Aire above Thwaite Mill Weir Stourton
EA name: AIRE ABOVE THWAITE MILL WEIR STOURTON
Environment Agency sampling point NE-49400398 · 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
- 4 Aug 2026, 13:3458 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 22 since 3 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 432716, 431180As published, to the nearest 1 m. Open in a map
- River, by its own name
- Aire
- River, by the map
- River AirePlaced on the river its name gives, 20 m from the line.
- Next gauge downstream
- Oulton St Aidans On the Aire Washlands · 7.3 km along the river
- Nearest gauge upstream
- Leeds Knostrop Weir Flood Alleviation Scheme On the River Aire · 0.5 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (21 samples)
Unplanned reactive monitoring (pollution incidents) (1 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
101.2%
Sampled 18 Mar 2025, 18 months ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Mar 2025, 17:02 | 101.2 | 101.2% |
| 20 Feb 2025, 15:36 | 100.1 | 100.1% |
| 16 Jan 2025, 15:22 | 105.7 | 105.7% |
| 13 Dec 2024, 11:56 | 116.4 | 116.4% |
| 18 Nov 2024, 10:39 | 112.9 | 112.9% |
| 7 Oct 2024, 11:12 | 113.7 | 113.7% |
| 17 Sep 2024, 10:18 | 96 | 96% |
| 15 Aug 2024, 07:59 | 95.4 | 95.4% |
| 24 Jul 2024, 08:30 | 94 | 94% |
| 27 Jun 2024, 12:41 | 94.8 | 94.8% |
| 1 Mar 2024, 12:29 | 103.4 | 103.4% |
| 9 Feb 2024, 14:03 | 105.3 | 105.3% |
| 4 Jan 2024, 10:14 | 106.1 | 106.1% |
| 5 Dec 2023, 11:50 | 101.7 | 101.7% |
| 13 Nov 2023, 14:35 | 101.6 | 101.6% |
| 3 Oct 2023, 11:55 | 106.9 | 106.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11.8 mg/l
Sampled 18 Mar 2025, 18 months ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Mar 2025, 17:02 | 11.8 | 11.8 mg/l |
| 20 Feb 2025, 15:36 | 12.1 | 12.1 mg/l |
| 16 Jan 2025, 15:22 | 12.9 | 12.9 mg/l |
| 13 Dec 2024, 11:56 | 13.9 | 13.9 mg/l |
| 18 Nov 2024, 10:39 | 13.5 | 13.5 mg/l |
| 7 Oct 2024, 11:12 | 12.3 | 12.3 mg/l |
| 17 Sep 2024, 10:18 | 10 | 10 mg/l |
| 15 Aug 2024, 07:59 | 9.01 | 9.01 mg/l |
| 24 Jul 2024, 08:30 | 8.93 | 8.93 mg/l |
| 27 Jun 2024, 12:41 | 8.62 | 8.62 mg/l |
| 1 Mar 2024, 12:29 | 12.4 | 12.4 mg/l |
| 9 Feb 2024, 14:03 | 13.2 | 13.2 mg/l |
| 4 Jan 2024, 10:14 | 12.9 | 12.9 mg/l |
| 5 Dec 2023, 11:50 | 12.6 | 12.6 mg/l |
| 13 Nov 2023, 14:35 | 11.7 | 11.7 mg/l |
| 3 Oct 2023, 11:55 | 11 | 11 mg/l |
Water temperature
code 0076 · °C
8.7 °C
Sampled 18 Mar 2025, 18 months ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Mar 2025, 17:02 | 8.7 | 8.7 °C |
| 20 Feb 2025, 15:36 | 7 | 7 °C |
| 16 Jan 2025, 15:22 | 6.6 | 6.6 °C |
| 13 Dec 2024, 11:56 | 7.5 | 7.5 °C |
| 18 Nov 2024, 10:39 | 7.4 | 7.4 °C |
| 7 Oct 2024, 11:12 | 11.7 | 11.7 °C |
| 17 Sep 2024, 10:18 | 13.4 | 13.4 °C |
| 15 Aug 2024, 07:59 | 18 | 18 °C |
| 24 Jul 2024, 08:30 | 17.7 | 17.7 °C |
| 27 Jun 2024, 12:41 | 19.9 | 19.9 °C |
| 1 Mar 2024, 12:29 | 7.4 | 7.4 °C |
| 9 Feb 2024, 14:03 | 5.6 | 5.6 °C |
| 4 Jan 2024, 10:14 | 7 | 7 °C |
| 5 Dec 2023, 11:50 | 6.1 | 6.1 °C |
| 13 Nov 2023, 14:35 | 9.2 | 9.2 °C |
| 3 Oct 2023, 11:55 | 14 | 14 °C |
pH
code 0061
7.93
Sampled 18 Mar 2025, 18 months ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Mar 2025, 17:02 | 7.93 | 7.93 |
| 20 Feb 2025, 15:36 | 7.97 | 7.97 |
| 16 Jan 2025, 15:22 | 7.97 | 7.97 |
| 13 Dec 2024, 11:56 | 7.91 | 7.91 |
| 18 Nov 2024, 10:39 | 7.88 | 7.88 |
| 7 Oct 2024, 11:12 | 7.89 | 7.89 |
| 17 Sep 2024, 10:18 | 7.82 | 7.82 |
| 15 Aug 2024, 07:59 | 7.87 | 7.87 |
| 24 Jul 2024, 08:30 | 7.75 | 7.75 |
| 27 Jun 2024, 12:41 | 7.7 | 7.7 |
| 1 Mar 2024, 12:29 | 8.03 | 8.03 |
| 9 Feb 2024, 14:03 | 7.78 | 7.78 |
| 4 Jan 2024, 10:14 | 7.94 | 7.94 |
| 5 Dec 2023, 11:50 | 7.65 | 7.65 |
| 13 Nov 2023, 14:35 | 8.12 | 8.12 |
| 3 Oct 2023, 11:55 | 7.79 | 7.79 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.26 mg/l
Sampled 18 Mar 2025, 18 months ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Mar 2025, 17:02 | 0.26 | 0.26 mg/l |
| 20 Feb 2025, 15:36 | 0.32 | 0.32 mg/l |
| 16 Jan 2025, 15:22 | 0.22 | 0.22 mg/l |
| 13 Dec 2024, 11:56 | 0.19 | 0.19 mg/l |
| 18 Nov 2024, 10:39 | 0.13 | 0.13 mg/l |
| 7 Oct 2024, 11:12 | 0.12 | 0.12 mg/l |
| 17 Sep 2024, 10:18 | 0.18 | 0.18 mg/l |
| 15 Aug 2024, 07:59 | 0.18 | 0.18 mg/l |
| 24 Jul 2024, 08:30 | 0.28 | 0.28 mg/l |
| 27 Jun 2024, 12:41 | 0.33 | 0.33 mg/l |
| 1 Mar 2024, 12:29 | 0.17 | 0.17 mg/l |
| 9 Feb 2024, 14:03 | 0.52 | 0.52 mg/l |
| 4 Jan 2024, 10:14 | 0.11 | 0.11 mg/l |
| 5 Dec 2023, 11:50 | 0.31 | 0.31 mg/l |
| 13 Nov 2023, 14:35 | 0.25 | 0.25 mg/l |
| 3 Oct 2023, 11:55 | 0.18 | 0.18 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
6.06 mg/l
Sampled 18 Mar 2025, 18 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Mar 2025, 17:02 | 6.06 | 6.06 mg/l |
| 20 Feb 2025, 15:36 | 4.53 | 4.53 mg/l |
| 16 Jan 2025, 15:22 | 2.57 | 2.57 mg/l |
| 13 Dec 2024, 11:56 | 3.66 | 3.66 mg/l |
| 18 Nov 2024, 10:39 | 5.46 | 5.46 mg/l |
| 7 Oct 2024, 11:12 | 3.76 | 3.76 mg/l |
| 17 Sep 2024, 10:18 | 4.35 | 4.35 mg/l |
| 15 Aug 2024, 07:59 | 5.23 | 5.23 mg/l |
| 24 Jul 2024, 08:30 | 5.47 | 5.47 mg/l |
| 27 Jun 2024, 12:41 | 6.15 | 6.15 mg/l |
| 1 Mar 2024, 12:29 | 3.05 | 3.05 mg/l |
| 4 Jan 2024, 10:14 | 1.87 | 1.87 mg/l |
| 5 Dec 2023, 11:50 | 2.46 | 2.46 mg/l |
| 13 Nov 2023, 14:35 | 3.43 | 3.43 mg/l |
| 3 Oct 2023, 11:55 | 2.84 | 2.84 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.1 mg/l
Sampled 18 Mar 2025, 18 months ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Mar 2025, 17:02 | 0.1 | 0.1 mg/l |
| 20 Feb 2025, 15:36 | 0.11 | 0.11 mg/l |
| 16 Jan 2025, 15:22 | 0.056 | 0.056 mg/l |
| 13 Dec 2024, 11:56 | 0.073 | 0.073 mg/l |
| 18 Nov 2024, 10:39 | 0.18 | 0.18 mg/l |
| 7 Oct 2024, 11:12 | 0.22 | 0.22 mg/l |
| 17 Sep 2024, 10:18 | 0.58 | 0.58 mg/l |
| 15 Aug 2024, 07:59 | 0.78 | 0.78 mg/l |
| 24 Jul 2024, 08:30 | 0.66 | 0.66 mg/l |
| 27 Jun 2024, 12:41 | 0.44 | 0.44 mg/l |
| 1 Mar 2024, 12:29 | 0.21 | 0.21 mg/l |
| 9 Feb 2024, 14:03 | 0.14 | 0.14 mg/l |
| 4 Jan 2024, 10:14 | 0.091 | 0.091 mg/l |
| 5 Dec 2023, 11:50 | 0.16 | 0.16 mg/l |
| 13 Nov 2023, 14:35 | 0.12 | 0.12 mg/l |
| 3 Oct 2023, 11:55 | 0.23 | 0.23 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
619 µS/cm
Sampled 18 Mar 2025, 18 months ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Mar 2025, 17:02 | 619 | 619 µS/cm |
| 20 Feb 2025, 15:36 | 743 | 743 µS/cm |
| 16 Jan 2025, 15:22 | 412 | 412 µS/cm |
| 13 Dec 2024, 11:56 | 513 | 513 µS/cm |
| 18 Nov 2024, 10:39 | 881 | 881 µS/cm |
| 7 Oct 2024, 11:12 | 483 | 483 µS/cm |
| 17 Sep 2024, 10:18 | 602 | 602 µS/cm |
| 15 Aug 2024, 07:59 | 873 | 873 µS/cm |
| 24 Jul 2024, 08:30 | 751 | 751 µS/cm |
| 27 Jun 2024, 12:41 | 649 | 649 µS/cm |
| 1 Mar 2024, 12:29 | 542 | 542 µS/cm |
| 9 Feb 2024, 14:03 | 516 | 516 µS/cm |
| 4 Jan 2024, 10:14 | 340 | 340 µS/cm |
| 5 Dec 2023, 11:50 | 447 | 447 µS/cm |
| 13 Nov 2023, 14:35 | 495 | 495 µS/cm |
| 3 Oct 2023, 11:55 | 410 | 410 µS/cm |
Everything measured here
14 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 14 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 16 | Oct 2023 – Mar 2025 | 101.2% 18 Mar 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 16 | Oct 2023 – Mar 2025 | 11.8 mg/l 18 Mar 2025 |
| Temperature of Water 0076 | River water | 16 | Oct 2023 – Mar 2025 | 8.7 °C 18 Mar 2025 |
| pH 0061 | River water | 16 | Oct 2023 – Mar 2025 | 7.93 18 Mar 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 16 | Oct 2023 – Mar 2025 | 0.26 mg/l 18 Mar 2025 |
| Nitrate as N 0117 | River water | 15 | Oct 2023 – Mar 2025 | 6.06 mg/l 18 Mar 2025 |
| Orthophosphate, reactive as P 0180 | River water | 16 | Oct 2023 – Mar 2025 | 0.1 mg/l 18 Mar 2025 |
| Conductivity at 25 C 0077 | River water | 16 | Oct 2023 – Mar 2025 | 619 µS/cm 18 Mar 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 16 | Oct 2023 – Mar 2025 | 130 mg/l 18 Mar 2025 |
| Ammonia un-ionised as N 0119 | River water | 16 | Oct 2023 – Mar 2025 | 0.00368 mg/l 18 Mar 2025 |
| Diazinon 0723 | River water | 5 | Apr 2026 – Aug 2026 | 0.0076 µg/l 4 Aug 2026 |
| Nitrite as N 0118 | River water | 16 | Oct 2023 – Mar 2025 | 0.039 mg/l 18 Mar 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 15 | Oct 2023 – Mar 2025 | 6.1 mg/l 18 Mar 2025 |
| National Grid Reference : Whole : Field report 7434 | Final sewage effluent | 1 | Mar 2025 – Mar 2025 | 1 unitless value 4 Mar 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.