River Nene Hardwater Mill
EA name: R.NENE HARDWATER MILL
Environment Agency sampling point AN-NENE220H · 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
- 11 May 2026, 15:145 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
- 30 since 12 Oct 2023 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 487601, 263629As published, to the nearest 1 m. Open in a map
- River, by its own name
- Nene
- River, by the map
- River NenePlaced on the river its name gives, 3 m from the line.
- Next gauge downstream
- Islip Sluice On the River Nene · 28 km along the river (the path rests on a repair to the map)
- Nearest gauge upstream
- Cogenhoe On the River Nene · 5.6 km along the riverNENE VALLEY FGS GSM 10 km along the riverNene Valley On the River Nene · 10 km along the river
- Why it was sampled
- Monitoring (national agency policy) (24 samples)
Planned investigation (local monitoring) (6 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
92.3%
Sampled 11 May 2026, 5 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 15:14 | 92.3 | 92.3% |
| 21 Apr 2026, 09:54 | 88.2 | 88.2% |
| 4 Mar 2026, 10:41 | 96.8 | 96.8% |
| 5 Feb 2026, 13:01 | 95 | 95% |
| 14 Jan 2026, 12:08 | 95.9 | 95.9% |
| 2 Dec 2025, 12:00 | 91.5 | 91.5% |
| 11 Nov 2025, 12:12 | 83.4 | 83.4% |
| 13 Oct 2025, 13:46 | 86.2 | 86.2% |
| 5 Sep 2025, 11:40 | 83.8 | 83.8% |
| 20 Aug 2025, 12:06 | 89.3 | 89.3% |
| 11 Jul 2025, 12:28 | 95.9 | 95.9% |
| 11 Jun 2025, 11:24 | 96.9 | 96.9% |
| 12 May 2025, 10:54 | 94 | 94% |
| 7 Apr 2025, 09:22 | 97.8 | 97.8% |
| 13 Mar 2025, 10:35 | 97.4 | 97.4% |
| 7 Feb 2025, 10:59 | 100.1 | 100.1% |
| 21 Jan 2025, 11:49 | 95.2 | 95.2% |
| 3 Dec 2024, 12:22 | 95.6 | 95.6% |
| 18 Nov 2024, 13:46 | 86.1 | 86.1% |
| 23 Oct 2024, 09:15 | 91.8 | 91.8% |
| 25 Sep 2024, 15:13 | 78.4 | 78.4% |
| 19 Aug 2024, 11:45 | 86.5 | 86.5% |
| 15 Jul 2024, 13:28 | 94 | 94% |
| 28 Jun 2024, 10:55 | 82.4 | 82.4% |
| 5 Mar 2024, 09:27 | 97.1 | 97.1% |
| 7 Feb 2024, 11:48 | 96.4 | 96.4% |
| 10 Jan 2024, 09:23 | 98 | 98% |
| 4 Dec 2023, 09:35 | 94.2 | 94.2% |
| 3 Nov 2023, 09:23 | 91 | 91% |
| 12 Oct 2023, 13:45 | 81.2 | 81.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.41 mg/l
Sampled 11 May 2026, 5 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 15:14 | 9.41 | 9.41 mg/l |
| 21 Apr 2026, 09:54 | 9.36 | 9.36 mg/l |
| 4 Mar 2026, 10:41 | 11.1 | 11.1 mg/l |
| 5 Feb 2026, 13:01 | 11.7 | 11.7 mg/l |
| 14 Jan 2026, 12:08 | 11.9 | 11.9 mg/l |
| 2 Dec 2025, 12:00 | 10.6 | 10.6 mg/l |
| 11 Nov 2025, 12:12 | 8.93 | 8.93 mg/l |
| 13 Oct 2025, 13:46 | 8.8 | 8.8 mg/l |
| 5 Sep 2025, 11:40 | 7.98 | 7.98 mg/l |
| 20 Aug 2025, 12:06 | 8.26 | 8.26 mg/l |
| 11 Jul 2025, 12:28 | 8.24 | 8.24 mg/l |
| 11 Jun 2025, 11:24 | 9.09 | 9.09 mg/l |
| 12 May 2025, 10:54 | 8.93 | 8.93 mg/l |
| 7 Apr 2025, 09:22 | 10.9 | 10.9 mg/l |
| 13 Mar 2025, 10:35 | 11.7 | 11.7 mg/l |
| 7 Feb 2025, 10:59 | 12.6 | 12.6 mg/l |
| 21 Jan 2025, 11:49 | 11.8 | 11.8 mg/l |
| 3 Dec 2024, 12:22 | 11.1 | 11.1 mg/l |
| 18 Nov 2024, 13:46 | 9.72 | 9.72 mg/l |
| 23 Oct 2024, 09:15 | 9.87 | 9.87 mg/l |
| 25 Sep 2024, 15:13 | 7.97 | 7.97 mg/l |
| 19 Aug 2024, 11:45 | 7.88 | 7.88 mg/l |
| 15 Jul 2024, 13:28 | 8.82 | 8.82 mg/l |
| 28 Jun 2024, 10:55 | 7.36 | 7.36 mg/l |
| 5 Mar 2024, 09:27 | 11.7 | 11.7 mg/l |
| 7 Feb 2024, 11:48 | 11.2 | 11.2 mg/l |
| 10 Jan 2024, 09:23 | 12.8 | 12.8 mg/l |
| 4 Dec 2023, 09:35 | 11.9 | 11.9 mg/l |
| 3 Nov 2023, 09:23 | 10.2 | 10.2 mg/l |
| 12 Oct 2023, 13:45 | 7.91 | 7.91 mg/l |
Water temperature
code 0076 · °C
14.4 °C
Sampled 11 May 2026, 5 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 15:14 | 14.4 | 14.4 °C |
| 21 Apr 2026, 09:54 | 12.6 | 12.6 °C |
| 4 Mar 2026, 10:41 | 9.1 | 9.1 °C |
| 5 Feb 2026, 13:01 | 6.4 | 6.4 °C |
| 14 Jan 2026, 12:08 | 6 | 6 °C |
| 2 Dec 2025, 12:00 | 8.8 | 8.8 °C |
| 11 Nov 2025, 12:12 | 12.2 | 12.2 °C |
| 13 Oct 2025, 13:46 | 14.3 | 14.3 °C |
| 5 Sep 2025, 11:40 | 17.6 | 17.6 °C |
| 20 Aug 2025, 12:06 | 19 | 19 °C |
| 11 Jul 2025, 12:28 | 22.8 | 22.8 °C |
| 11 Jun 2025, 11:24 | 18.3 | 18.3 °C |
| 12 May 2025, 10:54 | 17.7 | 17.7 °C |
| 7 Apr 2025, 09:22 | 10.3 | 10.3 °C |
| 13 Mar 2025, 10:35 | 7.5 | 7.5 °C |
| 7 Feb 2025, 10:59 | 5.4 | 5.4 °C |
| 21 Jan 2025, 11:49 | 6.1 | 6.1 °C |
| 3 Dec 2024, 12:22 | 8.9 | 8.9 °C |
| 18 Nov 2024, 13:46 | 9.9 | 9.9 °C |
| 23 Oct 2024, 09:15 | 12 | 12 °C |
| 25 Sep 2024, 15:13 | 14.5 | 14.5 °C |
| 19 Aug 2024, 11:45 | 19.8 | 19.8 °C |
| 15 Jul 2024, 13:28 | 18.3 | 18.3 °C |
| 28 Jun 2024, 10:55 | 20.8 | 20.8 °C |
| 5 Mar 2024, 09:27 | 7.3 | 7.3 °C |
| 7 Feb 2024, 11:48 | 8.8 | 8.8 °C |
| 10 Jan 2024, 09:23 | 4.2 | 4.2 °C |
| 4 Dec 2023, 09:35 | 5.3 | 5.3 °C |
| 3 Nov 2023, 09:23 | 10.3 | 10.3 °C |
| 12 Oct 2023, 13:45 | 16.5 | 16.5 °C |
pH
code 0061
7.7
Sampled 11 May 2026, 5 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 15:14 | 7.7 | 7.7 |
| 21 Apr 2026, 09:54 | 7.8 | 7.8 |
| 4 Mar 2026, 10:41 | 7.93 | 7.93 |
| 5 Feb 2026, 13:01 | 7.89 | 7.89 |
| 14 Jan 2026, 12:08 | 7.81 | 7.81 |
| 2 Dec 2025, 12:00 | 7.67 | 7.67 |
| 11 Nov 2025, 12:12 | 7.48 | 7.48 |
| 13 Oct 2025, 13:46 | 7.5 | 7.5 |
| 5 Sep 2025, 11:40 | 7.48 | 7.48 |
| 20 Aug 2025, 12:06 | 7.69 | 7.69 |
| 11 Jul 2025, 12:28 | 7.59 | 7.59 |
| 11 Jun 2025, 11:24 | 7.86 | 7.86 |
| 12 May 2025, 10:54 | 7.77 | 7.77 |
| 7 Apr 2025, 09:22 | 8.11 | 8.11 |
| 13 Mar 2025, 10:35 | 7.97 | 7.97 |
| 7 Feb 2025, 10:59 | 8.03 | 8.03 |
| 21 Jan 2025, 11:49 | 7.92 | 7.92 |
| 3 Dec 2024, 12:22 | 7.92 | 7.92 |
| 18 Nov 2024, 13:46 | 7.87 | 7.87 |
| 23 Oct 2024, 09:15 | 7.73 | 7.73 |
| 25 Sep 2024, 15:13 | 7.41 | 7.41 |
| 19 Aug 2024, 11:45 | 7.61 | 7.61 |
| 15 Jul 2024, 13:28 | 7.68 | 7.68 |
| 28 Jun 2024, 10:55 | 8.08 | 8.08 |
| 5 Mar 2024, 09:27 | 7.91 | 7.91 |
| 7 Feb 2024, 11:48 | 7.99 | 7.99 |
| 10 Jan 2024, 09:23 | 7.79 | 7.79 |
| 4 Dec 2023, 09:35 | 7.84 | 7.84 |
| 3 Nov 2023, 09:23 | 7.73 | 7.73 |
| 12 Oct 2023, 13:45 | 7.74 | 7.74 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.084 mg/l
Sampled 11 May 2026, 5 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 15:14 | 0.084 | 0.084 mg/l |
| 21 Apr 2026, 09:54 | 0.28 | 0.28 mg/l |
| 4 Mar 2026, 10:41 | 0.051 | 0.051 mg/l |
| 5 Feb 2026, 13:01 | 0.059 | 0.059 mg/l |
| 14 Jan 2026, 12:08 | 0.056 | 0.056 mg/l |
| 2 Dec 2025, 12:00 | 0.12 | 0.12 mg/l |
| 11 Nov 2025, 12:12 | 0.061 | 0.061 mg/l |
| 13 Oct 2025, 13:46 | 0.05 | 0.05 mg/l |
| 5 Sep 2025, 11:40 | 0.051 | 0.051 mg/l |
| 20 Aug 2025, 12:06 | 0.034 | 0.034 mg/l |
| 11 Jul 2025, 12:28 | 0.038 | 0.038 mg/l |
| 11 Jun 2025, 11:24 | 0.03 | 0.03 mg/l |
| 12 May 2025, 10:54 | 0.033 | 0.033 mg/l |
| 7 Apr 2025, 09:22 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Mar 2025, 10:35 | 0.039 | 0.039 mg/l |
| 7 Feb 2025, 10:59 | 0.052 | 0.052 mg/l |
| 21 Jan 2025, 11:49 | 0.069 | 0.069 mg/l |
| 3 Dec 2024, 12:22 | 0.085 | 0.085 mg/l |
| 18 Nov 2024, 13:46 | 0.031 | 0.031 mg/l |
| 23 Oct 2024, 09:15 | 0.034 | 0.034 mg/l |
| 25 Sep 2024, 15:13 | 0.13 | 0.13 mg/l |
| 19 Aug 2024, 11:45 | 0.038 | 0.038 mg/l |
| 15 Jul 2024, 13:28 | 0.047 | 0.047 mg/l |
| 28 Jun 2024, 10:55 | 0.073 | 0.073 mg/l |
| 5 Mar 2024, 09:27 | 0.098 | 0.098 mg/l |
| 7 Feb 2024, 11:48 | 0.21 | 0.21 mg/l |
| 10 Jan 2024, 09:23 | 0.26 | 0.26 mg/l |
| 4 Dec 2023, 09:35 | 0.57 | 0.57 mg/l |
| 3 Nov 2023, 09:23 | 0.057 | 0.057 mg/l |
| 12 Oct 2023, 13:45 | 0.1 | 0.1 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
14.9 mg/l
Sampled 11 May 2026, 5 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 15:14 | 14.9 | 14.9 mg/l |
| 21 Apr 2026, 09:54 | 10.9 | 10.9 mg/l |
| 4 Mar 2026, 10:41 | 8.52 | 8.52 mg/l |
| 5 Feb 2026, 13:01 | 9.45 | 9.45 mg/l |
| 14 Jan 2026, 12:08 | 11 | 11 mg/l |
| 2 Dec 2025, 12:00 | 11.9 | 11.9 mg/l |
| 11 Nov 2025, 12:12 | 9.85 | 9.85 mg/l |
| 13 Oct 2025, 13:46 | 16 | 16 mg/l |
| 5 Sep 2025, 11:40 | 12 | 12 mg/l |
| 20 Aug 2025, 12:06 | 15 | 15 mg/l |
| 11 Jul 2025, 12:28 | 13 | 13 mg/l |
| 11 Jun 2025, 11:24 | 8.96 | 8.96 mg/l |
| 12 May 2025, 10:54 | 13.9 | 13.9 mg/l |
| 7 Apr 2025, 09:22 | 15 | 15 mg/l |
| 13 Mar 2025, 10:35 | 9.97 | 9.97 mg/l |
| 7 Feb 2025, 10:59 | 12 | 12 mg/l |
| 21 Jan 2025, 11:49 | 12.9 | 12.9 mg/l |
| 3 Dec 2024, 12:22 | 7.95 | 7.95 mg/l |
| 18 Nov 2024, 13:46 | 12 | 12 mg/l |
| 23 Oct 2024, 09:15 | 8.67 | 8.67 mg/l |
| 25 Sep 2024, 15:13 | 8.27 | 8.27 mg/l |
| 19 Aug 2024, 11:45 | 22.9 | 22.9 mg/l |
| 15 Jul 2024, 13:28 | 14.9 | 14.9 mg/l |
| 28 Jun 2024, 10:55 | 13.9 | 13.9 mg/l |
| 5 Mar 2024, 09:27 | 9.22 | 9.22 mg/l |
| 7 Feb 2024, 11:48 | 9.71 | 9.71 mg/l |
| 10 Jan 2024, 09:23 | 9.83 | 9.83 mg/l |
| 4 Dec 2023, 09:35 | 9.88 | 9.88 mg/l |
| 3 Nov 2023, 09:23 | 8.55 | 8.55 mg/l |
| 12 Oct 2023, 13:45 | 15.9 | 15.9 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.12 mg/l
Sampled 11 May 2026, 5 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 15:14 | 0.12 | 0.12 mg/l |
| 21 Apr 2026, 09:54 | 0.087 | 0.087 mg/l |
| 4 Mar 2026, 10:41 | 0.064 | 0.064 mg/l |
| 5 Feb 2026, 13:01 | 0.071 | 0.071 mg/l |
| 14 Jan 2026, 12:08 | 0.074 | 0.074 mg/l |
| 2 Dec 2025, 12:00 | 0.11 | 0.11 mg/l |
| 11 Nov 2025, 12:12 | 0.2 | 0.2 mg/l |
| 13 Oct 2025, 13:46 | 0.2 | 0.2 mg/l |
| 5 Sep 2025, 11:40 | 0.18 | 0.18 mg/l |
| 20 Aug 2025, 12:06 | 0.19 | 0.19 mg/l |
| 11 Jul 2025, 12:28 | 0.23 | 0.23 mg/l |
| 11 Jun 2025, 11:24 | 0.17 | 0.17 mg/l |
| 12 May 2025, 10:54 | 0.14 | 0.14 mg/l |
| 7 Apr 2025, 09:22 | 0.056 | 0.056 mg/l |
| 13 Mar 2025, 10:35 | 0.079 | 0.079 mg/l |
| 7 Feb 2025, 10:59 | 0.079 | 0.079 mg/l |
| 21 Jan 2025, 11:49 | 0.11 | 0.11 mg/l |
| 3 Dec 2024, 12:22 | 0.093 | 0.093 mg/l |
| 18 Nov 2024, 13:46 | 0.095 | 0.095 mg/l |
| 23 Oct 2024, 09:15 | 0.1 | 0.1 mg/l |
| 25 Sep 2024, 15:13 | 0.2 | 0.2 mg/l |
| 19 Aug 2024, 11:45 | 0.23 | 0.23 mg/l |
| 15 Jul 2024, 13:28 | 0.26 | 0.26 mg/l |
| 28 Jun 2024, 10:55 | 0.16 | 0.16 mg/l |
| 5 Mar 2024, 09:27 | 0.093 | 0.093 mg/l |
| 7 Feb 2024, 11:48 | 0.16 | 0.16 mg/l |
| 10 Jan 2024, 09:23 | 0.093 | 0.093 mg/l |
| 4 Dec 2023, 09:35 | 0.17 | 0.17 mg/l |
| 3 Nov 2023, 09:23 | 0.12 | 0.12 mg/l |
| 12 Oct 2023, 13:45 | 0.38 | 0.38 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
823 µS/cm
Sampled 11 May 2026, 5 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 15:14 | 823 | 823 µS/cm |
| 21 Apr 2026, 09:54 | 801 | 801 µS/cm |
| 4 Mar 2026, 10:41 | 638 | 638 µS/cm |
| 5 Feb 2026, 13:01 | 631 | 631 µS/cm |
| 14 Jan 2026, 12:08 | 712 | 712 µS/cm |
| 2 Dec 2025, 12:00 | 728 | 728 µS/cm |
| 11 Nov 2025, 12:12 | 728 | 728 µS/cm |
| 13 Oct 2025, 13:46 | 900 | 900 µS/cm |
| 5 Sep 2025, 11:40 | 745 | 745 µS/cm |
| 20 Aug 2025, 12:06 | 884 | 884 µS/cm |
| 11 Jul 2025, 12:28 | 814 | 814 µS/cm |
| 11 Jun 2025, 11:24 | 786 | 786 µS/cm |
| 12 May 2025, 10:54 | 840 | 840 µS/cm |
| 7 Apr 2025, 09:22 | 831 | 831 µS/cm |
| 13 Mar 2025, 10:35 | 776 | 776 µS/cm |
| 7 Feb 2025, 10:59 | 730 | 730 µS/cm |
| 21 Jan 2025, 11:49 | 758 | 758 µS/cm |
| 3 Dec 2024, 12:22 | 627 | 627 µS/cm |
| 18 Nov 2024, 13:46 | 837 | 837 µS/cm |
| 23 Oct 2024, 09:15 | 667 | 667 µS/cm |
| 25 Sep 2024, 15:13 | 440 | 440 µS/cm |
| 19 Aug 2024, 11:45 | 891 | 891 µS/cm |
| 15 Jul 2024, 13:28 | 822 | 822 µS/cm |
| 28 Jun 2024, 10:55 | 859 | 859 µS/cm |
| 5 Mar 2024, 09:27 | 675 | 675 µS/cm |
| 7 Feb 2024, 11:48 | 730 | 730 µS/cm |
| 10 Jan 2024, 09:23 | 669 | 669 µS/cm |
| 4 Dec 2023, 09:35 | 798 | 798 µS/cm |
| 3 Nov 2023, 09:23 | 551 | 551 µS/cm |
| 12 Oct 2023, 13:45 | 909 | 909 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 | 30 | Oct 2023 – May 2026 | 92.3% 11 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 30 | Oct 2023 – May 2026 | 9.41 mg/l 11 May 2026 |
| Temperature of Water 0076 | River water | 30 | Oct 2023 – May 2026 | 14.4 °C 11 May 2026 |
| pH 0061 | River water | 30 | Oct 2023 – May 2026 | 7.7 11 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 30 | Oct 2023 – May 2026 | 0.084 mg/l 11 May 2026 |
| Nitrate as N 0117 | River water | 30 | Oct 2023 – May 2026 | 14.9 mg/l 11 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 30 | Oct 2023 – May 2026 | 0.12 mg/l 11 May 2026 |
| Conductivity at 25 C 0077 | River water | 30 | Oct 2023 – May 2026 | 823 µS/cm 11 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 30 | Oct 2023 – May 2026 | 150 mg/l 11 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 30 | Oct 2023 – May 2026 | 0.00107 mg/l 11 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 24 | Jun 2024 – May 2026 | 1.3 mg/l 11 May 2026 |
| Nitrite as N 0118 | River water | 30 | Oct 2023 – May 2026 | 0.14 mg/l 11 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 30 | Oct 2023 – May 2026 | 15 mg/l 11 May 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.