There is a water surplus in the north and west, and a water deficit in the south and east.

英国北部、西部雨量较多，可是南部、东部有所缺乏。

youdao

Algae microorganisms in the water overpopulate because of the surplus nitrogen.

VOA: special.2009.07.28

The project uses non-conventional water sources for irrigation, including desalinated water surplus and treated wastewater.

UNESCO: MEDIA SERVICES

The pipes, which will bring surplus water from the Dorset water treatment plant into the county, were given planning permission in East Dorset and North Dorset in March.

BBC: Water pipeline approved between Dorset and Wiltshire

The committee were keen to know why Scottish Water was in a position of surplus reduction in cash terms.

BBC: Infrastructure and Capital Investment Committee 2