Lake Grassmere

Lake Grassmere / Kapara Te Hau is a New Zealand lake in the northeastern South Island, near Cook Strait. The lake is used for the manufacturing of salt. Lake Grassmere, 25 miles south of Blenheim and six miles south of the mouth of the Awatere River, is a shallow lagoon protected from the open sea by using a unmarried barrier seaside protected through sand dunes. It is at the north-easterly extension of the Ward depression. Covering an area of 17 rectangular kilometres, it has no natural inflow and is liable to sturdy warm winds. Close to the ocean, it additionally has a very high salinity.

Because of these geographical characteristics, it is good for natural salt extraction. Grassmere has been divided into sun evaporation ponds. Seawater is pumped in, and moved between ponds over several months, growing in salinity with each successive evaporation length. As salinity will increase, crystallised salt bureaucracy and is extracted.