Northwestern Pacific margin Japan Volcanic region Sedimentary and volcanic rocks Variable from dry to humid Variable. Mountain belt of West Asia Turkey High relief folded mountains region Crystalline, volcanic and sedimentary rocks Dry Variable. Western Australia Australia Basement region Crystalline rock, sandstone, karstified limestone and alluvial sediments Arid to tropical humid (North) Limited to moderate resources. Eastern Australia Australia Sedimentary basin region Sedimentary alluvial formations Arid to semi-arid more humid towards the coast Moderate to high, major sandstone aquifer (Great Artesian Basin), Shallow alluvial sedimentary aquifers. Islands of the Pacific New Zealand Volcanic region Crystalline and sedimentary rocks (New Zealand) Humid Variable resources, some volcanic aquifer, and sedimentary (alluvial, marine) regions have significant resources. Proposed typology of groundwater economies by Shah et al. (