North Brook Horn Mill Road Bridge
EA name: NORTH BK. HORN MILL ROAD BRIDGE
Environment Agency sampling point AN-NTBK115H · 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
- 3 Sep 2026, 13:1828 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 31 since 2 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 495334, 310402As published, to the nearest 1 m. Open in a map
- River, by its own name
- North Brook
- River, by the map
- North BrookPlaced on the river its name gives, 2 m from the line.
- Next gauge downstream
- NORTH BROOK GS EMPINGHAM 1.8 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (23 samples)
Planned investigation (local monitoring) (6 samples)
Monitoring (national agency policy) (2 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
93.4%
Sampled 3 Sep 2026, 28 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Sep 2026, 13:18 | 93.4 | 93.4% |
| 3 Sep 2026, 10:49 | 90.7 | 90.7% |
| 7 Aug 2026, 10:19 | 93.7 | 93.7% |
| 3 Jul 2026, 09:41 | 93.2 | 93.2% |
| 12 Jun 2026, 12:58 | 98.1 | 98.1% |
| 11 May 2026, 15:48 | 101 | 101% |
| 29 Apr 2026, 13:39 | 102.2 | 102.2% |
| 17 Apr 2026, 14:19 | 104.8 | 104.8% |
| 2 Mar 2026, 14:57 | 99.6 | 99.6% |
| 11 Feb 2026, 11:37 | 95.2 | 95.2% |
| 7 Jan 2026, 10:00 | 99.2 | 99.2% |
| 5 Dec 2025, 10:12 | 94.2 | 94.2% |
| 5 Nov 2025, 10:44 | 81.7 | 81.7% |
| 8 Oct 2025, 11:41 | 86.5 | 86.5% |
| 22 Apr 2025, 11:33 | 101 | 101% |
| 10 Mar 2025, 11:30 | 94.2 | 94.2% |
| 5 Feb 2025, 09:51 | 94.9 | 94.9% |
| 10 Jan 2025, 14:44 | 96.6 | 96.6% |
| 11 Dec 2024, 09:29 | 94.7 | 94.7% |
| 4 Nov 2024, 09:30 | 87.1 | 87.1% |
| 4 Oct 2024, 11:33 | 90.6 | 90.6% |
| 13 Sep 2024, 12:56 | 94.5 | 94.5% |
| 30 Aug 2024, 10:29 | 90.9 | 90.9% |
| 4 Jul 2024, 10:06 | 97.7 | 97.7% |
| 28 Jun 2024, 10:51 | 98.4 | 98.4% |
| 5 Mar 2024, 11:11 | 96.1 | 96.1% |
| 9 Feb 2024, 11:17 | 95.6 | 95.6% |
| 9 Jan 2024, 11:49 | 92.7 | 92.7% |
| 1 Dec 2023, 09:18 | 96.7 | 96.7% |
| 9 Nov 2023, 12:26 | 91.8 | 91.8% |
| 2 Oct 2023, 11:31 | 83 | 83% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.16 mg/l
Sampled 3 Sep 2026, 28 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Sep 2026, 13:18 | 9.16 | 9.16 mg/l |
| 3 Sep 2026, 10:49 | 9.01 | 9.01 mg/l |
| 7 Aug 2026, 10:19 | 9.7 | 9.7 mg/l |
| 3 Jul 2026, 09:41 | 9.56 | 9.56 mg/l |
| 12 Jun 2026, 12:58 | 9.93 | 9.93 mg/l |
| 11 May 2026, 15:48 | 11.1 | 11.1 mg/l |
| 29 Apr 2026, 13:39 | 10.6 | 10.6 mg/l |
| 17 Apr 2026, 14:19 | 11.1 | 11.1 mg/l |
| 2 Mar 2026, 14:57 | 11 | 11 mg/l |
| 11 Feb 2026, 11:37 | 10.9 | 10.9 mg/l |
| 7 Jan 2026, 10:00 | 12.2 | 12.2 mg/l |
| 5 Dec 2025, 10:12 | 11.7 | 11.7 mg/l |
| 5 Nov 2025, 10:44 | 8.69 | 8.69 mg/l |
| 8 Oct 2025, 11:41 | 9.03 | 9.03 mg/l |
| 22 Apr 2025, 11:33 | 10.9 | 10.9 mg/l |
| 10 Mar 2025, 11:30 | 10.8 | 10.8 mg/l |
| 5 Feb 2025, 09:51 | 11.5 | 11.5 mg/l |
| 10 Jan 2025, 14:44 | 12.2 | 12.2 mg/l |
| 11 Dec 2024, 09:29 | 11.2 | 11.2 mg/l |
| 4 Nov 2024, 09:30 | 9.58 | 9.58 mg/l |
| 4 Oct 2024, 11:33 | 9.97 | 9.97 mg/l |
| 13 Sep 2024, 12:56 | 10.3 | 10.3 mg/l |
| 30 Aug 2024, 10:29 | 9.58 | 9.58 mg/l |
| 4 Jul 2024, 10:06 | 10.3 | 10.3 mg/l |
| 28 Jun 2024, 10:51 | 10 | 10 mg/l |
| 5 Mar 2024, 11:11 | 11.1 | 11.1 mg/l |
| 9 Feb 2024, 11:17 | 11.2 | 11.2 mg/l |
| 9 Jan 2024, 11:49 | 11.1 | 11.1 mg/l |
| 1 Dec 2023, 09:18 | 12.1 | 12.1 mg/l |
| 9 Nov 2023, 12:26 | 10.5 | 10.5 mg/l |
| 2 Oct 2023, 11:31 | 8.57 | 8.57 mg/l |
Water temperature
code 0076 · °C
16.2 °C
Sampled 3 Sep 2026, 28 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Sep 2026, 13:18 | 16.2 | 16.2 °C |
| 3 Sep 2026, 10:49 | 15.6 | 15.6 °C |
| 7 Aug 2026, 10:19 | 13.7 | 13.7 °C |
| 3 Jul 2026, 09:41 | 14.1 | 14.1 °C |
| 12 Jun 2026, 12:58 | 14.7 | 14.7 °C |
| 11 May 2026, 15:48 | 10.9 | 10.9 °C |
| 29 Apr 2026, 13:39 | 13.6 | 13.6 °C |
| 17 Apr 2026, 14:19 | 12.8 | 12.8 °C |
| 2 Mar 2026, 14:57 | 11 | 11 °C |
| 11 Feb 2026, 11:37 | 9.3 | 9.3 °C |
| 7 Jan 2026, 10:00 | 6.5 | 6.5 °C |
| 5 Dec 2025, 10:12 | 6.1 | 6.1 °C |
| 5 Nov 2025, 10:44 | 12.5 | 12.5 °C |
| 8 Oct 2025, 11:41 | 13.3 | 13.3 °C |
| 22 Apr 2025, 11:33 | 11.8 | 11.8 °C |
| 10 Mar 2025, 11:30 | 9.2 | 9.2 °C |
| 5 Feb 2025, 09:51 | 6.9 | 6.9 °C |
| 10 Jan 2025, 14:44 | 5.4 | 5.4 °C |
| 11 Dec 2024, 09:29 | 8 | 8 °C |
| 4 Nov 2024, 09:30 | 11 | 11 °C |
| 4 Oct 2024, 11:33 | 11 | 11 °C |
| 13 Sep 2024, 12:56 | 11.4 | 11.4 °C |
| 30 Aug 2024, 10:29 | 12.9 | 12.9 °C |
| 4 Jul 2024, 10:06 | 12.7 | 12.7 °C |
| 28 Jun 2024, 10:51 | 14.4 | 14.4 °C |
| 5 Mar 2024, 11:11 | 8.8 | 8.8 °C |
| 9 Feb 2024, 11:17 | 8.4 | 8.4 °C |
| 9 Jan 2024, 11:49 | 7.4 | 7.4 °C |
| 1 Dec 2023, 09:18 | 5.7 | 5.7 °C |
| 9 Nov 2023, 12:26 | 9.4 | 9.4 °C |
| 2 Oct 2023, 11:31 | 13.8 | 13.8 °C |
pH
code 0061
8.19
Sampled 3 Sep 2026, 28 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Sep 2026, 13:18 | 8.19 | 8.19 |
| 3 Sep 2026, 10:49 | 7.95 | 7.95 |
| 7 Aug 2026, 10:19 | 8.13 | 8.13 |
| 3 Jul 2026, 09:41 | 7.98 | 7.98 |
| 12 Jun 2026, 12:58 | 8.03 | 8.03 |
| 11 May 2026, 15:48 | 8.21 | 8.21 |
| 29 Apr 2026, 13:39 | 8.1 | 8.1 |
| 17 Apr 2026, 14:19 | 8.13 | 8.13 |
| 2 Mar 2026, 14:57 | 7.93 | 7.93 |
| 11 Feb 2026, 11:37 | 7.85 | 7.85 |
| 7 Jan 2026, 10:00 | 8.05 | 8.05 |
| 5 Dec 2025, 10:12 | 7.94 | 7.94 |
| 5 Nov 2025, 10:44 | 7.9 | 7.9 |
| 8 Oct 2025, 11:41 | 7.98 | 7.98 |
| 22 Apr 2025, 11:33 | 8.14 | 8.14 |
| 10 Mar 2025, 11:30 | 8.2 | 8.2 |
| 5 Feb 2025, 09:51 | 7.95 | 7.95 |
| 10 Jan 2025, 14:44 | 8.03 | 8.03 |
| 11 Dec 2024, 09:29 | 8.08 | 8.08 |
| 4 Nov 2024, 09:30 | 7.94 | 7.94 |
| 4 Oct 2024, 11:33 | 7.84 | 7.84 |
| 13 Sep 2024, 12:56 | 7.98 | 7.98 |
| 30 Aug 2024, 10:29 | 7.99 | 7.99 |
| 4 Jul 2024, 10:06 | 8.07 | 8.07 |
| 28 Jun 2024, 10:51 | 8.06 | 8.06 |
| 5 Mar 2024, 11:11 | 7.98 | 7.98 |
| 9 Feb 2024, 11:17 | 8.06 | 8.06 |
| 9 Jan 2024, 11:49 | 7.94 | 7.94 |
| 1 Dec 2023, 09:18 | 7.87 | 7.87 |
| 9 Nov 2023, 12:26 | 7.9 | 7.9 |
| 2 Oct 2023, 11:31 | 7.82 | 7.82 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.21 mg/l
Sampled 3 Sep 2026, 28 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Sep 2026, 13:18 | 0.21 | 0.21 mg/l |
| 7 Aug 2026, 10:19 | 0.27 | 0.27 mg/l |
| 3 Jul 2026, 09:41 | 0.19 | 0.19 mg/l |
| 12 Jun 2026, 12:58 | 0.14 | 0.14 mg/l |
| 11 May 2026, 15:48 | 0.07 | 0.07 mg/l |
| 17 Apr 2026, 14:19 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Mar 2026, 14:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Feb 2026, 11:37 | 0.031 | 0.031 mg/l |
| 7 Jan 2026, 10:00 | 0.058 | 0.058 mg/l |
| 5 Dec 2025, 10:12 | 0.076 | 0.076 mg/l |
| 5 Nov 2025, 10:44 | 0.17 | 0.17 mg/l |
| 8 Oct 2025, 11:41 | 0.2 | 0.2 mg/l |
| 22 Apr 2025, 11:33 | 0.071 | 0.071 mg/l |
| 10 Mar 2025, 11:30 | 0.06 | 0.06 mg/l |
| 5 Feb 2025, 09:51 | 0.067 | 0.067 mg/l |
| 10 Jan 2025, 14:44 | 0.065 | 0.065 mg/l |
| 11 Dec 2024, 09:29 | 0.058 | 0.058 mg/l |
| 4 Nov 2024, 09:30 | 0.16 | 0.16 mg/l |
| 4 Oct 2024, 11:33 | 0.095 | 0.095 mg/l |
| 13 Sep 2024, 12:56 | 0.12 | 0.12 mg/l |
| 30 Aug 2024, 10:29 | 0.12 | 0.12 mg/l |
| 4 Jul 2024, 10:06 | 0.089 | 0.089 mg/l |
| 28 Jun 2024, 10:51 | 0.063 | 0.063 mg/l |
| 5 Mar 2024, 11:11 | 0.034 | 0.034 mg/l |
| 9 Feb 2024, 11:17 | 0.057 | 0.057 mg/l |
| 9 Jan 2024, 11:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Dec 2023, 09:18 | 0.091 | 0.091 mg/l |
| 9 Nov 2023, 12:26 | 0.06 | 0.06 mg/l |
| 2 Oct 2023, 11:31 | 0.19 | 0.19 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
7 mg/l
Sampled 3 Sep 2026, 28 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Sep 2026, 13:18 | 7 | 7 mg/l |
| 7 Aug 2026, 10:19 | 7.36 | 7.36 mg/l |
| 3 Jul 2026, 09:41 | 7.82 | 7.82 mg/l |
| 12 Jun 2026, 12:58 | 8.55 | 8.55 mg/l |
| 11 May 2026, 15:48 | 9.65 | 9.65 mg/l |
| 17 Apr 2026, 14:19 | 11 | 11 mg/l |
| 2 Mar 2026, 14:57 | 12 | 12 mg/l |
| 11 Feb 2026, 11:37 | 12 | 12 mg/l |
| 7 Jan 2026, 10:00 | 12 | 12 mg/l |
| 5 Dec 2025, 10:12 | 9.95 | 9.95 mg/l |
| 5 Nov 2025, 10:44 | 6.92 | 6.92 mg/l |
| 8 Oct 2025, 11:41 | 6.89 | 6.89 mg/l |
| 22 Apr 2025, 11:33 | 11 | 11 mg/l |
| 10 Mar 2025, 11:30 | 11 | 11 mg/l |
| 5 Feb 2025, 09:51 | 12 | 12 mg/l |
| 10 Jan 2025, 14:44 | 12 | 12 mg/l |
| 11 Dec 2024, 09:29 | 11 | 11 mg/l |
| 4 Nov 2024, 09:30 | 9.05 | 9.05 mg/l |
| 4 Oct 2024, 11:33 | 9.67 | 9.67 mg/l |
| 13 Sep 2024, 12:56 | 8.17 | 8.17 mg/l |
| 30 Aug 2024, 10:29 | 7.66 | 7.66 mg/l |
| 4 Jul 2024, 10:06 | 8.85 | 8.85 mg/l |
| 28 Jun 2024, 10:51 | 8.44 | 8.44 mg/l |
| 5 Mar 2024, 11:11 | 12 | 12 mg/l |
| 9 Feb 2024, 11:17 | 11 | 11 mg/l |
| 9 Jan 2024, 11:49 | 13 | 13 mg/l |
| 1 Dec 2023, 09:18 | 12 | 12 mg/l |
| 9 Nov 2023, 12:26 | 11 | 11 mg/l |
| 2 Oct 2023, 11:31 | 7.84 | 7.84 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.05 mg/l
Sampled 3 Sep 2026, 28 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Sep 2026, 13:18 | 0.05 | 0.05 mg/l |
| 7 Aug 2026, 10:19 | 0.047 | 0.047 mg/l |
| 3 Jul 2026, 09:41 | 0.025 | 0.025 mg/l |
| 12 Jun 2026, 12:58 | 0.053 | 0.053 mg/l |
| 11 May 2026, 15:48 | 0.028 | 0.028 mg/l |
| 17 Apr 2026, 14:19 | 0.026 | 0.026 mg/l |
| 2 Mar 2026, 14:57 | 0.053 | 0.053 mg/l |
| 11 Feb 2026, 11:37 | 0.061 | 0.061 mg/l |
| 7 Jan 2026, 10:00 | 0.052 | 0.052 mg/l |
| 5 Dec 2025, 10:12 | 0.05 | 0.05 mg/l |
| 5 Nov 2025, 10:44 | 0.055 | 0.055 mg/l |
| 8 Oct 2025, 11:41 | 0.059 | 0.059 mg/l |
| 22 Apr 2025, 11:33 | 0.047 | 0.047 mg/l |
| 10 Mar 2025, 11:30 | 0.036 | 0.036 mg/l |
| 5 Feb 2025, 09:51 | 0.06 | 0.06 mg/l |
| 10 Jan 2025, 14:44 | 0.087 | 0.087 mg/l |
| 11 Dec 2024, 09:29 | 0.056 | 0.056 mg/l |
| 4 Nov 2024, 09:30 | 0.05 | 0.05 mg/l |
| 4 Oct 2024, 11:33 | 0.06 | 0.06 mg/l |
| 13 Sep 2024, 12:56 | 0.033 | 0.033 mg/l |
| 30 Aug 2024, 10:29 | 0.026 | 0.026 mg/l |
| 4 Jul 2024, 10:06 | 0.024 | 0.024 mg/l |
| 28 Jun 2024, 10:51 | 0.03 | 0.03 mg/l |
| 5 Mar 2024, 11:11 | 0.05 | 0.05 mg/l |
| 9 Feb 2024, 11:17 | 0.081 | 0.081 mg/l |
| 9 Jan 2024, 11:49 | 0.035 | 0.035 mg/l |
| 1 Dec 2023, 09:18 | 0.045 | 0.045 mg/l |
| 9 Nov 2023, 12:26 | 0.051 | 0.051 mg/l |
| 2 Oct 2023, 11:31 | 0.035 | 0.035 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
671 µS/cm
Sampled 3 Sep 2026, 28 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Sep 2026, 13:18 | 671 | 671 µS/cm |
| 3 Sep 2026, 10:49 | 668 | 668 µS/cm |
| 7 Aug 2026, 10:19 | 678 | 678 µS/cm |
| 3 Jul 2026, 09:41 | 654 | 654 µS/cm |
| 12 Jun 2026, 12:58 | 690 | 690 µS/cm |
| 11 May 2026, 15:48 | 687 | 687 µS/cm |
| 29 Apr 2026, 13:39 | 678 | 678 µS/cm |
| 17 Apr 2026, 14:19 | 680 | 680 µS/cm |
| 2 Mar 2026, 14:57 | 666 | 666 µS/cm |
| 11 Feb 2026, 11:37 | 657 | 657 µS/cm |
| 7 Jan 2026, 10:00 | 740 | 740 µS/cm |
| 5 Dec 2025, 10:12 | 604 | 604 µS/cm |
| 5 Nov 2025, 10:44 | 678 | 678 µS/cm |
| 8 Oct 2025, 11:41 | 645 | 645 µS/cm |
| 22 Apr 2025, 11:33 | 695 | 695 µS/cm |
| 10 Mar 2025, 11:30 | 673 | 673 µS/cm |
| 5 Feb 2025, 09:51 | 698 | 698 µS/cm |
| 10 Jan 2025, 14:44 | 652 | 652 µS/cm |
| 11 Dec 2024, 09:29 | 633 | 633 µS/cm |
| 4 Nov 2024, 09:30 | 694 | 694 µS/cm |
| 4 Oct 2024, 11:33 | 592 | 592 µS/cm |
| 13 Sep 2024, 12:56 | 676 | 676 µS/cm |
| 30 Aug 2024, 10:29 | 659 | 659 µS/cm |
| 4 Jul 2024, 10:06 | 680 | 680 µS/cm |
| 28 Jun 2024, 10:51 | 675 | 675 µS/cm |
| 5 Mar 2024, 11:11 | 714 | 714 µS/cm |
| 9 Feb 2024, 11:17 | 610 | 610 µS/cm |
| 9 Jan 2024, 11:49 | 706 | 706 µS/cm |
| 1 Dec 2023, 09:18 | 707 | 707 µS/cm |
| 9 Nov 2023, 12:26 | 699 | 699 µS/cm |
| 2 Oct 2023, 11:31 | 695 | 695 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 | 31 | Oct 2023 – Sep 2026 | 93.4% 3 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 31 | Oct 2023 – Sep 2026 | 9.16 mg/l 3 Sep 2026 |
| Temperature of Water 0076 | River water | 31 | Oct 2023 – Sep 2026 | 16.2 °C 3 Sep 2026 |
| pH 0061 | River water | 31 | Oct 2023 – Sep 2026 | 8.19 3 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 29 | Oct 2023 – Sep 2026 | 0.21 mg/l 3 Sep 2026 |
| Nitrate as N 0117 | River water | 29 | Oct 2023 – Sep 2026 | 7 mg/l 3 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 29 | Oct 2023 – Sep 2026 | 0.05 mg/l 3 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 31 | Oct 2023 – Sep 2026 | 671 µS/cm 3 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 29 | Oct 2023 – Sep 2026 | 220 mg/l 3 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 29 | Oct 2023 – Sep 2026 | 0.00602 mg/l 3 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 6 | Oct 2023 – Mar 2024 | 1.2 mg/l 5 Mar 2024 |
| Nitrite as N 0118 | River water | 29 | Oct 2023 – Sep 2026 | 0.1 mg/l 3 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 29 | Oct 2023 – Sep 2026 | 7.1 mg/l 3 Sep 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.