Stocklake Brook above Bear Brook
EA name: STOCKLAKE BROOK ABOVE BEAR BROOK
Environment Agency sampling point TH-PTAR0120 · 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
- 13 Mar 2025, 10:4719 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone). Not sampled since, as far as the archive shows: the Environment Agency was asked up to 30 Sep 2026 and had nothing newer.
- Samples banked
- 17 since 19 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 482744, 214044As published, to the nearest 1 m. Open in a map
- River, by its own name
- Stocklake Brook
- River, by the map
- Stocklake BrookPlaced on the river its name gives, 13 m from the line.
- Next gauge downstream
- Aylesbury On the Bear Brook · 0.1 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (17 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
102.3%
Sampled 13 Mar 2025, 19 months ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2025, 10:47 | 102.3 | 102.3% |
| 20 Feb 2025, 13:32 | 100.5 | 100.5% |
| 15 Jan 2025, 09:47 | 80.6 | 80.6% |
| 5 Dec 2024, 12:00 | 79 | 79% |
| 14 Nov 2024, 11:45 | 79.5 | 79.5% |
| 8 Oct 2024, 12:48 | 77.6 | 77.6% |
| 10 Sep 2024, 10:15 | 59.4 | 59.4% |
| 15 Aug 2024, 10:36 | 3.8 | 3.8% |
| 4 Jul 2024, 11:23 | 113 | 113% |
| 18 Jun 2024, 10:42 | 83.4 | 83.4% |
| 1 Mar 2024, 09:55 | 89.7 | 89.7% |
| 5 Feb 2024, 10:28 | 87 | 87% |
| 12 Jan 2024, 13:15 | 87.4 | 87.4% |
| 27 Dec 2023, 09:34 | 70.3 | 70.3% |
| 28 Nov 2023, 11:41 | 76.7 | 76.7% |
| 9 Nov 2023, 12:01 | 76 | 76% |
| 19 Oct 2023, 11:13 | 66.2 | 66.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
12.7 mg/l
Sampled 13 Mar 2025, 19 months ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2025, 10:47 | 12.7 | 12.7 mg/l |
| 20 Feb 2025, 13:32 | 11.5 | 11.5 mg/l |
| 15 Jan 2025, 09:47 | 9.58 | 9.58 mg/l |
| 5 Dec 2024, 12:00 | 8.78 | 8.78 mg/l |
| 14 Nov 2024, 11:45 | 8.96 | 8.96 mg/l |
| 8 Oct 2024, 12:48 | 7.98 | 7.98 mg/l |
| 10 Sep 2024, 10:15 | 5.99 | 5.99 mg/l |
| 15 Aug 2024, 10:36 | 0.363 | 0.363 mg/l |
| 4 Jul 2024, 11:23 | 10.7 | 10.7 mg/l |
| 18 Jun 2024, 10:42 | 7.99 | 7.99 mg/l |
| 1 Mar 2024, 09:55 | 11 | 11 mg/l |
| 5 Feb 2024, 10:28 | 10.1 | 10.1 mg/l |
| 12 Jan 2024, 13:15 | 10.8 | 10.8 mg/l |
| 27 Dec 2023, 09:34 | 8.11 | 8.11 mg/l |
| 28 Nov 2023, 11:41 | 9.27 | 9.27 mg/l |
| 9 Nov 2023, 12:01 | 8.6 | 8.6 mg/l |
| 19 Oct 2023, 11:13 | 6.78 | 6.78 mg/l |
Water temperature
code 0076 · °C
6.1 °C
Sampled 13 Mar 2025, 19 months ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2025, 10:47 | 6.1 | 6.1 °C |
| 20 Feb 2025, 13:32 | 9.4 | 9.4 °C |
| 15 Jan 2025, 09:47 | 7.8 | 7.8 °C |
| 5 Dec 2024, 12:00 | 10.6 | 10.6 °C |
| 14 Nov 2024, 11:45 | 10 | 10 °C |
| 8 Oct 2024, 12:48 | 14 | 14 °C |
| 10 Sep 2024, 10:15 | 14.9 | 14.9 °C |
| 15 Aug 2024, 10:36 | 17.4 | 17.4 °C |
| 4 Jul 2024, 11:23 | 17.7 | 17.7 °C |
| 18 Jun 2024, 10:42 | 17.3 | 17.3 °C |
| 1 Mar 2024, 09:55 | 6.5 | 6.5 °C |
| 5 Feb 2024, 10:28 | 8.9 | 8.9 °C |
| 12 Jan 2024, 13:15 | 6.1 | 6.1 °C |
| 27 Dec 2023, 09:34 | 9 | 9 °C |
| 28 Nov 2023, 11:41 | 7.1 | 7.1 °C |
| 9 Nov 2023, 12:01 | 9.8 | 9.8 °C |
| 19 Oct 2023, 11:13 | 14.2 | 14.2 °C |
pH
code 0061
8.22
Sampled 13 Mar 2025, 19 months ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2025, 10:47 | 8.22 | 8.22 |
| 20 Feb 2025, 13:32 | 8.04 | 8.04 |
| 15 Jan 2025, 09:47 | 7.9 | 7.9 |
| 5 Dec 2024, 12:00 | 7.9 | 7.9 |
| 14 Nov 2024, 11:45 | 7.88 | 7.88 |
| 8 Oct 2024, 12:48 | 7.71 | 7.71 |
| 10 Sep 2024, 10:15 | 7.68 | 7.68 |
| 15 Aug 2024, 10:36 | 7.24 | 7.24 |
| 4 Jul 2024, 11:23 | 8.2 | 8.2 |
| 18 Jun 2024, 10:42 | 7.94 | 7.94 |
| 1 Mar 2024, 09:55 | 7.95 | 7.95 |
| 5 Feb 2024, 10:28 | 8.37 | 8.37 |
| 12 Jan 2024, 13:15 | 8.04 | 8.04 |
| 27 Dec 2023, 09:34 | 7.83 | 7.83 |
| 28 Nov 2023, 11:41 | 7.86 | 7.86 |
| 9 Nov 2023, 12:01 | 7.76 | 7.76 |
| 19 Oct 2023, 11:13 | 7.61 | 7.61 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.049 mg/l
Sampled 13 Mar 2025, 19 months ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2025, 10:47 | 0.049 | 0.049 mg/l |
| 20 Feb 2025, 13:32 | 0.035 | 0.035 mg/l |
| 15 Jan 2025, 09:47 | 0.11 | 0.11 mg/l |
| 5 Dec 2024, 12:00 | 0.043 | 0.043 mg/l |
| 14 Nov 2024, 11:45 | 0.04 | 0.04 mg/l |
| 8 Oct 2024, 12:48 | 0.039 | 0.039 mg/l |
| 10 Sep 2024, 10:15 | 0.048 | 0.048 mg/l |
| 15 Aug 2024, 10:36 | 1.1 | 1.1 mg/l |
| 4 Jul 2024, 11:23 | 0.04 | 0.04 mg/l |
| 18 Jun 2024, 10:42 | 0.066 | 0.066 mg/l |
| 1 Mar 2024, 09:55 | 0.062 | 0.062 mg/l |
| 5 Feb 2024, 10:28 | 0.045 | 0.045 mg/l |
| 27 Dec 2023, 09:34 | 0.062 | 0.062 mg/l |
| 28 Nov 2023, 11:41 | 0.037 | 0.037 mg/l |
| 9 Nov 2023, 12:01 | 0.034 | 0.034 mg/l |
| 19 Oct 2023, 11:13 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.69 mg/l
Sampled 13 Mar 2025, 19 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2025, 10:47 | 1.69 | 1.69 mg/l |
| 20 Feb 2025, 13:32 | 2.29 | 2.29 mg/l |
| 15 Jan 2025, 09:47 | 1.98 | 1.98 mg/l |
| 14 Nov 2024, 11:45 | 1.97 | 1.97 mg/l |
| 8 Oct 2024, 12:48 | 1.38 | 1.38 mg/l |
| 10 Sep 2024, 10:15 | 1.48 | 1.48 mg/l |
| 15 Aug 2024, 10:36 | <0.196 | below 0.196 mg/l (not detected above this) |
| 4 Jul 2024, 11:23 | 0.788 | 0.788 mg/l |
| 18 Jun 2024, 10:42 | 1.76 | 1.76 mg/l |
| 1 Mar 2024, 09:55 | 1.57 | 1.57 mg/l |
| 5 Feb 2024, 10:28 | 2.57 | 2.57 mg/l |
| 27 Dec 2023, 09:34 | 1.87 | 1.87 mg/l |
| 28 Nov 2023, 11:41 | 1.69 | 1.69 mg/l |
| 9 Nov 2023, 12:01 | 1.99 | 1.99 mg/l |
| 19 Oct 2023, 11:13 | 1.79 | 1.79 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.19 mg/l
Sampled 13 Mar 2025, 19 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2025, 10:47 | 0.19 | 0.19 mg/l |
| 20 Feb 2025, 13:32 | 0.16 | 0.16 mg/l |
| 15 Jan 2025, 09:47 | 0.17 | 0.17 mg/l |
| 14 Nov 2024, 11:45 | 0.34 | 0.34 mg/l |
| 8 Oct 2024, 12:48 | 0.16 | 0.16 mg/l |
| 10 Sep 2024, 10:15 | 0.12 | 0.12 mg/l |
| 15 Aug 2024, 10:36 | 1.2 | 1.2 mg/l |
| 4 Jul 2024, 11:23 | 0.26 | 0.26 mg/l |
| 18 Jun 2024, 10:42 | 0.27 | 0.27 mg/l |
| 1 Mar 2024, 09:55 | 0.13 | 0.13 mg/l |
| 5 Feb 2024, 10:28 | 0.25 | 0.25 mg/l |
| 27 Dec 2023, 09:34 | 0.24 | 0.24 mg/l |
| 28 Nov 2023, 11:41 | 0.25 | 0.25 mg/l |
| 9 Nov 2023, 12:01 | 0.24 | 0.24 mg/l |
| 19 Oct 2023, 11:13 | 0.2 | 0.2 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1002 µS/cm
Sampled 13 Mar 2025, 19 months ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2025, 10:47 | 1002 | 1002 µS/cm |
| 20 Feb 2025, 13:32 | 919 | 919 µS/cm |
| 15 Jan 2025, 09:47 | 997 | 997 µS/cm |
| 5 Dec 2024, 12:00 | 877 | 877 µS/cm |
| 14 Nov 2024, 11:45 | 863 | 863 µS/cm |
| 8 Oct 2024, 12:48 | 653 | 653 µS/cm |
| 10 Sep 2024, 10:15 | 872 | 872 µS/cm |
| 15 Aug 2024, 10:36 | 1029 | 1029 µS/cm |
| 4 Jul 2024, 11:23 | 898 | 898 µS/cm |
| 18 Jun 2024, 10:42 | 760 | 760 µS/cm |
| 1 Mar 2024, 09:55 | 585 | 585 µS/cm |
| 5 Feb 2024, 10:28 | 865 | 865 µS/cm |
| 12 Jan 2024, 13:15 | 846 | 846 µS/cm |
| 27 Dec 2023, 09:34 | 791 | 791 µS/cm |
| 28 Nov 2023, 11:41 | 855 | 855 µS/cm |
| 9 Nov 2023, 12:01 | 864 | 864 µS/cm |
| 19 Oct 2023, 11:13 | 733 | 733 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 | 17 | Oct 2023 – Mar 2025 | 102.3% 13 Mar 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 17 | Oct 2023 – Mar 2025 | 12.7 mg/l 13 Mar 2025 |
| Temperature of Water 0076 | River water | 17 | Oct 2023 – Mar 2025 | 6.1 °C 13 Mar 2025 |
| pH 0061 | River water | 17 | Oct 2023 – Mar 2025 | 8.22 13 Mar 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 16 | Oct 2023 – Mar 2025 | 0.049 mg/l 13 Mar 2025 |
| Nitrate as N 0117 | River water | 15 | Oct 2023 – Mar 2025 | 1.69 mg/l 13 Mar 2025 |
| Orthophosphate, reactive as P 0180 | River water | 15 | Oct 2023 – Mar 2025 | 0.19 mg/l 13 Mar 2025 |
| Conductivity at 25 C 0077 | River water | 17 | Oct 2023 – Mar 2025 | 1002 µS/cm 13 Mar 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 16 | Oct 2023 – Mar 2025 | 350 mg/l 13 Mar 2025 |
| Ammonia un-ionised as N 0119 | River water | 16 | Oct 2023 – Mar 2025 | 0.00067 mg/l 13 Mar 2025 |
| BOD : 5 Day ATU 0085 | River water | 15 | Oct 2023 – Mar 2025 | 3.3 mg/l 13 Mar 2025 |
| Nitrite as N 0118 | River water | 16 | Oct 2023 – Mar 2025 | 0.012 mg/l 13 Mar 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 15 | Oct 2023 – Mar 2025 | 1.7 mg/l 13 Mar 2025 |
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.