Heavy rain that lashed Alappuzha since Thursday evening inundated several low-lying areas in the district.
Officials said that three houses, two in Kuttanad taluk and one in Chengannur, were damaged in the rain on Saturday. A house was damaged in Karthikappally after a tree fell on them on Friday.
Floodwaters entered a large number of houses in Cherthala and Alappuzha towns as the Alappuzha-Cherthala canal and other channels breached their banks. Uprooted trees damaged electricity poles and snapped power lines.