---
title: "Contract for the Supply of Hydroacoustic River Flow Instrumentation"
ocid: "ocds-h6vhtk-05f99c"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05f99c"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05f99c.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05f99c.json"
source: "Find A Tender Service"
current_stage: "Tender"
buyer: "ENVIRONMENT AGENCY"
published: "2026-04-15"
---

# Contract for the Supply of Hydroacoustic River Flow Instrumentation

Buyer: ENVIRONMENT AGENCY  
Current stage: Tender  
OCID: ocds-h6vhtk-05f99c

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## Summary

The Environment Agency, positioned at Seacole Building in London, is actively seeking tenders through the Department for Environment, Food and Rural Affairs for the contract titled "Contract for the Supply of Hydroacoustic River Flow Instrumentation." This procurement falls under the goods category, focusing on instrumentation and control equipment for hydroacoustic purposes, relevant to the industry of monitoring and environmental management. The tender is structured as a Competitive Flexible Procedure as per the Procurement Act 2023, and submissions must be made via the Authority’s eSourcing platform with a deadline of 12:00 PM GMT on 11 May 2026. Interested suppliers can enquire until 1 May 2026, with the final award expected by 12 June 2026.

This tender offers substantial growth opportunities for businesses specialising in hydroacoustic technology and instrumentation solutions. The framework is divided into four lots, each catering to different deployment scenarios for velocity measurement: mobile, wading, short-range fixed, and long-range fixed instruments. It is particularly suited for SMEs capable of providing highly accurate, cost-effective solutions for environmental monitoring. Participating organisations can secure a two-year contract, with the potential for a one-year extension, focusing on delivering instruments essential for flood forecasting, water resource management, and compliance with environmental regulations.

## Notice

The Authority is seeking to establish a two-year call-off framework with an optional one year extension for the supply of hydroacoustic instrumentation, associated software, and supporting services to enable accurate measurement of river discharge. Accurate river-flow data is critical to the Authorities' ability to manage water resources, understand changing river conditions, support flood forecasting, and respond effectively to incidents. The framework will cover the supply and, where required, installation support of: - Lot 1 - Mobile boat or tether-mounted velocity profilers - Lot 2 - Handheld wading measurement systems - Lot 3 - Short-range fixed-deployment velocity instruments - Lot 4 - Long-range fixed-deployment velocity instruments

### Lot Information

Mobile boat or tether mounted velocity profilers

Lot 1A -- Shallow water mobile profiler Minimum mandatory capability: reliable operation in shallow water, including depths at or below 0.2 m. Suppliers shall state the tested minimum operable depth, velocity range and any limits. Lot 1B -- Deep water mobile profiler Minimum mandatory capability: reliable operation to at least 20 m depth (greater depths are acceptable). Suppliers shall state the tested maximum operable depth, velocity range and any limits.

Renewal: Optional 1 year extension (2+1)

Handheld Wading Measurement Systems

Lot 2 is a single supplier Lot with no sublots. Instruments must be suitable for wading deployment at low to moderate depths (typical depths 0.05-1.0 m, or as otherwise defined).

Renewal: Optional 1 year extension (2+1)

Short-Range Fixed Deployment Velocity Instruments

Lot 3 is a single supplier Lot with no sublots. Instruments will typically be deployed in channels with widths and depths up to around 5 m; suppliers may declare wider/greater operating ranges with evidence.

Renewal: Optional 1 year extension (2+1)

Long-Range Fixed Deployment Velocity Instruments

Lot 4 is a single-supplier Lot with no sub-lots. Long-range instruments typically cover measurement distances from 5 m to 50 m or more, depending on site geometry and the supplier's proven capability.

Renewal: Optional 1 year extension (2+1)

### Planning Information

We encourage interested suppliers to register their interest in this project and submit any questions via the sourcing portal or by email. Suppliers wishing to request a meeting should provide evidence of their capability to deliver this project in no more than 500 words and send it to the email address provided in this notice. 
Suppliers may request a meeting by 16/01/26. Meetings will be scheduled within the period from 26/01/26 to 06/02/26. Meeting slots are limited and will be offered on a first-come, first-served basis. 
Requests received after the deadline or when all slots have been filled may not be accommodated. To ensure productive discussions, we kindly ask suppliers to submit relevant questions in advance. 
All questions and answers raised during the process will be shared in the tender package. The Authority reserves the right to amend or withdraw this opportunity.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/034304-2026 |
| Notice type | UK4 - Tender Notice |
| Procurement type | Standard |
| Procurement category | Goods |
| Procurement method | Open |
| Procurement method details | Competitive flexible procedure |
| Tender suitability | SME |
| Awardee scale | Not specified |
| All stages | Planning, Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 15 Apr 2026 |
| Submission deadline | 11 May 2026 |
| Future notice date | 23 Jan 2026 |
| Award date | Not specified |
| Contract period | 28 Jun 2026 - 28 Jun 2028 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| 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 FOR 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

- 31 - Electrical machinery, apparatus, equipment and consumables; lighting

### Codes

- 31682210 - Instrumentation and control equipment

## Release History

- 15 Apr 2026 at 14:03 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/034304-2026
- 18 Dec 2025 at 16:11 - Planning - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/084584-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/034304-2026
  15th April 2026 - Tender notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/084584-2025
  18th December 2025 - Preliminary market engagement notice on Find a Tender

## Notice URLs

- https://atamis-9529.my.site.com/s/Welcome
- https://atamis-9529.my.site.com/s/WelcomeSubmissionsmustbemadeviatheAuthority'seSourcingplatform.
- 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-05f99c. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05f99c.json.