NIWA tide model

Tides are predicted around New Zealand. The model is calibrated with data from tide buoys positioned around the country. The tide buoy out from Tararu has provided data to calibrate with the Moturiki tidal data which is a long-term data set. Purpose: Data used for various projects including the Physical Hazards Programme.

Tide forecast model, based on calibrated tide data collected at Tararu for the Firth of Thames.

New Zealand wide – Tararu only tidal buoy in Region.

Tararu – 2733116, 6451232, NZMG, 1:60,000, Pt

Model updated with funding and data availability.

tide gauges Frequency of collection: Various

Note gaps in data e.g. Moturiki. Gaps in collection: Various – see individual calibration sites. Data quality: longer tidal buoy records have been filtered for anomalies, NIWA QC for archiving. Attribute accuracy: 10 cm and 5 minutes. Completeness: N/A

electronic, reports Digital Format: standard text files, GIS layer (to come)

Ship movement Port design Hazard identification – flooding risk Estuary impacts Sea level rise predictions

Available in summarised data (see web page www.niwa.co.nz/services/tides/, also 'Red Alert' days). NIWA can provide higher resolution data for regional sites (e.g. estuaries). Contact NIWA for full data. Sensitivity/Confidentiality: Contact NIWA

Continuously updated. Live on web.

Additional comments: Related to Terry Hume's Estuary Classification Related information: NIWA wave model