Factors considered when allocating funding among WAUs requesting assistance include the current state of the irrigation channels, the proposed rehabilitation work, the anticipated production increase and the management capability of the applicant. Over the six years 2005-10, the JITUT and JIDES programmes have supported the rehabilitation of farm level channels irrigating 433 137 and 276 819 ha respectively. The poor condition of the existing network and the lack of new development means irrigation is providing less and less benefit for agriculture. Only half of the current irrigation system is considered to be in good condition, with about one-third being medium to heavily damaged and in need of rehabilitation (Table 2.10). By comparison, 78% of the network was in good condition in 1999, with only 2% heavily damaged. Factors contributing to the deterioration include the lack of maintenance across all levels of the system, forest destruction and sedimentation, and natural disasters (Azdan, 2011).