Tributary of the River Yeo
EA name: TRIB OF THE RIVER YEO
Environment Agency sampling point SW-60260025 · 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
- 14 Jul 2026, 08:473 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 31 since 20 Jun 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 367407, 122376As published, to the nearest 1 m. Open in a map
- River, by its own name
- Yeo
- River, by the map
- An unnamed streamPlaced by position alone (the only river line close by), 0 m from the line.
- Next gauge downstream
- Sherborne Lake On the River Yeo · 12 km along the river
- Why it was sampled
- Monitoring (national agency policy) (31 samples)
4 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
47.7%
Sampled 21 May 2026, 4 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 09:14 | 47.7 | 47.7% |
| 29 Apr 2026, 11:39 | 78.1 | 78.1% |
| 9 Apr 2026, 11:17 | 73.7 | 73.7% |
| 27 Mar 2026, 13:34 | 83.3 | 83.3% |
| 12 Mar 2026, 10:20 | 72.6 | 72.6% |
| 25 Feb 2026, 11:35 | 78.9 | 78.9% |
| 12 Feb 2026, 09:07 | 93.4 | 93.4% |
| 29 Jan 2026, 12:07 | 78.3 | 78.3% |
| 14 Jan 2026, 09:33 | 90.5 | 90.5% |
| 15 Dec 2025, 09:23 | 82.5 | 82.5% |
| 10 Dec 2025, 12:07 | 71 | 71% |
| 20 Nov 2025, 13:57 | 63.9 | 63.9% |
| 3 Nov 2025, 09:58 | 41.8 | 41.8% |
| 7 Oct 2025, 10:40 | 11.4 | 11.4% |
| 6 Aug 2025, 14:35 | 34.2 | 34.2% |
| 30 May 2025, 10:56 | 62.6 | 62.6% |
| 9 Apr 2025, 12:19 | 75.8 | 75.8% |
| 7 Mar 2025, 10:24 | 82.2 | 82.2% |
| 18 Feb 2025, 11:03 | 84.5 | 84.5% |
| 24 Jan 2025, 09:08 | 85.7 | 85.7% |
| 2 Dec 2024, 13:26 | 83.6 | 83.6% |
| 18 Nov 2024, 12:25 | 79.7 | 79.7% |
| 18 Oct 2024, 13:52 | 13.1 | 13.1% |
| 27 Sep 2024, 12:27 | 66.1 | 66.1% |
| 30 Aug 2024, 14:43 | 30.2 | 30.2% |
| 24 Jul 2024, 12:54 | 70.7 | 70.7% |
| 20 Jun 2024, 11:19 | 72.6 | 72.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
5.07 mg/l
Sampled 21 May 2026, 4 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 09:14 | 5.07 | 5.07 mg/l |
| 29 Apr 2026, 11:39 | 8.76 | 8.76 mg/l |
| 9 Apr 2026, 11:17 | 8.05 | 8.05 mg/l |
| 27 Mar 2026, 13:34 | 9.38 | 9.38 mg/l |
| 12 Mar 2026, 10:20 | 8.38 | 8.38 mg/l |
| 25 Feb 2026, 11:35 | 8.87 | 8.87 mg/l |
| 12 Feb 2026, 09:07 | 10.8 | 10.8 mg/l |
| 29 Jan 2026, 12:07 | 9.44 | 9.44 mg/l |
| 14 Jan 2026, 09:33 | 11.3 | 11.3 mg/l |
| 15 Dec 2025, 09:23 | 9.52 | 9.52 mg/l |
| 10 Dec 2025, 12:07 | 7.96 | 7.96 mg/l |
| 20 Nov 2025, 13:57 | 7.71 | 7.71 mg/l |
| 3 Nov 2025, 09:58 | 4.55 | 4.55 mg/l |
| 7 Oct 2025, 10:40 | 1.23 | 1.23 mg/l |
| 6 Aug 2025, 14:35 | 3.35 | 3.35 mg/l |
| 30 May 2025, 10:56 | 6.27 | 6.27 mg/l |
| 9 Apr 2025, 12:19 | 8.96 | 8.96 mg/l |
| 7 Mar 2025, 10:24 | 9.46 | 9.46 mg/l |
| 18 Feb 2025, 11:03 | 10.7 | 10.7 mg/l |
| 24 Jan 2025, 09:08 | 10.2 | 10.2 mg/l |
| 2 Dec 2024, 13:26 | 9.55 | 9.55 mg/l |
| 18 Nov 2024, 12:25 | 9 | 9 mg/l |
| 18 Oct 2024, 13:52 | 1.37 | 1.37 mg/l |
| 27 Sep 2024, 12:27 | 6.92 | 6.92 mg/l |
| 30 Aug 2024, 14:43 | 3.09 | 3.09 mg/l |
| 24 Jul 2024, 12:54 | 6.99 | 6.99 mg/l |
| 20 Jun 2024, 11:19 | 7.45 | 7.45 mg/l |
Water temperature
code 0076 · °C
12.5 °C
Sampled 21 May 2026, 4 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 09:14 | 12.5 | 12.5 °C |
| 29 Apr 2026, 11:39 | 10.2 | 10.2 °C |
| 9 Apr 2026, 11:17 | 11.3 | 11.3 °C |
| 27 Mar 2026, 13:34 | 10 | 10 °C |
| 12 Mar 2026, 10:20 | 9 | 9 °C |
| 25 Feb 2026, 11:35 | 10.1 | 10.1 °C |
| 12 Feb 2026, 09:07 | 8.9 | 8.9 °C |
| 29 Jan 2026, 12:07 | 7.2 | 7.2 °C |
| 14 Jan 2026, 09:33 | 6 | 6 °C |
| 15 Dec 2025, 09:23 | 9 | 9 °C |
| 10 Dec 2025, 12:07 | 10.2 | 10.2 °C |
| 20 Nov 2025, 13:57 | 7.2 | 7.2 °C |
| 3 Nov 2025, 09:58 | 11.5 | 11.5 °C |
| 7 Oct 2025, 10:40 | 12 | 12 °C |
| 6 Aug 2025, 14:35 | 16.2 | 16.2 °C |
| 30 May 2025, 10:56 | 15.2 | 15.2 °C |
| 9 Apr 2025, 12:19 | 8 | 8 °C |
| 7 Mar 2025, 10:24 | 9.1 | 9.1 °C |
| 18 Feb 2025, 11:03 | 5.3 | 5.3 °C |
| 24 Jan 2025, 09:08 | 7.8 | 7.8 °C |
| 2 Dec 2024, 13:26 | 9.4 | 9.4 °C |
| 18 Nov 2024, 12:25 | 9.9 | 9.9 °C |
| 18 Oct 2024, 13:52 | 13.1 | 13.1 °C |
| 27 Sep 2024, 12:27 | 13.2 | 13.2 °C |
| 30 Aug 2024, 14:43 | 14.2 | 14.2 °C |
| 24 Jul 2024, 12:54 | 15.8 | 15.8 °C |
| 20 Jun 2024, 11:19 | 14.1 | 14.1 °C |
pH
code 0061
7.69
Sampled 21 May 2026, 4 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 09:14 | 7.69 | 7.69 |
| 29 Apr 2026, 11:39 | 7.83 | 7.83 |
| 9 Apr 2026, 11:17 | 7.74 | 7.74 |
| 27 Mar 2026, 13:34 | 7.62 | 7.62 |
| 12 Mar 2026, 10:20 | 7.72 | 7.72 |
| 25 Feb 2026, 11:35 | 7.59 | 7.59 |
| 12 Feb 2026, 09:07 | 8.14 | 8.14 |
| 29 Jan 2026, 12:07 | 7.67 | 7.67 |
| 14 Jan 2026, 09:33 | 8.16 | 8.16 |
| 15 Dec 2025, 09:23 | 8.01 | 8.01 |
| 10 Dec 2025, 12:07 | 7.51 | 7.51 |
| 20 Nov 2025, 13:57 | 7.77 | 7.77 |
| 3 Nov 2025, 09:58 | 7.72 | 7.72 |
| 7 Oct 2025, 10:40 | 7.73 | 7.73 |
| 6 Aug 2025, 14:35 | 7.1 | 7.1 |
| 30 May 2025, 10:56 | 7.78 | 7.78 |
| 9 Apr 2025, 12:19 | 7.79 | 7.79 |
| 7 Mar 2025, 10:24 | 7.8 | 7.8 |
| 18 Feb 2025, 11:03 | 7.64 | 7.64 |
| 24 Jan 2025, 09:08 | 7.8 | 7.8 |
| 2 Dec 2024, 13:26 | 8.01 | 8.01 |
| 18 Nov 2024, 12:25 | 8.11 | 8.11 |
| 18 Oct 2024, 13:52 | 7.6 | 7.6 |
| 27 Sep 2024, 12:27 | 7.38 | 7.38 |
| 30 Aug 2024, 14:43 | 7.69 | 7.69 |
| 24 Jul 2024, 12:54 | 7.76 | 7.76 |
| 20 Jun 2024, 11:19 | 7.66 | 7.66 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.26 mg/l
Sampled 21 May 2026, 4 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 09:14 | 0.26 | 0.26 mg/l |
| 29 Apr 2026, 11:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Apr 2026, 11:17 | 0.042 | 0.042 mg/l |
| 27 Mar 2026, 13:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Mar 2026, 10:20 | 0.13 | 0.13 mg/l |
| 25 Feb 2026, 11:35 | 0.17 | 0.17 mg/l |
| 12 Feb 2026, 09:07 | 0.09 | 0.09 mg/l |
| 29 Jan 2026, 12:07 | 0.094 | 0.094 mg/l |
| 14 Jan 2026, 09:33 | 0.054 | 0.054 mg/l |
| 15 Dec 2025, 09:23 | 0.052 | 0.052 mg/l |
| 10 Dec 2025, 12:07 | 0.19 | 0.19 mg/l |
| 20 Nov 2025, 13:57 | 0.28 | 0.28 mg/l |
| 3 Nov 2025, 09:58 | 9.1 | 9.1 mg/l |
| 7 Oct 2025, 10:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Aug 2025, 14:35 | 1.6 | 1.6 mg/l |
| 30 May 2025, 10:56 | 0.16 | 0.16 mg/l |
| 9 Apr 2025, 12:19 | 0.11 | 0.11 mg/l |
| 7 Mar 2025, 10:24 | 0.13 | 0.13 mg/l |
| 18 Feb 2025, 11:03 | 0.2 | 0.2 mg/l |
| 24 Jan 2025, 09:08 | 1.1 | 1.1 mg/l |
| 2 Dec 2024, 13:26 | 0.12 | 0.12 mg/l |
| 18 Nov 2024, 12:25 | 3 | 3 mg/l |
| 18 Oct 2024, 13:52 | 0.073 | 0.073 mg/l |
| 27 Sep 2024, 12:27 | 0.4 | 0.4 mg/l |
| 30 Aug 2024, 14:43 | 0.73 | 0.73 mg/l |
| 24 Jul 2024, 12:54 | 0.076 | 0.076 mg/l |
| 20 Jun 2024, 11:19 | 0.077 | 0.077 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.01 mg/l
Sampled 21 May 2026, 4 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 09:14 | 1.01 | 1.01 mg/l |
| 29 Apr 2026, 11:39 | 1.68 | 1.68 mg/l |
| 9 Apr 2026, 11:17 | 2.07 | 2.07 mg/l |
| 27 Mar 2026, 13:34 | 3.38 | 3.38 mg/l |
| 12 Mar 2026, 10:20 | 3.85 | 3.85 mg/l |
| 25 Feb 2026, 11:35 | 4.65 | 4.65 mg/l |
| 12 Feb 2026, 09:07 | 5.87 | 5.87 mg/l |
| 29 Jan 2026, 12:07 | 6.28 | 6.28 mg/l |
| 14 Jan 2026, 09:33 | 3.98 | 3.98 mg/l |
| 15 Dec 2025, 09:23 | 8.44 | 8.44 mg/l |
| 10 Dec 2025, 12:07 | 13.9 | 13.9 mg/l |
| 20 Nov 2025, 13:57 | 12.7 | 12.7 mg/l |
| 3 Nov 2025, 09:58 | 0.302 | 0.302 mg/l |
| 7 Oct 2025, 10:40 | <0.196 | below 0.196 mg/l (not detected above this) |
| 6 Aug 2025, 14:35 | 0.225 | 0.225 mg/l |
| 30 May 2025, 10:56 | 0.655 | 0.655 mg/l |
| 9 Apr 2025, 12:19 | 1.97 | 1.97 mg/l |
| 7 Mar 2025, 10:24 | 2.37 | 2.37 mg/l |
| 18 Feb 2025, 11:03 | 2.47 | 2.47 mg/l |
| 24 Jan 2025, 09:08 | 1.67 | 1.67 mg/l |
| 2 Dec 2024, 13:26 | 1.78 | 1.78 mg/l |
| 18 Nov 2024, 12:25 | 2.39 | 2.39 mg/l |
| 18 Oct 2024, 13:52 | 2.56 | 2.56 mg/l |
| 27 Sep 2024, 12:27 | 4.84 | 4.84 mg/l |
| 30 Aug 2024, 14:43 | 1.14 | 1.14 mg/l |
| 24 Jul 2024, 12:54 | 1.56 | 1.56 mg/l |
| 20 Jun 2024, 11:19 | 1.66 | 1.66 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.54 mg/l
Sampled 21 May 2026, 4 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 09:14 | 0.54 | 0.54 mg/l |
| 29 Apr 2026, 11:39 | 0.22 | 0.22 mg/l |
| 9 Apr 2026, 11:17 | 0.22 | 0.22 mg/l |
| 27 Mar 2026, 13:34 | 0.14 | 0.14 mg/l |
| 12 Mar 2026, 10:20 | 0.14 | 0.14 mg/l |
| 25 Feb 2026, 11:35 | 0.12 | 0.12 mg/l |
| 12 Feb 2026, 09:07 | 0.12 | 0.12 mg/l |
| 29 Jan 2026, 12:07 | 0.12 | 0.12 mg/l |
| 14 Jan 2026, 09:33 | 0.08 | 0.08 mg/l |
| 15 Dec 2025, 09:23 | 0.068 | 0.068 mg/l |
| 10 Dec 2025, 12:07 | 0.14 | 0.14 mg/l |
| 20 Nov 2025, 13:57 | 0.13 | 0.13 mg/l |
| 3 Nov 2025, 09:58 | 0.69 | 0.69 mg/l |
| 7 Oct 2025, 10:40 | 1.2 | 1.2 mg/l |
| 6 Aug 2025, 14:35 | 0.32 | 0.32 mg/l |
| 30 May 2025, 10:56 | 0.48 | 0.48 mg/l |
| 9 Apr 2025, 12:19 | 0.16 | 0.16 mg/l |
| 7 Mar 2025, 10:24 | 0.11 | 0.11 mg/l |
| 18 Feb 2025, 11:03 | 0.11 | 0.11 mg/l |
| 24 Jan 2025, 09:08 | 0.46 | 0.46 mg/l |
| 2 Dec 2024, 13:26 | 0.14 | 0.14 mg/l |
| 18 Nov 2024, 12:25 | 0.54 | 0.54 mg/l |
| 18 Oct 2024, 13:52 | 0.13 | 0.13 mg/l |
| 27 Sep 2024, 12:27 | 0.26 | 0.26 mg/l |
| 30 Aug 2024, 14:43 | 0.46 | 0.46 mg/l |
| 24 Jul 2024, 12:54 | 0.22 | 0.22 mg/l |
| 20 Jun 2024, 11:19 | 0.16 | 0.16 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
834 µS/cm
Sampled 21 May 2026, 4 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 09:14 | 834 | 834 µS/cm |
| 29 Apr 2026, 11:39 | 750 | 750 µS/cm |
| 9 Apr 2026, 11:17 | 725 | 725 µS/cm |
| 27 Mar 2026, 13:34 | 725 | 725 µS/cm |
| 12 Mar 2026, 10:20 | 695 | 695 µS/cm |
| 25 Feb 2026, 11:35 | 664 | 664 µS/cm |
| 12 Feb 2026, 09:07 | 427 | 427 µS/cm |
| 29 Jan 2026, 12:07 | 590 | 590 µS/cm |
| 14 Jan 2026, 09:33 | 529 | 529 µS/cm |
| 15 Dec 2025, 09:23 | 477 | 477 µS/cm |
| 10 Dec 2025, 12:07 | 691 | 691 µS/cm |
| 20 Nov 2025, 13:57 | 810 | 810 µS/cm |
| 3 Nov 2025, 09:58 | 877 | 877 µS/cm |
| 7 Oct 2025, 10:40 | 794 | 794 µS/cm |
| 6 Aug 2025, 14:35 | 802 | 802 µS/cm |
| 30 May 2025, 10:56 | 797 | 797 µS/cm |
| 9 Apr 2025, 12:19 | 748 | 748 µS/cm |
| 7 Mar 2025, 10:24 | 734 | 734 µS/cm |
| 18 Feb 2025, 11:03 | 743 | 743 µS/cm |
| 24 Jan 2025, 09:08 | 341 | 341 µS/cm |
| 2 Dec 2024, 13:26 | 497 | 497 µS/cm |
| 18 Nov 2024, 12:25 | 619 | 619 µS/cm |
| 18 Oct 2024, 13:52 | 663 | 663 µS/cm |
| 27 Sep 2024, 12:27 | 616 | 616 µS/cm |
| 30 Aug 2024, 14:43 | 934 | 934 µS/cm |
| 24 Jul 2024, 12:54 | 802 | 802 µS/cm |
| 20 Jun 2024, 11:19 | 763 | 763 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 | 27 | Jun 2024 – May 2026 | 47.7% 21 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 27 | Jun 2024 – May 2026 | 5.07 mg/l 21 May 2026 |
| Temperature of Water 0076 | River water | 27 | Jun 2024 – May 2026 | 12.5 °C 21 May 2026 |
| pH 0061 | River water | 27 | Jun 2024 – May 2026 | 7.69 21 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 27 | Jun 2024 – May 2026 | 0.26 mg/l 21 May 2026 |
| Nitrate as N 0117 | River water | 27 | Jun 2024 – May 2026 | 1.01 mg/l 21 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 27 | Jun 2024 – May 2026 | 0.54 mg/l 21 May 2026 |
| Conductivity at 25 C 0077 | River water | 27 | Jun 2024 – May 2026 | 834 µS/cm 21 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 27 | Jun 2024 – May 2026 | 360 mg/l 21 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 27 | Jun 2024 – May 2026 | 0.00282 mg/l 21 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 25 | Jun 2024 – May 2026 | 4.2 mg/l 21 May 2026 |
| Nitrite as N 0118 | River water | 27 | Jun 2024 – May 2026 | 0.094 mg/l 21 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 27 | Jun 2024 – May 2026 | 1.1 mg/l 21 May 2026 |
| No flow /No sample 7668 | River water | 4 | Jun 2025 – Jul 2026 | No flow/discharge at sampling point 14 Jul 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.