Blyth at Thornyford Bridge
EA name: BLYTH AT THORNYFORD BRIDGE
Environment Agency sampling point NE-42600005 · 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
- 14 May 2026, 13:415 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
- 24 since 18 Jun 2024 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 415594, 577284As published, to the nearest 1 m. Open in a map
- River, by its own name
- Blyth
- River, by the map
- River BlythPlaced on the river its name gives, 0 m from the line.
- Next gauge downstream
- Hartford Bridge On the River Blyth · 13 km along the river
- Why it was sampled
- Monitoring (national agency policy) (24 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
122.3%
Sampled 14 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 May 2026, 13:41 | 122.3 | 122.3% |
| 9 Apr 2026, 08:56 | 98.6 | 98.6% |
| 5 Mar 2026, 09:01 | 97.1 | 97.1% |
| 3 Feb 2026, 08:17 | 97.7 | 97.7% |
| 2 Jan 2026, 11:39 | 102.1 | 102.1% |
| 1 Dec 2025, 09:53 | 97.4 | 97.4% |
| 5 Nov 2025, 13:37 | 92.4 | 92.4% |
| 1 Oct 2025, 09:40 | 83.2 | 83.2% |
| 1 Sep 2025, 08:43 | 65.8 | 65.8% |
| 6 Aug 2025, 11:36 | 80.8 | 80.8% |
| 8 Jul 2025, 10:32 | 75.4 | 75.4% |
| 2 Jun 2025, 09:55 | 68.9 | 68.9% |
| 9 May 2025, 12:53 | 128.5 | 128.5% |
| 2 Apr 2025, 10:18 | 105.2 | 105.2% |
| 3 Mar 2025, 12:40 | 108 | 108% |
| 4 Feb 2025, 11:31 | 101.9 | 101.9% |
| 21 Jan 2025, 10:07 | 99.1 | 99.1% |
| 4 Dec 2024, 12:34 | 101.2 | 101.2% |
| 18 Nov 2024, 11:16 | 100.7 | 100.7% |
| 16 Oct 2024, 10:09 | 99.2 | 99.2% |
| 16 Sep 2024, 10:08 | 89.3 | 89.3% |
| 22 Aug 2024, 10:43 | 98.1 | 98.1% |
| 16 Jul 2024, 11:58 | 102.9 | 102.9% |
| 18 Jun 2024, 10:14 | 96 | 96% |
Dissolved oxygen
as O2 · code 9924 · mg/l
13.7 mg/l
Sampled 14 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 May 2026, 13:41 | 13.7 | 13.7 mg/l |
| 9 Apr 2026, 08:56 | 11 | 11 mg/l |
| 5 Mar 2026, 09:01 | 12 | 12 mg/l |
| 3 Feb 2026, 08:17 | 12.5 | 12.5 mg/l |
| 2 Jan 2026, 11:39 | 14.4 | 14.4 mg/l |
| 1 Dec 2025, 09:53 | 12 | 12 mg/l |
| 5 Nov 2025, 13:37 | 9.98 | 9.98 mg/l |
| 1 Oct 2025, 09:40 | 9.05 | 9.05 mg/l |
| 1 Sep 2025, 08:43 | 6.79 | 6.79 mg/l |
| 6 Aug 2025, 11:36 | 8.31 | 8.31 mg/l |
| 8 Jul 2025, 10:32 | 7.84 | 7.84 mg/l |
| 2 Jun 2025, 09:55 | 7.24 | 7.24 mg/l |
| 9 May 2025, 12:53 | 14 | 14 mg/l |
| 2 Apr 2025, 10:18 | 12.6 | 12.6 mg/l |
| 3 Mar 2025, 12:40 | 13.1 | 13.1 mg/l |
| 4 Feb 2025, 11:31 | 12.6 | 12.6 mg/l |
| 21 Jan 2025, 10:07 | 13.1 | 13.1 mg/l |
| 4 Dec 2024, 12:34 | 12.8 | 12.8 mg/l |
| 18 Nov 2024, 11:16 | 13.5 | 13.5 mg/l |
| 16 Oct 2024, 10:09 | 11 | 11 mg/l |
| 16 Sep 2024, 10:08 | 9.83 | 9.83 mg/l |
| 22 Aug 2024, 10:43 | 9.91 | 9.91 mg/l |
| 16 Jul 2024, 11:58 | 10.3 | 10.3 mg/l |
| 18 Jun 2024, 10:14 | 10 | 10 mg/l |
Water temperature
code 0076 · °C
10.3 °C
Sampled 14 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 May 2026, 13:41 | 10.3 | 10.3 °C |
| 9 Apr 2026, 08:56 | 10.4 | 10.4 °C |
| 5 Mar 2026, 09:01 | 6.2 | 6.2 °C |
| 3 Feb 2026, 08:17 | 5 | 5 °C |
| 2 Jan 2026, 11:39 | 1.3 | 1.3 °C |
| 1 Dec 2025, 09:53 | 6.5 | 6.5 °C |
| 5 Nov 2025, 13:37 | 11.8 | 11.8 °C |
| 1 Oct 2025, 09:40 | 11.5 | 11.5 °C |
| 1 Sep 2025, 08:43 | 13.8 | 13.8 °C |
| 6 Aug 2025, 11:36 | 14 | 14 °C |
| 8 Jul 2025, 10:32 | 13.5 | 13.5 °C |
| 2 Jun 2025, 09:55 | 13 | 13 °C |
| 9 May 2025, 12:53 | 11.4 | 11.4 °C |
| 2 Apr 2025, 10:18 | 7.4 | 7.4 °C |
| 3 Mar 2025, 12:40 | 7 | 7 °C |
| 4 Feb 2025, 11:31 | 6.2 | 6.2 °C |
| 21 Jan 2025, 10:07 | 3.5 | 3.5 °C |
| 4 Dec 2024, 12:34 | 5.3 | 5.3 °C |
| 18 Nov 2024, 11:16 | 3.2 | 3.2 °C |
| 16 Oct 2024, 10:09 | 10.5 | 10.5 °C |
| 16 Sep 2024, 10:08 | 11 | 11 °C |
| 22 Aug 2024, 10:43 | 14.8 | 14.8 °C |
| 16 Jul 2024, 11:58 | 15 | 15 °C |
| 18 Jun 2024, 10:14 | 13.2 | 13.2 °C |
pH
code 0061
8.67
Sampled 14 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 May 2026, 13:41 | 8.67 | 8.67 |
| 9 Apr 2026, 08:56 | 8.45 | 8.45 |
| 5 Mar 2026, 09:01 | 8.33 | 8.33 |
| 3 Feb 2026, 08:17 | 8.08 | 8.08 |
| 2 Jan 2026, 11:39 | 8.4 | 8.4 |
| 1 Dec 2025, 09:53 | 8.78 | 8.78 |
| 5 Nov 2025, 13:37 | 8.25 | 8.25 |
| 1 Oct 2025, 09:40 | 7.94 | 7.94 |
| 1 Sep 2025, 08:43 | 7.91 | 7.91 |
| 6 Aug 2025, 11:36 | 8.11 | 8.11 |
| 8 Jul 2025, 10:32 | 8.17 | 8.17 |
| 2 Jun 2025, 09:55 | 8.09 | 8.09 |
| 9 May 2025, 12:53 | 8.51 | 8.51 |
| 2 Apr 2025, 10:18 | 8.48 | 8.48 |
| 3 Mar 2025, 12:40 | 8.53 | 8.53 |
| 4 Feb 2025, 11:31 | 8.41 | 8.41 |
| 21 Jan 2025, 10:07 | 8.31 | 8.31 |
| 4 Dec 2024, 12:34 | 8.24 | 8.24 |
| 18 Nov 2024, 11:16 | 8.55 | 8.55 |
| 16 Oct 2024, 10:09 | 8.38 | 8.38 |
| 16 Sep 2024, 10:08 | 8.22 | 8.22 |
| 22 Aug 2024, 10:43 | 8.18 | 8.18 |
| 16 Jul 2024, 11:58 | 8.22 | 8.22 |
| 18 Jun 2024, 10:14 | 8.3 | 8.3 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 14 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 May 2026, 13:41 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Apr 2026, 08:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Mar 2026, 09:01 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Feb 2026, 08:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Jan 2026, 11:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Dec 2025, 09:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Nov 2025, 13:37 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Oct 2025, 09:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Sep 2025, 08:43 | 0.035 | 0.035 mg/l |
| 6 Aug 2025, 11:36 | 0.044 | 0.044 mg/l |
| 8 Jul 2025, 10:32 | 0.036 | 0.036 mg/l |
| 2 Jun 2025, 09:55 | 0.068 | 0.068 mg/l |
| 9 May 2025, 12:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Apr 2025, 10:18 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Mar 2025, 12:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Feb 2025, 11:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Jan 2025, 10:07 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Dec 2024, 12:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Nov 2024, 11:16 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Oct 2024, 10:09 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Sep 2024, 10:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Aug 2024, 10:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Jul 2024, 11:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Jun 2024, 10:14 | 0.045 | 0.045 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.09 mg/l
Sampled 14 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 May 2026, 13:41 | 1.09 | 1.09 mg/l |
| 9 Apr 2026, 08:56 | 1.59 | 1.59 mg/l |
| 5 Mar 2026, 09:01 | 3.19 | 3.19 mg/l |
| 3 Feb 2026, 08:17 | 4.19 | 4.19 mg/l |
| 2 Jan 2026, 11:39 | 3.79 | 3.79 mg/l |
| 1 Dec 2025, 09:53 | 4.6 | 4.6 mg/l |
| 5 Nov 2025, 13:37 | 2.49 | 2.49 mg/l |
| 1 Oct 2025, 09:40 | 0.416 | 0.416 mg/l |
| 1 Sep 2025, 08:43 | <0.196 | below 0.196 mg/l (not detected above this) |
| 6 Aug 2025, 11:36 | <0.196 | below 0.196 mg/l (not detected above this) |
| 8 Jul 2025, 10:32 | 0.415 | 0.415 mg/l |
| 2 Jun 2025, 09:55 | 0.459 | 0.459 mg/l |
| 9 May 2025, 12:53 | 0.622 | 0.622 mg/l |
| 2 Apr 2025, 10:18 | 1.29 | 1.29 mg/l |
| 3 Mar 2025, 12:40 | 2.39 | 2.39 mg/l |
| 4 Feb 2025, 11:31 | 3.09 | 3.09 mg/l |
| 21 Jan 2025, 10:07 | 2.89 | 2.89 mg/l |
| 4 Dec 2024, 12:34 | 3.19 | 3.19 mg/l |
| 18 Nov 2024, 11:16 | 2.2 | 2.2 mg/l |
| 16 Oct 2024, 10:09 | 3.39 | 3.39 mg/l |
| 16 Sep 2024, 10:08 | 0.996 | 0.996 mg/l |
| 22 Aug 2024, 10:43 | 0.696 | 0.696 mg/l |
| 16 Jul 2024, 11:58 | 1.49 | 1.49 mg/l |
| 18 Jun 2024, 10:14 | 1.68 | 1.68 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.011 mg/l
Sampled 14 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 May 2026, 13:41 | 0.011 | 0.011 mg/l |
| 9 Apr 2026, 08:56 | <0.01 | below 0.01 mg/l (not detected above this) |
| 5 Mar 2026, 09:01 | 0.02 | 0.02 mg/l |
| 3 Feb 2026, 08:17 | 0.021 | 0.021 mg/l |
| 2 Jan 2026, 11:39 | 0.024 | 0.024 mg/l |
| 1 Dec 2025, 09:53 | 0.045 | 0.045 mg/l |
| 5 Nov 2025, 13:37 | 0.041 | 0.041 mg/l |
| 1 Oct 2025, 09:40 | 0.025 | 0.025 mg/l |
| 1 Sep 2025, 08:43 | 0.031 | 0.031 mg/l |
| 6 Aug 2025, 11:36 | 0.038 | 0.038 mg/l |
| 8 Jul 2025, 10:32 | 0.04 | 0.04 mg/l |
| 2 Jun 2025, 09:55 | 0.041 | 0.041 mg/l |
| 9 May 2025, 12:53 | 0.015 | 0.015 mg/l |
| 2 Apr 2025, 10:18 | <0.01 | below 0.01 mg/l (not detected above this) |
| 3 Mar 2025, 12:40 | 0.011 | 0.011 mg/l |
| 4 Feb 2025, 11:31 | 0.017 | 0.017 mg/l |
| 21 Jan 2025, 10:07 | 0.021 | 0.021 mg/l |
| 4 Dec 2024, 12:34 | 0.017 | 0.017 mg/l |
| 18 Nov 2024, 11:16 | 0.021 | 0.021 mg/l |
| 16 Oct 2024, 10:09 | 0.025 | 0.025 mg/l |
| 16 Sep 2024, 10:08 | 0.025 | 0.025 mg/l |
| 22 Aug 2024, 10:43 | 0.022 | 0.022 mg/l |
| 16 Jul 2024, 11:58 | 0.033 | 0.033 mg/l |
| 18 Jun 2024, 10:14 | 0.021 | 0.021 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
494 µS/cm
Sampled 14 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 May 2026, 13:41 | 494 | 494 µS/cm |
| 9 Apr 2026, 08:56 | 465 | 465 µS/cm |
| 5 Mar 2026, 09:01 | 477 | 477 µS/cm |
| 3 Feb 2026, 08:17 | 419 | 419 µS/cm |
| 2 Jan 2026, 11:39 | 512 | 512 µS/cm |
| 1 Dec 2025, 09:53 | 392 | 392 µS/cm |
| 5 Nov 2025, 13:37 | 527 | 527 µS/cm |
| 1 Oct 2025, 09:40 | 577 | 577 µS/cm |
| 1 Sep 2025, 08:43 | 601 | 601 µS/cm |
| 6 Aug 2025, 11:36 | 551 | 551 µS/cm |
| 8 Jul 2025, 10:32 | 740 | 740 µS/cm |
| 2 Jun 2025, 09:55 | 601 | 601 µS/cm |
| 9 May 2025, 12:53 | 61 | 61 µS/cm |
| 2 Apr 2025, 10:18 | 524 | 524 µS/cm |
| 3 Mar 2025, 12:40 | 521 | 521 µS/cm |
| 4 Feb 2025, 11:31 | 531 | 531 µS/cm |
| 21 Jan 2025, 10:07 | 506 | 506 µS/cm |
| 4 Dec 2024, 12:34 | 561 | 561 µS/cm |
| 18 Nov 2024, 11:16 | 540 | 540 µS/cm |
| 16 Oct 2024, 10:09 | 560 | 560 µS/cm |
| 16 Sep 2024, 10:08 | 542 | 542 µS/cm |
| 22 Aug 2024, 10:43 | 538 | 538 µS/cm |
| 16 Jul 2024, 11:58 | 475 | 475 µS/cm |
| 18 Jun 2024, 10:14 | 485 | 485 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 | 24 | Jun 2024 – May 2026 | 122.3% 14 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 24 | Jun 2024 – May 2026 | 13.7 mg/l 14 May 2026 |
| Temperature of Water 0076 | River water | 24 | Jun 2024 – May 2026 | 10.3 °C 14 May 2026 |
| pH 0061 | River water | 24 | Jun 2024 – May 2026 | 8.67 14 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 24 | Jun 2024 – May 2026 | below 0.03 mg/l 14 May 2026 |
| Nitrate as N 0117 | River water | 24 | Jun 2024 – May 2026 | 1.09 mg/l 14 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 24 | Jun 2024 – May 2026 | 0.011 mg/l 14 May 2026 |
| Conductivity at 25 C 0077 | River water | 24 | Jun 2024 – May 2026 | 494 µS/cm 14 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 24 | Jun 2024 – May 2026 | 180 mg/l 14 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 24 | Jun 2024 – May 2026 | below 0.00056 mg/l 14 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 23 | Jun 2024 – May 2026 | 1.8 mg/l 14 May 2026 |
| Nitrite as N 0118 | River water | 24 | Jun 2024 – May 2026 | 0.0063 mg/l 14 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 24 | Jun 2024 – May 2026 | 1.1 mg/l 14 May 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.