Harpers Brook Brigstock-Grafton Bridge
EA name: HARPERS BK.BRIGSTOCK-GRAFTON BRIDGE
Environment Agency sampling point AN-HARP140B · 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
- 20 Mar 2026, 08:476 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
- 23 since 3 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 494666, 285109As published, to the nearest 1 m. Open in a map
- River, by its own name
- Its name does not give one
- River, by the map
- Harper's BrookPlaced by position alone, on a line whose map name differs from its own, 0 m from the line.
- Next gauge downstream
- Old Mill Bridge, Lowick On the Harpers Brook · 7.6 km along the river
- Nearest gauge upstream
- Brigstock On the Harpers Brook · 0.4 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (17 samples)
Planned investigation (local monitoring) (6 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
96.8%
Sampled 20 Mar 2026, 6 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2026, 08:47 | 96.8 | 96.8% |
| 4 Feb 2026, 09:17 | 95.4 | 95.4% |
| 8 Jan 2026, 15:01 | 94.1 | 94.1% |
| 3 Dec 2025, 12:51 | 95 | 95% |
| 3 Nov 2025, 09:03 | 86.8 | 86.8% |
| 6 Oct 2025, 09:39 | 85.8 | 85.8% |
| 22 Apr 2025, 14:11 | 125.9 | 125.9% |
| 6 Mar 2025, 10:24 | 94.8 | 94.8% |
| 14 Feb 2025, 11:54 | 98.5 | 98.5% |
| 3 Jan 2025, 09:14 | 96.6 | 96.6% |
| 5 Dec 2024, 09:01 | 95.6 | 95.6% |
| 11 Nov 2024, 08:49 | 90.4 | 90.4% |
| 4 Oct 2024, 08:31 | 97.4 | 97.4% |
| 2 Sep 2024, 08:09 | 82.3 | 82.3% |
| 9 Aug 2024, 13:30 | 120.2 | 120.2% |
| 9 Jul 2024, 09:47 | 94.1 | 94.1% |
| 3 Jun 2024, 11:17 | 101.1 | 101.1% |
| 7 Mar 2024, 15:05 | 99.8 | 99.8% |
| 6 Feb 2024, 12:11 | 100.7 | 100.7% |
| 4 Jan 2024, 09:01 | 95.7 | 95.7% |
| 11 Dec 2023, 08:49 | 95.3 | 95.3% |
| 3 Nov 2023, 08:20 | 93 | 93% |
| 3 Oct 2023, 08:37 | 88.9 | 88.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11.3 mg/l
Sampled 20 Mar 2026, 6 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2026, 08:47 | 11.3 | 11.3 mg/l |
| 4 Feb 2026, 09:17 | 12 | 12 mg/l |
| 8 Jan 2026, 15:01 | 11.8 | 11.8 mg/l |
| 3 Dec 2025, 12:51 | 11.3 | 11.3 mg/l |
| 3 Nov 2025, 09:03 | 9.85 | 9.85 mg/l |
| 6 Oct 2025, 09:39 | 9.33 | 9.33 mg/l |
| 22 Apr 2025, 14:11 | 13.6 | 13.6 mg/l |
| 6 Mar 2025, 10:24 | 11.7 | 11.7 mg/l |
| 14 Feb 2025, 11:54 | 12.4 | 12.4 mg/l |
| 3 Jan 2025, 09:14 | 12.7 | 12.7 mg/l |
| 5 Dec 2024, 09:01 | 11 | 11 mg/l |
| 11 Nov 2024, 08:49 | 10.4 | 10.4 mg/l |
| 4 Oct 2024, 08:31 | 11 | 11 mg/l |
| 2 Sep 2024, 08:09 | 8.3 | 8.3 mg/l |
| 9 Aug 2024, 13:30 | 11.4 | 11.4 mg/l |
| 9 Jul 2024, 09:47 | 9.69 | 9.69 mg/l |
| 3 Jun 2024, 11:17 | 10.5 | 10.5 mg/l |
| 7 Mar 2024, 15:05 | 11.7 | 11.7 mg/l |
| 6 Feb 2024, 12:11 | 11.5 | 11.5 mg/l |
| 4 Jan 2024, 09:01 | 11.4 | 11.4 mg/l |
| 11 Dec 2023, 08:49 | 11.4 | 11.4 mg/l |
| 3 Nov 2023, 08:20 | 10.5 | 10.5 mg/l |
| 3 Oct 2023, 08:37 | 9.22 | 9.22 mg/l |
Water temperature
code 0076 · °C
8.4 °C
Sampled 20 Mar 2026, 6 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2026, 08:47 | 8.4 | 8.4 °C |
| 4 Feb 2026, 09:17 | 5.5 | 5.5 °C |
| 8 Jan 2026, 15:01 | 5.5 | 5.5 °C |
| 3 Dec 2025, 12:51 | 7.8 | 7.8 °C |
| 3 Nov 2025, 09:03 | 9.7 | 9.7 °C |
| 6 Oct 2025, 09:39 | 11.5 | 11.5 °C |
| 22 Apr 2025, 14:11 | 11.7 | 11.7 °C |
| 6 Mar 2025, 10:24 | 6.3 | 6.3 °C |
| 14 Feb 2025, 11:54 | 5.4 | 5.4 °C |
| 3 Jan 2025, 09:14 | 3.9 | 3.9 °C |
| 5 Dec 2024, 09:01 | 9.1 | 9.1 °C |
| 11 Nov 2024, 08:49 | 9 | 9 °C |
| 4 Oct 2024, 08:31 | 9.9 | 9.9 °C |
| 2 Sep 2024, 08:09 | 14.9 | 14.9 °C |
| 9 Aug 2024, 13:30 | 17.6 | 17.6 °C |
| 9 Jul 2024, 09:47 | 13.9 | 13.9 °C |
| 3 Jun 2024, 11:17 | 13.5 | 13.5 °C |
| 7 Mar 2024, 15:05 | 8.2 | 8.2 °C |
| 6 Feb 2024, 12:11 | 9.6 | 9.6 °C |
| 4 Jan 2024, 09:01 | 7.7 | 7.7 °C |
| 11 Dec 2023, 08:49 | 7.5 | 7.5 °C |
| 3 Nov 2023, 08:20 | 9.8 | 9.8 °C |
| 3 Oct 2023, 08:37 | 13.6 | 13.6 °C |
pH
code 0061
7.92
Sampled 20 Mar 2026, 6 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2026, 08:47 | 7.92 | 7.92 |
| 4 Feb 2026, 09:17 | 7.91 | 7.91 |
| 8 Jan 2026, 15:01 | 7.9 | 7.9 |
| 3 Dec 2025, 12:51 | 7.87 | 7.87 |
| 3 Nov 2025, 09:03 | 7.76 | 7.76 |
| 6 Oct 2025, 09:39 | 7.71 | 7.71 |
| 22 Apr 2025, 14:11 | 8.04 | 8.04 |
| 6 Mar 2025, 10:24 | 8.07 | 8.07 |
| 14 Feb 2025, 11:54 | 7.95 | 7.95 |
| 3 Jan 2025, 09:14 | 8.03 | 8.03 |
| 5 Dec 2024, 09:01 | 7.96 | 7.96 |
| 11 Nov 2024, 08:49 | 7.88 | 7.88 |
| 4 Oct 2024, 08:31 | 7.88 | 7.88 |
| 2 Sep 2024, 08:09 | 7.73 | 7.73 |
| 9 Aug 2024, 13:30 | 7.97 | 7.97 |
| 9 Jul 2024, 09:47 | 7.96 | 7.96 |
| 3 Jun 2024, 11:17 | 7.89 | 7.89 |
| 7 Mar 2024, 15:05 | 7.99 | 7.99 |
| 6 Feb 2024, 12:11 | 7.98 | 7.98 |
| 4 Jan 2024, 09:01 | 7.74 | 7.74 |
| 11 Dec 2023, 08:49 | 7.79 | 7.79 |
| 3 Nov 2023, 08:20 | 7.86 | 7.86 |
| 3 Oct 2023, 08:37 | 7.93 | 7.93 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 20 Mar 2026, 6 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2026, 08:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Feb 2026, 09:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Jan 2026, 15:01 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Dec 2025, 12:51 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Nov 2025, 09:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Oct 2025, 09:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Mar 2025, 10:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Feb 2025, 11:54 | 0.034 | 0.034 mg/l |
| 3 Jan 2025, 09:14 | 0.052 | 0.052 mg/l |
| 5 Dec 2024, 09:01 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Nov 2024, 08:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Oct 2024, 08:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Sep 2024, 08:09 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Aug 2024, 13:30 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Jul 2024, 09:47 | 0.048 | 0.048 mg/l |
| 3 Jun 2024, 11:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Mar 2024, 15:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Jan 2024, 09:01 | 0.12 | 0.12 mg/l |
| 11 Dec 2023, 08:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Nov 2023, 08:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Oct 2023, 08:37 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
4.19 mg/l
Sampled 20 Mar 2026, 6 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2026, 08:47 | 4.19 | 4.19 mg/l |
| 4 Feb 2026, 09:17 | 6.49 | 6.49 mg/l |
| 8 Jan 2026, 15:01 | 4.88 | 4.88 mg/l |
| 3 Dec 2025, 12:51 | 17 | 17 mg/l |
| 3 Nov 2025, 09:03 | 1.69 | 1.69 mg/l |
| 6 Oct 2025, 09:39 | 2.09 | 2.09 mg/l |
| 6 Mar 2025, 10:24 | 4.19 | 4.19 mg/l |
| 14 Feb 2025, 11:54 | 5.49 | 5.49 mg/l |
| 3 Jan 2025, 09:14 | 5.58 | 5.58 mg/l |
| 11 Nov 2024, 08:49 | 3.37 | 3.37 mg/l |
| 4 Oct 2024, 08:31 | 8.69 | 8.69 mg/l |
| 2 Sep 2024, 08:09 | 2.69 | 2.69 mg/l |
| 9 Aug 2024, 13:30 | 2.79 | 2.79 mg/l |
| 9 Jul 2024, 09:47 | 1.58 | 1.58 mg/l |
| 3 Jun 2024, 11:17 | 3.08 | 3.08 mg/l |
| 7 Mar 2024, 15:05 | 4.58 | 4.58 mg/l |
| 4 Jan 2024, 09:01 | 4.88 | 4.88 mg/l |
| 11 Dec 2023, 08:49 | 5.29 | 5.29 mg/l |
| 3 Nov 2023, 08:20 | 9.89 | 9.89 mg/l |
| 3 Oct 2023, 08:37 | 1.69 | 1.69 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.019 mg/l
Sampled 20 Mar 2026, 6 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2026, 08:47 | 0.019 | 0.019 mg/l |
| 4 Feb 2026, 09:17 | 0.033 | 0.033 mg/l |
| 8 Jan 2026, 15:01 | 0.052 | 0.052 mg/l |
| 3 Dec 2025, 12:51 | 0.037 | 0.037 mg/l |
| 3 Nov 2025, 09:03 | 0.032 | 0.032 mg/l |
| 6 Oct 2025, 09:39 | 0.037 | 0.037 mg/l |
| 6 Mar 2025, 10:24 | 0.02 | 0.02 mg/l |
| 14 Feb 2025, 11:54 | 0.031 | 0.031 mg/l |
| 3 Jan 2025, 09:14 | 0.036 | 0.036 mg/l |
| 5 Dec 2024, 09:01 | 0.035 | 0.035 mg/l |
| 11 Nov 2024, 08:49 | 0.016 | 0.016 mg/l |
| 4 Oct 2024, 08:31 | 0.043 | 0.043 mg/l |
| 2 Sep 2024, 08:09 | 0.027 | 0.027 mg/l |
| 9 Aug 2024, 13:30 | 0.043 | 0.043 mg/l |
| 9 Jul 2024, 09:47 | 0.035 | 0.035 mg/l |
| 3 Jun 2024, 11:17 | 0.015 | 0.015 mg/l |
| 7 Mar 2024, 15:05 | 0.027 | 0.027 mg/l |
| 6 Feb 2024, 12:11 | 0.062 | 0.062 mg/l |
| 4 Jan 2024, 09:01 | 0.047 | 0.047 mg/l |
| 11 Dec 2023, 08:49 | 0.046 | 0.046 mg/l |
| 3 Nov 2023, 08:20 | 0.056 | 0.056 mg/l |
| 3 Oct 2023, 08:37 | 0.045 | 0.045 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
999 µS/cm
Sampled 20 Mar 2026, 6 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2026, 08:47 | 999 | 999 µS/cm |
| 4 Feb 2026, 09:17 | 690 | 690 µS/cm |
| 8 Jan 2026, 15:01 | 1246 | 1246 µS/cm |
| 3 Dec 2025, 12:51 | 858 | 858 µS/cm |
| 3 Nov 2025, 09:03 | 974 | 974 µS/cm |
| 6 Oct 2025, 09:39 | 1051 | 1051 µS/cm |
| 22 Apr 2025, 14:11 | 1147 | 1147 µS/cm |
| 6 Mar 2025, 10:24 | 1006 | 1006 µS/cm |
| 14 Feb 2025, 11:54 | 920 | 920 µS/cm |
| 3 Jan 2025, 09:14 | 801 | 801 µS/cm |
| 5 Dec 2024, 09:01 | 895 | 895 µS/cm |
| 11 Nov 2024, 08:49 | 1175 | 1175 µS/cm |
| 4 Oct 2024, 08:31 | 803 | 803 µS/cm |
| 2 Sep 2024, 08:09 | 1300 | 1300 µS/cm |
| 9 Aug 2024, 13:30 | 1267 | 1267 µS/cm |
| 9 Jul 2024, 09:47 | 830 | 830 µS/cm |
| 3 Jun 2024, 11:17 | 1202 | 1202 µS/cm |
| 7 Mar 2024, 15:05 | 994 | 994 µS/cm |
| 6 Feb 2024, 12:11 | 1060 | 1060 µS/cm |
| 4 Jan 2024, 09:01 | 656 | 656 µS/cm |
| 11 Dec 2023, 08:49 | 563 | 563 µS/cm |
| 3 Nov 2023, 08:20 | 565 | 565 µS/cm |
| 3 Oct 2023, 08:37 | 1088 | 1088 µS/cm |
Everything measured here
12 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 12 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 23 | Oct 2023 – Mar 2026 | 96.8% 20 Mar 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 23 | Oct 2023 – Mar 2026 | 11.3 mg/l 20 Mar 2026 |
| Temperature of Water 0076 | River water | 23 | Oct 2023 – Mar 2026 | 8.4 °C 20 Mar 2026 |
| pH 0061 | River water | 23 | Oct 2023 – Mar 2026 | 7.92 20 Mar 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 21 | Oct 2023 – Mar 2026 | below 0.03 mg/l 20 Mar 2026 |
| Nitrate as N 0117 | River water | 20 | Oct 2023 – Mar 2026 | 4.19 mg/l 20 Mar 2026 |
| Orthophosphate, reactive as P 0180 | River water | 22 | Oct 2023 – Mar 2026 | 0.019 mg/l 20 Mar 2026 |
| Conductivity at 25 C 0077 | River water | 23 | Oct 2023 – Mar 2026 | 999 µS/cm 20 Mar 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 22 | Oct 2023 – Mar 2026 | 290 mg/l 20 Mar 2026 |
| Ammonia un-ionised as N 0119 | River water | 21 | Oct 2023 – Mar 2026 | below 0.00041 mg/l 20 Mar 2026 |
| Nitrite as N 0118 | River water | 21 | Oct 2023 – Mar 2026 | 0.01 mg/l 20 Mar 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 21 | Oct 2023 – Mar 2026 | 4.2 mg/l 20 Mar 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.