The Hangatahua River, alternatively known as the Stony River, is a river of the Taranaki Region of New Zealand. It is one of the larger of the numerous rivers and streams which drain the slopes of Mount Taranaki, receiving water from streams covering most of the northwest sector of the mountain. In addition it drains the southern flank of the Pouakai complex and the alpine Ahukawakawa Swamp.[1] The river's upper reaches lie within Egmont National Park.

Hangatahua (Stony) River
Hangatahua River (aka Stony River) seen in 1972
Map
Route of the Hangatahua River
Hangatahua River is located in New Zealand
Hangatahua River
Mouth of the Hangatahua River
Hangatahua River is located in North Island
Hangatahua River
Hangatahua River (North Island)
Location
CountryNew Zealand
Physical characteristics
Source 
 • locationAhukawakawa Swamp
 • coordinates39°15′19″S 174°02′23″E / 39.25515°S 174.03985°E / -39.25515; 174.03985
 • elevation2,100 m (6,900 ft)
Mouth 
 • location
Tasman Sea
 • coordinates
39°10′22″S 173°49′13″E / 39.1729°S 173.8202°E / -39.1729; 173.8202
 • elevation
0 metres (0 ft)
Length16 km (10 mi)
Basin features
ProgressionHangatahua RiverTasman Sea
Tributaries 
 • leftMinarapa Stream, Peters Stream, Upson Stream, Pyramid Stream, Turehu Stream, Maero Stream
 • rightCataract Stream, Paul Stream
BridgesHangatahua River Bridge

The Hangatahua River forms the boundary between New Plymouth District and South Taranaki District.[2]

The river was considered Taranaki's best trout fishery until severe erosion and land instability in the river's headwaters since 1997 caused high sediment loads.[3]

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References

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  1. ^ New Zealand Topographic Map Series sheet BJ29 - Mt Taranaki
  2. ^ "Ward boundaries map" (PDF). New Plymouth District Council. Retrieved 27 February 2011.
  3. ^ "Erosion Changes face of Mountain". Taranaki Daily News. 27 November 2010. Retrieved 27 February 2011.