Medway Cannon Bridge
EA name: MEDWAY CANNON BRIDGE (also listed as “CANNON BRIDGE TONBRIDGE RIVER MEDWAY”)
Environment Agency sampling point SO-E0000400 · Freshwater - rivers · listed as open (“open” does not mean it is sampled now)
These are samples taken on a date, not live readings of the river. Results reach the Environment Agency's archive days to months after the sample is taken, so the newest here may be weeks or months old. FloodRadar does not grade them.
Where and when
- Last sampled
- 27 Aug 2026, 10:5858 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 9 since 1 Nov 2023 Imported periods: 1 Oct 2023 – 24 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy) · results completed 4 Sep 2026
- Where
- National Grid 559700, 146500As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Medway
- River, by the map
- River MedwayPlaced on the river its name gives, 21 m from the line.
- Next gauge downstream
- Hartlake Bridge On the River Medway · 3.8 km along the river
- Nearest gauge upstream
- Town Lock On the River Medway · 0.5 km along the river
- Why it was sampled
- Monitoring (national agency policy) (7 samples)
Environmental monitoring statutory (EU directives) (2 samples)
Results here were completed a median of 8 days after the sample was taken (8 to 8 days, 1 samples).
Main measurements, river water
pH
code 0061
8.36
Sampled 27 Aug 2026, 58 days ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 Aug 2026, 10:58 | 8.36 | 8.36 |
| 12 May 2026, 14:46 | 7.49 | 7.49 |
| 5 Feb 2026, 13:42 | 7.85 | 7.85 |
| 13 Jan 2025, 15:31 | 7.56 | 7.56 |
| 4 Dec 2024, 08:31 | 7.48 | 7.48 |
| 5 Sep 2024, 09:54 | 7.46 | 7.46 |
| 19 Jun 2024, 08:43 | 7.62 | 7.62 |
| 6 Mar 2024, 15:03 | 7.47 | 7.47 |
| 1 Nov 2023, 13:27 | 7.46 | 7.46 |
Everything measured here
5 determinands, each kept by its code, unit and sample material: results in different units or on different materials are never mixed. A “below” result is under the laboratory's detection limit, not zero.
Show all 5 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| pH 0061 | River water | 9 | Nov 2023 – Aug 2026 | 8.36 27 Aug 2026 |
| Calcium, Dissolved 0239 | River water | 9 | Nov 2023 – Aug 2026 | 36 mg/l 27 Aug 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 8 | Nov 2023 – Aug 2026 | 5.7 mg/l 27 Aug 2026 |
| Iron, Dissolved 6460 | River water | 9 | Nov 2023 – Aug 2026 | below 30 µg/l 27 Aug 2026 |
| Magnesium, Dissolved 0235 | River water | 9 | Nov 2023 – Aug 2026 | 5 mg/l 27 Aug 2026 |
FloodRadar does not grade these results: there is no overall score, and official river classifications are a separate dataset. A sample taken downstream of an overflow does not by itself show where anything in it came from. River connections and distances are traced on OS Open Rivers (edition 2026-04), which leaves out many small channels.
Water samples: Environment Agency Water Quality Archive, © Environment Agency and/or database right 2026, Open Government Licence v3.0.
Contains OS data © Crown copyright and database rights 2026.