The Sediment Transport Model and its Applications - Sediment Transport in Irrigation Canals: A New Approach - page 200

160

140

120

100

80

60

40

20

0

Figure 7.18. Changes in
concentration after 90 days
for an ideally and for a poorly
maintained canal according to
the Ackers-White predictor.

1000 2000 3000 4000 5000 6000 7000 8000 9000 10000

0

Distance (m)

C-act ideal C-eq ideal

C-act poor C-eq poor

12 281 m 3 over the full canal length. Figure 7.19 presents the sediment
depositions for both cases. The height of the sedimentation for the ideally
maintained canal is lower and its length is slightly longer (about 400 m)
than for the canal with no maintenance.

11.0

10.5

10.0

9.5

9.0

Figure 7.19. Changes in the bed
level from the original bed level
after 90 days for an ideally
maintained and for a poorly
maintained canal according to
the Ackers-White predictor.

8.5

2000 4000 6000 8000 10000

0

Distance (m)

Initial bed
Bed - ideal maintenance
Bed - no maintenance

7.8 CASE 6 MANAGEMENT ACTIVITIES

Management of an irrigation system comprises all the necessary operation
and maintenance activities to deliver water to the users at the correct right
time, at the right level and with the right amount. Each irrigation scheme is
operated in its own, often different way. The operation depends on various