Stowlangtoft Stream at Walsham-le-Willows
EA name: STOWLANGTOFT STM AT WALSHAM-LE-WILLOWS (also listed as “STOWLANGTOFT STREAM AT BELOW WALSHAM-LE-WILLOWS”)
Environment Agency sampling point AN-WRPNTS41 · 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
- 17 Sep 2026, 13:2721 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 13 since 6 Aug 2025 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy) · results completed 19 Sep 2026
- Where
- National Grid 599730, 271017As published, to the nearest 1 m. Open in a map
- River, by its own name
- Stowlangtoft Stream
- River, by the map
- An unnamed streamPlaced by position alone (the only river line close by), 1 m from the line.
- Next gauge downstream
- Abbey Heath On the River Little Ouse · 37 km along the river
- Why it was sampled
- Monitoring (national agency policy) (13 samples)
Results here were completed a median of 2 days after the sample was taken (2 to 4 days, 12 samples). 4 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
31.6%
Sampled 26 May 2026, 4 months ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 11:33 | 31.6 | 31.6% |
| 23 Apr 2026, 11:05 | 92.5 | 92.5% |
| 5 Mar 2026, 11:44 | 107.3 | 107.3% |
| 9 Jan 2026, 12:54 | 95.2 | 95.2% |
| 1 Dec 2025, 13:30 | 84.6 | 84.6% |
| 12 Nov 2025, 09:43 | 36.5 | 36.5% |
| 7 Oct 2025, 10:47 | 42.3 | 42.3% |
| 5 Sep 2025, 13:27 | 71.3 | 71.3% |
| 6 Aug 2025, 13:33 | 68.8 | 68.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
3.12 mg/l
Sampled 26 May 2026, 4 months ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 11:33 | 3.12 | 3.12 mg/l |
| 23 Apr 2026, 11:05 | 10.6 | 10.6 mg/l |
| 5 Mar 2026, 11:44 | 12.8 | 12.8 mg/l |
| 9 Jan 2026, 12:54 | 12.6 | 12.6 mg/l |
| 1 Dec 2025, 13:30 | 10.1 | 10.1 mg/l |
| 12 Nov 2025, 09:43 | 3.93 | 3.93 mg/l |
| 7 Oct 2025, 10:47 | 4.51 | 4.51 mg/l |
| 5 Sep 2025, 13:27 | 7.08 | 7.08 mg/l |
| 6 Aug 2025, 13:33 | 6.89 | 6.89 mg/l |
Water temperature
code 0076 · °C
15.8 °C
Sampled 26 May 2026, 4 months ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 11:33 | 15.8 | 15.8 °C |
| 23 Apr 2026, 11:05 | 9.2 | 9.2 °C |
| 5 Mar 2026, 11:44 | 7.8 | 7.8 °C |
| 9 Jan 2026, 12:54 | 3.7 | 3.7 °C |
| 1 Dec 2025, 13:30 | 7.6 | 7.6 °C |
| 12 Nov 2025, 09:43 | 11.9 | 11.9 °C |
| 7 Oct 2025, 10:47 | 12.4 | 12.4 °C |
| 5 Sep 2025, 13:27 | 15.6 | 15.6 °C |
| 6 Aug 2025, 13:33 | 15.2 | 15.2 °C |
pH
code 0061
7.48
Sampled 26 May 2026, 4 months ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 11:33 | 7.48 | 7.48 |
| 23 Apr 2026, 11:05 | 7.5 | 7.5 |
| 5 Mar 2026, 11:44 | 8.35 | 8.35 |
| 9 Jan 2026, 12:54 | 8.03 | 8.03 |
| 1 Dec 2025, 13:30 | 8.02 | 8.02 |
| 12 Nov 2025, 09:43 | 7.73 | 7.73 |
| 7 Oct 2025, 10:47 | 7.51 | 7.51 |
| 5 Sep 2025, 13:27 | 7.93 | 7.93 |
| 6 Aug 2025, 13:33 | 8.05 | 8.05 |
Conductivity
at 25 °C · code 0077 · µS/cm
908 µS/cm
Sampled 26 May 2026, 4 months ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 11:33 | 908 | 908 µS/cm |
| 23 Apr 2026, 11:05 | 811 | 811 µS/cm |
| 5 Mar 2026, 11:44 | 840 | 840 µS/cm |
| 9 Jan 2026, 12:54 | 676 | 676 µS/cm |
| 1 Dec 2025, 13:30 | 813 | 813 µS/cm |
| 12 Nov 2025, 09:43 | 603 | 603 µS/cm |
| 7 Oct 2025, 10:47 | 457 | 457 µS/cm |
| 5 Sep 2025, 13:27 | 446 | 446 µS/cm |
| 6 Aug 2025, 13:33 | 581 | 581 µS/cm |
Everything measured here
8 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 8 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 9 | Aug 2025 – May 2026 | 31.6% 26 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 9 | Aug 2025 – May 2026 | 3.12 mg/l 26 May 2026 |
| Temperature of Water 0076 | River water | 9 | Aug 2025 – May 2026 | 15.8 °C 26 May 2026 |
| pH 0061 | River water | 9 | Aug 2025 – May 2026 | 7.48 26 May 2026 |
| Conductivity at 25 C 0077 | River water | 9 | Aug 2025 – May 2026 | 908 µS/cm 26 May 2026 |
| Flow Type 2896 | River water | 13 | Aug 2025 – Sep 2026 | Isolated Pools 17 Sep 2026 |
| No flow /No sample 7668 | River water | 4 | Jun 2026 – Sep 2026 | No flow/discharge at sampling point 17 Sep 2026 |
| Photo Taken: Yes/No (1/0) 3257 | River water | 10 | Aug 2025 – Jun 2026 | Yes 23 Jun 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.