Marcham Brook at Fyfield
EA name: MARCHAM BROOK AT FYFIELD
Environment Agency sampling point TH-POCR0010 · 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
- 13 Mar 2026, 10:287 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone). Not sampled since, as far as the archive shows: the Environment Agency was asked up to 30 Sep 2026 and had nothing newer.
- Samples banked
- 22 since 27 Jun 2024 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Environmental monitoring statutory (EU directives)
- Where
- National Grid 442665, 198845As published, to the nearest 1 m. Open in a map
- River, by its own name
- Marcham Brook
- River, by the map
- An unnamed streamOn a small stream traced into the river its name gives, 3 m from the line.
- Next gauge downstream
- Abingdon On the River Ock · 8.7 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (22 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
83.6%
Sampled 13 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2026, 10:28 | 83.6 | 83.6% |
| 24 Feb 2026, 12:44 | 81 | 81% |
| 30 Jan 2026, 12:26 | 82.2 | 82.2% |
| 10 Dec 2025, 09:41 | 81 | 81% |
| 18 Nov 2025, 11:03 | 83.6 | 83.6% |
| 30 Oct 2025, 09:13 | 54 | 54% |
| 25 Sep 2025, 10:54 | 77.4 | 77.4% |
| 13 Aug 2025, 10:07 | 60.6 | 60.6% |
| 28 Jul 2025, 12:41 | 66.7 | 66.7% |
| 27 Jun 2025, 11:40 | 62.7 | 62.7% |
| 22 May 2025, 10:48 | 75.5 | 75.5% |
| 28 Apr 2025, 10:12 | 71.3 | 71.3% |
| 24 Mar 2025, 11:54 | 82.1 | 82.1% |
| 21 Feb 2025, 13:16 | 88.8 | 88.8% |
| 14 Jan 2025, 13:46 | 91.4 | 91.4% |
| 11 Dec 2024, 11:48 | 88.8 | 88.8% |
| 20 Nov 2024, 10:32 | 87.1 | 87.1% |
| 10 Oct 2024, 09:45 | 84.6 | 84.6% |
| 6 Sep 2024, 11:52 | 70.8 | 70.8% |
| 6 Aug 2024, 14:35 | 68.2 | 68.2% |
| 24 Jul 2024, 10:47 | 80.3 | 80.3% |
| 27 Jun 2024, 10:14 | 67.2 | 67.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.81 mg/l
Sampled 13 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2026, 10:28 | 9.81 | 9.81 mg/l |
| 24 Feb 2026, 12:44 | 9.04 | 9.04 mg/l |
| 30 Jan 2026, 12:26 | 9.77 | 9.77 mg/l |
| 10 Dec 2025, 09:41 | 9.24 | 9.24 mg/l |
| 18 Nov 2025, 11:03 | 10.2 | 10.2 mg/l |
| 30 Oct 2025, 09:13 | 6.22 | 6.22 mg/l |
| 25 Sep 2025, 10:54 | 8.36 | 8.36 mg/l |
| 13 Aug 2025, 10:07 | 5.69 | 5.69 mg/l |
| 28 Jul 2025, 12:41 | 6.54 | 6.54 mg/l |
| 27 Jun 2025, 11:40 | 6.08 | 6.08 mg/l |
| 22 May 2025, 10:48 | 7.97 | 7.97 mg/l |
| 28 Apr 2025, 10:12 | 7.65 | 7.65 mg/l |
| 24 Mar 2025, 11:54 | 9.45 | 9.45 mg/l |
| 21 Feb 2025, 13:16 | 9.89 | 9.89 mg/l |
| 14 Jan 2025, 13:46 | 11.1 | 11.1 mg/l |
| 11 Dec 2024, 11:48 | 10.6 | 10.6 mg/l |
| 20 Nov 2024, 10:32 | 10.7 | 10.7 mg/l |
| 10 Oct 2024, 09:45 | 9.01 | 9.01 mg/l |
| 6 Sep 2024, 11:52 | 6.9 | 6.9 mg/l |
| 6 Aug 2024, 14:35 | 6.51 | 6.51 mg/l |
| 24 Jul 2024, 10:47 | 7.82 | 7.82 mg/l |
| 27 Jun 2024, 10:14 | 6.45 | 6.45 mg/l |
Water temperature
code 0076 · °C
8.3 °C
Sampled 13 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2026, 10:28 | 8.3 | 8.3 °C |
| 24 Feb 2026, 12:44 | 10.4 | 10.4 °C |
| 30 Jan 2026, 12:26 | 7.8 | 7.8 °C |
| 10 Dec 2025, 09:41 | 9.5 | 9.5 °C |
| 18 Nov 2025, 11:03 | 6.9 | 6.9 °C |
| 30 Oct 2025, 09:13 | 9.1 | 9.1 °C |
| 25 Sep 2025, 10:54 | 11.8 | 11.8 °C |
| 13 Aug 2025, 10:07 | 18.3 | 18.3 °C |
| 28 Jul 2025, 12:41 | 16.2 | 16.2 °C |
| 27 Jun 2025, 11:40 | 16.7 | 16.7 °C |
| 22 May 2025, 10:48 | 12.8 | 12.8 °C |
| 28 Apr 2025, 10:12 | 12.1 | 12.1 °C |
| 24 Mar 2025, 11:54 | 9.1 | 9.1 °C |
| 21 Feb 2025, 13:16 | 10.5 | 10.5 °C |
| 14 Jan 2025, 13:46 | 7 | 7 °C |
| 11 Dec 2024, 11:48 | 7.7 | 7.7 °C |
| 20 Nov 2024, 10:32 | 6.6 | 6.6 °C |
| 10 Oct 2024, 09:45 | 12.4 | 12.4 °C |
| 6 Sep 2024, 11:52 | 16.5 | 16.5 °C |
| 6 Aug 2024, 14:35 | 17.5 | 17.5 °C |
| 24 Jul 2024, 10:47 | 16.5 | 16.5 °C |
| 27 Jun 2024, 10:14 | 17.2 | 17.2 °C |
pH
code 0061
7.89
Sampled 13 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2026, 10:28 | 7.89 | 7.89 |
| 24 Feb 2026, 12:44 | 7.9 | 7.9 |
| 30 Jan 2026, 12:26 | 7.91 | 7.91 |
| 10 Dec 2025, 09:41 | 7.87 | 7.87 |
| 18 Nov 2025, 11:03 | 7.88 | 7.88 |
| 30 Oct 2025, 09:13 | 7.91 | 7.91 |
| 25 Sep 2025, 10:54 | 7.81 | 7.81 |
| 13 Aug 2025, 10:07 | 7.62 | 7.62 |
| 28 Jul 2025, 12:41 | 7.58 | 7.58 |
| 27 Jun 2025, 11:40 | 7.67 | 7.67 |
| 22 May 2025, 10:48 | 7.86 | 7.86 |
| 28 Apr 2025, 10:12 | 7.82 | 7.82 |
| 24 Mar 2025, 11:54 | 7.93 | 7.93 |
| 21 Feb 2025, 13:16 | 7.93 | 7.93 |
| 14 Jan 2025, 13:46 | 7.92 | 7.92 |
| 11 Dec 2024, 11:48 | 7.87 | 7.87 |
| 20 Nov 2024, 10:32 | 7.8 | 7.8 |
| 10 Oct 2024, 09:45 | 7.83 | 7.83 |
| 6 Sep 2024, 11:52 | 7.61 | 7.61 |
| 6 Aug 2024, 14:35 | 7.73 | 7.73 |
| 24 Jul 2024, 10:47 | 7.89 | 7.89 |
| 27 Jun 2024, 10:14 | 7.77 | 7.77 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.062 mg/l
Sampled 13 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2026, 10:28 | 0.062 | 0.062 mg/l |
| 24 Feb 2026, 12:44 | 0.063 | 0.063 mg/l |
| 30 Jan 2026, 12:26 | 0.35 | 0.35 mg/l |
| 10 Dec 2025, 09:41 | 0.035 | 0.035 mg/l |
| 18 Nov 2025, 11:03 | 0.19 | 0.19 mg/l |
| 30 Oct 2025, 09:13 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Sep 2025, 10:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Aug 2025, 10:07 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Jul 2025, 12:41 | 0.031 | 0.031 mg/l |
| 27 Jun 2025, 11:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 May 2025, 10:48 | 0.051 | 0.051 mg/l |
| 28 Apr 2025, 10:12 | 0.09 | 0.09 mg/l |
| 24 Mar 2025, 11:54 | 0.069 | 0.069 mg/l |
| 21 Feb 2025, 13:16 | 0.04 | 0.04 mg/l |
| 14 Jan 2025, 13:46 | 0.048 | 0.048 mg/l |
| 11 Dec 2024, 11:48 | 0.049 | 0.049 mg/l |
| 20 Nov 2024, 10:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Oct 2024, 09:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Sep 2024, 11:52 | 0.11 | 0.11 mg/l |
| 6 Aug 2024, 14:35 | 0.053 | 0.053 mg/l |
| 24 Jul 2024, 10:47 | 0.054 | 0.054 mg/l |
| 27 Jun 2024, 10:14 | 0.087 | 0.087 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
7.74 mg/l
Sampled 13 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2026, 10:28 | 7.74 | 7.74 mg/l |
| 24 Feb 2026, 12:44 | 7.66 | 7.66 mg/l |
| 30 Jan 2026, 12:26 | 7.52 | 7.52 mg/l |
| 10 Dec 2025, 09:41 | 8.87 | 8.87 mg/l |
| 18 Nov 2025, 11:03 | 10.9 | 10.9 mg/l |
| 30 Oct 2025, 09:13 | 19.9 | 19.9 mg/l |
| 25 Sep 2025, 10:54 | 27 | 27 mg/l |
| 13 Aug 2025, 10:07 | 32 | 32 mg/l |
| 28 Jul 2025, 12:41 | 29 | 29 mg/l |
| 27 Jun 2025, 11:40 | 24.9 | 24.9 mg/l |
| 22 May 2025, 10:48 | 20.9 | 20.9 mg/l |
| 28 Apr 2025, 10:12 | 14.9 | 14.9 mg/l |
| 24 Mar 2025, 11:54 | 11.9 | 11.9 mg/l |
| 21 Feb 2025, 13:16 | 8.47 | 8.47 mg/l |
| 14 Jan 2025, 13:46 | 8.78 | 8.78 mg/l |
| 11 Dec 2024, 11:48 | 6.67 | 6.67 mg/l |
| 20 Nov 2024, 10:32 | 5.28 | 5.28 mg/l |
| 10 Oct 2024, 09:45 | 5.39 | 5.39 mg/l |
| 6 Sep 2024, 11:52 | 8.98 | 8.98 mg/l |
| 6 Aug 2024, 14:35 | 21.9 | 21.9 mg/l |
| 24 Jul 2024, 10:47 | 19 | 19 mg/l |
| 27 Jun 2024, 10:14 | 19.8 | 19.8 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.47 mg/l
Sampled 13 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2026, 10:28 | 0.47 | 0.47 mg/l |
| 24 Feb 2026, 12:44 | 0.32 | 0.32 mg/l |
| 30 Jan 2026, 12:26 | 0.3 | 0.3 mg/l |
| 10 Dec 2025, 09:41 | 0.34 | 0.34 mg/l |
| 18 Nov 2025, 11:03 | 0.54 | 0.54 mg/l |
| 30 Oct 2025, 09:13 | 1.5 | 1.5 mg/l |
| 25 Sep 2025, 10:54 | 2 | 2 mg/l |
| 13 Aug 2025, 10:07 | 2.3 | 2.3 mg/l |
| 28 Jul 2025, 12:41 | 2.2 | 2.2 mg/l |
| 27 Jun 2025, 11:40 | 2.1 | 2.1 mg/l |
| 22 May 2025, 10:48 | 1.5 | 1.5 mg/l |
| 28 Apr 2025, 10:12 | 1.2 | 1.2 mg/l |
| 24 Mar 2025, 11:54 | 0.57 | 0.57 mg/l |
| 21 Feb 2025, 13:16 | 0.36 | 0.36 mg/l |
| 14 Jan 2025, 13:46 | 0.37 | 0.37 mg/l |
| 11 Dec 2024, 11:48 | 0.37 | 0.37 mg/l |
| 20 Nov 2024, 10:32 | 0.27 | 0.27 mg/l |
| 10 Oct 2024, 09:45 | 0.28 | 0.28 mg/l |
| 6 Sep 2024, 11:52 | 0.93 | 0.93 mg/l |
| 6 Aug 2024, 14:35 | 1.7 | 1.7 mg/l |
| 24 Jul 2024, 10:47 | 0.96 | 0.96 mg/l |
| 27 Jun 2024, 10:14 | 1.2 | 1.2 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
758 µS/cm
Sampled 13 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2026, 10:28 | 758 | 758 µS/cm |
| 24 Feb 2026, 12:44 | 764 | 764 µS/cm |
| 30 Jan 2026, 12:26 | 783 | 783 µS/cm |
| 10 Dec 2025, 09:41 | 799 | 799 µS/cm |
| 18 Nov 2025, 11:03 | 953 | 953 µS/cm |
| 30 Oct 2025, 09:13 | 1010 | 1010 µS/cm |
| 25 Sep 2025, 10:54 | 1009 | 1009 µS/cm |
| 13 Aug 2025, 10:07 | 1007 | 1007 µS/cm |
| 28 Jul 2025, 12:41 | 1005 | 1005 µS/cm |
| 27 Jun 2025, 11:40 | 958 | 958 µS/cm |
| 22 May 2025, 10:48 | 938 | 938 µS/cm |
| 28 Apr 2025, 10:12 | 891 | 891 µS/cm |
| 24 Mar 2025, 11:54 | 869 | 869 µS/cm |
| 21 Feb 2025, 13:16 | 813 | 813 µS/cm |
| 14 Jan 2025, 13:46 | 844 | 844 µS/cm |
| 11 Dec 2024, 11:48 | 762 | 762 µS/cm |
| 20 Nov 2024, 10:32 | 768 | 768 µS/cm |
| 10 Oct 2024, 09:45 | 718 | 718 µS/cm |
| 6 Sep 2024, 11:52 | 700 | 700 µS/cm |
| 6 Aug 2024, 14:35 | 952 | 952 µS/cm |
| 24 Jul 2024, 10:47 | 927 | 927 µS/cm |
| 27 Jun 2024, 10:14 | 933 | 933 µS/cm |
Everything measured here
13 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 13 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 22 | Jun 2024 – Mar 2026 | 83.6% 13 Mar 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 22 | Jun 2024 – Mar 2026 | 9.81 mg/l 13 Mar 2026 |
| Temperature of Water 0076 | River water | 22 | Jun 2024 – Mar 2026 | 8.3 °C 13 Mar 2026 |
| pH 0061 | River water | 22 | Jun 2024 – Mar 2026 | 7.89 13 Mar 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 22 | Jun 2024 – Mar 2026 | 0.062 mg/l 13 Mar 2026 |
| Nitrate as N 0117 | River water | 22 | Jun 2024 – Mar 2026 | 7.74 mg/l 13 Mar 2026 |
| Orthophosphate, reactive as P 0180 | River water | 22 | Jun 2024 – Mar 2026 | 0.47 mg/l 13 Mar 2026 |
| Conductivity at 25 C 0077 | River water | 22 | Jun 2024 – Mar 2026 | 758 µS/cm 13 Mar 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 22 | Jun 2024 – Mar 2026 | 240 mg/l 13 Mar 2026 |
| Ammonia un-ionised as N 0119 | River water | 22 | Jun 2024 – Mar 2026 | 0.00078 mg/l 13 Mar 2026 |
| BOD : 5 Day ATU 0085 | River water | 22 | Jun 2024 – Mar 2026 | below 3 mg/l 13 Mar 2026 |
| Nitrite as N 0118 | River water | 22 | Jun 2024 – Mar 2026 | 0.056 mg/l 13 Mar 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 22 | Jun 2024 – Mar 2026 | 7.8 mg/l 13 Mar 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.