Environment Agency064WAF321Kent S London and E Sussex

Upper River Medway: flood history since 2012

The Environment Agency has issued 111 flood alerts for Upper River Medway since 29 Apr 2012, most often in December; the busiest year was 2023 (14).

Flood alerts only

The flood area

Flood area: Upper River Medway
Code: 064WAF321
Environment Agency area: Kent S London and E Sussex
County: East Sussex, Kent, Surrey, West Sussex
River or sea: River Medway
First in the history: 29 Apr 2012
Latest in the history file: 18 Feb 2026
Current status: check-for-flooding.service.gov.uk (the Environment Agency's live page)

Source: Environment Agency, Historic Flood Warnings (England); Environment Agency flood-monitoring API. Contains public sector information licensed under the Open Government Licence v3.0.

2023 was the busiest year for Upper River Medway

Flood alerts, flood warnings and severe flood warnings (updates not counted), by year. 2026 runs to the end of June.

The numbers

Year	Alerts	Warnings	Severe
2026	7	0	0
2025	5	0	0
2024	13	0	0
2023	14	0	0
2022	8	0	0
2021	8	0	0
2020	13	0	0
2019	8	0	0
2018	2	0	0
2017	3	0	0
2016	9	0	0
2015	1	0	0
2014	8	0	0
2013	3	0	0
2012	9	0	0

Source: Environment Agency, Historic Flood Warnings (England); Environment Agency flood-monitoring API. Contains public sector information licensed under the Open Government Licence v3.0.

Most often in December

All alerts and warnings since 2012 by month.

Source: Environment Agency, Historic Flood Warnings (England); Environment Agency flood-monitoring API. Contains public sector information licensed under the Open Government Licence v3.0.

Source: Environment Agency, Historic Flood Warnings (England); Environment Agency flood-monitoring API. Contains public sector information licensed under the Open Government Licence v3.0.