Thornton and Owesby
EA name: THORNTON AND OWESBY (also listed as “THORNTON AND OWESBY TRIB OF ANCHOLME”)
Environment Agency sampling point AN-THRNLEMR · 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 Sep 2026, 11:4627 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 23 since 10 Jun 2024 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 506094, 395900As published, to the nearest 1 m. Open in a map
- River, by its own name
- Ancholme
- River, by the map
- Not placedIts name gives Ancholme; the only line close by, 4 m away, is Thornton and Owersby Beck and is not traced into it. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Environmental monitoring statutory (EU directives) (23 samples)
1 visit found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
95.8%
Sampled 4 Sep 2026, 27 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 11:46 | 95.8 | 95.8% |
| 1 Jul 2026, 10:20 | 89.8 | 89.8% |
| 16 Jun 2026, 10:09 | 89.1 | 89.1% |
| 18 May 2026, 12:23 | 107.8 | 107.8% |
| 17 Apr 2026, 08:21 | 101.1 | 101.1% |
| 12 Mar 2026, 11:08 | 97.6 | 97.6% |
| 6 Feb 2026, 09:49 | 96.3 | 96.3% |
| 8 Jan 2026, 09:43 | 98.7 | 98.7% |
| 15 Dec 2025, 10:59 | 95.7 | 95.7% |
| 6 Nov 2025, 09:08 | 93.2 | 93.2% |
| 16 Oct 2025, 09:02 | 86.4 | 86.4% |
| 3 Apr 2025, 09:36 | 111.4 | 111.4% |
| 5 Mar 2025, 09:41 | 99.8 | 99.8% |
| 5 Feb 2025, 11:02 | 99.4 | 99.4% |
| 3 Jan 2025, 11:33 | 100.1 | 100.1% |
| 4 Dec 2024, 11:07 | 98.7 | 98.7% |
| 4 Nov 2024, 11:11 | 97.1 | 97.1% |
| 4 Oct 2024, 11:21 | 97.4 | 97.4% |
| 4 Sep 2024, 10:20 | 91.6 | 91.6% |
| 12 Aug 2024, 09:34 | 90.3 | 90.3% |
| 1 Jul 2024, 08:53 | 97.7 | 97.7% |
| 10 Jun 2024, 11:05 | 93.5 | 93.5% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.33 mg/l
Sampled 4 Sep 2026, 27 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 11:46 | 9.33 | 9.33 mg/l |
| 1 Jul 2026, 10:20 | 8.75 | 8.75 mg/l |
| 16 Jun 2026, 10:09 | 9.2 | 9.2 mg/l |
| 18 May 2026, 12:23 | 11.6 | 11.6 mg/l |
| 17 Apr 2026, 08:21 | 11.4 | 11.4 mg/l |
| 12 Mar 2026, 11:08 | 11.5 | 11.5 mg/l |
| 6 Feb 2026, 09:49 | 12.2 | 12.2 mg/l |
| 8 Jan 2026, 09:43 | 13.6 | 13.6 mg/l |
| 15 Dec 2025, 10:59 | 11 | 11 mg/l |
| 6 Nov 2025, 09:08 | 10 | 10 mg/l |
| 16 Oct 2025, 09:02 | 9.62 | 9.62 mg/l |
| 3 Apr 2025, 09:36 | 13.1 | 13.1 mg/l |
| 5 Mar 2025, 09:41 | 12.8 | 12.8 mg/l |
| 5 Feb 2025, 11:02 | 12.9 | 12.9 mg/l |
| 3 Jan 2025, 11:33 | 13.2 | 13.2 mg/l |
| 4 Dec 2024, 11:07 | 12.2 | 12.2 mg/l |
| 4 Nov 2024, 11:11 | 10.6 | 10.6 mg/l |
| 4 Oct 2024, 11:21 | 10.6 | 10.6 mg/l |
| 4 Sep 2024, 10:20 | 9.42 | 9.42 mg/l |
| 12 Aug 2024, 09:34 | 8.51 | 8.51 mg/l |
| 1 Jul 2024, 08:53 | 10.1 | 10.1 mg/l |
| 10 Jun 2024, 11:05 | 10 | 10 mg/l |
Water temperature
code 0076 · °C
16.5 °C
Sampled 4 Sep 2026, 27 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 11:46 | 16.5 | 16.5 °C |
| 1 Jul 2026, 10:20 | 16.5 | 16.5 °C |
| 16 Jun 2026, 10:09 | 13.8 | 13.8 °C |
| 18 May 2026, 12:23 | 11.9 | 11.9 °C |
| 17 Apr 2026, 08:21 | 10 | 10 °C |
| 12 Mar 2026, 11:08 | 8.2 | 8.2 °C |
| 6 Feb 2026, 09:49 | 5.4 | 5.4 °C |
| 8 Jan 2026, 09:43 | 2.2 | 2.2 °C |
| 15 Dec 2025, 10:59 | 9 | 9 °C |
| 6 Nov 2025, 09:08 | 11.9 | 11.9 °C |
| 16 Oct 2025, 09:02 | 10.5 | 10.5 °C |
| 3 Apr 2025, 09:36 | 8.2 | 8.2 °C |
| 5 Mar 2025, 09:41 | 4.8 | 4.8 °C |
| 5 Feb 2025, 11:02 | 4.4 | 4.4 °C |
| 3 Jan 2025, 11:33 | 3.6 | 3.6 °C |
| 4 Dec 2024, 11:07 | 6.2 | 6.2 °C |
| 4 Nov 2024, 11:11 | 11.3 | 11.3 °C |
| 4 Oct 2024, 11:21 | 11.6 | 11.6 °C |
| 4 Sep 2024, 10:20 | 14 | 14 °C |
| 12 Aug 2024, 09:34 | 18.1 | 18.1 °C |
| 1 Jul 2024, 08:53 | 13.7 | 13.7 °C |
| 10 Jun 2024, 11:05 | 12.1 | 12.1 °C |
pH
code 0061
8.06
Sampled 4 Sep 2026, 27 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 11:46 | 8.06 | 8.06 |
| 1 Jul 2026, 10:20 | 8.1 | 8.1 |
| 16 Jun 2026, 10:09 | 8.08 | 8.08 |
| 18 May 2026, 12:23 | 8.37 | 8.37 |
| 17 Apr 2026, 08:21 | 8.23 | 8.23 |
| 12 Mar 2026, 11:08 | 8.19 | 8.19 |
| 6 Feb 2026, 09:49 | 7.76 | 7.76 |
| 8 Jan 2026, 09:43 | 8.26 | 8.26 |
| 15 Dec 2025, 10:59 | 7.9 | 7.9 |
| 6 Nov 2025, 09:08 | 7.94 | 7.94 |
| 16 Oct 2025, 09:02 | 7.99 | 7.99 |
| 3 Apr 2025, 09:36 | 8.43 | 8.43 |
| 5 Mar 2025, 09:41 | 8.23 | 8.23 |
| 5 Feb 2025, 11:02 | 8.18 | 8.18 |
| 3 Jan 2025, 11:33 | 8.04 | 8.04 |
| 4 Dec 2024, 11:07 | 7.98 | 7.98 |
| 4 Nov 2024, 11:11 | 8.21 | 8.21 |
| 4 Oct 2024, 11:21 | 8.02 | 8.02 |
| 4 Sep 2024, 10:20 | 8.1 | 8.1 |
| 12 Aug 2024, 09:34 | 8.09 | 8.09 |
| 1 Jul 2024, 08:53 | 8.38 | 8.38 |
| 10 Jun 2024, 11:05 | 7.63 | 7.63 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 4 Sep 2026, 27 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 11:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Jul 2026, 10:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Jun 2026, 10:09 | 0.16 | 0.16 mg/l |
| 18 May 2026, 12:23 | 0.049 | 0.049 mg/l |
| 17 Apr 2026, 08:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Mar 2026, 11:08 | 0.041 | 0.041 mg/l |
| 6 Feb 2026, 09:49 | 0.11 | 0.11 mg/l |
| 8 Jan 2026, 09:43 | 0.046 | 0.046 mg/l |
| 15 Dec 2025, 10:59 | 0.042 | 0.042 mg/l |
| 6 Nov 2025, 09:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Oct 2025, 09:02 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Mar 2025, 09:41 | 0.052 | 0.052 mg/l |
| 5 Feb 2025, 11:02 | 0.057 | 0.057 mg/l |
| 3 Jan 2025, 11:33 | 0.054 | 0.054 mg/l |
| 4 Dec 2024, 11:07 | 0.092 | 0.092 mg/l |
| 4 Nov 2024, 11:11 | 0.039 | 0.039 mg/l |
| 4 Oct 2024, 11:21 | 0.043 | 0.043 mg/l |
| 4 Sep 2024, 10:20 | 0.056 | 0.056 mg/l |
| 12 Aug 2024, 09:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Jul 2024, 08:53 | 0.037 | 0.037 mg/l |
| 10 Jun 2024, 11:05 | 1.1 | 1.1 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.912 mg/l
Sampled 4 Sep 2026, 27 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 11:46 | 0.912 | 0.912 mg/l |
| 1 Jul 2026, 10:20 | 2.59 | 2.59 mg/l |
| 16 Jun 2026, 10:09 | 1.62 | 1.62 mg/l |
| 18 May 2026, 12:23 | 1.78 | 1.78 mg/l |
| 17 Apr 2026, 08:21 | 3.78 | 3.78 mg/l |
| 12 Mar 2026, 11:08 | 5.78 | 5.78 mg/l |
| 6 Feb 2026, 09:49 | 5.48 | 5.48 mg/l |
| 8 Jan 2026, 09:43 | 6.77 | 6.77 mg/l |
| 15 Dec 2025, 10:59 | 7.18 | 7.18 mg/l |
| 6 Nov 2025, 09:08 | 15 | 15 mg/l |
| 16 Oct 2025, 09:02 | 4.39 | 4.39 mg/l |
| 5 Mar 2025, 09:41 | 6.57 | 6.57 mg/l |
| 5 Feb 2025, 11:02 | 7.58 | 7.58 mg/l |
| 3 Jan 2025, 11:33 | 8.47 | 8.47 mg/l |
| 4 Dec 2024, 11:07 | 8.67 | 8.67 mg/l |
| 4 Nov 2024, 11:11 | 8.07 | 8.07 mg/l |
| 4 Oct 2024, 11:21 | 9.77 | 9.77 mg/l |
| 4 Sep 2024, 10:20 | 1.29 | 1.29 mg/l |
| 12 Aug 2024, 09:34 | 0.994 | 0.994 mg/l |
| 1 Jul 2024, 08:53 | 4.26 | 4.26 mg/l |
| 10 Jun 2024, 11:05 | 16.9 | 16.9 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.037 mg/l
Sampled 4 Sep 2026, 27 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 11:46 | 0.037 | 0.037 mg/l |
| 1 Jul 2026, 10:20 | 0.08 | 0.08 mg/l |
| 16 Jun 2026, 10:09 | 0.034 | 0.034 mg/l |
| 18 May 2026, 12:23 | 0.025 | 0.025 mg/l |
| 17 Apr 2026, 08:21 | 0.012 | 0.012 mg/l |
| 12 Mar 2026, 11:08 | 0.038 | 0.038 mg/l |
| 6 Feb 2026, 09:49 | 0.042 | 0.042 mg/l |
| 8 Jan 2026, 09:43 | 0.03 | 0.03 mg/l |
| 15 Dec 2025, 10:59 | 0.064 | 0.064 mg/l |
| 6 Nov 2025, 09:08 | 0.037 | 0.037 mg/l |
| 16 Oct 2025, 09:02 | 0.024 | 0.024 mg/l |
| 5 Mar 2025, 09:41 | 0.021 | 0.021 mg/l |
| 5 Feb 2025, 11:02 | 0.033 | 0.033 mg/l |
| 3 Jan 2025, 11:33 | 0.033 | 0.033 mg/l |
| 4 Dec 2024, 11:07 | 0.03 | 0.03 mg/l |
| 4 Nov 2024, 11:11 | 0.033 | 0.033 mg/l |
| 4 Oct 2024, 11:21 | 0.047 | 0.047 mg/l |
| 4 Sep 2024, 10:20 | 0.013 | 0.013 mg/l |
| 12 Aug 2024, 09:34 | <0.01 | below 0.01 mg/l (not detected above this) |
| 1 Jul 2024, 08:53 | 0.044 | 0.044 mg/l |
| 10 Jun 2024, 11:05 | 0.04 | 0.04 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
556 µS/cm
Sampled 4 Sep 2026, 27 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 11:46 | 556 | 556 µS/cm |
| 1 Jul 2026, 10:20 | 681 | 681 µS/cm |
| 16 Jun 2026, 10:09 | 664 | 664 µS/cm |
| 18 May 2026, 12:23 | 628 | 628 µS/cm |
| 17 Apr 2026, 08:21 | 613 | 613 µS/cm |
| 12 Mar 2026, 11:08 | 571 | 571 µS/cm |
| 6 Feb 2026, 09:49 | 498 | 498 µS/cm |
| 8 Jan 2026, 09:43 | 632 | 632 µS/cm |
| 15 Dec 2025, 10:59 | 532 | 532 µS/cm |
| 6 Nov 2025, 09:08 | 716 | 716 µS/cm |
| 16 Oct 2025, 09:02 | 689 | 689 µS/cm |
| 3 Apr 2025, 09:36 | 668 | 668 µS/cm |
| 5 Mar 2025, 09:41 | 645 | 645 µS/cm |
| 5 Feb 2025, 11:02 | 622 | 622 µS/cm |
| 3 Jan 2025, 11:33 | 625 | 625 µS/cm |
| 4 Dec 2024, 11:07 | 604 | 604 µS/cm |
| 4 Nov 2024, 11:11 | 645 | 645 µS/cm |
| 4 Oct 2024, 11:21 | 608 | 608 µS/cm |
| 4 Sep 2024, 10:20 | 654 | 654 µS/cm |
| 12 Aug 2024, 09:34 | 657 | 657 µS/cm |
| 1 Jul 2024, 08:53 | 653 | 653 µS/cm |
| 10 Jun 2024, 11:05 | 575 | 575 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 | Jun 2024 – Sep 2026 | 95.8% 4 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 22 | Jun 2024 – Sep 2026 | 9.33 mg/l 4 Sep 2026 |
| Temperature of Water 0076 | River water | 22 | Jun 2024 – Sep 2026 | 16.5 °C 4 Sep 2026 |
| pH 0061 | River water | 22 | Jun 2024 – Sep 2026 | 8.06 4 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 21 | Jun 2024 – Sep 2026 | below 0.03 mg/l 4 Sep 2026 |
| Nitrate as N 0117 | River water | 21 | Jun 2024 – Sep 2026 | 0.912 mg/l 4 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 21 | Jun 2024 – Sep 2026 | 0.037 mg/l 4 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 22 | Jun 2024 – Sep 2026 | 556 µS/cm 4 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 21 | Jun 2024 – Sep 2026 | 160 mg/l 4 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 21 | Jun 2024 – Sep 2026 | below 0.00088 mg/l 4 Sep 2026 |
| Nitrite as N 0118 | River water | 21 | Jun 2024 – Sep 2026 | 0.028 mg/l 4 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 21 | Jun 2024 – Sep 2026 | 0.94 mg/l 4 Sep 2026 |
| No flow /No sample 7668 | River water | 1 | Aug 2026 – Aug 2026 | No flow/discharge at sampling point 18 Aug 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.