River Arun internal drainage district (IDD)
Arrangements on how to manage flood risk in the River Arun internal drainage district (IDD).
Applies to England
Documents
Details
Internal drainage boards (IDBs) are public bodies that manage water levels in some areas where there is a special need for drainage. We call these areas internal drainage districts (IDDs).
The Environment Agency inherited the administration of 6 IDDs in Sussex. Of these, 5 of the 6 IDDs have now been abolished. The remaining IDD is the River Arun. The Environment Agency will continue to act as the IDB until an alternative route forward can be determined with the stakeholders within the IDD.
If you would like more information on this or want to be involved, please contact the Arun IDB email riverarunidb@environment-agency.gov.uk.
This page has information on River Arun IDD and incudes:
- planned maintenance programme
- exercise of public rights for the annual accounts
- annual governance and accountability return
- annual internal audit report
- annual governance statement
- annual accounting statement
- external auditor report and certificate
- notice of conclusion of audit
- section 48 notice
For some PDFs we have provided a HTML equivalent to meet the accessibility regulations.
For previous River Arun IDD content visit the National Archives.
If you require any further information please email enquiries@environment-agency.gov.uk.
Updates to this page
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Updated for 2025 to 2026. Added making provision for the exercise of public rights, annual governance and accountability return, annual internal audit report, matters of Internal Control, annual governance statement, accounting statements and maintenance programme.
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Added River Arun: section 48 notice - year ending 31 March 2027
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Added 2024-2025 notice of conclusion of audit, annual governance statements section 3, and removed the previous set of documents for 2023-2024.
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Correction of 1 date in exercise of public rights document.
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Added 2024-2025 governance statements, exercise of public rights, and removed the previous set of documents for 2023-2024
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Added exercise of public rights 2024 to 2025.
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Added internal drainage district planned maintenance programme 2025 to 2026.
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Added River Arun: section 48 notice - year ending 31 March 2026. New charges and special levies.
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Added River Arun: notice of conclusion of audit 2023 to 2024 and the annual governance statement 2023 to 2024 - section 3.
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Added matters of internal control 2023 to 2024 document.
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Added HTML files of River Arun annual governance and accounting statements and governance and accountability returns for 2023 to 2024. Deleted the corresponding documents for 2022 to 2023.
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Added a section 48 notice for year ending 31 March 2025. Deleted section 48 notices for years ending 31 March 2023 and 2024.
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Added River Arun: annual internal audit report 2023 to 2024, annual governance and accountability return 2023 to 2024 page 1 and 2, Internal Audit AGAR report - matters of internal control 2024, annual governance statements 2023 to 2024, planned maintenance programme 2024 to 2025.
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Added Exercise of Public Rights for the annual accounts for 2023 to 2024
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River Arun: internal drainage district planned maintenance programme updated for 2023 to 2024.
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The River Arun: notice of conclusion of audit and section 3 – external auditor report and certificate for 2022 to 2023 has been uploaded.
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The page content has been updated to show 2022 to 2023 content. A link to the National Archives has been added on the page to access documents of previous years.
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The River Arun annual governance accountability 2022 to 2023 return has been added.
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First published.