天涯社区

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Lead Local Flood Authority


天涯社区 has been designated as the Lead Local Flood Authority (LLFA) for 天涯社区.

As a Lead Local Flood Authority, 天涯社区 has a range of regulatory and permissive powers in relation to flood risk management and are responsible for managing flood risk from surface water, ground water, and ordinary watercourses. We also work with other organisations and people to manage flood risk from all sources across 天涯社区.

As a regulatory body (Lead Local Flood Authority), we have a duty to manage flood risk from surface water, groundwater and ordinary watercourses. An ordinary watercourse is any watercourse that is not a main river managed by the .

Responsibilities include:

  • co-ordinating the management of flood risk from these sources across 天涯社区, bringing together all the relevant stakeholders
  • giving consent or otherwise for applications for any work within close proximity to or that may affect the flow of ordinary watercourses (land drainage consent)
  • acting as a statutory consultee on surface water drainage proposals for planning applications
  • recording and investigating any significant flooding
  • establishing and maintaining a flood risk asset register

To tackle flood risk in an integrated way across the region, we are a member of the North Wales Flood Risk Management group which includes 6 local authorities and other key stakeholders including , and . 

Managing flood risk from surface and ground water and ordinary watercourses

We work in partnership with organisations and individuals responsible for managing flood risk from other sources, including cross border sources.

These include:

  • Neighbouring authorities
  • Businesses, landowners, householders and community groups

Reporting a flood

The Risk Management Authority responsible for managing flooding issues differs depending on the source of flooding. See our ‘Flooding and Drainage’ put together by the Highways Authority for specific details but in short:

Water main flooding

Report to either  or . Check your water bill to see who your supplier is. 


Drains and sewer flooding

Flooding from Private drains are the responsibility of the property owner.

Flooding from Private sewers which are systems that convey foul sewerage and/or surface water runoff from more than one property should be reported to .

Flooding from public sewers should be reported to .


Main river and coastal flooding

Report to  by contacting their Floodline on 03000 65 3000; a 24 hour advice line.


Highway flooding

Contact 天涯社区s Streetscene department on 01352 701234


Ordinary watercourses

Ordinary watercourse (e.g. streams or ditches) are the responsibility of ‘riparian’ owners.

天涯社区 acting as the Lead Local Flood Authority can help investigate issues and has powers to ensure there is no impediment to watercourse flows.

Local Flood Risk Management Strategy

Under the Flood and Water Management Act (FWMA), 天涯社区 as the designated Lead Local Flood Authority, is required to develop, maintain, apply and monitor a strategy for local flood risk management (Local Flood Risk Management Strategy). In the FWMA, local flood risk is defined as flood risk from surface water runoff, groundwater, and ordinary watercourses. Main river flooding remains the responsibility of Natural Resources Wales.

The local strategy sets out the councils overarching approach to managing local flood risk within 天涯社区. It also identifies what main risks exist within communities, the main Risk Management Authorities (RMAs) including their responsibilities for flood risk, and what communities can do for themselves.

天涯社区 published its first LFRMS in 2013 and is currently in the process of updating this strategy to align with the 2020 National LFRMS produced by Welsh Government.

Refer to the useful documents section for the existing strategy. 

Flood Risk Asset Register

天涯社区 has a duty under the Flood and Water Management Act (FWMA) to maintain a register of structures and features (assets) which they consider to have a significant effect on flood risk within its area.

For further information, contact the Flood Risk Management Team 

Land drainage Consenting and Enforcement

If you are planning on carrying out works in or near a watercourse, you may need an ordinary watercourse consent from 天涯社区 who are a Lead Local Flood Authority. These works include building any structure (even a temporary one), tree or shrub planting within or near an ordinary watercourse within 天涯社区. 

Even if you have planning permission or other consents you may still require consent from us for work on/adjacent to ordinary watercourses.

Under the Land Drainage Act 1991 Section 23 the erection or alteration of any mill dam, culvert, weir or other like obstruction to the flow of an ordinary watercourse requires consent from 天涯社区 as the Lead Local Flood Authority (LLFA).

Further details on these can be found on our dedicated Land Drainage Consent page.

Sustainable Drainage Systems

天涯社区 is designated as the Sustainable Drainage System Approval Body (SAB) for 天涯社区 but this is separate from its duties as a Lead Local Flood Authority.

For further detail on SuDS please see our ‘Sustainable Drainage Systems’ Page.

Riparian owners

 Land drainage can be a complex area of responsibility but in short, you are a considered 'riparian landowner' if you own land which a watercourse runs through, beneath or adjacent to the boundary of your land. Watercourses include all rivers, streams, ditches, drains, cuts, culverts (piped sections), dikes, sluices and passages through which water flows. 

Visit the for more details.

Protecting your property from floods

Flooding is a natural process and rivers will naturally spill out onto their floodplains during periods of extended or intense rainfall. Flooding becomes a hazard when flood water shares the same space as people and property.

If you are buying a house, extending your home or making a planning application, please check your flood risk using the . Remember to check both the flood risk from rivers or the sea and the flood risk from surface water for a full picture of risk at your location.

If you live in a flood risk area, you need to understand that risk and plan for flooding. Have an action plan ready in the event of flooding and ensure that your property has the correct insurance, flood resilience and resistance measures in place.

Please see our ‘Floods’ page put together by our emergency planning team for more details.