100 years
A cloudburst over Tararu Stream caused flash floods and severe damage in the Tararu township. Canterbury and Otago also experienced heavy rain and flooding resulting in road closures.
A large, slow-moving depression was moving slowly eastwards towards the North Island, with an east to northeast flow covering central and southern New Zealand. A frontal rain band moved southwards onto South Island.
Slips and flooding cut roads in many places and made travel difficult on several main highways and throughout the back country from Marlborough to Otago.
Flooded rivers washed out and undermined bridges right through the regions.
Widespread surface flooding was reported around towns and cities.
State Highway 1 between Kaikoura and Dunedin was "treacherous". There were slips and flooding across the road.
On the 15th roads were still slippery and there was still some residual surface flooding.
There were two severe rainfall events of the night of the 11th and the afternoon of the 12th resulting from very intense electrical storms.
The storms were localised but caused considerable flooding and damage.
Lower Kauaeranga River recorded 142 mm (14.2 cm) of rain in three hours.
30 campers were stranded overnight after Maungakirikiri Bridge was damaged.
The Maungakirikiri Bridge south of Thames was shunted downstream. The floodwaters washed away a vehicle with a boat and trailer attached.
The first rainfall on the 11th caused substantial damage in the Mangaiti catchment as well as the Te Aroha and Paeroa catchments.
Tararu Stream swept through the small settlement of Tararu.
Between 15 and 25 homes (approximately 100 people) were evacuated from Tararu.
Insurance industry payouts for the event was $250,000.
Silt and mud covered properties.
Several roads were closed.
It was the worst flood in town since 1985
A house was flooded with one metre of water.
About 100 properties were affected in total.
One couple had records for their commercial fishing business destroyed and fishing gear and tools were swept away when their house was flooded.
The mid Tararu catchment recorded 170 mm (17.0 cm) of rain in three hours on the afternoon of the 12th.
Nearby regions received 30-40 mm (3.0-4.0 cm) of rain in 30 minutes on the afternoon of the 12th. No figures recorded for the exact area affected.
There was damage to scheme works. The cost of repairing the works, fabric and rock-lined flood channels that had been torn apart was estimated to be $200,000 - $250,000 in 2002. The works saved a lot of property damage.
Tararu Stream had an estimated flow of 250 cumecs.
There was no declaration of emergency but the return period was estimated as a 100 year event.
Tararu Stream overflowed its banks sending large amounts water and debris over State Highway 25.
Huge rocks and 3-6 m logs came tumbling down the flooded creek.
Te Aroha recorded over 150 mm (15.0 cm) of rain.
The rainfall on the 12th caused extensive damage to both Waihou Valley scheme works and private property. Te Puru to Kauaeranga catchments were also affected.
Waitoa River broke its banks in several places.
MetService issued a Severe Weather Warning for the Kaikoura coast and North Canterbury ranges on the 11th.
North Canterbury foothills received 250 mm (25.0 cm) of rain.
Heavy rain wreaked havoc along the east coast of Canterbury from the 11th to the 13th .More heavy rain fell on the morning of the 13th.
There was slips and surface flooding throughout Canterbury and the Kaikoura Coast.
30 families (approximately 120 people) were evacuated from a camping ground in Central Canterbury on the afternoon of the 12th. It was one of three camping grounds in the province reported to have been evacuated.
There were problems on State Highway 73 to the West Coast over Arthur's Pass. There was flooding on the road beween Springfield and Porters Pass and the road was down to one lane in places.
State Highway 1 was closed at Ashburton and at Maheno on the 12th. Slips and flooding also caused problems on State Highway 1 north and south of Kaikoura.
Emergency services received hundreds of flood-related calls over the 12th to the 13th.
All major roads were open again by the afternoon of the 13th.
Insurance industry payouts for the event was $250,000 in 2002.
Cell phone and toll services to Otago and Southland were cut at Timaru.
One of the hardest hit areas was Banks Peninsula, particularly Akaroa.
Akaroa recorded 120 mm (12.0 cm) of rain in 24 hours.
Floodwaters overwhelmed many bridges and streets in Akaroa.
The main street was underwater on the morning of the 13th and was closed to traffic.
The township of Akaroa was severly flooded.
Some people had to be evacuated from the main street area.
By the 14th most of the flooding had receded.
The water supply was cut at the on the 12th and 13th.
Houses were flooded.
A bridge at Coopers Creek at the back of Oxford was washed out.
Campers at the Glentunnel camping ground evacuated on the afternoon of the 12th as floodwaters threatened the area.
Hanmer Forest recorded 109 mm (10.9 cm) of rain in 24 hours.
Kaikoura recorded 100 mm (10.0 cm) of rain in 24 hours to the morning of the 13th.
Homes under threat of flooding on the Kaikoura Coast were evacuated.
Kowhai Bridge was washed out.
Two bridges were washed out at the back of Methven.
Snowden recorded 100 mm (10.0 cm) of rain in 24 hours.
Four kayakers were rescued from floodwaters in the Waimakariri Gorge area on the afternoon of the 12th.
Extreme rainfall affected only a very small area of the province.
There was widespread flooding from Kaikoura to North Otago on the 12th.
State Highway 1 between Waikouaiti and Dunedin was closed early on the afternoon of the 12th. Waikouiti River kept State Highway 1 closed for 24 hours.
Kakanui mountains received between 100 mm (10.0 cm) to nearly 500 mm (50.0 cm) over four days.
The Dasher recorded 251.5 mm (25.15 cm) of rain in 36 hours (which has a return period of over 150 years).
The Dasher recorded 217 mm (21.7 cm) of rain in 24 hours to 6:30pm on the 12th (which has a return period of over 150 years).
100 years
A cloudburst over Tararu Stream caused flash floods and severe damage in the Tararu township. Canterbury and Otago also experienced heavy rain and flooding resulting in road closures.
A large, slow-moving depression was moving slowly eastwards towards the North Island, with an east to northeast flow covering central and southern New Zealand. A frontal rain band moved southwards onto South Island.
Slips and flooding cut roads in many places and made travel difficult on several main highways and throughout the back country from Marlborough to Otago.
Flooded rivers washed out and undermined bridges right through the regions.
Widespread surface flooding was reported around towns and cities.
State Highway 1 between Kaikoura and Dunedin was "treacherous". There were slips and flooding across the road.
On the 15th roads were still slippery and there was still some residual surface flooding.
There were two severe rainfall events of the night of the 11th and the afternoon of the 12th resulting from very intense electrical storms.
The storms were localised but caused considerable flooding and damage.
Lower Kauaeranga River recorded 142 mm (14.2 cm) of rain in three hours.
30 campers were stranded overnight after Maungakirikiri Bridge was damaged.
The Maungakirikiri Bridge south of Thames was shunted downstream. The floodwaters washed away a vehicle with a boat and trailer attached.
The first rainfall on the 11th caused substantial damage in the Mangaiti catchment as well as the Te Aroha and Paeroa catchments.
Tararu Stream swept through the small settlement of Tararu.
Between 15 and 25 homes (approximately 100 people) were evacuated from Tararu.
Insurance industry payouts for the event was $250,000.
Silt and mud covered properties.
Several roads were closed.
It was the worst flood in town since 1985
A house was flooded with one metre of water.
About 100 properties were affected in total.
One couple had records for their commercial fishing business destroyed and fishing gear and tools were swept away when their house was flooded.
The mid Tararu catchment recorded 170 mm (17.0 cm) of rain in three hours on the afternoon of the 12th.
Nearby regions received 30-40 mm (3.0-4.0 cm) of rain in 30 minutes on the afternoon of the 12th. No figures recorded for the exact area affected.
There was damage to scheme works. The cost of repairing the works, fabric and rock-lined flood channels that had been torn apart was estimated to be $200,000 - $250,000 in 2002. The works saved a lot of property damage.
Tararu Stream had an estimated flow of 250 cumecs.
There was no declaration of emergency but the return period was estimated as a 100 year event.
Tararu Stream overflowed its banks sending large amounts water and debris over State Highway 25.
Huge rocks and 3-6 m logs came tumbling down the flooded creek.
Te Aroha recorded over 150 mm (15.0 cm) of rain.
The rainfall on the 12th caused extensive damage to both Waihou Valley scheme works and private property. Te Puru to Kauaeranga catchments were also affected.
Waitoa River broke its banks in several places.
MetService issued a Severe Weather Warning for the Kaikoura coast and North Canterbury ranges on the 11th.
North Canterbury foothills received 250 mm (25.0 cm) of rain.
Heavy rain wreaked havoc along the east coast of Canterbury from the 11th to the 13th .More heavy rain fell on the morning of the 13th.
There was slips and surface flooding throughout Canterbury and the Kaikoura Coast.
30 families (approximately 120 people) were evacuated from a camping ground in Central Canterbury on the afternoon of the 12th. It was one of three camping grounds in the province reported to have been evacuated.
There were problems on State Highway 73 to the West Coast over Arthur's Pass. There was flooding on the road beween Springfield and Porters Pass and the road was down to one lane in places.
State Highway 1 was closed at Ashburton and at Maheno on the 12th. Slips and flooding also caused problems on State Highway 1 north and south of Kaikoura.
Emergency services received hundreds of flood-related calls over the 12th to the 13th.
All major roads were open again by the afternoon of the 13th.
Insurance industry payouts for the event was $250,000 in 2002.
Cell phone and toll services to Otago and Southland were cut at Timaru.
One of the hardest hit areas was Banks Peninsula, particularly Akaroa.
Akaroa recorded 120 mm (12.0 cm) of rain in 24 hours.
Floodwaters overwhelmed many bridges and streets in Akaroa.
The main street was underwater on the morning of the 13th and was closed to traffic.
The township of Akaroa was severly flooded.
Some people had to be evacuated from the main street area.
By the 14th most of the flooding had receded.
The water supply was cut at the on the 12th and 13th.
Houses were flooded.
A bridge at Coopers Creek at the back of Oxford was washed out.
Campers at the Glentunnel camping ground evacuated on the afternoon of the 12th as floodwaters threatened the area.
Hanmer Forest recorded 109 mm (10.9 cm) of rain in 24 hours.
Kaikoura recorded 100 mm (10.0 cm) of rain in 24 hours to the morning of the 13th.
Homes under threat of flooding on the Kaikoura Coast were evacuated.
Kowhai Bridge was washed out.
Two bridges were washed out at the back of Methven.
Snowden recorded 100 mm (10.0 cm) of rain in 24 hours.
Four kayakers were rescued from floodwaters in the Waimakariri Gorge area on the afternoon of the 12th.
Extreme rainfall affected only a very small area of the province.
There was widespread flooding from Kaikoura to North Otago on the 12th.
State Highway 1 between Waikouaiti and Dunedin was closed early on the afternoon of the 12th. Waikouiti River kept State Highway 1 closed for 24 hours.
Kakanui mountains received between 100 mm (10.0 cm) to nearly 500 mm (50.0 cm) over four days.
The Dasher recorded 251.5 mm (25.15 cm) of rain in 36 hours (which has a return period of over 150 years).
The Dasher recorded 217 mm (21.7 cm) of rain in 24 hours to 6:30pm on the 12th (which has a return period of over 150 years).