Lake Rotongaro

Lake Rotongaro is located to the west of Ohinewai in the Waikato Region of New Zealand. It is a large shallow riverine lake, which links to the Waikato River. It is situated between the Waikato River and the larger Lake Whangape.

The lake was lowered by 2.33 ft in 1925, by means of a 2.75 mi x 18 ft canal, which drains into Lake Rotongaroiti, which then flows through the Rotongaro canal, to drain into the Whangape Stream, just below Lake Whangape.

The lake area is approximately 292 ha, with a max depth of 3.3 m. The catchment area is predominantly pastoral, with an estimated area of 1950 ha.

Etymology
In Māori, rotongaro means "hidden lake" (roto = lake, ngaro = hidden).