Source: https://tendernation.io/opportunities/01a13d20-e465-704d-9f1d-bd86f788d898/ecosf4-judas-gap-fish-pass-detailed-design awarded GB restricted procedure Suitable for SMEs # EcoSF4: Judas Gap Fish Pass Detailed Design [Environment Agency](https://tendernation.io/buyers/environment-agency) Estimated value £73,826 Published 4 Mar 2026 Deadline Closed 16 Feb 2026 ## Who can bid - Buyer says suitable for SMEs The buyer ticked “suitable for SMEs” on the notice. Anyone can still bid. - Small contract value Valued under £135,018 including VAT, the lowest Procurement Act threshold for goods and services. [More contracts for small businesses and VCSEs](https://tendernation.io/opportunities/for-small-businesses) ## About this tender Judas Gap is an Environment Agency owned structure located at the saline limit on the River Stour on the Essex Suffolk border, NGR TM0799732809. The site already has a pumped eel pass installed in the old fish pass chamber. The Judas Gap structure is critical in terms of fish movements for the Stour, for both freshwater fish that are trapped on the downstream side and migratory fish that require an entry/exit route to the freshwater system, both smelt and sea trout are present in the Stour estuary. The design will also need to ensure that eel passage is maintained. The River Stour has an augmented water supply from the Ely Ouse to Essex Transfer Scheme (EOETS), water is pumped from the Gt Ouse to the top of the rivers Stour and Pant. Located in the Lower Stour is one of the main water supply abstraction points at Cattawade Intake, Essex and Suffolk Water (ESW) abstraction licence number 8/36/15/\*S/0123, NGR TM1004933059. Work has been undertaken in the latest round of the Water Industry Natural Environment Programme (WINEP) to ensure flow continues down the Lower Stour and North Channel during low flow conditions, rather than being abstracted from the middle reaches of the Stour, this has been implemented to prevent large scale fish mortalities and wider ecological harm in this section of the river, the EA has worked with ESW to secure 5mld for the operation of a fish passage solution in this section. The requirement to impound water in this section of the river for public water supply abstraction inhibits the possibility for barrier removal. This section of the River Stour is also a navigable waterway. Read full description ## CPV classification Environmental services Source Contracts Finder (UK) [View official notice](https://www.contractsfinder.service.gov.uk/notice/b5873bc5-91cc-430a-b1b9-a3e994a319ae) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile Environment Agency: past awards and live tenders](https://tendernation.io/buyers/environment-agency) [Sector More Sewage, refuse, cleaning & environmental tenders](https://tendernation.io/sectors/sewage-refuse-cleaning-environmental) ## More tenders like this [Invitation to Tender Window Cleaning Services - Wirral · Wirral Community Health and Care NHS Foundation Trust · 33 days left · 20 Nov 2026](https://tendernation.io/opportunities/01a1539a-cf1d-702b-9ffd-93cfa91d3c7c/invitation-to-tender-window-cleaning-services-wirral) [Cleaning services – Úklidové služby pro budovy JP · České vysoké učení technické v Praze · 15 days left · 3 Nov 2026](https://tendernation.io/opportunities/01a15183-4b75-72e0-8073-c7b65b5d95d9/czechia-cleaning-services-uklidove-sluzby-pro-budovy-jp) [Refuse and waste related services – Keräyspaperin, tietoturvamateriaalin sekä SER-jätteen poistopalvelun hankinta · Espoon kaupunki · 10 days left · 29 Oct 2026](https://tendernation.io/opportunities/01a15183-11dc-7260-9add-88811d0139f2/finland-refuse-and-waste-related-services-kerayspaperin-tietoturvamateriaal) [Radioactive-, toxic-, medical- and hazardous waste services – Vaarajätepalvelu · Helsingin yliopiston kiinteistöpalvelut Oy · 28 days left · 16 Nov 2026](https://tendernation.io/opportunities/01a15183-2d87-7301-b79a-03b45cbf514a/finland-radioactive-toxic-medical-and-hazardous-waste-services-vaarajat) [Refuse transport services – Odbiór odpadów komunalnych z terenu miasta Maków Mazowiecki · Miasto Maków Mazowiecki · 35 days left · 23 Nov 2026](https://tendernation.io/opportunities/01a15183-3f12-7325-9c2f-18eb44993615/poland-refuse-transport-services-odbior-odpadow-komunalnych-z-terenu-miasta) [Waste-tip management services – Odbiór i zagospodarowanie niesegregowanych (zmieszanych) odpadów komunalnych wraz z selektywną ich zbiórką z terenu Gminy Łowicz w 2027 roku · Gmina Łowicz · 30 days left · 18 Nov 2026](https://tendernation.io/opportunities/01a15183-4a21-72a8-8b90-2d7f33a3108f/poland-waste-tip-management-services-odbior-i-zagospodarowanie-niesegregowan)