At 1800 hours on 12 July a depression over the North Tasman Sea was moving towards the North Island. By 1800 hours on 13 July a "deep complex depression" (985 millibars) was over the northern portion of the North Island and moving eastward. This produced fresh south-easterly winds by the evening of 13 July with cool to cold temperatures. By 1800 hours on 15 July the depression was east of the North Island and moving slowly away.

Waikato River had a discharge of 33,551 cusecs (950 cumecs) at the Tuakau Bridge on the 16th July. The gauge height was 107.97 ft (32.9 m) and the catchment area was 5400 sq miles (13,986 km^2).

At the height of the flood the whole Tangoio Valley was inundated.

The damage was considerable in localities above the local Post Office.

The state highway was badly affected.

Six residences and a contractor's depot was flooded near to window sill level. There was damage to the furniture and plant.

Fences were flattened and pastures were covered with silt.

Te Ngaru Stream had a discharge of 32,650 cusecs (925 cumecs) on the 14th.

There was a 20 year flood in Hawera.

It was one of the worst floods experienced in Hawera.

The roads around Hawera and the back country were blocked by flooding

Parts of the racecourse was submerged by flooding.

Dives Ave and Princes St extension was under 1.5 m of water in places.

There was flooding at Opunake.

The back country roads were severely flooded.

The level of the Waingongoro Dam at Normanby was 1.3 m above normal.

Water was flowing around the powerhouse.

Waitotara River was 4.6 m above normal.

There were slips and washouts in the Waitotara Valley district.

The flood resulted from a deep depression which crossed over the North Island on 13-14 July and was accompanied by a secondary depression travelling from North Taranaki over the Ruahines.

There was over 3 ft (0.91 m) of water on main Palmerston North-Foxton highway.

There was siltation of all areas close to rivers and in some cases exceeding 3 ft (0.91 m). Depositioned shingle was heavy in some places.

The damage to river works totalled approximately £40,000 ($1,763,000 2010 dollars).

Tiraumea River had a discharge of 17,500 cusecs (496 cumecs) at Kaitawa gauging station and was in high flood.

Within the Moutoa area flooding was severe and at Koputaroa many acres were inundated.

Manawatu River had a discharge of 113,000 cusecs (3200 cumecs) at Fitzherbert Bridge on the 15th. The gauge height was 18.75 ft (5.12 m) and the catchment area was 1500 sq miles (3885 km^2).

The upper Manawatu River was particularly high at Hopelands Bridge and had a discharge of 66,500 cusecs (1883 cumecs).

Extensive flooding occurred in the Woodville area and between the Gorge and Palmerston North.

Mangatainoka River had a discharge of 15,400 cusecs (436 cumecs) at the gauging station.

Within the Taonui basin 59,000 acre feet was ponded.

Huangarua River had a discharge of 14,000 cusecs (396 cumecs) at Puruatanga on the 14th. The gauge height was 13 ft (4.0 m) and the catchment area was 55 sq miles (142 km^2).

Ruamahanga River had a discharge of 68,000 cusecs (1926 cumecs) at Waihenga on the 14th. The gauge height was 14.5 ft (4.4 m) and the catchment area was 904 sq miles (2341 km^2).

Tauherenikau River had a discharge of 8000 cusecs (227 cumecs) at the state highway bridge on the 14th. The catchment area was 72 sq miles (186 km^2).

Ruamahanga River had a discharge of 21,500 cusecs (609 cumecs) at Te Whiti on the 14th. The gauge height was 13.5 ft (4.1 m) and the catchment area was 246 sq miles (637 km^2).

Taueru River had a discharge of 20,500 cusecs (580 cumecs) at Weraiti on the 14th. The gauge height was 38.6 ft (11.8 m) and the catchment area was 146 sq miles (378 km^2).