Soil Erosion and Flood Risk Management

Evaluation of the resident interviews
The evaluation of the resident interviews gives an overview over the flood risks take place in Voi.
Beside this it is evident to know which kind of emergency measures are used in the settlements and
how the regeneration is implemented. The frequency of storm water events was expressed to in
average 3,5 times a year.
To analyze the results the flood damages of buildings and properties are subdivided in 5 different
damage categories: a) properties without damage; b) properties which are affected just in the
surrounding of the building; c) properties with flooded houses; d) properties with damaged houses and
e) properties with destroyed houses.
One of the results of the interviews and overview indicates that the damages in the lower part are
always more serious and at higher level than in the middle part (figure 15).
37,5%
Damages of houses and properties
in the Middle Part
12,5%
0,0%
12,5%
37,5%
Fig. 15: Different damages at properties
no damage
in surrounding
house flooded
house damaged
house destroyed
This information goes ahead with the statements of the residents referring maximum water level. The
maximum water level occur mostly in the middle and lower part (figure 16).The information derived
from the interviews about the maximum water level in the upper part shows, that the bank full
discharge is never reached. Therefore in this region the hazard is clearly asses as not that high as in the
upper and middle part of the investigated area.
Damages of houses and properties
in the Lower Part
0,0% 0,0%
27,3%
18,2%
54,5%
no damage
in surrounding
house flooded
house damaged
house destroyed
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