Hardwick Brook at Hardwick
EA name: HARDWICK BROOK AT HARDWICK
Environment Agency sampling point TH-PTAR0047 · 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
- 18 Aug 2026, 11:2144 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 27 since 28 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 480681, 218783As published, to the nearest 1 m. Open in a map
- River, by its own name
- Hardwick Brook
- River, by the map
- Hardwick BrookPlaced on the river its name gives, 14 m from the line.
- Next gauge downstream
- Aylesbury Thame On the River Thame · 7.1 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (27 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
65.1%
Sampled 18 Aug 2026, 44 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 11:21 | 65.1 | 65.1% |
| 29 Jul 2026, 11:00 | 80.5 | 80.5% |
| 29 Jun 2026, 11:10 | 52.6 | 52.6% |
| 27 May 2026, 11:47 | 44.1 | 44.1% |
| 17 Apr 2026, 12:00 | 87.3 | 87.3% |
| 20 Mar 2026, 11:46 | 99.1 | 99.1% |
| 6 Feb 2026, 13:03 | 91.6 | 91.6% |
| 5 Jan 2026, 12:20 | 91.9 | 91.9% |
| 4 Dec 2025, 12:11 | 90.5 | 90.5% |
| 10 Nov 2025, 11:49 | 63.2 | 63.2% |
| 22 Oct 2025, 09:55 | 73.1 | 73.1% |
| 26 Sep 2025, 11:51 | 71.9 | 71.9% |
| 11 Aug 2025, 09:46 | 56.7 | 56.7% |
| 16 Jul 2025, 10:35 | 55.4 | 55.4% |
| 24 Jun 2025, 10:21 | 63.7 | 63.7% |
| 15 May 2025, 09:50 | 76.8 | 76.8% |
| 30 Apr 2025, 10:36 | 89.3 | 89.3% |
| 13 Mar 2025, 11:04 | 97 | 97% |
| 25 Feb 2025, 10:50 | 93.4 | 93.4% |
| 31 Jan 2025, 13:22 | 94 | 94% |
| 5 Dec 2024, 12:18 | 94.1 | 94.1% |
| 14 Nov 2024, 11:29 | 87.4 | 87.4% |
| 2 Oct 2024, 12:03 | 79.7 | 79.7% |
| 2 Sep 2024, 11:39 | 58.8 | 58.8% |
| 15 Aug 2024, 10:54 | 69.2 | 69.2% |
| 29 Jul 2024, 09:50 | 80.3 | 80.3% |
| 28 Jun 2024, 13:38 | 66.3 | 66.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
6.13 mg/l
Sampled 18 Aug 2026, 44 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 11:21 | 6.13 | 6.13 mg/l |
| 29 Jul 2026, 11:00 | 7.57 | 7.57 mg/l |
| 29 Jun 2026, 11:10 | 5.08 | 5.08 mg/l |
| 27 May 2026, 11:47 | 4.11 | 4.11 mg/l |
| 17 Apr 2026, 12:00 | 9.37 | 9.37 mg/l |
| 20 Mar 2026, 11:46 | 11.7 | 11.7 mg/l |
| 6 Feb 2026, 13:03 | 10.9 | 10.9 mg/l |
| 5 Jan 2026, 12:20 | 13 | 13 mg/l |
| 4 Dec 2025, 12:11 | 11 | 11 mg/l |
| 10 Nov 2025, 11:49 | 6.94 | 6.94 mg/l |
| 22 Oct 2025, 09:55 | 8.08 | 8.08 mg/l |
| 26 Sep 2025, 11:51 | 8.02 | 8.02 mg/l |
| 11 Aug 2025, 09:46 | 5.68 | 5.68 mg/l |
| 16 Jul 2025, 10:35 | 5.41 | 5.41 mg/l |
| 24 Jun 2025, 10:21 | 6.34 | 6.34 mg/l |
| 15 May 2025, 09:50 | 8.28 | 8.28 mg/l |
| 30 Apr 2025, 10:36 | 9.41 | 9.41 mg/l |
| 13 Mar 2025, 11:04 | 12.3 | 12.3 mg/l |
| 25 Feb 2025, 10:50 | 11.3 | 11.3 mg/l |
| 31 Jan 2025, 13:22 | 11.9 | 11.9 mg/l |
| 5 Dec 2024, 12:18 | 10.7 | 10.7 mg/l |
| 14 Nov 2024, 11:29 | 9.92 | 9.92 mg/l |
| 2 Oct 2024, 12:03 | 8.28 | 8.28 mg/l |
| 2 Sep 2024, 11:39 | 5.67 | 5.67 mg/l |
| 15 Aug 2024, 10:54 | 6.77 | 6.77 mg/l |
| 29 Jul 2024, 09:50 | 7.97 | 7.97 mg/l |
| 28 Jun 2024, 13:38 | 6.55 | 6.55 mg/l |
Water temperature
code 0076 · °C
18.1 °C
Sampled 18 Aug 2026, 44 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 11:21 | 18.1 | 18.1 °C |
| 29 Jul 2026, 11:00 | 18.2 | 18.2 °C |
| 29 Jun 2026, 11:10 | 16.9 | 16.9 °C |
| 27 May 2026, 11:47 | 18.7 | 18.7 °C |
| 17 Apr 2026, 12:00 | 12.1 | 12.1 °C |
| 20 Mar 2026, 11:46 | 8.2 | 8.2 °C |
| 6 Feb 2026, 13:03 | 7.8 | 7.8 °C |
| 5 Jan 2026, 12:20 | 1.2 | 1.2 °C |
| 4 Dec 2025, 12:11 | 7 | 7 °C |
| 10 Nov 2025, 11:49 | 11.1 | 11.1 °C |
| 22 Oct 2025, 09:55 | 10.8 | 10.8 °C |
| 26 Sep 2025, 11:51 | 10.4 | 10.4 °C |
| 11 Aug 2025, 09:46 | 15.2 | 15.2 °C |
| 16 Jul 2025, 10:35 | 16.4 | 16.4 °C |
| 24 Jun 2025, 10:21 | 15.5 | 15.5 °C |
| 15 May 2025, 09:50 | 11.9 | 11.9 °C |
| 30 Apr 2025, 10:36 | 12.9 | 12.9 °C |
| 13 Mar 2025, 11:04 | 5.1 | 5.1 °C |
| 25 Feb 2025, 10:50 | 7.2 | 7.2 °C |
| 31 Jan 2025, 13:22 | 5.3 | 5.3 °C |
| 5 Dec 2024, 12:18 | 9.5 | 9.5 °C |
| 14 Nov 2024, 11:29 | 9.7 | 9.7 °C |
| 2 Oct 2024, 12:03 | 13.5 | 13.5 °C |
| 2 Sep 2024, 11:39 | 17 | 17 °C |
| 15 Aug 2024, 10:54 | 16.3 | 16.3 °C |
| 29 Jul 2024, 09:50 | 15.6 | 15.6 °C |
| 28 Jun 2024, 13:38 | 15.8 | 15.8 °C |
pH
code 0061
7.63
Sampled 18 Aug 2026, 44 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 11:21 | 7.63 | 7.63 |
| 29 Jul 2026, 11:00 | 7.64 | 7.64 |
| 29 Jun 2026, 11:10 | 7.77 | 7.77 |
| 27 May 2026, 11:47 | 7.69 | 7.69 |
| 17 Apr 2026, 12:00 | 8.08 | 8.08 |
| 20 Mar 2026, 11:46 | 8.16 | 8.16 |
| 6 Feb 2026, 13:03 | 7.95 | 7.95 |
| 5 Jan 2026, 12:20 | 8.33 | 8.33 |
| 4 Dec 2025, 12:11 | 7.91 | 7.91 |
| 10 Nov 2025, 11:49 | 8.28 | 8.28 |
| 22 Oct 2025, 09:55 | 7.86 | 7.86 |
| 26 Sep 2025, 11:51 | 7.87 | 7.87 |
| 11 Aug 2025, 09:46 | 7.68 | 7.68 |
| 16 Jul 2025, 10:35 | 7.77 | 7.77 |
| 24 Jun 2025, 10:21 | 7.77 | 7.77 |
| 15 May 2025, 09:50 | 8.04 | 8.04 |
| 30 Apr 2025, 10:36 | 8.09 | 8.09 |
| 13 Mar 2025, 11:04 | 8.37 | 8.37 |
| 25 Feb 2025, 10:50 | 7.96 | 7.96 |
| 31 Jan 2025, 13:22 | 8.01 | 8.01 |
| 5 Dec 2024, 12:18 | 8.03 | 8.03 |
| 14 Nov 2024, 11:29 | 7.92 | 7.92 |
| 2 Oct 2024, 12:03 | 6.92 | 6.92 |
| 2 Sep 2024, 11:39 | 7.72 | 7.72 |
| 15 Aug 2024, 10:54 | 7.91 | 7.91 |
| 29 Jul 2024, 09:50 | 8 | 8 |
| 28 Jun 2024, 13:38 | 7.88 | 7.88 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.081 mg/l
Sampled 18 Aug 2026, 44 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 11:21 | 0.081 | 0.081 mg/l |
| 29 Jul 2026, 11:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 Jun 2026, 11:10 | 0.17 | 0.17 mg/l |
| 27 May 2026, 11:47 | 0.1 | 0.1 mg/l |
| 17 Apr 2026, 12:00 | 0.03 | 0.03 mg/l |
| 20 Mar 2026, 11:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Feb 2026, 13:03 | 0.036 | 0.036 mg/l |
| 5 Jan 2026, 12:20 | 0.04 | 0.04 mg/l |
| 4 Dec 2025, 12:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Nov 2025, 11:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Oct 2025, 09:55 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Sep 2025, 11:51 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Aug 2025, 09:46 | 0.086 | 0.086 mg/l |
| 16 Jul 2025, 10:35 | 0.14 | 0.14 mg/l |
| 24 Jun 2025, 10:21 | 0.089 | 0.089 mg/l |
| 15 May 2025, 09:50 | 0.059 | 0.059 mg/l |
| 30 Apr 2025, 10:36 | 0.045 | 0.045 mg/l |
| 13 Mar 2025, 11:04 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Feb 2025, 10:50 | 0.042 | 0.042 mg/l |
| 31 Jan 2025, 13:22 | 0.065 | 0.065 mg/l |
| 5 Dec 2024, 12:18 | 0.042 | 0.042 mg/l |
| 14 Nov 2024, 11:29 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Oct 2024, 12:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Sep 2024, 11:39 | 0.031 | 0.031 mg/l |
| 15 Aug 2024, 10:54 | 0.04 | 0.04 mg/l |
| 29 Jul 2024, 09:50 | 0.042 | 0.042 mg/l |
| 28 Jun 2024, 13:38 | 0.065 | 0.065 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.39 mg/l
Sampled 18 Aug 2026, 44 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 11:21 | 2.39 | 2.39 mg/l |
| 29 Jul 2026, 11:00 | 0.236 | 0.236 mg/l |
| 29 Jun 2026, 11:10 | 0.235 | 0.235 mg/l |
| 27 May 2026, 11:47 | 2.32 | 2.32 mg/l |
| 17 Apr 2026, 12:00 | 6.38 | 6.38 mg/l |
| 20 Mar 2026, 11:46 | 4.79 | 4.79 mg/l |
| 6 Feb 2026, 13:03 | 4.98 | 4.98 mg/l |
| 5 Jan 2026, 12:20 | 7.84 | 7.84 mg/l |
| 4 Dec 2025, 12:11 | 17 | 17 mg/l |
| 10 Nov 2025, 11:49 | 2.39 | 2.39 mg/l |
| 22 Oct 2025, 09:55 | 2.99 | 2.99 mg/l |
| 26 Sep 2025, 11:51 | 1.09 | 1.09 mg/l |
| 11 Aug 2025, 09:46 | 0.398 | 0.398 mg/l |
| 16 Jul 2025, 10:35 | 0.486 | 0.486 mg/l |
| 24 Jun 2025, 10:21 | 1.59 | 1.59 mg/l |
| 15 May 2025, 09:50 | 7.04 | 7.04 mg/l |
| 30 Apr 2025, 10:36 | 6.07 | 6.07 mg/l |
| 13 Mar 2025, 11:04 | 6.19 | 6.19 mg/l |
| 25 Feb 2025, 10:50 | 4.17 | 4.17 mg/l |
| 31 Jan 2025, 13:22 | 4.28 | 4.28 mg/l |
| 5 Dec 2024, 12:18 | 5.29 | 5.29 mg/l |
| 14 Nov 2024, 11:29 | 2.59 | 2.59 mg/l |
| 2 Oct 2024, 12:03 | 7.38 | 7.38 mg/l |
| 2 Sep 2024, 11:39 | 5.16 | 5.16 mg/l |
| 15 Aug 2024, 10:54 | 3.28 | 3.28 mg/l |
| 29 Jul 2024, 09:50 | 3.67 | 3.67 mg/l |
| 28 Jun 2024, 13:38 | 4.84 | 4.84 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.27 mg/l
Sampled 18 Aug 2026, 44 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 11:21 | 0.27 | 0.27 mg/l |
| 29 Jul 2026, 11:00 | 0.14 | 0.14 mg/l |
| 29 Jun 2026, 11:10 | 0.4 | 0.4 mg/l |
| 27 May 2026, 11:47 | 0.14 | 0.14 mg/l |
| 17 Apr 2026, 12:00 | 0.065 | 0.065 mg/l |
| 20 Mar 2026, 11:46 | 0.096 | 0.096 mg/l |
| 6 Feb 2026, 13:03 | 0.15 | 0.15 mg/l |
| 5 Jan 2026, 12:20 | 0.064 | 0.064 mg/l |
| 4 Dec 2025, 12:11 | 0.074 | 0.074 mg/l |
| 10 Nov 2025, 11:49 | 0.11 | 0.11 mg/l |
| 22 Oct 2025, 09:55 | 0.12 | 0.12 mg/l |
| 26 Sep 2025, 11:51 | 0.11 | 0.11 mg/l |
| 11 Aug 2025, 09:46 | 0.19 | 0.19 mg/l |
| 16 Jul 2025, 10:35 | 0.25 | 0.25 mg/l |
| 24 Jun 2025, 10:21 | 0.32 | 0.32 mg/l |
| 15 May 2025, 09:50 | 0.063 | 0.063 mg/l |
| 30 Apr 2025, 10:36 | 0.068 | 0.068 mg/l |
| 13 Mar 2025, 11:04 | 0.085 | 0.085 mg/l |
| 25 Feb 2025, 10:50 | 0.16 | 0.16 mg/l |
| 31 Jan 2025, 13:22 | 0.079 | 0.079 mg/l |
| 14 Nov 2024, 11:29 | 0.15 | 0.15 mg/l |
| 2 Oct 2024, 12:03 | 0.19 | 0.19 mg/l |
| 2 Sep 2024, 11:39 | 0.13 | 0.13 mg/l |
| 15 Aug 2024, 10:54 | 0.16 | 0.16 mg/l |
| 29 Jul 2024, 09:50 | 0.22 | 0.22 mg/l |
| 28 Jun 2024, 13:38 | 0.15 | 0.15 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
734 µS/cm
Sampled 18 Aug 2026, 44 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 11:21 | 734 | 734 µS/cm |
| 29 Jul 2026, 11:00 | 779 | 779 µS/cm |
| 29 Jun 2026, 11:10 | 859 | 859 µS/cm |
| 27 May 2026, 11:47 | 922 | 922 µS/cm |
| 17 Apr 2026, 12:00 | 851 | 851 µS/cm |
| 20 Mar 2026, 11:46 | 766 | 766 µS/cm |
| 6 Feb 2026, 13:03 | 453 | 453 µS/cm |
| 5 Jan 2026, 12:20 | 821 | 821 µS/cm |
| 4 Dec 2025, 12:11 | 774 | 774 µS/cm |
| 10 Nov 2025, 11:49 | 829 | 829 µS/cm |
| 22 Oct 2025, 09:55 | 897 | 897 µS/cm |
| 26 Sep 2025, 11:51 | 830 | 830 µS/cm |
| 11 Aug 2025, 09:46 | 868 | 868 µS/cm |
| 16 Jul 2025, 10:35 | 872 | 872 µS/cm |
| 24 Jun 2025, 10:21 | 793 | 793 µS/cm |
| 15 May 2025, 09:50 | 858 | 858 µS/cm |
| 30 Apr 2025, 10:36 | 829 | 829 µS/cm |
| 13 Mar 2025, 11:04 | 826 | 826 µS/cm |
| 25 Feb 2025, 10:50 | 550 | 550 µS/cm |
| 31 Jan 2025, 13:22 | 579 | 579 µS/cm |
| 5 Dec 2024, 12:18 | 532 | 532 µS/cm |
| 14 Nov 2024, 11:29 | 716 | 716 µS/cm |
| 2 Oct 2024, 12:03 | 568 | 568 µS/cm |
| 2 Sep 2024, 11:39 | 857 | 857 µS/cm |
| 15 Aug 2024, 10:54 | 887 | 887 µS/cm |
| 29 Jul 2024, 09:50 | 808 | 808 µS/cm |
| 28 Jun 2024, 13:38 | 844 | 844 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 – Aug 2026 | 65.1% 18 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 27 | Jun 2024 – Aug 2026 | 6.13 mg/l 18 Aug 2026 |
| Temperature of Water 0076 | River water | 27 | Jun 2024 – Aug 2026 | 18.1 °C 18 Aug 2026 |
| pH 0061 | River water | 27 | Jun 2024 – Aug 2026 | 7.63 18 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 27 | Jun 2024 – Aug 2026 | 0.081 mg/l 18 Aug 2026 |
| Nitrate as N 0117 | River water | 27 | Jun 2024 – Aug 2026 | 2.39 mg/l 18 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 26 | Jun 2024 – Aug 2026 | 0.27 mg/l 18 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 27 | Jun 2024 – Aug 2026 | 734 µS/cm 18 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 27 | Jun 2024 – Aug 2026 | 290 mg/l 18 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 27 | Jun 2024 – Aug 2026 | 0.00116 mg/l 18 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 26 | Jun 2024 – Aug 2026 | below 1 mg/l 18 Aug 2026 |
| Nitrite as N 0118 | River water | 27 | Jun 2024 – Aug 2026 | 0.014 mg/l 18 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 27 | Jun 2024 – Aug 2026 | 2.4 mg/l 18 Aug 2026 |
| Phosphorus, Total as P 0348 | River water | 14 | Apr 2025 – Aug 2026 | 0.39 mg/l 18 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.