CWM Brook at Vedw Farm
EA name: CWM BROOK AT VEDW FARM (also listed as “RSN2271 CWM BROOK AT VEDW FARM”)
Environment Agency sampling point MD-RSN2271 · 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
- 6 Sep 2024, 12:262.1 years 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
- 6 since 26 Jan 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 335968, 227829As published, to the nearest 1 m. Open in a map
- River, by its own name
- Cwm Brook
- River, by the map
- Cwm BrookPlaced on the river its name gives, 2 m from the line.
- Next gauge downstream
- Grosmont Rhosllwyn River Station On the Monnow · 9.5 km along the river
- Why it was sampled
- Monitoring (national agency policy) (6 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
94.6%
Sampled 6 Sep 2024, 2.1 years ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Sep 2024, 12:26 | 94.6 | 94.6% |
| 3 May 2024, 11:36 | 102.9 | 102.9% |
| 12 Apr 2024, 10:55 | 102.3 | 102.3% |
| 11 Mar 2024, 12:22 | 101.4 | 101.4% |
| 20 Feb 2024, 11:29 | 99.6 | 99.6% |
| 26 Jan 2024, 11:51 | 99.2 | 99.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.74 mg/l
Sampled 6 Sep 2024, 2.1 years ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Sep 2024, 12:26 | 9.74 | 9.74 mg/l |
| 3 May 2024, 11:36 | 11.6 | 11.6 mg/l |
| 12 Apr 2024, 10:55 | 11.4 | 11.4 mg/l |
| 11 Mar 2024, 12:22 | 12 | 12 mg/l |
| 20 Feb 2024, 11:29 | 11.2 | 11.2 mg/l |
| 26 Jan 2024, 11:51 | 11.9 | 11.9 mg/l |
Water temperature
code 0076 · °C
13.9 °C
Sampled 6 Sep 2024, 2.1 years ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Sep 2024, 12:26 | 13.9 | 13.9 °C |
| 3 May 2024, 11:36 | 9.9 | 9.9 °C |
| 12 Apr 2024, 10:55 | 10.3 | 10.3 °C |
| 11 Mar 2024, 12:22 | 7.8 | 7.8 °C |
| 20 Feb 2024, 11:29 | 10.1 | 10.1 °C |
| 26 Jan 2024, 11:51 | 7.3 | 7.3 °C |
pH
code 0061
8.12
Sampled 6 Sep 2024, 2.1 years ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Sep 2024, 12:26 | 8.12 | 8.12 |
| 3 May 2024, 11:36 | 8.01 | 8.01 |
| 12 Apr 2024, 10:55 | 8.08 | 8.08 |
| 11 Mar 2024, 12:22 | 8.17 | 8.17 |
| 20 Feb 2024, 11:29 | 7.85 | 7.85 |
| 26 Jan 2024, 11:51 | 7.66 | 7.66 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.0059 mg/l
Sampled 6 Sep 2024, 2.1 years ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Sep 2024, 12:26 | 0.0059 | 0.0059 mg/l |
| 3 May 2024, 11:36 | 0.12 | 0.12 mg/l |
| 12 Apr 2024, 10:55 | 0.033 | 0.033 mg/l |
| 11 Mar 2024, 12:22 | 0.034 | 0.034 mg/l |
| 20 Feb 2024, 11:29 | 0.018 | 0.018 mg/l |
| 26 Jan 2024, 11:51 | 0.035 | 0.035 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.5 mg/l
Sampled 6 Sep 2024, 2.1 years ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Sep 2024, 12:26 | 2.5 | 2.5 mg/l |
| 3 May 2024, 11:36 | 0.932 | 0.932 mg/l |
| 12 Apr 2024, 10:55 | 2.88 | 2.88 mg/l |
| 11 Mar 2024, 12:22 | 2.88 | 2.88 mg/l |
| 20 Feb 2024, 11:29 | 3.19 | 3.19 mg/l |
| 26 Jan 2024, 11:51 | 2.79 | 2.79 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.23 mg/l
Sampled 6 Sep 2024, 2.1 years ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Sep 2024, 12:26 | 0.23 | 0.23 mg/l |
| 3 May 2024, 11:36 | 0.46 | 0.46 mg/l |
| 12 Apr 2024, 10:55 | 0.11 | 0.11 mg/l |
| 11 Mar 2024, 12:22 | 0.11 | 0.11 mg/l |
| 20 Feb 2024, 11:29 | 0.09 | 0.09 mg/l |
| 26 Jan 2024, 11:51 | 0.15 | 0.15 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
556 µS/cm
Sampled 6 Sep 2024, 2.1 years ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Sep 2024, 12:26 | 556 | 556 µS/cm |
| 3 May 2024, 11:36 | 299 | 299 µS/cm |
| 12 Apr 2024, 10:55 | 401 | 401 µS/cm |
| 11 Mar 2024, 12:22 | 370 | 370 µS/cm |
| 20 Feb 2024, 11:29 | 391 | 391 µS/cm |
| 26 Jan 2024, 11:51 | 307 | 307 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 | 6 | Jan 2024 – Sep 2024 | 94.6% 6 Sep 2024 |
| Oxygen, Dissolved as O2 9924 | River water | 6 | Jan 2024 – Sep 2024 | 9.74 mg/l 6 Sep 2024 |
| Temperature of Water 0076 | River water | 6 | Jan 2024 – Sep 2024 | 13.9 °C 6 Sep 2024 |
| pH 0061 | River water | 6 | Jan 2024 – Sep 2024 | 8.12 6 Sep 2024 |
| Ammoniacal Nitrogen as N 0111 | River water | 6 | Jan 2024 – Sep 2024 | 0.0059 mg/l 6 Sep 2024 |
| Nitrate as N 0117 | River water | 6 | Jan 2024 – Sep 2024 | 2.5 mg/l 6 Sep 2024 |
| Orthophosphate, reactive as P 0180 | River water | 6 | Jan 2024 – Sep 2024 | 0.23 mg/l 6 Sep 2024 |
| Conductivity at 25 C 0077 | River water | 6 | Jan 2024 – Sep 2024 | 556 µS/cm 6 Sep 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 6 | Jan 2024 – Sep 2024 | 260 mg/l 6 Sep 2024 |
| Ammonia un-ionised as N 0119 | River water | 6 | Jan 2024 – Sep 2024 | 0.00014 mg/l 6 Sep 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 6 | Jan 2024 – Sep 2024 | 3.9 mg/l 6 Sep 2024 |
| Chloride 0172 | River water | 6 | Jan 2024 – Sep 2024 | 26 mg/l 6 Sep 2024 |
| Nitrite as N 0118 | River water | 6 | Jan 2024 – Sep 2024 | 0.0038 mg/l 6 Sep 2024 |
| Nitrogen, Total Oxidised as N 0116 | River water | 6 | Jan 2024 – Sep 2024 | 2.5 mg/l 6 Sep 2024 |
| Phosphorus, Total as P 0348 | River water | 6 | Jan 2024 – Sep 2024 | 0.29 mg/l 6 Sep 2024 |
| Silica, reactive as SiO2 0182 | River water | 6 | Jan 2024 – Sep 2024 | 9.3 mg/l 6 Sep 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.