+44 (0) 1293 214444
enquiries@unda.co.uk
Flood Risk
Flood Risk Assessment Services
Flood Risk Assessment (FRA) for Planning
Flood Risk Assessment (FRA) for Homebuyers
Flood Risk Assessment (FRA) for Insurance
Flood Risk Assessment (FRA) for Due Diligence
Flood Risk Assessment (FRA) for Business Continuity
Flood Risk Assessment (FRA) for Groundwater
Flood Risk Assessment (FRA) for BREEAM
Flood Consequence Assessment (FCA) for Planning
Flood Warning and Evacuation Plan for Planning
Sequential and Exception Test Reports for Planning
Flood Risk Feasibility Study
Flood Modelling Services
Drainage
Drainage Strategies for Planning
Surface Water Drainage Strategy (SuDS) for Planning
Foul Drainage Strategy for Planning
Discharge of Drainage Planning Conditions
Knowledge
Local Knowledge
Planning Knowledge
River Knowledge
Case Studies
Latest News
Tools
Flood Risk Map
Live River Levels Map
Geology and Ground Conditions Map
Drainage Calculators
BRE 365 Infiltration Rate Calculator
About
About Unda
Flood Risk Consultants
In the Media
Careers
Contact Us
News
All Categories
Deep Dive
Guides & How-Tos
Industry Insights
Insurance & Finance
News & Updates
Policy & Legislation
Technical Insights
Uncategorized
Understanding Flood Risk
All Countries
2024
AI
Annual Probability
Appeals
Beaver
BGS
BRE365
Breach
BREEAM
BS 6297
Canal
Careers
Christmas
CIRIA
CIWEM
Climate Change
Coastal
Coastal Erosion
Conveyancing
Cost
Crawley
Dam
Data
Defra
Drainage
Drains
Drought
EA
Environment Agency
Exception Test
FCC
FCERM
FEMA
Flash Flooding
Flood
Flood Action Week
Flood Consequence Assessment
Flood Data
Flood Defence
Flood Defences
Flood Event
Flood Forecasting Centre
Flood History
Flood Managment
Flood Map
Flood Mapping
Flood Model
Flood Modelling
Flood Risk
Flood Risk Assessment
Flood Risk Consultants
Flood Warning
Flood Zone
Flood Zones
Flooding
floodre
Fluvial
Football
Foul Drainage
FRAP
Funding
GIS
Graduate
Green SuDS
Groundwater
Historic Flooding
History
Hosepipe Ban
Housing
IDB
Infrastructure
insurance
IWC
Jobs
Law
Lending
LLFA
London
Main River
Maintainance
Mayor of London
Met Office
Mortgage
NaFRA2
Natural Flood Management
Natural Resources Wales
Netherlands
NFM
NPPF
NRW
Ofwat
Ordinary Watercourse
OWC
Oxford
PFR
PINS
Pipe Burst
Pitt Review
Planning
Planning Policy
Pluvial
Pol 03
Pol3
Policy
PPG
Property
Property Market
Property Prices
Rainfall
Rescue
Research
Reservoir
Residual Risk
Return Period
Schedule 3
Sea
Sequential Test
Sewage
Sewer
Storm
Storm Chandra
Storm Éowyn
Storm Goretti
SuDS
Surface Water
Surface Water Drainage Strategy
SWIM
TA6
TAN15
Texas Flooding
TfL
Thames Tideway Tunnel
Thames Water
Tidal
Unda
Voids
Vulnerability
Wales
Water Authority
Water Main
Weather
Reset
5 posts found
Permeable Paving for Planning Applications: When It Works and When It Doesn’t
Permeable paving is one of the most common SuDS features used in drainage strategies for planning applications, and on the right site it is one of the most useful. It lets rainfall pass through the surface into a stone sub-base…
Posted on 15th June, 2026
, in
Drainage
, in
LLFA
, in
Planning
, in
SuDS
|
Technical Insights
,
Understanding Flood Risk
.
LLFA Objection to a Planning Application: Why Drainage Strategies Are Rejected and How to Resolve It
Posted on 23rd March, 2026
, in
LLFA
, in
Planning
, in
SuDS
|
Policy & Legislation
,
Understanding Flood Risk
.
Riparian Ownership: Your Rights and Responsibilities in the UK
If you own, rent out or are developing land beside a river, stream, brook or ditch, you are almost certainly a riparian owner, and riparian ownership carries legal duties that most landowners never realise they hold until a flood or…
Posted on 6th June, 2025
, in
Environment Agency
, in
Flood Risk Assessment
, in
FRAP
, in
IDB
, in
LLFA
, in
Natural Flood Management
, in
Planning
|
Guides & How-Tos
,
News & Updates
,
Policy & Legislation
.
Flood and Water Management Act 2010 Explained
The Flood and Water Management Act 2010 is the law that governs how flood risk is managed in England and Wales. It received Royal Assent on 8 April 2010, made county and unitary councils responsible for local flooding, gave the…
Posted on 6th January, 2025
, in
Flood Risk Assessment
, in
LLFA
, in
Pitt Review
, in
Planning
, in
Schedule 3
, in
SuDS
|
News & Updates
,
Policy & Legislation
.
Lead Local Flood Authority (LLFA): What It Is and What It Means for Your Application
A Lead Local Flood Authority (LLFA) is the county council or unitary authority responsible for managing local flood risk across its area: surface water, groundwater and ordinary watercourses. On major planning applications it is a statutory consultee on surface water…
Posted on 26th August, 2024
, in
Drainage
, in
Flood Risk Assessment
, in
LLFA
, in
NPPF
, in
Planning
, in
SuDS
|
News & Updates
,
Policy & Legislation
.