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New CIRIA guidance encourages communities to help maintain local flood defences

New guidance published by CIRIA is encouraging communities to play a more active role in maintaining local flood risk assets, including drainage channels, culverts and smaller flood defence structures. The guidance forms a three-part suite (C821) aimed at supporting community…
Posted on 6th March, 2026
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The CIRIA SuDS Manual (C753): What It Is and How to Use It in 2026

The CIRIA SuDS Manual (C753) is the UK's principal design guide for sustainable drainage systems: 968 pages covering how SuDS should be planned, designed, built, operated and maintained. CIRIA published it in November 2015 to replace the original 2007 manual,…
Posted on 26th January, 2026
, in SuDS 
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Early SuDS Planning: CIRIA C823F and What the 2026 NPPF Now Requires

Early SuDS planning means settling the surface water question at land acquisition and site appraisal, before roads, levels and plot positions are fixed. Since 17 August 2026 that is no longer only good practice. CIRIA's guide Enabling development: Getting SuDS…
Posted on 6th October, 2025
, in SuDS 
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