| Lake Rotongaro | |
|---|---|
  Lake Rotongaro | |
| Location | North Island |
| Coordinates | 37°29′00″S 175°07′00″E / 37.48333°S 175.11667°E |
| Type | riverine |
| Primary outflows | Rotongaro Canal |
| Catchment area | 19.5 km2 (7.5 sq mi) |
| Basin countries | New Zealand |
| Max. length | 2.5 km (1.6 mi) |
| Max. width | 2.2 km (1.4 mi) |
| Surface area | 292 hectares (720 acres) (open water) |
| Max. depth | 3.3 metres (11 ft) |
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.[1] It is situated between the Waikato River and the larger Lake Whangape.
The lake was lowered by 2.33 ft (0.71 m) in 1925, by means of a 2.75 mi (4.43 km) x 18 ft (5.5 m) canal,[2] which drains into Lake Rotongaroiti, which then flows through the Rotongaro canal,[3] to drain into the Whangape Stream, just below Lake Whangape.[4]
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.[3]