Inland water meshblocks are meshblocks containing lakes and rivers where the meshblock is water only.

When separating land and lakes the following guidelines apply: * If the lake is less than 9 square kilometres in size and is not used for business (for example a power station), or recreational use, or there are no persons living on the lake then the meshblock can remain part water part land. * If the lake is less than 9 square kilometres and there are businesses (for example a power station), or the lake is used for recreational purposes, or persons are living on the lake then the land and water must be separated into separate meshblocks. * All lakes greater than 9 square kilometres must be separated from land.