River Stiffkey off Sunk Road Little Walsingham
EA name: R.STIFFKEY OFF SUNK RD LT. WALSINGHAM (also listed as “RSN2257 R.STIFFKEY OFF SUNK RD LT. WALSINGHAM”)
Environment Agency sampling point AN-RSN2257 · 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
- 3 Dec 2024, 11:2522 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 8 Oct 2026 and had nothing newer.
- Samples banked
- 10 since 10 Jan 2024 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)
- Where
- National Grid 593508, 336599As published, to the nearest 1 m. Open in a map
- River, by its own name
- Stiffkey
- River, by the map
- River StiffkeyPlaced on the river its name gives, 5 m from the line.
- Next gauge downstream
- Warham On the River Stiffkey · 5.7 km along the river
- Nearest gauge upstream
- Little Walsingham On the River Stiffkey · 0.1 km along the river
- Why it was sampled
- Monitoring (national agency policy) (10 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
91.3%
Sampled 3 Dec 2024, 22 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Dec 2024, 11:25 | 91.3 | 91.3% |
| 15 Nov 2024, 11:25 | 90 | 90% |
| 31 Oct 2024, 10:35 | 86.5 | 86.5% |
| 21 Aug 2024, 12:32 | 96 | 96% |
| 8 Jul 2024, 13:33 | 96.7 | 96.7% |
| 10 Jun 2024, 11:50 | 89.1 | 89.1% |
| 29 Apr 2024, 11:31 | 100 | 100% |
| 27 Mar 2024, 09:27 | 97.1 | 97.1% |
| 16 Feb 2024, 10:34 | 92.4 | 92.4% |
| 10 Jan 2024, 10:14 | 90.3 | 90.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11 mg/l
Sampled 3 Dec 2024, 22 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Dec 2024, 11:25 | 11 | 11 mg/l |
| 15 Nov 2024, 11:25 | 10.4 | 10.4 mg/l |
| 31 Oct 2024, 10:35 | 9.43 | 9.43 mg/l |
| 21 Aug 2024, 12:32 | 9.69 | 9.69 mg/l |
| 8 Jul 2024, 13:33 | 9.66 | 9.66 mg/l |
| 10 Jun 2024, 11:50 | 9.67 | 9.67 mg/l |
| 29 Apr 2024, 11:31 | 11.3 | 11.3 mg/l |
| 27 Mar 2024, 09:27 | 11.3 | 11.3 mg/l |
| 16 Feb 2024, 10:34 | 10.3 | 10.3 mg/l |
| 10 Jan 2024, 10:14 | 12 | 12 mg/l |
Water temperature
code 0076 · °C
7.4 °C
Sampled 3 Dec 2024, 22 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Dec 2024, 11:25 | 7.4 | 7.4 °C |
| 15 Nov 2024, 11:25 | 9.1 | 9.1 °C |
| 31 Oct 2024, 10:35 | 11.4 | 11.4 °C |
| 21 Aug 2024, 12:32 | 14.8 | 14.8 °C |
| 8 Jul 2024, 13:33 | 15.3 | 15.3 °C |
| 10 Jun 2024, 11:50 | 11.6 | 11.6 °C |
| 29 Apr 2024, 11:31 | 10 | 10 °C |
| 27 Mar 2024, 09:27 | 8.8 | 8.8 °C |
| 16 Feb 2024, 10:34 | 10.4 | 10.4 °C |
| 10 Jan 2024, 10:14 | 3.4 | 3.4 °C |
pH
code 0061
8.03
Sampled 3 Dec 2024, 22 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Dec 2024, 11:25 | 8.03 | 8.03 |
| 15 Nov 2024, 11:25 | 8.18 | 8.18 |
| 31 Oct 2024, 10:35 | 8.03 | 8.03 |
| 21 Aug 2024, 12:32 | 8.4 | 8.4 |
| 8 Jul 2024, 13:33 | 8.24 | 8.24 |
| 10 Jun 2024, 11:50 | 8.33 | 8.33 |
| 29 Apr 2024, 11:31 | 8.11 | 8.11 |
| 27 Mar 2024, 09:27 | 7.95 | 7.95 |
| 16 Feb 2024, 10:34 | 8.04 | 8.04 |
| 10 Jan 2024, 10:14 | 8.2 | 8.2 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.037 mg/l
Sampled 3 Dec 2024, 22 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Dec 2024, 11:25 | 0.037 | 0.037 mg/l |
| 15 Nov 2024, 11:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 31 Oct 2024, 10:35 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Aug 2024, 12:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Jul 2024, 13:33 | 0.045 | 0.045 mg/l |
| 10 Jun 2024, 11:50 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 Apr 2024, 11:31 | 0.036 | 0.036 mg/l |
| 27 Mar 2024, 09:27 | 0.032 | 0.032 mg/l |
| 16 Feb 2024, 10:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Jan 2024, 10:14 | 0.034 | 0.034 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
4.56 mg/l
Sampled 3 Dec 2024, 22 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Dec 2024, 11:25 | 4.56 | 4.56 mg/l |
| 15 Nov 2024, 11:25 | 5.67 | 5.67 mg/l |
| 31 Oct 2024, 10:35 | 4.48 | 4.48 mg/l |
| 21 Aug 2024, 12:32 | 5.59 | 5.59 mg/l |
| 8 Jul 2024, 13:33 | 3.47 | 3.47 mg/l |
| 10 Jun 2024, 11:50 | 4.38 | 4.38 mg/l |
| 29 Apr 2024, 11:31 | 3.67 | 3.67 mg/l |
| 27 Mar 2024, 09:27 | 4.57 | 4.57 mg/l |
| 16 Feb 2024, 10:34 | 4.38 | 4.38 mg/l |
| 10 Jan 2024, 10:14 | 5.18 | 5.18 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.082 mg/l
Sampled 3 Dec 2024, 22 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Dec 2024, 11:25 | 0.082 | 0.082 mg/l |
| 15 Nov 2024, 11:25 | 0.1 | 0.1 mg/l |
| 31 Oct 2024, 10:35 | 0.1 | 0.1 mg/l |
| 21 Aug 2024, 12:32 | 0.11 | 0.11 mg/l |
| 8 Jul 2024, 13:33 | 0.11 | 0.11 mg/l |
| 10 Jun 2024, 11:50 | 0.11 | 0.11 mg/l |
| 29 Apr 2024, 11:31 | 0.069 | 0.069 mg/l |
| 27 Mar 2024, 09:27 | 0.073 | 0.073 mg/l |
| 16 Feb 2024, 10:34 | 0.066 | 0.066 mg/l |
| 10 Jan 2024, 10:14 | 0.072 | 0.072 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
731 µS/cm
Sampled 3 Dec 2024, 22 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Dec 2024, 11:25 | 731 | 731 µS/cm |
| 15 Nov 2024, 11:25 | 796 | 796 µS/cm |
| 31 Oct 2024, 10:35 | 776 | 776 µS/cm |
| 21 Aug 2024, 12:32 | 861 | 861 µS/cm |
| 8 Jul 2024, 13:33 | 752 | 752 µS/cm |
| 10 Jun 2024, 11:50 | 1043 | 1043 µS/cm |
| 29 Apr 2024, 11:31 | 687 | 687 µS/cm |
| 27 Mar 2024, 09:27 | 739 | 739 µS/cm |
| 16 Feb 2024, 10:34 | 655 | 655 µS/cm |
| 10 Jan 2024, 10:14 | 705 | 705 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 | 10 | Jan 2024 – Dec 2024 | 91.3% 3 Dec 2024 |
| Oxygen, Dissolved as O2 9924 | River water | 10 | Jan 2024 – Dec 2024 | 11 mg/l 3 Dec 2024 |
| Temperature of Water 0076 | River water | 10 | Jan 2024 – Dec 2024 | 7.4 °C 3 Dec 2024 |
| pH 0061 | River water | 10 | Jan 2024 – Dec 2024 | 8.03 3 Dec 2024 |
| Ammoniacal Nitrogen as N 0111 | River water | 10 | Jan 2024 – Dec 2024 | 0.037 mg/l 3 Dec 2024 |
| Nitrate as N 0117 | River water | 10 | Jan 2024 – Dec 2024 | 4.56 mg/l 3 Dec 2024 |
| Orthophosphate, reactive as P 0180 | River water | 10 | Jan 2024 – Dec 2024 | 0.082 mg/l 3 Dec 2024 |
| Conductivity at 25 C 0077 | River water | 10 | Jan 2024 – Dec 2024 | 731 µS/cm 3 Dec 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 10 | Jan 2024 – Dec 2024 | 270 mg/l 3 Dec 2024 |
| Ammonia un-ionised as N 0119 | River water | 10 | Jan 2024 – Dec 2024 | 0.00056 mg/l 3 Dec 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 10 | Jan 2024 – Dec 2024 | 5.1 mg/l 3 Dec 2024 |
| Chloride 0172 | River water | 10 | Jan 2024 – Dec 2024 | 39 mg/l 3 Dec 2024 |
| Flow Type 2896 | River water | 4 | Aug 2024 – Dec 2024 | Moderate Flow 3 Dec 2024 |
| Nitrite as N 0118 | River water | 10 | Jan 2024 – Dec 2024 | 0.036 mg/l 3 Dec 2024 |
| Nitrogen, Total as N 9686 | River water | 10 | Jan 2024 – Dec 2024 | 5.2 mg/l 3 Dec 2024 |
| Nitrogen, Total Oxidised as N 0116 | River water | 10 | Jan 2024 – Dec 2024 | 4.6 mg/l 3 Dec 2024 |
| Phosphorus, Total as P 0348 | River water | 10 | Jan 2024 – Dec 2024 | 0.11 mg/l 3 Dec 2024 |
| Silica, reactive as SiO2 0182 | River water | 10 | Jan 2024 – Dec 2024 | 11 mg/l 3 Dec 2024 |
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.