Geoscience Reference
In-Depth Information
The following are the descriptions of the respective regions from which the dam data for
this study were collected. These are Dodoma, Shinyanga, Singida, Tabora, and Arusha
(Tables 2.2.1 & 2.2.2).
Dodoma region
1 Mambali
2.7
NA
1958
21500
1978
1075
2 Mabisilo
25
NA
1956
31500
1978
1431.8
3 Kakola
3.7
NA
0.202
1954
19700
1978
820.8
NA
4 Manolea
3
0.033
1956
15400
1978
700
5 Kasisi
3.2
NA
0.02
1968
7300
1978
730
6 Mbola
6.4
NA
0.016
1972
7500
1978
1250
7
I
gingwa
10
NA
0.20
1958
2800
1978
1400
8 Matumbuhi
16.8
59.74
0.31
1960
1978
1322.4
9
B
uigiri
10.3
35.26
0.48
1969
1978
1410
10
I
magi
2.2
NA
0.1695
1934
1971
950
11 Matumbulu
15
NA
0.333
1949
1962-74
1374.5
NA
12 Msalatu
8.5
0.42
1944
1974
1225.8
13 Kisongo
9.3
NA
0.1265
1969-71
1228
Shinyanga region
14
B
ubiki
11
2.75
0.35
1584
15
I
badakuli
10
4.9
0.37
1472
16 Malya
15
5.8
1.49
2011
17 Nguliati
12
3.35
0.49
1593
18 Sakwe
9
3.65
0.28
1357.4
Note: “NA“ and “blank“ imply No Any data.
Table 2.2.1. Sedimentation data of small dams in Dry climatic zone for regions of Dodoma
and Shinyanga
Dodoma region is characterized by long dry seasons (April to December) and short rainy
seasons (December to March). Mean annual rainfall in the area range from 500 to 600
mm/annum and potential evaporation ranges between 2000 to 2500 mm per annum
(Christiansson, 1981). The topography of the central semi arid Tanzania is characterized by
plains and scattered inselberg or ridge. The soils appear in catena sequence where the upper
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