Foulsham Stream Twyford Bridge (River Wensum)
EA name: FOULSHAM STR.TWYFORD BRIDGE (R.WENSUM)
Environment Agency sampling point AN-WEN090 · 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
- 16 Sep 2026, 12:2915 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 23 since 17 Oct 2023 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 601700, 324500As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Its name does not give one
- River, by the map
- Not placedGrid reference only to 100 m and no line carries the name it gives, so position alone cannot choose. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Environmental monitoring statutory (EU directives) (23 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
92%
Sampled 16 Sep 2026, 15 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Sep 2026, 12:29 | 92 | 92% |
| 20 Aug 2026, 10:22 | 86.1 | 86.1% |
| 3 Jul 2026, 09:45 | 86.1 | 86.1% |
| 10 Jun 2026, 09:24 | 94.7 | 94.7% |
| 22 May 2026, 15:02 | 101.6 | 101.6% |
| 29 Apr 2026, 10:05 | 103.5 | 103.5% |
| 4 Mar 2025, 11:50 | 98.7 | 98.7% |
| 5 Feb 2025, 10:48 | 97.2 | 97.2% |
| 7 Jan 2025, 10:42 | 96.9 | 96.9% |
| 3 Dec 2024, 13:01 | 94.8 | 94.8% |
| 1 Nov 2024, 11:11 | 90.8 | 90.8% |
| 3 Oct 2024, 10:48 | 94.9 | 94.9% |
| 9 Sep 2024, 09:59 | 86.4 | 86.4% |
| 1 Aug 2024, 12:40 | 97.7 | 97.7% |
| 1 Jul 2024, 12:01 | 94.4 | 94.4% |
| 3 Jun 2024, 15:49 | 94 | 94% |
| 1 Mar 2024, 10:58 | 98.2 | 98.2% |
| 2 Feb 2024, 09:30 | 97.6 | 97.6% |
| 10 Jan 2024, 12:04 | 95.5 | 95.5% |
| 12 Dec 2023, 09:12 | 91 | 91% |
| 28 Nov 2023, 12:25 | 93.6 | 93.6% |
| 6 Nov 2023, 12:02 | 94.3 | 94.3% |
| 17 Oct 2023, 10:05 | 89.5 | 89.5% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.21 mg/l
Sampled 16 Sep 2026, 15 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Sep 2026, 12:29 | 9.21 | 9.21 mg/l |
| 20 Aug 2026, 10:22 | 8.57 | 8.57 mg/l |
| 3 Jul 2026, 09:45 | 8.6 | 8.6 mg/l |
| 10 Jun 2026, 09:24 | 10.1 | 10.1 mg/l |
| 22 May 2026, 15:02 | 9.31 | 9.31 mg/l |
| 29 Apr 2026, 10:05 | 11.6 | 11.6 mg/l |
| 4 Mar 2025, 11:50 | 12.4 | 12.4 mg/l |
| 5 Feb 2025, 10:48 | 12.5 | 12.5 mg/l |
| 7 Jan 2025, 10:42 | 12.7 | 12.7 mg/l |
| 3 Dec 2024, 13:01 | 11.3 | 11.3 mg/l |
| 1 Nov 2024, 11:11 | 9.97 | 9.97 mg/l |
| 3 Oct 2024, 10:48 | 10.4 | 10.4 mg/l |
| 9 Sep 2024, 09:59 | 8.65 | 8.65 mg/l |
| 1 Aug 2024, 12:40 | 8.97 | 8.97 mg/l |
| 1 Jul 2024, 12:01 | 9.31 | 9.31 mg/l |
| 3 Jun 2024, 15:49 | 9.47 | 9.47 mg/l |
| 1 Mar 2024, 10:58 | 12 | 12 mg/l |
| 2 Feb 2024, 09:30 | 12.1 | 12.1 mg/l |
| 10 Jan 2024, 12:04 | 12.3 | 12.3 mg/l |
| 12 Dec 2023, 09:12 | 10.9 | 10.9 mg/l |
| 28 Nov 2023, 12:25 | 11.2 | 11.2 mg/l |
| 6 Nov 2023, 12:02 | 10.6 | 10.6 mg/l |
| 17 Oct 2023, 10:05 | 10.3 | 10.3 mg/l |
Water temperature
code 0076 · °C
15.2 °C
Sampled 16 Sep 2026, 15 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Sep 2026, 12:29 | 15.2 | 15.2 °C |
| 20 Aug 2026, 10:22 | 15.5 | 15.5 °C |
| 3 Jul 2026, 09:45 | 15.3 | 15.3 °C |
| 10 Jun 2026, 09:24 | 12.3 | 12.3 °C |
| 22 May 2026, 15:02 | 19.5 | 19.5 °C |
| 29 Apr 2026, 10:05 | 10.3 | 10.3 °C |
| 4 Mar 2025, 11:50 | 5.6 | 5.6 °C |
| 5 Feb 2025, 10:48 | 4.8 | 4.8 °C |
| 7 Jan 2025, 10:42 | 4.1 | 4.1 °C |
| 3 Dec 2024, 13:01 | 7.7 | 7.7 °C |
| 1 Nov 2024, 11:11 | 11.1 | 11.1 °C |
| 3 Oct 2024, 10:48 | 11.3 | 11.3 °C |
| 9 Sep 2024, 09:59 | 15.2 | 15.2 °C |
| 1 Aug 2024, 12:40 | 19.4 | 19.4 °C |
| 1 Jul 2024, 12:01 | 15.9 | 15.9 °C |
| 3 Jun 2024, 15:49 | 14.9 | 14.9 °C |
| 1 Mar 2024, 10:58 | 6.6 | 6.6 °C |
| 2 Feb 2024, 09:30 | 6 | 6 °C |
| 10 Jan 2024, 12:04 | 4.6 | 4.6 °C |
| 12 Dec 2023, 09:12 | 7.6 | 7.6 °C |
| 28 Nov 2023, 12:25 | 7.4 | 7.4 °C |
| 6 Nov 2023, 12:02 | 10 | 10 °C |
| 17 Oct 2023, 10:05 | 9.3 | 9.3 °C |
pH
code 0061
8.21
Sampled 16 Sep 2026, 15 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Sep 2026, 12:29 | 8.21 | 8.21 |
| 20 Aug 2026, 10:22 | 8.04 | 8.04 |
| 3 Jul 2026, 09:45 | 8.3 | 8.3 |
| 10 Jun 2026, 09:24 | 8.22 | 8.22 |
| 22 May 2026, 15:02 | 8.25 | 8.25 |
| 29 Apr 2026, 10:05 | 8.36 | 8.36 |
| 4 Mar 2025, 11:50 | 8.25 | 8.25 |
| 5 Feb 2025, 10:48 | 8.36 | 8.36 |
| 7 Jan 2025, 10:42 | 7.97 | 7.97 |
| 3 Dec 2024, 13:01 | 7.99 | 7.99 |
| 1 Nov 2024, 11:11 | 8.07 | 8.07 |
| 3 Oct 2024, 10:48 | 7.91 | 7.91 |
| 9 Sep 2024, 09:59 | 8.45 | 8.45 |
| 1 Aug 2024, 12:40 | 8.18 | 8.18 |
| 1 Jul 2024, 12:01 | 8.4 | 8.4 |
| 3 Jun 2024, 15:49 | 8.25 | 8.25 |
| 1 Mar 2024, 10:58 | 8.18 | 8.18 |
| 2 Feb 2024, 09:30 | 8.22 | 8.22 |
| 10 Jan 2024, 12:04 | 8.27 | 8.27 |
| 12 Dec 2023, 09:12 | 8.08 | 8.08 |
| 28 Nov 2023, 12:25 | 6.92 | 6.92 |
| 6 Nov 2023, 12:02 | 8.25 | 8.25 |
| 17 Oct 2023, 10:05 | 8.11 | 8.11 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 16 Sep 2026, 15 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Sep 2026, 12:29 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Aug 2026, 10:22 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Jul 2026, 09:45 | 0.032 | 0.032 mg/l |
| 10 Jun 2026, 09:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 May 2026, 15:02 | 0.039 | 0.039 mg/l |
| 29 Apr 2026, 10:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Mar 2025, 11:50 | 0.048 | 0.048 mg/l |
| 5 Feb 2025, 10:48 | 0.036 | 0.036 mg/l |
| 7 Jan 2025, 10:42 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Dec 2024, 13:01 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Nov 2024, 11:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Oct 2024, 10:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Sep 2024, 09:59 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Aug 2024, 12:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Jul 2024, 12:01 | 0.056 | 0.056 mg/l |
| 3 Jun 2024, 15:49 | 0.06 | 0.06 mg/l |
| 1 Mar 2024, 10:58 | 0.081 | 0.081 mg/l |
| 2 Feb 2024, 09:30 | 0.044 | 0.044 mg/l |
| 10 Jan 2024, 12:04 | 0.079 | 0.079 mg/l |
| 12 Dec 2023, 09:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Nov 2023, 12:25 | 0.085 | 0.085 mg/l |
| 6 Nov 2023, 12:02 | 0.033 | 0.033 mg/l |
| 17 Oct 2023, 10:05 | 0.072 | 0.072 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
6.68 mg/l
Sampled 16 Sep 2026, 15 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Sep 2026, 12:29 | 6.68 | 6.68 mg/l |
| 20 Aug 2026, 10:22 | 9.67 | 9.67 mg/l |
| 3 Jul 2026, 09:45 | 11 | 11 mg/l |
| 10 Jun 2026, 09:24 | 4.76 | 4.76 mg/l |
| 22 May 2026, 15:02 | 7.07 | 7.07 mg/l |
| 29 Apr 2026, 10:05 | 5.57 | 5.57 mg/l |
| 4 Mar 2025, 11:50 | 5.77 | 5.77 mg/l |
| 5 Feb 2025, 10:48 | 5.68 | 5.68 mg/l |
| 7 Jan 2025, 10:42 | 7.38 | 7.38 mg/l |
| 3 Dec 2024, 13:01 | 8.38 | 8.38 mg/l |
| 1 Nov 2024, 11:11 | 5.69 | 5.69 mg/l |
| 3 Oct 2024, 10:48 | 8.37 | 8.37 mg/l |
| 9 Sep 2024, 09:59 | 6.17 | 6.17 mg/l |
| 1 Aug 2024, 12:40 | 5.77 | 5.77 mg/l |
| 1 Jul 2024, 12:01 | 5.97 | 5.97 mg/l |
| 3 Jun 2024, 15:49 | 4.05 | 4.05 mg/l |
| 1 Mar 2024, 10:58 | 3.68 | 3.68 mg/l |
| 2 Feb 2024, 09:30 | 4.98 | 4.98 mg/l |
| 10 Jan 2024, 12:04 | 4.67 | 4.67 mg/l |
| 12 Dec 2023, 09:12 | 5.17 | 5.17 mg/l |
| 28 Nov 2023, 12:25 | 4.98 | 4.98 mg/l |
| 6 Nov 2023, 12:02 | 6.07 | 6.07 mg/l |
| 17 Oct 2023, 10:05 | 3.78 | 3.78 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.17 mg/l
Sampled 16 Sep 2026, 15 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Sep 2026, 12:29 | 0.17 | 0.17 mg/l |
| 20 Aug 2026, 10:22 | 0.16 | 0.16 mg/l |
| 3 Jul 2026, 09:45 | 0.24 | 0.24 mg/l |
| 10 Jun 2026, 09:24 | 0.15 | 0.15 mg/l |
| 22 May 2026, 15:02 | 0.14 | 0.14 mg/l |
| 29 Apr 2026, 10:05 | 0.072 | 0.072 mg/l |
| 4 Mar 2025, 11:50 | 0.049 | 0.049 mg/l |
| 5 Feb 2025, 10:48 | 0.058 | 0.058 mg/l |
| 7 Jan 2025, 10:42 | 0.06 | 0.06 mg/l |
| 1 Nov 2024, 11:11 | 0.098 | 0.098 mg/l |
| 3 Oct 2024, 10:48 | 0.083 | 0.083 mg/l |
| 9 Sep 2024, 09:59 | 0.13 | 0.13 mg/l |
| 1 Aug 2024, 12:40 | 0.13 | 0.13 mg/l |
| 1 Jul 2024, 12:01 | 0.13 | 0.13 mg/l |
| 3 Jun 2024, 15:49 | 0.081 | 0.081 mg/l |
| 1 Mar 2024, 10:58 | 0.079 | 0.079 mg/l |
| 2 Feb 2024, 09:30 | 0.061 | 0.061 mg/l |
| 10 Jan 2024, 12:04 | 0.082 | 0.082 mg/l |
| 12 Dec 2023, 09:12 | 0.067 | 0.067 mg/l |
| 28 Nov 2023, 12:25 | 0.081 | 0.081 mg/l |
| 6 Nov 2023, 12:02 | 0.06 | 0.06 mg/l |
| 17 Oct 2023, 10:05 | 0.16 | 0.16 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
765 µS/cm
Sampled 16 Sep 2026, 15 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Sep 2026, 12:29 | 765 | 765 µS/cm |
| 20 Aug 2026, 10:22 | 762 | 762 µS/cm |
| 3 Jul 2026, 09:45 | 1028 | 1028 µS/cm |
| 10 Jun 2026, 09:24 | 738 | 738 µS/cm |
| 22 May 2026, 15:02 | 760 | 760 µS/cm |
| 29 Apr 2026, 10:05 | 759 | 759 µS/cm |
| 4 Mar 2025, 11:50 | 749 | 749 µS/cm |
| 5 Feb 2025, 10:48 | 751 | 751 µS/cm |
| 7 Jan 2025, 10:42 | 660 | 660 µS/cm |
| 3 Dec 2024, 13:01 | 696 | 696 µS/cm |
| 1 Nov 2024, 11:11 | 764 | 764 µS/cm |
| 3 Oct 2024, 10:48 | 713 | 713 µS/cm |
| 9 Sep 2024, 09:59 | 785 | 785 µS/cm |
| 1 Aug 2024, 12:40 | 737 | 737 µS/cm |
| 1 Jul 2024, 12:01 | 786 | 786 µS/cm |
| 3 Jun 2024, 15:49 | 782 | 782 µS/cm |
| 1 Mar 2024, 10:58 | 744 | 744 µS/cm |
| 2 Feb 2024, 09:30 | 734 | 734 µS/cm |
| 10 Jan 2024, 12:04 | 678 | 678 µS/cm |
| 12 Dec 2023, 09:12 | 682 | 682 µS/cm |
| 28 Nov 2023, 12:25 | 738 | 738 µS/cm |
| 6 Nov 2023, 12:02 | 705 | 705 µS/cm |
| 17 Oct 2023, 10:05 | 785 | 785 µS/cm |
Everything measured here
21 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 21 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 23 | Oct 2023 – Sep 2026 | 92% 16 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 23 | Oct 2023 – Sep 2026 | 9.21 mg/l 16 Sep 2026 |
| Temperature of Water 0076 | River water | 23 | Oct 2023 – Sep 2026 | 15.2 °C 16 Sep 2026 |
| pH 0061 | River water | 23 | Oct 2023 – Sep 2026 | 8.21 16 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 23 | Oct 2023 – Sep 2026 | below 0.03 mg/l 16 Sep 2026 |
| Nitrate as N 0117 | River water | 23 | Oct 2023 – Sep 2026 | 6.68 mg/l 16 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 22 | Oct 2023 – Sep 2026 | 0.17 mg/l 16 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 23 | Oct 2023 – Sep 2026 | 765 µS/cm 16 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 23 | Oct 2023 – Sep 2026 | 250 mg/l 16 Sep 2026 |
| Alkalinity, Dissolved as CaCO3 7867 | River water | 6 | Apr 2026 – Sep 2026 | 260 mg/l 16 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 23 | Oct 2023 – Sep 2026 | below 0.0008 mg/l 16 Sep 2026 |
| Ammoniacal Nitrogen, Filtered as N 9993 | River water | 6 | Apr 2026 – Sep 2026 | below 0.03 mg/l 16 Sep 2026 |
| Chloride, GF/C Filtered 7190 | River water | 6 | Apr 2026 – Sep 2026 | 49 mg/l 16 Sep 2026 |
| Nitrite as N 0118 | River water | 23 | Oct 2023 – Sep 2026 | 0.019 mg/l 16 Sep 2026 |
| Nitrite, Filtered as N 6485 | River water | 6 | Apr 2026 – Sep 2026 | 0.019 mg/l 16 Sep 2026 |
| Nitrogen, Total as N 9686 | River water | 6 | Apr 2026 – Sep 2026 | 7.1 mg/l 16 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 23 | Oct 2023 – Sep 2026 | 6.7 mg/l 16 Sep 2026 |
| Nitrogen, Total Oxidised, Filtered as N 9943 | River water | 6 | Apr 2026 – Sep 2026 | 6.6 mg/l 16 Sep 2026 |
| Orthophosphate, Filtered as P 9856 | River water | 6 | Apr 2026 – Sep 2026 | 0.17 mg/l 16 Sep 2026 |
| Phosphorus, Total as P 0348 | River water | 6 | Apr 2026 – Sep 2026 | 0.18 mg/l 16 Sep 2026 |
| Silicate, Filtered as SiO2 9857 | River water | 6 | Apr 2026 – Sep 2026 | 15 mg/l 16 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.