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Investigations into flooding

As the Lead Local Flood Authority (LLFA) for Neath Port Talbot, one of our new responsibilities is a duty to investigate flooding that occurs within the Borough as we deem necessary.

Section 19 of the Flood and Water Management Act 2010 outlines that:

  1. On becoming aware of a flood in its area, a lead local flood authority must, to the extent that it considers it necessary or appropriate, investigate:
    1. which risk management authorities have relevant flood risk management functions, and
    2. whether each of those risk management authorities has exercised, or is proposing to exercise, those functions in response to the flood.
  2. Where an authority carries out an investigation under subsection (1) it must:
    1. publish the results of its investigation, and
    2. notify any relevant risk management authorities.

The need to investigate a particular flood is determined case-by-case considering factors such as the number of properties affected and the likely source of flooding.

Generally these reports will include the following:

  • background information on the location
  • a summary of the rainfall event
  • information on the extent of the flooding
  • investigation findings
  • an indication of the roles and responsibilities of each risk management authority and the action taken or proposed by those risk management authorities
  • recommendations arising from the investigation 

The results of any flood investigations that we undertake will be published on this page.



  • Investigation report into flooding incident of 3rd November 2022 St. Catherine's Close (PDF 4.15 MB)

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