River Onny at Newton
EA name: R.ONNY AT NEWTON (also listed as “RIVER ONNY AT NEWTON”)
Environment Agency sampling point MD-19234150 · 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
- 27 Mar 2025, 10:4718 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
- 32 since 6 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 334600, 290800As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Onny
- River, by the map
- Not placedGrid reference only to 100 m and no line carries the name it gives, so position alone cannot choose. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (23 samples)
Environmental monitoring statutory (EU directives) (9 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
114.1%
Sampled 27 Mar 2025, 18 months ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 Mar 2025, 10:46 | 114.1 | 114.1% |
| 28 Feb 2025, 10:21 | 100.8 | 100.8% |
| 3 Jan 2025, 11:11 | 100.7 | 100.7% |
| 18 Dec 2024, 09:55 | 99.7 | 99.7% |
| 21 Nov 2024, 10:37 | 99.1 | 99.1% |
| 1 Nov 2024, 09:20 | 96.1 | 96.1% |
| 2 Aug 2024, 09:01 | 95.9 | 95.9% |
| 12 Jul 2024, 09:09 | 97.9 | 97.9% |
| 7 Jun 2024, 09:52 | 102 | 102% |
Dissolved oxygen
as O2 · code 9924 · mg/l
12.6 mg/l
Sampled 27 Mar 2025, 18 months ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 Mar 2025, 10:46 | 12.6 | 12.6 mg/l |
| 28 Feb 2025, 10:21 | 13.4 | 13.4 mg/l |
| 3 Jan 2025, 11:11 | 13.6 | 13.6 mg/l |
| 18 Dec 2024, 09:55 | 11.4 | 11.4 mg/l |
| 21 Nov 2024, 10:37 | 13.8 | 13.8 mg/l |
| 1 Nov 2024, 09:20 | 10.8 | 10.8 mg/l |
| 2 Aug 2024, 09:01 | 9.21 | 9.21 mg/l |
| 12 Jul 2024, 09:09 | 10.3 | 10.3 mg/l |
| 7 Jun 2024, 09:52 | 11 | 11 mg/l |
Water temperature
code 0076 · °C
10.9 °C
Sampled 27 Mar 2025, 18 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 Mar 2025, 10:47 | 10.9 | 10.9 °C |
| 27 Mar 2025, 10:46 | 11 | 11 °C |
| 28 Feb 2025, 10:22 | 3.4 | 3.4 °C |
| 28 Feb 2025, 10:21 | 3.4 | 3.4 °C |
| 3 Jan 2025, 11:11 | 2.9 | 2.9 °C |
| 18 Dec 2024, 09:57 | 9.4 | 9.4 °C |
| 18 Dec 2024, 09:55 | 9.4 | 9.4 °C |
| 21 Nov 2024, 10:38 | 1.8 | 1.8 °C |
| 21 Nov 2024, 10:37 | 1.8 | 1.8 °C |
| 1 Nov 2024, 09:22 | 10.2 | 10.2 °C |
| 1 Nov 2024, 09:20 | 10.2 | 10.2 °C |
| 24 Sep 2024, 10:35 | 12.3 | 12.3 °C |
| 22 Aug 2024, 09:59 | 14.9 | 14.9 °C |
| 2 Aug 2024, 09:01 | 17.2 | 17.2 °C |
| 25 Jul 2024, 10:06 | 16.4 | 16.4 °C |
| 12 Jul 2024, 09:09 | 13.1 | 13.1 °C |
| 27 Jun 2024, 09:52 | 17.2 | 17.2 °C |
| 7 Jun 2024, 09:52 | 11.7 | 11.7 °C |
| 23 May 2024, 14:38 | 11.7 | 11.7 °C |
| 25 Apr 2024, 11:39 | 7.8 | 7.8 °C |
pH
code 0061
8.2
Sampled 27 Mar 2025, 18 months ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 Mar 2025, 10:47 | 8.2 | 8.2 |
| 27 Mar 2025, 10:46 | 7.9 | 7.9 |
| 28 Feb 2025, 10:22 | 7.9 | 7.9 |
| 28 Feb 2025, 10:21 | 8.19 | 8.19 |
| 3 Jan 2025, 11:11 | 7.75 | 7.75 |
| 18 Dec 2024, 09:57 | 7.5 | 7.5 |
| 18 Dec 2024, 09:55 | 7.76 | 7.76 |
| 21 Nov 2024, 10:38 | 7.7 | 7.7 |
| 21 Nov 2024, 10:37 | 7.39 | 7.39 |
| 1 Nov 2024, 09:22 | 7.6 | 7.6 |
| 1 Nov 2024, 09:20 | 7.9 | 7.9 |
| 24 Sep 2024, 10:35 | 7.7 | 7.7 |
| 22 Aug 2024, 09:59 | 7.8 | 7.8 |
| 2 Aug 2024, 09:01 | 8.12 | 8.12 |
| 25 Jul 2024, 10:06 | 7.8 | 7.8 |
| 12 Jul 2024, 09:09 | 8.12 | 8.12 |
| 27 Jun 2024, 09:52 | 7.9 | 7.9 |
| 7 Jun 2024, 09:52 | 7.87 | 7.87 |
| 23 May 2024, 14:38 | 7.7 | 7.7 |
| 25 Apr 2024, 11:39 | 8 | 8 |
| 14 Mar 2024, 09:27 | 7.62 | 7.62 |
| 13 Mar 2024, 13:54 | 7.74 | 7.74 |
| 27 Feb 2024, 12:23 | 7.6 | 7.6 |
| 13 Feb 2024, 10:47 | 7.46 | 7.46 |
| 23 Jan 2024, 08:18 | 7.55 | 7.55 |
| 16 Jan 2024, 12:55 | 7.62 | 7.62 |
| 18 Dec 2023, 12:26 | 6.84 | 6.84 |
| 1 Dec 2023, 10:16 | 7.52 | 7.52 |
| 20 Nov 2023, 12:02 | 7.43 | 7.43 |
| 6 Nov 2023, 10:20 | 7.3 | 7.3 |
| 23 Oct 2023, 11:07 | 7.65 | 7.65 |
| 6 Oct 2023, 12:15 | 7.87 | 7.87 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 27 Mar 2025, 18 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 Mar 2025, 10:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 Mar 2025, 10:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Feb 2025, 10:22 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Feb 2025, 10:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Jan 2025, 11:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Dec 2024, 09:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Dec 2024, 09:55 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Nov 2024, 10:38 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Nov 2024, 10:37 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Nov 2024, 09:22 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Nov 2024, 09:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Sep 2024, 10:35 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Aug 2024, 09:59 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Aug 2024, 09:01 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Jul 2024, 10:06 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Jul 2024, 09:09 | 0.035 | 0.035 mg/l |
| 27 Jun 2024, 09:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Jun 2024, 09:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 May 2024, 14:38 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Apr 2024, 11:39 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.955 mg/l
Sampled 27 Mar 2025, 18 months ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 Mar 2025, 10:46 | 0.955 | 0.955 mg/l |
| 28 Feb 2025, 10:21 | 1.8 | 1.8 mg/l |
| 3 Jan 2025, 11:11 | 1.5 | 1.5 mg/l |
| 18 Dec 2024, 09:55 | 1.5 | 1.5 mg/l |
| 21 Nov 2024, 10:37 | 0.996 | 0.996 mg/l |
| 1 Nov 2024, 09:20 | 1.2 | 1.2 mg/l |
| 2 Aug 2024, 09:01 | 0.646 | 0.646 mg/l |
| 12 Jul 2024, 09:09 | 1.1 | 1.1 mg/l |
| 7 Jun 2024, 09:52 | 1.2 | 1.2 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.098 mg/l
Sampled 27 Mar 2025, 18 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 Mar 2025, 10:47 | 0.098 | 0.098 mg/l |
| 27 Mar 2025, 10:46 | <0.01 | below 0.01 mg/l (not detected above this) |
| 28 Feb 2025, 10:22 | <0.01 | below 0.01 mg/l (not detected above this) |
| 28 Feb 2025, 10:21 | 0.011 | 0.011 mg/l |
| 3 Jan 2025, 11:11 | 0.054 | 0.054 mg/l |
| 18 Dec 2024, 09:57 | 0.02 | 0.02 mg/l |
| 18 Dec 2024, 09:55 | 0.013 | 0.013 mg/l |
| 21 Nov 2024, 10:38 | 0.023 | 0.023 mg/l |
| 21 Nov 2024, 10:37 | 0.024 | 0.024 mg/l |
| 1 Nov 2024, 09:22 | 0.026 | 0.026 mg/l |
| 1 Nov 2024, 09:20 | 0.015 | 0.015 mg/l |
| 24 Sep 2024, 10:35 | 0.034 | 0.034 mg/l |
| 22 Aug 2024, 09:59 | 0.058 | 0.058 mg/l |
| 2 Aug 2024, 09:01 | 0.016 | 0.016 mg/l |
| 25 Jul 2024, 10:06 | 0.11 | 0.11 mg/l |
| 12 Jul 2024, 09:09 | 0.072 | 0.072 mg/l |
| 27 Jun 2024, 09:52 | 0.015 | 0.015 mg/l |
| 7 Jun 2024, 09:52 | 0.023 | 0.023 mg/l |
| 23 May 2024, 14:38 | 0.052 | 0.052 mg/l |
| 25 Apr 2024, 11:39 | <0.01 | below 0.01 mg/l (not detected above this) |
Conductivity
at 25 °C · code 0077 · µS/cm
184 µS/cm
Sampled 27 Mar 2025, 18 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 Mar 2025, 10:47 | 184 | 184 µS/cm |
| 27 Mar 2025, 10:46 | 188 | 188 µS/cm |
| 28 Feb 2025, 10:22 | 164 | 164 µS/cm |
| 28 Feb 2025, 10:21 | 167 | 167 µS/cm |
| 3 Jan 2025, 11:11 | 151 | 151 µS/cm |
| 18 Dec 2024, 09:57 | 144 | 144 µS/cm |
| 18 Dec 2024, 09:55 | 144 | 144 µS/cm |
| 21 Nov 2024, 10:38 | 212 | 212 µS/cm |
| 21 Nov 2024, 10:37 | 212 | 212 µS/cm |
| 1 Nov 2024, 09:22 | 182 | 182 µS/cm |
| 1 Nov 2024, 09:20 | 182 | 182 µS/cm |
| 24 Sep 2024, 10:35 | 160 | 160 µS/cm |
| 22 Aug 2024, 09:59 | 218 | 218 µS/cm |
| 2 Aug 2024, 09:01 | 199 | 199 µS/cm |
| 25 Jul 2024, 10:06 | 195 | 195 µS/cm |
| 12 Jul 2024, 09:09 | 133 | 133 µS/cm |
| 27 Jun 2024, 09:52 | 180 | 180 µS/cm |
| 7 Jun 2024, 09:52 | 159 | 159 µS/cm |
| 23 May 2024, 14:38 | 126 | 126 µS/cm |
| 25 Apr 2024, 11:39 | 162 | 162 µS/cm |
Everything measured here
58 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 58 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 9 | Jun 2024 – Mar 2025 | 114.1% 27 Mar 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 9 | Jun 2024 – Mar 2025 | 12.6 mg/l 27 Mar 2025 |
| Temperature of Water 0076 | River water | 20 | Apr 2024 – Mar 2025 | 10.9 °C 27 Mar 2025 |
| pH 0061 | River water | 32 | Oct 2023 – Mar 2025 | 8.2 27 Mar 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 20 | Apr 2024 – Mar 2025 | below 0.03 mg/l 27 Mar 2025 |
| Nitrate as N 0117 | River water | 9 | Jun 2024 – Mar 2025 | 0.955 mg/l 27 Mar 2025 |
| Orthophosphate, reactive as P 0180 | River water | 20 | Apr 2024 – Mar 2025 | 0.098 mg/l 27 Mar 2025 |
| Conductivity at 25 C 0077 | River water | 20 | Apr 2024 – Mar 2025 | 184 µS/cm 27 Mar 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 20 | Apr 2024 – Mar 2025 | 49 mg/l 27 Mar 2025 |
| Aluminium, Dissolved 6037 | River water | 12 | Oct 2023 – Mar 2024 | 52 µg/l 14 Mar 2024 |
| Ammonia un-ionised as N 0119 | River water | 9 | Jun 2024 – Mar 2025 | below 0.00047 mg/l 27 Mar 2025 |
| Barium 6062 | River water | 11 | Apr 2024 – Mar 2025 | 89 µg/l 27 Mar 2025 |
| Barium, Dissolved 9446 | River water | 11 | Apr 2024 – Mar 2025 | 81 µg/l 27 Mar 2025 |
| Boron 6059 | River water | 11 | Apr 2024 – Mar 2025 | below 100 µg/l 27 Mar 2025 |
| Boron, Dissolved 9447 | River water | 11 | Apr 2024 – Mar 2025 | below 100 µg/l 27 Mar 2025 |
| Cadmium 0108 | River water | 11 | Apr 2024 – Mar 2025 | 0.5 µg/l 27 Mar 2025 |
| Cadmium, Dissolved 0106 | River water | 23 | Oct 2023 – Mar 2025 | 0.32 µg/l 27 Mar 2025 |
| Calcium 0241 | River water | 11 | Apr 2024 – Mar 2025 | 17 mg/l 27 Mar 2025 |
| Calcium, Dissolved 0239 | River water | 23 | Oct 2023 – Mar 2025 | 16 mg/l 27 Mar 2025 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 23 | Oct 2023 – Mar 2025 | 3.1 mg/l 27 Mar 2025 |
| Chloride 0172 | River water | 11 | Apr 2024 – Mar 2025 | 15 mg/l 27 Mar 2025 |
| Chromium 3164 | River water | 11 | Apr 2024 – Mar 2025 | below 0.5 µg/l 27 Mar 2025 |
| Chromium, Dissolved 3409 | River water | 23 | Oct 2023 – Mar 2025 | below 0.5 µg/l 27 Mar 2025 |
| Copper 6452 | River water | 11 | Apr 2024 – Mar 2025 | 1.7 µg/l 27 Mar 2025 |
| Copper : BLM Bioavailable 4821 | River water | 11 | Apr 2024 – Mar 2025 | 0.19 µg/l 27 Mar 2025 |
| Copper, Dissolved 6450 | River water | 23 | Oct 2023 – Mar 2025 | 1.4 µg/l 27 Mar 2025 |
| Hardness, Total as CaCO3 0158 | River water | 23 | Oct 2023 – Mar 2025 | 58.9 mg/l 27 Mar 2025 |
| Ionic Balance 7044 | River water | 11 | Apr 2024 – Mar 2025 | 1.13% 27 Mar 2025 |
| Iron 6051 | River water | 11 | Apr 2024 – Mar 2025 | 400 µg/l 27 Mar 2025 |
| Iron, Dissolved 6460 | River water | 11 | Apr 2024 – Mar 2025 | 89 µg/l 27 Mar 2025 |
| Lead 0050 | River water | 11 | Apr 2024 – Mar 2025 | 14 µg/l 27 Mar 2025 |
| Lead : BLM Bioavailable 3377 | River water | 11 | Apr 2024 – Mar 2025 | 0.87 µg/l 27 Mar 2025 |
| Lead, Dissolved 0052 | River water | 23 | Oct 2023 – Mar 2025 | 2.7 µg/l 27 Mar 2025 |
| Lithium 6064 | River water | 11 | Apr 2024 – Mar 2025 | below 100 µg/l 27 Mar 2025 |
| Lithium, Dissolved 4201 | River water | 11 | Apr 2024 – Mar 2025 | below 100 µg/l 27 Mar 2025 |
| Magnesium 0237 | River water | 11 | Apr 2024 – Mar 2025 | 4.7 mg/l 27 Mar 2025 |
| Magnesium, Dissolved 0235 | River water | 23 | Oct 2023 – Mar 2025 | 4.6 mg/l 27 Mar 2025 |
| Manganese 6050 | River water | 11 | Apr 2024 – Mar 2025 | 28 µg/l 27 Mar 2025 |
| Manganese : BLM Bioavailable 4820 | River water | 11 | Apr 2024 – Mar 2025 | 14 µg/l 27 Mar 2025 |
| Manganese, Dissolved 6458 | River water | 11 | Apr 2024 – Mar 2025 | 14 µg/l 27 Mar 2025 |
| Nickel 6462 | River water | 11 | Apr 2024 – Mar 2025 | 1.4 µg/l 27 Mar 2025 |
| Nickel : BLM Bioavailable 3878 | River water | 11 | Apr 2024 – Mar 2025 | 0.91 µg/l 27 Mar 2025 |
| Nickel, Dissolved 3410 | River water | 23 | Oct 2023 – Mar 2025 | 1.1 µg/l 27 Mar 2025 |
| Nitrite as N 0118 | River water | 20 | Apr 2024 – Mar 2025 | below 0.004 mg/l 27 Mar 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 20 | Apr 2024 – Mar 2025 | 0.96 mg/l 27 Mar 2025 |
| Potassium 0211 | River water | 11 | Apr 2024 – Mar 2025 | 1.8 mg/l 27 Mar 2025 |
| Potassium, Dissolved 0209 | River water | 11 | Apr 2024 – Mar 2025 | 1.8 mg/l 27 Mar 2025 |
| Silica, reactive as SiO2 0182 | River water | 11 | Apr 2024 – Mar 2025 | 7.2 mg/l 27 Mar 2025 |
| Sodium 0207 | River water | 11 | Apr 2024 – Mar 2025 | 12 mg/l 27 Mar 2025 |
| Sodium, Dissolved 0205 | River water | 11 | Apr 2024 – Mar 2025 | 11 mg/l 27 Mar 2025 |
| Solids, Suspended at 105 C 0135 | River water | 11 | Apr 2024 – Mar 2025 | 6.5 mg/l 27 Mar 2025 |
| Strontium 6063 | River water | 11 | Apr 2024 – Mar 2025 | 53 µg/l 27 Mar 2025 |
| Strontium, Filtered 6693 | River water | 11 | Apr 2024 – Mar 2025 | 51 µg/l 27 Mar 2025 |
| Sulphate as SO4 0183 | River water | 11 | Apr 2024 – Mar 2025 | 14 mg/l 27 Mar 2025 |
| Sulphate, Dissolved as SO4 7859 | River water | 11 | Apr 2024 – Mar 2025 | 14 mg/l 27 Mar 2025 |
| Zinc 6455 | River water | 11 | Apr 2024 – Mar 2025 | 44 µg/l 27 Mar 2025 |
| Zinc : BLM Bioavailable 4822 | River water | 11 | Apr 2024 – Mar 2025 | 14 µg/l 27 Mar 2025 |
| Zinc, Dissolved 3408 | River water | 23 | Oct 2023 – Mar 2025 | 25 µg/l 27 Mar 2025 |
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.