LINDENHURST - The wintry storm that whipped across Long Island last night brought more flooding to waterlogged residents of the South Shore, some of whom are now dealing with floodwaters for the third time since Superstorm Sandy.

Streets and homes were flooded last night from Mastic Beach to Lindenhurst. Roadways in Islip looked more like canals after floodwaters rushed in with the high tides.

Experts say barrier island erosion from Sandy is the culprit. Ocean waves are now breaking over and rushing into several spots along the barrier island where there used to be tall dunes. Mastic Beach Mayor Bill Biondi says if the dunes are not repaired, storms big and small will flood low-lying parts of the village.

The damage has left hard-hit residents wondering whether they should bother to rebuild at all.