Land drainage
As the lead local flood authority for Kent, we have powers to regulate watercourses in Kent. A watercourse is a channel which water flows through, this includes; rivers, streams, ditches, shallow trenches which carry water infrequently and culverts.
Our responsibility
We are the responsible authority for ordinary watercourses that are outside of the internal drainage districts and main river networks.
We have powers to regulate the proper function of ordinary watercourses in two ways:
- by maintaining the free flow of land drainage, including the enforcement of riparian responsibility to maintain flow and structures in an ordinary watercourse
- to consent and enforce structures in ordinary watercourses and changes to the alignment of ordinary watercourses.
Find out who's responsible for the watercourse use our land drainage consents map (PDF, 857.0 KB).
Private landowners
A private landowner is considered by law to be a ‘riparian owner’ if you own land which:
- is located next to an ordinary watercourse, or
- has an ordinary watercourse running through or underneath it.
Joint riparian owners
If the land on the other side of the watercourse does not belong to you, you’re presumed to be a joint riparian owner, together with the landowner on the opposite side of the watercourse. Unsure who owns the land? Visit the Land Registry website to get copies of the title register and plans.
The dividing line for each joint riparian owner is presumed by the centre line of the watercourse and each is responsible for their side of the watercourse and the clear flow of water through it.
The riparian owners are responsible for the maintenance of the channel, banks, including culverted sections, pipe or other structures. To find out more about the responsibilities of ownerships read:
- our guide for ownership responsibility for rivers and ditches (PDF, 48.6 KB)
- the Environment Agency's guide to the rights and responsibilities of riverside ownership
Local borough and district councils can carry out flood risk management works on minor watercourses.
Internal Drainage Boards
The Internal Drainage Boards (IDB) is the operating drainage authority responsible for their designated drainage district. They manage and directly maintain watercourses in their district for:
- land drainage
- flood risk management
- environmental protection and enhancement
- water level management purposes.
While they undertake routine maintenance, the overall responsibility still lies with the riparian owner. The IDB also have a general supervisory duty over all drainage matters within their districts and have consenting and enforcing powers for work carried out.
Land drainage consent
To complete work on or near a watercourse which is not a main river and is not looked after by Internal Drainage Board (IDB), you may need land drainage consent from us.
To find out if you need consent from us, find out who's responsible for the watercourse use our land drainage consents map (PDF, 857.0 KB).
Pre-application advice
We provide pre-application advice for a fee on land drainage consents for most major developments.
Our advice can:
- indicate whether a land drainage proposal would be acceptable
- reduce the time your advisers spend on developing a drainage strategy
- ensure your submission is complete so it doesn't get rejected in the early stages
- let you know how guidance and policies will be applied to your development
- identify whether you need specialist input.
This advice is only available for sites where we are the land drainage authority. Advice for areas within an IDB or watercourses classified as main river will require discussions with the relevant authority.
Chargeable advice
Land drainage pre-application advice fees
All fees include VAT:
| Advice and meetings | Cost |
|---|---|
| Written advice for a general site enquiry or flood risk assessment enquiry | £240 |
| Meeting at County Hall | £360 |
| Meeting on site | £480 |
| Further written advice after meetings | £180 |
| Any other correspondence | Price upon application |
We also offer pre-application surface water management in major developments. This is a separate service. We can arrange meetings with our SuDS team and land drainage engineer. This will allow you to discuss your site's drainage issues in depth.
Land drainage and surface water management pre-application advice fees
All fees include VAT:
| Meeting location | Cost |
|---|---|
| At County Hall or online | £540 |
| Meeting on site | £720 |
Apply for consent
We may tell you that you don't need consent or give you advice that will help avoid delays. Before you apply read the guidance notes for land drainage consent (PDF, 183.1 KB).
Unable to use the form or unsure what type of watercourse your planned work is on? Contact us:
- email: flood@kent.gov.uk
- call: 03000 41 41 41.
Cost
£50 per structure.
You will be asked to pay the fee as part of the application process. The cost is an admin fee for each structure which is set within the legislation. The fee is non-refundable, even if your application is declined.
Pollution prevention
Please read the pollution prevention guidelines (GPP5) on the GOV.UK website to ensure that your works in or near an ordinary watercourse protect the environment and meet the legal requirements.