Allington Stream, upstream of Itchen confluence
EA name: ALLINGTON STRM, U/S ITCHEN CONF (also listed as “ALLINGTON STREAM UPSTREAM OF ITCHEN CONFLUENCE”)
Environment Agency sampling point SO-G0006970 · 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 Dec 2025, 11:559 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 30 Sep 2026 and had nothing newer.
- Samples banked
- 22 since 23 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 446836, 117800As published, to the nearest 1 m. Open in a map
- River, by its own name
- Allington Strm
- River, by the map
- Not placedTwo watercourses within reach (7 m and 31 m) and no name to choose by. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (22 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
88.7%
Sampled 16 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 11:55 | 88.7 | 88.7% |
| 4 Dec 2025, 12:50 | 90.9 | 90.9% |
| 19 Nov 2025, 14:04 | 90.1 | 90.1% |
| 4 Nov 2025, 09:52 | 80.5 | 80.5% |
| 11 Mar 2025, 13:29 | 105.3 | 105.3% |
| 24 Feb 2025, 12:31 | 92.1 | 92.1% |
| 30 Jan 2025, 09:59 | 92.6 | 92.6% |
| 5 Dec 2024, 11:19 | 88.1 | 88.1% |
| 18 Nov 2024, 10:19 | 87 | 87% |
| 17 Oct 2024, 09:04 | 89.3 | 89.3% |
| 19 Sep 2024, 10:33 | 84.5 | 84.5% |
| 21 Aug 2024, 10:23 | 86 | 86% |
| 15 Jul 2024, 15:17 | 92.5 | 92.5% |
| 19 Jun 2024, 13:35 | 95.5 | 95.5% |
| 14 May 2024, 12:22 | 92.5 | 92.5% |
| 24 Apr 2024, 13:37 | 99.4 | 99.4% |
| 27 Mar 2024, 11:42 | 94.4 | 94.4% |
| 22 Feb 2024, 12:36 | 94.7 | 94.7% |
| 18 Jan 2024, 12:21 | 93.4 | 93.4% |
| 5 Dec 2023, 14:29 | 90.2 | 90.2% |
| 22 Nov 2023, 11:10 | 88.7 | 88.7% |
| 23 Oct 2023, 15:05 | 91.8 | 91.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10 mg/l
Sampled 16 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 11:55 | 10 | 10 mg/l |
| 4 Dec 2025, 12:50 | 10.6 | 10.6 mg/l |
| 19 Nov 2025, 14:04 | 10.8 | 10.8 mg/l |
| 4 Nov 2025, 09:52 | 8.54 | 8.54 mg/l |
| 11 Mar 2025, 13:29 | 12 | 12 mg/l |
| 24 Feb 2025, 12:31 | 10.4 | 10.4 mg/l |
| 30 Jan 2025, 09:59 | 11.5 | 11.5 mg/l |
| 5 Dec 2024, 11:19 | 9.79 | 9.79 mg/l |
| 18 Nov 2024, 10:19 | 9.85 | 9.85 mg/l |
| 17 Oct 2024, 09:04 | 9.18 | 9.18 mg/l |
| 19 Sep 2024, 10:33 | 8.5 | 8.5 mg/l |
| 21 Aug 2024, 10:23 | 8.76 | 8.76 mg/l |
| 15 Jul 2024, 15:17 | 9.3 | 9.3 mg/l |
| 19 Jun 2024, 13:35 | 9.61 | 9.61 mg/l |
| 14 May 2024, 12:22 | 9.45 | 9.45 mg/l |
| 24 Apr 2024, 13:37 | 11.1 | 11.1 mg/l |
| 27 Mar 2024, 11:42 | 11 | 11 mg/l |
| 22 Feb 2024, 12:36 | 10.7 | 10.7 mg/l |
| 18 Jan 2024, 12:21 | 12.5 | 12.5 mg/l |
| 5 Dec 2023, 14:29 | 10.8 | 10.8 mg/l |
| 22 Nov 2023, 11:10 | 10.3 | 10.3 mg/l |
| 23 Oct 2023, 15:05 | 9.94 | 9.94 mg/l |
Water temperature
code 0076 · °C
9.8 °C
Sampled 16 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 11:55 | 9.8 | 9.8 °C |
| 4 Dec 2025, 12:50 | 8.6 | 8.6 °C |
| 19 Nov 2025, 14:04 | 7.4 | 7.4 °C |
| 4 Nov 2025, 09:52 | 12.6 | 12.6 °C |
| 11 Mar 2025, 13:29 | 9.4 | 9.4 °C |
| 24 Feb 2025, 12:31 | 9.9 | 9.9 °C |
| 30 Jan 2025, 09:59 | 6.1 | 6.1 °C |
| 5 Dec 2024, 11:19 | 10.6 | 10.6 °C |
| 18 Nov 2024, 10:19 | 9.8 | 9.8 °C |
| 17 Oct 2024, 09:04 | 14 | 14 °C |
| 19 Sep 2024, 10:33 | 15 | 15 °C |
| 21 Aug 2024, 10:23 | 14.4 | 14.4 °C |
| 15 Jul 2024, 15:17 | 15 | 15 °C |
| 19 Jun 2024, 13:35 | 15 | 15 °C |
| 14 May 2024, 12:22 | 14.3 | 14.3 °C |
| 24 Apr 2024, 13:37 | 10.2 | 10.2 °C |
| 27 Mar 2024, 11:42 | 8.7 | 8.7 °C |
| 22 Feb 2024, 12:36 | 9.9 | 9.9 °C |
| 18 Jan 2024, 12:21 | 3.2 | 3.2 °C |
| 5 Dec 2023, 14:29 | 7.5 | 7.5 °C |
| 22 Nov 2023, 11:10 | 8.9 | 8.9 °C |
| 23 Oct 2023, 15:05 | 11.7 | 11.7 °C |
pH
code 0061
7.58
Sampled 16 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 11:55 | 7.58 | 7.58 |
| 4 Dec 2025, 12:50 | 7.53 | 7.53 |
| 19 Nov 2025, 14:04 | 7.46 | 7.46 |
| 4 Nov 2025, 09:52 | 7.36 | 7.36 |
| 11 Mar 2025, 13:29 | 7.69 | 7.69 |
| 24 Feb 2025, 12:31 | 7.27 | 7.27 |
| 30 Jan 2025, 09:59 | 7.5 | 7.5 |
| 5 Dec 2024, 11:19 | 7.27 | 7.27 |
| 18 Nov 2024, 10:19 | 7.44 | 7.44 |
| 17 Oct 2024, 09:04 | 7.37 | 7.37 |
| 19 Sep 2024, 10:33 | 7.78 | 7.78 |
| 21 Aug 2024, 10:23 | 7.74 | 7.74 |
| 15 Jul 2024, 15:17 | 7.72 | 7.72 |
| 19 Jun 2024, 13:35 | 7.96 | 7.96 |
| 14 May 2024, 12:22 | 7.58 | 7.58 |
| 24 Apr 2024, 13:37 | 7.68 | 7.68 |
| 27 Mar 2024, 11:42 | 7.34 | 7.34 |
| 22 Feb 2024, 12:36 | 7.6 | 7.6 |
| 18 Jan 2024, 12:21 | 7.84 | 7.84 |
| 5 Dec 2023, 14:29 | 7.4 | 7.4 |
| 22 Nov 2023, 11:10 | 7.54 | 7.54 |
| 23 Oct 2023, 15:05 | 7.49 | 7.49 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.056 mg/l
Sampled 16 Dec 2025, 9 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 11:55 | 0.056 | 0.056 mg/l |
| 4 Dec 2025, 12:50 | 0.034 | 0.034 mg/l |
| 19 Nov 2025, 14:04 | 0.09 | 0.09 mg/l |
| 4 Nov 2025, 09:52 | 0.067 | 0.067 mg/l |
| 11 Mar 2025, 13:29 | 0.059 | 0.059 mg/l |
| 24 Feb 2025, 12:31 | 0.053 | 0.053 mg/l |
| 30 Jan 2025, 09:59 | 0.083 | 0.083 mg/l |
| 18 Nov 2024, 10:19 | 0.081 | 0.081 mg/l |
| 17 Oct 2024, 09:04 | 0.042 | 0.042 mg/l |
| 19 Sep 2024, 10:33 | 0.046 | 0.046 mg/l |
| 21 Aug 2024, 10:23 | 0.044 | 0.044 mg/l |
| 15 Jul 2024, 15:17 | 0.085 | 0.085 mg/l |
| 19 Jun 2024, 13:35 | 0.056 | 0.056 mg/l |
| 14 May 2024, 12:22 | 0.077 | 0.077 mg/l |
| 24 Apr 2024, 13:37 | 0.093 | 0.093 mg/l |
| 27 Mar 2024, 11:42 | 0.094 | 0.094 mg/l |
| 22 Feb 2024, 12:36 | 0.073 | 0.073 mg/l |
| 18 Jan 2024, 12:21 | 0.15 | 0.15 mg/l |
| 5 Dec 2023, 14:29 | 0.053 | 0.053 mg/l |
| 22 Nov 2023, 11:10 | 0.055 | 0.055 mg/l |
| 23 Oct 2023, 15:05 | 0.045 | 0.045 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.993 mg/l
Sampled 16 Dec 2025, 9 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 11:55 | 0.993 | 0.993 mg/l |
| 4 Dec 2025, 12:50 | 1.19 | 1.19 mg/l |
| 19 Nov 2025, 14:04 | 1.39 | 1.39 mg/l |
| 4 Nov 2025, 09:52 | 1.58 | 1.58 mg/l |
| 11 Mar 2025, 13:29 | 1.59 | 1.59 mg/l |
| 24 Feb 2025, 12:31 | 0.916 | 0.916 mg/l |
| 30 Jan 2025, 09:59 | 1.79 | 1.79 mg/l |
| 18 Nov 2024, 10:19 | 1.09 | 1.09 mg/l |
| 17 Oct 2024, 09:04 | 1.08 | 1.08 mg/l |
| 19 Sep 2024, 10:33 | 1.99 | 1.99 mg/l |
| 21 Aug 2024, 10:23 | 2.38 | 2.38 mg/l |
| 15 Jul 2024, 15:17 | 1.87 | 1.87 mg/l |
| 19 Jun 2024, 13:35 | 2.18 | 2.18 mg/l |
| 14 May 2024, 12:22 | 1.27 | 1.27 mg/l |
| 24 Apr 2024, 13:37 | 2.08 | 2.08 mg/l |
| 27 Mar 2024, 11:42 | 1.09 | 1.09 mg/l |
| 22 Feb 2024, 12:36 | 0.76 | 0.76 mg/l |
| 18 Jan 2024, 12:21 | 2.19 | 2.19 mg/l |
| 5 Dec 2023, 14:29 | 1.29 | 1.29 mg/l |
| 22 Nov 2023, 11:10 | 1.59 | 1.59 mg/l |
| 23 Oct 2023, 15:05 | 1.78 | 1.78 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.04 mg/l
Sampled 16 Dec 2025, 9 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 11:55 | 0.04 | 0.04 mg/l |
| 4 Dec 2025, 12:50 | 0.034 | 0.034 mg/l |
| 19 Nov 2025, 14:04 | 0.054 | 0.054 mg/l |
| 4 Nov 2025, 09:52 | 0.059 | 0.059 mg/l |
| 11 Mar 2025, 13:29 | 0.061 | 0.061 mg/l |
| 24 Feb 2025, 12:31 | 0.1 | 0.1 mg/l |
| 30 Jan 2025, 09:59 | 0.053 | 0.053 mg/l |
| 18 Nov 2024, 10:19 | 0.079 | 0.079 mg/l |
| 17 Oct 2024, 09:04 | 0.083 | 0.083 mg/l |
| 19 Sep 2024, 10:33 | 0.1 | 0.1 mg/l |
| 21 Aug 2024, 10:23 | 0.1 | 0.1 mg/l |
| 15 Jul 2024, 15:17 | 0.082 | 0.082 mg/l |
| 19 Jun 2024, 13:35 | 0.079 | 0.079 mg/l |
| 14 May 2024, 12:22 | 0.095 | 0.095 mg/l |
| 24 Apr 2024, 13:37 | 0.071 | 0.071 mg/l |
| 27 Mar 2024, 11:42 | 0.038 | 0.038 mg/l |
| 22 Feb 2024, 12:36 | 0.046 | 0.046 mg/l |
| 18 Jan 2024, 12:21 | 0.075 | 0.075 mg/l |
| 5 Dec 2023, 14:29 | 0.043 | 0.043 mg/l |
| 22 Nov 2023, 11:10 | 0.088 | 0.088 mg/l |
| 23 Oct 2023, 15:05 | 0.095 | 0.095 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
453 µS/cm
Sampled 16 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 11:55 | 453 | 453 µS/cm |
| 4 Dec 2025, 12:50 | 360 | 360 µS/cm |
| 19 Nov 2025, 14:04 | 586 | 586 µS/cm |
| 4 Nov 2025, 09:52 | 623 | 623 µS/cm |
| 11 Mar 2025, 13:29 | 586 | 586 µS/cm |
| 24 Feb 2025, 12:31 | 257 | 257 µS/cm |
| 30 Jan 2025, 09:59 | 514 | 514 µS/cm |
| 5 Dec 2024, 11:19 | 310 | 310 µS/cm |
| 18 Nov 2024, 10:19 | 450 | 450 µS/cm |
| 17 Oct 2024, 09:04 | 384 | 384 µS/cm |
| 19 Sep 2024, 10:33 | 687 | 687 µS/cm |
| 21 Aug 2024, 10:23 | 659 | 659 µS/cm |
| 15 Jul 2024, 15:17 | 663 | 663 µS/cm |
| 19 Jun 2024, 13:35 | 666 | 666 µS/cm |
| 14 May 2024, 12:22 | 356 | 356 µS/cm |
| 24 Apr 2024, 13:37 | 599 | 599 µS/cm |
| 27 Mar 2024, 11:42 | 410 | 410 µS/cm |
| 22 Feb 2024, 12:36 | 243 | 243 µS/cm |
| 18 Jan 2024, 12:21 | 597 | 597 µS/cm |
| 5 Dec 2023, 14:29 | 364 | 364 µS/cm |
| 22 Nov 2023, 11:10 | 479 | 479 µS/cm |
| 23 Oct 2023, 15:05 | 562 | 562 µS/cm |
Everything measured here
13 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 13 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 22 | Oct 2023 – Dec 2025 | 88.7% 16 Dec 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 22 | Oct 2023 – Dec 2025 | 10 mg/l 16 Dec 2025 |
| Temperature of Water 0076 | River water | 22 | Oct 2023 – Dec 2025 | 9.8 °C 16 Dec 2025 |
| pH 0061 | River water | 22 | Oct 2023 – Dec 2025 | 7.58 16 Dec 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 21 | Oct 2023 – Dec 2025 | 0.056 mg/l 16 Dec 2025 |
| Nitrate as N 0117 | River water | 21 | Oct 2023 – Dec 2025 | 0.993 mg/l 16 Dec 2025 |
| Orthophosphate, reactive as P 0180 | River water | 21 | Oct 2023 – Dec 2025 | 0.04 mg/l 16 Dec 2025 |
| Conductivity at 25 C 0077 | River water | 22 | Oct 2023 – Dec 2025 | 453 µS/cm 16 Dec 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 21 | Oct 2023 – Dec 2025 | 120 mg/l 16 Dec 2025 |
| Ammonia un-ionised as N 0119 | River water | 21 | Oct 2023 – Dec 2025 | 0.00039 mg/l 16 Dec 2025 |
| BOD : 5 Day ATU 0085 | River water | 18 | Feb 2024 – Dec 2025 | 1.2 mg/l 16 Dec 2025 |
| Nitrite as N 0118 | River water | 21 | Oct 2023 – Dec 2025 | 0.0072 mg/l 16 Dec 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 21 | Oct 2023 – Dec 2025 | 1 mg/l 16 Dec 2025 |
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.