Weir Brook Ponthen
EA name: WEIR BK PONTHEN (also listed as “WEIR BROOK AT PONTHEN”)
Environment Agency sampling point MD-30546120 · 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
- 21 Aug 2026, 10:4741 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 23 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 Environmental monitoring statutory (EU directives)
- Where
- National Grid 334100, 317300As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Weir Brook
- River, by the map
- Weir BrookPlaced on the river its name gives, 29 m from the line.
- Next gauge downstream
- Cae Howel On the River Severn · 1.3 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (13 samples)
Monitoring (national agency policy) (10 samples)
14 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
84%
Sampled 21 Aug 2026, 41 days ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Aug 2026, 10:47 | 84 | 84% |
| 3 Jul 2026, 11:43 | 111.8 | 111.8% |
| 5 Jun 2026, 10:22 | 98.3 | 98.3% |
| 15 Apr 2026, 12:52 | 99.1 | 99.1% |
| 6 Mar 2026, 10:12 | 83.3 | 83.3% |
| 8 Jan 2026, 11:45 | 86.2 | 86.2% |
| 28 Nov 2025, 12:08 | 41.2 | 41.2% |
| 4 Dec 2024, 07:53 | 88.8 | 88.8% |
| 20 Nov 2024, 10:54 | 78.8 | 78.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.5 mg/l
Sampled 21 Aug 2026, 41 days ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Aug 2026, 10:47 | 8.5 | 8.5 mg/l |
| 3 Jul 2026, 11:43 | 10.8 | 10.8 mg/l |
| 5 Jun 2026, 10:22 | 10.2 | 10.2 mg/l |
| 15 Apr 2026, 12:52 | 10.7 | 10.7 mg/l |
| 6 Mar 2026, 10:12 | 9.87 | 9.87 mg/l |
| 8 Jan 2026, 11:45 | 10.9 | 10.9 mg/l |
| 28 Nov 2025, 12:08 | 4.79 | 4.79 mg/l |
| 4 Dec 2024, 07:53 | 11.2 | 11.2 mg/l |
| 20 Nov 2024, 10:54 | 9.77 | 9.77 mg/l |
Water temperature
code 0076 · °C
14.7 °C
Sampled 21 Aug 2026, 41 days ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Aug 2026, 10:47 | 14.7 | 14.7 °C |
| 3 Jul 2026, 11:43 | 17.1 | 17.1 °C |
| 5 Jun 2026, 10:22 | 13.4 | 13.4 °C |
| 15 Apr 2026, 12:52 | 11.8 | 11.8 °C |
| 6 Mar 2026, 10:12 | 7.9 | 7.9 °C |
| 8 Jan 2026, 11:45 | 5.5 | 5.5 °C |
| 28 Nov 2025, 12:08 | 8.7 | 8.7 °C |
| 4 Dec 2024, 07:53 | 5.4 | 5.4 °C |
| 20 Nov 2024, 10:54 | 6.1 | 6.1 °C |
pH
code 0061
7.64
Sampled 21 Aug 2026, 41 days ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Aug 2026, 10:47 | 7.64 | 7.64 |
| 3 Jul 2026, 11:43 | 8.08 | 8.08 |
| 5 Jun 2026, 10:22 | 7.97 | 7.97 |
| 15 Apr 2026, 12:52 | 7.78 | 7.78 |
| 6 Mar 2026, 10:12 | 7.59 | 7.59 |
| 8 Jan 2026, 11:45 | 7.54 | 7.54 |
| 28 Nov 2025, 12:08 | 6.81 | 6.81 |
| 4 Dec 2024, 07:53 | 6.65 | 6.65 |
| 20 Nov 2024, 10:54 | 7.21 | 7.21 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 21 Aug 2026, 41 days ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Aug 2026, 10:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Jul 2026, 11:43 | 0.038 | 0.038 mg/l |
| 5 Jun 2026, 10:22 | 0.11 | 0.11 mg/l |
| 15 Apr 2026, 12:52 | 0.11 | 0.11 mg/l |
| 6 Mar 2026, 10:12 | 0.26 | 0.26 mg/l |
| 8 Jan 2026, 11:45 | 0.26 | 0.26 mg/l |
| 28 Nov 2025, 12:08 | 0.075 | 0.075 mg/l |
| 4 Dec 2024, 07:53 | 0.17 | 0.17 mg/l |
| 20 Nov 2024, 10:54 | 0.37 | 0.37 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
11.9 mg/l
Sampled 21 Aug 2026, 41 days ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Aug 2026, 10:47 | 11.9 | 11.9 mg/l |
| 3 Jul 2026, 11:43 | 13.9 | 13.9 mg/l |
| 5 Jun 2026, 10:22 | 12.9 | 12.9 mg/l |
| 15 Apr 2026, 12:52 | 11 | 11 mg/l |
| 6 Mar 2026, 10:12 | 7.68 | 7.68 mg/l |
| 8 Jan 2026, 11:45 | 7.87 | 7.87 mg/l |
| 28 Nov 2025, 12:08 | 0.912 | 0.912 mg/l |
| 4 Dec 2024, 07:53 | 0.19 | 0.19 mg/l |
| 20 Nov 2024, 10:54 | 0.626 | 0.626 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.18 mg/l
Sampled 21 Aug 2026, 41 days ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Aug 2026, 10:47 | 0.18 | 0.18 mg/l |
| 3 Jul 2026, 11:43 | 0.13 | 0.13 mg/l |
| 5 Jun 2026, 10:22 | 0.089 | 0.089 mg/l |
| 15 Apr 2026, 12:52 | 0.087 | 0.087 mg/l |
| 6 Mar 2026, 10:12 | 0.13 | 0.13 mg/l |
| 8 Jan 2026, 11:45 | 0.095 | 0.095 mg/l |
| 28 Nov 2025, 12:08 | 0.15 | 0.15 mg/l |
| 4 Dec 2024, 07:53 | 0.23 | 0.23 mg/l |
| 20 Nov 2024, 10:54 | 0.28 | 0.28 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
554 µS/cm
Sampled 21 Aug 2026, 41 days ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Aug 2026, 10:47 | 554 | 554 µS/cm |
| 3 Jul 2026, 11:43 | 564 | 564 µS/cm |
| 5 Jun 2026, 10:22 | 584 | 584 µS/cm |
| 15 Apr 2026, 12:52 | 561 | 561 µS/cm |
| 6 Mar 2026, 10:12 | 505 | 505 µS/cm |
| 8 Jan 2026, 11:45 | 562 | 562 µS/cm |
| 28 Nov 2025, 12:08 | 326 | 326 µS/cm |
| 4 Dec 2024, 07:53 | 196 | 196 µS/cm |
| 20 Nov 2024, 10:54 | 403 | 403 µS/cm |
Everything measured here
14 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 14 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 9 | Nov 2024 – Aug 2026 | 84% 21 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 9 | Nov 2024 – Aug 2026 | 8.5 mg/l 21 Aug 2026 |
| Temperature of Water 0076 | River water | 9 | Nov 2024 – Aug 2026 | 14.7 °C 21 Aug 2026 |
| pH 0061 | River water | 9 | Nov 2024 – Aug 2026 | 7.64 21 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 9 | Nov 2024 – Aug 2026 | below 0.03 mg/l 21 Aug 2026 |
| Nitrate as N 0117 | River water | 9 | Nov 2024 – Aug 2026 | 11.9 mg/l 21 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 9 | Nov 2024 – Aug 2026 | 0.18 mg/l 21 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 9 | Nov 2024 – Aug 2026 | 554 µS/cm 21 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 9 | Nov 2024 – Aug 2026 | 170 mg/l 21 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 9 | Nov 2024 – Aug 2026 | below 0.00034 mg/l 21 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 6 | Nov 2024 – Apr 2026 | 1.6 mg/l 15 Apr 2026 |
| Nitrite as N 0118 | River water | 9 | Nov 2024 – Aug 2026 | 0.061 mg/l 21 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 9 | Nov 2024 – Aug 2026 | 12 mg/l 21 Aug 2026 |
| No flow /No sample 7668 | River water | 14 | Jun 2024 – Oct 2025 | No flow/discharge at sampling point 10 Oct 2025 |
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.