100 years
An unusually deep depression developed just east of Otago. The deepening rate of the low was 1.6 bergeron, putting it well within the definition of a “bomb”. Northwesterlies brought moist, tropical air onto New Zealand and the subsequent strong baroclinicity, along with increasing shear vorticity, were major contributors to the development of the low. The strong upward motion field and the strong onshore southerly winds that resulted led to a different distribution of rainfall than in the 1978 event.
Stock losses were estimated at 15,000-17,000 by the Ministry of Agriculture and Fisheries.
Flood-producing rains occurred within a 24-hour period from 2pm on the 16th to 2pm on the 17th.
The rain was largely distributed in resonse to orographic stimulation. The heaviest rains occurred in the Catlins Ranges of the Otago-Southland border as well as in the Pomahaka, Waikaka and Waikaia catchments. The rainfalls in the Pomahaka, Waikaia and Waikaka catchments were higher than in the 1978 event by about 25 mm. This also affected the headwaters of the Taieri River more than in 1978.
The area where the maximum 24-hour falls exceeded a 50 year return period for this event was slightly smaller than and displaced a little towards the southwest of the 1978, 1980 and 1984 events.
Parts of Otago and Southland experienced extremely severe flooding for the second time in 15 months (similar event in October 1878).
Flooding was caused by the rain persisting with a moderate to heavy intensity over a period of some 20 hours at each site. The Clutha and Mataura Rivers received heavy rain only in the lower parts of their catchments but their tributaries the Waikaia, Waikaka and Pomohaka experienced floods similar to those in 1978.
Damage from the floods was $11.00 million (2004) ($12,669,100 2008 dollars).
Insurance industry payouts totalled $2,300,000 ($10,066,200 2008 dollars).
Gale to storm force winds contributed greatly to exposure and consequent stock losses.
There was significant wind damage to structures and trees.
Aviemore recorded a peak wind gust of 104 knots (193 km/hr) on the 17th (220 degrees true).
High winds buffeted the Waitaki Valley on the 17th.
Tree were brought down and power and telephone lines were cut.
One orchard in Waitaki Valley lost about 40 heavily laden older Moorpark apricot trees and about 60 percent of its apple crop.
The Waitaki River was running at more than three times it normal volume of the 17th.
In West Otago damage was done to roads, the railway and to telephone lines.
Scores of roads were closed and several bridges were washed away.
Due to massive evacuations in the Clutha delta, stock losses were comparatively light.
A Civil Defence Emergency was declared in Milton Borough, Bruce County, Kaitangata Borough, Clutha County and Balclutha Borough from the 17th till the 18th.
A Civil Defence Emergency was declared in Tuapeka County from the 17th till the 21st. The declaration inlcuded Kelso and Waitahuna.
The railway line between Dunedin and Invercargill was scoured in many places and services did not resume until the 19th. All rail links south of Dunedin were opened on the 19th.
It was the second disastrous flood to hit the region withinn 15 months.
Stock losses have reached well over the 18,000 mark which include thousands of newly shorn lambs. The timing of the flood proved fatal as many newly shorn sheep died from exposure. Only about 50 dead cattle had been reported as of the 22nd of January.
Balclutha recorded 47.6 mm (4.8 cm) of rain in 12 hours on the 16th and 17th (Return Period 10-20 years).
Balclutha recorded 69.3 mm (6.9 cm) of rain in 24 hours on the 16th and 17th (Return Period 10-20 years).
Balclutha recorded 73.7 mm (7.4 cm) of rain in 48 hours on the 16th and 17th (Return Period 5-10 years).
Usings Balclutha's record to scale the 24-hour rainfalls at nearby stations, these were found to have return periods of the order of 50 to 100 years.
Cape Saunders recorded wind gusts over 90 kts (167 km/hr) at 5am.
The Clutha River rose to 100,000 cusecs (2832 cumecs) at 10pm on the 17th. The mean flow of the river is 15,000 cusecs (425 cumecs).
Parks and reserves suffered only minor damage from the high winds and rain.
50 people at Kelso were evacuated.
The state of civil emergency in Kelso was declared on the 17th and lifted at 2:55pm on the 21st.
Kelso had its second 100 year flood within two years.
Road and rail transport was disrupted.
Telephone communications were cut on the 17th but where restored on the 21st.
The stock losses of newly shorn sheep and lambs were high.
There were tremendous cost of repairs to damaged buildings.
There were no problems with the town's water supply and sewerage.
The Lawrence water supply was cut by floodwaters.
At Leithen Glen, stock losses from exposure were heavy.
At Moa Flat, the observed rainfall of 112 mm (11.2 cm) exceeded 100 year rainfall limits.
Parawa Stream , north of Five Rivers, was 6 cm below its October 1978 flood level at 6pm on the 17th.
Most of the damage in West Otago was done by the Pomahaka River
Queenstown recorded 70 mm (7.0 cm) of rain from 8pm on the 16th to 8am on the 17th.
Communications to the south of the town were cut off and roads were closed to all but heavy vehicles.
Roxburgh recorded 31.6 mm (3.2 cm) of rain in 12 hours on the 16th and 17th (Return Period 2-5 years).
Roxburgh recorded 43.1 mm (4.3 cm) of rain in 24 hours on the 16th and 17th (Return Period 2-5 years).
Roxburgh recorded 54.2 mm (5.4 cm) of rain in 48 hours from the 15th till the 17th (Return Period 2-5 years).
Roxburgh experienced storm force winds.
Tapanui, the nearest rain station to Kelso, calculated 100 year rainfalls for 24 hours duration in the 1978 event, but not in this event.
Stock losses were particularly severe in the Tapanui district. One farm lost 1200 sheep.
Whitecomb received up to 150 mm (15.0 cm) of rain.
Western Southland sufferered more in this event than in the 1978 one, with flooding in the lower catchments of the Waiau and Aparima rivers.
A Civil Defence Emergency was declared in Gore Borough from the 17th until the 18th.
A Civil Defence Emergency was declared in Mataura Borough from the 17th until the 19th.
A Civil Defence Emergency was declared in Southland County from the 17th until the 21st.
Scores of roads were closed and several bridges were washed away.
Rail links were cut.
By 8pm on the 17th telephone services to most areas had been restored.
Rainfall in Fiordland was minimal.
The Oreti River at Centre Bush recorded a height of 3.09 m in January (normal 1.00 m).
Dipton Hilltop recorded 72.0 mm (7.2 cm) of rain in 12 hours on the 16th and 17th.
Dipton Hilltop recorded 87.5 mm (8.8 cm) of rain in 24 hours on the 16th and 17th.
Dipton Hilltop recorded 92.0 mm (9.2 cm) of rain in 48 hours from the 15th till the 17th.
The Aparima River at Dunrobin recorded a height of 2.08 m in January (normal 0.80 m).
The Mataura River at Fairlight recorded a height of 2.35 m in January (normal 0.90 m).
The Waikaia River at Freshford recorded a height of 5.09 m in January (normal 1.00 m).
Gore had a rainfall intensity of 8 mm/hr.
Gore recorded 106 mm (10.6 cm) of rain in 24 hours (Return Period 115 years).
The Mataura River at Gore recorded a height of 5.02 m in January (normal 0.80 m).
The Mataura River at Gorge Road recorded a height of 4.00 m in January.
Invercargill recorded 49.2 mm (4.9 cm) of rain in 12 hours on the 16th and 17th (Return Period 10-20 years).
Invercargill recorded 73.7 mm (7.4 cm) of rain in 24 hours on the 16th and 17th (Return Period more than 50 years).
Invercargill recorded 77.0 mm (7.7 cm) of rain in 48 hours from the 16th till the 18th (Return Period 10-20 years).
Irthing Stream at Ellis Road recorded a height of 3.37 m in January (normal 1.00 m).
Irthing Stream at Mak F/W recorded a height of 5.72 m in January.
The Waihopai River at Kennington recorded a height of 3.99 m in January (normal 2.00 m).
The Oreti River at Lumsden C/W recorded a height of 3.90 m in January (normal 1.00 m).
The Oreti River at Lumsden C/B recorded a height of 3.19 m in January (normal 1.00 m).
The Waimea Stream at Mandeville recorded a height of 4.30 m in January (normal 1.00 m).
At least 1500 people were evacuated from Mataura on the 17th.
The Mataura River at Mataura recorded a height of 9.68 m in January.
The flood in the Mataura Borough on the 17th had a discharge of 1813 cumecs. This was the annual maximum flood.
Some houses were flooded when the Waimumu Stream overflowed and entered the town.
The town was evacuated as a precautionary measure as civil defence workers were worried that the floodbanks may breach.
The army was guarding the way in and out of the town.
Most of the Mataura residents were able to return to their homes on the night of the 17th. About 20 houses in River Head Lane remained evacuated because of problems with a deep-well sewer pump.
About eight houses near Mataura were seriously flooded.
The Mataura River at Mataura Island recorded a height of 4.32 m in January (normal 1.00 m).
Some Mataura Island crops were devastated.
Fences were destroyed.
The Mataura River at G. Simpson's recorded a height of 3.72 m in January.
The Mataura River at S.L. Lobb's recorded a height of 3.77 m in January.
The railway at McNab was covered in 1.8 m of water.
The Oreti River had an a.e.p. of about 10% and a flow of approximately 1,500-1,750 cumecs.
The Oreti River at Dunns Road recorded a height of 1.81 m in January.
Otautau Stream at Otautau recorded a height of 3.10 m in January (normal 1.00 m).
The Mataura River at Parawa recorded a height of 5.56 m in January (normal 1.20 m).
The Waikaia River at Piano Flat recorded a height of 3.76 m in January (normal 0.80 m).
The Mataura River at Pyramid recorded a height of 3.83 m in January (normal 1.00 m).
Quarry Hills received 120 mm (12.0 cm) of rain.
The Waiau River at Sunnyside recorded a height of 4.60 m in January (normal 2.00 m).
Winton Stream at Thomsons Crossing recorded a height of 2.2 m in January.
The Waiau River at Tuatapere recorded a height of 4.84 m in January (normal 1.00 m).
The Waiau River at Mararoa recorded a height of 6.39 m in January (normal 3.00 m).
The flooding in Waikaia was equal to that in 1978.
The Waikaia River at Waikaia recorded a height of 3.60 m in January (normal 1.00 m).
Waikaka received 100.5 mm (10.1 cm) of rain in 24 hours.
Waikiwi Stream at Ferry Road recorded a height of 2.37 m in January (normally tidal).
The Oreti River at Wallacetown recorded a height of 4.85 m in January (normal 1.40 m).
The Mataura River at Wyndham recorded a height of 4.63 m in January (normal 1.00 m).
Wyndham was still under a civil defence emergency on the 20th.
The Aparima River at Yellow Bluff recorded a height of 2.53 m in January (normal 0.80 m).
100 years
An unusually deep depression developed just east of Otago. The deepening rate of the low was 1.6 bergeron, putting it well within the definition of a “bomb”. Northwesterlies brought moist, tropical air onto New Zealand and the subsequent strong baroclinicity, along with increasing shear vorticity, were major contributors to the development of the low. The strong upward motion field and the strong onshore southerly winds that resulted led to a different distribution of rainfall than in the 1978 event.
Stock losses were estimated at 15,000-17,000 by the Ministry of Agriculture and Fisheries.
Flood-producing rains occurred within a 24-hour period from 2pm on the 16th to 2pm on the 17th.
The rain was largely distributed in resonse to orographic stimulation. The heaviest rains occurred in the Catlins Ranges of the Otago-Southland border as well as in the Pomahaka, Waikaka and Waikaia catchments. The rainfalls in the Pomahaka, Waikaia and Waikaka catchments were higher than in the 1978 event by about 25 mm. This also affected the headwaters of the Taieri River more than in 1978.
The area where the maximum 24-hour falls exceeded a 50 year return period for this event was slightly smaller than and displaced a little towards the southwest of the 1978, 1980 and 1984 events.
Parts of Otago and Southland experienced extremely severe flooding for the second time in 15 months (similar event in October 1878).
Flooding was caused by the rain persisting with a moderate to heavy intensity over a period of some 20 hours at each site. The Clutha and Mataura Rivers received heavy rain only in the lower parts of their catchments but their tributaries the Waikaia, Waikaka and Pomohaka experienced floods similar to those in 1978.
Damage from the floods was $11.00 million (2004) ($12,669,100 2008 dollars).
Insurance industry payouts totalled $2,300,000 ($10,066,200 2008 dollars).
Gale to storm force winds contributed greatly to exposure and consequent stock losses.
There was significant wind damage to structures and trees.
Aviemore recorded a peak wind gust of 104 knots (193 km/hr) on the 17th (220 degrees true).
High winds buffeted the Waitaki Valley on the 17th.
Tree were brought down and power and telephone lines were cut.
One orchard in Waitaki Valley lost about 40 heavily laden older Moorpark apricot trees and about 60 percent of its apple crop.
The Waitaki River was running at more than three times it normal volume of the 17th.
In West Otago damage was done to roads, the railway and to telephone lines.
Scores of roads were closed and several bridges were washed away.
Due to massive evacuations in the Clutha delta, stock losses were comparatively light.
A Civil Defence Emergency was declared in Milton Borough, Bruce County, Kaitangata Borough, Clutha County and Balclutha Borough from the 17th till the 18th.
A Civil Defence Emergency was declared in Tuapeka County from the 17th till the 21st. The declaration inlcuded Kelso and Waitahuna.
The railway line between Dunedin and Invercargill was scoured in many places and services did not resume until the 19th. All rail links south of Dunedin were opened on the 19th.
It was the second disastrous flood to hit the region withinn 15 months.
Stock losses have reached well over the 18,000 mark which include thousands of newly shorn lambs. The timing of the flood proved fatal as many newly shorn sheep died from exposure. Only about 50 dead cattle had been reported as of the 22nd of January.
Balclutha recorded 47.6 mm (4.8 cm) of rain in 12 hours on the 16th and 17th (Return Period 10-20 years).
Balclutha recorded 69.3 mm (6.9 cm) of rain in 24 hours on the 16th and 17th (Return Period 10-20 years).
Balclutha recorded 73.7 mm (7.4 cm) of rain in 48 hours on the 16th and 17th (Return Period 5-10 years).
Usings Balclutha's record to scale the 24-hour rainfalls at nearby stations, these were found to have return periods of the order of 50 to 100 years.
Cape Saunders recorded wind gusts over 90 kts (167 km/hr) at 5am.
The Clutha River rose to 100,000 cusecs (2832 cumecs) at 10pm on the 17th. The mean flow of the river is 15,000 cusecs (425 cumecs).
Parks and reserves suffered only minor damage from the high winds and rain.
50 people at Kelso were evacuated.
The state of civil emergency in Kelso was declared on the 17th and lifted at 2:55pm on the 21st.
Kelso had its second 100 year flood within two years.
Road and rail transport was disrupted.
Telephone communications were cut on the 17th but where restored on the 21st.
The stock losses of newly shorn sheep and lambs were high.
There were tremendous cost of repairs to damaged buildings.
There were no problems with the town's water supply and sewerage.
The Lawrence water supply was cut by floodwaters.
At Leithen Glen, stock losses from exposure were heavy.
At Moa Flat, the observed rainfall of 112 mm (11.2 cm) exceeded 100 year rainfall limits.
Parawa Stream , north of Five Rivers, was 6 cm below its October 1978 flood level at 6pm on the 17th.
Most of the damage in West Otago was done by the Pomahaka River
Queenstown recorded 70 mm (7.0 cm) of rain from 8pm on the 16th to 8am on the 17th.
Communications to the south of the town were cut off and roads were closed to all but heavy vehicles.
Roxburgh recorded 31.6 mm (3.2 cm) of rain in 12 hours on the 16th and 17th (Return Period 2-5 years).
Roxburgh recorded 43.1 mm (4.3 cm) of rain in 24 hours on the 16th and 17th (Return Period 2-5 years).
Roxburgh recorded 54.2 mm (5.4 cm) of rain in 48 hours from the 15th till the 17th (Return Period 2-5 years).
Roxburgh experienced storm force winds.
Tapanui, the nearest rain station to Kelso, calculated 100 year rainfalls for 24 hours duration in the 1978 event, but not in this event.
Stock losses were particularly severe in the Tapanui district. One farm lost 1200 sheep.
Whitecomb received up to 150 mm (15.0 cm) of rain.
Western Southland sufferered more in this event than in the 1978 one, with flooding in the lower catchments of the Waiau and Aparima rivers.
A Civil Defence Emergency was declared in Gore Borough from the 17th until the 18th.
A Civil Defence Emergency was declared in Mataura Borough from the 17th until the 19th.
A Civil Defence Emergency was declared in Southland County from the 17th until the 21st.
Scores of roads were closed and several bridges were washed away.
Rail links were cut.
By 8pm on the 17th telephone services to most areas had been restored.
Rainfall in Fiordland was minimal.
The Oreti River at Centre Bush recorded a height of 3.09 m in January (normal 1.00 m).
Dipton Hilltop recorded 72.0 mm (7.2 cm) of rain in 12 hours on the 16th and 17th.
Dipton Hilltop recorded 87.5 mm (8.8 cm) of rain in 24 hours on the 16th and 17th.
Dipton Hilltop recorded 92.0 mm (9.2 cm) of rain in 48 hours from the 15th till the 17th.
The Aparima River at Dunrobin recorded a height of 2.08 m in January (normal 0.80 m).
The Mataura River at Fairlight recorded a height of 2.35 m in January (normal 0.90 m).
The Waikaia River at Freshford recorded a height of 5.09 m in January (normal 1.00 m).
Gore had a rainfall intensity of 8 mm/hr.
Gore recorded 106 mm (10.6 cm) of rain in 24 hours (Return Period 115 years).
The Mataura River at Gore recorded a height of 5.02 m in January (normal 0.80 m).
The Mataura River at Gorge Road recorded a height of 4.00 m in January.
Invercargill recorded 49.2 mm (4.9 cm) of rain in 12 hours on the 16th and 17th (Return Period 10-20 years).
Invercargill recorded 73.7 mm (7.4 cm) of rain in 24 hours on the 16th and 17th (Return Period more than 50 years).
Invercargill recorded 77.0 mm (7.7 cm) of rain in 48 hours from the 16th till the 18th (Return Period 10-20 years).
Irthing Stream at Ellis Road recorded a height of 3.37 m in January (normal 1.00 m).
Irthing Stream at Mak F/W recorded a height of 5.72 m in January.
The Waihopai River at Kennington recorded a height of 3.99 m in January (normal 2.00 m).
The Oreti River at Lumsden C/W recorded a height of 3.90 m in January (normal 1.00 m).
The Oreti River at Lumsden C/B recorded a height of 3.19 m in January (normal 1.00 m).
The Waimea Stream at Mandeville recorded a height of 4.30 m in January (normal 1.00 m).
At least 1500 people were evacuated from Mataura on the 17th.
The Mataura River at Mataura recorded a height of 9.68 m in January.
The flood in the Mataura Borough on the 17th had a discharge of 1813 cumecs. This was the annual maximum flood.
Some houses were flooded when the Waimumu Stream overflowed and entered the town.
The town was evacuated as a precautionary measure as civil defence workers were worried that the floodbanks may breach.
The army was guarding the way in and out of the town.
Most of the Mataura residents were able to return to their homes on the night of the 17th. About 20 houses in River Head Lane remained evacuated because of problems with a deep-well sewer pump.
About eight houses near Mataura were seriously flooded.
The Mataura River at Mataura Island recorded a height of 4.32 m in January (normal 1.00 m).
Some Mataura Island crops were devastated.
Fences were destroyed.
The Mataura River at G. Simpson's recorded a height of 3.72 m in January.
The Mataura River at S.L. Lobb's recorded a height of 3.77 m in January.
The railway at McNab was covered in 1.8 m of water.
The Oreti River had an a.e.p. of about 10% and a flow of approximately 1,500-1,750 cumecs.
The Oreti River at Dunns Road recorded a height of 1.81 m in January.
Otautau Stream at Otautau recorded a height of 3.10 m in January (normal 1.00 m).
The Mataura River at Parawa recorded a height of 5.56 m in January (normal 1.20 m).
The Waikaia River at Piano Flat recorded a height of 3.76 m in January (normal 0.80 m).
The Mataura River at Pyramid recorded a height of 3.83 m in January (normal 1.00 m).
Quarry Hills received 120 mm (12.0 cm) of rain.
The Waiau River at Sunnyside recorded a height of 4.60 m in January (normal 2.00 m).
Winton Stream at Thomsons Crossing recorded a height of 2.2 m in January.
The Waiau River at Tuatapere recorded a height of 4.84 m in January (normal 1.00 m).
The Waiau River at Mararoa recorded a height of 6.39 m in January (normal 3.00 m).
The flooding in Waikaia was equal to that in 1978.
The Waikaia River at Waikaia recorded a height of 3.60 m in January (normal 1.00 m).
Waikaka received 100.5 mm (10.1 cm) of rain in 24 hours.
Waikiwi Stream at Ferry Road recorded a height of 2.37 m in January (normally tidal).
The Oreti River at Wallacetown recorded a height of 4.85 m in January (normal 1.40 m).
The Mataura River at Wyndham recorded a height of 4.63 m in January (normal 1.00 m).
Wyndham was still under a civil defence emergency on the 20th.
The Aparima River at Yellow Bluff recorded a height of 2.53 m in January (normal 0.80 m).