River Fynn Martlesham Bridge
EA name: R.FYNN MARTLESHAM BRIDGE
Environment Agency sampling point AN-FYN070 · 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
- 15 Sep 2026, 10:0016 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 30 since 2 Apr 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 625200, 247300As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Fynn
- River, by the map
- River FynnPlaced on the river its name gives, 36 m from the line.
- Next gauge downstream
- None tracedIts water reaches the sea without passing a gauge.
- Nearest gauge upstream
- Clopton On the River Lark · 11 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (25 samples)
Monitoring (national agency policy) (5 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
89%
Sampled 15 Sep 2026, 16 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 10:00 | 89 | 89% |
| 27 Aug 2026, 08:10 | 85 | 85% |
| 9 Jul 2026, 09:05 | 78.9 | 78.9% |
| 8 Jun 2026, 14:00 | 90.2 | 90.2% |
| 6 May 2026, 13:49 | 89 | 89% |
| 30 Apr 2026, 11:16 | 90.7 | 90.7% |
| 18 Mar 2026, 12:46 | 98.8 | 98.8% |
| 4 Feb 2026, 10:12 | 92.9 | 92.9% |
| 6 Jan 2026, 11:25 | 88.4 | 88.4% |
| 4 Dec 2025, 10:41 | 85.7 | 85.7% |
| 11 Nov 2025, 12:33 | 82.7 | 82.7% |
| 6 Oct 2025, 11:02 | 91.1 | 91.1% |
| 4 Sep 2025, 08:45 | 87 | 87% |
| 21 Aug 2025, 08:47 | 79 | 79% |
| 2 Jul 2025, 08:00 | 69.6 | 69.6% |
| 5 Jun 2025, 11:33 | 85.2 | 85.2% |
| 12 May 2025, 13:41 | 91.1 | 91.1% |
| 7 Apr 2025, 11:57 | 97.1 | 97.1% |
| 13 Mar 2025, 12:58 | 98.2 | 98.2% |
| 10 Feb 2025, 12:27 | 94.1 | 94.1% |
| 23 Jan 2025, 11:48 | 93.3 | 93.3% |
| 5 Dec 2024, 10:05 | 88.8 | 88.8% |
| 6 Nov 2024, 08:41 | 83.4 | 83.4% |
| 2 Oct 2024, 14:44 | 83.9 | 83.9% |
| 2 Sep 2024, 11:42 | 86.1 | 86.1% |
| 5 Aug 2024, 14:11 | 96.7 | 96.7% |
| 2 Jul 2024, 14:54 | 88.1 | 88.1% |
| 11 Jun 2024, 11:52 | 91.2 | 91.2% |
| 1 May 2024, 14:05 | 107.4 | 107.4% |
| 2 Apr 2024, 12:12 | 95 | 95% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.58 mg/l
Sampled 15 Sep 2026, 16 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 10:00 | 8.58 | 8.58 mg/l |
| 27 Aug 2026, 08:10 | 8.35 | 8.35 mg/l |
| 9 Jul 2026, 09:05 | 7.48 | 7.48 mg/l |
| 8 Jun 2026, 14:00 | 9.07 | 9.07 mg/l |
| 6 May 2026, 13:49 | 9.61 | 9.61 mg/l |
| 30 Apr 2026, 11:16 | 9.73 | 9.73 mg/l |
| 18 Mar 2026, 12:46 | 11 | 11 mg/l |
| 4 Feb 2026, 10:12 | 11.5 | 11.5 mg/l |
| 6 Jan 2026, 11:25 | 12.6 | 12.6 mg/l |
| 4 Dec 2025, 10:41 | 10.4 | 10.4 mg/l |
| 11 Nov 2025, 12:33 | 9.01 | 9.01 mg/l |
| 6 Oct 2025, 11:02 | 9.7 | 9.7 mg/l |
| 4 Sep 2025, 08:45 | 8.65 | 8.65 mg/l |
| 21 Aug 2025, 08:47 | 7.97 | 7.97 mg/l |
| 2 Jul 2025, 08:00 | 6.51 | 6.51 mg/l |
| 5 Jun 2025, 11:33 | 8.81 | 8.81 mg/l |
| 12 May 2025, 13:41 | 9.22 | 9.22 mg/l |
| 7 Apr 2025, 11:57 | 11.1 | 11.1 mg/l |
| 13 Mar 2025, 12:58 | 11.8 | 11.8 mg/l |
| 10 Feb 2025, 12:27 | 12 | 12 mg/l |
| 23 Jan 2025, 11:48 | 11.7 | 11.7 mg/l |
| 5 Dec 2024, 10:05 | 10.4 | 10.4 mg/l |
| 6 Nov 2024, 08:41 | 9.21 | 9.21 mg/l |
| 2 Oct 2024, 14:44 | 8.74 | 8.74 mg/l |
| 2 Sep 2024, 11:42 | 8.28 | 8.28 mg/l |
| 5 Aug 2024, 14:11 | 9.05 | 9.05 mg/l |
| 2 Jul 2024, 14:54 | 8.91 | 8.91 mg/l |
| 11 Jun 2024, 11:52 | 9.71 | 9.71 mg/l |
| 1 May 2024, 14:05 | 10.9 | 10.9 mg/l |
| 2 Apr 2024, 12:12 | 10.6 | 10.6 mg/l |
Water temperature
code 0076 · °C
17 °C
Sampled 15 Sep 2026, 16 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 10:00 | 17 | 17 °C |
| 27 Aug 2026, 08:10 | 16.1 | 16.1 °C |
| 9 Jul 2026, 09:05 | 17.8 | 17.8 °C |
| 8 Jun 2026, 14:00 | 15 | 15 °C |
| 6 May 2026, 13:49 | 11.8 | 11.8 °C |
| 30 Apr 2026, 11:16 | 12.1 | 12.1 °C |
| 18 Mar 2026, 12:46 | 10.6 | 10.6 °C |
| 4 Feb 2026, 10:12 | 6.1 | 6.1 °C |
| 6 Jan 2026, 11:25 | 0.7 | 0.7 °C |
| 4 Dec 2025, 10:41 | 7.1 | 7.1 °C |
| 11 Nov 2025, 12:33 | 11.4 | 11.4 °C |
| 6 Oct 2025, 11:02 | 12.4 | 12.4 °C |
| 4 Sep 2025, 08:45 | 15.5 | 15.5 °C |
| 21 Aug 2025, 08:47 | 14.8 | 14.8 °C |
| 2 Jul 2025, 08:00 | 18.4 | 18.4 °C |
| 5 Jun 2025, 11:33 | 13.7 | 13.7 °C |
| 12 May 2025, 13:41 | 14.7 | 14.7 °C |
| 7 Apr 2025, 11:57 | 9.3 | 9.3 °C |
| 13 Mar 2025, 12:58 | 7.2 | 7.2 °C |
| 10 Feb 2025, 12:27 | 5.1 | 5.1 °C |
| 23 Jan 2025, 11:48 | 5.5 | 5.5 °C |
| 5 Dec 2024, 10:05 | 8.5 | 8.5 °C |
| 6 Nov 2024, 08:41 | 10.8 | 10.8 °C |
| 2 Oct 2024, 14:44 | 13.4 | 13.4 °C |
| 2 Sep 2024, 11:42 | 17.1 | 17.1 °C |
| 5 Aug 2024, 14:11 | 18.4 | 18.4 °C |
| 2 Jul 2024, 14:54 | 14.7 | 14.7 °C |
| 11 Jun 2024, 11:52 | 12.4 | 12.4 °C |
| 1 May 2024, 14:05 | 14.5 | 14.5 °C |
| 2 Apr 2024, 12:12 | 10.4 | 10.4 °C |
pH
code 0061
8.04
Sampled 15 Sep 2026, 16 days ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 10:00 | 8.04 | 8.04 |
| 27 Aug 2026, 08:10 | 8.04 | 8.04 |
| 9 Jul 2026, 09:05 | 7.96 | 7.96 |
| 8 Jun 2026, 14:00 | 8.3 | 8.3 |
| 6 May 2026, 13:49 | 7.92 | 7.92 |
| 30 Apr 2026, 11:16 | 7.83 | 7.83 |
| 18 Mar 2026, 12:46 | 8.02 | 8.02 |
| 4 Feb 2026, 10:12 | 8 | 8 |
| 6 Jan 2026, 11:25 | 8.05 | 8.05 |
| 4 Dec 2025, 10:41 | 8.04 | 8.04 |
| 11 Nov 2025, 12:33 | 7.69 | 7.69 |
| 6 Oct 2025, 11:02 | 7.94 | 7.94 |
| 4 Sep 2025, 08:45 | 7.86 | 7.86 |
| 21 Aug 2025, 08:47 | 7.96 | 7.96 |
| 7 Apr 2025, 11:57 | 8.02 | 8.02 |
| 13 Mar 2025, 12:58 | 8.37 | 8.37 |
| 10 Feb 2025, 12:27 | 8.07 | 8.07 |
| 23 Jan 2025, 11:48 | 7.99 | 7.99 |
| 5 Dec 2024, 10:05 | 7.84 | 7.84 |
| 6 Nov 2024, 08:41 | 7.94 | 7.94 |
| 2 Oct 2024, 14:44 | 7.72 | 7.72 |
| 2 Sep 2024, 11:42 | 7.83 | 7.83 |
| 5 Aug 2024, 14:11 | 8.29 | 8.29 |
| 2 Jul 2024, 14:54 | 7.95 | 7.95 |
| 11 Jun 2024, 11:52 | 7.98 | 7.98 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 15 Sep 2026, 16 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 10:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 Aug 2026, 08:10 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Jul 2026, 09:05 | 0.045 | 0.045 mg/l |
| 8 Jun 2026, 14:00 | 0.032 | 0.032 mg/l |
| 6 May 2026, 13:49 | 0.044 | 0.044 mg/l |
| 30 Apr 2026, 11:16 | 0.05 | 0.05 mg/l |
| 18 Mar 2026, 12:46 | 0.1 | 0.1 mg/l |
| 4 Feb 2026, 10:12 | 0.11 | 0.11 mg/l |
| 6 Jan 2026, 11:25 | 0.37 | 0.37 mg/l |
| 4 Dec 2025, 10:41 | 0.036 | 0.036 mg/l |
| 11 Nov 2025, 12:33 | 0.034 | 0.034 mg/l |
| 6 Oct 2025, 11:02 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Sep 2025, 08:45 | 0.04 | 0.04 mg/l |
| 21 Aug 2025, 08:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Jul 2025, 08:00 | 0.045 | 0.045 mg/l |
| 5 Jun 2025, 11:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 May 2025, 13:41 | 0.049 | 0.049 mg/l |
| 13 Mar 2025, 12:58 | 0.21 | 0.21 mg/l |
| 10 Feb 2025, 12:27 | 0.19 | 0.19 mg/l |
| 23 Jan 2025, 11:48 | 0.31 | 0.31 mg/l |
| 5 Dec 2024, 10:05 | 0.08 | 0.08 mg/l |
| 6 Nov 2024, 08:41 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Oct 2024, 14:44 | 0.044 | 0.044 mg/l |
| 2 Sep 2024, 11:42 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Aug 2024, 14:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Jul 2024, 14:54 | 0.044 | 0.044 mg/l |
| 11 Jun 2024, 11:52 | 0.094 | 0.094 mg/l |
| 1 May 2024, 14:05 | 0.073 | 0.073 mg/l |
| 2 Apr 2024, 12:12 | 0.15 | 0.15 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
8.46 mg/l
Sampled 15 Sep 2026, 16 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 10:00 | 8.46 | 8.46 mg/l |
| 27 Aug 2026, 08:10 | 9.46 | 9.46 mg/l |
| 9 Jul 2026, 09:05 | 8.96 | 8.96 mg/l |
| 8 Jun 2026, 14:00 | 7.02 | 7.02 mg/l |
| 6 May 2026, 13:49 | 8.63 | 8.63 mg/l |
| 30 Apr 2026, 11:16 | 8.95 | 8.95 mg/l |
| 18 Mar 2026, 12:46 | 7.25 | 7.25 mg/l |
| 4 Feb 2026, 10:12 | 11 | 11 mg/l |
| 6 Jan 2026, 11:25 | 9.12 | 9.12 mg/l |
| 4 Dec 2025, 10:41 | 13.9 | 13.9 mg/l |
| 11 Nov 2025, 12:33 | 7.44 | 7.44 mg/l |
| 6 Oct 2025, 11:02 | 7.87 | 7.87 mg/l |
| 4 Sep 2025, 08:45 | 7.84 | 7.84 mg/l |
| 21 Aug 2025, 08:47 | 9.48 | 9.48 mg/l |
| 2 Jul 2025, 08:00 | 7.75 | 7.75 mg/l |
| 5 Jun 2025, 11:33 | 9.45 | 9.45 mg/l |
| 12 May 2025, 13:41 | 9.73 | 9.73 mg/l |
| 13 Mar 2025, 12:58 | 9.15 | 9.15 mg/l |
| 10 Feb 2025, 12:27 | 9.14 | 9.14 mg/l |
| 23 Jan 2025, 11:48 | 8.9 | 8.9 mg/l |
| 5 Dec 2024, 10:05 | 10.9 | 10.9 mg/l |
| 6 Nov 2024, 08:41 | 8.74 | 8.74 mg/l |
| 2 Oct 2024, 14:44 | 20.9 | 20.9 mg/l |
| 2 Sep 2024, 11:42 | 8.85 | 8.85 mg/l |
| 5 Aug 2024, 14:11 | 9.05 | 9.05 mg/l |
| 2 Jul 2024, 14:54 | 9.62 | 9.62 mg/l |
| 11 Jun 2024, 11:52 | 8.91 | 8.91 mg/l |
| 1 May 2024, 14:05 | 9.51 | 9.51 mg/l |
| 2 Apr 2024, 12:12 | 8.02 | 8.02 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.27 mg/l
Sampled 15 Sep 2026, 16 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 10:00 | 0.27 | 0.27 mg/l |
| 27 Aug 2026, 08:10 | 0.28 | 0.28 mg/l |
| 9 Jul 2026, 09:05 | 0.29 | 0.29 mg/l |
| 8 Jun 2026, 14:00 | 0.3 | 0.3 mg/l |
| 6 May 2026, 13:49 | 0.18 | 0.18 mg/l |
| 30 Apr 2026, 11:16 | 0.2 | 0.2 mg/l |
| 18 Mar 2026, 12:46 | 0.18 | 0.18 mg/l |
| 4 Feb 2026, 10:12 | 0.15 | 0.15 mg/l |
| 6 Jan 2026, 11:25 | 0.23 | 0.23 mg/l |
| 4 Dec 2025, 10:41 | 0.21 | 0.21 mg/l |
| 11 Nov 2025, 12:33 | 0.41 | 0.41 mg/l |
| 6 Oct 2025, 11:02 | 0.39 | 0.39 mg/l |
| 4 Sep 2025, 08:45 | 0.66 | 0.66 mg/l |
| 21 Aug 2025, 08:47 | 0.52 | 0.52 mg/l |
| 2 Jul 2025, 08:00 | 0.39 | 0.39 mg/l |
| 5 Jun 2025, 11:33 | 0.41 | 0.41 mg/l |
| 12 May 2025, 13:41 | 0.32 | 0.32 mg/l |
| 13 Mar 2025, 12:58 | 0.18 | 0.18 mg/l |
| 10 Feb 2025, 12:27 | 0.21 | 0.21 mg/l |
| 23 Jan 2025, 11:48 | 0.21 | 0.21 mg/l |
| 5 Dec 2024, 10:05 | 0.19 | 0.19 mg/l |
| 6 Nov 2024, 08:41 | 0.26 | 0.26 mg/l |
| 2 Oct 2024, 14:44 | 0.27 | 0.27 mg/l |
| 2 Sep 2024, 11:42 | 0.31 | 0.31 mg/l |
| 5 Aug 2024, 14:11 | 0.34 | 0.34 mg/l |
| 2 Jul 2024, 14:54 | 0.33 | 0.33 mg/l |
| 11 Jun 2024, 11:52 | 0.25 | 0.25 mg/l |
| 1 May 2024, 14:05 | 0.15 | 0.15 mg/l |
| 2 Apr 2024, 12:12 | 0.13 | 0.13 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
941 µS/cm
Sampled 15 Sep 2026, 16 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 10:00 | 941 | 941 µS/cm |
| 27 Aug 2026, 08:10 | 915 | 915 µS/cm |
| 9 Jul 2026, 09:05 | 938 | 938 µS/cm |
| 8 Jun 2026, 14:00 | 1422 | 1422 µS/cm |
| 6 May 2026, 13:49 | 892 | 892 µS/cm |
| 30 Apr 2026, 11:16 | 888 | 888 µS/cm |
| 18 Mar 2026, 12:46 | 879 | 879 µS/cm |
| 4 Feb 2026, 10:12 | 823 | 823 µS/cm |
| 6 Jan 2026, 11:25 | 978 | 978 µS/cm |
| 4 Dec 2025, 10:41 | 936 | 936 µS/cm |
| 11 Nov 2025, 12:33 | 978 | 978 µS/cm |
| 6 Oct 2025, 11:02 | 889 | 889 µS/cm |
| 4 Sep 2025, 08:45 | 890 | 890 µS/cm |
| 21 Aug 2025, 08:47 | 941 | 941 µS/cm |
| 2 Jul 2025, 08:00 | 912 | 912 µS/cm |
| 5 Jun 2025, 11:33 | 918 | 918 µS/cm |
| 12 May 2025, 13:41 | 2876 | 2876 µS/cm |
| 7 Apr 2025, 11:57 | 913 | 913 µS/cm |
| 13 Mar 2025, 12:58 | 1652 | 1652 µS/cm |
| 10 Feb 2025, 12:27 | 939 | 939 µS/cm |
| 23 Jan 2025, 11:48 | 961 | 961 µS/cm |
| 5 Dec 2024, 10:05 | 920 | 920 µS/cm |
| 6 Nov 2024, 08:41 | 933 | 933 µS/cm |
| 2 Oct 2024, 14:44 | 779 | 779 µS/cm |
| 2 Sep 2024, 11:42 | 913 | 913 µS/cm |
| 5 Aug 2024, 14:11 | 885 | 885 µS/cm |
| 2 Jul 2024, 14:54 | 914 | 914 µS/cm |
| 11 Jun 2024, 11:52 | 1069 | 1069 µS/cm |
| 1 May 2024, 14:05 | 874 | 874 µS/cm |
| 2 Apr 2024, 12:12 | 897 | 897 µS/cm |
Everything measured here
18 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 18 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 30 | Apr 2024 – Sep 2026 | 89% 15 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 30 | Apr 2024 – Sep 2026 | 8.58 mg/l 15 Sep 2026 |
| Temperature of Water 0076 | River water | 30 | Apr 2024 – Sep 2026 | 17 °C 15 Sep 2026 |
| pH 0061 | River water | 25 | Jun 2024 – Sep 2026 | 8.04 15 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 29 | Apr 2024 – Sep 2026 | below 0.03 mg/l 15 Sep 2026 |
| Nitrate as N 0117 | River water | 29 | Apr 2024 – Sep 2026 | 8.46 mg/l 15 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 29 | Apr 2024 – Sep 2026 | 0.27 mg/l 15 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 30 | Apr 2024 – Sep 2026 | 941 µS/cm 15 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 24 | Jun 2024 – Sep 2026 | 250 mg/l 15 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 24 | Jun 2024 – Sep 2026 | below 0.00091 mg/l 15 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 22 | Apr 2024 – Mar 2026 | 1.7 mg/l 18 Mar 2026 |
| Chemical Oxygen Demand :- {COD} 0092 | River water | 23 | Apr 2024 – Mar 2026 | 18 mg/l 18 Mar 2026 |
| Chloride 0172 | River water | 23 | Apr 2024 – Mar 2026 | 63 mg/l 18 Mar 2026 |
| Chlorophyll : Acetone Extract 7887 | River water | 22 | Apr 2024 – Mar 2026 | 4.4 µg/l 18 Mar 2026 |
| Nitrite as N 0118 | River water | 29 | Apr 2024 – Sep 2026 | 0.045 mg/l 15 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 29 | Apr 2024 – Sep 2026 | 8.5 mg/l 15 Sep 2026 |
| Silica, reactive as SiO2 0182 | River water | 23 | Apr 2024 – Mar 2026 | 8.9 mg/l 18 Mar 2026 |
| Solids, Suspended at 105 C 0135 | River water | 23 | Apr 2024 – Mar 2026 | 11 mg/l 18 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.