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Flow Derivation Reviews

Environment Agency

This public procurement record has 4 releases in its history.

TenderUpdate

03 Sep 2026 at 10:56

UK4 - Tender Notice
TenderUpdate

28 Aug 2026 at 10:51

UK4 - Tender Notice
TenderUpdate

28 Aug 2026 at 10:41

UK4 - Tender Notice
Tender

27 Aug 2026 at 13:29

UK4 - Tender Notice
Summary of the contracting process

The Environment Agency is procuring specialist flow-monitoring and research consultancy services for flow derivation reviews at 13 selected gauging stations across the United Kingdom. The work will assess the accuracy, reliability and suitability of existing methods used to derive flow records, examining current methodologies and identifying limitations and uncertainties that affect data quality. Where supported by the evidence, the supplier will develop improved flow derivation methods and ratings. The scope may also include developing a modelled high-flow rating for one specified station, if sufficient evidence is available. This is a technical water-monitoring and hydrological consultancy requirement, suited to organisations working with gauging-station data, flow measurement, rating methods and the analysis of derived flow records.

The procurement has reached tender: the Environment Agency invited quotations through a below-threshold open competition. There is one lot, with a contract running from 1 October 2026 to 31 March 2028. The estimated value is £42,000 excluding VAT, or £50,400 including VAT. Quotations must be submitted by 17:00 on 25 September 2026, in line with the Request for Quotation requirements. Electronic submission is not allowed; responses must be sent by email. Clarification questions must also be submitted by email, with questions and responses circulated to tenderers unless commercially sensitive. The published award criteria are recorded as to be confirmed, so suppliers will need to consult the Request for Quotation and associated bidding documents for the evaluation basis and detailed requirements.

This opportunity suits a specialist hydrology, water-resources or environmental monitoring consultancy with practical experience of flow derivation and gauging-station data. Relevant capability includes reviewing existing flow methodologies, assessing uncertainty and data quality, interpreting flow records, and developing or validating rating methods. The requirement may also suit organisations able to model high-flow behaviour and turn technical evidence into improved operational methods. Suppliers will need sufficient technical capacity to review 13 stations and produce defensible findings and recommendations over the contract period. The lot is identified as suitable for small and medium-sized enterprises and voluntary, community or social enterprises, widening its potential fit for smaller specialist consultancies and mission-led organisations with the required expertise. The work is research-led but has a direct application to the Environment Agency’s monitoring data.

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Notice Information

Notice Title

Flow Derivation Reviews

Notice Description

This project will undertake flow derivation reviews at 13 selected Environment Agency gauging stations to assess the accuracy, reliability and suitability of existing flow derivation methods. The reviews will examine current methodologies, identify limitations and uncertainties affecting the quality of derived flow records. Where justified by the available evidence, improved flow derivation methods and ratings will be developed, including the derivation of a modelled high-flow rating for one specified station if sufficient.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-06ed93
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/083363-2026
Current Stage
Tender
All Stages
Tender

Procurement Classification

Notice Type
UK4 - Tender Notice
Procurement Type
Standard
Procurement Category
Services
Procurement Method
Open
Procurement Method Details
Below threshold - open competition
Tender Suitability
SME, VCSE
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

71 - Architectural, construction, engineering and inspection services

73 - Research and development services and related consultancy services

CPV Codes

71631440 - Flow-monitoring services

73200000 - Research and development consultancy services

Notice Value(s)

Tender Value
£42,000 Under £100K
Lots Value
£42,000 Under £100K
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
3 Sep 20261 months ago
Submission Deadline
25 Sep 2026Expired
Future Notice Date
Not specified
Award Date
Not specified
Contract Period
1 Oct 2026 - 31 Mar 2028 1-2 years
Recurrence
Not specified

Notice Status

Tender Status
Active
Lots Status
Active
Awards Status
Not Specified
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
Environment Agency
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
LONDON
Postcode
SW1P 4DF
Postcode Area
South West London
Country
England
Major Region (ITL 1)
TLI London
Basic Region (ITL 2)
TLI3 Inner London - West
Small Region (ITL 3)
TLI35 Westminster and City of London
Delivery Location
Not specified
Local Authority
Westminster
Electoral Ward
St James's
Westminster Constituency
Cities of London and Westminster

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

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