---
title: "FDSIM of Ultrasonic River Flow Gauges 2025"
ocid: "ocds-h6vhtk-059bd4"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-059bd4"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-059bd4.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-059bd4.json"
source: "Find A Tender Service"
current_stage: "Tender"
buyer: "ENVIRONMENT AGENCY"
published: "2025-09-16"
---

# FDSIM of Ultrasonic River Flow Gauges 2025

Buyer: ENVIRONMENT AGENCY  
Current stage: Tender  
OCID: ocds-h6vhtk-059bd4

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## Summary

The Environment Agency is seeking bids for the "FDSIM of Ultrasonic River Flow Gauges 2025" project, focusing on the environmental monitoring industry category. This procurement process, under an open procedure compliant with the Procurement Act 2023, is managed by the Department of Environment, Food and Rural Affairs (Defra). The contract offers a call-off arrangement covering a maximum of five years, initially for three years with the possibility of two one-year extensions. The tender includes two lots focusing on designing and maintaining ultrasonic river flow gauges crucial for flood warning and water resource management across the UK. All submissions are due by 13th October 2025 at 14:00, with inquiries ending on 6th October 2025.

This tender represents a significant business opportunity, particularly for SMEs engaged in environmental monitoring services. Companies with expertise in feasibility studies, design, supply, and installation of river flow measurement technology, as well as those skilled in maintenance and repair operations, stand to benefit. Given the contract's structure and priorities on major rivers such as the Thames, Severn, and Trent, businesses experienced in high-stakes environmental projects will find this opportunity rewarding. High technical and quality standards, accounting for 70% of the evaluation, and competitive pricing will be crucial for successful bidding.

## 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, Mersey, and Ou

### 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/057141-2025 |
| Notice type | UK4 - Tender Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Open |
| Procurement method details | Open procedure |
| Tender suitability | SME |
| Awardee scale | Not specified |
| All stages | Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 16 Sep 2025 |
| Submission deadline | 13 Oct 2025 |
| Future notice date | Not specified |
| Award date | Not specified |
| Contract period | 1 Jan 2026 - 1 Jan 2031 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £7,800,000 |
| Lots value | £7,800,000 |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Active |
| Lots status | Active |
| Awards status | Not specified |
| Contracts status | Not specified |

## 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 |

## CPV Codes

### Divisions

- 90 - Sewage, refuse, cleaning and environmental services

### Codes

- 90711500 - Environmental monitoring other than for construction

## Release History

- 16 Sep 2025 at 19:35 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/057141-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/057141-2025
  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

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