Hello everyone, This is Gouri
Kalu River is the second largest
and third longest river in Sri Lanka while the catchment area is about 2,690 km2
and the total length is about 130 km. The river basin is subjected
to severe floods in almost every year as it lies entirely within the wet
zone of the country with average annual rainfall of about 4,000 mm. The upper basin
up to Rathnapura has steep gradients while the lower basin has mild topography.
Rathnapua and Kalutara areas are subjected to floods during south west monsoon
period.
 |
| Kalu River Basin (Nandalal, 2009) |
There were two severe floods occurred during 2003 and 2017 which
affect to both Rathnapura and kalutara. We did the questionnaire survey in
Rathnapura district. During our visit also the area is affected by rainfall and
there was a minor flood about a week before our visit. In some areas we could
see some remaining evidences of that minor flood.
 |
| Some low-lying areas are still under water |
 |
| Still the river level is high and carries mud water |
The district has severely affected by 2003 and 2017 floods
during south west monsoon. Some houses were entirely under floods while many
houses were severely affected and damaged.
 |
| Cracks on walls after floods |
 |
| Cracks on walls after floods |
We have conducted the questionnaire survey for about one week by going to each and every household to cover about a sample of 250 households.
