Agriculture Reference
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ha), the Tono (2490 ha) and the Bontanga (450 ha). In the White Volta sub-
basin of Burkina Faso, the large-scale irrigation schemes developed include
the Bagre (2140 ha) and Sourou (2000 ha).
In this section two kinds of analysis are used in assessing the historical trend
of irrigation development in the basin. The first employs data on irrigation
development from literature and country reports. The second employs the
use of historical satellite images combined with ground-truthing to map out
irrigated areas in the study area from 2003 to present. The trend analysis is
limited to the three catchments, where detailed studies have been conducted
and quality satellite images were used for the analysis. The study assumes
that the trends experienced within the three catchments are similar to the
general trend in the White Volta sub-basin.
7.3.1 Data Analysis of Irrigation Development in
the study area
This section analyses the recorded and reported irrigation development in
the three catchments (Anayari, Atankwidi and Yarigatanga). Data is
obtained from research papers, project reports, the Ministry of Agriculture
and Ghana Irrigation Development Authority. Information on irrigation
development is collated to develop the trend of irrigation development in the
study area and also to deduce the area covered with irrigation over the years.
Table 7.1 Small and Large Reservoir Irrigation systems in the entire study
area
Catchment
Anayari
Atankwidi
Yarigatanga
Total
Small-
Reservoirs
Small-
Reservoirs
Small-
Reservoirs
Large-
Reservoir
Small-
Reservoirs
1951-1960
5
2
1
0
8
1961-1970
1
1
5
0
7
1971-1980
0
0
2
Vea scheme
2
1981-1990
0
3
0
0
3
1991-present
0
0
0
0
0
TOTAL
6
6
8
1
20
The records obtained provide information on the formally developed
irrigation systems such as small reservoirs, large reservoirs and dugouts.
Records from GIDA show that there are 31 small reservoirs, 1 large reservoir
and 23 dugouts developed in the study area (Figure 2.7). Out of the 31 small
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