Agriculture Reference
In-Depth Information
Table 7.4: Government and private-led irrigated areas in the study area.
Government-led Irrigation (ha)
Total
Irrigated
Area
{A+B+C}
(ha)
Private-led
Irrigation
{C} (ha)
Year
Developed Irrigation
Areas (Small & Large
Reservoir Irrigation
Systems*)
Small
Reservoirs
Irrigated
Area {B}
Vea irrigated areas
ICOUR
Records
Satellite
Image {A}
1
950-1960
68
n/i
n/i
n/i
n/i
n/a
1
961-1970
128
n/i
n/i
n/i
n/i
n/a
1
971-1980
993
450
n/i
n/i
n/i
n/i
1
981-1990
1017
404
n/i
n/i
n/i
n/i
1
991-1995
1017
294
n/i
n/i
n/i
n/i
1
996-2000
1017
331
n/i
n/i
n/i
n/i
2
003
1017
377
n/i
n/i
n/i
n/i
2
005
1017
111
145
248
1076
1469
2
007
1017
340
312
185
1408
1905
2010
1017
350
345
164
1420
1929
n/i, represents no image
* obtained from records on irrigation development
The expansion of private-led irrigation systems in the study area could not
be established due to lack of data. Interviews conducted in the study area
have revealed that the spread of the private-led irrigation technologies began
in the mid 1990s. It would have been interesting if useable spot images could
have been obtained for this period. From the satellite image analysis an
average growth rate of 5.7%/a of private-led irrigation in the study area was
observed from 2005-2010. With regards to government-led irrigation
development, there were no new additions. Rather the area irrigated by small
reservoirs decreased, and this may be due to infrastructural challenges
associated with the small reservoirs as a result of age and lack of
maintenance. However, the Vea irrigation scheme which irrigated 17% of the
developed area in 2003 increased to about 41% in 2010. The irrigated area in
Vea observed from the image analysis, is comparable to the records of
ICOUR, albeit that the latter are slightly lower than what was observed by
the images. This may be due to the fact that ICOUR used information on
registered farmers for the season, which does not necessarily represent all
farmers in the scheme (from interviews the Vea management claimed that on
average only about 80% of farmers are registered). It should be noted,
however, that this is not reflected in Table 7.4, because results in Table 7.4
represent irrigated areas within the observation window which cuts off
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