---
title: "FDSIM of Ultrasonic River Flow Gauges 2025"
ocid: "ocds-h6vhtk-059bd5"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-059bd5"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-059bd5.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-059bd5.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "ENVIRONMENT AGENCY"
published: "2026-01-09"
---

# FDSIM of Ultrasonic River Flow Gauges 2025

Buyer: ENVIRONMENT AGENCY  
Current stage: Award  
OCID: ocds-h6vhtk-059bd5

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-059bd5)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-059bd5.json)

## Summary

The Environmental Agency, in collaboration with the Department of Environment, Food, and Rural Affairs, conducted a procurement process titled "FDSIM of Ultrasonic River Flow Gauges 2025." This tender focused on procuring ultrasonic transit time river flow gauges crucial for flood warning systems and water resource management across major UK rivers. The procurement utilized an open procedure under the Procurement Act 2023 and consisted of a call-off contract with two lots covering feasibility, design, supply, installation, commissioning, maintenance, and repair of the gauges. The contract, awarded to Nivus UK Limited, is valued at approximately £4,680,000 (gross amount of £5,616,000) and spans a fixed period of three years, with options for two additional 12-month extensions, amounting to a maximum duration of five years. The procurement reached its award stage, with the contract being active from 1st January 2026 until 1st January 2029, potentially extending to 1st January 2031.

This procurement offers significant opportunities for businesses involved in environmental instrumentation and monitoring services. Companies specializing in developing and maintaining advanced measurement technologies would find this tender particularly suited to their expertise. The focus on major UK rivers like the Thames, Severn, Trent, and Mersey underscores the high demand for robust and reliable river monitoring systems. Small to medium enterprises (SMEs) in the sector, as evidenced by Nivus UK Limited's successful bid as an SME, can leverage this opportunity to expand their market presence and showcase their capabilities in delivering technologically advanced solutions critical to public safety and environmental management.

## Notice

Procurement Overview This procurement covers the feasibility, design, supply, installation, commissioning, and maintenance of ultrasonic transit time river flow gauges. These gauges are essential for flood warning systems and water resource management across major UK rivers. Contract Structure Procedure: Open Procedure under the Procurement Act 2023 Contract Type: Call-Off Contract under Mid-Tier Terms and Conditions Duration: 3 years fixed + 2 optional 12-month extensions (maximum 5 years) This procurement is for a Call-Off contract covering Two Lots: - Lot 1: Feasibility, design, supply, installation, and commissioning of new ultrasonic river flow gauges. - Lot 2: Maintenance and repair of both new and existing ultrasonic river flow gauges. The gauges are critical for flood warning systems and water resource management, especially at high-priority sites on major rivers such as the Thames, Severn, Trent and Mersey.

### Lot Information

Lot 1: Feasibility, Design, Supply, Installation, and Commissioning

Lot 1: Feasibility, design, supply, installation, and commissioning of new ultrasonic river flow gauges. The gauges are critical for flood warning systems and water resource management, especially at high-priority sites on major rivers such as the Thames, Severn, Trent, Mersey, and Ouse.

Options: The contract will run a for 3 year fixed period with 2 further 12 months extensions possible, totalling 5 years maximum. The costs will be fixed for the first 3 years and after this point will be adjusted at the Services Producer Price Index (SPPI) rate from the annual anniversary of the contract until the contract ends.

Lot 2: Maintenance and Repair

Lot 2: Maintenance and repair of both new and existing ultrasonic river flow gauges. The gauges are critical for flood warning systems and water resource management, especially at high-priority sites on major rivers such as the Thames, Severn, Trent, Mersey, and Ouse.

Options: The contract will run a for 3 year fixed period with 2 further 12 months extensions possible, totalling 5 years maximum. The costs will be fixed for the first 3 years and after this point will be adjusted at the Services Producer Price Index (SPPI) rate from the annual anniversary of the contract until the contract ends.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/001953-2026 |
| Notice type | UK7 - Contract Details Notice |
| Procurement type | Standard |
| Procurement category | Goods |
| Procurement method | Open |
| Procurement method details | Open procedure |
| Tender suitability | SME |
| Awardee scale | SME |
| All stages | Tender, Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 9 Jan 2026 |
| Submission deadline | 13 Oct 2025 |
| Future notice date | Not specified |
| Award date | 4 Nov 2025 |
| Contract period | 1 Jan 2026 - 1 Jan 2029 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £7,800,000 |
| Lots value | £7,800,000 |
| Awards value | £4,680,000 |
| Contracts value | £4,680,000 |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Active, Pending |
| Contracts status | Active |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | ENVIRONMENT AGENCY |
| Additional buyers | DEPARTMENT OF ENVIRONMENT, FOOD AND RURAL AFFAIRS |
| Locality | LONDON |
| Post town | South West London |
| Postcode | SW1P 4DF |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI3 Inner London - West |
| ITL 3 | TLI35 Westminster and City of London |
| Local authority | Westminster |
| Electoral ward | St James's |
| Westminster constituency | Cities of London and Westminster |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | NIVUS |

## CPV Codes

### Divisions

- 31 - Electrical machinery, apparatus, equipment and consumables; lighting
- 33 - Medical equipments, pharmaceuticals and personal care products
- 90 - Sewage, refuse, cleaning and environmental services

### Codes

- 31682210 - Instrumentation and control equipment
- 33112200 - Ultrasonic unit
- 90711500 - Environmental monitoring other than for construction

## Release History

- 9 Jan 2026 at 15:05 - Award - UK7 - Contract Details Notice - https://www.find-tender.service.gov.uk/Notice/001953-2026
- 27 Nov 2025 at 11:04 - Award - UK6 - Contract Award Notice - https://www.find-tender.service.gov.uk/Notice/077592-2025
- 16 Sep 2025 at 19:35 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/057142-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/001953-2026
  9th January 2026 - Contract details notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/077592-2025
  27th November 2025 - Contract award notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/057142-2025
  16th September 2025 - Tender notice on Find a Tender

## Notice URLs

- https://defra-family.force.com/s/Welcome
- https://www.legislation.gov.uk/ukpga/2023/54/contents

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-059bd5. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-059bd5.json.