NZ Historic Weather Events Catalogue

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April 1923 Otago Flooding ( 1923-04-29 )

Heavy rain over three days caused flooding from Dunedin down to Balclutha.

Otago

Heavy RainHeavy Rain at Dunedin
Map Location: -45.87911 170.502707
Duration:   3  days - Rain commenced the night of the 28th until 8.30am on the 30th.
Comments:
FloodingFlooding
Comments:

CommentThe flood which occurred on on the 29th caused severe loss to a large number of residents in low lying portions of the city and suburbs.

DamageHouseholders have had their furniture ruined, houses damaged and cellars flooded.

Affected LifelineThere was heavy damage done to roads.

CommentWater increased in depth particularly in the South Dunedin, St Kilda, Musselburgh and Tainui areas.

Affected LifelineThe streets at the South, the Queens Drive and Musselburgh was one sheet of water knee deep. From the Anderson Bays road to Onslow House and every other street in the vicinity was in the same condition.

EvacueesA great number of people had to leave their houses.

ImpactThe lower lying dwellings suffered most but even those raised a foot or two above the ground water collected water to a depth of anything from six inches to a couple of feet.

Physical CharacteristicThe Lake Logan area was underwater and the average depth around the Pelchet Bay Railway Station was about 2 ft (0.61m).

ImpactBoats were also used for coveying people to safety from houses at the foot of St Andrew Street.

Damage CostThe dental school and also the students common room and the dark room were completely washed away by the Leith flood. Hundreds of pounds worth of stores were destroyed.

ImpactLeith Valley suffered extensively. In many places the stream burst its banks and inundated the road, several private sections and gardens.

Affected LifelineThe stream overflowed its banks through the bridge leading to Rockside. The water flowed knee-deep down Malvern and Woolhaugh streets, making them impassable.

ImpactAs the Leith rose it undermined its banks to such an extent the the bed was fully 30 ft (9.1m) wide in places.

Affected LifelineAll access from the Valley to the Ross Creek Resevoir was cut off.

Affected LifelineDamage to telegraph poles was extensive, wires are torn and broken in many places.

DamageDavidson sawmill had little of its structure remaining intact after flood waters went through it.

ImpactAs the waters subsided a thick crust of slime was left on the walls of the buildings.

ImpactThe Leith Stream oveflowed its banks and the water rushed down Duke street, water extended the full width of the street and flooded houses to a depth of 18 inches (0.46m).

Physical CharacteristicThere was 9 ft (2.7m) of water on the spillway at the Waipori weir. This was the greatest record since May of 1917 when the measurement was 13 ft (4m).

LandslideLandslide
Comments:

DamageA slip at Wilkie Road caused the collapse of a five roomed house.

Heavy RainHeavy Rain at Green Island
Map Location: -45.89613 170.43495
Comments:

CommentHeavy rain caused a heavy flood in Green Island and the neighbourhood.

FloodingFlooding
Comments:

CommentThe Kaikorai Stream was running bank high and as rain continued the creek overflowed.

ImpactAll low lying ground was underwater.

ImpactOn the flat side of the line every house was more or less inundated and some damage was done to all.

Affected LifelineThere were several slips on the main line. The most extensive one was on the Walton Park branch. A chain and a half (30m) of the embankment was washed away leaving the rails suspended.

ImpactFew houses on the Main South Road in the lower part of the town escaped.

FloodingFlooding at Milton
Map Location: -46.123263 169.966084
Comments:

CommentIt was the heaviest flood which had ever been experienced in Milton to that time.

ImpactThere was an unbroken sheet of water extending from Union street to the southern traffic bridge as far as could be seen.

FloodingFlooding at Tokoiti
Map Location: -46.13455 169.96731
Comments:

Affected LifelineThe floodwaters completely submerged the bridge near the flaxmill.

DamageFloodwaters were pouring through the windows of some houses.

Stock DamageOne farmer lost 400 sheep.

FloodingFlooding at Clarksville
Map Location: -46.12945 169.92277
Comments:

CommentClarksville reported that it was the biggest flood ever experienced in that district.

Affected LifelineThe water extended from along Moneymore Road to the Main Road and also for a considerable distance on the Clarksville to Glenore road.

Affected LifelineThe waters were flowing over Clarksville railway platform and the railway line was submerged for a considerable distance.

FloodingFlooding at Balclutha
Map Location: -46.23013 169.733472
Comments:

CommentThere was much flooding throughout the district.

CommentThe Molyneux River rose rapidly above normal at the traffic bridge.

ImpactBarnego Flat, Stirling and portions of Inchclutha.

Affected LifelineThe line was partially submerged from Kaiapuaka to Campbells (near Balclutha) on the north side. It was also underwater between Stirling and Lovells Flat. The Railway line both north and south of Balclutha was under water as was the Catlins branch of the line.

FloodingFlooding at Palmerston
Map Location: -45.483857 170.721017
Comments:

DamageAll the low lying land was flooded and a large amount of damage was caused.

FloodingFlooding at Outram
Map Location: -45.859829 170.220115
Comments:

Physical CharacteristicTaieri River reached a very high level flowing through Outram with only 18 inches (0.46m) to spare from the top of the embankment.

FloodingFlooding at East Taieri
Map Location: -45.898751 170.338476
Comments:

ImpactThe East Taieri embankment was breached. Breaks occurred in the embankment on the west side of the river between Outram and Allanton.

FloodingFlooding at Allanton
Map Location: -45.918208 170.25344
Comments:

Physical CharacteristicAt Allanton, the Taieri River rose from 9 ft 9 in (3.0m) to 15 ft (4.6m).

Physical CharacteristicWater was flowing over the railway line to a depth of 3 to 4 feet (0.91-1.22m) for a distance of 200 yards (183m).

FloodingFlooding at Otokia
Map Location: -45.949801 170.189367
Comments:

ImpactAt Otokia, the river rose quickly at an exceptional rate. It overflowed the bank at what is known as "The Big Break" near the Otokia railway bridge.

References

Headline: The Flood
Otago Witness, May 1, 1923,

April 1923 Otago Flooding ( 1923-04-29 )

Heavy rain over three days caused flooding from Dunedin down to Balclutha.

Otago

Heavy RainHeavy Rain at Dunedin
Map Location: -45.87911 170.502707
Duration:   3  days - Rain commenced the night of the 28th until 8.30am on the 30th.
Comments:
FloodingFlooding
Comments:

CommentThe flood which occurred on on the 29th caused severe loss to a large number of residents in low lying portions of the city and suburbs.

DamageHouseholders have had their furniture ruined, houses damaged and cellars flooded.

Affected LifelineThere was heavy damage done to roads.

CommentWater increased in depth particularly in the South Dunedin, St Kilda, Musselburgh and Tainui areas.

Affected LifelineThe streets at the South, the Queens Drive and Musselburgh was one sheet of water knee deep. From the Anderson Bays road to Onslow House and every other street in the vicinity was in the same condition.

EvacueesA great number of people had to leave their houses.

ImpactThe lower lying dwellings suffered most but even those raised a foot or two above the ground water collected water to a depth of anything from six inches to a couple of feet.

Physical CharacteristicThe Lake Logan area was underwater and the average depth around the Pelchet Bay Railway Station was about 2 ft (0.61m).

ImpactBoats were also used for coveying people to safety from houses at the foot of St Andrew Street.

Damage CostThe dental school and also the students common room and the dark room were completely washed away by the Leith flood. Hundreds of pounds worth of stores were destroyed.

ImpactLeith Valley suffered extensively. In many places the stream burst its banks and inundated the road, several private sections and gardens.

Affected LifelineThe stream overflowed its banks through the bridge leading to Rockside. The water flowed knee-deep down Malvern and Woolhaugh streets, making them impassable.

ImpactAs the Leith rose it undermined its banks to such an extent the the bed was fully 30 ft (9.1m) wide in places.

Affected LifelineAll access from the Valley to the Ross Creek Resevoir was cut off.

Affected LifelineDamage to telegraph poles was extensive, wires are torn and broken in many places.

DamageDavidson sawmill had little of its structure remaining intact after flood waters went through it.

ImpactAs the waters subsided a thick crust of slime was left on the walls of the buildings.

ImpactThe Leith Stream oveflowed its banks and the water rushed down Duke street, water extended the full width of the street and flooded houses to a depth of 18 inches (0.46m).

Physical CharacteristicThere was 9 ft (2.7m) of water on the spillway at the Waipori weir. This was the greatest record since May of 1917 when the measurement was 13 ft (4m).

LandslideLandslide
Comments:

DamageA slip at Wilkie Road caused the collapse of a five roomed house.

Heavy RainHeavy Rain at Green Island
Map Location: -45.89613 170.43495
Comments:

CommentHeavy rain caused a heavy flood in Green Island and the neighbourhood.

FloodingFlooding
Comments:

CommentThe Kaikorai Stream was running bank high and as rain continued the creek overflowed.

ImpactAll low lying ground was underwater.

ImpactOn the flat side of the line every house was more or less inundated and some damage was done to all.

Affected LifelineThere were several slips on the main line. The most extensive one was on the Walton Park branch. A chain and a half (30m) of the embankment was washed away leaving the rails suspended.

ImpactFew houses on the Main South Road in the lower part of the town escaped.

FloodingFlooding at Milton
Map Location: -46.123263 169.966084
Comments:

CommentIt was the heaviest flood which had ever been experienced in Milton to that time.

ImpactThere was an unbroken sheet of water extending from Union street to the southern traffic bridge as far as could be seen.

FloodingFlooding at Tokoiti
Map Location: -46.13455 169.96731
Comments:

Affected LifelineThe floodwaters completely submerged the bridge near the flaxmill.

DamageFloodwaters were pouring through the windows of some houses.

Stock DamageOne farmer lost 400 sheep.

FloodingFlooding at Clarksville
Map Location: -46.12945 169.92277
Comments:

CommentClarksville reported that it was the biggest flood ever experienced in that district.

Affected LifelineThe water extended from along Moneymore Road to the Main Road and also for a considerable distance on the Clarksville to Glenore road.

Affected LifelineThe waters were flowing over Clarksville railway platform and the railway line was submerged for a considerable distance.

FloodingFlooding at Balclutha
Map Location: -46.23013 169.733472
Comments:

CommentThere was much flooding throughout the district.

CommentThe Molyneux River rose rapidly above normal at the traffic bridge.

ImpactBarnego Flat, Stirling and portions of Inchclutha.

Affected LifelineThe line was partially submerged from Kaiapuaka to Campbells (near Balclutha) on the north side. It was also underwater between Stirling and Lovells Flat. The Railway line both north and south of Balclutha was under water as was the Catlins branch of the line.

FloodingFlooding at Palmerston
Map Location: -45.483857 170.721017
Comments:

DamageAll the low lying land was flooded and a large amount of damage was caused.

FloodingFlooding at Outram
Map Location: -45.859829 170.220115
Comments:

Physical CharacteristicTaieri River reached a very high level flowing through Outram with only 18 inches (0.46m) to spare from the top of the embankment.

FloodingFlooding at East Taieri
Map Location: -45.898751 170.338476
Comments:

ImpactThe East Taieri embankment was breached. Breaks occurred in the embankment on the west side of the river between Outram and Allanton.

FloodingFlooding at Allanton
Map Location: -45.918208 170.25344
Comments:

Physical CharacteristicAt Allanton, the Taieri River rose from 9 ft 9 in (3.0m) to 15 ft (4.6m).

Physical CharacteristicWater was flowing over the railway line to a depth of 3 to 4 feet (0.91-1.22m) for a distance of 200 yards (183m).

FloodingFlooding at Otokia
Map Location: -45.949801 170.189367
Comments:

ImpactAt Otokia, the river rose quickly at an exceptional rate. It overflowed the bank at what is known as "The Big Break" near the Otokia railway bridge.

References

Headline: The Flood
Otago Witness, May 1, 1923,