Lewis River (Canterbury)
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The Lewis River is a river in the Canterbury region of New Zealand. The valley of this river forms the southeastern approach to Lewis Pass; the river is thus adjacent to State Highway 7. The Lewis River is a tributary of the Boyle River. The Nina River flows into the Lewis River a few kilometres upstream from the confluence with the Boyle River.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> Land Information New Zealand lists the name of the river as "not official", i.e. the name is not confirmed by the New Zealand Geographic Board.<ref>Template:LINZ</ref> It was named for the surveyor Henry Lewis, who discoveredTemplate:Efn the pass in 1860 alongside his colleague Christopher Maling. Later in 1860, the river was named by Julius von Haast during his own expedition; von Haast became the brother-in-law of Lewis' daughter in 1866.<ref>Template:Cite book</ref>