Yarcombe Stream upstream of Yarcombe sewage treatment works
EA name: YARCOMBE STREAM U/S YARCOMBE STW (also listed as “YARCOMBE STREAM ABOVE YARCOMBE STW”)
Environment Agency sampling point SW-70241255 · 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
- 11 May 2026, 13:165 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
- 23 since 26 Jul 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 324730, 108000As published, to the nearest 10 m. Open in a map
- River, by its own name
- Yarcombe Stream
- River, by the map
- Not placedNearest line is 170 m away and its name does not agree. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (23 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
101%
Sampled 11 May 2026, 5 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 13:16 | 101 | 101% |
| 21 Apr 2026, 11:06 | 109.4 | 109.4% |
| 10 Mar 2026, 12:18 | 103.9 | 103.9% |
| 5 Feb 2026, 13:13 | 97.1 | 97.1% |
| 22 Jan 2026, 11:13 | 97.3 | 97.3% |
| 3 Dec 2025, 11:31 | 98.8 | 98.8% |
| 11 Nov 2025, 11:00 | 89.3 | 89.3% |
| 16 Oct 2025, 11:39 | 91.6 | 91.6% |
| 18 Sep 2025, 10:20 | 92.7 | 92.7% |
| 5 Aug 2025, 10:00 | 62.5 | 62.5% |
| 22 Jul 2025, 09:13 | 67.8 | 67.8% |
| 14 May 2025, 10:33 | 103.4 | 103.4% |
| 8 Apr 2025, 10:52 | 101.3 | 101.3% |
| 17 Mar 2025, 12:36 | 104.1 | 104.1% |
| 28 Feb 2025, 11:44 | 97.4 | 97.4% |
| 3 Feb 2025, 12:08 | 96.4 | 96.4% |
| 20 Jan 2025, 14:07 | 107.1 | 107.1% |
| 9 Dec 2024, 11:03 | 98.7 | 98.7% |
| 25 Nov 2024, 10:49 | 98 | 98% |
| 23 Aug 2024, 12:24 | 70.5 | 70.5% |
| 31 Jul 2024, 10:39 | 69.9 | 69.9% |
| 26 Jul 2024, 11:40 | 86.6 | 86.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.3 mg/l
Sampled 11 May 2026, 5 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 13:16 | 10.3 | 10.3 mg/l |
| 21 Apr 2026, 11:06 | 12.2 | 12.2 mg/l |
| 10 Mar 2026, 12:18 | 11.8 | 11.8 mg/l |
| 5 Feb 2026, 13:13 | 11.4 | 11.4 mg/l |
| 22 Jan 2026, 11:13 | 11.4 | 11.4 mg/l |
| 3 Dec 2025, 11:31 | 11.7 | 11.7 mg/l |
| 11 Nov 2025, 11:00 | 9.45 | 9.45 mg/l |
| 16 Oct 2025, 11:39 | 9.74 | 9.74 mg/l |
| 18 Sep 2025, 10:20 | 8.99 | 8.99 mg/l |
| 5 Aug 2025, 10:00 | 6.26 | 6.26 mg/l |
| 22 Jul 2025, 09:13 | 6.48 | 6.48 mg/l |
| 14 May 2025, 10:33 | 10.6 | 10.6 mg/l |
| 8 Apr 2025, 10:52 | 11.5 | 11.5 mg/l |
| 17 Mar 2025, 12:36 | 12.5 | 12.5 mg/l |
| 28 Feb 2025, 11:44 | 11.4 | 11.4 mg/l |
| 3 Feb 2025, 12:08 | 11.3 | 11.3 mg/l |
| 20 Jan 2025, 14:07 | 12.9 | 12.9 mg/l |
| 9 Dec 2024, 11:03 | 11.9 | 11.9 mg/l |
| 25 Nov 2024, 10:49 | 11.1 | 11.1 mg/l |
| 23 Aug 2024, 12:24 | 6.78 | 6.78 mg/l |
| 31 Jul 2024, 10:39 | 6.57 | 6.57 mg/l |
| 26 Jul 2024, 11:40 | 8.38 | 8.38 mg/l |
Water temperature
code 0076 · °C
14.5 °C
Sampled 11 May 2026, 5 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 13:16 | 14.5 | 14.5 °C |
| 21 Apr 2026, 11:06 | 10.4 | 10.4 °C |
| 10 Mar 2026, 12:18 | 9.8 | 9.8 °C |
| 5 Feb 2026, 13:13 | 8.4 | 8.4 °C |
| 22 Jan 2026, 11:13 | 8.2 | 8.2 °C |
| 3 Dec 2025, 11:31 | 8.1 | 8.1 °C |
| 11 Nov 2025, 11:00 | 12.7 | 12.7 °C |
| 16 Oct 2025, 11:39 | 12.5 | 12.5 °C |
| 18 Sep 2025, 10:20 | 16.7 | 16.7 °C |
| 5 Aug 2025, 10:00 | 15.2 | 15.2 °C |
| 22 Jul 2025, 09:13 | 17.4 | 17.4 °C |
| 14 May 2025, 10:33 | 14.3 | 14.3 °C |
| 8 Apr 2025, 10:52 | 9.6 | 9.6 °C |
| 17 Mar 2025, 12:36 | 7.4 | 7.4 °C |
| 28 Feb 2025, 11:44 | 8.4 | 8.4 °C |
| 3 Feb 2025, 12:08 | 8.4 | 8.4 °C |
| 20 Jan 2025, 14:07 | 7.2 | 7.2 °C |
| 9 Dec 2024, 11:03 | 7.3 | 7.3 °C |
| 25 Nov 2024, 10:49 | 9.9 | 9.9 °C |
| 23 Aug 2024, 12:24 | 17.1 | 17.1 °C |
| 31 Jul 2024, 10:39 | 18.2 | 18.2 °C |
| 26 Jul 2024, 11:40 | 16.8 | 16.8 °C |
pH
code 0061
7.85
Sampled 11 May 2026, 5 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 13:16 | 7.85 | 7.85 |
| 21 Apr 2026, 11:06 | 8.25 | 8.25 |
| 10 Mar 2026, 12:18 | 7.96 | 7.96 |
| 5 Feb 2026, 13:13 | 7.39 | 7.39 |
| 22 Jan 2026, 11:13 | 7.02 | 7.02 |
| 3 Dec 2025, 11:31 | 7.41 | 7.41 |
| 11 Nov 2025, 11:00 | 7.08 | 7.08 |
| 16 Oct 2025, 11:39 | 7.76 | 7.76 |
| 18 Sep 2025, 10:20 | 8.01 | 8.01 |
| 5 Aug 2025, 10:00 | 7.29 | 7.29 |
| 22 Jul 2025, 09:13 | 7.52 | 7.52 |
| 14 May 2025, 10:33 | 8.21 | 8.21 |
| 8 Apr 2025, 10:52 | 8.18 | 8.18 |
| 17 Mar 2025, 12:36 | 8.21 | 8.21 |
| 28 Feb 2025, 11:44 | 7.89 | 7.89 |
| 3 Feb 2025, 12:08 | 7.91 | 7.91 |
| 20 Jan 2025, 14:07 | 8.1 | 8.1 |
| 9 Dec 2024, 11:03 | 7.86 | 7.86 |
| 25 Nov 2024, 10:49 | 7.31 | 7.31 |
| 23 Aug 2024, 12:24 | 7.35 | 7.35 |
| 31 Jul 2024, 10:39 | 7.45 | 7.45 |
| 26 Jul 2024, 11:40 | 7.28 | 7.28 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.1 mg/l
Sampled 11 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 13:16 | 0.1 | 0.1 mg/l |
| 21 Apr 2026, 11:06 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Mar 2026, 12:18 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Feb 2026, 13:13 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Jan 2026, 11:13 | 0.046 | 0.046 mg/l |
| 3 Dec 2025, 11:31 | 0.051 | 0.051 mg/l |
| 11 Nov 2025, 11:00 | 0.036 | 0.036 mg/l |
| 16 Oct 2025, 11:39 | 0.03 | 0.03 mg/l |
| 18 Sep 2025, 10:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Aug 2025, 10:00 | 0.21 | 0.21 mg/l |
| 22 Jul 2025, 09:13 | 0.043 | 0.043 mg/l |
| 3 Jun 2025, 14:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 May 2025, 10:33 | 0.13 | 0.13 mg/l |
| 8 Apr 2025, 10:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Mar 2025, 12:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Feb 2025, 11:44 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Feb 2025, 12:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Jan 2025, 14:07 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Dec 2024, 11:03 | 0.031 | 0.031 mg/l |
| 25 Nov 2024, 10:49 | 0.045 | 0.045 mg/l |
| 23 Aug 2024, 12:24 | 0.061 | 0.061 mg/l |
| 31 Jul 2024, 10:39 | 0.093 | 0.093 mg/l |
| 26 Jul 2024, 11:40 | 0.039 | 0.039 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.33 mg/l
Sampled 11 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 13:16 | 2.33 | 2.33 mg/l |
| 21 Apr 2026, 11:06 | 2.09 | 2.09 mg/l |
| 10 Mar 2026, 12:18 | 2.6 | 2.6 mg/l |
| 5 Feb 2026, 13:13 | 3.2 | 3.2 mg/l |
| 22 Jan 2026, 11:13 | 2.4 | 2.4 mg/l |
| 3 Dec 2025, 11:31 | 9.59 | 9.59 mg/l |
| 11 Nov 2025, 11:00 | 14 | 14 mg/l |
| 16 Oct 2025, 11:39 | 1.68 | 1.68 mg/l |
| 18 Sep 2025, 10:20 | 4.48 | 4.48 mg/l |
| 5 Aug 2025, 10:00 | 1.3 | 1.3 mg/l |
| 22 Jul 2025, 09:13 | 1.06 | 1.06 mg/l |
| 3 Jun 2025, 14:43 | 2.33 | 2.33 mg/l |
| 14 May 2025, 10:33 | 2.35 | 2.35 mg/l |
| 8 Apr 2025, 10:52 | 2.3 | 2.3 mg/l |
| 17 Mar 2025, 12:36 | 2.79 | 2.79 mg/l |
| 28 Feb 2025, 11:44 | 3.5 | 3.5 mg/l |
| 3 Feb 2025, 12:08 | 3.5 | 3.5 mg/l |
| 20 Jan 2025, 14:07 | 2.9 | 2.9 mg/l |
| 9 Dec 2024, 11:03 | 3.89 | 3.89 mg/l |
| 25 Nov 2024, 10:49 | 4.79 | 4.79 mg/l |
| 23 Aug 2024, 12:24 | 1.72 | 1.72 mg/l |
| 31 Jul 2024, 10:39 | 2.15 | 2.15 mg/l |
| 26 Jul 2024, 11:40 | 2.17 | 2.17 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.11 mg/l
Sampled 11 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 13:16 | 0.11 | 0.11 mg/l |
| 21 Apr 2026, 11:06 | 0.036 | 0.036 mg/l |
| 10 Mar 2026, 12:18 | 0.047 | 0.047 mg/l |
| 5 Feb 2026, 13:13 | 0.087 | 0.087 mg/l |
| 22 Jan 2026, 11:13 | 0.22 | 0.22 mg/l |
| 3 Dec 2025, 11:31 | 0.1 | 0.1 mg/l |
| 11 Nov 2025, 11:00 | 0.069 | 0.069 mg/l |
| 16 Oct 2025, 11:39 | 0.069 | 0.069 mg/l |
| 18 Sep 2025, 10:20 | 0.065 | 0.065 mg/l |
| 5 Aug 2025, 10:00 | 0.092 | 0.092 mg/l |
| 22 Jul 2025, 09:13 | 0.088 | 0.088 mg/l |
| 3 Jun 2025, 14:43 | 0.097 | 0.097 mg/l |
| 14 May 2025, 10:33 | 0.07 | 0.07 mg/l |
| 8 Apr 2025, 10:52 | 0.036 | 0.036 mg/l |
| 17 Mar 2025, 12:36 | 0.03 | 0.03 mg/l |
| 28 Feb 2025, 11:44 | 0.047 | 0.047 mg/l |
| 3 Feb 2025, 12:08 | 0.041 | 0.041 mg/l |
| 20 Jan 2025, 14:07 | 0.039 | 0.039 mg/l |
| 9 Dec 2024, 11:03 | 0.059 | 0.059 mg/l |
| 25 Nov 2024, 10:49 | 0.13 | 0.13 mg/l |
| 23 Aug 2024, 12:24 | 0.066 | 0.066 mg/l |
| 31 Jul 2024, 10:39 | 0.077 | 0.077 mg/l |
| 26 Jul 2024, 11:40 | 0.055 | 0.055 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
317 µS/cm
Sampled 11 May 2026, 5 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 13:16 | 317 | 317 µS/cm |
| 21 Apr 2026, 11:06 | 296 | 296 µS/cm |
| 10 Mar 2026, 12:18 | 270 | 270 µS/cm |
| 5 Feb 2026, 13:13 | 203 | 203 µS/cm |
| 22 Jan 2026, 11:13 | 117 | 117 µS/cm |
| 3 Dec 2025, 11:31 | 312 | 312 µS/cm |
| 11 Nov 2025, 11:00 | 422 | 422 µS/cm |
| 16 Oct 2025, 11:39 | 297 | 297 µS/cm |
| 18 Sep 2025, 10:20 | 397 | 397 µS/cm |
| 5 Aug 2025, 10:00 | 302 | 302 µS/cm |
| 22 Jul 2025, 09:13 | 279 | 279 µS/cm |
| 14 May 2025, 10:33 | 340 | 340 µS/cm |
| 8 Apr 2025, 10:52 | 368 | 368 µS/cm |
| 17 Mar 2025, 12:36 | 302 | 302 µS/cm |
| 28 Feb 2025, 11:44 | 292 | 292 µS/cm |
| 3 Feb 2025, 12:08 | 312 | 312 µS/cm |
| 20 Jan 2025, 14:07 | 310 | 310 µS/cm |
| 9 Dec 2024, 11:03 | 300 | 300 µS/cm |
| 25 Nov 2024, 10:49 | 234 | 234 µS/cm |
| 23 Aug 2024, 12:24 | 281 | 281 µS/cm |
| 31 Jul 2024, 10:39 | 327 | 327 µS/cm |
| 26 Jul 2024, 11:40 | 299 | 299 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 | Jul 2024 – May 2026 | 101% 11 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 22 | Jul 2024 – May 2026 | 10.3 mg/l 11 May 2026 |
| Temperature of Water 0076 | River water | 22 | Jul 2024 – May 2026 | 14.5 °C 11 May 2026 |
| pH 0061 | River water | 22 | Jul 2024 – May 2026 | 7.85 11 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 23 | Jul 2024 – May 2026 | 0.1 mg/l 11 May 2026 |
| Nitrate as N 0117 | River water | 23 | Jul 2024 – May 2026 | 2.33 mg/l 11 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 23 | Jul 2024 – May 2026 | 0.11 mg/l 11 May 2026 |
| Conductivity at 25 C 0077 | River water | 22 | Jul 2024 – May 2026 | 317 µS/cm 11 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 23 | Jul 2024 – May 2026 | 99 mg/l 11 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 22 | Jul 2024 – May 2026 | 0.00181 mg/l 11 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 21 | Jul 2024 – May 2026 | 3.9 mg/l 11 May 2026 |
| Nitrite as N 0118 | River water | 23 | Jul 2024 – May 2026 | 0.069 mg/l 11 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 23 | Jul 2024 – May 2026 | 2.4 mg/l 11 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.