NZ Historic Weather Events Catalog

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ModerateJanuary 2005 New Zealand Flooding ( 2005-01-05 )

10-80 years

Heavy rain caused flooding in Manawatu-Wanganui, Wellington, Tasman-Nelson and Otago. The hardest area hit as Wellington where hundreds of people had to be evacuated.

New Zealand

Multi HazardMulti Hazard at New Zealand
Comments:

CauseA moist northwesterly airstream and a quasi-stationary front within the airstream moved over the lower North Island. There were a complex series of lows spreading from the Tasman Sea over the South Island, preceded by the disturbed northwesterly flow.

Manawatu-Wanganui

Heavy RainHeavy Rain at Balance
Map Location: -40.399484 175.797286
Comments:

Physical Characteristic19.0 cm of rain fell in the Upper Mangahao River at Ballance.

Heavy RainHeavy Rain at Kakariki
Map Location: -40.571386 175.641031
Comments:

Physical Characteristic16.0 cm of rain fell in the Upper Mangahao River at Kakariki.

Heavy RainHeavy Rain at Makomako
Map Location: -40.457492 175.726561
Comments:

ImpactA truck driver was rescued from his vehicle after it plunged under the Nikau Road bridge near Makomako.

Heavy RainHeavy Rain at Feilding
Map Location: -40.218333 175.546479
Comments:

ImpactAbout 300 scouts at the national jamboree in Feilding spent the night of the 6th sleeping in stock pens, exhibition halls and the grandstand at Manfield Park after heavy rain left the grounds waterlogged.

Wellington

Multi HazardMulti Hazard at Wellington
Duration:   3  days - The storm lasted from the 5th to the 7th.
Comments:

CauseA north-easterly storm affected the western part of the Wellington region.

Insurance PaymentInsurance industry payouts for the event was $2,500,000 (in 2005).

Heavy RainHeavy Rain
Comments:

CommentHeavy rainfalls south over Akatarawa and Whakatikei hills.

CommentStorm produced significant rainfall totals over a short time period in many parts of the region such as the Tararua Range, Kapiti coast, parts of the Hutt Valley (western Hutt subcatchments) and the Orongorongo Range.

FloodingFlooding
Comments:

Property DamageProperties were flooded.

CommentThe flooding had a 25 year return period.

ImpactAreas affected were Horowhenua, Kapiti Coast, Hutt Valley and Golden Bay.

Affected LifelineState Highway 1 was closed due to flooding and the main trunk railway line was closed.

Damage CostHutt River rose to 25 year levels causing an estimated $450,000 (in 2005) damage to bank edges, stopbanks and trees.

Affected LifelineWaitohu Valley Road Bridge, to the west of Tararua Range, was washed out.

ImpactThere were flash floods along the Kaptiti Coast.

DamageSlips and flooding caused damage in some parts of the region.

CommentThe resulting floods were most significant in the Kapiti and Hutt catchments.

Heavy RainHeavy Rain at Oriwa
Map Location: -40.75234 175.34674
Comments:

Physical CharacteristicOriwa had a rainfall intensity which averaged 3.4 cm an hour.

Heavy RainHeavy Rain at Blue Gum Spur
Comments:

Physical CharacteristicOn the 5th, Blue Gum Spur recorded 10.2 cm of rain in four hours( which has a return period of 70 years).

Heavy RainHeavy Rain at Akatarawa River
Map Location: -41.04663 175.11649
Comments:

Physical CharacteristicWithin the Akatarawa catchment, Warwicks gauge recorded 9.0 cm of rain in four hours (which has a return period of 40 years).

FloodingFlooding
Comments:

CommentThe storm had a 25 year return period for lower parts of Akatarawa catchment and Mangaone catchment.

CommentThe Akatarawa River, north of Upper Hutt, experienced a 50-year flood.

Heavy RainHeavy Rain at Lower Hutt
Map Location: -41.216677 174.934068
Comments:

Physical CharacteristicLower Hutt recorded 8.0 cm of rain in 12 hours.

FloodingFlooding
Comments:

CommentThe Hutt River recorded a flood similar to the one in October 1998 (making it a 26 year flood).

Affected LifelineThere was some flooding of houses in Hathaway Ave and several road closures.

Heavy RainHeavy Rain at Tararua Range
Map Location: -40.903116 175.33038
Comments:

Physical CharacteristicThe Tararua Ranges recorded 30.0 cm of rain in 12 hours.

CommentThe highest rainfall totals occurred in the northern Tararua Range.

Heavy RainHeavy Rain at Otaki
Map Location: -40.750818 175.14738
Comments:

Physical CharacteristicOtaki recorded 23.0 cm of rain in 12 hours to 6am on the 6th, including 10.0 cm of rain in 3 hours.

Physical CharacteristicOtaki recorded 25.5 cm of rain in 24 hours.

Affected LifelineThere were widespread washouts from Otaki to Paekakariki.

FloodingFlooding
Comments:

CommentThe Otaki River had a magnitude one in 40 year flood.

Heavy RainHeavy Rain at Otaihanga
Map Location: -40.881088 175.016874
Comments:

ImpactHeavy rainfall in the ranges cause the Waikanae River to burst its banks on the 6th.

FloodingFlooding
Comments:

Physical CharacteristicMore than a metre of water swept through 23 houses at Otaihanga at about 3am on the 6th.

ImpactThere was 20cm of silt left on some properties after floodwaters receded.

Stock DamageOne farmer had 10 sheep lost due the floods.

Evacuees12 people were rescued from 18 homes which were flooded.

CommentOtaihanga residents said it was the worst flood since 1958.

Multi HazardMulti Hazard at Mt Atkinson
Map Location: -40.96139 175.276572
Comments:

ImpactA woman who was missing in the Tararua Range was found just before 1:30pm on the 5th on the Atkinson Ridge. She was heading for hypothermic-type conditions after battling gale force nor'westers, rain and low visibility to about 100 metres.

ImpactLow cloud prevented rescue teams from airlifting the woman tramper out of the ranges.

FloodingFlooding at Waikanae
Map Location: -40.866454 175.054994
Comments:

EvacueesAbout 700 people were evacuated to higher ground at El Rancho, the Waikanae Christian Holiday Park, when the Waikanae River flooded.

CommentWaikanae River experienced an 80 year flood.

Affected LifelineAkatarawa Rd, between Waikanae and Upper Hutt, was closed.

Heavy RainHeavy Rain at Reikorangi
Map Location: -40.902356 175.087326
Comments:

Physical CharacteristicAt the headwaters of the Waikanae River, at the top of the Akatarawa Hill Road, 12.4 cm of rain fell in 12 hours to 6am on the 6th.

FloodingFlooding at Paekakariki
Map Location: -40.982766 174.944483
Comments:

Affected LifelineState Highway 1 was flooded between Paekakariki and Waterfall Road, delaying motorists for up to three hours.

Tasman-Nelson

FloodingFlooding at Anatori River
Map Location: -40.700264 172.365403
Comments:

Evacuees19 campers along the Anatori River were evacuated after floods threatened their campsite on the 6th and 7th.

Otago

Heavy RainHeavy Rain at Otago
Comments:

CauseA weak northwest flow over the area produced high temperatures. Winds were light, leading to slow storm motions.

Physical CharacteristicAreas of Otago recorded 6.0cm of rain in one hour on the 7th.

Physical CharacteristicAreas of Otago recorded 8.0cm of rain in six hours on the 7th.

FloodingFlooding
Comments:

ImpactFlooding and landslides occured during localised high rainfall in south and west Otago.

Affected LifelineOne bridge was closed and several others were damaged.

DamageFlooding damaged roads, property and pastures.

Stock DamageThere were livestock losses.

Peak River FlowThe upper Pomahaka River in south Otago, north of Gore, reached a 10 year flood peak near midnight with an estimated flow of 500 cumecs.

CommentThere were flash floods in Western Otago and high river levels.

Heavy RainHeavy Rain at Tapanui
Map Location: -45.945409 169.268023
Comments:

Physical CharacteristicTapanui recorded 3.4cm of rain in 30 minutes on the 7th.

FloodingFlooding
Comments:

Affected LifelineState Highway 90 was closed between Gore and Tapanui due to flooding from the Pomahaka River.

Heavy RainHeavy Rain at Moa Flat
Map Location: -45.723237 169.306139
Comments:

Physical CharacteristicMoa Flat recorded 3.4cm of rain in 30 minutes to 5.30pm on the 7th (which has a return period of 130 years).

LightningLightning at Heriot
Map Location: -45.846905 169.27181
Comments:

CommentIn the Heriot Burn and Pomahaka area, there were severe thunderstorms.

Physical CharacteristicFarmers reported over 8.0cm of rain in six hours.

FloodingFlooding
Comments:

Stock DamageStock losses were reported in the Heriot Burn and Kelso area.

ImpactFarmers reported local streams were flash flooding, washing over roads and paddocks within 15 minutes of the downpours.

Physical CharacteristicThe depth of water that went through the golf course was reported to be at least 2 m. A wall of water came through in a space of 10-15 minutes.

ImpactAbout six houses were flooded.

FloodingFlooding at Ettrick
Map Location: -45.636095 169.371395
Comments:

ImpactThere was surface flooding in Ettrick.

LightningLightning at Leithen Glen
Map Location: -45.876869 169.138985
Comments:

CommentThe Otago Regional Council flow recorder site at Leithen Glen appeared to have been struck by lightning.

Heavy RainHeavy Rain
Comments:

Physical Characteristic3.4cm of rain was recorded in 30 minutes.

FloodingFlooding at Waitahuna
Map Location: -45.986063 169.747236
Comments:

Physical CharacteristicThe Waitahuna River reached an estimated 20 year flood level. It was greater than 59 cumecs before the Otago Regional Council flow recorder was inundated on the night of the 7th.

References

Insurance Councils, The Cost of Weather Loses, Claims History (Updated 2004).
Major weather events in New Zealand, FLOODS and HIGH RAINFALL, to 31st May 2006
Meteorological Society of New Zealand (Inc.) Newsletter 100, March 2005.
NZ Met Service. (2008). Meteorology of Extreme Rainfalls in New Zealand (Mark Pascoe, Ed.).
The 5-6 January 2005 storm in the Welllington region, Hydrology and meteorlogy, Laura Watts, January 2005
Headline: Kapiti siren 'might have scared people'.
The Dominion Post, January 6 2005.
Headline: Mud, sweat and fears after flood.
The Dominion Post, January 8 2005.
www.metservice, notable weather events.govt.nz
Headline: Missing woman found in ranges.
www.nzherald.co.nz, Source: NZPA, 5 January 2005.
Headline: Torrential rain brings flooding and misery.
www.nzherald.co.nz, Source: NZPA, 7 January 2005.
Headline: Storm overwhelms river measuring equipment.
www.nzherald.co.nz, Source: NZPA, 8 January 2005.
The 5-6 January 2005 storm in the Welllington region, Hydrology and meteorlogy, Laura Watts, January 2005
O:\RSKD102\RawData\Archives\Documentation\2005-01-5th-6th-7th New Zealand FloodingTable: Rainfall depths and estimated return periods at selected rainfall stations in the Wellington region.csv
The 5-6 January 2005 storm in the Welllington region, Hydrology and meteorlogy, Laura Watts, January 2005
O:\RSKD102\RawData\Archives\Documentation\2005-01-5th-6th-7th New Zealand FloodingTable: River flood peaks in the Wellington region.csv

ModerateJanuary 2005 New Zealand Flooding ( 2005-01-05 )

10-80 years

Heavy rain caused flooding in Manawatu-Wanganui, Wellington, Tasman-Nelson and Otago. The hardest area hit as Wellington where hundreds of people had to be evacuated.

New Zealand

Multi HazardMulti Hazard at New Zealand
Comments:

CauseA moist northwesterly airstream and a quasi-stationary front within the airstream moved over the lower North Island. There were a complex series of lows spreading from the Tasman Sea over the South Island, preceded by the disturbed northwesterly flow.

Manawatu-Wanganui

Heavy RainHeavy Rain at Balance
Map Location: -40.399484 175.797286
Comments:

Physical Characteristic19.0 cm of rain fell in the Upper Mangahao River at Ballance.

Heavy RainHeavy Rain at Kakariki
Map Location: -40.571386 175.641031
Comments:

Physical Characteristic16.0 cm of rain fell in the Upper Mangahao River at Kakariki.

Heavy RainHeavy Rain at Makomako
Map Location: -40.457492 175.726561
Comments:

ImpactA truck driver was rescued from his vehicle after it plunged under the Nikau Road bridge near Makomako.

Heavy RainHeavy Rain at Feilding
Map Location: -40.218333 175.546479
Comments:

ImpactAbout 300 scouts at the national jamboree in Feilding spent the night of the 6th sleeping in stock pens, exhibition halls and the grandstand at Manfield Park after heavy rain left the grounds waterlogged.

Wellington

Multi HazardMulti Hazard at Wellington
Duration:   3  days - The storm lasted from the 5th to the 7th.
Comments:

CauseA north-easterly storm affected the western part of the Wellington region.

Insurance PaymentInsurance industry payouts for the event was $2,500,000 (in 2005).

Heavy RainHeavy Rain
Comments:

CommentHeavy rainfalls south over Akatarawa and Whakatikei hills.

CommentStorm produced significant rainfall totals over a short time period in many parts of the region such as the Tararua Range, Kapiti coast, parts of the Hutt Valley (western Hutt subcatchments) and the Orongorongo Range.

FloodingFlooding
Comments:

Property DamageProperties were flooded.

CommentThe flooding had a 25 year return period.

ImpactAreas affected were Horowhenua, Kapiti Coast, Hutt Valley and Golden Bay.

Affected LifelineState Highway 1 was closed due to flooding and the main trunk railway line was closed.

Damage CostHutt River rose to 25 year levels causing an estimated $450,000 (in 2005) damage to bank edges, stopbanks and trees.

Affected LifelineWaitohu Valley Road Bridge, to the west of Tararua Range, was washed out.

ImpactThere were flash floods along the Kaptiti Coast.

DamageSlips and flooding caused damage in some parts of the region.

CommentThe resulting floods were most significant in the Kapiti and Hutt catchments.

Heavy RainHeavy Rain at Oriwa
Map Location: -40.75234 175.34674
Comments:

Physical CharacteristicOriwa had a rainfall intensity which averaged 3.4 cm an hour.

Heavy RainHeavy Rain at Blue Gum Spur
Comments:

Physical CharacteristicOn the 5th, Blue Gum Spur recorded 10.2 cm of rain in four hours( which has a return period of 70 years).

Heavy RainHeavy Rain at Akatarawa River
Map Location: -41.04663 175.11649
Comments:

Physical CharacteristicWithin the Akatarawa catchment, Warwicks gauge recorded 9.0 cm of rain in four hours (which has a return period of 40 years).

FloodingFlooding
Comments:

CommentThe storm had a 25 year return period for lower parts of Akatarawa catchment and Mangaone catchment.

CommentThe Akatarawa River, north of Upper Hutt, experienced a 50-year flood.

Heavy RainHeavy Rain at Lower Hutt
Map Location: -41.216677 174.934068
Comments:

Physical CharacteristicLower Hutt recorded 8.0 cm of rain in 12 hours.

FloodingFlooding
Comments:

CommentThe Hutt River recorded a flood similar to the one in October 1998 (making it a 26 year flood).

Affected LifelineThere was some flooding of houses in Hathaway Ave and several road closures.

Heavy RainHeavy Rain at Tararua Range
Map Location: -40.903116 175.33038
Comments:

Physical CharacteristicThe Tararua Ranges recorded 30.0 cm of rain in 12 hours.

CommentThe highest rainfall totals occurred in the northern Tararua Range.

Heavy RainHeavy Rain at Otaki
Map Location: -40.750818 175.14738
Comments:

Physical CharacteristicOtaki recorded 23.0 cm of rain in 12 hours to 6am on the 6th, including 10.0 cm of rain in 3 hours.

Physical CharacteristicOtaki recorded 25.5 cm of rain in 24 hours.

Affected LifelineThere were widespread washouts from Otaki to Paekakariki.

FloodingFlooding
Comments:

CommentThe Otaki River had a magnitude one in 40 year flood.

Heavy RainHeavy Rain at Otaihanga
Map Location: -40.881088 175.016874
Comments:

ImpactHeavy rainfall in the ranges cause the Waikanae River to burst its banks on the 6th.

FloodingFlooding
Comments:

Physical CharacteristicMore than a metre of water swept through 23 houses at Otaihanga at about 3am on the 6th.

ImpactThere was 20cm of silt left on some properties after floodwaters receded.

Stock DamageOne farmer had 10 sheep lost due the floods.

Evacuees12 people were rescued from 18 homes which were flooded.

CommentOtaihanga residents said it was the worst flood since 1958.

Multi HazardMulti Hazard at Mt Atkinson
Map Location: -40.96139 175.276572
Comments:

ImpactA woman who was missing in the Tararua Range was found just before 1:30pm on the 5th on the Atkinson Ridge. She was heading for hypothermic-type conditions after battling gale force nor'westers, rain and low visibility to about 100 metres.

ImpactLow cloud prevented rescue teams from airlifting the woman tramper out of the ranges.

FloodingFlooding at Waikanae
Map Location: -40.866454 175.054994
Comments:

EvacueesAbout 700 people were evacuated to higher ground at El Rancho, the Waikanae Christian Holiday Park, when the Waikanae River flooded.

CommentWaikanae River experienced an 80 year flood.

Affected LifelineAkatarawa Rd, between Waikanae and Upper Hutt, was closed.

Heavy RainHeavy Rain at Reikorangi
Map Location: -40.902356 175.087326
Comments:

Physical CharacteristicAt the headwaters of the Waikanae River, at the top of the Akatarawa Hill Road, 12.4 cm of rain fell in 12 hours to 6am on the 6th.

FloodingFlooding at Paekakariki
Map Location: -40.982766 174.944483
Comments:

Affected LifelineState Highway 1 was flooded between Paekakariki and Waterfall Road, delaying motorists for up to three hours.

Tasman-Nelson

FloodingFlooding at Anatori River
Map Location: -40.700264 172.365403
Comments:

Evacuees19 campers along the Anatori River were evacuated after floods threatened their campsite on the 6th and 7th.

Otago

Heavy RainHeavy Rain at Otago
Comments:

CauseA weak northwest flow over the area produced high temperatures. Winds were light, leading to slow storm motions.

Physical CharacteristicAreas of Otago recorded 6.0cm of rain in one hour on the 7th.

Physical CharacteristicAreas of Otago recorded 8.0cm of rain in six hours on the 7th.

FloodingFlooding
Comments:

ImpactFlooding and landslides occured during localised high rainfall in south and west Otago.

Affected LifelineOne bridge was closed and several others were damaged.

DamageFlooding damaged roads, property and pastures.

Stock DamageThere were livestock losses.

Peak River FlowThe upper Pomahaka River in south Otago, north of Gore, reached a 10 year flood peak near midnight with an estimated flow of 500 cumecs.

CommentThere were flash floods in Western Otago and high river levels.

Heavy RainHeavy Rain at Tapanui
Map Location: -45.945409 169.268023
Comments:

Physical CharacteristicTapanui recorded 3.4cm of rain in 30 minutes on the 7th.

FloodingFlooding
Comments:

Affected LifelineState Highway 90 was closed between Gore and Tapanui due to flooding from the Pomahaka River.

Heavy RainHeavy Rain at Moa Flat
Map Location: -45.723237 169.306139
Comments:

Physical CharacteristicMoa Flat recorded 3.4cm of rain in 30 minutes to 5.30pm on the 7th (which has a return period of 130 years).

LightningLightning at Heriot
Map Location: -45.846905 169.27181
Comments:

CommentIn the Heriot Burn and Pomahaka area, there were severe thunderstorms.

Physical CharacteristicFarmers reported over 8.0cm of rain in six hours.

FloodingFlooding
Comments:

Stock DamageStock losses were reported in the Heriot Burn and Kelso area.

ImpactFarmers reported local streams were flash flooding, washing over roads and paddocks within 15 minutes of the downpours.

Physical CharacteristicThe depth of water that went through the golf course was reported to be at least 2 m. A wall of water came through in a space of 10-15 minutes.

ImpactAbout six houses were flooded.

FloodingFlooding at Ettrick
Map Location: -45.636095 169.371395
Comments:

ImpactThere was surface flooding in Ettrick.

LightningLightning at Leithen Glen
Map Location: -45.876869 169.138985
Comments:

CommentThe Otago Regional Council flow recorder site at Leithen Glen appeared to have been struck by lightning.

Heavy RainHeavy Rain
Comments:

Physical Characteristic3.4cm of rain was recorded in 30 minutes.

FloodingFlooding at Waitahuna
Map Location: -45.986063 169.747236
Comments:

Physical CharacteristicThe Waitahuna River reached an estimated 20 year flood level. It was greater than 59 cumecs before the Otago Regional Council flow recorder was inundated on the night of the 7th.

References

Insurance Councils, The Cost of Weather Loses, Claims History (Updated 2004).
Major weather events in New Zealand, FLOODS and HIGH RAINFALL, to 31st May 2006
Meteorological Society of New Zealand (Inc.) Newsletter 100, March 2005.
NZ Met Service. (2008). Meteorology of Extreme Rainfalls in New Zealand (Mark Pascoe, Ed.).
The 5-6 January 2005 storm in the Welllington region, Hydrology and meteorlogy, Laura Watts, January 2005
Headline: Kapiti siren 'might have scared people'.
The Dominion Post, January 6 2005.
Headline: Mud, sweat and fears after flood.
The Dominion Post, January 8 2005.
www.metservice, notable weather events.govt.nz
Headline: Missing woman found in ranges.
www.nzherald.co.nz, Source: NZPA, 5 January 2005.
Headline: Torrential rain brings flooding and misery.
www.nzherald.co.nz, Source: NZPA, 7 January 2005.
Headline: Storm overwhelms river measuring equipment.
www.nzherald.co.nz, Source: NZPA, 8 January 2005.
The 5-6 January 2005 storm in the Welllington region, Hydrology and meteorlogy, Laura Watts, January 2005
O:\RSKD102\RawData\Archives\Documentation\2005-01-5th-6th-7th New Zealand FloodingTable: Rainfall depths and estimated return periods at selected rainfall stations in the Wellington region.csv
The 5-6 January 2005 storm in the Welllington region, Hydrology and meteorlogy, Laura Watts, January 2005
O:\RSKD102\RawData\Archives\Documentation\2005-01-5th-6th-7th New Zealand FloodingTable: River flood peaks in the Wellington region.csv