Great Brook at Isle of Wight Bridge
EA name: GREAT BROOK AT ISLE OF WIGHT BRIDGE
Environment Agency sampling point TH-PUTR0052 · 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
- 24 Aug 2026, 09:5438 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 22 since 13 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 433300, 200800As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Great Brook
- River, by the map
- Great BrookPlaced on the river its name gives, 64 m from the line.
- Next gauge downstream
- Northmoor Lock On the River Thames · 12 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (22 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
74.3%
Sampled 24 Aug 2026, 38 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Aug 2026, 09:54 | 74.3 | 74.3% |
| 30 Jul 2026, 10:39 | 77.9 | 77.9% |
| 15 Jun 2026, 10:11 | 87.8 | 87.8% |
| 15 May 2026, 11:59 | 97.5 | 97.5% |
| 10 Apr 2026, 11:23 | 99.3 | 99.3% |
| 27 Mar 2026, 12:56 | 102.4 | 102.4% |
| 18 Feb 2026, 12:37 | 110.1 | 110.1% |
| 6 Jan 2026, 13:18 | 93.1 | 93.1% |
| 8 Dec 2025, 12:09 | 81.4 | 81.4% |
| 12 Nov 2025, 10:25 | 84.8 | 84.8% |
| 21 Oct 2025, 09:49 | 78.1 | 78.1% |
| 30 Apr 2025, 09:30 | 85.1 | 85.1% |
| 18 Mar 2025, 13:42 | 110.9 | 110.9% |
| 21 Feb 2025, 10:53 | 95.8 | 95.8% |
| 28 Jan 2025, 10:51 | 89.3 | 89.3% |
| 9 Dec 2024, 13:19 | 97 | 97% |
| 4 Nov 2024, 10:16 | 78.4 | 78.4% |
| 16 Oct 2024, 11:45 | 70.6 | 70.6% |
| 6 Sep 2024, 10:58 | 73.2 | 73.2% |
| 5 Aug 2024, 13:50 | 82.5 | 82.5% |
| 4 Jul 2024, 09:52 | 85.8 | 85.8% |
| 13 Jun 2024, 10:41 | 95.5 | 95.5% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7 mg/l
Sampled 24 Aug 2026, 38 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Aug 2026, 09:54 | 7 | 7 mg/l |
| 30 Jul 2026, 10:39 | 6.77 | 6.77 mg/l |
| 15 Jun 2026, 10:11 | 8.61 | 8.61 mg/l |
| 15 May 2026, 11:59 | 10.6 | 10.6 mg/l |
| 10 Apr 2026, 11:23 | 11 | 11 mg/l |
| 27 Mar 2026, 12:56 | 11.7 | 11.7 mg/l |
| 18 Feb 2026, 12:37 | 14.1 | 14.1 mg/l |
| 6 Jan 2026, 13:18 | 12.4 | 12.4 mg/l |
| 8 Dec 2025, 12:09 | 9.24 | 9.24 mg/l |
| 12 Nov 2025, 10:25 | 9.12 | 9.12 mg/l |
| 21 Oct 2025, 09:49 | 8.4 | 8.4 mg/l |
| 30 Apr 2025, 09:30 | 8.69 | 8.69 mg/l |
| 18 Mar 2025, 13:42 | 13.2 | 13.2 mg/l |
| 21 Feb 2025, 10:53 | 10.7 | 10.7 mg/l |
| 28 Jan 2025, 10:51 | 10.9 | 10.9 mg/l |
| 9 Dec 2024, 13:19 | 11.9 | 11.9 mg/l |
| 4 Nov 2024, 10:16 | 8.59 | 8.59 mg/l |
| 16 Oct 2024, 11:45 | 7.42 | 7.42 mg/l |
| 6 Sep 2024, 10:58 | 7.12 | 7.12 mg/l |
| 5 Aug 2024, 13:50 | 7.63 | 7.63 mg/l |
| 4 Jul 2024, 09:52 | 8.61 | 8.61 mg/l |
| 13 Jun 2024, 10:41 | 10 | 10 mg/l |
Water temperature
code 0076 · °C
18.1 °C
Sampled 24 Aug 2026, 38 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Aug 2026, 09:54 | 18.1 | 18.1 °C |
| 30 Jul 2026, 10:39 | 22.2 | 22.2 °C |
| 15 Jun 2026, 10:11 | 16.2 | 16.2 °C |
| 15 May 2026, 11:59 | 11.4 | 11.4 °C |
| 10 Apr 2026, 11:23 | 10.8 | 10.8 °C |
| 27 Mar 2026, 12:56 | 9.3 | 9.3 °C |
| 18 Feb 2026, 12:37 | 4.8 | 4.8 °C |
| 6 Jan 2026, 13:18 | 3.4 | 3.4 °C |
| 8 Dec 2025, 12:09 | 9.7 | 9.7 °C |
| 12 Nov 2025, 10:25 | 12 | 12 °C |
| 21 Oct 2025, 09:49 | 12 | 12 °C |
| 30 Apr 2025, 09:30 | 14.3 | 14.3 °C |
| 18 Mar 2025, 13:42 | 7.7 | 7.7 °C |
| 21 Feb 2025, 10:53 | 10.2 | 10.2 °C |
| 28 Jan 2025, 10:51 | 6.6 | 6.6 °C |
| 9 Dec 2024, 13:19 | 6.6 | 6.6 °C |
| 4 Nov 2024, 10:16 | 11.2 | 11.2 °C |
| 16 Oct 2024, 11:45 | 13 | 13 °C |
| 6 Sep 2024, 10:58 | 16.6 | 16.6 °C |
| 5 Aug 2024, 13:50 | 19 | 19 °C |
| 4 Jul 2024, 09:52 | 15.1 | 15.1 °C |
| 13 Jun 2024, 10:41 | 13.1 | 13.1 °C |
pH
code 0061
7.89
Sampled 24 Aug 2026, 38 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Aug 2026, 09:54 | 7.89 | 7.89 |
| 30 Jul 2026, 10:39 | 7.87 | 7.87 |
| 15 Jun 2026, 10:11 | 7.98 | 7.98 |
| 15 May 2026, 11:59 | 8.23 | 8.23 |
| 10 Apr 2026, 11:23 | 8.27 | 8.27 |
| 27 Mar 2026, 12:56 | 8.27 | 8.27 |
| 18 Feb 2026, 12:37 | 8.29 | 8.29 |
| 6 Jan 2026, 13:18 | 8.17 | 8.17 |
| 8 Dec 2025, 12:09 | 7.98 | 7.98 |
| 12 Nov 2025, 10:25 | 7.84 | 7.84 |
| 21 Oct 2025, 09:49 | 7.93 | 7.93 |
| 30 Apr 2025, 09:30 | 8.15 | 8.15 |
| 18 Mar 2025, 13:42 | 8.34 | 8.34 |
| 21 Feb 2025, 10:53 | 8.06 | 8.06 |
| 28 Jan 2025, 10:51 | 8 | 8 |
| 9 Dec 2024, 13:19 | 8.26 | 8.26 |
| 4 Nov 2024, 10:16 | 7.93 | 7.93 |
| 16 Oct 2024, 11:45 | 7.77 | 7.77 |
| 6 Sep 2024, 10:58 | 7.75 | 7.75 |
| 5 Aug 2024, 13:50 | 7.89 | 7.89 |
| 4 Jul 2024, 09:52 | 8.03 | 8.03 |
| 13 Jun 2024, 10:41 | 8.2 | 8.2 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 24 Aug 2026, 38 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Aug 2026, 09:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 30 Jul 2026, 10:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Jun 2026, 10:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 May 2026, 11:59 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Apr 2026, 11:23 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 Mar 2026, 12:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Feb 2026, 12:37 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Jan 2026, 13:18 | 0.053 | 0.053 mg/l |
| 8 Dec 2025, 12:09 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Nov 2025, 10:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Oct 2025, 09:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 30 Apr 2025, 09:30 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Mar 2025, 13:42 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Feb 2025, 10:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Jan 2025, 10:51 | 0.039 | 0.039 mg/l |
| 4 Nov 2024, 10:16 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Oct 2024, 11:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Sep 2024, 10:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Aug 2024, 13:50 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Jul 2024, 09:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Jun 2024, 10:41 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
8.99 mg/l
Sampled 24 Aug 2026, 38 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Aug 2026, 09:54 | 8.99 | 8.99 mg/l |
| 30 Jul 2026, 10:39 | 7.78 | 7.78 mg/l |
| 15 Jun 2026, 10:11 | 6.49 | 6.49 mg/l |
| 15 May 2026, 11:59 | 6.89 | 6.89 mg/l |
| 10 Apr 2026, 11:23 | 6.49 | 6.49 mg/l |
| 27 Mar 2026, 12:56 | 6.79 | 6.79 mg/l |
| 18 Feb 2026, 12:37 | 4.89 | 4.89 mg/l |
| 6 Jan 2026, 13:18 | 6.98 | 6.98 mg/l |
| 8 Dec 2025, 12:09 | 7.39 | 7.39 mg/l |
| 12 Nov 2025, 10:25 | 7.59 | 7.59 mg/l |
| 21 Oct 2025, 09:49 | 9.39 | 9.39 mg/l |
| 30 Apr 2025, 09:30 | 6.59 | 6.59 mg/l |
| 18 Mar 2025, 13:42 | 6.79 | 6.79 mg/l |
| 21 Feb 2025, 10:53 | 6.29 | 6.29 mg/l |
| 28 Jan 2025, 10:51 | 4.68 | 4.68 mg/l |
| 4 Nov 2024, 10:16 | 5.19 | 5.19 mg/l |
| 16 Oct 2024, 11:45 | 3.87 | 3.87 mg/l |
| 6 Sep 2024, 10:58 | 7.99 | 7.99 mg/l |
| 5 Aug 2024, 13:50 | 6.19 | 6.19 mg/l |
| 4 Jul 2024, 09:52 | 7.29 | 7.29 mg/l |
| 13 Jun 2024, 10:41 | 6.69 | 6.69 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.22 mg/l
Sampled 24 Aug 2026, 38 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Aug 2026, 09:54 | 0.22 | 0.22 mg/l |
| 30 Jul 2026, 10:39 | 0.16 | 0.16 mg/l |
| 15 Jun 2026, 10:11 | 0.14 | 0.14 mg/l |
| 15 May 2026, 11:59 | 0.086 | 0.086 mg/l |
| 10 Apr 2026, 11:23 | 0.046 | 0.046 mg/l |
| 27 Mar 2026, 12:56 | 0.028 | 0.028 mg/l |
| 18 Feb 2026, 12:37 | <0.01 | below 0.01 mg/l (not detected above this) |
| 6 Jan 2026, 13:18 | 0.058 | 0.058 mg/l |
| 8 Dec 2025, 12:09 | 0.071 | 0.071 mg/l |
| 12 Nov 2025, 10:25 | 0.29 | 0.29 mg/l |
| 21 Oct 2025, 09:49 | 0.35 | 0.35 mg/l |
| 30 Apr 2025, 09:30 | 0.11 | 0.11 mg/l |
| 18 Mar 2025, 13:42 | 0.042 | 0.042 mg/l |
| 21 Feb 2025, 10:53 | 0.044 | 0.044 mg/l |
| 28 Jan 2025, 10:51 | 0.085 | 0.085 mg/l |
| 4 Nov 2024, 10:16 | 0.051 | 0.051 mg/l |
| 16 Oct 2024, 11:45 | 0.027 | 0.027 mg/l |
| 6 Sep 2024, 10:58 | 0.19 | 0.19 mg/l |
| 5 Aug 2024, 13:50 | 0.14 | 0.14 mg/l |
| 4 Jul 2024, 09:52 | 0.14 | 0.14 mg/l |
| 13 Jun 2024, 10:41 | 0.092 | 0.092 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
779 µS/cm
Sampled 24 Aug 2026, 38 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Aug 2026, 09:54 | 779 | 779 µS/cm |
| 30 Jul 2026, 10:39 | 755 | 755 µS/cm |
| 15 Jun 2026, 10:11 | 641 | 641 µS/cm |
| 15 May 2026, 11:59 | 630 | 630 µS/cm |
| 10 Apr 2026, 11:23 | 614 | 614 µS/cm |
| 27 Mar 2026, 12:56 | 624 | 624 µS/cm |
| 18 Feb 2026, 12:37 | 551 | 551 µS/cm |
| 6 Jan 2026, 13:18 | 658 | 658 µS/cm |
| 8 Dec 2025, 12:09 | 624 | 624 µS/cm |
| 12 Nov 2025, 10:25 | 728 | 728 µS/cm |
| 21 Oct 2025, 09:49 | 799 | 799 µS/cm |
| 30 Apr 2025, 09:30 | 638 | 638 µS/cm |
| 18 Mar 2025, 13:42 | 635 | 635 µS/cm |
| 21 Feb 2025, 10:53 | 658 | 658 µS/cm |
| 28 Jan 2025, 10:51 | 544 | 544 µS/cm |
| 9 Dec 2024, 13:19 | 571 | 571 µS/cm |
| 4 Nov 2024, 10:16 | 645 | 645 µS/cm |
| 16 Oct 2024, 11:45 | 612 | 612 µS/cm |
| 6 Sep 2024, 10:58 | 657 | 657 µS/cm |
| 5 Aug 2024, 13:50 | 657 | 657 µS/cm |
| 4 Jul 2024, 09:52 | 648 | 648 µS/cm |
| 13 Jun 2024, 10:41 | 634 | 634 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 | 22 | Jun 2024 – Aug 2026 | 74.3% 24 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 22 | Jun 2024 – Aug 2026 | 7 mg/l 24 Aug 2026 |
| Temperature of Water 0076 | River water | 22 | Jun 2024 – Aug 2026 | 18.1 °C 24 Aug 2026 |
| pH 0061 | River water | 22 | Jun 2024 – Aug 2026 | 7.89 24 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 21 | Jun 2024 – Aug 2026 | below 0.03 mg/l 24 Aug 2026 |
| Nitrate as N 0117 | River water | 21 | Jun 2024 – Aug 2026 | 8.99 mg/l 24 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 21 | Jun 2024 – Aug 2026 | 0.22 mg/l 24 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 22 | Jun 2024 – Aug 2026 | 779 µS/cm 24 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 21 | Jun 2024 – Aug 2026 | 200 mg/l 24 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 21 | Jun 2024 – Aug 2026 | below 0.00077 mg/l 24 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 21 | Jun 2024 – Aug 2026 | below 3 mg/l 24 Aug 2026 |
| Nitrite as N 0118 | River water | 21 | Jun 2024 – Aug 2026 | 0.014 mg/l 24 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 21 | Jun 2024 – Aug 2026 | 9 mg/l 24 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.