River Severn Montford Bridge
EA name: R.SEVERN MONTFORD BRIDGE (also listed as “RIVER SEVERN AT MONTFORD BRIDGE”)
Environment Agency sampling point MD-00056710 · 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, 13:2341 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 30 since 2 Oct 2023 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 343200, 315300As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Severn
- River, by the map
- Afon HafrenPlaced on the river its name gives, 14 m from the line.
- Next gauge downstream
- Welsh Bridge On the River Severn · 19 km along the river
- Nearest gauge upstream
- Montford On the River Severn · 3.5 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (18 samples)
Monitoring (national agency policy) (10 samples)
Unplanned reactive monitoring (pollution incidents) (2 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
98.4%
Sampled 21 Aug 2026, 41 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Aug 2026, 13:23 | 98.4 | 98.4% |
| 3 Jul 2026, 09:34 | 96.1 | 96.1% |
| 19 Jun 2026, 12:37 | 95.1 | 95.1% |
| 19 May 2026, 11:48 | 109.9 | 109.9% |
| 20 Apr 2026, 13:03 | 99.9 | 99.9% |
| 4 Feb 2026, 10:35 | 98.3 | 98.3% |
| 3 Dec 2025, 10:26 | 90.5 | 90.5% |
| 10 Nov 2025, 11:24 | 91.9 | 91.9% |
| 23 Oct 2025, 11:36 | 96.1 | 96.1% |
| 3 Sep 2025, 14:49 | 109.5 | 109.5% |
| 1 Aug 2025, 10:36 | 98.6 | 98.6% |
| 16 Jul 2025, 09:55 | 90.1 | 90.1% |
| 5 Jun 2025, 12:45 | 97.7 | 97.7% |
| 16 May 2025, 13:58 | 106.3 | 106.3% |
| 16 Apr 2025, 12:11 | 104.1 | 104.1% |
| 12 Mar 2025, 11:21 | 96.3 | 96.3% |
| 10 Feb 2025, 12:15 | 98.3 | 98.3% |
| 27 Jan 2025, 11:32 | 96.6 | 96.6% |
| 4 Dec 2024, 10:15 | 90.6 | 90.6% |
| 20 Nov 2024, 14:31 | 91.7 | 91.7% |
| 14 Oct 2024, 10:48 | 96.7 | 96.7% |
| 30 Sep 2024, 13:22 | 93.1 | 93.1% |
| 19 Aug 2024, 14:18 | 92.6 | 92.6% |
| 17 Jul 2024, 13:16 | 90.3 | 90.3% |
| 17 Jun 2024, 12:19 | 90.5 | 90.5% |
| 1 Mar 2024, 13:21 | 95.2 | 95.2% |
| 29 Jan 2024, 14:42 | 93.7 | 93.7% |
| 21 Dec 2023, 15:12 | 94.3 | 94.3% |
| 22 Nov 2023, 14:49 | 92.1 | 92.1% |
| 2 Oct 2023, 14:50 | 86.4 | 86.4% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.43 mg/l
Sampled 21 Aug 2026, 41 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Aug 2026, 13:23 | 9.43 | 9.43 mg/l |
| 3 Jul 2026, 09:34 | 9.04 | 9.04 mg/l |
| 19 Jun 2026, 12:37 | 8.68 | 8.68 mg/l |
| 19 May 2026, 11:48 | 11.2 | 11.2 mg/l |
| 20 Apr 2026, 13:03 | 10.8 | 10.8 mg/l |
| 4 Feb 2026, 10:35 | 12.4 | 12.4 mg/l |
| 3 Dec 2025, 10:26 | 11 | 11 mg/l |
| 10 Nov 2025, 11:24 | 10.3 | 10.3 mg/l |
| 23 Oct 2025, 11:36 | 10.5 | 10.5 mg/l |
| 3 Sep 2025, 14:49 | 10.5 | 10.5 mg/l |
| 1 Aug 2025, 10:36 | 9.35 | 9.35 mg/l |
| 16 Jul 2025, 09:55 | 8.3 | 8.3 mg/l |
| 5 Jun 2025, 12:45 | 9.6 | 9.6 mg/l |
| 16 May 2025, 13:58 | 10 | 10 mg/l |
| 16 Apr 2025, 12:11 | 11.4 | 11.4 mg/l |
| 12 Mar 2025, 11:21 | 11.3 | 11.3 mg/l |
| 10 Feb 2025, 12:15 | 12.4 | 12.4 mg/l |
| 27 Jan 2025, 11:32 | 12.3 | 12.3 mg/l |
| 4 Dec 2024, 10:15 | 11.1 | 11.1 mg/l |
| 20 Nov 2024, 14:31 | 11.6 | 11.6 mg/l |
| 14 Oct 2024, 10:48 | 11.2 | 11.2 mg/l |
| 30 Sep 2024, 13:22 | 10.2 | 10.2 mg/l |
| 19 Aug 2024, 14:18 | 8.93 | 8.93 mg/l |
| 17 Jul 2024, 13:16 | 8.78 | 8.78 mg/l |
| 17 Jun 2024, 12:19 | 9.14 | 9.14 mg/l |
| 1 Mar 2024, 13:21 | 11.5 | 11.5 mg/l |
| 29 Jan 2024, 14:42 | 11 | 11 mg/l |
| 21 Dec 2023, 15:12 | 11 | 11 mg/l |
| 22 Nov 2023, 14:49 | 10.5 | 10.5 mg/l |
| 2 Oct 2023, 14:50 | 8.82 | 8.82 mg/l |
Water temperature
code 0076 · °C
17.3 °C
Sampled 21 Aug 2026, 41 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Aug 2026, 13:23 | 17.3 | 17.3 °C |
| 3 Jul 2026, 09:34 | 18.2 | 18.2 °C |
| 19 Jun 2026, 12:37 | 19.7 | 19.7 °C |
| 19 May 2026, 11:48 | 14.2 | 14.2 °C |
| 20 Apr 2026, 13:03 | 11.9 | 11.9 °C |
| 4 Feb 2026, 10:35 | 5.5 | 5.5 °C |
| 3 Dec 2025, 10:26 | 6.9 | 6.9 °C |
| 10 Nov 2025, 11:24 | 10.4 | 10.4 °C |
| 23 Oct 2025, 11:36 | 11.2 | 11.2 °C |
| 3 Sep 2025, 14:49 | 17.3 | 17.3 °C |
| 1 Aug 2025, 10:36 | 17.8 | 17.8 °C |
| 16 Jul 2025, 09:55 | 19.2 | 19.2 °C |
| 5 Jun 2025, 12:45 | 16.1 | 16.1 °C |
| 16 May 2025, 13:58 | 18.1 | 18.1 °C |
| 16 Apr 2025, 12:11 | 11.2 | 11.2 °C |
| 12 Mar 2025, 11:21 | 8.2 | 8.2 °C |
| 10 Feb 2025, 12:15 | 5.4 | 5.4 °C |
| 27 Jan 2025, 11:32 | 5.1 | 5.1 °C |
| 4 Dec 2024, 10:15 | 6.6 | 6.6 °C |
| 20 Nov 2024, 14:31 | 5.3 | 5.3 °C |
| 14 Oct 2024, 10:48 | 8.8 | 8.8 °C |
| 30 Sep 2024, 13:22 | 11.1 | 11.1 °C |
| 19 Aug 2024, 14:18 | 17 | 17 °C |
| 17 Jul 2024, 13:16 | 16.6 | 16.6 °C |
| 17 Jun 2024, 12:19 | 14.8 | 14.8 °C |
| 1 Mar 2024, 13:21 | 7.3 | 7.3 °C |
| 29 Jan 2024, 14:42 | 8.2 | 8.2 °C |
| 21 Dec 2023, 15:12 | 8.5 | 8.5 °C |
| 22 Nov 2023, 14:49 | 9.5 | 9.5 °C |
| 2 Oct 2023, 14:50 | 14.3 | 14.3 °C |
pH
code 0061
7.76
Sampled 21 Aug 2026, 41 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Aug 2026, 13:23 | 7.76 | 7.76 |
| 3 Jul 2026, 09:34 | 7.97 | 7.97 |
| 19 Jun 2026, 12:37 | 7.69 | 7.69 |
| 19 May 2026, 11:48 | 8.09 | 8.09 |
| 20 Apr 2026, 13:03 | 7.82 | 7.82 |
| 4 Feb 2026, 10:35 | 7.72 | 7.72 |
| 3 Dec 2025, 10:26 | 7.51 | 7.51 |
| 10 Nov 2025, 11:24 | 7.77 | 7.77 |
| 23 Oct 2025, 11:36 | 8.1 | 8.1 |
| 3 Sep 2025, 14:49 | 8.32 | 8.32 |
| 1 Aug 2025, 10:36 | 8.06 | 8.06 |
| 16 Jul 2025, 09:55 | 8.47 | 8.47 |
| 5 Jun 2025, 12:45 | 7.94 | 7.94 |
| 16 May 2025, 13:58 | 8 | 8 |
| 16 Apr 2025, 12:11 | 8.2 | 8.2 |
| 12 Mar 2025, 11:21 | 7.9 | 7.9 |
| 10 Feb 2025, 12:15 | 8.11 | 8.11 |
| 27 Jan 2025, 11:32 | 7.74 | 7.74 |
| 4 Dec 2024, 10:15 | 7.61 | 7.61 |
| 20 Nov 2024, 14:31 | 7.88 | 7.88 |
| 14 Oct 2024, 10:48 | 7.94 | 7.94 |
| 30 Sep 2024, 13:22 | 7.81 | 7.81 |
| 19 Aug 2024, 14:18 | 7.62 | 7.62 |
| 17 Jul 2024, 13:16 | 7.9 | 7.9 |
| 17 Jun 2024, 12:19 | 8.22 | 8.22 |
| 1 Mar 2024, 13:21 | 7.97 | 7.97 |
| 29 Jan 2024, 14:42 | 7.5 | 7.5 |
| 21 Dec 2023, 15:12 | 7.92 | 7.92 |
| 22 Nov 2023, 14:49 | 7.58 | 7.58 |
| 2 Oct 2023, 14:50 | 7.25 | 7.25 |
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 · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Aug 2026, 13:23 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Jul 2026, 09:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Jun 2026, 12:37 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 May 2026, 11:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Apr 2026, 13:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Feb 2026, 10:35 | 0.11 | 0.11 mg/l |
| 3 Dec 2025, 10:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Nov 2025, 11:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Oct 2025, 11:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Sep 2025, 14:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Aug 2025, 10:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Jul 2025, 09:55 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Jun 2025, 12:45 | 0.037 | 0.037 mg/l |
| 16 May 2025, 13:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Apr 2025, 12:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Mar 2025, 11:21 | 0.039 | 0.039 mg/l |
| 10 Feb 2025, 12:15 | 0.069 | 0.069 mg/l |
| 27 Jan 2025, 11:32 | 0.17 | 0.17 mg/l |
| 4 Dec 2024, 10:15 | 0.042 | 0.042 mg/l |
| 20 Nov 2024, 14:31 | 0.1 | 0.1 mg/l |
| 14 Oct 2024, 10:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 30 Sep 2024, 13:22 | 0.055 | 0.055 mg/l |
| 19 Aug 2024, 14:18 | 0.03 | 0.03 mg/l |
| 17 Jul 2024, 13:16 | 0.052 | 0.052 mg/l |
| 17 Jun 2024, 12:19 | 0.095 | 0.095 mg/l |
| 1 Mar 2024, 13:21 | 0.096 | 0.096 mg/l |
| 29 Jan 2024, 14:42 | 0.23 | 0.23 mg/l |
| 21 Dec 2023, 15:12 | 0.069 | 0.069 mg/l |
| 22 Nov 2023, 14:49 | 0.18 | 0.18 mg/l |
| 2 Oct 2023, 14:50 | 0.031 | 0.031 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.856 mg/l
Sampled 21 Aug 2026, 41 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Aug 2026, 13:23 | 0.856 | 0.856 mg/l |
| 3 Jul 2026, 09:34 | 1.1 | 1.1 mg/l |
| 19 Jun 2026, 12:37 | 1.19 | 1.19 mg/l |
| 19 May 2026, 11:48 | 1.69 | 1.69 mg/l |
| 20 Apr 2026, 13:03 | 1.3 | 1.3 mg/l |
| 4 Feb 2026, 10:35 | 2.39 | 2.39 mg/l |
| 3 Dec 2025, 10:26 | 1.59 | 1.59 mg/l |
| 10 Nov 2025, 11:24 | 1.5 | 1.5 mg/l |
| 23 Oct 2025, 11:36 | 0.936 | 0.936 mg/l |
| 3 Sep 2025, 14:49 | 0.996 | 0.996 mg/l |
| 1 Aug 2025, 10:36 | 0.996 | 0.996 mg/l |
| 16 Jul 2025, 09:55 | 0.956 | 0.956 mg/l |
| 5 Jun 2025, 12:45 | 0.975 | 0.975 mg/l |
| 16 May 2025, 13:58 | 1.98 | 1.98 mg/l |
| 16 Apr 2025, 12:11 | 2.39 | 2.39 mg/l |
| 12 Mar 2025, 11:21 | 2.38 | 2.38 mg/l |
| 10 Feb 2025, 12:15 | 2.68 | 2.68 mg/l |
| 27 Jan 2025, 11:32 | 2.09 | 2.09 mg/l |
| 4 Dec 2024, 10:15 | 1.79 | 1.79 mg/l |
| 20 Nov 2024, 14:31 | 1.89 | 1.89 mg/l |
| 14 Oct 2024, 10:48 | 1.49 | 1.49 mg/l |
| 30 Sep 2024, 13:22 | 2.08 | 2.08 mg/l |
| 19 Aug 2024, 14:18 | 1.39 | 1.39 mg/l |
| 17 Jul 2024, 13:16 | 1.49 | 1.49 mg/l |
| 17 Jun 2024, 12:19 | 1.38 | 1.38 mg/l |
| 1 Mar 2024, 13:21 | 2.17 | 2.17 mg/l |
| 29 Jan 2024, 14:42 | 2.52 | 2.52 mg/l |
| 21 Dec 2023, 15:12 | 2.28 | 2.28 mg/l |
| 22 Nov 2023, 14:49 | 1.58 | 1.58 mg/l |
| 2 Oct 2023, 14:50 | 1.19 | 1.19 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.027 mg/l
Sampled 21 Aug 2026, 41 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Aug 2026, 13:23 | 0.027 | 0.027 mg/l |
| 3 Jul 2026, 09:34 | 0.042 | 0.042 mg/l |
| 19 Jun 2026, 12:37 | 0.058 | 0.058 mg/l |
| 19 May 2026, 11:48 | 0.02 | 0.02 mg/l |
| 20 Apr 2026, 13:03 | 0.039 | 0.039 mg/l |
| 4 Feb 2026, 10:35 | 0.053 | 0.053 mg/l |
| 3 Dec 2025, 10:26 | 0.063 | 0.063 mg/l |
| 10 Nov 2025, 11:24 | 0.032 | 0.032 mg/l |
| 23 Oct 2025, 11:36 | 0.03 | 0.03 mg/l |
| 3 Sep 2025, 14:49 | 0.028 | 0.028 mg/l |
| 1 Aug 2025, 10:36 | 0.051 | 0.051 mg/l |
| 16 Jul 2025, 09:55 | 0.045 | 0.045 mg/l |
| 5 Jun 2025, 12:45 | 0.04 | 0.04 mg/l |
| 16 May 2025, 13:58 | 0.043 | 0.043 mg/l |
| 16 Apr 2025, 12:11 | <0.01 | below 0.01 mg/l (not detected above this) |
| 12 Mar 2025, 11:21 | 0.054 | 0.054 mg/l |
| 10 Feb 2025, 12:15 | 0.047 | 0.047 mg/l |
| 27 Jan 2025, 11:32 | 0.14 | 0.14 mg/l |
| 4 Dec 2024, 10:15 | 0.047 | 0.047 mg/l |
| 20 Nov 2024, 14:31 | 0.11 | 0.11 mg/l |
| 14 Oct 2024, 10:48 | 0.034 | 0.034 mg/l |
| 30 Sep 2024, 13:22 | 0.11 | 0.11 mg/l |
| 19 Aug 2024, 14:18 | 0.13 | 0.13 mg/l |
| 17 Jul 2024, 13:16 | 0.074 | 0.074 mg/l |
| 17 Jun 2024, 12:19 | 0.057 | 0.057 mg/l |
| 1 Mar 2024, 13:21 | 0.12 | 0.12 mg/l |
| 29 Jan 2024, 14:42 | 0.11 | 0.11 mg/l |
| 21 Dec 2023, 15:12 | 0.043 | 0.043 mg/l |
| 22 Nov 2023, 14:49 | 0.23 | 0.23 mg/l |
| 2 Oct 2023, 14:50 | 0.34 | 0.34 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
137 µS/cm
Sampled 21 Aug 2026, 41 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Aug 2026, 13:23 | 137 | 137 µS/cm |
| 3 Jul 2026, 09:34 | 154 | 154 µS/cm |
| 19 Jun 2026, 12:37 | 170 | 170 µS/cm |
| 19 May 2026, 11:48 | 254 | 254 µS/cm |
| 20 Apr 2026, 13:03 | 195 | 195 µS/cm |
| 4 Feb 2026, 10:35 | 177 | 177 µS/cm |
| 3 Dec 2025, 10:26 | 122 | 122 µS/cm |
| 10 Nov 2025, 11:24 | 155 | 155 µS/cm |
| 23 Oct 2025, 11:36 | 175 | 175 µS/cm |
| 3 Sep 2025, 14:49 | 202 | 202 µS/cm |
| 1 Aug 2025, 10:36 | 159 | 159 µS/cm |
| 16 Jul 2025, 09:55 | 150 | 150 µS/cm |
| 5 Jun 2025, 12:45 | 185 | 185 µS/cm |
| 16 May 2025, 13:58 | 294 | 294 µS/cm |
| 16 Apr 2025, 12:11 | 322 | 322 µS/cm |
| 12 Mar 2025, 11:21 | 252 | 252 µS/cm |
| 10 Feb 2025, 12:15 | 270 | 270 µS/cm |
| 27 Jan 2025, 11:32 | 215 | 215 µS/cm |
| 4 Dec 2024, 10:15 | 172 | 172 µS/cm |
| 20 Nov 2024, 14:31 | 192 | 192 µS/cm |
| 14 Oct 2024, 10:48 | 188 | 188 µS/cm |
| 30 Sep 2024, 13:22 | 184 | 184 µS/cm |
| 19 Aug 2024, 14:18 | 197 | 197 µS/cm |
| 17 Jul 2024, 13:16 | 204 | 204 µS/cm |
| 17 Jun 2024, 12:19 | 211 | 211 µS/cm |
| 1 Mar 2024, 13:21 | 208 | 208 µS/cm |
| 29 Jan 2024, 14:42 | 192 | 192 µS/cm |
| 21 Dec 2023, 15:12 | 199 | 199 µS/cm |
| 22 Nov 2023, 14:49 | 168 | 168 µS/cm |
| 2 Oct 2023, 14:50 | 99 | 99 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 | 30 | Oct 2023 – Aug 2026 | 98.4% 21 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 30 | Oct 2023 – Aug 2026 | 9.43 mg/l 21 Aug 2026 |
| Temperature of Water 0076 | River water | 30 | Oct 2023 – Aug 2026 | 17.3 °C 21 Aug 2026 |
| pH 0061 | River water | 30 | Oct 2023 – Aug 2026 | 7.76 21 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 30 | Oct 2023 – Aug 2026 | below 0.03 mg/l 21 Aug 2026 |
| Nitrate as N 0117 | River water | 30 | Oct 2023 – Aug 2026 | 0.856 mg/l 21 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 30 | Oct 2023 – Aug 2026 | 0.027 mg/l 21 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 30 | Oct 2023 – Aug 2026 | 137 µS/cm 21 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 30 | Oct 2023 – Aug 2026 | 33 mg/l 21 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 30 | Oct 2023 – Aug 2026 | below 0.00054 mg/l 21 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 21 | Jun 2024 – May 2026 | 1.7 mg/l 19 May 2026 |
| Nitrite as N 0118 | River water | 30 | Oct 2023 – Aug 2026 | below 0.004 mg/l 21 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 30 | Oct 2023 – Aug 2026 | 0.86 mg/l 21 Aug 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.