Swere above Cherwell at Bloxham Bridge,
EA name: SWERE ABOVE CHERWELL AT BLOXHAM BRIDGE, (also listed as “SWERE ABOVE CHERWELL AT BLOXHAM BRIDGE, ADDERBURY”)
Environment Agency sampling point TH-PCHR0048 · 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
- 1 Sep 2026, 10:1330 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 30 since 5 Apr 2024 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- Any water Monitoring (national agency policy)
- Where
- National Grid 446100, 233200As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Swere
- River, by the map
- River SwerePlaced on the river its name gives, 21 m from the line.
- Next gauge downstream
- Heyford Bridge On the River Cherwell · 18 km along the river
- Why it was sampled
- Monitoring (national agency policy) (30 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
101.8%
Sampled 19 Mar 2025, 18 months ago · 12 results banked
Also measured in percentage on another sample material (2ZZZ): 18 results, kept apart (see the table).
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 19 Mar 2025, 10:26 | 101.8 | 101.8% |
| 4 Feb 2025, 12:17 | 97.8 | 97.8% |
| 9 Jan 2025, 11:58 | 95.5 | 95.5% |
| 2 Dec 2024, 10:16 | 94.1 | 94.1% |
| 13 Nov 2024, 12:02 | 96 | 96% |
| 8 Oct 2024, 10:10 | 92.1 | 92.1% |
| 4 Sep 2024, 10:47 | 86 | 86% |
| 8 Aug 2024, 10:25 | 92.7 | 92.7% |
| 22 Jul 2024, 13:12 | 95 | 95% |
| 25 Jun 2024, 11:39 | 90.2 | 90.2% |
| 3 May 2024, 12:11 | 97 | 97% |
| 5 Apr 2024, 09:08 | 90.7 | 90.7% |
Dissolved oxygen
as O2 · code 9924 · mg/l
12.8 mg/l
Sampled 19 Mar 2025, 18 months ago · 12 results banked
Also measured in milligram per litre on another sample material (2ZZZ): 18 results, kept apart (see the table).
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 19 Mar 2025, 10:26 | 12.8 | 12.8 mg/l |
| 4 Feb 2025, 12:17 | 12 | 12 mg/l |
| 9 Jan 2025, 11:58 | 12.2 | 12.2 mg/l |
| 2 Dec 2024, 10:16 | 10.8 | 10.8 mg/l |
| 13 Nov 2024, 12:02 | 11.1 | 11.1 mg/l |
| 8 Oct 2024, 10:10 | 9.86 | 9.86 mg/l |
| 4 Sep 2024, 10:47 | 8.76 | 8.76 mg/l |
| 8 Aug 2024, 10:25 | 9.18 | 9.18 mg/l |
| 22 Jul 2024, 13:12 | 9.2 | 9.2 mg/l |
| 25 Jun 2024, 11:39 | 8.84 | 8.84 mg/l |
| 3 May 2024, 12:11 | 10.7 | 10.7 mg/l |
| 5 Apr 2024, 09:08 | 9.96 | 9.96 mg/l |
Water temperature
code 0076 · °C
5.6 °C
Sampled 19 Mar 2025, 18 months ago · 12 results banked
Also measured in celsius on another sample material (2ZZZ): 18 results, kept apart (see the table).
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 19 Mar 2025, 10:26 | 5.6 | 5.6 °C |
| 4 Feb 2025, 12:17 | 6.6 | 6.6 °C |
| 9 Jan 2025, 11:58 | 4.8 | 4.8 °C |
| 2 Dec 2024, 10:16 | 9.2 | 9.2 °C |
| 13 Nov 2024, 12:02 | 8.8 | 8.8 °C |
| 8 Oct 2024, 10:10 | 12.2 | 12.2 °C |
| 4 Sep 2024, 10:47 | 14.4 | 14.4 °C |
| 8 Aug 2024, 10:25 | 15.7 | 15.7 °C |
| 22 Jul 2024, 13:12 | 16.8 | 16.8 °C |
| 25 Jun 2024, 11:39 | 16.2 | 16.2 °C |
| 3 May 2024, 12:11 | 10.9 | 10.9 °C |
| 5 Apr 2024, 09:08 | 11.1 | 11.1 °C |
pH
code 0061
8.13
Sampled 19 Mar 2025, 18 months ago · 12 results banked
Also measured in ph units on another sample material (2ZZZ): 18 results, kept apart (see the table).
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 19 Mar 2025, 10:26 | 8.13 | 8.13 |
| 4 Feb 2025, 12:17 | 8.08 | 8.08 |
| 9 Jan 2025, 11:58 | 8.09 | 8.09 |
| 2 Dec 2024, 10:16 | 7.94 | 7.94 |
| 13 Nov 2024, 12:02 | 8.05 | 8.05 |
| 8 Oct 2024, 10:10 | 7.94 | 7.94 |
| 4 Sep 2024, 10:47 | 7.95 | 7.95 |
| 8 Aug 2024, 10:25 | 8.1 | 8.1 |
| 22 Jul 2024, 13:12 | 8.1 | 8.1 |
| 25 Jun 2024, 11:39 | 7.96 | 7.96 |
| 3 May 2024, 12:11 | 8.18 | 8.18 |
| 5 Apr 2024, 09:08 | 7.95 | 7.95 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 19 Mar 2025, 18 months ago · 10 results banked
Also measured in milligram per litre on another sample material (2ZZZ): 18 results, kept apart (see the table).
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 19 Mar 2025, 10:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Feb 2025, 12:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Jan 2025, 11:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Dec 2024, 10:16 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Nov 2024, 12:02 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Oct 2024, 10:10 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Sep 2024, 10:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Aug 2024, 10:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Jul 2024, 13:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Jun 2024, 11:39 | <0.03 | below 0.03 mg/l (not detected above this) |
Everything measured here
6 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 12 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 12 | Apr 2024 – Mar 2025 | 101.8% 19 Mar 2025 |
| Oxygen, Dissolved, % Saturation 9901 | Any water | 18 | Apr 2025 – Sep 2026 | 65.8% 1 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 12 | Apr 2024 – Mar 2025 | 12.8 mg/l 19 Mar 2025 |
| Oxygen, Dissolved as O2 9924 | Any water | 18 | Apr 2025 – Sep 2026 | 6.7 mg/l 1 Sep 2026 |
| Temperature of Water 0076 | River water | 12 | Apr 2024 – Mar 2025 | 5.6 °C 19 Mar 2025 |
| Temperature of Water 0076 | Any water | 18 | Apr 2025 – Sep 2026 | 14.4 °C 1 Sep 2026 |
| pH 0061 | River water | 12 | Apr 2024 – Mar 2025 | 8.13 19 Mar 2025 |
| pH 0061 | Any water | 18 | Apr 2025 – Sep 2026 | 7.89 1 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 10 | Jun 2024 – Mar 2025 | below 0.03 mg/l 19 Mar 2025 |
| Ammoniacal Nitrogen as N 0111 | Any water | 18 | Apr 2025 – Sep 2026 | below 0.03 mg/l 1 Sep 2026 |
| Phosphorus, Total as P 0348 | River water | 10 | Jun 2024 – Mar 2025 | 0.03 mg/l 19 Mar 2025 |
| Phosphorus, Total as P 0348 | Any water | 18 | Apr 2025 – Sep 2026 | 0.056 mg/l 1 Sep 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.