
2,776 km
2
66,866 km
2Slide14
Khashm
al
Qirbah
Karum
Al
Abyad
Assal
Abhe
Turkana
Roseires
Victoria
Kyoga
Chew
Bahir
Fanwaamo
Lake
Area
7 km
2
72 km
2
100 km
2
224 km
2
7,441 km
2
311 km
2
64 km
2
0~86 km
2
0~341 km
2
2,776 km
2
66,866 km
2Slide15
Khashm
al
Qirbah
Karum
Al
Abyad
Assal
Abhe
Turkana
Roseires
Victoria
Kyoga
Chew
Bahir
Fanwaamo
Basin
Area
438
km
2
100,351
km
2
18,863
km
2
188,472
km
2
148,449
km
2
94,030
km
2
2,861
km
2
229,558
km
2
18,556
km
2
321,533
km
2
263,568
km
2Slide16
Khashm
al
Qirbah
Karum
Al
Abyad
Assal
Abhe
Turkana
Roseires
Victoria
Kyoga
Chew
Bahir
Fanwaamo
Basin
Area
438
km
2
100,351
km
2
18,863
km
2
188,472
km
2
148,449
km
2
94,030
km
2
2,861
km
2
229,558
km
2
18,556
km
2
321,533
km
2
263,568
km
2Slide17
Khashm
al
Qirbah
Karum
Al
Abyad
Assal
Abhe
Turkana
Roseires
Victoria
Kyoga
Chew
Bahir
Fanwaamo
Drainage Type:
Exorheic
(Open) or
Endorheic
(Closed)
exorheic
exorheic
endorheic
exorheic
endorheic
endorheic
e
ndorheic
(ocean input)
exorheic
endorheic
exorheic
exorheicSlide18
Khashm
al
Qirbah
Karum
Al
Abyad
Assal
Abhe
Turkana
Roseires
Victoria
Kyoga
Chew
Bahir
Fanwaamo
Drainage Type:
Exorheic
(Open) or
Endorheic
(Closed)
exorheic
exorheic
endorheic
exorheic
endorheic
endorheic
e
ndorheic
(ocean input)
exorheic
endorheic
exorheic
exorheicSlide19
A quick look at Climate and Population
in the 11 international IGAD lakesSlide20
Lake
Karum Basinde Martonne
Aridity Indexde Martonne
Aridity Index calculated from 30 arc second Annual Average Temperature and Annual Average Precipitation
from
WorldClim
.
Index = P / (T +10) Slide21
Persons/km
2
Lake Karum BasinPopulation Density
Population from
LandScan
2008 (ORNL)Slide22
Khashm
al Qirbah Reservoir Basinde
Martonne Aridity IndexSlide23
Persons/km
2
Khashm al Qirbah Reservoir Basin
Population DensitySlide24
Lake Al
Abyad Basinde Martonne
Aridity IndexSlide25
Persons/km
2
Lake Al Abyad BasinPopulation DensitySlide26
Lake
Assal Basinde Martonne
Aridity IndexSlide27
Persons/km
2
Lake Assal BasinPopulation DensitySlide28
Lake
Abhe Basinde Martonne
Aridity IndexSlide29
Persons/km
2
Lake Abhe BasinPopulation DensitySlide30
Lake Turkana Basin
de Martonne Aridity IndexSlide31
Persons/km
2
Lake Turkana BasinPopulation DensitySlide32
Roseires
Reservoir Basinde Martonne Aridity IndexSlide33
Persons/km
2
Roseires Reservoir BasinPopulation DensitySlide34
Lake
Fanwaamo Basinde Martonne Aridity IndexSlide35
Persons/km
2
Lake Fanwaamo BasinPopulation DensitySlide36
Lake Chew
Bahir Basinde Martonne
Aridity IndexSlide37
Persons/km
2
Lake Chew Bahir BasinPopulation DensitySlide38
Lake Kyoga Basin
de Martonne Aridity IndexSlide39
Persons/km
2
Lake Kyoga BasinPopulation DensitySlide40
Lake Victoria Basin
de Martonne Aridity IndexSlide41
Persons/km
2
Lake Victoria BasinPopulation DensitySlide42
Summary TablesSlide43
Khashm
al
Qirbah
Karum
Al
Abyad
Assal
Abhe
Turkana
Roseires
Victoria
Kyoga
Chew
Bahir
Fanwaamo
Aridity:
Distribution
Ave. Aridity = 20
Ave. Aridity = 24
Ave. Aridity = 11
Ave. Aridity = 45
Ave. Aridity = 28
Ave. Aridity = 20
Ave. Aridity = 4
Ave. Aridity = 12
Ave. Aridity = 21
Ave. Aridity = 39
Ave. Aridity = 39
de
Martonne
Aridity IndexSlide44
Khashm
al
Qirbah
Karum
Al
Abyad
Assal
Abhe
Turkana
Roseires
Victoria
Kyoga
Chew
Bahir
Fanwaamo
Aridity:
Distribution
Ave. Aridity = 20
Ave. Aridity = 24
Ave. Aridity = 11
Ave. Aridity = 45
Ave. Aridity = 28
Ave. Aridity = 20
Ave. Aridity = 4
Ave. Aridity = 12
Ave. Aridity = 21
Ave. Aridity = 39
Ave. Aridity = 39
de
Martonne
Aridity IndexSlide45
Khashm
al
Qirbah
Karum
Al
Abyad
Assal
Abhe
Turkana
Roseires
Victoria
Kyoga
Chew
Bahir
Fanwaamo
Projected Change in Aridity
(2000-2050)
(HadGEM2-ES for RCP45 from CMIP5)
-2%
-3%
-
6%
-6%
-9%
-7%
+6%
-16%
-11%
-10%
-9%Slide46
Khashm
al
Qirbah
Karum
Al
Abyad
Assal
Abhe
Turkana
Roseires
Victoria
Kyoga
Chew
Bahir
Fanwaamo
Projected Change in Aridity
(
2000-2050)
(HadGEM2-ES for RCP45 from CMIP5)
-2%
-3%
-
6%
-6%
-9%
-7%
+6%
-16%
-11%
-10%
-9%Slide47
Khashm
al
Qirbah
Karum
Al
Abyad
Assal
Abhe
Turkana
Roseires
Victoria
Kyoga
Chew
Bahir
Fanwaamo
Population:
Density
11 persons/km
2
77 persons/km
2
31 persons/km
2
115 persons/km
2
75 persons/km
2
126 persons/km
2
3 persons/km
2
13 persons/km
2
51 persons/km
2
169 persons/km
2
167 persons/km
2
P
ersons/km
2Slide48
Khashm
al
Qirbah
Karum
Al
Abyad
Assal
Abhe
Turkana
Roseires
Victoria
Kyoga
Chew
Bahir
Fanwaamo
Population:
Density
11 persons/km
2
77 persons/km
2
31 persons/km
2
115 persons/km
2
75 persons/km
2
126 persons/km
2
3 persons/km
2
13 persons/km
2
51 persons/km
2
169 persons/km
2
167 persons/km
2
P
ersons/km
2Slide49
Khashm
al
Qirbah
Karum
Al
Abyad
Assal
Abhe
Turkana
Roseires
Victoria
Kyoga
Chew
Bahir
Fanwaamo
Population:
Distribution
11 persons/km
2
77 persons/km
2
31 persons/km
2
115 persons/km
2
75 persons/km
2
126 persons/km
2
3 persons/km
2
13 persons/km
2
51 persons/km
2
169 persons/km
2
167 persons/km
2
P
ersons/km
2Slide50
Khashm
al
Qirbah
Karum
Al
Abyad
Assal
Abhe
Turkana
Roseires
Victoria
Kyoga
Chew
Bahir
Fanwaamo
Countries:
Number and Distribution
2countries
3 countries
2 countries
2 countries
4
countries
3
countries
2 countries
3
countries
2 countries
5
countries
5
countriesSlide51
Khashm
al
Qirbah
Karum
Al
Abyad
Assal
Abhe
Turkana
Roseires
Victoria
Kyoga
Chew
Bahir
Fanwaamo
Countries:
Number and Distribution
2countries
3 countries
2 countries
2 countries
4
countries
3
countries
2 countries
3
countries
2 countries
5
countries
5
countriesSlide52
Khashm
al
Qirbah
Karum
Al
Abyad
Assal
Abhe
Turkana
Roseires
Victoria
Kyoga
Chew
Bahir
Fanwaamo
Languages:
Number and Distribution
(from
Ethnologue
(
GMI))
2 languages
8 languages
3 languages
15 languages
51 languages
8
languages
2 languages
16 languages
17 languages
62 languages
49 languagesSlide53
Khashm
al
Qirbah
Karum
Al
Abyad
Assal
Abhe
Turkana
Roseires
Victoria
Kyoga
Chew
Bahir
Fanwaamo
Languages:
Number and Distribution
(from
Ethnologue
(GMI))
2 languages
8 languages
3 languages
15 languages
51 languages
8
languages
2 languages
16 languages
17 languages
62 languages
49 languagesSlide54
Summary TableSlide55
Thank you for your kind attention!
Please send questions and/or comments to:Dr. Ballatore at ballatore@lakebasin.orgor
Prof. Odada at eodada@uonbi.ac.ke