Curves for flood damage on crops

[gfdrr]

Curves for flood damage on crops

[stufraser1]

We developed curve crops in a few recent projects that could be used – and included in the RDL: R5 SubSaharan Africa (Cima Foundation) Central Asia (RED)

[matamadio]

I see the one in the CIMA R5 report:

For vulnerability assessment from floods in agriculture we followed a similar approach to
the one followed for buildings. For the shape of the curve several sources have been
compared on damage functions for agriculture: the curve used for agriculture damage in the
Netherlands (HIS-SSM; Kok et al., 2005), a study on Ho-Chi-Minh City, and a study from
South Africa by Du Plessis and Viljoen (1997). These curves are shown in the graphs in
Figure 5.46 below. The curves go up to 100% loss somewhere around 1.5-2 meters. This is
quite steep, but logical considering whole harvests are lost when the crops drown, for which
not too much water depth is necessary. Overall, the HIS-SSM curve seems to go quite
‘middle of the pack’, and is therefore used in for the flood damage to agriculture. The HISSSM curve is used in the loss computations.

Do we have those also as table? I can't see them in my copy of R5 data.

[stufraser1]

“Do we have those also as table? I can't see them in my copy of R5 data.” No, unfortunately not. Some simpler ones can be coded from that figure, others we’ll need to get original source. Would be worthwhile thoughto populate some of RDLS V schema in DDH.