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Waikanae River: Difference between revisions

Coordinates: 40°52′28″S 174°59′59″E / 40.87455°S 174.99985°E / -40.87455; 174.99985
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{{Citations missing|date=March 2007}}
{{Use New Zealand English|date=April 2024}}
{{Use dmy dates|date=July 2019}}
'''Waikanae River''' is located on the [[Kapiti Coast]] in the [[North Island]] of [[New Zealand]].
{{More citations needed|date=March 2007}}
{{Infobox river
| name = Waikanae River
| image = Waikanae_River.jpg
| image_size = 250px
| image_caption = Waikanae River flowing towards sea
| map = {{Maplink|frame=yes|type=line|plain=yes|zoom=10|frame-align=center|frame-width=270|frame-height=270|stroke-color=#0000ff|stroke-width=2}}
| map_size =
| map_caption = Route of the Waikanae River
| map_alt =
| pushpin_map = New Zealand#New Zealand North Island
| pushpin_map_size = 270px
| pushpin_map_caption = Mouth of the Waikanae River
| pushpin_map_alt =
| source1 =
| source1_location = [[Tararua Range]]
| source1_coordinates = {{coord|-40.84012|175.13521|type:river_region:NZ|display=inline}}
| source1_elevation =
| mouth_location = [[Rauoterangi Channel]]
| mouth_elevation =
| mouth_coordinates = {{coord|-40.87455|174.99985|region:NZ|format=dms|display=inline,title}}
| subdivision_type1 = Country
| subdivision_name1 = New Zealand
| length =
| discharge1_avg =
| basin_size =
| progression = '''Waikanae River''' → [[Rauoterangi Channel]] → [[South Taranaki Bight]] → [[Tasman Sea]]
| tributaries_left = [[Ngatiawa River]], [[Rangiora River]], [[Reikorangi Stream]], [[Maungakōtukutuku Stream]], Muaupoko Stream
| tributaries_right = Kapakapanui Stream
| waterfalls =
| bridges = Nimmo Street Bridge, Otaihanga Suspension Bridge
| basin_landmarks = [[Reikorangi]], [[Waikanae]], Waimanu Lagoon
}}
'''Waikanae River''' is located on the [[Kāpiti Coast]] in the [[North Island]] of [[New Zealand]].


==Description==
The '''river drains the western flanks of the [[Tararua Range|Tararua Ranges]] around [[Reikorangi'']] and the [[Akatarawa Valley]], then passes to the south of the town of [[Waikanae]] before entering the [[Tasman Sea]] at Waikanae Beach. Tributaries include the [[Maungakotukutuku Stream]], [[Ngatiawa''' ''Italic text''River]], and [[Reikorangi Stream]]. The [[estuary]] of the river is a significant reserve providing <sub>shelter and habitat for local and migratory seabirds.
[[File:WaikanaeRiverEnteringTasman.JPG|thumb|left|Waikanae River entering Tasman Sea at Waikanae Beach]]


The river drains the western flanks of the [[Tararua Range]]s around [[Reikorangi]] and the [[Akatarawa Valley]], then passes to the south of the town of [[Waikanae]] to the north of the river and Otaihanga/ Paraparaumu to the south before entering the [[Tasman Sea]] at Waikanae – Paraparaumu Beach. Tributaries include the [[Maungakōtukutuku Stream]], [[Ngatiawa River]], and [[Reikorangi Stream]]. The [[estuary]] of the river is a significant reserve providing shelter and habitat for local and migratory seabirds. It also provides a major recreational location, both for residents and tourists. Walking and cycling tracks are present on both sides of the river, leading from Waikanae Beach and Otaihanga Domain to the old state highway bridge just south Waikanae.
[[Image:Waikanae_River.jpg|left|220px|thumb|Waikanae'' River flowing towards sea]]
[[Image:WaikanaeRiverEnteringTasman.JPG|none|200px|thumb|Waikanae River entering Tasman Sea at Waikanae Beach]]


The estuary of the Waikanae River is ever changing, with major and minor storms disrupting the banks and causing it to change shape. Prior to storms in 2016/17, the river seamlessly transitioned into the sea, but after storms, long sandbars and banks have caused the river to take an winding path to reach the Tasman Sea.{{Citation needed|date=September 2023}}


==History==
Water up to a maximum amount is taken out of the river as water supply for [[Waikanae]] and [[Paraparaumu]]. This sometimes leads to water restrictions if the river runs low, however in January [[2005]] the river burst its banks after heavy rain.

Water up to a maximum amount is taken out of the river as water supply for [[Waikanae]] and [[Paraparaumu]]. This sometimes leads to water restrictions if the river runs low, however in January 2005 the river burst its banks after heavy rain. The river has good water quality and high aquatic biodiversity, but there are occasional blooms of toxic [[cyanobacteria]] after prolonged periods of low flow during hot, dry weather.{{Citation needed|date=September 2023}}

There have been multiple instances in earlier years (2020, 2021) where the river back has burst, leading to several floods in the elevated areas south of the river. It came with heavy rainfall and heavy storms and cyclones in the area.{{Citation needed|date=September 2023}}

In December 2017 the part of the river near [[State Highway 1 (New Zealand)|State Highway 1]], a popular swimming location, was filled with [[Thumb-tack|thumb tacks]].<ref>{{Cite web |last=Maxwell |first=Joel |date=2017-12-12 |title=Kāpiti Coast swimming hole booby-trapped with hundreds of thumb tacks |url=https://www.stuff.co.nz/national/99775690/kpiti-coast-swimming-hole-boobytrapped-with-hundreds-of-thumb-tacks |access-date=2023-09-01 |website=Stuff |language=en}}</ref>

== Bridges ==
The first bridge was built about 1885 by the [[Wellington and Manawatu Railway Company]]. It was a 3-span timber truss bridge.<ref>{{Cite web|last=|first=|date=|title=Wellington and Manawatu Railway bridge over Waikanae river about 1885|url=https://natlib.govt.nz/records/22693186|access-date=2021-04-17|website=National Library of New Zealand|language=en}}</ref> In 1925 a fence of old rails was built to protect the bridge, backed by fifteen old square iron tanks (sent from [[East Town Railway Workshops|East Town]]), filled with river bed stones.<ref name=":23">{{Cite web|last=|first=|date=|title=Stations|url=http://railheritage.org.nz/assets/Heritage_listings.pdf|archive-url=|archive-date=|access-date=2020-08-10|website=NZR Rolling Stock Lists|language=en}}</ref> By 1938 the bridge had been rebuilt in steel and concrete.<ref>{{Cite web|title=Wellington-Napier Express crossing the bridge at Waikanae|url=http://nzetc.victoria.ac.nz/tm/scholarly/Gov12_12Rail-fig-Gov12_12Rail041a.html|access-date=2021-04-17|website=nzetc.victoria.ac.nz}}</ref> In 2017 a mural of a [[Sacred kingfisher|kingfisher]] was painted on to it.<ref>{{Cite news |date=25 January 2017 |title=Brothers' Waikanae rail bridge kingfisher mural replaces tagging |url=https://www.nzherald.co.nz/kapiti-news/news/brothers-waikanae-rail-bridge-kingfisher-mural-replaces-tagging/BPM5PA63DMWQBGW3RKIZKOEADE/ |access-date=15 December 2024 |work=Kapiti News}}</ref>

The next bridge was built nearby and opened in 1901. It was also 3 timber spans and {{Convert|247|ft|abbr=on}} long.<ref>{{Cite web|date=30 Sep 1901|title=WAIKANAE BRIDGE. THE OPENING CEREMONY. EVENING POST|url=https://paperspast.natlib.govt.nz/newspapers/EP19010930.2.49|access-date=2021-04-17|website=paperspast.natlib.govt.nz}}</ref>

In 1964 a bridge opened to the then State Highway 1.<ref>{{Cite web |date=2007 |title=Seismic assessment and retrofit of Waikanae and Pakuratahi river bridges |url=https://bulletin.nzsee.org.nz/index.php/bnzsee/article/view/17/7 |access-date=15 December 2024}}</ref> In 2024 a pedestrian and cyclist lane was added to it.<ref>{{Cite news |date=13 March 2024 |title=NZTA expects to open both lanes of Waikanae River bridge next month |url=https://www.nzherald.co.nz/kapiti-news/news/nzta-expects-to-open-both-lanes-of-waikanae-river-bridge-next-month/WU2K3TDNQJGBVL4IDVTPTMTFPE/ |access-date=15 December 2024 |work=Kapiti News}}</ref>

The latest bridge is on the [[Kāpiti Expressway]]. It is a single [[T-beam#Reinforced concrete T-beams|T-beam]], {{Convert|35|m|abbr=on}} above the river, with a {{Convert|39|m|abbr=on}} span.<ref>{{Cite web|date=Oct 2018|title=REFINEMENT ERA FOR PRESTRESSED BRIDGES IN NEW ZEALAND (2003 – TODAY)|url=https://cdn.ymaws.com/concretenz.org.nz/resource/resmgr/docs/conf/2018/s6_p2.pdf}}</ref>

There are also a few walking bridges built by the Kāpiti Coast District years ago on the river walking paths, such as the Otaihanga Domain Bridge.{{Citation needed|date=September 2023}}

==References==
{{Reflist}}

==External links==
*[https://nzetc.victoria.ac.nz/tm/scholarly/Cyc01Cycl-fig-Cyc01Cycl0556a.html Photo of the Waikanae River from The Cyclopedia of New Zealand c1897]
*[https://nzetc.victoria.ac.nz/tm/scholarly/Gov14_02Rail-fig-Gov14_02Rail025a.html Photo of the Waikanae rail and road bridges and express train on bridge c1939]
*[https://nzetc.victoria.ac.nz/tm/scholarly/Gov12_12Rail-fig-Gov12_12Rail041a.html Photo of the Waikanae rail and road bridges and express train leaving bridge c1938]
*[https://nzetc.victoria.ac.nz/tm/scholarly/Bio19Tuat02-fig-Bio19Tuat02_067a.html South bank of Waikanae River with strata identified]
* {{OSM|w|132793862}}

{{Kāpiti Coast District}}

[[Category:Rivers of the Wellington Region]]
[[Category:Kāpiti Coast District]]

Latest revision as of 02:20, 15 December 2024

Waikanae River
Waikanae River flowing towards sea
Map
Route of the Waikanae River
Waikanae River is located in New Zealand
Waikanae River
Mouth of the Waikanae River
Waikanae River is located in North Island
Waikanae River
Waikanae River (North Island)
Location
CountryNew Zealand
Physical characteristics
Source 
 • locationTararua Range
 • coordinates40°50′24″S 175°08′07″E / 40.84012°S 175.13521°E / -40.84012; 175.13521
Mouth 
 • location
Rauoterangi Channel
 • coordinates
40°52′28″S 174°59′59″E / 40.87455°S 174.99985°E / -40.87455; 174.99985
Basin features
ProgressionWaikanae RiverRauoterangi ChannelSouth Taranaki BightTasman Sea
LandmarksReikorangi, Waikanae, Waimanu Lagoon
Tributaries 
 • leftNgatiawa River, Rangiora River, Reikorangi Stream, Maungakōtukutuku Stream, Muaupoko Stream
 • rightKapakapanui Stream
BridgesNimmo Street Bridge, Otaihanga Suspension Bridge

Waikanae River is located on the Kāpiti Coast in the North Island of New Zealand.

Description

[edit]
Waikanae River entering Tasman Sea at Waikanae Beach

The river drains the western flanks of the Tararua Ranges around Reikorangi and the Akatarawa Valley, then passes to the south of the town of Waikanae to the north of the river and Otaihanga/ Paraparaumu to the south before entering the Tasman Sea at Waikanae – Paraparaumu Beach. Tributaries include the Maungakōtukutuku Stream, Ngatiawa River, and Reikorangi Stream. The estuary of the river is a significant reserve providing shelter and habitat for local and migratory seabirds. It also provides a major recreational location, both for residents and tourists. Walking and cycling tracks are present on both sides of the river, leading from Waikanae Beach and Otaihanga Domain to the old state highway bridge just south Waikanae.

The estuary of the Waikanae River is ever changing, with major and minor storms disrupting the banks and causing it to change shape. Prior to storms in 2016/17, the river seamlessly transitioned into the sea, but after storms, long sandbars and banks have caused the river to take an winding path to reach the Tasman Sea.[citation needed]

History

[edit]

Water up to a maximum amount is taken out of the river as water supply for Waikanae and Paraparaumu. This sometimes leads to water restrictions if the river runs low, however in January 2005 the river burst its banks after heavy rain. The river has good water quality and high aquatic biodiversity, but there are occasional blooms of toxic cyanobacteria after prolonged periods of low flow during hot, dry weather.[citation needed]

There have been multiple instances in earlier years (2020, 2021) where the river back has burst, leading to several floods in the elevated areas south of the river. It came with heavy rainfall and heavy storms and cyclones in the area.[citation needed]

In December 2017 the part of the river near State Highway 1, a popular swimming location, was filled with thumb tacks.[1]

Bridges

[edit]

The first bridge was built about 1885 by the Wellington and Manawatu Railway Company. It was a 3-span timber truss bridge.[2] In 1925 a fence of old rails was built to protect the bridge, backed by fifteen old square iron tanks (sent from East Town), filled with river bed stones.[3] By 1938 the bridge had been rebuilt in steel and concrete.[4] In 2017 a mural of a kingfisher was painted on to it.[5]

The next bridge was built nearby and opened in 1901. It was also 3 timber spans and 247 ft (75 m) long.[6]

In 1964 a bridge opened to the then State Highway 1.[7] In 2024 a pedestrian and cyclist lane was added to it.[8]

The latest bridge is on the Kāpiti Expressway. It is a single T-beam, 35 m (115 ft) above the river, with a 39 m (128 ft) span.[9]

There are also a few walking bridges built by the Kāpiti Coast District years ago on the river walking paths, such as the Otaihanga Domain Bridge.[citation needed]

References

[edit]
  1. ^ Maxwell, Joel (12 December 2017). "Kāpiti Coast swimming hole booby-trapped with hundreds of thumb tacks". Stuff. Retrieved 1 September 2023.
  2. ^ "Wellington and Manawatu Railway bridge over Waikanae river about 1885". National Library of New Zealand. Retrieved 17 April 2021.
  3. ^ "Stations" (PDF). NZR Rolling Stock Lists. Retrieved 10 August 2020.
  4. ^ "Wellington-Napier Express crossing the bridge at Waikanae". nzetc.victoria.ac.nz. Retrieved 17 April 2021.
  5. ^ "Brothers' Waikanae rail bridge kingfisher mural replaces tagging". Kapiti News. 25 January 2017. Retrieved 15 December 2024.
  6. ^ "WAIKANAE BRIDGE. THE OPENING CEREMONY. EVENING POST". paperspast.natlib.govt.nz. 30 September 1901. Retrieved 17 April 2021.
  7. ^ "Seismic assessment and retrofit of Waikanae and Pakuratahi river bridges". 2007. Retrieved 15 December 2024.
  8. ^ "NZTA expects to open both lanes of Waikanae River bridge next month". Kapiti News. 13 March 2024. Retrieved 15 December 2024.
  9. ^ "REFINEMENT ERA FOR PRESTRESSED BRIDGES IN NEW ZEALAND (2003 – TODAY)" (PDF). October 2018.
[edit]