Damage and Loss
More than 480 km of river dikes (total length of existing dikes is about 960 km) were partially damaged (see images in Annex 5), and there was severe damage to the main and secondary irrigation and drainage canals and the lower-order irrigation infrastructure linked to the river. This includes serious siltation of the main canal and distributaries (about 969km of irrigation canals and 400 km of drainage canals), breaches and siltation of smaller canals and water courses, and destruction of hydraulic and other water control and drainage infrastructure such as regulators, sluices and culverts. The damage, with related losses and needs for recovery and reconstruction are summarized in Table 23.
Over 11 percent - equally roughly 213,000 ha - of the present irrigation and drainage areas (total about 12.2 million rai – 2 million ha) in the 26 assessed provinces has been damaged. Indirect losses such as the disruption of irrigation supplies, siltation and water-logging of agricultural land, are covered in the agriculture sector in this assessment report.