NZ Historic Weather Events Catalogue

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SevereJuly 1928 Waikato and Auckland Flooding ( 1928-07-22 )

Heavy rain caused flooding to occur in many regions of the Waikato. Thousands of acres of farmland was inundated and road and railway communication was suspended.

North Island

Multi HazardMulti Hazard at North Island
Duration:   7  days - There was heavy rain and flooding in Auckland and the Waikato from the 23rd to the 29th of July 1928.
Comments:

Auckland

FloodingFlooding at Auckland
Comments:

Affected LifelineThere were serious interruptions to both road and rail traffic caused by slips and flooding in the Swanson district on the 29th of July.

Affected LifelineFlood waters covered stretches of the railway.

Affected LifelinePart of the Hunua Valley road was under water on the 23rd and there was flooding on the Papakura-Brookby road.

Heavy RainHeavy Rain at Auckland City
Map Location: -36.852397 174.762337
Comments:

Physical CharacteristicAuckland recorded 4.29 in (10.90 cm) of rain in 48 hours to 9am on the 23rd.

FloodingFlooding
Comments:

ImpactOn the 24th there was some flooding of low-lying areas.

FloodingFlooding at Kumeu River
Map Location: -36.7822 174.5664
Comments:

Physical CharacteristicThe Kumeu River rose considerably to flood the main north road to a depth of 5 ft (1.52 m).

FloodingFlooding at Waimauku
Map Location: -36.762478 174.483366
Comments:

Physical CharacteristicAt Waimauku the main road was covered to a depth of 3 ft (0.91 m) on the 22nd.

Waikato

Multi HazardMulti Hazard at Waikato
Comments:

CommentIn the Hauraki district, wind was from the south-east on the 21st and developed into a strong gale on the 22nd. Rain fell from 6am on the 22nd to 5:30am on the 25th.

CommentOn the 27th a south-east gale in the Thames Valley accompanied by driving rain caused the rivers to flood again.

Affected LifelineFrom the 24th to the 27th the railway communications between Tauranga, Paeroa, the Waikato and Auckland were completely disorganised on the account of slips on the line and washouts. The flood caused trouble between Tirohia and Waitoki on the Paeroa-Waikato line and at Karangahake, Waikino and Omokoroa on the Paeroa-Tauranga section.

Heavy RainHeavy Rain at Cambridge
Map Location: -37.886458 175.444978
Comments:

Physical CharacteristicCambridge recorded 8.3 in (21.08 cm) in 24 hours.

Multi HazardMulti Hazard at Coromandel
Map Location: -36.752474 175.508989
Comments:

Damage CostThe damage to Coromandel county roads totalled £270 ($23,340 2010 dollars).

Affected LifelineThe Tapu-Coromandel Road was impassable to all traffic.

Heavy RainHeavy Rain at Hamilton
Map Location: -37.780816 175.272836
Comments:

Physical CharacteristicHamilton recorded 2.05 in (5.21 cm) of rain in 24 hours to 9am on the 24th.

Physical CharacteristicHamilton recorded 2.94 in (7.47 cm) of rain in 48 hours to 9am on the 24th.

FloodingFlooding
Comments:

Affected LifelineThe bridge over Okete Stream on the Hamilton-Okete Road was washed away.

Heavy RainHeavy Rain at Hauraki Plains
Map Location: -37.337475 175.454918
Comments:

Physical CharacteristicHauraki Plains received 4.03 in (10.24 cm) of rain in three days ending at 8am on the 26th.

FloodingFlooding
Comments:

ImpactThe country between Orongo and Kopuarahi was a sea of water.

Physical CharacteristicOn the Turua Netherton Road, where stopbanking was not completed, water from the Waihou River poured onto farms. Many hundreds of acres were inundated and in places the water was 2 ft (0.61 m) deep.

FloodingFlooding at Mangatawhiri
Map Location: -37.218243 175.119949
Comments:

Physical CharacteristicIn the Mangatawhiri Valley the Pokeno-Paeroa main highway was under water to a depth of 3.5 ft (1.07 m) for a considerable length.

FloodingFlooding at Mercer
Map Location: -37.280396 175.051333
Comments:

ImpactAt Mercer the water covered the railway yard through train services were not stopped. Large areas of low-lying land was inundated due to the rapid rise of the Waikato River.

EvacueesSeveral houses in the lower portion of the township were flooded and the occupants were evacuated.

Heavy RainHeavy Rain at Ngaruawahia
Map Location: -37.668325 175.128
Comments:

Physical CharacteristicNgaruawahia recorded 5 in (12.7 cm) of rain from the 22nd to the 24th.

FloodingFlooding
Comments:

Affected LifelineThere was a washout on the Glenmassey line which held up railway traffic on the 23rd.

Affected LifelineThe Waipa River flooded the Waingaro Road on the 24th.

FloodingFlooding at Ohinemuri River
Map Location: -37.407629 175.819234
Comments:

Peak DischargeOhinemuri River had a discharge of 12,000 cusecs (340 cumecs) and maintained this steadily for a whole day. The river rose slowly and peaked to give a maximum discharge of 17,150 cusecs (486 cumecs) which was recorded at 8am on the 25th. This peak was maintained for three hours.

Peak River LevelOhinemuri River had a peak depth of 134.40 ft (40.97 m).

Affected LifelineThe Ohinemuri River overflowed its banks at several points between Waihi and Paeroa. Ohinemuri River broke through a low portion of its banks and washed away the Paeroa-Taneatua railway line and all rail communication was cut off between Paeroa and Waihi.

Heavy RainHeavy Rain at Paeroa
Map Location: -37.374016 175.671099
Comments:

Physical CharacteristicPaeroa recorded 7.70 in (19.56 cm) of rain in 72 hours from 6am on the 22nd to 5:30am on the 25th.

Physical CharacteristicPaeroa recorded 3.04 in (7.72 cm) of rain in 14 hours.

Physical CharacteristicPaeroa recorded 6.60 in (16.76 cm) of rain from 9am on the 23rd to 9am on the 25th.

High Wind GustsHigh Wind / Gust
Comments:

CommentRain was accompanied by a high easterly or south-easterly wind.

FloodingFlooding
Comments:

ImpactLow-lying portions of the town were flooded. Surface water collected at Arney, Wharf and Princes Streets, Upper Normanby and along Taylor's Avenue.

Affected LifelineA serious break occurred in the water supply. Debris lodged against the main and dislocated the pipe at the headworks at Tarariki Stream.

Stock DamageA few pigs were lost, but no other losses of stock were reported.

ImpactFarms were flooded on Mill, Cadman and Ryall road areas.

Peak River LevelThe upper Waihou River peaked at Puke Road (Paeroa) at R.L. 110.55 (33.70 m). This level was 3.15 ft (0.96 m) higher than the previous record of 107.40 on the 21st May 1926 and only 1.20 ft (0.37 m) below the level of which the stopbanks had been designed.

Peak DischargeThe Waihou River had a peak discharge of 15,900 cusecs (450 cumecs) at Ngahina Wharf at Paeroa.

Physical CharacteristicOn the 27th at Puke Road in Paeroa the Waihou River flood waters rose 1 ft (0.3 m) higher than the peak height of the previous week.

Affected LifelineRoad communication between Te Aroha and Paeroa was blocked. The road between Paeroa and Waihi was under water in several places up to 5-6 ft (1.52-1.83 m) deep and traffic was suspended. A heavy slip occurred on the Waihi-Paeroa road near Paeroa at the entrance to the Karangahake Gorge.

Physical CharacteristicThe road near Tarariki Stream was under water and all low-lying in the area was under water in some parts to a depth of 4-5 ft (1.22-1.52 m).

ImpactThe whole of the low-lying land from Hikutaia to Paeroa was a sheet of water from the foothills to the stopbanks.

Affected LifelineAll train communication past Paeroa was suspended. The Paeroa-Waihi railway line was blocked by several slips between Karangahake and Waikino.

FloodingFlooding at Piako River
Map Location: -37.281776 175.512524
Comments:

Peak DischargePiako River was in moderate flood and peaked at 2800 cusecs (79.3 cumecs).

Heavy RainHeavy Rain at Te Aroha
Map Location: -37.536449 175.715591
Comments:

Physical CharacteristicTe Aroha recorded 9 in (22.86 cm) of rain in 48 hours ending 9am on the 24th.

Physical CharacteristicTe Aroha recorded 5.40 in (13.72 cm) of rain in 24 hours ending 9am on the 24th.

FloodingFlooding
Comments:

DamageThousands of acres on both sides of the Waihou River were inundated. Farmlands were flooded and there was extensive damage.

Physical CharacteristicFlood waters across the road from Te Aroha to Te Aroha West was barred by 6-7 ft (1.83-2.13 m) of water. The road to Waiorongomai and Gordon was under water and was scoured out in places. The damage to roads in this manner was very extensive.

ImpactSome houses were flooded to considerable depths.

Affected LifelinePart of the bridge of Gordon Road was washed away.

Peak River LevelAt Te Aroha, the Waihou River flood level rose to 129.68 ft (39.53 m), and was only 0.68 ft (0.21 m) below the record level recorded on in May 1924.

Peak DischargeThe Waihou River had a peak discharge of 14,000 cusecs (396 cumecs) at Te Aroha.

Heavy RainHeavy Rain at Thames
Map Location: -37.140988 175.533107
Comments:

Physical CharacteristicThames recorded 4.32 in (10.97 cm) of rain in three days ending at 10am on the 24th.

FloodingFlooding
Comments:

ImpactAll rivers and streams were flooded in Thames.

Affected LifelineAt Kirikiri Stream, water 3.5 ft deep was flowing over the Thames-Paeroa Road between Kopu and Kirikiri, making the road impassable.

LandslideLandslide
Comments:

Affected LifelineSeveral slips were reported on the Thames-Coromandel road including a large one at Waiomu. The Thames-Mercury Bay road, via Tapu, was impassable.

FloodingFlooding at Tirohia
Map Location: -37.43681 175.645377
Comments:

Peak DischargeThe Waihou River had a peak discharge of 14,771 cusecs (418 cumecs) at Tirohia with a peak river level of 113.79 ft (34.68 m). Correcting this for the break-out gave a peak discharge of 14,940 cusecs (423 cumecs) and a river level of 114.80 ft (34.99 m).

Damage CostA cost of $54,700 was required to raise and strengthen stopbanks after this flood.

ImpactThere was heavy flooding between Mangaiti and Tirohia. At both Mangaiti and Tirohia the railway line was covered by flood waters. Washouts occurred in places, damaging the line. The road between Tirohia and Mangaiti was also inundated and impassable.

ImpactOn the 27th, the flooded areas in the Tirohia-Rotokohu district which were about 5000 acres (2023 ha) in size were relieved of flood waters after a portion of the bank of the Waihou River near the junction of the Ohinemuri River was dynamited away.

Heavy RainHeavy Rain at Waihi
Map Location: -37.394063 175.820932
Comments:

Physical CharacteristicWaihi recorded 23.82 in (60.50 cm) of rain in 72 hours from 6am on the 22nd to 5:30am on the 25th.

Physical CharacteristicWaihi recorded 5.82 in (14.78 cm) of rain in 6.25 hours from 8:30pm on the 24th to 2:45am on the 25th.

FloodingFlooding at Waihou River
Map Location: -37.329797 175.617724
Comments:

ImpactThe upper Waihou River was in very high flood and extensive flooding occurred in the lower Waihou River on both sides of the river. The river overflowed its banks in several places and inundated the countryside for a wide area.

Peak DischargeThe peak discharge was estimated at 28,000 cusecs (793 cumecs) at the confluence of the Waihou and Ohinemuri Rivers.

CommentThe flood was the heaviest since 1910.

FloodingFlooding at Waikato River
Map Location: -37.7148 175.22011
Comments:

CommentHeavy rain in parts of the catchment brought the Waikato River into flood from the 23th to the 28th of July.

DamageSome light stock losses were reported but no serious damage occurred.

FloodingFlooding at Waitoa River
Map Location: -37.499054 175.568786
Comments:

Peak DischargeWaitoa River was in moderate flood and peaked at 950 cusecs (26.9 cumecs).

FloodingFlooding at Waitoki
Map Location: -36.633492 174.553244
Comments:

Affected LifelineAt Waitoki there were several washouts on the railway line resulting in considerable damage.

FloodingFlooding at Wharepoa
Map Location: -37.268304 175.621145
Comments:

ImpactLow-lying farms around Wharepoa were under water.

Bay of Plenty

FloodingFlooding at Omokoroa
Map Location: -37.664863 176.035125
Comments:

Affected LifelineThere was an extensive washout along the Tauranga-Auckland line at Omokoroa.

References

Cowie, C.A., Attwood, A.K. (1957) Floods in New Zealand 1920-1953, The Soil Conservation Control Council, Wellington, New Zealand
Headline: Rain and Flood, Low-lying Areas Inundated, Road Traffic Help Up.
Hauraki Plains Gazette, 25 July (Wednesday) 1928.
Headline: After the Storm, Conditions Around Paeroa, Flood-waters Receding.
Hauraki Plains Gazette, 27 July (Friday) 1928.
Headline: Floods Near Te Aroha, All Trains Help Up, Serious Washouts Occur.
Thames Star, 25 July (Wednesday) 1928.
Headline: Conditions Near Thames, Rain For Sixty Hours.
The New Zealand Herald, 24 July (Tuesday) 1928.
Headline: Position In Waikato, Traffic Routes Affected.
The New Zealand Herald, 24 July (Tuesday) 1928.
Headline: Rivers Running High, Okete Bridge Washed Away.
The New Zealand Herald, 24 July (Tuesday) 1928.
Headline: Severe Storm, Heavy Rainfall in City
The New Zealand Herald, 24 July (Tuesday) 1928.
Headline: Te Aroha - Paeroa Road, Impassable to Traffic.
The New Zealand Herald, 24 July (Tuesday) 1928.
Headline: Conditions at Paeroa, Wide Area Flooded.
The New Zealand Herald, 25 July (Wednesday) 1928.
Headline: Extensive Floods, Three Days Steady Rain, Rapid Rise of Rivers, Inundation at Te Aroha.
The New Zealand Herald, 25 July (Wednesday) 1928.
Headline: Over A Foot Of Rain, Experience at Waihi.
The New Zealand Herald, 25 July (Wednesday) 1928.
Headline: Position At Hamilton, Several Roads Impassable, Waikato River In Flood.
The New Zealand Herald, 25 July (Wednesday) 1928.
Headline: Railway Underwater, Services Suspended, The East Coast Line.
The New Zealand Herald, 25 July (Wednesday) 1928.
Headline: Roads Under Water, Dislocation of Traffic, Position in Thames Area.
The New Zealand Herald, 25 July (Wednesday) 1928.
Headline: Conditions at Mercer, Low-lying Land Flooded, High Level of Waikato.
The New Zealand Herald, 26 July (Thursday) 1928.
Headline: Deluge at Waihi, Seven Inches in 24 Hours.
The New Zealand Herald, 26 July (Thursday) 1928.
Headline: Hauraki Plains Areas, Every Drain Bank High.
The New Zealand Herald, 26 July (Thursday) 1928.
Headline: Rise of Flood Waters, Paeroa District's Plight, Large Areas Inundated.
The New Zealand Herald, 26 July (Thursday) 1928.
Headline: Te Aroha District, Signs of Improvement.
The New Zealand Herald, 26 July (Thursday) 1928.
Headline: Flood Waters Recede, Rapid Fall of Rivers, Conditions near Paeroa.
The New Zealand Herald, 27 July (Friday) 1928.
Headline: Severe Weather, Floods at Rangiriri.
The Waikato Times 27 July 1928.

SevereJuly 1928 Waikato and Auckland Flooding ( 1928-07-22 )

Heavy rain caused flooding to occur in many regions of the Waikato. Thousands of acres of farmland was inundated and road and railway communication was suspended.

North Island

Multi HazardMulti Hazard at North Island
Duration:   7  days - There was heavy rain and flooding in Auckland and the Waikato from the 23rd to the 29th of July 1928.
Comments:

Auckland

FloodingFlooding at Auckland
Comments:

Affected LifelineThere were serious interruptions to both road and rail traffic caused by slips and flooding in the Swanson district on the 29th of July.

Affected LifelineFlood waters covered stretches of the railway.

Affected LifelinePart of the Hunua Valley road was under water on the 23rd and there was flooding on the Papakura-Brookby road.

Heavy RainHeavy Rain at Auckland City
Map Location: -36.852397 174.762337
Comments:

Physical CharacteristicAuckland recorded 4.29 in (10.90 cm) of rain in 48 hours to 9am on the 23rd.

FloodingFlooding
Comments:

ImpactOn the 24th there was some flooding of low-lying areas.

FloodingFlooding at Kumeu River
Map Location: -36.7822 174.5664
Comments:

Physical CharacteristicThe Kumeu River rose considerably to flood the main north road to a depth of 5 ft (1.52 m).

FloodingFlooding at Waimauku
Map Location: -36.762478 174.483366
Comments:

Physical CharacteristicAt Waimauku the main road was covered to a depth of 3 ft (0.91 m) on the 22nd.

Waikato

Multi HazardMulti Hazard at Waikato
Comments:

CommentIn the Hauraki district, wind was from the south-east on the 21st and developed into a strong gale on the 22nd. Rain fell from 6am on the 22nd to 5:30am on the 25th.

CommentOn the 27th a south-east gale in the Thames Valley accompanied by driving rain caused the rivers to flood again.

Affected LifelineFrom the 24th to the 27th the railway communications between Tauranga, Paeroa, the Waikato and Auckland were completely disorganised on the account of slips on the line and washouts. The flood caused trouble between Tirohia and Waitoki on the Paeroa-Waikato line and at Karangahake, Waikino and Omokoroa on the Paeroa-Tauranga section.

Heavy RainHeavy Rain at Cambridge
Map Location: -37.886458 175.444978
Comments:

Physical CharacteristicCambridge recorded 8.3 in (21.08 cm) in 24 hours.

Multi HazardMulti Hazard at Coromandel
Map Location: -36.752474 175.508989
Comments:

Damage CostThe damage to Coromandel county roads totalled £270 ($23,340 2010 dollars).

Affected LifelineThe Tapu-Coromandel Road was impassable to all traffic.

Heavy RainHeavy Rain at Hamilton
Map Location: -37.780816 175.272836
Comments:

Physical CharacteristicHamilton recorded 2.05 in (5.21 cm) of rain in 24 hours to 9am on the 24th.

Physical CharacteristicHamilton recorded 2.94 in (7.47 cm) of rain in 48 hours to 9am on the 24th.

FloodingFlooding
Comments:

Affected LifelineThe bridge over Okete Stream on the Hamilton-Okete Road was washed away.

Heavy RainHeavy Rain at Hauraki Plains
Map Location: -37.337475 175.454918
Comments:

Physical CharacteristicHauraki Plains received 4.03 in (10.24 cm) of rain in three days ending at 8am on the 26th.

FloodingFlooding
Comments:

ImpactThe country between Orongo and Kopuarahi was a sea of water.

Physical CharacteristicOn the Turua Netherton Road, where stopbanking was not completed, water from the Waihou River poured onto farms. Many hundreds of acres were inundated and in places the water was 2 ft (0.61 m) deep.

FloodingFlooding at Mangatawhiri
Map Location: -37.218243 175.119949
Comments:

Physical CharacteristicIn the Mangatawhiri Valley the Pokeno-Paeroa main highway was under water to a depth of 3.5 ft (1.07 m) for a considerable length.

FloodingFlooding at Mercer
Map Location: -37.280396 175.051333
Comments:

ImpactAt Mercer the water covered the railway yard through train services were not stopped. Large areas of low-lying land was inundated due to the rapid rise of the Waikato River.

EvacueesSeveral houses in the lower portion of the township were flooded and the occupants were evacuated.

Heavy RainHeavy Rain at Ngaruawahia
Map Location: -37.668325 175.128
Comments:

Physical CharacteristicNgaruawahia recorded 5 in (12.7 cm) of rain from the 22nd to the 24th.

FloodingFlooding
Comments:

Affected LifelineThere was a washout on the Glenmassey line which held up railway traffic on the 23rd.

Affected LifelineThe Waipa River flooded the Waingaro Road on the 24th.

FloodingFlooding at Ohinemuri River
Map Location: -37.407629 175.819234
Comments:

Peak DischargeOhinemuri River had a discharge of 12,000 cusecs (340 cumecs) and maintained this steadily for a whole day. The river rose slowly and peaked to give a maximum discharge of 17,150 cusecs (486 cumecs) which was recorded at 8am on the 25th. This peak was maintained for three hours.

Peak River LevelOhinemuri River had a peak depth of 134.40 ft (40.97 m).

Affected LifelineThe Ohinemuri River overflowed its banks at several points between Waihi and Paeroa. Ohinemuri River broke through a low portion of its banks and washed away the Paeroa-Taneatua railway line and all rail communication was cut off between Paeroa and Waihi.

Heavy RainHeavy Rain at Paeroa
Map Location: -37.374016 175.671099
Comments:

Physical CharacteristicPaeroa recorded 7.70 in (19.56 cm) of rain in 72 hours from 6am on the 22nd to 5:30am on the 25th.

Physical CharacteristicPaeroa recorded 3.04 in (7.72 cm) of rain in 14 hours.

Physical CharacteristicPaeroa recorded 6.60 in (16.76 cm) of rain from 9am on the 23rd to 9am on the 25th.

High Wind GustsHigh Wind / Gust
Comments:

CommentRain was accompanied by a high easterly or south-easterly wind.

FloodingFlooding
Comments:

ImpactLow-lying portions of the town were flooded. Surface water collected at Arney, Wharf and Princes Streets, Upper Normanby and along Taylor's Avenue.

Affected LifelineA serious break occurred in the water supply. Debris lodged against the main and dislocated the pipe at the headworks at Tarariki Stream.

Stock DamageA few pigs were lost, but no other losses of stock were reported.

ImpactFarms were flooded on Mill, Cadman and Ryall road areas.

Peak River LevelThe upper Waihou River peaked at Puke Road (Paeroa) at R.L. 110.55 (33.70 m). This level was 3.15 ft (0.96 m) higher than the previous record of 107.40 on the 21st May 1926 and only 1.20 ft (0.37 m) below the level of which the stopbanks had been designed.

Peak DischargeThe Waihou River had a peak discharge of 15,900 cusecs (450 cumecs) at Ngahina Wharf at Paeroa.

Physical CharacteristicOn the 27th at Puke Road in Paeroa the Waihou River flood waters rose 1 ft (0.3 m) higher than the peak height of the previous week.

Affected LifelineRoad communication between Te Aroha and Paeroa was blocked. The road between Paeroa and Waihi was under water in several places up to 5-6 ft (1.52-1.83 m) deep and traffic was suspended. A heavy slip occurred on the Waihi-Paeroa road near Paeroa at the entrance to the Karangahake Gorge.

Physical CharacteristicThe road near Tarariki Stream was under water and all low-lying in the area was under water in some parts to a depth of 4-5 ft (1.22-1.52 m).

ImpactThe whole of the low-lying land from Hikutaia to Paeroa was a sheet of water from the foothills to the stopbanks.

Affected LifelineAll train communication past Paeroa was suspended. The Paeroa-Waihi railway line was blocked by several slips between Karangahake and Waikino.

FloodingFlooding at Piako River
Map Location: -37.281776 175.512524
Comments:

Peak DischargePiako River was in moderate flood and peaked at 2800 cusecs (79.3 cumecs).

Heavy RainHeavy Rain at Te Aroha
Map Location: -37.536449 175.715591
Comments:

Physical CharacteristicTe Aroha recorded 9 in (22.86 cm) of rain in 48 hours ending 9am on the 24th.

Physical CharacteristicTe Aroha recorded 5.40 in (13.72 cm) of rain in 24 hours ending 9am on the 24th.

FloodingFlooding
Comments:

DamageThousands of acres on both sides of the Waihou River were inundated. Farmlands were flooded and there was extensive damage.

Physical CharacteristicFlood waters across the road from Te Aroha to Te Aroha West was barred by 6-7 ft (1.83-2.13 m) of water. The road to Waiorongomai and Gordon was under water and was scoured out in places. The damage to roads in this manner was very extensive.

ImpactSome houses were flooded to considerable depths.

Affected LifelinePart of the bridge of Gordon Road was washed away.

Peak River LevelAt Te Aroha, the Waihou River flood level rose to 129.68 ft (39.53 m), and was only 0.68 ft (0.21 m) below the record level recorded on in May 1924.

Peak DischargeThe Waihou River had a peak discharge of 14,000 cusecs (396 cumecs) at Te Aroha.

Heavy RainHeavy Rain at Thames
Map Location: -37.140988 175.533107
Comments:

Physical CharacteristicThames recorded 4.32 in (10.97 cm) of rain in three days ending at 10am on the 24th.

FloodingFlooding
Comments:

ImpactAll rivers and streams were flooded in Thames.

Affected LifelineAt Kirikiri Stream, water 3.5 ft deep was flowing over the Thames-Paeroa Road between Kopu and Kirikiri, making the road impassable.

LandslideLandslide
Comments:

Affected LifelineSeveral slips were reported on the Thames-Coromandel road including a large one at Waiomu. The Thames-Mercury Bay road, via Tapu, was impassable.

FloodingFlooding at Tirohia
Map Location: -37.43681 175.645377
Comments:

Peak DischargeThe Waihou River had a peak discharge of 14,771 cusecs (418 cumecs) at Tirohia with a peak river level of 113.79 ft (34.68 m). Correcting this for the break-out gave a peak discharge of 14,940 cusecs (423 cumecs) and a river level of 114.80 ft (34.99 m).

Damage CostA cost of $54,700 was required to raise and strengthen stopbanks after this flood.

ImpactThere was heavy flooding between Mangaiti and Tirohia. At both Mangaiti and Tirohia the railway line was covered by flood waters. Washouts occurred in places, damaging the line. The road between Tirohia and Mangaiti was also inundated and impassable.

ImpactOn the 27th, the flooded areas in the Tirohia-Rotokohu district which were about 5000 acres (2023 ha) in size were relieved of flood waters after a portion of the bank of the Waihou River near the junction of the Ohinemuri River was dynamited away.

Heavy RainHeavy Rain at Waihi
Map Location: -37.394063 175.820932
Comments:

Physical CharacteristicWaihi recorded 23.82 in (60.50 cm) of rain in 72 hours from 6am on the 22nd to 5:30am on the 25th.

Physical CharacteristicWaihi recorded 5.82 in (14.78 cm) of rain in 6.25 hours from 8:30pm on the 24th to 2:45am on the 25th.

FloodingFlooding at Waihou River
Map Location: -37.329797 175.617724
Comments:

ImpactThe upper Waihou River was in very high flood and extensive flooding occurred in the lower Waihou River on both sides of the river. The river overflowed its banks in several places and inundated the countryside for a wide area.

Peak DischargeThe peak discharge was estimated at 28,000 cusecs (793 cumecs) at the confluence of the Waihou and Ohinemuri Rivers.

CommentThe flood was the heaviest since 1910.

FloodingFlooding at Waikato River
Map Location: -37.7148 175.22011
Comments:

CommentHeavy rain in parts of the catchment brought the Waikato River into flood from the 23th to the 28th of July.

DamageSome light stock losses were reported but no serious damage occurred.

FloodingFlooding at Waitoa River
Map Location: -37.499054 175.568786
Comments:

Peak DischargeWaitoa River was in moderate flood and peaked at 950 cusecs (26.9 cumecs).

FloodingFlooding at Waitoki
Map Location: -36.633492 174.553244
Comments:

Affected LifelineAt Waitoki there were several washouts on the railway line resulting in considerable damage.

FloodingFlooding at Wharepoa
Map Location: -37.268304 175.621145
Comments:

ImpactLow-lying farms around Wharepoa were under water.

Bay of Plenty

FloodingFlooding at Omokoroa
Map Location: -37.664863 176.035125
Comments:

Affected LifelineThere was an extensive washout along the Tauranga-Auckland line at Omokoroa.

References

Cowie, C.A., Attwood, A.K. (1957) Floods in New Zealand 1920-1953, The Soil Conservation Control Council, Wellington, New Zealand
Headline: Rain and Flood, Low-lying Areas Inundated, Road Traffic Help Up.
Hauraki Plains Gazette, 25 July (Wednesday) 1928.
Headline: After the Storm, Conditions Around Paeroa, Flood-waters Receding.
Hauraki Plains Gazette, 27 July (Friday) 1928.
Headline: Floods Near Te Aroha, All Trains Help Up, Serious Washouts Occur.
Thames Star, 25 July (Wednesday) 1928.
Headline: Conditions Near Thames, Rain For Sixty Hours.
The New Zealand Herald, 24 July (Tuesday) 1928.
Headline: Position In Waikato, Traffic Routes Affected.
The New Zealand Herald, 24 July (Tuesday) 1928.
Headline: Rivers Running High, Okete Bridge Washed Away.
The New Zealand Herald, 24 July (Tuesday) 1928.
Headline: Severe Storm, Heavy Rainfall in City
The New Zealand Herald, 24 July (Tuesday) 1928.
Headline: Te Aroha - Paeroa Road, Impassable to Traffic.
The New Zealand Herald, 24 July (Tuesday) 1928.
Headline: Conditions at Paeroa, Wide Area Flooded.
The New Zealand Herald, 25 July (Wednesday) 1928.
Headline: Extensive Floods, Three Days Steady Rain, Rapid Rise of Rivers, Inundation at Te Aroha.
The New Zealand Herald, 25 July (Wednesday) 1928.
Headline: Over A Foot Of Rain, Experience at Waihi.
The New Zealand Herald, 25 July (Wednesday) 1928.
Headline: Position At Hamilton, Several Roads Impassable, Waikato River In Flood.
The New Zealand Herald, 25 July (Wednesday) 1928.
Headline: Railway Underwater, Services Suspended, The East Coast Line.
The New Zealand Herald, 25 July (Wednesday) 1928.
Headline: Roads Under Water, Dislocation of Traffic, Position in Thames Area.
The New Zealand Herald, 25 July (Wednesday) 1928.
Headline: Conditions at Mercer, Low-lying Land Flooded, High Level of Waikato.
The New Zealand Herald, 26 July (Thursday) 1928.
Headline: Deluge at Waihi, Seven Inches in 24 Hours.
The New Zealand Herald, 26 July (Thursday) 1928.
Headline: Hauraki Plains Areas, Every Drain Bank High.
The New Zealand Herald, 26 July (Thursday) 1928.
Headline: Rise of Flood Waters, Paeroa District's Plight, Large Areas Inundated.
The New Zealand Herald, 26 July (Thursday) 1928.
Headline: Te Aroha District, Signs of Improvement.
The New Zealand Herald, 26 July (Thursday) 1928.
Headline: Flood Waters Recede, Rapid Fall of Rivers, Conditions near Paeroa.
The New Zealand Herald, 27 July (Friday) 1928.
Headline: Severe Weather, Floods at Rangiriri.
The Waikato Times 27 July 1928.