NZ Historic Weather Events Catalogue

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ModerateMay 1917 Otago and Southland Flooding ( 1917-05-26 )

5-50 years

Rains was severe throughout Otago and was accompanied by the flooding of rivers, loss of stock and damage to property in many places.

South Island

Multi HazardMulti Hazard at South Island
Duration:   5  days - From the 26th to the 30th of May.
Comments:

Otago

Heavy RainHeavy Rain at Otago
Comments:

CommentRain was still falling on the high country on the 28th.

FloodingFlooding
Comments:

CommentThere were very heavy floods in the province of Otago.

CommentTaieri and Waipori Rivers were both in high flood on the 27th.

Affected LifelineThe railway lines at Lovell's Flat and Clarksville were covered with water on the evening of the 27th.

Affected LifelineThe Main South railway line was still interrupted on the 29th.

Affected LifelineOn the Catlins River branch railway linethere was a break near Otanomomo which was repaired. But there were no trains beyond Owaka due to a number of slips and washouts.

Affected LifelineThe roads to Whare Flat from Silver Stream and Flagstaff were closed. There were slips and washouts at Kay's Bridge and Darky's Gully and all fords were destroyed.

FloodingFlooding at Allanton
Map Location: -45.918208 170.25344
Comments:

Affected LifelineWater was 4 ft (1.22 m) over the railway line on the 28th.

ImpactWater reached half way up the windows of Allanton Hotel. The stationmaster's residence and the surfacemen's huts were surrounded.

Affected LifelineAllanton station yard and platform were scoured out badly.

FloodingFlooding at Berwick
Map Location: -45.944896 170.106376
Comments:

ImpactThere was big overflow from Mill Creek and low-lying land was flooded.

ImpactTownship badly flooded by Mill Creek and Waipori River. Several houses were completely flooded and the schoolhouse was surrounded by water. Some houses were flooded three quarters of the way up the walls.

Affected LifelineRoad communication was cut off on all sides. The roads from Henley to Berwick and Berwick to Maungatua was covered with some feet of water.

CommentIt was considered the biggest flood in 40 years.

Stock DamageAt Berkely Estate, one farmer lost 200 sheep.

FloodingFlooding at Clutha River
Map Location: -46.203535 169.699318
Comments:

Physical CharacteristicFrom a reconstructed discharge curve, Clutha River had a discharge of 118,000 cusecs (3341 cumecs) at Balclutha, gauged at old road bridge. The catchment area was 8100 sq miles (20,979 km^2).

Physical CharacteristicFrom a reconstructed discharge curve, Clutha River had a discharge of 42,000 cusecs (1189 cumecs) at Alexandra. The catchment area was 5315 sq miles (13,766 km^2) and gauge height was 12 ft 10 in (3.91 m).

CommentClutha River reported to be running very high

Heavy RainHeavy Rain at Dunedin
Map Location: -45.87911 170.502707
Comments:

Physical CharacteristicIn the upper watershed of Leith, there was almost 2 in (5.08 cm) of rain during the night of the 26th night.

Physical CharacteristicMusselburgh pumping station recorded 1.14 in (2.90 cm) of rain in 14 hours from 7pm on the 26th to 9am on the 27th.

Physical CharacteristicOpoho recorded 150 points (5.29 cm) of rain in 14 hours from 7pm on the 26th to 9am on the 27th.

CommentA downpour of unusually severe rain commenced early on the evening of the 26th, and continued steadily throughout the night. There was a slight easing on the 27th, but intervals of heavy showers continued.

CommentRainfall in upper reaches of the Leith was extremely heavy all through the night on the 27th. The downpour was stated to be most severe since that which caused the flood in North-East Valley on Christmas Day in 1911.

FloodingFlooding
Comments:

ImpactThe Leith and other streams in the neighbourhood were running at great height.

ImpactSurface drainage occurred off higher levels which lead to the rapid rise of The Leith and general saturation of lower levels.

LandslideLandslide
Comments:

Affected LifelineThere was a small landslip on the far side of Caversham Hill above saleyards. It carried away a fourteen inch main that brought the water supply into the city from the Southern Reservoir.

Affected LifelineA number of people on the higher levels at St. Clair were without water for five to six hours.

FloodingFlooding at Hindon
Map Location: -45.729685 170.305358
Comments:

Affected LifelineThe Lee Stream horse bridge was badly twisted.

LandslideLandslide
Comments:

CommentA slip occurred at Machine Creek.

LandslideLandslide at Kaitangata
Map Location: -46.283362 169.855758
Comments:

Affected LifelineThe Kaitangata Coal Company railway line to Stirling was badly damaged and it was estimated that it would take 10 days before it would be fit for traffic again.

Affected LifelineThe Taratu branch railway line also suffered damage.

FloodingFlooding at Lawrence
Map Location: -45.914289 169.691279
Comments:

CommentThe creeks were all in flood.

Affected LifelineConsiderable portions of the main road was under water.

Affected LifelineThere was a washout on the railway line between Lawrence and Beaumont caused by flooding of Bowler's Creek.

FloodingFlooding at Middlemarch
Map Location: -45.508281 170.125395
Comments:

CommentThe flood in Middlemarch was one of the most severe for many years.

Heavy RainHeavy Rain at Milton
Map Location: -46.123263 169.966084
Comments:

CommentHeavy rain commenced on the evening of the 26th and continued until the morning of the 28th.

FloodingFlooding
Comments:

ImpactThe low-lying country of the Tokomairiro Plain was quickly inundated. Tokomairiro River overflowed its banks and dammed-up waters flooded large stretches of country between Milton, Tokoiti, Clarksville and Glenore.

Stock DamageThere were no especially severe stock losses reported. One farmer lost four young cattle and another lost several sheep.

Crop DamageOne farmer lost 15 acres of turnips.

Affected LifelineThe Waronui Coal Company railway between Milton and Tokoiti was completely submerged and the train service was suspended on the 28th.

CommentWaronui Valley was a sheet of water from one side to other at the height of flood on the 26th.

Affected LifelineSome cars were stranded in Milton on the 27th by flood waters.

Affected LifelineThe main road between Milton and Clarksville and also on to Glenore was submerged in several places.

EvacueesResidents of two or three homes had to leave when they were flooded out.

Affected LifelineThe township had only two low-lying streets which flooded.

FloodingFlooding at Momona
Map Location: -45.917509 170.223166
Comments:

EvacueesSeveral residents vacated their homes on the night of the 28th.

FloodingFlooding at Mosgiel
Map Location: -45.882205 170.333108
Comments:

CommentSilver Stream and Owhiro Stream both rose bank high.

Physical CharacteristicOne farmhouse along the road from Mosgiel to Outram had water up to 4 ft (1.22 m) in it.

FloodingFlooding at Otokia
Map Location: -45.949801 170.189367
Comments:

Affected LifelineWater was across the Main South Road and Station Road was also flooded.

CommentFloodwaters rose higher on the afternoon of the 29th.

ImpactSome five chains of the river bank gave way and water spread over the land from Henley to Momona.

ImpactPeople were rescued from inundated houses by boat.

Stock DamageStock losses were reported.

DamageThe Otokia store had flood waters inside on the 28th and a good deal of damage was done to stocks on the lower floor.

ImpactThe manse was surrounded and was impossible to reach from road.

Affected LifelineThere was a serious washout near Otokia bridge.

FloodingFlooding at Outram
Map Location: -45.859829 170.220115
Comments:

Affected LifelineThe road to Outram was impassable and water was flowing over the road.

Affected LifelineThe Outram railway had water over line at Riverside and it was almost to the top of the railway gate.

Physical CharacteristicNear the Outram bridge, the river was within 1 ft (0.30 m) from the top of the bank.

Affected LifelineOn the 29th the Outram line was still blocked, probably for a few more days.

FloodingFlooding at Owhiro
Map Location: -45.89864 170.303351
Comments:

Affected LifelineThe railway station and surfaceman's residence were surrounded and the road leading up to the station was blocked by a good deal of water.

FloodingFlooding at Pomahaka River
Map Location: -45.879879 169.176184
Comments:

Physical CharacteristicPomahaka River had a discharge of 45,000 cusecs (1274 cumecs) at Black Bridge. This was the largest flood recorded.

FloodingFlooding at Sutton
Map Location: -45.56695 170.12418
Comments:

CommentA surfaceman had never seen so much water pouring through the gorge.

FloodingFlooding at Taieri Plain
Map Location: -45.88401 170.253762
Comments:

CommentStorm struck at 8pm on the 26th with very little warning. Heavy, soaking rain fell continuously throughout the night.

ImpactAll of the small creeks and watercourses were overflowing on the morning of the 27th. There were floodwaters backing up all of Taieri Plain.

CommentOne resident stated that the flood was the most serious in the district since 1892.

Affected LifelineThere was a block on the main line between Allanton and the river beyond Henley on the 30th. There was also a washout on Otokia bridge approach.

CommentFloodwaters began to fall rapidly in East Taieri early on the morning of the 29th, but a lower portion of the plain was still underwater.

Physical CharacteristicThe road between Henley railway station and the Main South Road was still 4 ft (1.22 m) under water on the 29th with no sign of receding.

CommentIn most cases, the benefits of flood water to farms were expected to outweigh the losses.

Affected LifelineMosgiel and Outram were without power on the night of the 27th, as the power supply from Waipori had been cut off. There was also a number of milking machine plants on Taieri which could not be used.

Heavy RainHeavy Rain at Waipori
Map Location: -45.825132 169.882143
Comments:

CommentRain commenced at 7pm on the 26th.

FloodingFlooding
Comments:

CommentThe river rose rapidly and to a great height. It was flowing at its highest beyond question since the power station was erected.

Physical CharacteristicIn five hours the river rose 5-6 ft (1.52-1.83 m) and at 1pm was 10-11ft (3.05-3.35 m) over the weir.

Physical CharacteristicAt its maximum it reached 18 in (0.46 m) higher than ever before.

ImpactAt the power station, water got in and four dynamos got wet. Water reached 5 ft (1.52 m) outside the station and broke through the door and windows at the top end. Water reached 1 ft (0.31 m) inside.

Affected LifelineThere was very little, if any, power available for industrial purposes on the 28th.

Affected LifelineRoslyn Electric Tramway Company stopped running cars from junction with Rattray Street line to Maori Hill because the diesel plant was not available for use.

Affected LifelineThe city was without electric power and light on the 27th. On the 29th, practically all special rate consumers had to reduce or cut off power, and all consumers were under power restrictions.

CommentThe flood was the most severe experienced for 50 years.

ImpactHouses were flooded.

DamageLarge amounts of serious damage resulted from the large volume of water in the power-house.

Damage CostA small bridge just above the power house was washed away at a cost of £400 ($70,250 2009 dollars).

Affected LifelineAlong the Waipori Road, two portions of the highway was washed away and other portions were scoured out.

Damage CostIt was estimated that the damage to Waipori Road would cost £3000 ($526,900 2009 dollars) to repair.

FloodingFlooding at West Taieri
Map Location: -46.023 170.09021
Comments:

ImpactThe contour channel broke in three places, onto people's properties and near West Taieri manse.

CommentMaungatua Hill creeks were very high.

Affected LifelineThe West Taieri bridge approach was considerably scoured and not safe to cross.

Southland

FloodingFlooding at Southland
Comments:

Affected LifelineSouthland railway lines were all clear except Tapanui and Glenham branches which were expected to be blocked for three of four more days from the 29th.

FloodingFlooding at Gore
Map Location: -46.095878 168.927462
Comments:

Physical CharacteristicWater in many shops rose to height of 16 in (0.41 m), but there was little damage done.

Stock DamageStock losses were feared up country. Mandeville reports there heavy losses of sheep in vicinity of Mataura River.

FloodingFlooding at Mataura River
Map Location: -46.159885 168.915782
Comments:

CommentThe flood didn’t cause as much damage as the 1913 flood, due partly to warning given in time. Mr David Dickie gave its height as 0.4 ft (0.12 m) below 1913 flood at Croydon and 5 ft (1.52 m) lower at Mataura. Southland Times stated that it was 10 in (0.25 m) lower at Wyndham.

CommentFlood waters receded considerably on the night of the 28th.

Peak DischargeAnnual maximum flood discharge of the Mataura River was 1390 cumecs (± 280) which occurred on the 28th.

References

Hydrology Annual No.3 1955, Soil Conservation and River Control Council, Welington, New Zealand
Miller, N. J. and McMillan, N. A. (year?). Report on Gore Borough stopbanks Mataura River. Invercargill, N.Z.: Southland Catchment Board.
Municipality of Dunedin. City of Dunedin (New Zealand), Departmental Reports For the Year 1917-1918.
New Zealand Official Year Book 1918, Section II-Climate and Meteorology.
Headline: At Waipori.
Otago Daily Times, 28 May 1917.
Headline: Heavy General Rains.
Otago Daily Times, 28 May 1917.
Headline: In Dunedin.
Otago Daily Times, 28 May 1917.
Headline: Lawrence.
Otago Daily Times, 28 May 1917.
Headline: The City in Darkness.
Otago Daily Times, 28 May 1917.
Headline: The Taieri Flooded.
Otago Daily Times, 28 May 1917.
Headline: Waipori Township.
Otago Daily Times, 28 May 1917.
Headline: Kaitangata Line.
Otago Daily Times, 30 May 1917.
Headline: Notes from Milton.
Otago Daily Times, 30 May 1917.
Headline: Position at Gore.
Otago Daily Times, 30 May 1917.
Headline: The Floods: Electric Power Supply.
Otago Daily Times, 30 May 1917.
Headline: The Floods: Main Line Break.
Otago Daily Times, 30 May 1917.
Headline: The Floods: Railway Traffic.
Otago Daily Times, 30 May 1917.
Headline: The Floods: Roads and Bridges.
Otago Daily Times, 30 May 1917.
Headline: The Floods: Situation on the Taieri.
Otago Daily Times, 30 May 1917.
Surface Water Hydrology of the Mataura River Catchment.

ModerateMay 1917 Otago and Southland Flooding ( 1917-05-26 )

5-50 years

Rains was severe throughout Otago and was accompanied by the flooding of rivers, loss of stock and damage to property in many places.

South Island

Multi HazardMulti Hazard at South Island
Duration:   5  days - From the 26th to the 30th of May.
Comments:

Otago

Heavy RainHeavy Rain at Otago
Comments:

CommentRain was still falling on the high country on the 28th.

FloodingFlooding
Comments:

CommentThere were very heavy floods in the province of Otago.

CommentTaieri and Waipori Rivers were both in high flood on the 27th.

Affected LifelineThe railway lines at Lovell's Flat and Clarksville were covered with water on the evening of the 27th.

Affected LifelineThe Main South railway line was still interrupted on the 29th.

Affected LifelineOn the Catlins River branch railway linethere was a break near Otanomomo which was repaired. But there were no trains beyond Owaka due to a number of slips and washouts.

Affected LifelineThe roads to Whare Flat from Silver Stream and Flagstaff were closed. There were slips and washouts at Kay's Bridge and Darky's Gully and all fords were destroyed.

FloodingFlooding at Allanton
Map Location: -45.918208 170.25344
Comments:

Affected LifelineWater was 4 ft (1.22 m) over the railway line on the 28th.

ImpactWater reached half way up the windows of Allanton Hotel. The stationmaster's residence and the surfacemen's huts were surrounded.

Affected LifelineAllanton station yard and platform were scoured out badly.

FloodingFlooding at Berwick
Map Location: -45.944896 170.106376
Comments:

ImpactThere was big overflow from Mill Creek and low-lying land was flooded.

ImpactTownship badly flooded by Mill Creek and Waipori River. Several houses were completely flooded and the schoolhouse was surrounded by water. Some houses were flooded three quarters of the way up the walls.

Affected LifelineRoad communication was cut off on all sides. The roads from Henley to Berwick and Berwick to Maungatua was covered with some feet of water.

CommentIt was considered the biggest flood in 40 years.

Stock DamageAt Berkely Estate, one farmer lost 200 sheep.

FloodingFlooding at Clutha River
Map Location: -46.203535 169.699318
Comments:

Physical CharacteristicFrom a reconstructed discharge curve, Clutha River had a discharge of 118,000 cusecs (3341 cumecs) at Balclutha, gauged at old road bridge. The catchment area was 8100 sq miles (20,979 km^2).

Physical CharacteristicFrom a reconstructed discharge curve, Clutha River had a discharge of 42,000 cusecs (1189 cumecs) at Alexandra. The catchment area was 5315 sq miles (13,766 km^2) and gauge height was 12 ft 10 in (3.91 m).

CommentClutha River reported to be running very high

Heavy RainHeavy Rain at Dunedin
Map Location: -45.87911 170.502707
Comments:

Physical CharacteristicIn the upper watershed of Leith, there was almost 2 in (5.08 cm) of rain during the night of the 26th night.

Physical CharacteristicMusselburgh pumping station recorded 1.14 in (2.90 cm) of rain in 14 hours from 7pm on the 26th to 9am on the 27th.

Physical CharacteristicOpoho recorded 150 points (5.29 cm) of rain in 14 hours from 7pm on the 26th to 9am on the 27th.

CommentA downpour of unusually severe rain commenced early on the evening of the 26th, and continued steadily throughout the night. There was a slight easing on the 27th, but intervals of heavy showers continued.

CommentRainfall in upper reaches of the Leith was extremely heavy all through the night on the 27th. The downpour was stated to be most severe since that which caused the flood in North-East Valley on Christmas Day in 1911.

FloodingFlooding
Comments:

ImpactThe Leith and other streams in the neighbourhood were running at great height.

ImpactSurface drainage occurred off higher levels which lead to the rapid rise of The Leith and general saturation of lower levels.

LandslideLandslide
Comments:

Affected LifelineThere was a small landslip on the far side of Caversham Hill above saleyards. It carried away a fourteen inch main that brought the water supply into the city from the Southern Reservoir.

Affected LifelineA number of people on the higher levels at St. Clair were without water for five to six hours.

FloodingFlooding at Hindon
Map Location: -45.729685 170.305358
Comments:

Affected LifelineThe Lee Stream horse bridge was badly twisted.

LandslideLandslide
Comments:

CommentA slip occurred at Machine Creek.

LandslideLandslide at Kaitangata
Map Location: -46.283362 169.855758
Comments:

Affected LifelineThe Kaitangata Coal Company railway line to Stirling was badly damaged and it was estimated that it would take 10 days before it would be fit for traffic again.

Affected LifelineThe Taratu branch railway line also suffered damage.

FloodingFlooding at Lawrence
Map Location: -45.914289 169.691279
Comments:

CommentThe creeks were all in flood.

Affected LifelineConsiderable portions of the main road was under water.

Affected LifelineThere was a washout on the railway line between Lawrence and Beaumont caused by flooding of Bowler's Creek.

FloodingFlooding at Middlemarch
Map Location: -45.508281 170.125395
Comments:

CommentThe flood in Middlemarch was one of the most severe for many years.

Heavy RainHeavy Rain at Milton
Map Location: -46.123263 169.966084
Comments:

CommentHeavy rain commenced on the evening of the 26th and continued until the morning of the 28th.

FloodingFlooding
Comments:

ImpactThe low-lying country of the Tokomairiro Plain was quickly inundated. Tokomairiro River overflowed its banks and dammed-up waters flooded large stretches of country between Milton, Tokoiti, Clarksville and Glenore.

Stock DamageThere were no especially severe stock losses reported. One farmer lost four young cattle and another lost several sheep.

Crop DamageOne farmer lost 15 acres of turnips.

Affected LifelineThe Waronui Coal Company railway between Milton and Tokoiti was completely submerged and the train service was suspended on the 28th.

CommentWaronui Valley was a sheet of water from one side to other at the height of flood on the 26th.

Affected LifelineSome cars were stranded in Milton on the 27th by flood waters.

Affected LifelineThe main road between Milton and Clarksville and also on to Glenore was submerged in several places.

EvacueesResidents of two or three homes had to leave when they were flooded out.

Affected LifelineThe township had only two low-lying streets which flooded.

FloodingFlooding at Momona
Map Location: -45.917509 170.223166
Comments:

EvacueesSeveral residents vacated their homes on the night of the 28th.

FloodingFlooding at Mosgiel
Map Location: -45.882205 170.333108
Comments:

CommentSilver Stream and Owhiro Stream both rose bank high.

Physical CharacteristicOne farmhouse along the road from Mosgiel to Outram had water up to 4 ft (1.22 m) in it.

FloodingFlooding at Otokia
Map Location: -45.949801 170.189367
Comments:

Affected LifelineWater was across the Main South Road and Station Road was also flooded.

CommentFloodwaters rose higher on the afternoon of the 29th.

ImpactSome five chains of the river bank gave way and water spread over the land from Henley to Momona.

ImpactPeople were rescued from inundated houses by boat.

Stock DamageStock losses were reported.

DamageThe Otokia store had flood waters inside on the 28th and a good deal of damage was done to stocks on the lower floor.

ImpactThe manse was surrounded and was impossible to reach from road.

Affected LifelineThere was a serious washout near Otokia bridge.

FloodingFlooding at Outram
Map Location: -45.859829 170.220115
Comments:

Affected LifelineThe road to Outram was impassable and water was flowing over the road.

Affected LifelineThe Outram railway had water over line at Riverside and it was almost to the top of the railway gate.

Physical CharacteristicNear the Outram bridge, the river was within 1 ft (0.30 m) from the top of the bank.

Affected LifelineOn the 29th the Outram line was still blocked, probably for a few more days.

FloodingFlooding at Owhiro
Map Location: -45.89864 170.303351
Comments:

Affected LifelineThe railway station and surfaceman's residence were surrounded and the road leading up to the station was blocked by a good deal of water.

FloodingFlooding at Pomahaka River
Map Location: -45.879879 169.176184
Comments:

Physical CharacteristicPomahaka River had a discharge of 45,000 cusecs (1274 cumecs) at Black Bridge. This was the largest flood recorded.

FloodingFlooding at Sutton
Map Location: -45.56695 170.12418
Comments:

CommentA surfaceman had never seen so much water pouring through the gorge.

FloodingFlooding at Taieri Plain
Map Location: -45.88401 170.253762
Comments:

CommentStorm struck at 8pm on the 26th with very little warning. Heavy, soaking rain fell continuously throughout the night.

ImpactAll of the small creeks and watercourses were overflowing on the morning of the 27th. There were floodwaters backing up all of Taieri Plain.

CommentOne resident stated that the flood was the most serious in the district since 1892.

Affected LifelineThere was a block on the main line between Allanton and the river beyond Henley on the 30th. There was also a washout on Otokia bridge approach.

CommentFloodwaters began to fall rapidly in East Taieri early on the morning of the 29th, but a lower portion of the plain was still underwater.

Physical CharacteristicThe road between Henley railway station and the Main South Road was still 4 ft (1.22 m) under water on the 29th with no sign of receding.

CommentIn most cases, the benefits of flood water to farms were expected to outweigh the losses.

Affected LifelineMosgiel and Outram were without power on the night of the 27th, as the power supply from Waipori had been cut off. There was also a number of milking machine plants on Taieri which could not be used.

Heavy RainHeavy Rain at Waipori
Map Location: -45.825132 169.882143
Comments:

CommentRain commenced at 7pm on the 26th.

FloodingFlooding
Comments:

CommentThe river rose rapidly and to a great height. It was flowing at its highest beyond question since the power station was erected.

Physical CharacteristicIn five hours the river rose 5-6 ft (1.52-1.83 m) and at 1pm was 10-11ft (3.05-3.35 m) over the weir.

Physical CharacteristicAt its maximum it reached 18 in (0.46 m) higher than ever before.

ImpactAt the power station, water got in and four dynamos got wet. Water reached 5 ft (1.52 m) outside the station and broke through the door and windows at the top end. Water reached 1 ft (0.31 m) inside.

Affected LifelineThere was very little, if any, power available for industrial purposes on the 28th.

Affected LifelineRoslyn Electric Tramway Company stopped running cars from junction with Rattray Street line to Maori Hill because the diesel plant was not available for use.

Affected LifelineThe city was without electric power and light on the 27th. On the 29th, practically all special rate consumers had to reduce or cut off power, and all consumers were under power restrictions.

CommentThe flood was the most severe experienced for 50 years.

ImpactHouses were flooded.

DamageLarge amounts of serious damage resulted from the large volume of water in the power-house.

Damage CostA small bridge just above the power house was washed away at a cost of £400 ($70,250 2009 dollars).

Affected LifelineAlong the Waipori Road, two portions of the highway was washed away and other portions were scoured out.

Damage CostIt was estimated that the damage to Waipori Road would cost £3000 ($526,900 2009 dollars) to repair.

FloodingFlooding at West Taieri
Map Location: -46.023 170.09021
Comments:

ImpactThe contour channel broke in three places, onto people's properties and near West Taieri manse.

CommentMaungatua Hill creeks were very high.

Affected LifelineThe West Taieri bridge approach was considerably scoured and not safe to cross.

Southland

FloodingFlooding at Southland
Comments:

Affected LifelineSouthland railway lines were all clear except Tapanui and Glenham branches which were expected to be blocked for three of four more days from the 29th.

FloodingFlooding at Gore
Map Location: -46.095878 168.927462
Comments:

Physical CharacteristicWater in many shops rose to height of 16 in (0.41 m), but there was little damage done.

Stock DamageStock losses were feared up country. Mandeville reports there heavy losses of sheep in vicinity of Mataura River.

FloodingFlooding at Mataura River
Map Location: -46.159885 168.915782
Comments:

CommentThe flood didn’t cause as much damage as the 1913 flood, due partly to warning given in time. Mr David Dickie gave its height as 0.4 ft (0.12 m) below 1913 flood at Croydon and 5 ft (1.52 m) lower at Mataura. Southland Times stated that it was 10 in (0.25 m) lower at Wyndham.

CommentFlood waters receded considerably on the night of the 28th.

Peak DischargeAnnual maximum flood discharge of the Mataura River was 1390 cumecs (± 280) which occurred on the 28th.

References

Hydrology Annual No.3 1955, Soil Conservation and River Control Council, Welington, New Zealand
Miller, N. J. and McMillan, N. A. (year?). Report on Gore Borough stopbanks Mataura River. Invercargill, N.Z.: Southland Catchment Board.
Municipality of Dunedin. City of Dunedin (New Zealand), Departmental Reports For the Year 1917-1918.
New Zealand Official Year Book 1918, Section II-Climate and Meteorology.
Headline: At Waipori.
Otago Daily Times, 28 May 1917.
Headline: Heavy General Rains.
Otago Daily Times, 28 May 1917.
Headline: In Dunedin.
Otago Daily Times, 28 May 1917.
Headline: Lawrence.
Otago Daily Times, 28 May 1917.
Headline: The City in Darkness.
Otago Daily Times, 28 May 1917.
Headline: The Taieri Flooded.
Otago Daily Times, 28 May 1917.
Headline: Waipori Township.
Otago Daily Times, 28 May 1917.
Headline: Kaitangata Line.
Otago Daily Times, 30 May 1917.
Headline: Notes from Milton.
Otago Daily Times, 30 May 1917.
Headline: Position at Gore.
Otago Daily Times, 30 May 1917.
Headline: The Floods: Electric Power Supply.
Otago Daily Times, 30 May 1917.
Headline: The Floods: Main Line Break.
Otago Daily Times, 30 May 1917.
Headline: The Floods: Railway Traffic.
Otago Daily Times, 30 May 1917.
Headline: The Floods: Roads and Bridges.
Otago Daily Times, 30 May 1917.
Headline: The Floods: Situation on the Taieri.
Otago Daily Times, 30 May 1917.
Surface Water Hydrology of the Mataura River Catchment.