Pollarded Wallnut Friary House
EA name: POLLARDED WALLNUT FRIARY HOUSE (also listed as “RSN0261 POLLARDED WALLNUT FRIARY HOUSE”)
Environment Agency sampling point AN-RSN0261 · 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 2024, 10:092.1 years 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
- 14 since 3 Oct 2023 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 587583, 282694As published, to the nearest 1 m. Open in a map
- River, by its own name
- Its name does not give one
- River, by the map
- River ThetPlaced by position alone, on a line whose map name differs from its own, 6 m from the line.
- Next gauge downstream
- Abbey Heath On the River Little Ouse · 3.8 km along the river
- Why it was sampled
- Monitoring (national agency policy) (14 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
62.4%
Sampled 9 Sep 2024, 2.1 years ago · 14 results banked
Every result (14)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2024, 10:09 | 62.4 | 62.4% |
| 15 Aug 2024, 13:47 | 76.8 | 76.8% |
| 4 Jul 2024, 13:20 | 91.2 | 91.2% |
| 10 Jun 2024, 14:00 | 86.5 | 86.5% |
| 7 May 2024, 11:47 | 93.4 | 93.4% |
| 9 Apr 2024, 09:51 | 84.5 | 84.5% |
| 9 Apr 2024, 09:49 | 86.5 | 86.5% |
| 4 Apr 2024, 12:33 | 87.1 | 87.1% |
| 7 Mar 2024, 14:41 | 94.3 | 94.3% |
| 7 Feb 2024, 11:22 | 82.1 | 82.1% |
| 2 Jan 2024, 11:10 | 80.5 | 80.5% |
| 8 Dec 2023, 14:42 | 81.2 | 81.2% |
| 9 Nov 2023, 11:56 | 67.4 | 67.4% |
| 3 Oct 2023, 14:26 | 74.3 | 74.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
6.07 mg/l
Sampled 9 Sep 2024, 2.1 years ago · 14 results banked
Every result (14)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2024, 10:09 | 6.07 | 6.07 mg/l |
| 15 Aug 2024, 13:47 | 7.06 | 7.06 mg/l |
| 4 Jul 2024, 13:20 | 9.13 | 9.13 mg/l |
| 10 Jun 2024, 14:00 | 8.99 | 8.99 mg/l |
| 7 May 2024, 11:47 | 9.53 | 9.53 mg/l |
| 9 Apr 2024, 09:51 | 9.1 | 9.1 mg/l |
| 9 Apr 2024, 09:49 | 9.32 | 9.32 mg/l |
| 4 Apr 2024, 12:33 | 9.5 | 9.5 mg/l |
| 7 Mar 2024, 14:41 | 11.1 | 11.1 mg/l |
| 7 Feb 2024, 11:22 | 9.61 | 9.61 mg/l |
| 2 Jan 2024, 11:10 | 9.56 | 9.56 mg/l |
| 8 Dec 2023, 14:42 | 10.2 | 10.2 mg/l |
| 9 Nov 2023, 11:56 | 7.93 | 7.93 mg/l |
| 3 Oct 2023, 14:26 | 7.42 | 7.42 mg/l |
Water temperature
code 0076 · °C
16.5 °C
Sampled 9 Sep 2024, 2.1 years ago · 14 results banked
Every result (14)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2024, 10:09 | 16.5 | 16.5 °C |
| 15 Aug 2024, 13:47 | 19.3 | 19.3 °C |
| 4 Jul 2024, 13:20 | 15.2 | 15.2 °C |
| 10 Jun 2024, 14:00 | 13.5 | 13.5 °C |
| 7 May 2024, 11:47 | 14.3 | 14.3 °C |
| 9 Apr 2024, 09:51 | 11.9 | 11.9 °C |
| 9 Apr 2024, 09:49 | 11.9 | 11.9 °C |
| 4 Apr 2024, 12:33 | 11.4 | 11.4 °C |
| 7 Mar 2024, 14:41 | 8.3 | 8.3 °C |
| 7 Feb 2024, 11:22 | 8.4 | 8.4 °C |
| 2 Jan 2024, 11:10 | 7.8 | 7.8 °C |
| 8 Dec 2023, 14:42 | 5.5 | 5.5 °C |
| 9 Nov 2023, 11:56 | 8.2 | 8.2 °C |
| 3 Oct 2023, 14:26 | 15.3 | 15.3 °C |
pH
code 0061
7.64
Sampled 9 Sep 2024, 2.1 years ago · 14 results banked
Every result (14)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2024, 10:09 | 7.64 | 7.64 |
| 15 Aug 2024, 13:47 | 7.88 | 7.88 |
| 4 Jul 2024, 13:20 | 7.92 | 7.92 |
| 10 Jun 2024, 14:00 | 7.87 | 7.87 |
| 7 May 2024, 11:47 | 7.99 | 7.99 |
| 9 Apr 2024, 09:51 | 7.84 | 7.84 |
| 9 Apr 2024, 09:49 | 7.87 | 7.87 |
| 4 Apr 2024, 12:33 | 7.8 | 7.8 |
| 7 Mar 2024, 14:41 | 7.95 | 7.95 |
| 7 Feb 2024, 11:22 | 7.83 | 7.83 |
| 2 Jan 2024, 11:10 | 7.76 | 7.76 |
| 8 Dec 2023, 14:42 | 7.76 | 7.76 |
| 9 Nov 2023, 11:56 | 7.83 | 7.83 |
| 3 Oct 2023, 14:26 | 7.8 | 7.8 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 9 Sep 2024, 2.1 years ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2024, 10:09 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Aug 2024, 13:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Jul 2024, 13:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Jun 2024, 14:00 | 0.06 | 0.06 mg/l |
| 7 May 2024, 11:47 | 0.038 | 0.038 mg/l |
| 9 Apr 2024, 09:51 | 0.041 | 0.041 mg/l |
| 9 Apr 2024, 09:49 | 0.038 | 0.038 mg/l |
| 7 Mar 2024, 14:41 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Feb 2024, 11:22 | 0.074 | 0.074 mg/l |
| 2 Jan 2024, 11:10 | 0.052 | 0.052 mg/l |
| 8 Dec 2023, 14:42 | 0.04 | 0.04 mg/l |
| 9 Nov 2023, 11:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Oct 2023, 14:26 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
9.46 mg/l
Sampled 9 Sep 2024, 2.1 years ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2024, 10:09 | 9.46 | 9.46 mg/l |
| 15 Aug 2024, 13:47 | 9.57 | 9.57 mg/l |
| 4 Jul 2024, 13:20 | 9.97 | 9.97 mg/l |
| 10 Jun 2024, 14:00 | 8.26 | 8.26 mg/l |
| 7 May 2024, 11:47 | 8.06 | 8.06 mg/l |
| 9 Apr 2024, 09:51 | 7.87 | 7.87 mg/l |
| 9 Apr 2024, 09:49 | 7.87 | 7.87 mg/l |
| 7 Mar 2024, 14:41 | 7.48 | 7.48 mg/l |
| 7 Feb 2024, 11:22 | 9.05 | 9.05 mg/l |
| 2 Jan 2024, 11:10 | 7.96 | 7.96 mg/l |
| 8 Dec 2023, 14:42 | 8.96 | 8.96 mg/l |
| 9 Nov 2023, 11:56 | 6.86 | 6.86 mg/l |
| 3 Oct 2023, 14:26 | 7.47 | 7.47 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.066 mg/l
Sampled 9 Sep 2024, 2.1 years ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2024, 10:09 | 0.066 | 0.066 mg/l |
| 15 Aug 2024, 13:47 | 0.06 | 0.06 mg/l |
| 4 Jul 2024, 13:20 | 0.059 | 0.059 mg/l |
| 10 Jun 2024, 14:00 | 0.046 | 0.046 mg/l |
| 7 May 2024, 11:47 | 0.054 | 0.054 mg/l |
| 9 Apr 2024, 09:51 | 0.049 | 0.049 mg/l |
| 9 Apr 2024, 09:49 | 0.05 | 0.05 mg/l |
| 7 Mar 2024, 14:41 | 0.025 | 0.025 mg/l |
| 7 Feb 2024, 11:22 | 0.075 | 0.075 mg/l |
| 2 Jan 2024, 11:10 | 0.074 | 0.074 mg/l |
| 8 Dec 2023, 14:42 | 0.061 | 0.061 mg/l |
| 9 Nov 2023, 11:56 | 0.037 | 0.037 mg/l |
| 3 Oct 2023, 14:26 | 0.077 | 0.077 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
791 µS/cm
Sampled 9 Sep 2024, 2.1 years ago · 14 results banked
Every result (14)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2024, 10:09 | 791 | 791 µS/cm |
| 15 Aug 2024, 13:47 | 816 | 816 µS/cm |
| 4 Jul 2024, 13:20 | 817 | 817 µS/cm |
| 10 Jun 2024, 14:00 | 799 | 799 µS/cm |
| 7 May 2024, 11:47 | 795 | 795 µS/cm |
| 9 Apr 2024, 09:51 | 815 | 815 µS/cm |
| 9 Apr 2024, 09:49 | 809 | 809 µS/cm |
| 4 Apr 2024, 12:33 | 802 | 802 µS/cm |
| 7 Mar 2024, 14:41 | 766 | 766 µS/cm |
| 7 Feb 2024, 11:22 | 831 | 831 µS/cm |
| 2 Jan 2024, 11:10 | 818 | 818 µS/cm |
| 8 Dec 2023, 14:42 | 858 | 858 µS/cm |
| 9 Nov 2023, 11:56 | 773 | 773 µS/cm |
| 3 Oct 2023, 14:26 | 841 | 841 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 | 14 | Oct 2023 – Sep 2024 | 62.4% 9 Sep 2024 |
| Oxygen, Dissolved as O2 9924 | River water | 14 | Oct 2023 – Sep 2024 | 6.07 mg/l 9 Sep 2024 |
| Temperature of Water 0076 | River water | 14 | Oct 2023 – Sep 2024 | 16.5 °C 9 Sep 2024 |
| pH 0061 | River water | 14 | Oct 2023 – Sep 2024 | 7.64 9 Sep 2024 |
| Ammoniacal Nitrogen as N 0111 | River water | 13 | Oct 2023 – Sep 2024 | below 0.03 mg/l 9 Sep 2024 |
| Nitrate as N 0117 | River water | 13 | Oct 2023 – Sep 2024 | 9.46 mg/l 9 Sep 2024 |
| Orthophosphate, reactive as P 0180 | River water | 13 | Oct 2023 – Sep 2024 | 0.066 mg/l 9 Sep 2024 |
| Conductivity at 25 C 0077 | River water | 14 | Oct 2023 – Sep 2024 | 791 µS/cm 9 Sep 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 13 | Oct 2023 – Sep 2024 | 220 mg/l 9 Sep 2024 |
| Ammonia un-ionised as N 0119 | River water | 13 | Oct 2023 – Sep 2024 | below 0.00039 mg/l 9 Sep 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 13 | Oct 2023 – Sep 2024 | 4.3 mg/l 9 Sep 2024 |
| Chloride 0172 | River water | 13 | Oct 2023 – Sep 2024 | 59 mg/l 9 Sep 2024 |
| Flow Type 2896 | River water | 1 | Sep 2024 – Sep 2024 | Moderate Flow 9 Sep 2024 |
| Nitrite as N 0118 | River water | 13 | Oct 2023 – Sep 2024 | 0.037 mg/l 9 Sep 2024 |
| Nitrogen, Total as N 9686 | River water | 12 | Oct 2023 – Sep 2024 | 9.9 mg/l 9 Sep 2024 |
| Nitrogen, Total Oxidised as N 0116 | River water | 13 | Oct 2023 – Sep 2024 | 9.5 mg/l 9 Sep 2024 |
| Phosphorus, Total as P 0348 | River water | 12 | Oct 2023 – Sep 2024 | 0.083 mg/l 9 Sep 2024 |
| Silica, reactive as SiO2 0182 | River water | 13 | Oct 2023 – Sep 2024 | 14 mg/l 9 Sep 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.