NZ Historic Weather Events Catalogue

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ModerateJuly 1951 North Island Flooding ( 1951-07-04 )

28-50 years

Heavy rain closed roads across the North Island due to flooding, slips and washouts.

North Island

FloodingFlooding at North Island
Duration:   4  days - Many roads were blocked or made dangerous and minor flooding occurred in the centre of the North Island on the 4th to the 7th as heavy rain driven by a strong north-easterly wind swept an area roughly from Whakatane to Taupo.
Comments:

Affected LifelineThe Rotorua-Taupo road was closed.

Affected LifelineThe Wairoa-Te Whaiti Road and the Desert Road was closed.

Affected LifelineTrains between Paeroa and Tauranga were cancelled on the 7th. Heavy rains brought down both sides of a deep cutting near Tauranga on to the line.

FogFog
Comments:

CommentThe worst fog of the year blanketed Auckland and the bulk of the West Coast from Auckland to New Plymouth for the greater part of the morning of the 5th. Fog was also thick in Marlborough Sounds.

Northland

FloodingFlooding at Northland
Comments:

Affected LifelineThe East Coast state highway from Mangonui was flooded on the morning of the 4th.

FloodingFlooding at Kaitaia
Map Location: -35.107541 173.248564
Comments:

ImpactSome flooding occurred in Kaitaia.

FogFog at Whenuapai
Map Location: -36.788052 174.613904
Comments:

Affected LifelineVisibility was limited to 200 yards due to fog on the morning of the 5th and no aircrafts were able to take of until 10am. Some flights were cancelled and others were delayed.

Auckland

Multi HazardMulti Hazard at Auckland
Comments:

ImpactStrong winds and rain swept the Auckland province on the 4th. There were no reports of damage and only isolated flooding occurred.

High Wind GustsHigh Wind / Gust at Mechanics Bay
Map Location: -36.84617 174.784607
Comments:

Peak Wind SpeedWind averaged 30 mph (48 km/hr) for most of the day on the 4th but two gusts of wind over 50 mph (80 km/hr) were reported at Mechanics Bay.

Waikato

LandslideLandslide at Awakino Gorge
Map Location: -38.665063 174.716871
Comments:

Affected LifelineThere was a slip in the Awakino Gorge on the state highway to New Plymouth.

FloodingFlooding at Hamilton
Map Location: -37.780815 175.272927
Comments:

Physical CharacteristicWaikato River rose 4 ft 6 in (1.37 m) above normal in Hamilton on the 6th.

FloodingFlooding at Maraetai
Map Location: -38.356113 175.746764
Comments:

DamageThe upper coffer dam at the Maraetai hydro-electric power site burst on the morning of the 6th under the weight of the flood swollen Waikato River, endangering the half-completed main dam and the power house which stands behind it. The Waikato River rose 25 ft (7.62 m) to burst the coffer dam which was built to divert the river into the diversion tunnel and allow the dam site to be pumped free of water. The water stopped rising however and the main construction was saved from serious damage. It was estimated to be a one in 50 year flood.

CommentThe river was swollen to between two and a half and three times its normal flow.

Heavy RainHeavy Rain at Taupo
Map Location: -38.69531 176.070758
Comments:

Physical CharacteristicTaupo recorded 3.25 in (8.26 cm) of rain from 12pm on the 4th to 4pm on the 5th.

Physical CharacteristicTaupo recorded 5.5 in (13.97 cm) of rain from the 4th to the 6th.

FloodingFlooding
Comments:

Affected LifelineLocal pumice roads were in a deplorable state and many cars had to be towed out of trouble on the National Park, Napier, Atiamuri and Rotorua roads.

Heavy RainHeavy Rain at Waihi
Map Location: -37.39414 175.820732
Comments:

Physical CharacteristicWaihi recorded 5.38 in (13.67 cm) of rain in 24 hours.

Bay of Plenty

Multi HazardMulti Hazard at Bay of Plenty
Comments:

CommentThere was heavy rain and a strong north easterly wind on the 5th of July 1951.

FloodingFlooding
Comments:

ImpactThere was flooding and road damage reported throughout parts of the district. There was much surface water on the Rangitaiki Plains.

Affected LifelineRoad communications throughout the Bay of Plenty was disrupted. Several state and main highways were impassable.

Affected LifelineThe State hydro-electric power line between Edgecumbe and Te Puke cut out on the night of the 5th. Consumers in the area between Gate Pa and Otamarakau, including Mount Maunganui were without electric power.

Damage CostThe damage to county roads amounted to £11,155 ($603,400 2010 dollars).

Damage CostThe damage to main highways amounted to £11,357 ($614,300 2010 dollars).

LandslideLandslide
Comments:

Affected LifelineSlips blocked roads in Opotiki and Whakatane and surfaces were damaged in Tauranga. The Tauranga-Rotorua direct road was blocked by several slips and a big slip occurred on the Oropi Road which was temporarily closed to traffic. There was a big slip on the Kaimai Mill Road.

Affected LifelineA slip on the Bluffs blocked the Te Teko-Galatea Road.

Heavy RainHeavy Rain at Edgecumbe
Map Location: -37.97688 176.97688
Comments:

Physical CharacteristicEdgecumbe recorded 3.78 in (9.60 cm) of rain in 24 hours on the 4th.

Physical CharacteristicEdgecumbe recorded 3.17 in (8.05 cm) of rain in 24 hours on the 5th.

FloodingFlooding
Comments:

Peak DischargeRangitaiki River had a peak discharge of 11,300 cusecs (320 cumecs) at Edgecumbe.

Heavy RainHeavy Rain at Kaingaroa Forest
Map Location: -38.411566 176.570546
Comments:

Physical CharacteristicKaingaroa recorded 2.84 in (7.21 cm) of rain in 24 hours on the 4th.

Physical CharacteristicKaingaroa recorded 3.50 in (8.89 cm) of rain in 24 hours on the 5th.

FloodingFlooding at Kaituna River
Map Location: -37.990163 176.344207
Comments:

Peak DischargeKaituna River had a peak discharge of 4900 cusecs (139 cumecs) at the state highway bridge.

LandslideLandslide at Matata
Map Location: -37.890434 176.75457
Comments:

Affected LifelineA portion of the Tauranga-Whakatane highway at Matata was impassable due to a slip. The Onepu-Matata Road was impassable for several hours.

FloodingFlooding at Mount Maunganui
Map Location: -37.64237 176.195739
Comments:

Affected LifelineWashouts occurred on the roads.

ImpactSeveral houses in the low-lying areas were under several inches of water.

FloodingFlooding at Ngongotaha
Map Location: -38.076778 176.218274
Comments:

EvacueesA few homes were evacuated on the night of the 5th and in at least three of them the water rose above the floor level.

Heavy RainHeavy Rain at Rotorua
Map Location: -38.140434 176.262282
Comments:

Physical CharacteristicRotorua recorded 3.68 in (9.35 cm) of rain in 24 hours on the 4th.

Physical CharacteristicRotorua recorded 3.31 in (8.41 cm) of rain in 24 hours on the 5th.

Physical CharacteristicRotorua recorded almost 5 in (12.7 cm) of rain between 9am on the 4th to 3pm on the 5th.

Physical CharacteristicWhakarewarewa recorded 3.66 in (9.30 cm) of rain in 24 hours on the 4th.

Physical CharacteristicWhakarewarewa recorded 3.15 in (8.00 cm) of rain in 24 hours on the 5th.

FloodingFlooding
Comments:

ImpactHomes were inundated in the Rotorua district and out building were washed away in the highest flood for 28 years.

Affected LifelineRailway lines were blocked by flood waters and slips. Train services between Rotorua and Frankton Junction were cancelled on the 6th.

Physical CharacteristicOn the main highway to Auckland, about 15 miles from Rotorua, water was up to 2 ft (0.61 m) deep.

Affected LifelineThe aerodrome was partially flooded and all flights were cancelled.

Damage CostTwo of Rotorua's scenic attractions suffered severe damage. Paradise Valley and Ataahua was closed. Flood waters washed away bridges in Paradise Valley and a pool of carp was lost. Sixteen foot bridges in the Ataahua Canyon were destroyed by the flood waters. The damage was estimated at over £1000 ($54,100 2010 dollars).

Heavy RainHeavy Rain at Tauranga
Map Location: -37.679532 176.173022
Comments:

Physical CharacteristicTauranga recorded 6.41 in (16.28 cm) of rain in 24 hours.

Physical CharacteristicTauranga recorded over 9 in (22.86 cm) of rain in 48 hours.

Multi HazardMulti Hazard
Comments:

Affected LifelinePractically every country road suffered minor slips and severe washouts.

Affected LifelineThe Tauranga-Mount Maunganui highway was impassable due to slips. Minor slips occurred near Hairini and a big slip at the seven mile hill from Tauranga.

FloodingFlooding
Comments:

ImpactIn parts of the business areas footpaths were under water and some shops and business premises were flooded.

Heavy RainHeavy Rain at Te Puke
Map Location: -37.779011 176.33425
Comments:

CommentThe rainfall in Te Puke was reported to be the heaviest in the district for 25 years.

Physical CharacteristicTe Puke recorded over 8 in (20.32 cm) of rain in 24 hours.

FloodingFlooding
Comments:

Affected LifelineRivers flooded over the roads in several places in the Te Puke district. All roads were in bad condition and the Rotorua-Tauranga main route via Te Puke was closed.

Stock DamageThere were serious stock losses in the Te Puke area. One farmer lost about 150 wethers.

Affected LifelineThe approaches to a railway bridge between Te Puke and Rangiuru were washed away.

Affected LifelineTe Puke was without power for 18 hours on the 6th due to flooding.

EvacueesTwo families were taken by boat from their homes which were threatened by the floods.

Heavy RainHeavy Rain at Te Ranga
Map Location: -37.900188 176.274519
Comments:

Physical CharacteristicTe Ranga recorded 8.82 in (22.40 cm) of rain in 24 hours on the 4th.

Physical CharacteristicTe Ranga recorded 7.69 in (19.53 cm) of rain in 24 hours on the 5th.

Multi HazardMulti Hazard at Whakatane
Map Location: -37.967356 176.992417
Comments:

CommentWinds reaching gale force accompained by driving rain swept the Whakatane district and the Rangitaiki Plains on the 4th and the 5th..

FloodingFlooding
Comments:

ImpactThere was minor flooding reported.

Affected LifelineAll highways leading to Whakatane were blocked.

LandslideLandslide
Comments:

Affected LifelineThe Whakatane-Opotiki highway blocked by a slip in the Waimana Gorge. The Rotorua-Whakatane highway was blocked by slips at the western end of Lake Rotoiti and also near Lake Rotoma.

Manawatu-Wanganui

FloodingFlooding at Taumarunui
Map Location: -38.880291 175.262369
Comments:

Affected LifelineThe main road south of Taumarunui to National Park was in very bad condition.

References

Cowie, C.A., Attwood, A.K. (1957) Floods in New Zealand 1920-1953, The Soil Conservation Control Council, Wellington, New Zealand
Hydrology Annual No.3 1955, Soil Conservation and River Control Council, Wellington, New Zealand
Headline: Many Slips And Washouts On Tauranga District Roads After Exceptionally Heavy Rainfall.
The Bay of Plenty Times, 6 July 1951.
Headline: Minor Flooding At Whakatane.
The Bay of Plenty Times, 6 July 1951.
Headline: Day of High Wind And rain, Isolated Flooding In North.
The New Zealand Herald, 5 July (Thursday) 1951.
Headline: Dense fog covers wide area, transport services affected.
The New Zealand Herald, 6 July (Friday) 1951.
Headline: Rotorua District Suffers, Roads Outlets Blocked.
The New Zealand Herald, 6 July (Friday) 1951.
Headline: Storm Sweeps Central North Island.
The New Zealand Herald, 6 July (Friday) 1951.
Headline: Water and Slips On Many Roads, Heavy Rain In Some Areas.
The New Zealand Herald, 6 July (Friday) 1951.
Headline: Flood Bursts Maraetai Coffer Dam, Main Construction Saved From Serious Damage.
The New Zealand Herald, 7 July (Saturday) 1951.
Headline: Water Invades Homes, Rotorua Damage, Roads and Railways Suffer.
The New Zealand Herald, 7 July (Saturday) 1951.
Headline: Rotorua Storm Damage.
The New Zealand Herald, 9 July (Monday) 1951.

ModerateJuly 1951 North Island Flooding ( 1951-07-04 )

28-50 years

Heavy rain closed roads across the North Island due to flooding, slips and washouts.

North Island

FloodingFlooding at North Island
Duration:   4  days - Many roads were blocked or made dangerous and minor flooding occurred in the centre of the North Island on the 4th to the 7th as heavy rain driven by a strong north-easterly wind swept an area roughly from Whakatane to Taupo.
Comments:

Affected LifelineThe Rotorua-Taupo road was closed.

Affected LifelineThe Wairoa-Te Whaiti Road and the Desert Road was closed.

Affected LifelineTrains between Paeroa and Tauranga were cancelled on the 7th. Heavy rains brought down both sides of a deep cutting near Tauranga on to the line.

FogFog
Comments:

CommentThe worst fog of the year blanketed Auckland and the bulk of the West Coast from Auckland to New Plymouth for the greater part of the morning of the 5th. Fog was also thick in Marlborough Sounds.

Northland

FloodingFlooding at Northland
Comments:

Affected LifelineThe East Coast state highway from Mangonui was flooded on the morning of the 4th.

FloodingFlooding at Kaitaia
Map Location: -35.107541 173.248564
Comments:

ImpactSome flooding occurred in Kaitaia.

FogFog at Whenuapai
Map Location: -36.788052 174.613904
Comments:

Affected LifelineVisibility was limited to 200 yards due to fog on the morning of the 5th and no aircrafts were able to take of until 10am. Some flights were cancelled and others were delayed.

Auckland

Multi HazardMulti Hazard at Auckland
Comments:

ImpactStrong winds and rain swept the Auckland province on the 4th. There were no reports of damage and only isolated flooding occurred.

High Wind GustsHigh Wind / Gust at Mechanics Bay
Map Location: -36.84617 174.784607
Comments:

Peak Wind SpeedWind averaged 30 mph (48 km/hr) for most of the day on the 4th but two gusts of wind over 50 mph (80 km/hr) were reported at Mechanics Bay.

Waikato

LandslideLandslide at Awakino Gorge
Map Location: -38.665063 174.716871
Comments:

Affected LifelineThere was a slip in the Awakino Gorge on the state highway to New Plymouth.

FloodingFlooding at Hamilton
Map Location: -37.780815 175.272927
Comments:

Physical CharacteristicWaikato River rose 4 ft 6 in (1.37 m) above normal in Hamilton on the 6th.

FloodingFlooding at Maraetai
Map Location: -38.356113 175.746764
Comments:

DamageThe upper coffer dam at the Maraetai hydro-electric power site burst on the morning of the 6th under the weight of the flood swollen Waikato River, endangering the half-completed main dam and the power house which stands behind it. The Waikato River rose 25 ft (7.62 m) to burst the coffer dam which was built to divert the river into the diversion tunnel and allow the dam site to be pumped free of water. The water stopped rising however and the main construction was saved from serious damage. It was estimated to be a one in 50 year flood.

CommentThe river was swollen to between two and a half and three times its normal flow.

Heavy RainHeavy Rain at Taupo
Map Location: -38.69531 176.070758
Comments:

Physical CharacteristicTaupo recorded 3.25 in (8.26 cm) of rain from 12pm on the 4th to 4pm on the 5th.

Physical CharacteristicTaupo recorded 5.5 in (13.97 cm) of rain from the 4th to the 6th.

FloodingFlooding
Comments:

Affected LifelineLocal pumice roads were in a deplorable state and many cars had to be towed out of trouble on the National Park, Napier, Atiamuri and Rotorua roads.

Heavy RainHeavy Rain at Waihi
Map Location: -37.39414 175.820732
Comments:

Physical CharacteristicWaihi recorded 5.38 in (13.67 cm) of rain in 24 hours.

Bay of Plenty

Multi HazardMulti Hazard at Bay of Plenty
Comments:

CommentThere was heavy rain and a strong north easterly wind on the 5th of July 1951.

FloodingFlooding
Comments:

ImpactThere was flooding and road damage reported throughout parts of the district. There was much surface water on the Rangitaiki Plains.

Affected LifelineRoad communications throughout the Bay of Plenty was disrupted. Several state and main highways were impassable.

Affected LifelineThe State hydro-electric power line between Edgecumbe and Te Puke cut out on the night of the 5th. Consumers in the area between Gate Pa and Otamarakau, including Mount Maunganui were without electric power.

Damage CostThe damage to county roads amounted to £11,155 ($603,400 2010 dollars).

Damage CostThe damage to main highways amounted to £11,357 ($614,300 2010 dollars).

LandslideLandslide
Comments:

Affected LifelineSlips blocked roads in Opotiki and Whakatane and surfaces were damaged in Tauranga. The Tauranga-Rotorua direct road was blocked by several slips and a big slip occurred on the Oropi Road which was temporarily closed to traffic. There was a big slip on the Kaimai Mill Road.

Affected LifelineA slip on the Bluffs blocked the Te Teko-Galatea Road.

Heavy RainHeavy Rain at Edgecumbe
Map Location: -37.97688 176.97688
Comments:

Physical CharacteristicEdgecumbe recorded 3.78 in (9.60 cm) of rain in 24 hours on the 4th.

Physical CharacteristicEdgecumbe recorded 3.17 in (8.05 cm) of rain in 24 hours on the 5th.

FloodingFlooding
Comments:

Peak DischargeRangitaiki River had a peak discharge of 11,300 cusecs (320 cumecs) at Edgecumbe.

Heavy RainHeavy Rain at Kaingaroa Forest
Map Location: -38.411566 176.570546
Comments:

Physical CharacteristicKaingaroa recorded 2.84 in (7.21 cm) of rain in 24 hours on the 4th.

Physical CharacteristicKaingaroa recorded 3.50 in (8.89 cm) of rain in 24 hours on the 5th.

FloodingFlooding at Kaituna River
Map Location: -37.990163 176.344207
Comments:

Peak DischargeKaituna River had a peak discharge of 4900 cusecs (139 cumecs) at the state highway bridge.

LandslideLandslide at Matata
Map Location: -37.890434 176.75457
Comments:

Affected LifelineA portion of the Tauranga-Whakatane highway at Matata was impassable due to a slip. The Onepu-Matata Road was impassable for several hours.

FloodingFlooding at Mount Maunganui
Map Location: -37.64237 176.195739
Comments:

Affected LifelineWashouts occurred on the roads.

ImpactSeveral houses in the low-lying areas were under several inches of water.

FloodingFlooding at Ngongotaha
Map Location: -38.076778 176.218274
Comments:

EvacueesA few homes were evacuated on the night of the 5th and in at least three of them the water rose above the floor level.

Heavy RainHeavy Rain at Rotorua
Map Location: -38.140434 176.262282
Comments:

Physical CharacteristicRotorua recorded 3.68 in (9.35 cm) of rain in 24 hours on the 4th.

Physical CharacteristicRotorua recorded 3.31 in (8.41 cm) of rain in 24 hours on the 5th.

Physical CharacteristicRotorua recorded almost 5 in (12.7 cm) of rain between 9am on the 4th to 3pm on the 5th.

Physical CharacteristicWhakarewarewa recorded 3.66 in (9.30 cm) of rain in 24 hours on the 4th.

Physical CharacteristicWhakarewarewa recorded 3.15 in (8.00 cm) of rain in 24 hours on the 5th.

FloodingFlooding
Comments:

ImpactHomes were inundated in the Rotorua district and out building were washed away in the highest flood for 28 years.

Affected LifelineRailway lines were blocked by flood waters and slips. Train services between Rotorua and Frankton Junction were cancelled on the 6th.

Physical CharacteristicOn the main highway to Auckland, about 15 miles from Rotorua, water was up to 2 ft (0.61 m) deep.

Affected LifelineThe aerodrome was partially flooded and all flights were cancelled.

Damage CostTwo of Rotorua's scenic attractions suffered severe damage. Paradise Valley and Ataahua was closed. Flood waters washed away bridges in Paradise Valley and a pool of carp was lost. Sixteen foot bridges in the Ataahua Canyon were destroyed by the flood waters. The damage was estimated at over £1000 ($54,100 2010 dollars).

Heavy RainHeavy Rain at Tauranga
Map Location: -37.679532 176.173022
Comments:

Physical CharacteristicTauranga recorded 6.41 in (16.28 cm) of rain in 24 hours.

Physical CharacteristicTauranga recorded over 9 in (22.86 cm) of rain in 48 hours.

Multi HazardMulti Hazard
Comments:

Affected LifelinePractically every country road suffered minor slips and severe washouts.

Affected LifelineThe Tauranga-Mount Maunganui highway was impassable due to slips. Minor slips occurred near Hairini and a big slip at the seven mile hill from Tauranga.

FloodingFlooding
Comments:

ImpactIn parts of the business areas footpaths were under water and some shops and business premises were flooded.

Heavy RainHeavy Rain at Te Puke
Map Location: -37.779011 176.33425
Comments:

CommentThe rainfall in Te Puke was reported to be the heaviest in the district for 25 years.

Physical CharacteristicTe Puke recorded over 8 in (20.32 cm) of rain in 24 hours.

FloodingFlooding
Comments:

Affected LifelineRivers flooded over the roads in several places in the Te Puke district. All roads were in bad condition and the Rotorua-Tauranga main route via Te Puke was closed.

Stock DamageThere were serious stock losses in the Te Puke area. One farmer lost about 150 wethers.

Affected LifelineThe approaches to a railway bridge between Te Puke and Rangiuru were washed away.

Affected LifelineTe Puke was without power for 18 hours on the 6th due to flooding.

EvacueesTwo families were taken by boat from their homes which were threatened by the floods.

Heavy RainHeavy Rain at Te Ranga
Map Location: -37.900188 176.274519
Comments:

Physical CharacteristicTe Ranga recorded 8.82 in (22.40 cm) of rain in 24 hours on the 4th.

Physical CharacteristicTe Ranga recorded 7.69 in (19.53 cm) of rain in 24 hours on the 5th.

Multi HazardMulti Hazard at Whakatane
Map Location: -37.967356 176.992417
Comments:

CommentWinds reaching gale force accompained by driving rain swept the Whakatane district and the Rangitaiki Plains on the 4th and the 5th..

FloodingFlooding
Comments:

ImpactThere was minor flooding reported.

Affected LifelineAll highways leading to Whakatane were blocked.

LandslideLandslide
Comments:

Affected LifelineThe Whakatane-Opotiki highway blocked by a slip in the Waimana Gorge. The Rotorua-Whakatane highway was blocked by slips at the western end of Lake Rotoiti and also near Lake Rotoma.

Manawatu-Wanganui

FloodingFlooding at Taumarunui
Map Location: -38.880291 175.262369
Comments:

Affected LifelineThe main road south of Taumarunui to National Park was in very bad condition.

References

Cowie, C.A., Attwood, A.K. (1957) Floods in New Zealand 1920-1953, The Soil Conservation Control Council, Wellington, New Zealand
Hydrology Annual No.3 1955, Soil Conservation and River Control Council, Wellington, New Zealand
Headline: Many Slips And Washouts On Tauranga District Roads After Exceptionally Heavy Rainfall.
The Bay of Plenty Times, 6 July 1951.
Headline: Minor Flooding At Whakatane.
The Bay of Plenty Times, 6 July 1951.
Headline: Day of High Wind And rain, Isolated Flooding In North.
The New Zealand Herald, 5 July (Thursday) 1951.
Headline: Dense fog covers wide area, transport services affected.
The New Zealand Herald, 6 July (Friday) 1951.
Headline: Rotorua District Suffers, Roads Outlets Blocked.
The New Zealand Herald, 6 July (Friday) 1951.
Headline: Storm Sweeps Central North Island.
The New Zealand Herald, 6 July (Friday) 1951.
Headline: Water and Slips On Many Roads, Heavy Rain In Some Areas.
The New Zealand Herald, 6 July (Friday) 1951.
Headline: Flood Bursts Maraetai Coffer Dam, Main Construction Saved From Serious Damage.
The New Zealand Herald, 7 July (Saturday) 1951.
Headline: Water Invades Homes, Rotorua Damage, Roads and Railways Suffer.
The New Zealand Herald, 7 July (Saturday) 1951.
Headline: Rotorua Storm Damage.
The New Zealand Herald, 9 July (Monday) 1951.