River Stour Flatford Mill Footbridge
EA name: R.STOUR FLATFORD MILL FOOTBRIDGE
Environment Agency sampling point AN-ST0120 · 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
- 9 Sep 2026, 12:5722 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 27 since 27 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 607543, 233348As published, to the nearest 1 m. Open in a map
- River, by its own name
- Stour
- River, by the map
- River StourPlaced on the river its name gives, 20 m from the line.
- Next gauge downstream
- None tracedIts water reaches the sea without passing a gauge.
- Nearest gauge upstream
- Langham On the River Stour · 8.2 km along the riverPolstead On the River Box · 14 km along the riverHadleigh On the River Brett · 18 km along the river
- Why it was sampled
- Monitoring (national agency policy) (23 samples)
Environmental monitoring statutory (EU directives) (2 samples)
Planned investigation (local monitoring) (2 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
96.3%
Sampled 4 Mar 2026, 7 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2026, 13:42 | 96.3 | 96.3% |
| 3 Dec 2025, 11:33 | 89.2 | 89.2% |
| 10 Sep 2025, 11:15 | 96.7 | 96.7% |
| 10 Jun 2025, 14:00 | 95.5 | 95.5% |
| 3 Mar 2025, 13:51 | 107.1 | 107.1% |
| 14 Feb 2025, 10:55 | 99.4 | 99.4% |
| 28 Jan 2025, 12:28 | 101.1 | 101.1% |
| 11 Dec 2024, 13:01 | 86.2 | 86.2% |
| 27 Nov 2024, 14:08 | 94.3 | 94.3% |
| 14 Oct 2024, 14:12 | 95.8 | 95.8% |
| 24 Sep 2024, 12:50 | 74.7 | 74.7% |
| 23 Aug 2024, 11:17 | 87.8 | 87.8% |
| 30 Jul 2024, 11:25 | 135.7 | 135.7% |
| 24 Jun 2024, 15:41 | 110.2 | 110.2% |
| 13 May 2024, 11:04 | 98.7 | 98.7% |
| 19 Apr 2024, 09:03 | 108.4 | 108.4% |
| 18 Mar 2024, 15:02 | 96.8 | 96.8% |
| 20 Feb 2024, 11:20 | 77.3 | 77.3% |
| 31 Jan 2024, 13:32 | 98.4 | 98.4% |
| 17 Jan 2024, 07:56 | 97.4 | 97.4% |
| 28 Dec 2023, 14:12 | 96.4 | 96.4% |
| 13 Dec 2023, 10:18 | 84.5 | 84.5% |
| 27 Nov 2023, 11:57 | 96.5 | 96.5% |
| 27 Oct 2023, 12:38 | 81.8 | 81.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11 mg/l
Sampled 4 Mar 2026, 7 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2026, 13:42 | 11 | 11 mg/l |
| 3 Dec 2025, 11:33 | 10.8 | 10.8 mg/l |
| 10 Sep 2025, 11:15 | 9.11 | 9.11 mg/l |
| 10 Jun 2025, 14:00 | 8.82 | 8.82 mg/l |
| 3 Mar 2025, 13:51 | 13.1 | 13.1 mg/l |
| 14 Feb 2025, 10:55 | 12.8 | 12.8 mg/l |
| 28 Jan 2025, 12:28 | 12.4 | 12.4 mg/l |
| 11 Dec 2024, 13:01 | 10.6 | 10.6 mg/l |
| 27 Nov 2024, 14:08 | 11.3 | 11.3 mg/l |
| 14 Oct 2024, 14:12 | 10.5 | 10.5 mg/l |
| 24 Sep 2024, 12:50 | 7.17 | 7.17 mg/l |
| 23 Aug 2024, 11:17 | 8.19 | 8.19 mg/l |
| 30 Jul 2024, 11:25 | 12 | 12 mg/l |
| 24 Jun 2024, 15:41 | 9.65 | 9.65 mg/l |
| 13 May 2024, 11:04 | 9.45 | 9.45 mg/l |
| 19 Apr 2024, 09:03 | 12.1 | 12.1 mg/l |
| 18 Mar 2024, 15:02 | 10.5 | 10.5 mg/l |
| 20 Feb 2024, 11:20 | 9.1 | 9.1 mg/l |
| 31 Jan 2024, 13:32 | 11.9 | 11.9 mg/l |
| 17 Jan 2024, 07:56 | 13.6 | 13.6 mg/l |
| 28 Dec 2023, 14:12 | 11.1 | 11.1 mg/l |
| 13 Dec 2023, 10:18 | 10.1 | 10.1 mg/l |
| 27 Nov 2023, 11:57 | 11.8 | 11.8 mg/l |
| 27 Oct 2023, 12:38 | 9.02 | 9.02 mg/l |
Water temperature
code 0076 · °C
9.4 °C
Sampled 4 Mar 2026, 7 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2026, 13:42 | 9.4 | 9.4 °C |
| 3 Dec 2025, 11:33 | 7 | 7 °C |
| 10 Sep 2025, 11:15 | 18.1 | 18.1 °C |
| 10 Jun 2025, 14:00 | 19.1 | 19.1 °C |
| 3 Mar 2025, 13:51 | 6.7 | 6.7 °C |
| 14 Feb 2025, 10:55 | 4.5 | 4.5 °C |
| 28 Jan 2025, 12:28 | 6.5 | 6.5 °C |
| 11 Dec 2024, 13:01 | 6.6 | 6.6 °C |
| 27 Nov 2024, 14:08 | 7.4 | 7.4 °C |
| 14 Oct 2024, 14:12 | 11.3 | 11.3 °C |
| 24 Sep 2024, 12:50 | 17.2 | 17.2 °C |
| 23 Aug 2024, 11:17 | 18.6 | 18.6 °C |
| 30 Jul 2024, 11:25 | 21.5 | 21.5 °C |
| 24 Jun 2024, 15:41 | 21.8 | 21.8 °C |
| 13 May 2024, 11:04 | 17.3 | 17.3 °C |
| 19 Apr 2024, 09:03 | 10.3 | 10.3 °C |
| 18 Mar 2024, 15:02 | 11.7 | 11.7 °C |
| 20 Feb 2024, 11:20 | 8.2 | 8.2 °C |
| 31 Jan 2024, 13:32 | 7 | 7 °C |
| 17 Jan 2024, 07:56 | 1.6 | 1.6 °C |
| 28 Dec 2023, 14:12 | 9.2 | 9.2 °C |
| 13 Dec 2023, 10:18 | 7.7 | 7.7 °C |
| 27 Nov 2023, 11:57 | 6.8 | 6.8 °C |
| 27 Oct 2023, 12:38 | 10.9 | 10.9 °C |
pH
code 0061
7.86
Sampled 9 Sep 2026, 22 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2026, 12:57 | 7.86 | 7.86 |
| 16 Jun 2026, 13:18 | 7.99 | 7.99 |
| 4 Mar 2026, 13:42 | 8.17 | 8.17 |
| 3 Dec 2025, 11:33 | 7.95 | 7.95 |
| 10 Sep 2025, 11:15 | 8.06 | 8.06 |
| 10 Jun 2025, 14:00 | 7.93 | 7.93 |
| 3 Mar 2025, 13:51 | 8.35 | 8.35 |
| 14 Feb 2025, 10:55 | 8.17 | 8.17 |
| 28 Jan 2025, 12:28 | 8.25 | 8.25 |
| 11 Dec 2024, 13:01 | 7.94 | 7.94 |
| 27 Nov 2024, 14:08 | 8.03 | 8.03 |
| 14 Oct 2024, 14:12 | 8.17 | 8.17 |
| 24 Sep 2024, 12:50 | 7.89 | 7.89 |
| 23 Aug 2024, 11:17 | 7.93 | 7.93 |
| 30 Jul 2024, 11:25 | 8.53 | 8.53 |
| 24 Jun 2024, 15:41 | 8.09 | 8.09 |
| 13 May 2024, 11:04 | 8.32 | 8.32 |
| 19 Apr 2024, 09:03 | 8.3 | 8.3 |
| 18 Mar 2024, 15:02 | 8.12 | 8.12 |
| 20 Feb 2024, 11:20 | 7.87 | 7.87 |
| 31 Jan 2024, 13:32 | 8.13 | 8.13 |
| 17 Jan 2024, 07:56 | 8.2 | 8.2 |
| 28 Dec 2023, 14:12 | 8.17 | 8.17 |
| 13 Dec 2023, 10:18 | 8.01 | 8.01 |
| 27 Nov 2023, 11:57 | 8.07 | 8.07 |
| 27 Oct 2023, 12:38 | 7.78 | 7.78 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 3 Mar 2025, 19 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Mar 2025, 13:51 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Feb 2025, 10:55 | 0.047 | 0.047 mg/l |
| 28 Jan 2025, 12:28 | 0.048 | 0.048 mg/l |
| 11 Dec 2024, 13:01 | 0.035 | 0.035 mg/l |
| 27 Nov 2024, 14:08 | 0.057 | 0.057 mg/l |
| 14 Oct 2024, 14:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Sep 2024, 12:50 | 0.091 | 0.091 mg/l |
| 23 Aug 2024, 11:17 | 0.045 | 0.045 mg/l |
| 30 Jul 2024, 11:25 | 0.033 | 0.033 mg/l |
| 24 Jun 2024, 15:41 | 0.041 | 0.041 mg/l |
| 13 May 2024, 11:04 | 0.054 | 0.054 mg/l |
| 19 Apr 2024, 09:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Mar 2024, 15:02 | 0.043 | 0.043 mg/l |
| 20 Feb 2024, 11:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 31 Jan 2024, 13:32 | 0.067 | 0.067 mg/l |
| 17 Jan 2024, 07:56 | 0.1 | 0.1 mg/l |
| 28 Dec 2023, 14:12 | 0.056 | 0.056 mg/l |
| 13 Dec 2023, 10:18 | 0.034 | 0.034 mg/l |
| 27 Nov 2023, 11:57 | 0.058 | 0.058 mg/l |
| 27 Oct 2023, 12:38 | 0.058 | 0.058 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
9.58 mg/l
Sampled 3 Mar 2025, 19 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Mar 2025, 13:51 | 9.58 | 9.58 mg/l |
| 14 Feb 2025, 10:55 | 9.76 | 9.76 mg/l |
| 28 Jan 2025, 12:28 | 8.65 | 8.65 mg/l |
| 11 Dec 2024, 13:01 | 12 | 12 mg/l |
| 27 Nov 2024, 14:08 | 7.77 | 7.77 mg/l |
| 14 Oct 2024, 14:12 | 7.17 | 7.17 mg/l |
| 24 Sep 2024, 12:50 | 4.82 | 4.82 mg/l |
| 23 Aug 2024, 11:17 | 2.84 | 2.84 mg/l |
| 30 Jul 2024, 11:25 | 3.93 | 3.93 mg/l |
| 24 Jun 2024, 15:41 | 4.75 | 4.75 mg/l |
| 13 May 2024, 11:04 | 5.96 | 5.96 mg/l |
| 19 Apr 2024, 09:03 | 5.18 | 5.18 mg/l |
| 18 Mar 2024, 15:02 | 5.97 | 5.97 mg/l |
| 20 Feb 2024, 11:20 | 4.98 | 4.98 mg/l |
| 31 Jan 2024, 13:32 | 6.95 | 6.95 mg/l |
| 17 Jan 2024, 07:56 | 6.96 | 6.96 mg/l |
| 28 Dec 2023, 14:12 | 7.16 | 7.16 mg/l |
| 13 Dec 2023, 10:18 | 7.46 | 7.46 mg/l |
| 27 Nov 2023, 11:57 | 7.37 | 7.37 mg/l |
| 27 Oct 2023, 12:38 | 7.01 | 7.01 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.044 mg/l
Sampled 3 Mar 2025, 19 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Mar 2025, 13:51 | 0.044 | 0.044 mg/l |
| 14 Feb 2025, 10:55 | 0.076 | 0.076 mg/l |
| 28 Jan 2025, 12:28 | 0.09 | 0.09 mg/l |
| 11 Dec 2024, 13:01 | 0.15 | 0.15 mg/l |
| 27 Nov 2024, 14:08 | 0.15 | 0.15 mg/l |
| 14 Oct 2024, 14:12 | 0.14 | 0.14 mg/l |
| 24 Sep 2024, 12:50 | 0.11 | 0.11 mg/l |
| 23 Aug 2024, 11:17 | 0.09 | 0.09 mg/l |
| 30 Jul 2024, 11:25 | 0.094 | 0.094 mg/l |
| 24 Jun 2024, 15:41 | 0.077 | 0.077 mg/l |
| 13 May 2024, 11:04 | 0.067 | 0.067 mg/l |
| 19 Apr 2024, 09:03 | 0.011 | 0.011 mg/l |
| 18 Mar 2024, 15:02 | 0.07 | 0.07 mg/l |
| 20 Feb 2024, 11:20 | 0.08 | 0.08 mg/l |
| 31 Jan 2024, 13:32 | 0.11 | 0.11 mg/l |
| 17 Jan 2024, 07:56 | 0.097 | 0.097 mg/l |
| 28 Dec 2023, 14:12 | 0.11 | 0.11 mg/l |
| 13 Dec 2023, 10:18 | 0.099 | 0.099 mg/l |
| 27 Nov 2023, 11:57 | 0.11 | 0.11 mg/l |
| 27 Oct 2023, 12:38 | 0.15 | 0.15 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
797 µS/cm
Sampled 4 Mar 2026, 7 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2026, 13:42 | 797 | 797 µS/cm |
| 3 Dec 2025, 11:33 | 859 | 859 µS/cm |
| 10 Sep 2025, 11:15 | 1000 | 1000 µS/cm |
| 10 Jun 2025, 14:00 | 829 | 829 µS/cm |
| 3 Mar 2025, 13:51 | 768 | 768 µS/cm |
| 14 Feb 2025, 10:55 | 843 | 843 µS/cm |
| 28 Jan 2025, 12:28 | 854 | 854 µS/cm |
| 11 Dec 2024, 13:01 | 653 | 653 µS/cm |
| 27 Nov 2024, 14:08 | 805 | 805 µS/cm |
| 14 Oct 2024, 14:12 | 795 | 795 µS/cm |
| 24 Sep 2024, 12:50 | 885 | 885 µS/cm |
| 23 Aug 2024, 11:17 | 845 | 845 µS/cm |
| 30 Jul 2024, 11:25 | 783 | 783 µS/cm |
| 24 Jun 2024, 15:41 | 838 | 838 µS/cm |
| 13 May 2024, 11:04 | 2054 | 2054 µS/cm |
| 19 Apr 2024, 09:03 | 778 | 778 µS/cm |
| 18 Mar 2024, 15:02 | 751 | 751 µS/cm |
| 20 Feb 2024, 11:20 | 562 | 562 µS/cm |
| 31 Jan 2024, 13:32 | 829 | 829 µS/cm |
| 17 Jan 2024, 07:56 | 799 | 799 µS/cm |
| 28 Dec 2023, 14:12 | 787 | 787 µS/cm |
| 13 Dec 2023, 10:18 | 678 | 678 µS/cm |
| 27 Nov 2023, 11:57 | 810 | 810 µS/cm |
| 27 Oct 2023, 12:38 | 715 | 715 µS/cm |
E. coli
confirmed, membrane filtration · code 2348 · per 100 ml
470 per 100 ml
Sampled 13 May 2024, 2.4 years ago · 2 results banked
Every result (2)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 May 2024, 11:04 | 470 | 470 per 100 ml |
| 2 Apr 2024, 14:54 | 240 | 240 per 100 ml |
Everything measured here
20 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 20 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 24 | Oct 2023 – Mar 2026 | 96.3% 4 Mar 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 24 | Oct 2023 – Mar 2026 | 11 mg/l 4 Mar 2026 |
| Temperature of Water 0076 | River water | 24 | Oct 2023 – Mar 2026 | 9.4 °C 4 Mar 2026 |
| pH 0061 | River water | 26 | Oct 2023 – Sep 2026 | 7.86 9 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 20 | Oct 2023 – Mar 2025 | below 0.03 mg/l 3 Mar 2025 |
| Nitrate as N 0117 | River water | 20 | Oct 2023 – Mar 2025 | 9.58 mg/l 3 Mar 2025 |
| Orthophosphate, reactive as P 0180 | River water | 20 | Oct 2023 – Mar 2025 | 0.044 mg/l 3 Mar 2025 |
| Conductivity at 25 C 0077 | River water | 24 | Oct 2023 – Mar 2026 | 797 µS/cm 4 Mar 2026 |
| Escherichia coli : Confirmed : MF 2348 | River water | 2 | Apr 2024 – May 2024 | 470 per 100 ml 13 May 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 20 | Oct 2023 – Mar 2025 | 260 mg/l 3 Mar 2025 |
| Ammonia un-ionised as N 0119 | River water | 20 | Oct 2023 – Mar 2025 | below 0.00043 mg/l 3 Mar 2025 |
| BOD : 5 Day ATU 0085 | River water | 13 | Dec 2023 – Jan 2025 | 1.7 mg/l 28 Jan 2025 |
| Calcium, Dissolved 0239 | River water | 12 | Dec 2023 – Sep 2026 | 110 mg/l 9 Sep 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 12 | Dec 2023 – Sep 2026 | 4.2 mg/l 9 Sep 2026 |
| Enterococci: Intestinal: Confirmed: MF 3723 | River water | 2 | Apr 2024 – May 2024 | 54 colony forming units / 100ml 13 May 2024 |
| Enterococci: Intestinal: Presumptive: MF 3722 | River water | 2 | Apr 2024 – May 2024 | 54 colony forming units / 100ml 13 May 2024 |
| Iron, Dissolved 6460 | River water | 12 | Dec 2023 – Sep 2026 | below 30 µg/l 9 Sep 2026 |
| Magnesium, Dissolved 0235 | River water | 12 | Dec 2023 – Sep 2026 | 14 mg/l 9 Sep 2026 |
| Nitrite as N 0118 | River water | 20 | Oct 2023 – Mar 2025 | 0.022 mg/l 3 Mar 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 20 | Oct 2023 – Mar 2025 | 9.6 mg/l 3 Mar 2025 |
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.