The harbor filled with alluvial soil and now built upon.

Besides, the district has alluvial soil which is very fertile.

Alluvial soils exist in most parts of the command area.

They tend to be found in areas of deeply cracking, alluvial soils.

Above the gravel deposits are gray and brown alluvial soils.

The alluvial soil on which the city stood was frozen all year round but thawed a few feet down during the summer.

For the first time in a hundred years the abundant fertility of its black alluvial soils had failed.

However, it is mostly seen by streams on moist alluvial soils.

With much rich alluvial soil, Anson became an agricultural town.

Alluvial soils of river valleys are ideal for banana growing.