River Yeo A30 Roadbridge
EA name: RIVER YEO A30 ROADBRIDGE
Environment Agency sampling point SW-E4003200 · 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
- 1 Sep 2026, 12:0230 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 28 since 19 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 357316, 116011As published, to the nearest 1 m. Open in a map
- River, by its own name
- Yeo
- River, by the map
- River IvelPlaced on the river its name gives, 2 m from the line.
- Next gauge downstream
- Pen Mill On the River Yeo · 0.2 km along the river
- Nearest gauge upstream
- Sherborne Lake On the River Yeo · 14 km along the riverChetnole On the River Wriggle · 15 km along the river
- Why it was sampled
- Monitoring (national agency policy) (22 samples)
Environmental monitoring statutory (EU directives) (6 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
83.6%
Sampled 1 Sep 2026, 30 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 12:02 | 83.6 | 83.6% |
| 11 Aug 2026, 12:38 | 92.7 | 92.7% |
| 3 Jul 2026, 10:43 | 91.1 | 91.1% |
| 4 Jun 2026, 09:35 | 91.1 | 91.1% |
| 13 May 2026, 11:16 | 94.8 | 94.8% |
| 20 Apr 2026, 14:02 | 102.3 | 102.3% |
| 24 Mar 2026, 08:48 | 96.9 | 96.9% |
| 9 Feb 2026, 08:43 | 90 | 90% |
| 8 Jan 2026, 09:11 | 98.7 | 98.7% |
| 5 Dec 2025, 08:29 | 97.5 | 97.5% |
| 3 Nov 2025, 09:05 | 92.1 | 92.1% |
| 7 Oct 2025, 10:14 | 89.4 | 89.4% |
| 3 Sep 2025, 10:57 | 92 | 92% |
| 11 Aug 2025, 13:16 | 99.6 | 99.6% |
| 24 Jul 2025, 11:36 | 90.6 | 90.6% |
| 20 Jun 2025, 12:13 | 93.6 | 93.6% |
| 30 May 2025, 14:08 | 85.8 | 85.8% |
| 11 Apr 2025, 10:07 | 101.3 | 101.3% |
| 7 Mar 2025, 11:17 | 97.6 | 97.6% |
| 18 Feb 2025, 08:32 | 96.8 | 96.8% |
| 29 Jan 2025, 08:40 | 93.8 | 93.8% |
| 2 Dec 2024, 09:25 | 92.1 | 92.1% |
| 18 Nov 2024, 11:51 | 96.1 | 96.1% |
| 23 Oct 2024, 09:25 | 94 | 94% |
| 24 Sep 2024, 12:48 | 91.8 | 91.8% |
| 20 Aug 2024, 11:21 | 94 | 94% |
| 17 Jul 2024, 09:11 | 94.5 | 94.5% |
| 19 Jun 2024, 12:38 | 97.8 | 97.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.04 mg/l
Sampled 1 Sep 2026, 30 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 12:02 | 8.04 | 8.04 mg/l |
| 11 Aug 2026, 12:38 | 8.66 | 8.66 mg/l |
| 3 Jul 2026, 10:43 | 8.57 | 8.57 mg/l |
| 4 Jun 2026, 09:35 | 9.22 | 9.22 mg/l |
| 13 May 2026, 11:16 | 10.1 | 10.1 mg/l |
| 20 Apr 2026, 14:02 | 11 | 11 mg/l |
| 24 Mar 2026, 08:48 | 10.9 | 10.9 mg/l |
| 9 Feb 2026, 08:43 | 10.6 | 10.6 mg/l |
| 8 Jan 2026, 09:11 | 12.4 | 12.4 mg/l |
| 5 Dec 2025, 08:29 | 11.6 | 11.6 mg/l |
| 3 Nov 2025, 09:05 | 10.1 | 10.1 mg/l |
| 7 Oct 2025, 10:14 | 9.4 | 9.4 mg/l |
| 3 Sep 2025, 10:57 | 9 | 9 mg/l |
| 11 Aug 2025, 13:16 | 9.33 | 9.33 mg/l |
| 24 Jul 2025, 11:36 | 8.47 | 8.47 mg/l |
| 20 Jun 2025, 12:13 | 8.71 | 8.71 mg/l |
| 30 May 2025, 14:08 | 8.25 | 8.25 mg/l |
| 11 Apr 2025, 10:07 | 11.2 | 11.2 mg/l |
| 7 Mar 2025, 11:17 | 11.2 | 11.2 mg/l |
| 18 Feb 2025, 08:32 | 12.3 | 12.3 mg/l |
| 29 Jan 2025, 08:40 | 11.5 | 11.5 mg/l |
| 2 Dec 2024, 09:25 | 10.5 | 10.5 mg/l |
| 18 Nov 2024, 11:51 | 10.9 | 10.9 mg/l |
| 23 Oct 2024, 09:25 | 10.1 | 10.1 mg/l |
| 24 Sep 2024, 12:48 | 9.25 | 9.25 mg/l |
| 20 Aug 2024, 11:21 | 9.31 | 9.31 mg/l |
| 17 Jul 2024, 09:11 | 9.46 | 9.46 mg/l |
| 19 Jun 2024, 12:38 | 9.79 | 9.79 mg/l |
Water temperature
code 0076 · °C
17.1 °C
Sampled 1 Sep 2026, 30 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 12:02 | 17.1 | 17.1 °C |
| 11 Aug 2026, 12:38 | 18.5 | 18.5 °C |
| 3 Jul 2026, 10:43 | 18.2 | 18.2 °C |
| 4 Jun 2026, 09:35 | 14.7 | 14.7 °C |
| 13 May 2026, 11:16 | 12.5 | 12.5 °C |
| 20 Apr 2026, 14:02 | 11.9 | 11.9 °C |
| 24 Mar 2026, 08:48 | 10.2 | 10.2 °C |
| 9 Feb 2026, 08:43 | 8.3 | 8.3 °C |
| 8 Jan 2026, 09:11 | 5.7 | 5.7 °C |
| 5 Dec 2025, 08:29 | 7.6 | 7.6 °C |
| 3 Nov 2025, 09:05 | 11.1 | 11.1 °C |
| 7 Oct 2025, 10:14 | 13 | 13 °C |
| 3 Sep 2025, 10:57 | 16.3 | 16.3 °C |
| 11 Aug 2025, 13:16 | 18.4 | 18.4 °C |
| 24 Jul 2025, 11:36 | 18.5 | 18.5 °C |
| 20 Jun 2025, 12:13 | 18.7 | 18.7 °C |
| 30 May 2025, 14:08 | 17.1 | 17.1 °C |
| 11 Apr 2025, 10:07 | 10.7 | 10.7 °C |
| 7 Mar 2025, 11:17 | 9.2 | 9.2 °C |
| 18 Feb 2025, 08:32 | 5.3 | 5.3 °C |
| 29 Jan 2025, 08:40 | 6.6 | 6.6 °C |
| 2 Dec 2024, 09:25 | 9.6 | 9.6 °C |
| 18 Nov 2024, 11:51 | 9.7 | 9.7 °C |
| 23 Oct 2024, 09:25 | 12 | 12 °C |
| 24 Sep 2024, 12:48 | 14.9 | 14.9 °C |
| 20 Aug 2024, 11:21 | 15.7 | 15.7 °C |
| 17 Jul 2024, 09:11 | 15.2 | 15.2 °C |
| 19 Jun 2024, 12:38 | 15.2 | 15.2 °C |
pH
code 0061
7.84
Sampled 1 Sep 2026, 30 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 12:02 | 7.84 | 7.84 |
| 11 Aug 2026, 12:38 | 7.91 | 7.91 |
| 3 Jul 2026, 10:43 | 8.1 | 8.1 |
| 4 Jun 2026, 09:35 | 8.21 | 8.21 |
| 13 May 2026, 11:16 | 8.15 | 8.15 |
| 20 Apr 2026, 14:02 | 8.22 | 8.22 |
| 24 Mar 2026, 08:48 | 8.27 | 8.27 |
| 9 Feb 2026, 08:43 | 8.21 | 8.21 |
| 8 Jan 2026, 09:11 | 8.13 | 8.13 |
| 5 Dec 2025, 08:29 | 8.04 | 8.04 |
| 3 Nov 2025, 09:05 | 7.97 | 7.97 |
| 7 Oct 2025, 10:14 | 8.04 | 8.04 |
| 3 Sep 2025, 10:57 | 8.21 | 8.21 |
| 11 Aug 2025, 13:16 | 8.09 | 8.09 |
| 24 Jul 2025, 11:36 | 7.99 | 7.99 |
| 20 Jun 2025, 12:13 | 7.97 | 7.97 |
| 30 May 2025, 14:08 | 8.01 | 8.01 |
| 11 Apr 2025, 10:07 | 8.32 | 8.32 |
| 7 Mar 2025, 11:17 | 8.24 | 8.24 |
| 18 Feb 2025, 08:32 | 8.21 | 8.21 |
| 29 Jan 2025, 08:40 | 7.91 | 7.91 |
| 2 Dec 2024, 09:25 | 8.34 | 8.34 |
| 18 Nov 2024, 11:51 | 8.31 | 8.31 |
| 23 Oct 2024, 09:25 | 8.05 | 8.05 |
| 24 Sep 2024, 12:48 | 8.25 | 8.25 |
| 20 Aug 2024, 11:21 | 8.16 | 8.16 |
| 17 Jul 2024, 09:11 | 8.12 | 8.12 |
| 19 Jun 2024, 12:38 | 8.1 | 8.1 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.042 mg/l
Sampled 1 Sep 2026, 30 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 12:02 | 0.042 | 0.042 mg/l |
| 11 Aug 2026, 12:38 | 0.074 | 0.074 mg/l |
| 3 Jul 2026, 10:43 | 0.07 | 0.07 mg/l |
| 4 Jun 2026, 09:35 | 0.11 | 0.11 mg/l |
| 13 May 2026, 11:16 | 0.24 | 0.24 mg/l |
| 20 Apr 2026, 14:02 | 0.14 | 0.14 mg/l |
| 24 Mar 2026, 08:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Feb 2026, 08:43 | 0.073 | 0.073 mg/l |
| 8 Jan 2026, 09:11 | 0.11 | 0.11 mg/l |
| 5 Dec 2025, 08:29 | 0.072 | 0.072 mg/l |
| 3 Nov 2025, 09:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Oct 2025, 10:14 | 0.045 | 0.045 mg/l |
| 3 Sep 2025, 10:57 | 0.069 | 0.069 mg/l |
| 11 Aug 2025, 13:16 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Jul 2025, 11:36 | 0.041 | 0.041 mg/l |
| 20 Jun 2025, 12:13 | 0.073 | 0.073 mg/l |
| 30 May 2025, 14:08 | 0.076 | 0.076 mg/l |
| 11 Apr 2025, 10:07 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Mar 2025, 11:17 | 0.051 | 0.051 mg/l |
| 18 Feb 2025, 08:32 | 0.052 | 0.052 mg/l |
| 29 Jan 2025, 08:40 | 0.14 | 0.14 mg/l |
| 2 Dec 2024, 09:25 | 0.057 | 0.057 mg/l |
| 18 Nov 2024, 11:51 | 0.033 | 0.033 mg/l |
| 23 Oct 2024, 09:25 | 0.041 | 0.041 mg/l |
| 24 Sep 2024, 12:48 | 0.22 | 0.22 mg/l |
| 20 Aug 2024, 11:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jul 2024, 09:11 | 0.036 | 0.036 mg/l |
| 19 Jun 2024, 12:38 | 0.031 | 0.031 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
3.58 mg/l
Sampled 1 Sep 2026, 30 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 12:02 | 3.58 | 3.58 mg/l |
| 11 Aug 2026, 12:38 | 4.28 | 4.28 mg/l |
| 3 Jul 2026, 10:43 | 4.68 | 4.68 mg/l |
| 4 Jun 2026, 09:35 | 3.65 | 3.65 mg/l |
| 13 May 2026, 11:16 | 4.77 | 4.77 mg/l |
| 20 Apr 2026, 14:02 | 3.88 | 3.88 mg/l |
| 24 Mar 2026, 08:48 | 3.79 | 3.79 mg/l |
| 9 Feb 2026, 08:43 | 2.29 | 2.29 mg/l |
| 8 Jan 2026, 09:11 | 5.36 | 5.36 mg/l |
| 5 Dec 2025, 08:29 | 4.78 | 4.78 mg/l |
| 3 Nov 2025, 09:05 | 6.77 | 6.77 mg/l |
| 7 Oct 2025, 10:14 | 3.28 | 3.28 mg/l |
| 3 Sep 2025, 10:57 | 2.99 | 2.99 mg/l |
| 11 Aug 2025, 13:16 | 3.89 | 3.89 mg/l |
| 24 Jul 2025, 11:36 | 4.08 | 4.08 mg/l |
| 20 Jun 2025, 12:13 | 4.77 | 4.77 mg/l |
| 30 May 2025, 14:08 | 4.96 | 4.96 mg/l |
| 11 Apr 2025, 10:07 | 4.28 | 4.28 mg/l |
| 7 Mar 2025, 11:17 | 4.27 | 4.27 mg/l |
| 18 Feb 2025, 08:32 | 3.87 | 3.87 mg/l |
| 29 Jan 2025, 08:40 | 4.08 | 4.08 mg/l |
| 2 Dec 2024, 09:25 | 2.68 | 2.68 mg/l |
| 18 Nov 2024, 11:51 | 3.98 | 3.98 mg/l |
| 23 Oct 2024, 09:25 | 2.97 | 2.97 mg/l |
| 24 Sep 2024, 12:48 | 4.15 | 4.15 mg/l |
| 20 Aug 2024, 11:21 | 4.19 | 4.19 mg/l |
| 17 Jul 2024, 09:11 | 3.48 | 3.48 mg/l |
| 19 Jun 2024, 12:38 | 4.67 | 4.67 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.19 mg/l
Sampled 1 Sep 2026, 30 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 12:02 | 0.19 | 0.19 mg/l |
| 11 Aug 2026, 12:38 | 0.19 | 0.19 mg/l |
| 3 Jul 2026, 10:43 | 0.19 | 0.19 mg/l |
| 4 Jun 2026, 09:35 | 0.15 | 0.15 mg/l |
| 13 May 2026, 11:16 | 0.14 | 0.14 mg/l |
| 20 Apr 2026, 14:02 | 0.092 | 0.092 mg/l |
| 24 Mar 2026, 08:48 | 0.036 | 0.036 mg/l |
| 9 Feb 2026, 08:43 | 0.094 | 0.094 mg/l |
| 8 Jan 2026, 09:11 | 0.093 | 0.093 mg/l |
| 5 Dec 2025, 08:29 | 0.089 | 0.089 mg/l |
| 3 Nov 2025, 09:05 | 0.36 | 0.36 mg/l |
| 7 Oct 2025, 10:14 | 0.17 | 0.17 mg/l |
| 3 Sep 2025, 10:57 | 0.17 | 0.17 mg/l |
| 11 Aug 2025, 13:16 | 0.21 | 0.21 mg/l |
| 24 Jul 2025, 11:36 | 0.23 | 0.23 mg/l |
| 20 Jun 2025, 12:13 | 0.21 | 0.21 mg/l |
| 30 May 2025, 14:08 | 0.19 | 0.19 mg/l |
| 11 Apr 2025, 10:07 | 0.047 | 0.047 mg/l |
| 7 Mar 2025, 11:17 | 0.068 | 0.068 mg/l |
| 18 Feb 2025, 08:32 | 0.074 | 0.074 mg/l |
| 29 Jan 2025, 08:40 | 0.17 | 0.17 mg/l |
| 2 Dec 2024, 09:25 | 0.11 | 0.11 mg/l |
| 18 Nov 2024, 11:51 | 0.11 | 0.11 mg/l |
| 23 Oct 2024, 09:25 | 0.11 | 0.11 mg/l |
| 24 Sep 2024, 12:48 | 0.21 | 0.21 mg/l |
| 20 Aug 2024, 11:21 | 0.17 | 0.17 mg/l |
| 17 Jul 2024, 09:11 | 0.14 | 0.14 mg/l |
| 19 Jun 2024, 12:38 | 0.13 | 0.13 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
603 µS/cm
Sampled 1 Sep 2026, 30 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 12:02 | 603 | 603 µS/cm |
| 11 Aug 2026, 12:38 | 675 | 675 µS/cm |
| 3 Jul 2026, 10:43 | 677 | 677 µS/cm |
| 4 Jun 2026, 09:35 | 632 | 632 µS/cm |
| 13 May 2026, 11:16 | 644 | 644 µS/cm |
| 20 Apr 2026, 14:02 | 619 | 619 µS/cm |
| 24 Mar 2026, 08:48 | 639 | 639 µS/cm |
| 9 Feb 2026, 08:43 | 417 | 417 µS/cm |
| 8 Jan 2026, 09:11 | 697 | 697 µS/cm |
| 5 Dec 2025, 08:29 | 497 | 497 µS/cm |
| 3 Nov 2025, 09:05 | 579 | 579 µS/cm |
| 7 Oct 2025, 10:14 | 633 | 633 µS/cm |
| 3 Sep 2025, 10:57 | 542 | 542 µS/cm |
| 11 Aug 2025, 13:16 | 662 | 662 µS/cm |
| 24 Jul 2025, 11:36 | 639 | 639 µS/cm |
| 20 Jun 2025, 12:13 | 677 | 677 µS/cm |
| 30 May 2025, 14:08 | 670 | 670 µS/cm |
| 11 Apr 2025, 10:07 | 618 | 618 µS/cm |
| 7 Mar 2025, 11:17 | 631 | 631 µS/cm |
| 18 Feb 2025, 08:32 | 632 | 632 µS/cm |
| 29 Jan 2025, 08:40 | 499 | 499 µS/cm |
| 2 Dec 2024, 09:25 | 510 | 510 µS/cm |
| 18 Nov 2024, 11:51 | 647 | 647 µS/cm |
| 23 Oct 2024, 09:25 | 578 | 578 µS/cm |
| 24 Sep 2024, 12:48 | 805 | 805 µS/cm |
| 20 Aug 2024, 11:21 | 670 | 670 µS/cm |
| 17 Jul 2024, 09:11 | 622 | 622 µS/cm |
| 19 Jun 2024, 12:38 | 870 | 870 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 | 28 | Jun 2024 – Sep 2026 | 83.6% 1 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 28 | Jun 2024 – Sep 2026 | 8.04 mg/l 1 Sep 2026 |
| Temperature of Water 0076 | River water | 28 | Jun 2024 – Sep 2026 | 17.1 °C 1 Sep 2026 |
| pH 0061 | River water | 28 | Jun 2024 – Sep 2026 | 7.84 1 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 28 | Jun 2024 – Sep 2026 | 0.042 mg/l 1 Sep 2026 |
| Nitrate as N 0117 | River water | 28 | Jun 2024 – Sep 2026 | 3.58 mg/l 1 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 28 | Jun 2024 – Sep 2026 | 0.19 mg/l 1 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 28 | Jun 2024 – Sep 2026 | 603 µS/cm 1 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 28 | Jun 2024 – Sep 2026 | 200 mg/l 1 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 28 | Jun 2024 – Sep 2026 | 0.0009 mg/l 1 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 23 | Jun 2024 – May 2026 | 3.3 mg/l 13 May 2026 |
| Nitrite as N 0118 | River water | 28 | Jun 2024 – Sep 2026 | 0.019 mg/l 1 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 28 | Jun 2024 – Sep 2026 | 3.6 mg/l 1 Sep 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.