Withy Brook - High Bridge
EA name: WITHY BROOK - HIGH BRIDGE
Environment Agency sampling point MD-11973120 · 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
- 9 Apr 2026, 12:376 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
- 18 since 18 Oct 2023 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 438730, 280700As published, to the nearest 10 m. Open in a map
- River, by its own name
- Withy Brook
- River, by the map
- Withy BrookPlaced on the river its name gives, 4 m from the line.
- Next gauge downstream
- Warwick On the River Avon · 30 km along the river (the path rests on a repair to the map)
- Why it was sampled
- Monitoring (national agency policy) (18 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
108.9%
Sampled 9 Apr 2026, 6 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Apr 2026, 12:37 | 108.9 | 108.9% |
| 6 Mar 2026, 09:47 | 95.8 | 95.8% |
| 13 Feb 2026, 09:41 | 94.1 | 94.1% |
| 28 Jan 2026, 11:51 | 95.4 | 95.4% |
| 14 Mar 2025, 12:53 | 118.6 | 118.6% |
| 26 Nov 2024, 09:49 | 91.9 | 91.9% |
| 23 Oct 2024, 10:16 | 92.3 | 92.3% |
| 30 Aug 2024, 13:20 | 87.5 | 87.5% |
| 15 Jul 2024, 08:30 | 86.5 | 86.5% |
| 18 Jun 2024, 09:43 | 78 | 78% |
| 20 May 2024, 13:27 | 98.9 | 98.9% |
| 18 Apr 2024, 12:02 | 104.1 | 104.1% |
| 20 Mar 2024, 10:13 | 96.6 | 96.6% |
| 26 Feb 2024, 13:56 | 97.7 | 97.7% |
| 16 Jan 2024, 14:22 | 92.6 | 92.6% |
| 8 Dec 2023, 13:02 | 97 | 97% |
| 22 Nov 2023, 12:16 | 91.2 | 91.2% |
| 18 Oct 2023, 10:00 | 91.4 | 91.4% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11.8 mg/l
Sampled 9 Apr 2026, 6 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Apr 2026, 12:37 | 11.8 | 11.8 mg/l |
| 6 Mar 2026, 09:47 | 11.2 | 11.2 mg/l |
| 13 Feb 2026, 09:41 | 11.7 | 11.7 mg/l |
| 28 Jan 2026, 11:51 | 12 | 12 mg/l |
| 14 Mar 2025, 12:53 | 14.9 | 14.9 mg/l |
| 26 Nov 2024, 09:49 | 10.9 | 10.9 mg/l |
| 23 Oct 2024, 10:16 | 10.2 | 10.2 mg/l |
| 30 Aug 2024, 13:20 | 8.72 | 8.72 mg/l |
| 15 Jul 2024, 08:30 | 9.09 | 9.09 mg/l |
| 18 Jun 2024, 09:43 | 8.2 | 8.2 mg/l |
| 20 May 2024, 13:27 | 9.78 | 9.78 mg/l |
| 18 Apr 2024, 12:02 | 12 | 12 mg/l |
| 20 Mar 2024, 10:13 | 10.7 | 10.7 mg/l |
| 26 Feb 2024, 13:56 | 11.9 | 11.9 mg/l |
| 16 Jan 2024, 14:22 | 12.4 | 12.4 mg/l |
| 8 Dec 2023, 13:02 | 11.6 | 11.6 mg/l |
| 22 Nov 2023, 12:16 | 10.5 | 10.5 mg/l |
| 18 Oct 2023, 10:00 | 10.2 | 10.2 mg/l |
Water temperature
code 0076 · °C
11.5 °C
Sampled 9 Apr 2026, 6 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Apr 2026, 12:37 | 11.5 | 11.5 °C |
| 6 Mar 2026, 09:47 | 8.3 | 8.3 °C |
| 13 Feb 2026, 09:41 | 5.9 | 5.9 °C |
| 28 Jan 2026, 11:51 | 5.7 | 5.7 °C |
| 14 Mar 2025, 12:53 | 5.5 | 5.5 °C |
| 26 Nov 2024, 09:49 | 7.8 | 7.8 °C |
| 23 Oct 2024, 10:16 | 10.8 | 10.8 °C |
| 30 Aug 2024, 13:20 | 15.4 | 15.4 °C |
| 15 Jul 2024, 08:30 | 13 | 13 °C |
| 18 Jun 2024, 09:43 | 13 | 13 °C |
| 20 May 2024, 13:27 | 15.8 | 15.8 °C |
| 18 Apr 2024, 12:02 | 9 | 9 °C |
| 20 Mar 2024, 10:13 | 10.6 | 10.6 °C |
| 26 Feb 2024, 13:56 | 6.8 | 6.8 °C |
| 16 Jan 2024, 14:22 | 3 | 3 °C |
| 8 Dec 2023, 13:02 | 7.4 | 7.4 °C |
| 22 Nov 2023, 12:16 | 8.9 | 8.9 °C |
| 18 Oct 2023, 10:00 | 10.6 | 10.6 °C |
pH
code 0061
8.26
Sampled 9 Apr 2026, 6 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Apr 2026, 12:37 | 8.26 | 8.26 |
| 6 Mar 2026, 09:47 | 7.91 | 7.91 |
| 13 Feb 2026, 09:41 | 7.96 | 7.96 |
| 28 Jan 2026, 11:51 | 7.83 | 7.83 |
| 14 Mar 2025, 12:53 | 8.5 | 8.5 |
| 26 Nov 2024, 09:49 | 7.96 | 7.96 |
| 23 Oct 2024, 10:16 | 7.97 | 7.97 |
| 30 Aug 2024, 13:20 | 7.99 | 7.99 |
| 15 Jul 2024, 08:30 | 8.44 | 8.44 |
| 18 Jun 2024, 09:43 | 7.41 | 7.41 |
| 20 May 2024, 13:27 | 8.13 | 8.13 |
| 18 Apr 2024, 12:02 | 8.11 | 8.11 |
| 20 Mar 2024, 10:13 | 8 | 8 |
| 26 Feb 2024, 13:56 | 8.17 | 8.17 |
| 16 Jan 2024, 14:22 | 8.19 | 8.19 |
| 8 Dec 2023, 13:02 | 8.02 | 8.02 |
| 22 Nov 2023, 12:16 | 8.22 | 8.22 |
| 18 Oct 2023, 10:00 | 8.1 | 8.1 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 9 Apr 2026, 6 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Apr 2026, 12:37 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Mar 2026, 09:47 | 0.041 | 0.041 mg/l |
| 13 Feb 2026, 09:41 | 0.084 | 0.084 mg/l |
| 28 Jan 2026, 11:51 | 0.14 | 0.14 mg/l |
| 14 Mar 2025, 12:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Nov 2024, 09:49 | 0.033 | 0.033 mg/l |
| 23 Oct 2024, 10:16 | <0.03 | below 0.03 mg/l (not detected above this) |
| 30 Aug 2024, 13:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Jul 2024, 08:30 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Jun 2024, 09:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 May 2024, 13:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Apr 2024, 12:02 | 0.069 | 0.069 mg/l |
| 20 Mar 2024, 10:13 | 0.043 | 0.043 mg/l |
| 26 Feb 2024, 13:56 | 0.052 | 0.052 mg/l |
| 16 Jan 2024, 14:22 | 0.16 | 0.16 mg/l |
| 8 Dec 2023, 13:02 | 0.043 | 0.043 mg/l |
| 22 Nov 2023, 12:16 | 0.068 | 0.068 mg/l |
| 18 Oct 2023, 10:00 | 0.041 | 0.041 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.78 mg/l
Sampled 9 Apr 2026, 6 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Apr 2026, 12:37 | 1.78 | 1.78 mg/l |
| 6 Mar 2026, 09:47 | 4.17 | 4.17 mg/l |
| 13 Feb 2026, 09:41 | 3.78 | 3.78 mg/l |
| 28 Jan 2026, 11:51 | 6.28 | 6.28 mg/l |
| 14 Mar 2025, 12:53 | 3.09 | 3.09 mg/l |
| 26 Nov 2024, 09:49 | 8.18 | 8.18 mg/l |
| 23 Oct 2024, 10:16 | 5.69 | 5.69 mg/l |
| 30 Aug 2024, 13:20 | 0.805 | 0.805 mg/l |
| 15 Jul 2024, 08:30 | 1.39 | 1.39 mg/l |
| 18 Jun 2024, 09:43 | 1.59 | 1.59 mg/l |
| 20 May 2024, 13:27 | 2.08 | 2.08 mg/l |
| 18 Apr 2024, 12:02 | 2.86 | 2.86 mg/l |
| 20 Mar 2024, 10:13 | 4.08 | 4.08 mg/l |
| 26 Feb 2024, 13:56 | 4.28 | 4.28 mg/l |
| 16 Jan 2024, 14:22 | 4.47 | 4.47 mg/l |
| 8 Dec 2023, 13:02 | 7.19 | 7.19 mg/l |
| 22 Nov 2023, 12:16 | 7.57 | 7.57 mg/l |
| 18 Oct 2023, 10:00 | 7.07 | 7.07 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.061 mg/l
Sampled 9 Apr 2026, 6 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Apr 2026, 12:37 | 0.061 | 0.061 mg/l |
| 6 Mar 2026, 09:47 | 0.1 | 0.1 mg/l |
| 13 Feb 2026, 09:41 | 0.1 | 0.1 mg/l |
| 28 Jan 2026, 11:51 | 0.12 | 0.12 mg/l |
| 14 Mar 2025, 12:53 | 0.062 | 0.062 mg/l |
| 26 Nov 2024, 09:49 | 0.054 | 0.054 mg/l |
| 23 Oct 2024, 10:16 | 0.062 | 0.062 mg/l |
| 30 Aug 2024, 13:20 | 0.16 | 0.16 mg/l |
| 15 Jul 2024, 08:30 | 0.15 | 0.15 mg/l |
| 18 Jun 2024, 09:43 | 0.12 | 0.12 mg/l |
| 20 May 2024, 13:27 | 0.11 | 0.11 mg/l |
| 18 Apr 2024, 12:02 | 0.074 | 0.074 mg/l |
| 20 Mar 2024, 10:13 | 0.069 | 0.069 mg/l |
| 26 Feb 2024, 13:56 | 0.092 | 0.092 mg/l |
| 16 Jan 2024, 14:22 | 0.1 | 0.1 mg/l |
| 8 Dec 2023, 13:02 | 0.076 | 0.076 mg/l |
| 22 Nov 2023, 12:16 | 0.074 | 0.074 mg/l |
| 18 Oct 2023, 10:00 | 0.085 | 0.085 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
966 µS/cm
Sampled 9 Apr 2026, 6 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Apr 2026, 12:37 | 966 | 966 µS/cm |
| 6 Mar 2026, 09:47 | 761 | 761 µS/cm |
| 13 Feb 2026, 09:41 | 501 | 501 µS/cm |
| 28 Jan 2026, 11:51 | 575 | 575 µS/cm |
| 14 Mar 2025, 12:53 | 940 | 940 µS/cm |
| 26 Nov 2024, 09:49 | 609 | 609 µS/cm |
| 23 Oct 2024, 10:16 | 689 | 689 µS/cm |
| 30 Aug 2024, 13:20 | 996 | 996 µS/cm |
| 15 Jul 2024, 08:30 | 993 | 993 µS/cm |
| 18 Jun 2024, 09:43 | 591 | 591 µS/cm |
| 20 May 2024, 13:27 | 619 | 619 µS/cm |
| 18 Apr 2024, 12:02 | 878 | 878 µS/cm |
| 20 Mar 2024, 10:13 | 756 | 756 µS/cm |
| 26 Feb 2024, 13:56 | 770 | 770 µS/cm |
| 16 Jan 2024, 14:22 | 896 | 896 µS/cm |
| 8 Dec 2023, 13:02 | 562 | 562 µS/cm |
| 22 Nov 2023, 12:16 | 604 | 604 µS/cm |
| 18 Oct 2023, 10:00 | 891 | 891 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 | 18 | Oct 2023 – Apr 2026 | 108.9% 9 Apr 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 18 | Oct 2023 – Apr 2026 | 11.8 mg/l 9 Apr 2026 |
| Temperature of Water 0076 | River water | 18 | Oct 2023 – Apr 2026 | 11.5 °C 9 Apr 2026 |
| pH 0061 | River water | 18 | Oct 2023 – Apr 2026 | 8.26 9 Apr 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 18 | Oct 2023 – Apr 2026 | below 0.03 mg/l 9 Apr 2026 |
| Nitrate as N 0117 | River water | 18 | Oct 2023 – Apr 2026 | 1.78 mg/l 9 Apr 2026 |
| Orthophosphate, reactive as P 0180 | River water | 18 | Oct 2023 – Apr 2026 | 0.061 mg/l 9 Apr 2026 |
| Conductivity at 25 C 0077 | River water | 18 | Oct 2023 – Apr 2026 | 966 µS/cm 9 Apr 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 18 | Oct 2023 – Apr 2026 | 270 mg/l 9 Apr 2026 |
| Ammonia un-ionised as N 0119 | River water | 18 | Oct 2023 – Apr 2026 | below 0.00061 mg/l 9 Apr 2026 |
| BOD : 5 Day ATU 0085 | River water | 14 | Feb 2024 – Apr 2026 | 1.5 mg/l 9 Apr 2026 |
| Nitrite as N 0118 | River water | 18 | Oct 2023 – Apr 2026 | 0.017 mg/l 9 Apr 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 18 | Oct 2023 – Apr 2026 | 1.8 mg/l 9 Apr 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.