Bear Brook above River Thame
EA name: BEAR BROOK ABOVE RIVER THAME
Environment Agency sampling point TH-PTAR0003 · 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
- 28 Aug 2026, 12:2134 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 28 since 27 Dec 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 478600, 214600As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Bear Brook
- River, by the map
- Bear BrookPlaced on the river its name gives, 10 m from the line.
- Next gauge downstream
- None tracedThe map stops before any gauge.
- Nearest gauge upstream
- Aylesbury On the Bear Brook · 4.9 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (28 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
60.4%
Sampled 28 Aug 2026, 34 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 Aug 2026, 12:21 | 60.4 | 60.4% |
| 29 Jul 2026, 13:20 | 81.9 | 81.9% |
| 15 Jun 2026, 10:23 | 85.4 | 85.4% |
| 27 May 2026, 12:04 | 71.9 | 71.9% |
| 17 Apr 2026, 09:43 | 86.4 | 86.4% |
| 6 Mar 2026, 11:15 | 96 | 96% |
| 6 Feb 2026, 13:23 | 91.3 | 91.3% |
| 5 Jan 2026, 11:59 | 93.8 | 93.8% |
| 1 Dec 2025, 10:53 | 84.3 | 84.3% |
| 10 Nov 2025, 13:06 | 72.2 | 72.2% |
| 22 Oct 2025, 09:25 | 79.7 | 79.7% |
| 26 Sep 2025, 12:30 | 88.6 | 88.6% |
| 11 Aug 2025, 10:21 | 90.9 | 90.9% |
| 31 Jul 2025, 13:49 | 80.2 | 80.2% |
| 9 Jun 2025, 09:55 | 84.6 | 84.6% |
| 15 May 2025, 09:10 | 84.4 | 84.4% |
| 30 Apr 2025, 10:02 | 92.2 | 92.2% |
| 13 Mar 2025, 12:14 | 106.2 | 106.2% |
| 10 Feb 2025, 10:31 | 95.9 | 95.9% |
| 15 Jan 2025, 12:34 | 98.1 | 98.1% |
| 4 Dec 2024, 10:18 | 93.7 | 93.7% |
| 14 Nov 2024, 12:29 | 88.4 | 88.4% |
| 2 Oct 2024, 10:44 | 82.1 | 82.1% |
| 10 Sep 2024, 10:38 | 85.7 | 85.7% |
| 15 Aug 2024, 11:21 | 86.6 | 86.6% |
| 4 Jul 2024, 11:36 | 88.5 | 88.5% |
| 18 Jun 2024, 11:23 | 86.2 | 86.2% |
| 27 Dec 2023, 10:18 | 91 | 91% |
Dissolved oxygen
as O2 · code 9924 · mg/l
5.7 mg/l
Sampled 28 Aug 2026, 34 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 Aug 2026, 12:21 | 5.7 | 5.7 mg/l |
| 29 Jul 2026, 13:20 | 7.17 | 7.17 mg/l |
| 15 Jun 2026, 10:23 | 8.66 | 8.66 mg/l |
| 27 May 2026, 12:04 | 6.6 | 6.6 mg/l |
| 17 Apr 2026, 09:43 | 9.44 | 9.44 mg/l |
| 6 Mar 2026, 11:15 | 11.1 | 11.1 mg/l |
| 6 Feb 2026, 13:23 | 10.8 | 10.8 mg/l |
| 5 Jan 2026, 11:59 | 12.5 | 12.5 mg/l |
| 1 Dec 2025, 10:53 | 9.9 | 9.9 mg/l |
| 10 Nov 2025, 13:06 | 7.73 | 7.73 mg/l |
| 22 Oct 2025, 09:25 | 8.69 | 8.69 mg/l |
| 26 Sep 2025, 12:30 | 9.68 | 9.68 mg/l |
| 11 Aug 2025, 10:21 | 8.82 | 8.82 mg/l |
| 31 Jul 2025, 13:49 | 7.54 | 7.54 mg/l |
| 9 Jun 2025, 09:55 | 8.75 | 8.75 mg/l |
| 15 May 2025, 09:10 | 8.89 | 8.89 mg/l |
| 30 Apr 2025, 10:02 | 9.5 | 9.5 mg/l |
| 13 Mar 2025, 12:14 | 13.2 | 13.2 mg/l |
| 10 Feb 2025, 10:31 | 12.2 | 12.2 mg/l |
| 15 Jan 2025, 12:34 | 11.9 | 11.9 mg/l |
| 4 Dec 2024, 10:18 | 11.4 | 11.4 mg/l |
| 14 Nov 2024, 12:29 | 10.1 | 10.1 mg/l |
| 2 Oct 2024, 10:44 | 8.57 | 8.57 mg/l |
| 10 Sep 2024, 10:38 | 8.68 | 8.68 mg/l |
| 15 Aug 2024, 11:21 | 8.28 | 8.28 mg/l |
| 4 Jul 2024, 11:36 | 8.94 | 8.94 mg/l |
| 18 Jun 2024, 11:23 | 8.58 | 8.58 mg/l |
| 27 Dec 2023, 10:18 | 10.6 | 10.6 mg/l |
Water temperature
code 0076 · °C
18 °C
Sampled 28 Aug 2026, 34 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 Aug 2026, 12:21 | 18 | 18 °C |
| 29 Jul 2026, 13:20 | 21.8 | 21.8 °C |
| 15 Jun 2026, 10:23 | 14.6 | 14.6 °C |
| 27 May 2026, 12:04 | 19.4 | 19.4 °C |
| 17 Apr 2026, 09:43 | 11.3 | 11.3 °C |
| 6 Mar 2026, 11:15 | 9.1 | 9.1 °C |
| 6 Feb 2026, 13:23 | 8.1 | 8.1 °C |
| 5 Jan 2026, 11:59 | 3.2 | 3.2 °C |
| 1 Dec 2025, 10:53 | 8.3 | 8.3 °C |
| 10 Nov 2025, 13:06 | 12.2 | 12.2 °C |
| 22 Oct 2025, 09:25 | 11.4 | 11.4 °C |
| 26 Sep 2025, 12:30 | 11.3 | 11.3 °C |
| 11 Aug 2025, 10:21 | 16.7 | 16.7 °C |
| 31 Jul 2025, 13:49 | 18.2 | 18.2 °C |
| 9 Jun 2025, 09:55 | 13.7 | 13.7 °C |
| 15 May 2025, 09:10 | 12.9 | 12.9 °C |
| 30 Apr 2025, 10:02 | 13.9 | 13.9 °C |
| 13 Mar 2025, 12:14 | 6 | 6 °C |
| 10 Feb 2025, 10:31 | 5 | 5 °C |
| 15 Jan 2025, 12:34 | 7 | 7 °C |
| 4 Dec 2024, 10:18 | 6.8 | 6.8 °C |
| 14 Nov 2024, 12:29 | 9.6 | 9.6 °C |
| 2 Oct 2024, 10:44 | 13.3 | 13.3 °C |
| 10 Sep 2024, 10:38 | 14.7 | 14.7 °C |
| 15 Aug 2024, 11:21 | 17.4 | 17.4 °C |
| 4 Jul 2024, 11:36 | 14.8 | 14.8 °C |
| 18 Jun 2024, 11:23 | 15.5 | 15.5 °C |
| 27 Dec 2023, 10:18 | 8.8 | 8.8 °C |
pH
code 0061
7.66
Sampled 28 Aug 2026, 34 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 Aug 2026, 12:21 | 7.66 | 7.66 |
| 29 Jul 2026, 13:20 | 7.92 | 7.92 |
| 15 Jun 2026, 10:23 | 7.95 | 7.95 |
| 27 May 2026, 12:04 | 7.95 | 7.95 |
| 17 Apr 2026, 09:43 | 8.08 | 8.08 |
| 6 Mar 2026, 11:15 | 8.18 | 8.18 |
| 6 Feb 2026, 13:23 | 8.1 | 8.1 |
| 5 Jan 2026, 11:59 | 8.4 | 8.4 |
| 1 Dec 2025, 10:53 | 7.98 | 7.98 |
| 10 Nov 2025, 13:06 | 8.17 | 8.17 |
| 22 Oct 2025, 09:25 | 7.91 | 7.91 |
| 26 Sep 2025, 12:30 | 8.16 | 8.16 |
| 11 Aug 2025, 10:21 | 8.13 | 8.13 |
| 31 Jul 2025, 13:49 | 7.85 | 7.85 |
| 9 Jun 2025, 09:55 | 7.95 | 7.95 |
| 15 May 2025, 09:10 | 8.14 | 8.14 |
| 30 Apr 2025, 10:02 | 8.11 | 8.11 |
| 13 Mar 2025, 12:14 | 8.46 | 8.46 |
| 10 Feb 2025, 10:31 | 8.1 | 8.1 |
| 15 Jan 2025, 12:34 | 8.25 | 8.25 |
| 4 Dec 2024, 10:18 | 8.13 | 8.13 |
| 14 Nov 2024, 12:29 | 8.05 | 8.05 |
| 2 Oct 2024, 10:44 | 7.37 | 7.37 |
| 10 Sep 2024, 10:38 | 7.98 | 7.98 |
| 15 Aug 2024, 11:21 | 8.06 | 8.06 |
| 4 Jul 2024, 11:36 | 8.23 | 8.23 |
| 18 Jun 2024, 11:23 | 8.17 | 8.17 |
| 27 Dec 2023, 10:18 | 8.13 | 8.13 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.24 mg/l
Sampled 28 Aug 2026, 34 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 Aug 2026, 12:21 | 0.24 | 0.24 mg/l |
| 29 Jul 2026, 13:20 | 0.099 | 0.099 mg/l |
| 15 Jun 2026, 10:23 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 May 2026, 12:04 | 0.099 | 0.099 mg/l |
| 17 Apr 2026, 09:43 | 0.071 | 0.071 mg/l |
| 6 Mar 2026, 11:15 | 0.03 | 0.03 mg/l |
| 6 Feb 2026, 13:23 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Jan 2026, 11:59 | 0.062 | 0.062 mg/l |
| 1 Dec 2025, 10:53 | 0.048 | 0.048 mg/l |
| 10 Nov 2025, 13:06 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Oct 2025, 09:25 | 0.058 | 0.058 mg/l |
| 26 Sep 2025, 12:30 | 0.069 | 0.069 mg/l |
| 11 Aug 2025, 10:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 31 Jul 2025, 13:49 | 0.14 | 0.14 mg/l |
| 9 Jun 2025, 09:55 | 0.071 | 0.071 mg/l |
| 15 May 2025, 09:10 | 0.089 | 0.089 mg/l |
| 30 Apr 2025, 10:02 | 0.078 | 0.078 mg/l |
| 13 Mar 2025, 12:14 | 0.041 | 0.041 mg/l |
| 10 Feb 2025, 10:31 | 0.059 | 0.059 mg/l |
| 15 Jan 2025, 12:34 | 0.049 | 0.049 mg/l |
| 4 Dec 2024, 10:18 | 0.038 | 0.038 mg/l |
| 14 Nov 2024, 12:29 | 0.037 | 0.037 mg/l |
| 2 Oct 2024, 10:44 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Sep 2024, 10:38 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Aug 2024, 11:21 | 0.08 | 0.08 mg/l |
| 4 Jul 2024, 11:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Jun 2024, 11:23 | 0.037 | 0.037 mg/l |
| 27 Dec 2023, 10:18 | 0.044 | 0.044 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.43 mg/l
Sampled 28 Aug 2026, 34 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 Aug 2026, 12:21 | 1.43 | 1.43 mg/l |
| 29 Jul 2026, 13:20 | 0.984 | 0.984 mg/l |
| 15 Jun 2026, 10:23 | 1.48 | 1.48 mg/l |
| 27 May 2026, 12:04 | 1.45 | 1.45 mg/l |
| 17 Apr 2026, 09:43 | 3.07 | 3.07 mg/l |
| 6 Mar 2026, 11:15 | 5.18 | 5.18 mg/l |
| 6 Feb 2026, 13:23 | 4.29 | 4.29 mg/l |
| 5 Jan 2026, 11:59 | 4.38 | 4.38 mg/l |
| 1 Dec 2025, 10:53 | 2.97 | 2.97 mg/l |
| 10 Nov 2025, 13:06 | 1.19 | 1.19 mg/l |
| 22 Oct 2025, 09:25 | 1.97 | 1.97 mg/l |
| 26 Sep 2025, 12:30 | 2.38 | 2.38 mg/l |
| 11 Aug 2025, 10:21 | 2.79 | 2.79 mg/l |
| 31 Jul 2025, 13:49 | 2.27 | 2.27 mg/l |
| 9 Jun 2025, 09:55 | 1.86 | 1.86 mg/l |
| 15 May 2025, 09:10 | 2.26 | 2.26 mg/l |
| 30 Apr 2025, 10:02 | 3.27 | 3.27 mg/l |
| 13 Mar 2025, 12:14 | 5.08 | 5.08 mg/l |
| 10 Feb 2025, 10:31 | 4.48 | 4.48 mg/l |
| 15 Jan 2025, 12:34 | 5.77 | 5.77 mg/l |
| 14 Nov 2024, 12:29 | 3.98 | 3.98 mg/l |
| 2 Oct 2024, 10:44 | 3.28 | 3.28 mg/l |
| 10 Sep 2024, 10:38 | 2.18 | 2.18 mg/l |
| 15 Aug 2024, 11:21 | 2.27 | 2.27 mg/l |
| 4 Jul 2024, 11:36 | 3.27 | 3.27 mg/l |
| 18 Jun 2024, 11:23 | 2.97 | 2.97 mg/l |
| 27 Dec 2023, 10:18 | 4.38 | 4.38 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.33 mg/l
Sampled 28 Aug 2026, 34 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 Aug 2026, 12:21 | 0.33 | 0.33 mg/l |
| 29 Jul 2026, 13:20 | 0.49 | 0.49 mg/l |
| 15 Jun 2026, 10:23 | 0.29 | 0.29 mg/l |
| 27 May 2026, 12:04 | 0.45 | 0.45 mg/l |
| 17 Apr 2026, 09:43 | 0.18 | 0.18 mg/l |
| 6 Mar 2026, 11:15 | 0.12 | 0.12 mg/l |
| 6 Feb 2026, 13:23 | 0.12 | 0.12 mg/l |
| 5 Jan 2026, 11:59 | 0.17 | 0.17 mg/l |
| 1 Dec 2025, 10:53 | 0.2 | 0.2 mg/l |
| 10 Nov 2025, 13:06 | 0.28 | 0.28 mg/l |
| 22 Oct 2025, 09:25 | 0.37 | 0.37 mg/l |
| 26 Sep 2025, 12:30 | 0.41 | 0.41 mg/l |
| 11 Aug 2025, 10:21 | 0.46 | 0.46 mg/l |
| 31 Jul 2025, 13:49 | 0.35 | 0.35 mg/l |
| 9 Jun 2025, 09:55 | 0.28 | 0.28 mg/l |
| 15 May 2025, 09:10 | 0.23 | 0.23 mg/l |
| 30 Apr 2025, 10:02 | 0.15 | 0.15 mg/l |
| 13 Mar 2025, 12:14 | 0.077 | 0.077 mg/l |
| 10 Feb 2025, 10:31 | 0.094 | 0.094 mg/l |
| 15 Jan 2025, 12:34 | 0.13 | 0.13 mg/l |
| 4 Dec 2024, 10:18 | 0.13 | 0.13 mg/l |
| 14 Nov 2024, 12:29 | 0.16 | 0.16 mg/l |
| 2 Oct 2024, 10:44 | 0.14 | 0.14 mg/l |
| 10 Sep 2024, 10:38 | 0.19 | 0.19 mg/l |
| 15 Aug 2024, 11:21 | 0.22 | 0.22 mg/l |
| 4 Jul 2024, 11:36 | 0.16 | 0.16 mg/l |
| 18 Jun 2024, 11:23 | 0.16 | 0.16 mg/l |
| 27 Dec 2023, 10:18 | 0.13 | 0.13 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
631 µS/cm
Sampled 28 Aug 2026, 34 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 Aug 2026, 12:21 | 631 | 631 µS/cm |
| 29 Jul 2026, 13:20 | 626 | 626 µS/cm |
| 15 Jun 2026, 10:23 | 622 | 622 µS/cm |
| 27 May 2026, 12:04 | 616 | 616 µS/cm |
| 17 Apr 2026, 09:43 | 650 | 650 µS/cm |
| 6 Mar 2026, 11:15 | 703 | 703 µS/cm |
| 6 Feb 2026, 13:23 | 612 | 612 µS/cm |
| 5 Jan 2026, 11:59 | 793 | 793 µS/cm |
| 1 Dec 2025, 10:53 | 795 | 795 µS/cm |
| 10 Nov 2025, 13:06 | 475 | 475 µS/cm |
| 22 Oct 2025, 09:25 | 614 | 614 µS/cm |
| 26 Sep 2025, 12:30 | 662 | 662 µS/cm |
| 11 Aug 2025, 10:21 | 612 | 612 µS/cm |
| 31 Jul 2025, 13:49 | 475 | 475 µS/cm |
| 9 Jun 2025, 09:55 | 564 | 564 µS/cm |
| 15 May 2025, 09:10 | 585 | 585 µS/cm |
| 30 Apr 2025, 10:02 | 583 | 583 µS/cm |
| 13 Mar 2025, 12:14 | 688 | 688 µS/cm |
| 10 Feb 2025, 10:31 | 673 | 673 µS/cm |
| 15 Jan 2025, 12:34 | 743 | 743 µS/cm |
| 4 Dec 2024, 10:18 | 728 | 728 µS/cm |
| 14 Nov 2024, 12:29 | 691 | 691 µS/cm |
| 2 Oct 2024, 10:44 | 616 | 616 µS/cm |
| 10 Sep 2024, 10:38 | 497 | 497 µS/cm |
| 15 Aug 2024, 11:21 | 564 | 564 µS/cm |
| 4 Jul 2024, 11:36 | 572 | 572 µS/cm |
| 18 Jun 2024, 11:23 | 601 | 601 µS/cm |
| 27 Dec 2023, 10:18 | 726 | 726 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 | Dec 2023 – Aug 2026 | 60.4% 28 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 28 | Dec 2023 – Aug 2026 | 5.7 mg/l 28 Aug 2026 |
| Temperature of Water 0076 | River water | 28 | Dec 2023 – Aug 2026 | 18 °C 28 Aug 2026 |
| pH 0061 | River water | 28 | Dec 2023 – Aug 2026 | 7.66 28 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 28 | Dec 2023 – Aug 2026 | 0.24 mg/l 28 Aug 2026 |
| Nitrate as N 0117 | River water | 27 | Dec 2023 – Aug 2026 | 1.43 mg/l 28 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 28 | Dec 2023 – Aug 2026 | 0.33 mg/l 28 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 28 | Dec 2023 – Aug 2026 | 631 µS/cm 28 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 28 | Dec 2023 – Aug 2026 | 210 mg/l 28 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 28 | Dec 2023 – Aug 2026 | 0.00365 mg/l 28 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 26 | Jun 2024 – Aug 2026 | below 4 mg/l 28 Aug 2026 |
| Nitrite as N 0118 | River water | 28 | Dec 2023 – Aug 2026 | 0.066 mg/l 28 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 27 | Dec 2023 – Aug 2026 | 1.5 mg/l 28 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.