River Perry at Halston Hall Entrance
EA name: R.PERRY AT HALSTON HALL ENTRANCE (also listed as “RIVER PERRY AT HALSTON HALL ENTRANCE”)
Environment Agency sampling point MD-29998810 · 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
- 10 Sep 2026, 10:4621 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 28 since 24 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 333550, 332020As published, to the nearest 10 m. Open in a map
- River, by its own name
- Perry
- River, by the map
- River PerryPlaced on the river its name gives, 8 m from the line.
- Next gauge downstream
- Yeaton On the River Perry · 23 km along the river (the path rests on a repair to the map)
- Why it was sampled
- Monitoring (national agency policy) (22 samples)
Environmental monitoring statutory (EU directives) (6 samples)
1 visit found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
88.1%
Sampled 10 Sep 2026, 21 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 10:46 | 88.1 | 88.1% |
| 21 Aug 2026, 11:43 | 86.8 | 86.8% |
| 14 Jul 2026, 11:29 | 91 | 91% |
| 9 Jun 2026, 09:59 | 87.1 | 87.1% |
| 8 May 2026, 11:53 | 94.4 | 94.4% |
| 13 Apr 2026, 10:51 | 90.9 | 90.9% |
| 12 Mar 2026, 11:30 | 90.6 | 90.6% |
| 13 Feb 2026, 09:48 | 89.8 | 89.8% |
| 7 Jan 2026, 11:10 | 92.5 | 92.5% |
| 4 Dec 2025, 11:30 | 82 | 82% |
| 14 Nov 2025, 11:05 | 73.5 | 73.5% |
| 27 Oct 2025, 09:34 | 79.7 | 79.7% |
| 29 Sep 2025, 13:20 | 89.1 | 89.1% |
| 1 Aug 2025, 13:27 | 95.6 | 95.6% |
| 1 Jul 2025, 10:58 | 85.8 | 85.8% |
| 13 Jun 2025, 11:59 | 86 | 86% |
| 1 May 2025, 09:47 | 90.3 | 90.3% |
| 3 Apr 2025, 12:15 | 96.6 | 96.6% |
| 14 Mar 2025, 11:50 | 91.3 | 91.3% |
| 20 Feb 2025, 10:44 | 93.3 | 93.3% |
| 29 Jan 2025, 12:09 | 90.4 | 90.4% |
| 11 Dec 2024, 11:06 | 88.3 | 88.3% |
| 18 Nov 2024, 09:59 | 81.5 | 81.5% |
| 18 Sep 2024, 10:13 | 86.7 | 86.7% |
| 22 Aug 2024, 14:53 | 87.6 | 87.6% |
| 16 Jul 2024, 14:08 | 75.2 | 75.2% |
| 24 Jun 2024, 13:56 | 90.6 | 90.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.52 mg/l
Sampled 10 Sep 2026, 21 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 10:46 | 9.52 | 9.52 mg/l |
| 21 Aug 2026, 11:43 | 9.12 | 9.12 mg/l |
| 14 Jul 2026, 11:29 | 9.35 | 9.35 mg/l |
| 9 Jun 2026, 09:59 | 9.47 | 9.47 mg/l |
| 8 May 2026, 11:53 | 10.5 | 10.5 mg/l |
| 13 Apr 2026, 10:51 | 10.7 | 10.7 mg/l |
| 12 Mar 2026, 11:30 | 10.4 | 10.4 mg/l |
| 13 Feb 2026, 09:48 | 11.1 | 11.1 mg/l |
| 7 Jan 2026, 11:10 | 11.9 | 11.9 mg/l |
| 4 Dec 2025, 11:30 | 9.74 | 9.74 mg/l |
| 14 Nov 2025, 11:05 | 8.26 | 8.26 mg/l |
| 27 Oct 2025, 09:34 | 9.15 | 9.15 mg/l |
| 29 Sep 2025, 13:20 | 9.97 | 9.97 mg/l |
| 1 Aug 2025, 13:27 | 9.83 | 9.83 mg/l |
| 1 Jul 2025, 10:58 | 8.74 | 8.74 mg/l |
| 13 Jun 2025, 11:59 | 8.88 | 8.88 mg/l |
| 1 May 2025, 09:47 | 9.96 | 9.96 mg/l |
| 3 Apr 2025, 12:15 | 11 | 11 mg/l |
| 14 Mar 2025, 11:50 | 11 | 11 mg/l |
| 20 Feb 2025, 10:44 | 10.7 | 10.7 mg/l |
| 29 Jan 2025, 12:09 | 11.1 | 11.1 mg/l |
| 11 Dec 2024, 11:06 | 10.7 | 10.7 mg/l |
| 18 Nov 2024, 09:59 | 9.54 | 9.54 mg/l |
| 18 Sep 2024, 10:13 | 9.54 | 9.54 mg/l |
| 22 Aug 2024, 14:53 | 8.99 | 8.99 mg/l |
| 16 Jul 2024, 14:08 | 7.65 | 7.65 mg/l |
| 24 Jun 2024, 13:56 | 9.25 | 9.25 mg/l |
Water temperature
code 0076 · °C
11.8 °C
Sampled 10 Sep 2026, 21 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 10:46 | 11.8 | 11.8 °C |
| 21 Aug 2026, 11:43 | 13 | 13 °C |
| 14 Jul 2026, 11:29 | 14 | 14 °C |
| 9 Jun 2026, 09:59 | 11.5 | 11.5 °C |
| 8 May 2026, 11:53 | 10.6 | 10.6 °C |
| 13 Apr 2026, 10:51 | 8.1 | 8.1 °C |
| 12 Mar 2026, 11:30 | 9.2 | 9.2 °C |
| 13 Feb 2026, 09:48 | 6.3 | 6.3 °C |
| 7 Jan 2026, 11:10 | 4.8 | 4.8 °C |
| 4 Dec 2025, 11:30 | 7.8 | 7.8 °C |
| 14 Nov 2025, 11:05 | 10.1 | 10.1 °C |
| 27 Oct 2025, 09:34 | 9.2 | 9.2 °C |
| 29 Sep 2025, 13:20 | 10.3 | 10.3 °C |
| 1 Aug 2025, 13:27 | 14 | 14 °C |
| 1 Jul 2025, 10:58 | 14.4 | 14.4 °C |
| 13 Jun 2025, 11:59 | 13.8 | 13.8 °C |
| 1 May 2025, 09:47 | 10.9 | 10.9 °C |
| 3 Apr 2025, 12:15 | 9.5 | 9.5 °C |
| 14 Mar 2025, 11:50 | 7.1 | 7.1 °C |
| 20 Feb 2025, 10:44 | 9.2 | 9.2 °C |
| 29 Jan 2025, 12:09 | 6.4 | 6.4 °C |
| 11 Dec 2024, 11:06 | 7.2 | 7.2 °C |
| 18 Nov 2024, 09:59 | 8.4 | 8.4 °C |
| 18 Sep 2024, 10:13 | 11 | 11 °C |
| 22 Aug 2024, 14:53 | 14.1 | 14.1 °C |
| 16 Jul 2024, 14:08 | 14.5 | 14.5 °C |
| 24 Jun 2024, 13:56 | 14.3 | 14.3 °C |
pH
code 0061
7.87
Sampled 10 Sep 2026, 21 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 10:46 | 7.87 | 7.87 |
| 21 Aug 2026, 11:43 | 7.83 | 7.83 |
| 14 Jul 2026, 11:29 | 7.96 | 7.96 |
| 9 Jun 2026, 09:59 | 7.88 | 7.88 |
| 8 May 2026, 11:53 | 7.96 | 7.96 |
| 13 Apr 2026, 10:51 | 7.94 | 7.94 |
| 12 Mar 2026, 11:30 | 7.85 | 7.85 |
| 13 Feb 2026, 09:48 | 7.64 | 7.64 |
| 7 Jan 2026, 11:10 | 7.98 | 7.98 |
| 4 Dec 2025, 11:30 | 7.5 | 7.5 |
| 14 Nov 2025, 11:05 | 7.46 | 7.46 |
| 27 Oct 2025, 09:34 | 7.61 | 7.61 |
| 29 Sep 2025, 13:20 | 8.1 | 8.1 |
| 1 Aug 2025, 13:27 | 7.96 | 7.96 |
| 1 Jul 2025, 10:58 | 7.72 | 7.72 |
| 13 Jun 2025, 11:59 | 7.93 | 7.93 |
| 1 May 2025, 09:47 | 7.97 | 7.97 |
| 3 Apr 2025, 12:15 | 7.9 | 7.9 |
| 14 Mar 2025, 11:50 | 7.95 | 7.95 |
| 20 Feb 2025, 10:44 | 7.85 | 7.85 |
| 29 Jan 2025, 12:09 | 7.65 | 7.65 |
| 11 Dec 2024, 11:06 | 7.74 | 7.74 |
| 18 Nov 2024, 09:59 | 7.74 | 7.74 |
| 18 Sep 2024, 10:13 | 7.8 | 7.8 |
| 22 Aug 2024, 14:53 | 7.86 | 7.86 |
| 16 Jul 2024, 14:08 | 7.58 | 7.58 |
| 24 Jun 2024, 13:56 | 7.84 | 7.84 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 10 Sep 2026, 21 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 10:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Aug 2026, 11:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Jul 2026, 11:29 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Jun 2026, 09:59 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 May 2026, 11:53 | 0.03 | 0.03 mg/l |
| 13 Apr 2026, 10:51 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Mar 2026, 11:30 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Feb 2026, 09:48 | 0.19 | 0.19 mg/l |
| 7 Jan 2026, 11:10 | 0.14 | 0.14 mg/l |
| 4 Dec 2025, 11:30 | 0.23 | 0.23 mg/l |
| 14 Nov 2025, 11:05 | 0.29 | 0.29 mg/l |
| 27 Oct 2025, 09:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 Sep 2025, 13:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Aug 2025, 13:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Jul 2025, 10:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Jun 2025, 11:59 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 May 2025, 09:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Apr 2025, 12:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Mar 2025, 11:50 | 0.043 | 0.043 mg/l |
| 20 Feb 2025, 10:44 | 0.044 | 0.044 mg/l |
| 29 Jan 2025, 12:09 | 0.091 | 0.091 mg/l |
| 11 Dec 2024, 11:06 | 0.079 | 0.079 mg/l |
| 18 Nov 2024, 09:59 | 0.047 | 0.047 mg/l |
| 18 Sep 2024, 10:13 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Aug 2024, 14:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Jul 2024, 14:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Jun 2024, 13:56 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
5.09 mg/l
Sampled 10 Sep 2026, 21 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 10:46 | 5.09 | 5.09 mg/l |
| 21 Aug 2026, 11:43 | 5.19 | 5.19 mg/l |
| 14 Jul 2026, 11:29 | 5.37 | 5.37 mg/l |
| 9 Jun 2026, 09:59 | 5.38 | 5.38 mg/l |
| 8 May 2026, 11:53 | 5.59 | 5.59 mg/l |
| 13 Apr 2026, 10:51 | 5.29 | 5.29 mg/l |
| 12 Mar 2026, 11:30 | 5.28 | 5.28 mg/l |
| 13 Feb 2026, 09:48 | 2.97 | 2.97 mg/l |
| 7 Jan 2026, 11:10 | 4.37 | 4.37 mg/l |
| 4 Dec 2025, 11:30 | 5.04 | 5.04 mg/l |
| 14 Nov 2025, 11:05 | 4.13 | 4.13 mg/l |
| 27 Oct 2025, 09:34 | 4.28 | 4.28 mg/l |
| 29 Sep 2025, 13:20 | 5.28 | 5.28 mg/l |
| 1 Aug 2025, 13:27 | 5.49 | 5.49 mg/l |
| 1 Jul 2025, 10:58 | 5.77 | 5.77 mg/l |
| 13 Jun 2025, 11:59 | 5.18 | 5.18 mg/l |
| 1 May 2025, 09:47 | 5.49 | 5.49 mg/l |
| 3 Apr 2025, 12:15 | 5.79 | 5.79 mg/l |
| 14 Mar 2025, 11:50 | 5.59 | 5.59 mg/l |
| 20 Feb 2025, 10:44 | 5.48 | 5.48 mg/l |
| 29 Jan 2025, 12:09 | 4.38 | 4.38 mg/l |
| 11 Dec 2024, 11:06 | 4.38 | 4.38 mg/l |
| 18 Nov 2024, 09:59 | 4.57 | 4.57 mg/l |
| 18 Sep 2024, 10:13 | 4.88 | 4.88 mg/l |
| 22 Aug 2024, 14:53 | 5.29 | 5.29 mg/l |
| 16 Jul 2024, 14:08 | 2.48 | 2.48 mg/l |
| 24 Jun 2024, 13:56 | 5.87 | 5.87 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.044 mg/l
Sampled 10 Sep 2026, 21 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 10:46 | 0.044 | 0.044 mg/l |
| 21 Aug 2026, 11:43 | 0.036 | 0.036 mg/l |
| 14 Jul 2026, 11:29 | 0.045 | 0.045 mg/l |
| 9 Jun 2026, 09:59 | 0.032 | 0.032 mg/l |
| 8 May 2026, 11:53 | 0.025 | 0.025 mg/l |
| 13 Apr 2026, 10:51 | 0.025 | 0.025 mg/l |
| 12 Mar 2026, 11:30 | 0.042 | 0.042 mg/l |
| 13 Feb 2026, 09:48 | 0.11 | 0.11 mg/l |
| 7 Jan 2026, 11:10 | 0.059 | 0.059 mg/l |
| 4 Dec 2025, 11:30 | 0.094 | 0.094 mg/l |
| 14 Nov 2025, 11:05 | 0.069 | 0.069 mg/l |
| 27 Oct 2025, 09:34 | 0.055 | 0.055 mg/l |
| 29 Sep 2025, 13:20 | 0.034 | 0.034 mg/l |
| 1 Aug 2025, 13:27 | 0.046 | 0.046 mg/l |
| 1 Jul 2025, 10:58 | 0.24 | 0.24 mg/l |
| 13 Jun 2025, 11:59 | 0.037 | 0.037 mg/l |
| 1 May 2025, 09:47 | 0.023 | 0.023 mg/l |
| 3 Apr 2025, 12:15 | 0.017 | 0.017 mg/l |
| 14 Mar 2025, 11:50 | 0.026 | 0.026 mg/l |
| 20 Feb 2025, 10:44 | 0.053 | 0.053 mg/l |
| 29 Jan 2025, 12:09 | 0.21 | 0.21 mg/l |
| 11 Dec 2024, 11:06 | 0.082 | 0.082 mg/l |
| 18 Nov 2024, 09:59 | 0.042 | 0.042 mg/l |
| 18 Sep 2024, 10:13 | 0.036 | 0.036 mg/l |
| 22 Aug 2024, 14:53 | 0.036 | 0.036 mg/l |
| 16 Jul 2024, 14:08 | 0.11 | 0.11 mg/l |
| 24 Jun 2024, 13:56 | 0.038 | 0.038 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
645 µS/cm
Sampled 10 Sep 2026, 21 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 10:46 | 645 | 645 µS/cm |
| 21 Aug 2026, 11:43 | 626 | 626 µS/cm |
| 14 Jul 2026, 11:29 | 630 | 630 µS/cm |
| 9 Jun 2026, 09:59 | 623 | 623 µS/cm |
| 8 May 2026, 11:53 | 626 | 626 µS/cm |
| 13 Apr 2026, 10:51 | 598 | 598 µS/cm |
| 12 Mar 2026, 11:30 | 563 | 563 µS/cm |
| 13 Feb 2026, 09:48 | 316 | 316 µS/cm |
| 7 Jan 2026, 11:10 | 547 | 547 µS/cm |
| 4 Dec 2025, 11:30 | 485 | 485 µS/cm |
| 14 Nov 2025, 11:05 | 473 | 473 µS/cm |
| 27 Oct 2025, 09:34 | 598 | 598 µS/cm |
| 29 Sep 2025, 13:20 | 661 | 661 µS/cm |
| 1 Aug 2025, 13:27 | 633 | 633 µS/cm |
| 1 Jul 2025, 10:58 | 638 | 638 µS/cm |
| 13 Jun 2025, 11:59 | 608 | 608 µS/cm |
| 1 May 2025, 09:47 | 633 | 633 µS/cm |
| 3 Apr 2025, 12:15 | 608 | 608 µS/cm |
| 14 Mar 2025, 11:50 | 590 | 590 µS/cm |
| 20 Feb 2025, 10:44 | 570 | 570 µS/cm |
| 29 Jan 2025, 12:09 | 478 | 478 µS/cm |
| 11 Dec 2024, 11:06 | 475 | 475 µS/cm |
| 18 Nov 2024, 09:59 | 579 | 579 µS/cm |
| 18 Sep 2024, 10:13 | 619 | 619 µS/cm |
| 22 Aug 2024, 14:53 | 647 | 647 µS/cm |
| 16 Jul 2024, 14:08 | 357 | 357 µS/cm |
| 24 Jun 2024, 13:56 | 631 | 631 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 – Sep 2026 | 88.1% 10 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 27 | Jun 2024 – Sep 2026 | 9.52 mg/l 10 Sep 2026 |
| Temperature of Water 0076 | River water | 27 | Jun 2024 – Sep 2026 | 11.8 °C 10 Sep 2026 |
| pH 0061 | River water | 27 | Jun 2024 – Sep 2026 | 7.87 10 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 27 | Jun 2024 – Sep 2026 | below 0.03 mg/l 10 Sep 2026 |
| Nitrate as N 0117 | River water | 27 | Jun 2024 – Sep 2026 | 5.09 mg/l 10 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 27 | Jun 2024 – Sep 2026 | 0.044 mg/l 10 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 27 | Jun 2024 – Sep 2026 | 645 µS/cm 10 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 27 | Jun 2024 – Sep 2026 | 260 mg/l 10 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 27 | Jun 2024 – Sep 2026 | below 0.00047 mg/l 10 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 21 | Jun 2024 – May 2026 | below 1 mg/l 8 May 2026 |
| Nitrite as N 0118 | River water | 27 | Jun 2024 – Sep 2026 | 0.013 mg/l 10 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 27 | Jun 2024 – Sep 2026 | 5.1 mg/l 10 Sep 2026 |
| No flow /No sample 7668 | River water | 1 | Nov 2024 – Nov 2024 | No flow/discharge at sampling point 26 Nov 2024 |
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.