Back Stream at Abv B Lyd SW
EA name: BACK STREAM AT ABV B LYD SW (also listed as “BACK ST ABOVE BISHOPS LYDEARD SW”)
Environment Agency sampling point SW-E1382300 · 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
- 8 May 2026, 08:265 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
- 25 since 21 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 318208, 128754As published, to the nearest 1 m. Open in a map
- River, by its own name
- Back Stream
- River, by the map
- Back StreamPlaced on the river its name gives, 34 m from the line.
- Next gauge downstream
- Halsewater On the Halse Water · 5.7 km along the river
- Why it was sampled
- Monitoring (national agency policy) (25 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
97.8%
Sampled 8 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 May 2026, 08:26 | 97.8 | 97.8% |
| 21 Apr 2026, 12:13 | 109.9 | 109.9% |
| 7 Apr 2026, 14:21 | 115.1 | 115.1% |
| 2 Mar 2026, 08:44 | 98.9 | 98.9% |
| 5 Feb 2026, 10:54 | 97.1 | 97.1% |
| 20 Jan 2026, 11:47 | 100.5 | 100.5% |
| 2 Dec 2025, 10:56 | 95.8 | 95.8% |
| 13 Nov 2025, 14:34 | 93.8 | 93.8% |
| 1 Oct 2025, 15:21 | 100.9 | 100.9% |
| 4 Sep 2025, 09:34 | 97.6 | 97.6% |
| 5 Aug 2025, 09:10 | 96.5 | 96.5% |
| 15 Jul 2025, 11:45 | 99.6 | 99.6% |
| 26 Jun 2025, 14:04 | 103.3 | 103.3% |
| 29 May 2025, 15:57 | 104.1 | 104.1% |
| 8 Apr 2025, 11:22 | 122.2 | 122.2% |
| 6 Mar 2025, 09:51 | 102.5 | 102.5% |
| 20 Feb 2025, 11:54 | 101.9 | 101.9% |
| 22 Jan 2025, 09:49 | 98.7 | 98.7% |
| 3 Dec 2024, 09:58 | 97.8 | 97.8% |
| 21 Nov 2024, 08:57 | 99.4 | 99.4% |
| 16 Oct 2024, 15:49 | 97.2 | 97.2% |
| 16 Sep 2024, 14:35 | 101.7 | 101.7% |
| 29 Aug 2024, 09:14 | 96.6 | 96.6% |
| 18 Jul 2024, 09:54 | 102.5 | 102.5% |
| 21 Jun 2024, 10:31 | 100.4 | 100.4% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.6 mg/l
Sampled 8 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 May 2026, 08:26 | 10.6 | 10.6 mg/l |
| 21 Apr 2026, 12:13 | 12.2 | 12.2 mg/l |
| 7 Apr 2026, 14:21 | 12 | 12 mg/l |
| 2 Mar 2026, 08:44 | 11.2 | 11.2 mg/l |
| 5 Feb 2026, 10:54 | 11.2 | 11.2 mg/l |
| 20 Jan 2026, 11:47 | 11.8 | 11.8 mg/l |
| 2 Dec 2025, 10:56 | 11.2 | 11.2 mg/l |
| 13 Nov 2025, 14:34 | 9.93 | 9.93 mg/l |
| 1 Oct 2025, 15:21 | 10.3 | 10.3 mg/l |
| 4 Sep 2025, 09:34 | 9.99 | 9.99 mg/l |
| 5 Aug 2025, 09:10 | 9.79 | 9.79 mg/l |
| 15 Jul 2025, 11:45 | 9.89 | 9.89 mg/l |
| 26 Jun 2025, 14:04 | 10 | 10 mg/l |
| 29 May 2025, 15:57 | 10.2 | 10.2 mg/l |
| 8 Apr 2025, 11:22 | 13.8 | 13.8 mg/l |
| 6 Mar 2025, 09:51 | 12.2 | 12.2 mg/l |
| 20 Feb 2025, 11:54 | 11.3 | 11.3 mg/l |
| 22 Jan 2025, 09:49 | 11.9 | 11.9 mg/l |
| 3 Dec 2024, 09:58 | 11.4 | 11.4 mg/l |
| 21 Nov 2024, 08:57 | 12.4 | 12.4 mg/l |
| 16 Oct 2024, 15:49 | 9.86 | 9.86 mg/l |
| 16 Sep 2024, 14:35 | 10.4 | 10.4 mg/l |
| 29 Aug 2024, 09:14 | 10.1 | 10.1 mg/l |
| 18 Jul 2024, 09:54 | 10.4 | 10.4 mg/l |
| 21 Jun 2024, 10:31 | 10.3 | 10.3 mg/l |
Water temperature
code 0076 · °C
11.6 °C
Sampled 8 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 May 2026, 08:26 | 11.6 | 11.6 °C |
| 21 Apr 2026, 12:13 | 10.5 | 10.5 °C |
| 7 Apr 2026, 14:21 | 13.5 | 13.5 °C |
| 2 Mar 2026, 08:44 | 9.7 | 9.7 °C |
| 5 Feb 2026, 10:54 | 8.9 | 8.9 °C |
| 20 Jan 2026, 11:47 | 8.2 | 8.2 °C |
| 2 Dec 2025, 10:56 | 8.3 | 8.3 °C |
| 13 Nov 2025, 14:34 | 12.7 | 12.7 °C |
| 1 Oct 2025, 15:21 | 14.2 | 14.2 °C |
| 4 Sep 2025, 09:34 | 14.2 | 14.2 °C |
| 5 Aug 2025, 09:10 | 14.6 | 14.6 °C |
| 15 Jul 2025, 11:45 | 15.6 | 15.6 °C |
| 26 Jun 2025, 14:04 | 16.7 | 16.7 °C |
| 29 May 2025, 15:57 | 16.2 | 16.2 °C |
| 8 Apr 2025, 11:22 | 10 | 10 °C |
| 6 Mar 2025, 09:51 | 7.9 | 7.9 °C |
| 20 Feb 2025, 11:54 | 10.7 | 10.7 °C |
| 22 Jan 2025, 09:49 | 7.3 | 7.3 °C |
| 3 Dec 2024, 09:58 | 8.6 | 8.6 °C |
| 21 Nov 2024, 08:57 | 5.9 | 5.9 °C |
| 16 Oct 2024, 15:49 | 14.6 | 14.6 °C |
| 16 Sep 2024, 14:35 | 14.4 | 14.4 °C |
| 29 Aug 2024, 09:14 | 13.1 | 13.1 °C |
| 18 Jul 2024, 09:54 | 14.5 | 14.5 °C |
| 21 Jun 2024, 10:31 | 14 | 14 °C |
pH
code 0061
8.21
Sampled 8 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 May 2026, 08:26 | 8.21 | 8.21 |
| 21 Apr 2026, 12:13 | 8.44 | 8.44 |
| 7 Apr 2026, 14:21 | 8.39 | 8.39 |
| 2 Mar 2026, 08:44 | 8.04 | 8.04 |
| 5 Feb 2026, 10:54 | 7.83 | 7.83 |
| 20 Jan 2026, 11:47 | 8.13 | 8.13 |
| 2 Dec 2025, 10:56 | 7.81 | 7.81 |
| 13 Nov 2025, 14:34 | 8.07 | 8.07 |
| 1 Oct 2025, 15:21 | 8.46 | 8.46 |
| 4 Sep 2025, 09:34 | 8.22 | 8.22 |
| 5 Aug 2025, 09:10 | 8.31 | 8.31 |
| 15 Jul 2025, 11:45 | 7.99 | 7.99 |
| 26 Jun 2025, 14:04 | 8.36 | 8.36 |
| 29 May 2025, 15:57 | 8.38 | 8.38 |
| 8 Apr 2025, 11:22 | 8.58 | 8.58 |
| 6 Mar 2025, 09:51 | 8.27 | 8.27 |
| 20 Feb 2025, 11:54 | 8.18 | 8.18 |
| 22 Jan 2025, 09:49 | 8.21 | 8.21 |
| 3 Dec 2024, 09:58 | 8.18 | 8.18 |
| 21 Nov 2024, 08:57 | 8.2 | 8.2 |
| 16 Oct 2024, 15:49 | 7.74 | 7.74 |
| 16 Sep 2024, 14:35 | 8.38 | 8.38 |
| 29 Aug 2024, 09:14 | 8.35 | 8.35 |
| 18 Jul 2024, 09:54 | 8.27 | 8.27 |
| 21 Jun 2024, 10:31 | 8.36 | 8.36 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 8 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 May 2026, 08:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Apr 2026, 12:13 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Mar 2026, 08:44 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Feb 2026, 10:54 | 0.04 | 0.04 mg/l |
| 20 Jan 2026, 11:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Dec 2025, 10:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Nov 2025, 14:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Oct 2025, 15:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Sep 2025, 09:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Aug 2025, 09:10 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Jul 2025, 11:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Jun 2025, 14:04 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 May 2025, 15:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Apr 2025, 11:22 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Mar 2025, 09:51 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Feb 2025, 11:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Jan 2025, 09:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Dec 2024, 09:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Nov 2024, 08:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Oct 2024, 15:49 | 0.067 | 0.067 mg/l |
| 16 Sep 2024, 14:35 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 Aug 2024, 09:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Jul 2024, 09:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Jun 2024, 10:31 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
5.68 mg/l
Sampled 8 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 May 2026, 08:26 | 5.68 | 5.68 mg/l |
| 21 Apr 2026, 12:13 | 5.69 | 5.69 mg/l |
| 2 Mar 2026, 08:44 | 5.09 | 5.09 mg/l |
| 5 Feb 2026, 10:54 | 4.29 | 4.29 mg/l |
| 20 Jan 2026, 11:47 | 5.39 | 5.39 mg/l |
| 2 Dec 2025, 10:56 | 6.49 | 6.49 mg/l |
| 13 Nov 2025, 14:34 | 8.87 | 8.87 mg/l |
| 1 Oct 2025, 15:21 | 5.4 | 5.4 mg/l |
| 4 Sep 2025, 09:34 | 4.69 | 4.69 mg/l |
| 5 Aug 2025, 09:10 | 5.29 | 5.29 mg/l |
| 15 Jul 2025, 11:45 | 5.49 | 5.49 mg/l |
| 26 Jun 2025, 14:04 | 5.28 | 5.28 mg/l |
| 29 May 2025, 15:57 | 5.67 | 5.67 mg/l |
| 8 Apr 2025, 11:22 | 5.59 | 5.59 mg/l |
| 6 Mar 2025, 09:51 | 5.59 | 5.59 mg/l |
| 20 Feb 2025, 11:54 | 5.18 | 5.18 mg/l |
| 22 Jan 2025, 09:49 | 5.49 | 5.49 mg/l |
| 3 Dec 2024, 09:58 | 4.79 | 4.79 mg/l |
| 21 Nov 2024, 08:57 | 4.79 | 4.79 mg/l |
| 16 Oct 2024, 15:49 | 3.88 | 3.88 mg/l |
| 16 Sep 2024, 14:35 | 5.79 | 5.79 mg/l |
| 29 Aug 2024, 09:14 | 5.59 | 5.59 mg/l |
| 18 Jul 2024, 09:54 | 5.98 | 5.98 mg/l |
| 21 Jun 2024, 10:31 | 5.78 | 5.78 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.1 mg/l
Sampled 8 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 May 2026, 08:26 | 0.1 | 0.1 mg/l |
| 21 Apr 2026, 12:13 | 0.085 | 0.085 mg/l |
| 2 Mar 2026, 08:44 | 0.088 | 0.088 mg/l |
| 5 Feb 2026, 10:54 | 0.11 | 0.11 mg/l |
| 20 Jan 2026, 11:47 | 0.097 | 0.097 mg/l |
| 2 Dec 2025, 10:56 | 0.13 | 0.13 mg/l |
| 13 Nov 2025, 14:34 | 0.13 | 0.13 mg/l |
| 1 Oct 2025, 15:21 | 0.11 | 0.11 mg/l |
| 4 Sep 2025, 09:34 | 0.17 | 0.17 mg/l |
| 5 Aug 2025, 09:10 | 0.1 | 0.1 mg/l |
| 15 Jul 2025, 11:45 | 0.12 | 0.12 mg/l |
| 26 Jun 2025, 14:04 | 0.12 | 0.12 mg/l |
| 29 May 2025, 15:57 | 0.12 | 0.12 mg/l |
| 8 Apr 2025, 11:22 | 0.073 | 0.073 mg/l |
| 6 Mar 2025, 09:51 | 0.077 | 0.077 mg/l |
| 20 Feb 2025, 11:54 | 0.077 | 0.077 mg/l |
| 22 Jan 2025, 09:49 | 0.085 | 0.085 mg/l |
| 3 Dec 2024, 09:58 | 0.086 | 0.086 mg/l |
| 21 Nov 2024, 08:57 | 0.097 | 0.097 mg/l |
| 16 Oct 2024, 15:49 | 0.13 | 0.13 mg/l |
| 16 Sep 2024, 14:35 | 0.11 | 0.11 mg/l |
| 29 Aug 2024, 09:14 | 0.11 | 0.11 mg/l |
| 18 Jul 2024, 09:54 | 0.099 | 0.099 mg/l |
| 21 Jun 2024, 10:31 | 0.1 | 0.1 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
562 µS/cm
Sampled 8 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 May 2026, 08:26 | 562 | 562 µS/cm |
| 21 Apr 2026, 12:13 | 549 | 549 µS/cm |
| 7 Apr 2026, 14:21 | 544 | 544 µS/cm |
| 2 Mar 2026, 08:44 | 495 | 495 µS/cm |
| 5 Feb 2026, 10:54 | 428 | 428 µS/cm |
| 20 Jan 2026, 11:47 | 489 | 489 µS/cm |
| 2 Dec 2025, 10:56 | 419 | 419 µS/cm |
| 13 Nov 2025, 14:34 | 531 | 531 µS/cm |
| 1 Oct 2025, 15:21 | 552 | 552 µS/cm |
| 4 Sep 2025, 09:34 | 501 | 501 µS/cm |
| 5 Aug 2025, 09:10 | 551 | 551 µS/cm |
| 15 Jul 2025, 11:45 | 578 | 578 µS/cm |
| 26 Jun 2025, 14:04 | 556 | 556 µS/cm |
| 29 May 2025, 15:57 | 559 | 559 µS/cm |
| 8 Apr 2025, 11:22 | 556 | 556 µS/cm |
| 6 Mar 2025, 09:51 | 544 | 544 µS/cm |
| 20 Feb 2025, 11:54 | 554 | 554 µS/cm |
| 22 Jan 2025, 09:49 | 550 | 550 µS/cm |
| 3 Dec 2024, 09:58 | 483 | 483 µS/cm |
| 21 Nov 2024, 08:57 | 493 | 493 µS/cm |
| 16 Oct 2024, 15:49 | 307 | 307 µS/cm |
| 16 Sep 2024, 14:35 | 559 | 559 µS/cm |
| 29 Aug 2024, 09:14 | 587 | 587 µS/cm |
| 18 Jul 2024, 09:54 | 564 | 564 µS/cm |
| 21 Jun 2024, 10:31 | 558 | 558 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 | 25 | Jun 2024 – May 2026 | 97.8% 8 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 25 | Jun 2024 – May 2026 | 10.6 mg/l 8 May 2026 |
| Temperature of Water 0076 | River water | 25 | Jun 2024 – May 2026 | 11.6 °C 8 May 2026 |
| pH 0061 | River water | 25 | Jun 2024 – May 2026 | 8.21 8 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 24 | Jun 2024 – May 2026 | below 0.03 mg/l 8 May 2026 |
| Nitrate as N 0117 | River water | 24 | Jun 2024 – May 2026 | 5.68 mg/l 8 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 24 | Jun 2024 – May 2026 | 0.1 mg/l 8 May 2026 |
| Conductivity at 25 C 0077 | River water | 25 | Jun 2024 – May 2026 | 562 µS/cm 8 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 24 | Jun 2024 – May 2026 | 240 mg/l 8 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 24 | Jun 2024 – May 2026 | below 0.00062 mg/l 8 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 24 | Jun 2024 – May 2026 | below 1 mg/l 8 May 2026 |
| Nitrite as N 0118 | River water | 24 | Jun 2024 – May 2026 | 0.018 mg/l 8 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 24 | Jun 2024 – May 2026 | 5.7 mg/l 8 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.