Withey Brook at Rhine Arrish Coppice
EA name: WITHEY BROOK AT RHINE ARRISH COPPICE (also listed as “RSN1115 WITHEY BROOK AT RHINE ARRISH COPPICE”)
Environment Agency sampling point SW-RSN1115 · 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
- 18 Dec 2024, 10:3722 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 8 Oct 2026 and had nothing newer.
- Samples banked
- 12 since 11 Jan 2024 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 225167, 76802As published, to the nearest 1 m. Open in a map
- River, by its own name
- Withey Brook
- River, by the map
- Withey BrookPlaced on the river its name gives, 1 m from the line.
- Next gauge downstream
- Pillaton On the River Lynher · 24 km along the river
- Nearest gauge upstream
- Bastreet On the Withy Brook · 0.9 km along the river
- Why it was sampled
- Monitoring (national agency policy) (12 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
100%
Sampled 18 Dec 2024, 22 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Dec 2024, 10:37 | 100 | 100% |
| 6 Nov 2024, 14:22 | 99.6 | 99.6% |
| 9 Oct 2024, 12:15 | 99.1 | 99.1% |
| 20 Sep 2024, 16:05 | 99.8 | 99.8% |
| 1 Aug 2024, 11:49 | 102.3 | 102.3% |
| 5 Jul 2024, 14:15 | 100 | 100% |
| 21 Jun 2024, 14:13 | 99.3 | 99.3% |
| 8 May 2024, 11:51 | 98.1 | 98.1% |
| 5 Apr 2024, 12:11 | 100 | 100% |
| 22 Mar 2024, 14:33 | 101.6 | 101.6% |
| 14 Feb 2024, 15:50 | 98.7 | 98.7% |
| 11 Jan 2024, 11:05 | 99.6 | 99.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11.2 mg/l
Sampled 18 Dec 2024, 22 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Dec 2024, 10:37 | 11.2 | 11.2 mg/l |
| 6 Nov 2024, 14:22 | 10.7 | 10.7 mg/l |
| 9 Oct 2024, 12:15 | 10.6 | 10.6 mg/l |
| 20 Sep 2024, 16:05 | 10.3 | 10.3 mg/l |
| 1 Aug 2024, 11:49 | 9.96 | 9.96 mg/l |
| 5 Jul 2024, 14:15 | 10.3 | 10.3 mg/l |
| 21 Jun 2024, 14:13 | 10.3 | 10.3 mg/l |
| 8 May 2024, 11:51 | 10.5 | 10.5 mg/l |
| 5 Apr 2024, 12:11 | 11.1 | 11.1 mg/l |
| 22 Mar 2024, 14:33 | 11.3 | 11.3 mg/l |
| 14 Feb 2024, 15:50 | 11 | 11 mg/l |
| 11 Jan 2024, 11:05 | 12.6 | 12.6 mg/l |
Water temperature
code 0076 · °C
10.2 °C
Sampled 18 Dec 2024, 22 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Dec 2024, 10:37 | 10.2 | 10.2 °C |
| 6 Nov 2024, 14:22 | 12.1 | 12.1 °C |
| 9 Oct 2024, 12:15 | 12.4 | 12.4 °C |
| 20 Sep 2024, 16:05 | 13.9 | 13.9 °C |
| 1 Aug 2024, 11:49 | 16.5 | 16.5 °C |
| 5 Jul 2024, 14:15 | 14.1 | 14.1 °C |
| 21 Jun 2024, 14:13 | 13.6 | 13.6 °C |
| 8 May 2024, 11:51 | 12 | 12 °C |
| 5 Apr 2024, 12:11 | 10.7 | 10.7 °C |
| 22 Mar 2024, 14:33 | 10.7 | 10.7 °C |
| 14 Feb 2024, 15:50 | 10.4 | 10.4 °C |
| 11 Jan 2024, 11:05 | 5.2 | 5.2 °C |
pH
code 0061
5.77
Sampled 18 Dec 2024, 22 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Dec 2024, 10:37 | 5.77 | 5.77 |
| 6 Nov 2024, 14:22 | 6.05 | 6.05 |
| 9 Oct 2024, 12:15 | 5.68 | 5.68 |
| 20 Sep 2024, 16:05 | 6.61 | 6.61 |
| 1 Aug 2024, 11:49 | 6.5 | 6.5 |
| 5 Jul 2024, 14:15 | 6.87 | 6.87 |
| 21 Jun 2024, 14:13 | 6.49 | 6.49 |
| 8 May 2024, 11:51 | 6.5 | 6.5 |
| 5 Apr 2024, 12:11 | 5.87 | 5.87 |
| 22 Mar 2024, 14:33 | 6.08 | 6.08 |
| 14 Feb 2024, 15:50 | 5.8 | 5.8 |
| 11 Jan 2024, 11:05 | 6.07 | 6.07 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.0092 mg/l
Sampled 18 Dec 2024, 22 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Dec 2024, 10:37 | 0.0092 | 0.0092 mg/l |
| 6 Nov 2024, 14:22 | 0.0041 | 0.0041 mg/l |
| 9 Oct 2024, 12:15 | 0.0047 | 0.0047 mg/l |
| 20 Sep 2024, 16:05 | 0.006 | 0.006 mg/l |
| 1 Aug 2024, 11:49 | 0.0068 | 0.0068 mg/l |
| 5 Jul 2024, 14:15 | 0.005 | 0.005 mg/l |
| 21 Jun 2024, 14:13 | 0.0048 | 0.0048 mg/l |
| 8 May 2024, 11:51 | 0.0026 | 0.0026 mg/l |
| 5 Apr 2024, 12:11 | 0.017 | 0.017 mg/l |
| 22 Mar 2024, 14:33 | 0.0026 | 0.0026 mg/l |
| 14 Feb 2024, 15:50 | 0.015 | 0.015 mg/l |
| 11 Jan 2024, 11:05 | 0.0068 | 0.0068 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.289 mg/l
Sampled 18 Dec 2024, 22 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Dec 2024, 10:37 | 0.289 | 0.289 mg/l |
| 6 Nov 2024, 14:22 | 0.399 | 0.399 mg/l |
| 9 Oct 2024, 12:15 | 0.166 | 0.166 mg/l |
| 20 Sep 2024, 16:05 | 0.309 | 0.309 mg/l |
| 1 Aug 2024, 11:49 | 0.339 | 0.339 mg/l |
| 5 Jul 2024, 14:15 | 0.279 | 0.279 mg/l |
| 21 Jun 2024, 14:13 | 0.369 | 0.369 mg/l |
| 8 May 2024, 11:51 | 0.369 | 0.369 mg/l |
| 5 Apr 2024, 12:11 | 0.219 | 0.219 mg/l |
| 22 Mar 2024, 14:33 | 0.379 | 0.379 mg/l |
| 14 Feb 2024, 15:50 | 0.309 | 0.309 mg/l |
| 11 Jan 2024, 11:05 | 0.539 | 0.539 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.0024 mg/l
Sampled 18 Dec 2024, 22 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Dec 2024, 10:37 | 0.0024 | 0.0024 mg/l |
| 6 Nov 2024, 14:22 | 0.0016 | 0.0016 mg/l |
| 9 Oct 2024, 12:15 | 0.0065 | 0.0065 mg/l |
| 20 Sep 2024, 16:05 | 0.007 | 0.007 mg/l |
| 1 Aug 2024, 11:49 | 0.0035 | 0.0035 mg/l |
| 5 Jul 2024, 14:15 | 0.0026 | 0.0026 mg/l |
| 21 Jun 2024, 14:13 | 0.0019 | 0.0019 mg/l |
| 8 May 2024, 11:51 | 0.0021 | 0.0021 mg/l |
| 5 Apr 2024, 12:11 | 0.0086 | 0.0086 mg/l |
| 22 Mar 2024, 14:33 | 0.0023 | 0.0023 mg/l |
| 14 Feb 2024, 15:50 | 0.0059 | 0.0059 mg/l |
| 11 Jan 2024, 11:05 | 0.0023 | 0.0023 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
82 µS/cm
Sampled 18 Dec 2024, 22 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Dec 2024, 10:37 | 82 | 82 µS/cm |
| 6 Nov 2024, 14:22 | 61 | 61 µS/cm |
| 9 Oct 2024, 12:15 | 52 | 52 µS/cm |
| 20 Sep 2024, 16:05 | 64 | 64 µS/cm |
| 1 Aug 2024, 11:49 | 63 | 63 µS/cm |
| 5 Jul 2024, 14:15 | 65 | 65 µS/cm |
| 21 Jun 2024, 14:13 | 63 | 63 µS/cm |
| 8 May 2024, 11:51 | 61 | 61 µS/cm |
| 5 Apr 2024, 12:11 | 49 | 49 µS/cm |
| 22 Mar 2024, 14:33 | 60 | 60 µS/cm |
| 14 Feb 2024, 15:50 | 53 | 53 µS/cm |
| 11 Jan 2024, 11:05 | 66 | 66 µS/cm |
Everything measured here
16 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 16 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 12 | Jan 2024 – Dec 2024 | 100% 18 Dec 2024 |
| Oxygen, Dissolved as O2 9924 | River water | 12 | Jan 2024 – Dec 2024 | 11.2 mg/l 18 Dec 2024 |
| Temperature of Water 0076 | River water | 12 | Jan 2024 – Dec 2024 | 10.2 °C 18 Dec 2024 |
| pH 0061 | River water | 12 | Jan 2024 – Dec 2024 | 5.77 18 Dec 2024 |
| Ammoniacal Nitrogen as N 0111 | River water | 12 | Jan 2024 – Dec 2024 | 0.0092 mg/l 18 Dec 2024 |
| Nitrate as N 0117 | River water | 12 | Jan 2024 – Dec 2024 | 0.289 mg/l 18 Dec 2024 |
| Orthophosphate, reactive as P 0180 | River water | 12 | Jan 2024 – Dec 2024 | 0.0024 mg/l 18 Dec 2024 |
| Conductivity at 25 C 0077 | River water | 12 | Jan 2024 – Dec 2024 | 82 µS/cm 18 Dec 2024 |
| Alkalinity to pH 4.5 : Grans Plot 7610 | River water | 12 | Jan 2024 – Dec 2024 | 2 mg/l 18 Dec 2024 |
| Ammonia un-ionised as N 0119 | River water | 12 | Jan 2024 – Dec 2024 | below 0.00001 mg/l 18 Dec 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 12 | Jan 2024 – Dec 2024 | 3 mg/l 18 Dec 2024 |
| Flow Type 2896 | River water | 5 | Jul 2024 – Dec 2024 | High Flow 18 Dec 2024 |
| Nitrite as N 0118 | River water | 12 | Jan 2024 – Dec 2024 | below 0.001 mg/l 18 Dec 2024 |
| Nitrogen, Total Oxidised as N 0116 | River water | 12 | Jan 2024 – Dec 2024 | 0.29 mg/l 18 Dec 2024 |
| Phosphorus, Total as P 0348 | River water | 12 | Jan 2024 – Dec 2024 | below 0.01 mg/l 18 Dec 2024 |
| Silica, reactive as SiO2 0182 | River water | 12 | Jan 2024 – Dec 2024 | 4.6 mg/l 18 Dec 2024 |
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.