NZ Historic Weather Events Catalogue

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ModerateNovember 1948 South Island Flooding ( 1948-11-01 )

30 years

Heavy rain and melting of snow on the ranges lead to flooding in the West Coast, Canterbury, Otago and Southland. Roads were blocked by large slips over a wide area.

South Island

Multi HazardMulti Hazard at South Island
Duration:   3  days - From the 1st to the 3rd of November.
Comments:

West Coast

Multi HazardMulti Hazard at West Coast
Comments:

Affected LifelineThe highway between Reefton and Inangahua was impassable on the 2nd due to flooding and landslides.

Canterbury

FloodingFlooding at Canterbury
Comments:

Affected LifelineRoad from Pukaki to Mount Cook was completely impassable on the night of the 2nd.

Affected LifelineWater affected the State Highway between Omarama and Fairlie.

Affected LifelineThe road from Hermitage to Lake Pukaki was flooded.

Affected LifelineThe raod from Lake Pukaki to Omarama was impassable on the afternoon of the 3rd.

LandslideLandslide
Comments:

Affected LifelineThe road from Otira to Arthur's Pass was closed because of slips.

FloodingFlooding at Hakataramea River
Map Location: -44.682166 170.5605
Comments:

CommentHakataramea River was carrying a great volume of water down the Hakataramea Gorge. Hakataramea bridge at Kurow was trembling with the pressure of the water.

EvacueesThree homesteads were evacuated due to flooding in the vicinity of Hakataramea.

ImpactIn several places below Hakataramea, the river burst its banks, causing widespread flooding of low-lying areas.

FloodingFlooding at Waitaki River
Map Location: -44.896262 170.92593
Comments:

Physical CharacteristicA tremendous volume of water was roaring over the sill of the Waitaki hydro-electric dam on the 3rd. The flow was 6 ft (1.83 m) high and was the discharge was estimated at 75,000 cusecs (2124 cumecs).

Physical CharacteristicThe previous record height of water coming over dam was 5 ft 8 in (1.73 m) during the 1946 flood.

CommentThe Waitaki River was not "desperately flooded" as the rise had been gradual since the 29th of October.

Stock DamageThere were no reported stock losses.

DamageDamage to the roads was believed to be as great as it was two years ago.

CommentA resident who had lived in the district for the past five years said he had never seen so much water in the Waitaki.

LandslideLandslide
Comments:

Affected LifelineThere were numerous slips that occurred on back country roads.

Otago

FloodingFlooding at Otago
Comments:

CommentOne of the worst floods for 30 years swept the Clutha Valley from the Lakes to mouth of the river. It was caused by melting snow and heavy rain in the western parts of the province.

CommentThere was a major flood in Clutha River. It was the largest flood since 1878 in the upper reaches.

ImpactThere was flooding at Inchclutha and Paretai.

DamageThere was extensive damage to farms.

Affected LifelineRoads and highways were flooded and extensively damaged.

CasualtiesThere were no casualities.

Stock DamageMany cattle and sheep drowned.

Damage CostDamage to the river protection works in the Balclutha area was £33,000 ($2,150,900 2009 dollars).

Affected LifelineRoads were flooded and there was numerous slips on highways in all parts of the province on the afternoon of the 2nd.

Affected LifelineThe stretch of road between Lowburn and Queensbury (which was almost ready for sealing) was under water, and underwent a lot of damage.

Affected LifelineIn Wanaka and Hawea, the telephone service was disrupted from 2pm-10pm on the 2nd, owing to a pole being washed out near Lowburn.

Affected LifelineThe road known as St. Bathans loop, between Becks and St. Bathans was impassable owing to a washout.

Affected LifelineThe road between Lumsden and Kingston was flooded on the night of the 2nd.

Affected LifelineThere was a temporary blockage of traffic between Dunedin and Queenstown on the 3rd. Near Ettrick, Clutha River banked up a creek and flooded the State Highway with 2 ft (0.61 m) of water.

Affected LifelineMore water was reported in the flooded areas of the Balclutha, Stirling, Kaitangata and Balclutha, Finegand, Kaka Point roads on the 3rd.

Affected LifelineLindis Pass road had many bad washouts.

ImpactFlood waters turned rivers of Central Otago into raging torrents and were carrying large quantities of debris.

Affected LifelineBridges were swept away or dangerously weakened.

CommentOn the 2nd, at both at Cromwell and Alexandram, the flood waters rose to levels that hadn't been reached for 30 years or more.

LandslideLandslide
Comments:

Affected LifelineSmall slips occurred in the Cromwell and Kawarau Gorge. Sections of the road were being prepared for sealing and were likely to be dangerously slippery and falls of rock made conditions hazardous.

FloodingFlooding at Albert Town
Map Location: -44.685399 169.191265
Comments:

Affected LifelineThe Albert Town bridge was endangered.

ImpactA resident living above Albert Town bridge was marooned. Another resident in Albert Town was in danger and believed only the change in the wind (to the south) saved his property.

FloodingFlooding at Alexandra
Map Location: -45.253862 169.375391
Comments:

Peak River LevelThe peak level of Clutha River at Alexandra was 31 ft 8 in (9.65 m) at 9am on the morning of the 3rd. The previous record level was 26 ft 11 in (8.20 m) during the 1946 flood.

ImpactWhen it reached its peak, water to a depth of several inches invaded one house on the flat at Alexandra.

Stock DamageNo stock losses were reported in the district.

Physical CharacteristicFrom a reconstructed discharge curve, Clutha River had a discharge of 90,000 cusecs (2549 cumecs) at Alexandra, with a catchment area of 5315 sq miles ( km^2) and a gauge height of 31 ft 8 in. (Hydrology Annual No.3 1955, Soil Conservation and River Control Council, Wellington, New Zealand)

Peak DischargeAt Alexandra, the river rose 7 in (17.78 cm) per hour and had a peak discharge of 77,725 cusecs (2201 cumecs). (Cowie, C.A; Attwood, A.K.(1957) FLOODS in NEW ZEALAND 1920 -53, The Soil Conservation and Rivers Control Council, Wellington, New Zealand,239p.)

Affected LifelineIn Alexandra, some roads were impassable or in dangerous condition on the night of the 2nd.

Peak Wind SpeedAlexandra experienced high winds on the 1st with a highest gust of 66 knots (122 km/hr) at a direction of 350 degrees true.

FloodingFlooding at Balclutha
Map Location: -46.23013 169.733472
Comments:

Physical CharacteristicLate on the night of the 2nd, the river gauge at Balclutha stood at 66 ft (20.12 m) but main force of flood still hadn't reached the town.

Damage CostThe cost of the flood in the lower Clutha was estimated at £27,500 ($1,792,400 2009 dollars) by engineer on 21 December 1948.

Physical CharacteristicFrom a reconstructed discharge curve, Clutha River had a discharge of 95,000 cusecs ( cumecs) at Balclutha, gauged at old road bridge. The catchment area was 8100 sq miles (20,979 km^2).

Peak DischargeAt Balclutha, the Clutha River rose to a depth of 72.25 ft (22.02 m) with a peak discharge estimated at 94,000 cusecs (2662 cumecs). It was the highest flood since 1919.

FloodingFlooding at Barnego
Map Location: -46.229256 169.717954
Comments:

Affected LifelineThe Balclutha to Clydevale River road was impassable all day on the 3rd, due to flooding centered at Barnego.

ImpactThe stop banks in the Barnego district overtopped and were breached in two places. The whole flats became inundated.

FloodingFlooding at Cardrona Valley
Map Location: -44.879797 168.99807
Comments:

Affected LifelineThe highway between Cromwell and Wanaka was flooded at Ballantyne's bridge over the Cardrona River and was impassable.

Affected LifelineFlooding and washouts in Cardrona Valley made use of the Crown Range route impossible.

Affected LifelineCrown Range Road still was impassable with washouts in the Cardrona Valley on the 3rd.

FloodingFlooding at Cromwell
Map Location: -45.040741 169.203073
Comments:

CommentKawarau River was in high flood.

Physical CharacteristicAt Cromwell, on the night of the 2nd, both the Kawarau and Clutha Rivers were running 20 ft (6.10 m) above normal, with discoloured water carrying masses of debris, large trees and the occasional drowned animals.

Stock DamageOne farmer lost 50 sheep from an island that couldn't be reached on the morning of the 2nd.

CommentOn the morning of the 3rd, the Clutha River showed a further rise, and appeared to reach a peak later in the day.

CommentFrom the night of the 2nd, the Kawarau River subsided slowly.

ImpactOn the 3rd, both rivers were still discoloured and carrying a large amount of debris.

EvacueesResidents of two houses on the west side of the Clutha River, near Lowburn, were forced to evacuate on the night of the 2nd as flood waters entered their houses.

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

Physical CharacteristicDunedin recorded over 0.5 in (1.27 cm) of rain in 12 hours on the 2nd.

ImpactSteadiness of rain prevented flooding to any noticeable degree, although some sections of drainage system were taxed almost to the limit.

FloodingFlooding at Inch Clutha
Map Location: -46.288561 169.780158
Comments:

ImpactBusiness was slack during day as people went to join volunteer forces in the threatened area of the river.

Peak River LevelBy late evening on the 3rd, the Clutha River had reached its maximum of a little over 72 ft (21.95 m) and stayed steady at that mark. It was 18 in (0.46 m) above the level of the 1946 flood.

CommentInch Clutha stopbanks were generally overtopped, despite the extensive sandbagging.

ImpactAt 11pm on the 3rd, a break reported in the Matau district. Water was coming through over a distance of 15 chains (300 m).

EvacueesThere was an evacuation of a majority of settlers from Inch Clutha and other threatened areas by nightfall on the 3rd.

ImpactTwo boats were used at one stage to rescue people who were marooned.

ImpactFrom the hillside on the northern side of the main highway bridge at Balclutha, the whole valley up the river was a solid sheet of discoloured water.

ImpactDown the main flow huge branches were swept along at a staggering rate, along with an occasional dead sheep. The ends of electric cables, whole trees and a dog kennel were among the debris which was carried down.

Affected LifelineMatau bridge was throught to have slightly buckled under the pressure from a log jam.

ImpactWaitepeka Creek swirled in a turbid torrent in the direction opposite to its customary flow. This was caused by the pressure of water in Clutha River backing up the mouth of the creek.

ImpactSeepage caused a certain amount of surface water to appear near the Balclutha approach to the main highway bridge.

ImpactWater was encroaching onto the showgrounds on the evening of the 3rd.

Affected LifelineThe aerodrome was well under water.

Affected LifelineImpassable roads on the evening of the 3rd, included Balclutha to Clydevale, at Barnego; Balclutha to Kaka Point, at Finegand; Balclutha to Kaitangata, at Hasborough Road and Stirling.

Heavy RainHeavy Rain at Kingston
Map Location: -45.332483 168.71716
Comments:

Physical CharacteristicKingston recorded 2.42 in (6.15 cm) of rain.

Heavy RainHeavy Rain at Lake Hawea
Map Location: -44.61261 169.265967
Comments:

Physical CharacteristicHawea Flats recorded 3.28 in (8.33 cm) of rain in 24 hours.

Peak DischargeAt Lake Hawea the peak discharge was 7500 cusecs (212 cumecs).

CommentLake Hawea was higher than it had been for many years.

Heavy RainHeavy Rain at Makarora
Map Location: -44.23631 169.233253
Comments:

Physical CharacteristicMakarora recorded 5.09 in (12.93 cm) of rain in 24 hours.

Physical CharacteristicMakarora recorded nearly 6.5 in (16.51 cm) of rain in two days.

FloodingFlooding
Comments:

Physical CharacteristicMakarora, at the head of Lake Wanaka, rose 12 ft (3.66 m) above normal and flooded the main streets of Wanaka.

LandslideLandslide
Comments:

Affected LifelineThere was an extensive slip on the road between Hawea and Makarora at Camp Creek. Between the Neck and Makarora the whole hillside was reported to be moving.

Heavy RainHeavy Rain at Queenstown
Map Location: -45.041441 168.645105
Comments:

Physical CharacteristicQueenstown recorded 3.27 in (8.31 cm) of rain in 24 hours to 9:30am on the 2nd.

CommentThis rainfall was the heaviest for a number of years.

FloodingFlooding
Comments:

Physical CharacteristicLake Wakatipu rose 6 ft (1.83 m) above normal and had been rising since Labour weekend (23-25th October).

CommentThe water was almost to the level of the town wharf.

DamageThere was widespread damage reported to all roads in the county and in the hill area of town, roads were well scoured.

Peak DischargeAt Lake Wakatipu the peak discharge was 22,750 cusecs (644 cumecs).

Physical CharacteristicThe inflow to Lake Wakatipu was 67,000 cusecs (1897 cumecs).

Heavy RainHeavy Rain at Wanaka
Map Location: -44.70636 169.1239
Comments:

CommentHeavy rain fell continuously in the Wanaka district for 48 hours and ceased at a late hour on the night of the 2nd.

Physical CharacteristicWanaka recorded 3.01 in (7.65 cm) of rain in 24 hours to 9pm on the 2nd.

Physical CharacteristicWanaka recorded 0.99 in (2.51 cm) of rain on the 2nd.

FloodingFlooding
Comments:

CommentFloods in the district were described as the worst since 1919.

Physical CharacteristicThe Wanaka lake level rose 12 ft (3.66 m) in 20 hours.

ImpactThe lake overflowed on to main road at the wharf, which was completely under water on the night of the 2nd.

Affected LifelineThe Cardrona bridge, on the main highway from Wanaka, was destroyed when its piles were washed away.

Affected LifelineA washout at Lochar Creek, on the main road to Wanaka, resulted in a fissure 30 ft (9.14 m) long and 10 ft (3.05 m) deep in the bitumen road.

CommentIn West Wanaka, the Matukituki River was reported to be a roaring torrent.

ImpactA mass of driftwood over one mile long was floating down the lake.

Affected LifelineRoads and bridges in the district suffered considerable damage as swollen streams and rivers battered at piles and washed away approaches.

Affected LifelineOne of the worst examples of scouring occurred at Wash Creek, near Gravelly Gully, on the main highway between Cromwell and Wanaka. The road was scoured out to depth of 8 ft (2.44 m) and a width of 20 ft (6.10 m), with a large volume of water sweeping through the channel created.

CommentLake Wanaka reached a maximum water level at 6am on the 3rd.

Affected LifelineAt Waterfall Creek on the main road to Glendhu the ford was badly scoured out and impassable.

Affected LifelineBallantyne's bridge (the main bridge into Wanaka) sunk in the middle. Cardrona River was right across the road, and scoured out the approaches to the bridge on both sides, leaving the bridge impassable for some time.

Peak Water LevelMaximum level of Lake Wanaka was 12 ft (3.66 m) at the wharf and 8 in (0.20 m) higher than it reached during the flood of 1946.

Physical CharacteristicThe inflow to Lake Wanaka was estimated 120,000 cusecs (3398 cumecs).

Peak DischargeAt the outfall of Lake Wanaka the peak discharge was 25,350 cusecs (718 cusecs).

LandslideLandslide
Comments:

Affected LifelineThe usual mail service from Wanaka to Makarora was unable to get through on the 3rd because of bad slips and washouts.

Southland

FloodingFlooding at Western Southland
Comments:

Affected LifelineThe western district of Southland was completely isolated by road on the 3rd for five to six hours.

Affected LifelineRoad traffic was held up at the iron bridge on the highway between Invercargill and Riverton. Traffic was also held up at Lochiel, Winton, Centrebush, Benmore and Dipton on the highway between Invercargill and Queenstown. Roads were expected to be clear on the night of the 3rd.

Stock DamageThere were no stock losses reported.

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

Peak DischargeThe annual maximum flood discharge of the Mataura River was 396 cumecs on the 2nd.

FloodingFlooding at Oreti River
Map Location: -46.304952 168.27359
Comments:

CommentOreti River was in high flood.

References

Cowie, C.A; Attwood, A.K.(1957) FLOODS in NEW ZEALAND 1920 -53, The Soil Conservation and Rivers Control Council, Wellington, New Zealand,239p.
New Zealand Meteorlogical Service, Technical Information Circular No. 191, Extreme Wind Gusts,
Headline: Flood Damage: Cost of Repair Work.
Otago Daily Times, 22 December 1949.
Headline: Clutha River in Flood: Rain and Melting Snow Cause Danger in Lower Reaches.
Otago Daily Times, 3 November 1948.
Headline: Damage to Roads and Bridges.
Otago Daily Times, 3 November 1948.
Headline: Flood Level of 1946 Exceeded.
Otago Daily Times, 3 November 1948.
Headline: Half Inch of Rain in City.
Otago Daily Times, 3 November 1948.
Headline: Roads Blocked by Large Slips Over Wide Area.
Otago Daily Times, 3 November 1948.
Headline: Flood Waters Reach Peak: Stop-banks not High Enough to Save Inch Clutha.
Otago Daily Times, 4 November 1948.
Headline: Flooding in Waitaki Area.
Otago Daily Times, 4 November 1948.
Headline: Heavy Rain Brings Lake Wakatipu Up.
Otago Daily Times, 4 November 1948.
Headline: Kawarau and Clutha Falling.
Otago Daily Times, 4 November 1948.
Headline: Many Roads Impassable.
Otago Daily Times, 4 November 1948.
Headline: Record Level at Alexandra.
Otago Daily Times, 4 November 1948.
Headline: Reduced Flow into Wanaka.
Otago Daily Times, 4 November 1948.
Headline: Roads Blocked in Southland.
Otago Daily Times, 4 November 1948.
Surface Water Hydrology of the Mataura River Catchment.

ModerateNovember 1948 South Island Flooding ( 1948-11-01 )

30 years

Heavy rain and melting of snow on the ranges lead to flooding in the West Coast, Canterbury, Otago and Southland. Roads were blocked by large slips over a wide area.

South Island

Multi HazardMulti Hazard at South Island
Duration:   3  days - From the 1st to the 3rd of November.
Comments:

West Coast

Multi HazardMulti Hazard at West Coast
Comments:

Affected LifelineThe highway between Reefton and Inangahua was impassable on the 2nd due to flooding and landslides.

Canterbury

FloodingFlooding at Canterbury
Comments:

Affected LifelineRoad from Pukaki to Mount Cook was completely impassable on the night of the 2nd.

Affected LifelineWater affected the State Highway between Omarama and Fairlie.

Affected LifelineThe road from Hermitage to Lake Pukaki was flooded.

Affected LifelineThe raod from Lake Pukaki to Omarama was impassable on the afternoon of the 3rd.

LandslideLandslide
Comments:

Affected LifelineThe road from Otira to Arthur's Pass was closed because of slips.

FloodingFlooding at Hakataramea River
Map Location: -44.682166 170.5605
Comments:

CommentHakataramea River was carrying a great volume of water down the Hakataramea Gorge. Hakataramea bridge at Kurow was trembling with the pressure of the water.

EvacueesThree homesteads were evacuated due to flooding in the vicinity of Hakataramea.

ImpactIn several places below Hakataramea, the river burst its banks, causing widespread flooding of low-lying areas.

FloodingFlooding at Waitaki River
Map Location: -44.896262 170.92593
Comments:

Physical CharacteristicA tremendous volume of water was roaring over the sill of the Waitaki hydro-electric dam on the 3rd. The flow was 6 ft (1.83 m) high and was the discharge was estimated at 75,000 cusecs (2124 cumecs).

Physical CharacteristicThe previous record height of water coming over dam was 5 ft 8 in (1.73 m) during the 1946 flood.

CommentThe Waitaki River was not "desperately flooded" as the rise had been gradual since the 29th of October.

Stock DamageThere were no reported stock losses.

DamageDamage to the roads was believed to be as great as it was two years ago.

CommentA resident who had lived in the district for the past five years said he had never seen so much water in the Waitaki.

LandslideLandslide
Comments:

Affected LifelineThere were numerous slips that occurred on back country roads.

Otago

FloodingFlooding at Otago
Comments:

CommentOne of the worst floods for 30 years swept the Clutha Valley from the Lakes to mouth of the river. It was caused by melting snow and heavy rain in the western parts of the province.

CommentThere was a major flood in Clutha River. It was the largest flood since 1878 in the upper reaches.

ImpactThere was flooding at Inchclutha and Paretai.

DamageThere was extensive damage to farms.

Affected LifelineRoads and highways were flooded and extensively damaged.

CasualtiesThere were no casualities.

Stock DamageMany cattle and sheep drowned.

Damage CostDamage to the river protection works in the Balclutha area was £33,000 ($2,150,900 2009 dollars).

Affected LifelineRoads were flooded and there was numerous slips on highways in all parts of the province on the afternoon of the 2nd.

Affected LifelineThe stretch of road between Lowburn and Queensbury (which was almost ready for sealing) was under water, and underwent a lot of damage.

Affected LifelineIn Wanaka and Hawea, the telephone service was disrupted from 2pm-10pm on the 2nd, owing to a pole being washed out near Lowburn.

Affected LifelineThe road known as St. Bathans loop, between Becks and St. Bathans was impassable owing to a washout.

Affected LifelineThe road between Lumsden and Kingston was flooded on the night of the 2nd.

Affected LifelineThere was a temporary blockage of traffic between Dunedin and Queenstown on the 3rd. Near Ettrick, Clutha River banked up a creek and flooded the State Highway with 2 ft (0.61 m) of water.

Affected LifelineMore water was reported in the flooded areas of the Balclutha, Stirling, Kaitangata and Balclutha, Finegand, Kaka Point roads on the 3rd.

Affected LifelineLindis Pass road had many bad washouts.

ImpactFlood waters turned rivers of Central Otago into raging torrents and were carrying large quantities of debris.

Affected LifelineBridges were swept away or dangerously weakened.

CommentOn the 2nd, at both at Cromwell and Alexandram, the flood waters rose to levels that hadn't been reached for 30 years or more.

LandslideLandslide
Comments:

Affected LifelineSmall slips occurred in the Cromwell and Kawarau Gorge. Sections of the road were being prepared for sealing and were likely to be dangerously slippery and falls of rock made conditions hazardous.

FloodingFlooding at Albert Town
Map Location: -44.685399 169.191265
Comments:

Affected LifelineThe Albert Town bridge was endangered.

ImpactA resident living above Albert Town bridge was marooned. Another resident in Albert Town was in danger and believed only the change in the wind (to the south) saved his property.

FloodingFlooding at Alexandra
Map Location: -45.253862 169.375391
Comments:

Peak River LevelThe peak level of Clutha River at Alexandra was 31 ft 8 in (9.65 m) at 9am on the morning of the 3rd. The previous record level was 26 ft 11 in (8.20 m) during the 1946 flood.

ImpactWhen it reached its peak, water to a depth of several inches invaded one house on the flat at Alexandra.

Stock DamageNo stock losses were reported in the district.

Physical CharacteristicFrom a reconstructed discharge curve, Clutha River had a discharge of 90,000 cusecs (2549 cumecs) at Alexandra, with a catchment area of 5315 sq miles ( km^2) and a gauge height of 31 ft 8 in. (Hydrology Annual No.3 1955, Soil Conservation and River Control Council, Wellington, New Zealand)

Peak DischargeAt Alexandra, the river rose 7 in (17.78 cm) per hour and had a peak discharge of 77,725 cusecs (2201 cumecs). (Cowie, C.A; Attwood, A.K.(1957) FLOODS in NEW ZEALAND 1920 -53, The Soil Conservation and Rivers Control Council, Wellington, New Zealand,239p.)

Affected LifelineIn Alexandra, some roads were impassable or in dangerous condition on the night of the 2nd.

Peak Wind SpeedAlexandra experienced high winds on the 1st with a highest gust of 66 knots (122 km/hr) at a direction of 350 degrees true.

FloodingFlooding at Balclutha
Map Location: -46.23013 169.733472
Comments:

Physical CharacteristicLate on the night of the 2nd, the river gauge at Balclutha stood at 66 ft (20.12 m) but main force of flood still hadn't reached the town.

Damage CostThe cost of the flood in the lower Clutha was estimated at £27,500 ($1,792,400 2009 dollars) by engineer on 21 December 1948.

Physical CharacteristicFrom a reconstructed discharge curve, Clutha River had a discharge of 95,000 cusecs ( cumecs) at Balclutha, gauged at old road bridge. The catchment area was 8100 sq miles (20,979 km^2).

Peak DischargeAt Balclutha, the Clutha River rose to a depth of 72.25 ft (22.02 m) with a peak discharge estimated at 94,000 cusecs (2662 cumecs). It was the highest flood since 1919.

FloodingFlooding at Barnego
Map Location: -46.229256 169.717954
Comments:

Affected LifelineThe Balclutha to Clydevale River road was impassable all day on the 3rd, due to flooding centered at Barnego.

ImpactThe stop banks in the Barnego district overtopped and were breached in two places. The whole flats became inundated.

FloodingFlooding at Cardrona Valley
Map Location: -44.879797 168.99807
Comments:

Affected LifelineThe highway between Cromwell and Wanaka was flooded at Ballantyne's bridge over the Cardrona River and was impassable.

Affected LifelineFlooding and washouts in Cardrona Valley made use of the Crown Range route impossible.

Affected LifelineCrown Range Road still was impassable with washouts in the Cardrona Valley on the 3rd.

FloodingFlooding at Cromwell
Map Location: -45.040741 169.203073
Comments:

CommentKawarau River was in high flood.

Physical CharacteristicAt Cromwell, on the night of the 2nd, both the Kawarau and Clutha Rivers were running 20 ft (6.10 m) above normal, with discoloured water carrying masses of debris, large trees and the occasional drowned animals.

Stock DamageOne farmer lost 50 sheep from an island that couldn't be reached on the morning of the 2nd.

CommentOn the morning of the 3rd, the Clutha River showed a further rise, and appeared to reach a peak later in the day.

CommentFrom the night of the 2nd, the Kawarau River subsided slowly.

ImpactOn the 3rd, both rivers were still discoloured and carrying a large amount of debris.

EvacueesResidents of two houses on the west side of the Clutha River, near Lowburn, were forced to evacuate on the night of the 2nd as flood waters entered their houses.

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

Physical CharacteristicDunedin recorded over 0.5 in (1.27 cm) of rain in 12 hours on the 2nd.

ImpactSteadiness of rain prevented flooding to any noticeable degree, although some sections of drainage system were taxed almost to the limit.

FloodingFlooding at Inch Clutha
Map Location: -46.288561 169.780158
Comments:

ImpactBusiness was slack during day as people went to join volunteer forces in the threatened area of the river.

Peak River LevelBy late evening on the 3rd, the Clutha River had reached its maximum of a little over 72 ft (21.95 m) and stayed steady at that mark. It was 18 in (0.46 m) above the level of the 1946 flood.

CommentInch Clutha stopbanks were generally overtopped, despite the extensive sandbagging.

ImpactAt 11pm on the 3rd, a break reported in the Matau district. Water was coming through over a distance of 15 chains (300 m).

EvacueesThere was an evacuation of a majority of settlers from Inch Clutha and other threatened areas by nightfall on the 3rd.

ImpactTwo boats were used at one stage to rescue people who were marooned.

ImpactFrom the hillside on the northern side of the main highway bridge at Balclutha, the whole valley up the river was a solid sheet of discoloured water.

ImpactDown the main flow huge branches were swept along at a staggering rate, along with an occasional dead sheep. The ends of electric cables, whole trees and a dog kennel were among the debris which was carried down.

Affected LifelineMatau bridge was throught to have slightly buckled under the pressure from a log jam.

ImpactWaitepeka Creek swirled in a turbid torrent in the direction opposite to its customary flow. This was caused by the pressure of water in Clutha River backing up the mouth of the creek.

ImpactSeepage caused a certain amount of surface water to appear near the Balclutha approach to the main highway bridge.

ImpactWater was encroaching onto the showgrounds on the evening of the 3rd.

Affected LifelineThe aerodrome was well under water.

Affected LifelineImpassable roads on the evening of the 3rd, included Balclutha to Clydevale, at Barnego; Balclutha to Kaka Point, at Finegand; Balclutha to Kaitangata, at Hasborough Road and Stirling.

Heavy RainHeavy Rain at Kingston
Map Location: -45.332483 168.71716
Comments:

Physical CharacteristicKingston recorded 2.42 in (6.15 cm) of rain.

Heavy RainHeavy Rain at Lake Hawea
Map Location: -44.61261 169.265967
Comments:

Physical CharacteristicHawea Flats recorded 3.28 in (8.33 cm) of rain in 24 hours.

Peak DischargeAt Lake Hawea the peak discharge was 7500 cusecs (212 cumecs).

CommentLake Hawea was higher than it had been for many years.

Heavy RainHeavy Rain at Makarora
Map Location: -44.23631 169.233253
Comments:

Physical CharacteristicMakarora recorded 5.09 in (12.93 cm) of rain in 24 hours.

Physical CharacteristicMakarora recorded nearly 6.5 in (16.51 cm) of rain in two days.

FloodingFlooding
Comments:

Physical CharacteristicMakarora, at the head of Lake Wanaka, rose 12 ft (3.66 m) above normal and flooded the main streets of Wanaka.

LandslideLandslide
Comments:

Affected LifelineThere was an extensive slip on the road between Hawea and Makarora at Camp Creek. Between the Neck and Makarora the whole hillside was reported to be moving.

Heavy RainHeavy Rain at Queenstown
Map Location: -45.041441 168.645105
Comments:

Physical CharacteristicQueenstown recorded 3.27 in (8.31 cm) of rain in 24 hours to 9:30am on the 2nd.

CommentThis rainfall was the heaviest for a number of years.

FloodingFlooding
Comments:

Physical CharacteristicLake Wakatipu rose 6 ft (1.83 m) above normal and had been rising since Labour weekend (23-25th October).

CommentThe water was almost to the level of the town wharf.

DamageThere was widespread damage reported to all roads in the county and in the hill area of town, roads were well scoured.

Peak DischargeAt Lake Wakatipu the peak discharge was 22,750 cusecs (644 cumecs).

Physical CharacteristicThe inflow to Lake Wakatipu was 67,000 cusecs (1897 cumecs).

Heavy RainHeavy Rain at Wanaka
Map Location: -44.70636 169.1239
Comments:

CommentHeavy rain fell continuously in the Wanaka district for 48 hours and ceased at a late hour on the night of the 2nd.

Physical CharacteristicWanaka recorded 3.01 in (7.65 cm) of rain in 24 hours to 9pm on the 2nd.

Physical CharacteristicWanaka recorded 0.99 in (2.51 cm) of rain on the 2nd.

FloodingFlooding
Comments:

CommentFloods in the district were described as the worst since 1919.

Physical CharacteristicThe Wanaka lake level rose 12 ft (3.66 m) in 20 hours.

ImpactThe lake overflowed on to main road at the wharf, which was completely under water on the night of the 2nd.

Affected LifelineThe Cardrona bridge, on the main highway from Wanaka, was destroyed when its piles were washed away.

Affected LifelineA washout at Lochar Creek, on the main road to Wanaka, resulted in a fissure 30 ft (9.14 m) long and 10 ft (3.05 m) deep in the bitumen road.

CommentIn West Wanaka, the Matukituki River was reported to be a roaring torrent.

ImpactA mass of driftwood over one mile long was floating down the lake.

Affected LifelineRoads and bridges in the district suffered considerable damage as swollen streams and rivers battered at piles and washed away approaches.

Affected LifelineOne of the worst examples of scouring occurred at Wash Creek, near Gravelly Gully, on the main highway between Cromwell and Wanaka. The road was scoured out to depth of 8 ft (2.44 m) and a width of 20 ft (6.10 m), with a large volume of water sweeping through the channel created.

CommentLake Wanaka reached a maximum water level at 6am on the 3rd.

Affected LifelineAt Waterfall Creek on the main road to Glendhu the ford was badly scoured out and impassable.

Affected LifelineBallantyne's bridge (the main bridge into Wanaka) sunk in the middle. Cardrona River was right across the road, and scoured out the approaches to the bridge on both sides, leaving the bridge impassable for some time.

Peak Water LevelMaximum level of Lake Wanaka was 12 ft (3.66 m) at the wharf and 8 in (0.20 m) higher than it reached during the flood of 1946.

Physical CharacteristicThe inflow to Lake Wanaka was estimated 120,000 cusecs (3398 cumecs).

Peak DischargeAt the outfall of Lake Wanaka the peak discharge was 25,350 cusecs (718 cusecs).

LandslideLandslide
Comments:

Affected LifelineThe usual mail service from Wanaka to Makarora was unable to get through on the 3rd because of bad slips and washouts.

Southland

FloodingFlooding at Western Southland
Comments:

Affected LifelineThe western district of Southland was completely isolated by road on the 3rd for five to six hours.

Affected LifelineRoad traffic was held up at the iron bridge on the highway between Invercargill and Riverton. Traffic was also held up at Lochiel, Winton, Centrebush, Benmore and Dipton on the highway between Invercargill and Queenstown. Roads were expected to be clear on the night of the 3rd.

Stock DamageThere were no stock losses reported.

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

Peak DischargeThe annual maximum flood discharge of the Mataura River was 396 cumecs on the 2nd.

FloodingFlooding at Oreti River
Map Location: -46.304952 168.27359
Comments:

CommentOreti River was in high flood.

References

Cowie, C.A; Attwood, A.K.(1957) FLOODS in NEW ZEALAND 1920 -53, The Soil Conservation and Rivers Control Council, Wellington, New Zealand,239p.
New Zealand Meteorlogical Service, Technical Information Circular No. 191, Extreme Wind Gusts,
Headline: Flood Damage: Cost of Repair Work.
Otago Daily Times, 22 December 1949.
Headline: Clutha River in Flood: Rain and Melting Snow Cause Danger in Lower Reaches.
Otago Daily Times, 3 November 1948.
Headline: Damage to Roads and Bridges.
Otago Daily Times, 3 November 1948.
Headline: Flood Level of 1946 Exceeded.
Otago Daily Times, 3 November 1948.
Headline: Half Inch of Rain in City.
Otago Daily Times, 3 November 1948.
Headline: Roads Blocked by Large Slips Over Wide Area.
Otago Daily Times, 3 November 1948.
Headline: Flood Waters Reach Peak: Stop-banks not High Enough to Save Inch Clutha.
Otago Daily Times, 4 November 1948.
Headline: Flooding in Waitaki Area.
Otago Daily Times, 4 November 1948.
Headline: Heavy Rain Brings Lake Wakatipu Up.
Otago Daily Times, 4 November 1948.
Headline: Kawarau and Clutha Falling.
Otago Daily Times, 4 November 1948.
Headline: Many Roads Impassable.
Otago Daily Times, 4 November 1948.
Headline: Record Level at Alexandra.
Otago Daily Times, 4 November 1948.
Headline: Reduced Flow into Wanaka.
Otago Daily Times, 4 November 1948.
Headline: Roads Blocked in Southland.
Otago Daily Times, 4 November 1948.
Surface Water Hydrology of the Mataura River Catchment.