NZ Historic Weather Events Catalogue

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November 1867 West Coast Flooding ( 1867-11-05 )

Heavy rain caused flooding in Grey Valley resulting in two casualties.

West Coast

Heavy RainHeavy Rain at Greymouth
Map Location: -42.451212 171.206779
Comments:

CauseUnsettled weather prevailed for a number of days and on the night of the 4th, heavy continuous rain commenced, lasting well into the night of the 5th

FloodingFlooding
Comments:

CommentWater was flowing over the south bank of the Grey River and flooded to a great volume of the lower portion of Greymouth.

CommentThe river in Greymouth was bank high at day break on the 6th and by 10am it had begun overflowing the banks.

CommentFlood levels increased when high tide occurred at 5pm and by 5.30pm on the 6th the whole of Greymouth and Blaketown was flooded by mud and water.

Affected LifelineWater flowed down Boundary Street and flooded much of the lower town.

DamageMany buildings were torn off their foundations and washed away.

Affected LifelineThe bridge between Blaketown and Greymouth was swept away isolating the two towns.

DamageThe embankment and wharf were washed away.

CommentThe Grey River flooded nearly to the top of the sheet piling.

CommentIt was considered to be the highest flood in the memory of the oldest European on the coast and many of the older established Maori in the area.

DamageNearly the whole length of the costly embankment that had only just been completed was destroyed.

EvacueesMany people had to be evacuated in boats.

CommentSandbags were used to contain the flood water.

ImpactFrom the lower end of the wharf about 200m of protective planks had been forced inwards towards the river and in some places were lying almost horizontally. Further along, another section was completely destroyed and washed away, whilst the upper section of the Wharf was greatly loosened. The current had scoured a deep channel in the gravel where the piles were driven.

CommentBy 8.30pm water levels had fallen.

FloodingFlooding at Grey Valley
Comments:

DamageAt the Twelve Mile township all buildings were more than half covered with water with many being destroyed.

Stock DamageAll horses, cattle and sheep were lost in the Twelve Mile area

Affected LifelineA bridge was washed away at Redjacks and Omoto racecourse

DamageTwo houses were swept away at the junction of the Arnold and Grey Rivers.

Affected LifelineMany landslips occurred along the road between Greymouth and the Arnold River, and Coal Creek Flat was completely submerged by floodwaters.

CasualtiesA boy at Coal Creek drowned

FloodingFlooding at Nelson Creek
Map Location: -42.4052 171.51152
Comments:

Property DamageA store, hotel and goods were lost.

CasualtiesA man at Nelson Creek drowned

References

Benn, J. West Coast Regional Council Flood Data from 1846-1990 (CD Rom).
Benn, J.L. (1990). A Chronology of Flooding on the West Coast, South Island, New Zealand 1846-1990.
Benn, J.L. (n.d.) Major Flood Events in Greymouth, New Zealand: 1862-1988. West Coast Regional Council
Headline: Another Flood at Greymouth.
The West Coast Times, 11 November 1867.

November 1867 West Coast Flooding ( 1867-11-05 )

Heavy rain caused flooding in Grey Valley resulting in two casualties.

West Coast

Heavy RainHeavy Rain at Greymouth
Map Location: -42.451212 171.206779
Comments:

CauseUnsettled weather prevailed for a number of days and on the night of the 4th, heavy continuous rain commenced, lasting well into the night of the 5th

FloodingFlooding
Comments:

CommentWater was flowing over the south bank of the Grey River and flooded to a great volume of the lower portion of Greymouth.

CommentThe river in Greymouth was bank high at day break on the 6th and by 10am it had begun overflowing the banks.

CommentFlood levels increased when high tide occurred at 5pm and by 5.30pm on the 6th the whole of Greymouth and Blaketown was flooded by mud and water.

Affected LifelineWater flowed down Boundary Street and flooded much of the lower town.

DamageMany buildings were torn off their foundations and washed away.

Affected LifelineThe bridge between Blaketown and Greymouth was swept away isolating the two towns.

DamageThe embankment and wharf were washed away.

CommentThe Grey River flooded nearly to the top of the sheet piling.

CommentIt was considered to be the highest flood in the memory of the oldest European on the coast and many of the older established Maori in the area.

DamageNearly the whole length of the costly embankment that had only just been completed was destroyed.

EvacueesMany people had to be evacuated in boats.

CommentSandbags were used to contain the flood water.

ImpactFrom the lower end of the wharf about 200m of protective planks had been forced inwards towards the river and in some places were lying almost horizontally. Further along, another section was completely destroyed and washed away, whilst the upper section of the Wharf was greatly loosened. The current had scoured a deep channel in the gravel where the piles were driven.

CommentBy 8.30pm water levels had fallen.

FloodingFlooding at Grey Valley
Comments:

DamageAt the Twelve Mile township all buildings were more than half covered with water with many being destroyed.

Stock DamageAll horses, cattle and sheep were lost in the Twelve Mile area

Affected LifelineA bridge was washed away at Redjacks and Omoto racecourse

DamageTwo houses were swept away at the junction of the Arnold and Grey Rivers.

Affected LifelineMany landslips occurred along the road between Greymouth and the Arnold River, and Coal Creek Flat was completely submerged by floodwaters.

CasualtiesA boy at Coal Creek drowned

FloodingFlooding at Nelson Creek
Map Location: -42.4052 171.51152
Comments:

Property DamageA store, hotel and goods were lost.

CasualtiesA man at Nelson Creek drowned

References

Benn, J. West Coast Regional Council Flood Data from 1846-1990 (CD Rom).
Benn, J.L. (1990). A Chronology of Flooding on the West Coast, South Island, New Zealand 1846-1990.
Benn, J.L. (n.d.) Major Flood Events in Greymouth, New Zealand: 1862-1988. West Coast Regional Council
Headline: Another Flood at Greymouth.
The West Coast Times, 11 November 1867.