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The Piako River has two major stems: the first, and main, stem drains the northern Te Miro-Tahuroa hills, and the
Pakaroa Range. The dominant tributaries on the eastern slopes of these hills are the Piakonui and Piakoiti Streams. These streams, together with the smaller Toenepi Stream, converge just
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and opened in 1917. In the earliest days all transport or access to and from the land was either by sea, river or canal, but with the first roads being developed, it was essential that a bridge be built over the Piako River so it could become a main route between
Auckland and
265:. The scheme includes river management works, river diversions and channel enlargement, ponding systems, floodway improvements, stopbanks, floodgates and pumps. However, the river flooded again in 2017. A 2018 plan provides for strengthened stopbanks and diversion ponds.
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Road), with a total catchment area of approximately 1,440 square kilometres (560 sq mi). The river system is approximately 100 kilometres (62 mi) long, aligned in a north-south direction and occupies much of the central and western
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The river system is highly modified by intensive dairy farming and associated industry. Given this, the
Toenepi Stream - a small sub-catchment of the Piako River - has been extensively used to research the impact of
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229:, which starts near Piarere. The Waitoa River catchment drains the Hinuera Flats and broad southern Hauraki Plains, before converging with the Piako River in the large wetland known as the
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Landing. Since the 1930s, considerable flood protection measures have been undertaken on the Piako River and surrounding catchment, especially mainly north of Paeroa-Tahuna Road and the
454:
Basheer, G. (2002). Piako River Scheme Asset
Management Plan. Volume 1. Environment Waikato Internal Series 2002/08. Hamilton: Waikato Regional Council
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341:. Considerable work has gone into restoring the banks of the river, as in winter it is the direct cause of flooding through the low-lying
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Wilcock, R.J.; Monaghan, R.M.; Quinn, J.M.; Campbell, A.M.; Thorrold, B.S.; Duncan, M.J.; McGowan, A.W.; Betteridge, K. (2006).
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222:. As the Piako River progresses north, it is fed by numerous small streams draining the eastern slopes of the Hangawera Hills.
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and
Waikaka. A few years earlier plans had been made to upgrade the main highways in the area, partly with ratepayer funding.
390:"Land-use impacts and water quality targets in the intensive dairying catchment of the Toenepi Stream, New Zealand"
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The Piako River has an annual mean flow of 17 cubic metres per second (600 cu ft/s) (at Paeroa-
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Until 1930 the river was used to Tahuna and occasionally
Morrinsville to carry people and goods.
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south of
Kereone to become the Piako River. The western slopes are drained by the
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50-year protection from Piako River flooding with 0.3-metre (1 ft) freeboard
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100-year protection from tidal flooding with 0.5-metre (1.6 ft) freeboard,
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had a weeklly trip from
Auckland to Tahuna and back until 1927, calling at
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237:. The Upper Piako River catchment also drains the eastern aspects of the
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491:"Technical Report 2018/06 Piako River scheme: Service level review"
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Main river and tributary channel enlargement and clearing work,
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In 1906 work started on cutting the bends in the river below
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on water quality and develop improved farming practices.
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New
Zealand Journal of Marine and Freshwater Research
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The scheme provides the following levels of service:
367:"The Waikato Regional Flood Event of 9-20 July 1998"
174:, and on its journey it passes through the towns of
616:"Historic Heritage Inventory Ngatea Bridge Replica"
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465:"Evacuations in Waikato after stopbank breaches"
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150:is a lowland river system that drains into the
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332:The original Piako River Bridge was built in
590:"Extending main highways. Matamata Record"
170:. It is the dominant river system in the
512:"The broken link. Hauraki Plains Gazette"
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268:The scheme works includes the following:
202:in the south before discharging into the
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206:in the north, five kilometres west of
345:. From 1917 to 1952 the bridge had a
430:"THE PIAKO SWAMP. OHINEMURI GAZETTE"
140:1,400 km (540 sq mi)
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218:which joins the Piako River at
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538:"Shipping. New Zealand Herald"
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415:10.1080/00288330.2006.9517407
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253:Drainage and flood protection
53:Physical characteristics
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120: • elevation
84: • elevation
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328:Piako River Bridge (Ngatea)
320:, Hopai, Ngatea (Orchard),
241:through small tributaries.
108: • location
71: • location
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88:350 m (1,150 ft)
78:-Tahuroa Hills and Piarere
594:paperspast.natlib.govt.nz
568:paperspast.natlib.govt.nz
564:"Shipping. Auckland Star"
542:paperspast.natlib.govt.nz
516:paperspast.natlib.govt.nz
434:paperspast.natlib.govt.nz
275:170 km of stopbanks,
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623:Hauraki District Council
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349:to allow ships to pass.
132:100 km (62 mi)
225:The second stem is the
172:Matamata-Piako District
690:Hauraki Gulf catchment
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194:(or more broadly, the
680:Rivers of New Zealand
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162:. Together with the
124:0 m (0 ft)
18:River in New Zealand
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406:2006NZJMF..40..123W
303:near Tahuna in 1922
651:37.200°S 175.500°E
314:Northern Steamship
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263:Kopuatai Peat Dome
231:Kopuatai Peat Dome
216:Waitakaruru Stream
198:), extending from
675:Rivers of Waikato
596:. 16 January 1928
570:. 17 October 1910
469:Radio New Zealand
436:. 9 February 1906
278:59 floodgates and
247:intensive farming
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227:Waitoa River
224:
220:Morrinsville
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176:Morrinsville
164:Waihou River
156:North Island
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160:New Zealand
148:Piako River
47:New Zealand
24:Piako River
669:Categories
353:References
137:Basin size
440:6 January
308:Transport
642:175°30′E
600:14 April
574:13 April
548:14 April
522:14 April
475:16 April
339:Tauranga
322:Kerepehi
38:Location
639:37°12′S
402:Bibcode
318:Pipiroa
301:PS Kopu
259:Kaihere
200:Hinuera
154:on the
76:Te Miro
43:Country
373:29 May
334:Ngatea
235:Tahuna
208:Thames
187:Tahuna
180:Ngatea
129:Length
102:
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62:Source
619:(PDF)
494:(PDF)
98:Mouth
602:2024
576:2024
550:2024
524:2024
477:2017
442:2019
375:2015
178:and
146:The
410:doi
158:of
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
