Weirwood
Southern Water · 👁 117 views
85.0%
full
Where it is
Approximate location. Satellite imagery © Esri.
Level history
This time of year, in past years
| Year | % full (nearest reading) |
|---|---|
| 2025 | 91.3% |
| 2024 | 100.0% |
| 2023 | 85.0% |
| 2022 | 50.7% |
| 2021 | 100.0% |
| 2020 | 90.2% |
| 2019 | 98.6% |
| 2018 | 86.8% |
| 2017 | 79.1% |
| 2016 | 83.9% |
| 2015 | 78.3% |
| 2014 | 89.3% |
| 2013 | 71.1% |
| 2012 | 94.6% |
| 2011 | 41.6% |
| 2010 | 61.8% |
| 2009 | 45.3% |
| 2008 | 75.8% |
| 2007 | 85.6% |
| 2006 | 56.2% |
| 2005 | 27.3% |
| 2004 | 55.2% |
| 2003 | 44.3% |
| 2002 | 74.9% |
Nearest reading within 10 days either side of today's date, for each year on record.
El Niño 2026–27The tropical Pacific is running 3.3 °C above normal (week of 4–10 October 2026).What past El Niño winters brought Britain → Nearby river gauges
ARDINGLY SHELLBROOK GS
8.5 km
ARDINGLY OUSE GS
8.8 km
Where this comes from. Reservoir data © the UK water companies, from their published reservoir-level reports and the Stream water-industry open data portal (CC BY 4.0). Thames Water London history via the London Datastore (Open Government Licence v2). Figures are exactly as published by Southern Water — reporting day and
rounding vary. Levels older than 21 days are marked "last reported" rather than treated as current.
Reservoir facts. Reservoir facts (coordinates, capacity, type, purpose, construction date and downstream gauge) from the UK Reservoir Inventory. Contains data supplied by UK Centre for Ecology & Hydrology (Durant & Counsell, 2018, Open Government Licence v3.0).