Great Notley Flood Risk

Rivers and the sea Not mapped no mapped rivers or sea risk

Surface water 354 addresses at risk that rivers and sea does not explain — a minimum, not a total

Groundwater Not mapped No national band is published for this source

Reservoirs Not mapped No national band is published for this source

Great Notley has no mapped rivers-and-sea flood risk: neither the national risk assessment nor the planning Flood Zone map covers it. That is not a statement that Great Notley cannot flood — this figure covers rivers and the sea only, and surface water flooding is not included. The nearest gauge is 2.4 km away.

Great Notley has 7,607 residents and 3,077 homes. Ranked equal 3078 of 7,114 — the places where the national risk assessment maps no rivers-and-sea exposure for any home, so the position is a tie rather than a low score.

What Is The River Level Near Great Notley Right Now?

The nearest gauge is Braintree, 2.4 km from the centre of Great Notley, at Rayne. Its typical range is 0.195 m to 0.8 m, and the highest level on record is 1.311 m, reached on 9 February 2024.

No current reading has been published for this gauge.

This river has too few gauges for its own page

What Does Great Notley's Flood Risk Classification Mean?

0% of postcodes in Great Notley sit in Flood Zone 3, the planning band for land with a 1% or greater annual chance of river flooding or 0.5% or greater of sea flooding — and the map that draws it deliberately ignores flood defences.

The flood risk band for rivers and the sea is not mapped here, which means the national assessment finds no rivers-and-sea exposure for Great Notley's homes rather than a low amount of it. That is a statement about rivers and the sea only: surface water flooding is not included, and it is the larger source nationally.

Flood Zone versus flood risk band: the full comparison

Which Postcode Districts Cover Great Notley?

Each district below is one postcode district that falls inside Great Notley. The band is the one shared by most of that district's postcodes, so it describes the district rather than a single street — enter a full postcode in the checker for one address. A district can cover more than one town, and the district pages linked from the checker are keyed to the town that holds most of its postcodes.

Postcode districts covering Great Notley, with the flood risk band shared by most of each district's postcodes. A district can span more than one local area, so its band is a summary and not a property-level answer.
Postcode district	Postcodes here	Rivers and sea band	Surface water addresses
CM77	154	Low	354

What Else Is Near Great Notley?

Essex flood risk Every town ranked in this county
Flood risk in England How this nation classifies flood risk, and its gaps
What each flood risk level means The annual chance behind each band word