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Wainuiomata Model Build and Calibration RFP
This tender is using the new split file responses feature on GETS. The agency has indicated that they would like to receive responses separated by price and non price components. Please keep this in mind when preparing your response for submission via GETS.
Details
| RFx ID : | 33363885 |
| Tender Name : | Wainuiomata Model Build and Calibration RFP |
| Reference # : | |
| Open Date : | Monday, 26 January 2026 4:30 PM (Pacific/Auckland UTC+13:00) |
| Close Date : | Friday, 20 February 2026 4:00 PM (Pacific/Auckland UTC+13:00) |
| Tender Type : | Request for Proposals (RFP) |
| Tender Coverage : | Sole Agency [?] |
| Categories : |
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| Regions: |
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| Exemption Reason : | None |
| Required Pre-qualifications : | None |
| Contact : |
Procurement procurement@wellingtonwater.co.nz |
| Alternate Physical Delivery Address : | |
| Alternate Physical Fax Number : |
Overview
The project is to undertake the calibration of the Wainuiomata catchment using information from flow monitoring data. A flow survey was undertaken in 2025 consisted of 11 (3 Historical) HVQ gauges, 2 v notch weirs and 9 (5 Historical) level only instrumentation. The rainfall is based on 2 raingauges, but there is the possibility that rainfall radar could be utilised to represent data gaps or that refinement of spatial variation. The main activities will include the following:
• Hydraulic Model Calibration using both the Short Term and Long Term Flow Survey data.
• Validation of the model performance against observed network information (flooding and spill data) and using Long Time Series Rainfall data as appropriate.
