River Rothay at Rothay Bridge
EA name: RIVER ROTHAY AT ROTHAY BRIDGE
Environment Agency sampling point NW-88004519 · 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
- 26 May 2026, 12:454 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
- 24 since 19 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 337227, 503945As published, to the nearest 1 m. Open in a map
- River, by its own name
- Rothay
- River, by the map
- River RothayPlaced on the river its name gives, 7 m from the line.
- Next gauge downstream
- Newby Bridge On the River Leven · 20 km along the river
- Nearest gauge upstream
- Miller Bridge House On the River Rothay · 0.4 km along the river
- Why it was sampled
- Monitoring (national agency policy) (24 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
101.5%
Sampled 17 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Dec 2025, 11:55 | 101.5 | 101.5% |
| 3 Dec 2025, 10:55 | 97.5 | 97.5% |
| 20 Nov 2025, 11:56 | 101.5 | 101.5% |
| 5 Nov 2025, 10:31 | 96.6 | 96.6% |
| 4 Mar 2025, 11:27 | 103.8 | 103.8% |
| 13 Feb 2025, 13:49 | 103.1 | 103.1% |
| 30 Jan 2025, 12:45 | 102.2 | 102.2% |
| 4 Dec 2024, 10:06 | 94.8 | 94.8% |
| 21 Nov 2024, 13:08 | 101.4 | 101.4% |
| 18 Oct 2024, 10:47 | 98 | 98% |
| 27 Sep 2024, 12:18 | 102.5 | 102.5% |
| 16 Aug 2024, 11:10 | 99 | 99% |
| 16 Jul 2024, 14:26 | 101.5 | 101.5% |
| 21 Jun 2024, 07:59 | 97.9 | 97.9% |
| 13 May 2024, 11:11 | 104.7 | 104.7% |
| 15 Apr 2024, 11:06 | 105.3 | 105.3% |
| 18 Mar 2024, 12:54 | 102.3 | 102.3% |
| 23 Feb 2024, 11:25 | 101.6 | 101.6% |
| 22 Jan 2024, 10:38 | 96 | 96% |
| 11 Dec 2023, 10:54 | 94.4 | 94.4% |
| 28 Nov 2023, 10:28 | 101.1 | 101.1% |
| 19 Oct 2023, 09:53 | 98.2 | 98.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
12.2 mg/l
Sampled 17 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Dec 2025, 11:55 | 12.2 | 12.2 mg/l |
| 3 Dec 2025, 10:55 | 11.9 | 11.9 mg/l |
| 20 Nov 2025, 11:56 | 13 | 13 mg/l |
| 5 Nov 2025, 10:31 | 10.5 | 10.5 mg/l |
| 4 Mar 2025, 11:27 | 12.6 | 12.6 mg/l |
| 13 Feb 2025, 13:49 | 13.4 | 13.4 mg/l |
| 30 Jan 2025, 12:45 | 13.4 | 13.4 mg/l |
| 4 Dec 2024, 10:06 | 11.6 | 11.6 mg/l |
| 21 Nov 2024, 13:08 | 13.5 | 13.5 mg/l |
| 18 Oct 2024, 10:47 | 10.8 | 10.8 mg/l |
| 27 Sep 2024, 12:18 | 11.3 | 11.3 mg/l |
| 16 Aug 2024, 11:10 | 9.75 | 9.75 mg/l |
| 16 Jul 2024, 14:26 | 9.68 | 9.68 mg/l |
| 21 Jun 2024, 07:59 | 9.98 | 9.98 mg/l |
| 13 May 2024, 11:11 | 10.4 | 10.4 mg/l |
| 15 Apr 2024, 11:06 | 12.5 | 12.5 mg/l |
| 18 Mar 2024, 12:54 | 12 | 12 mg/l |
| 23 Feb 2024, 11:25 | 12.3 | 12.3 mg/l |
| 22 Jan 2024, 10:38 | 12.2 | 12.2 mg/l |
| 11 Dec 2023, 10:54 | 11.5 | 11.5 mg/l |
| 28 Nov 2023, 10:28 | 12.6 | 12.6 mg/l |
| 19 Oct 2023, 09:53 | 10.9 | 10.9 mg/l |
Water temperature
code 0076 · °C
7.5 °C
Sampled 17 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Dec 2025, 11:55 | 7.5 | 7.5 °C |
| 3 Dec 2025, 10:55 | 6.8 | 6.8 °C |
| 20 Nov 2025, 11:56 | 4.8 | 4.8 °C |
| 5 Nov 2025, 10:31 | 11.5 | 11.5 °C |
| 4 Mar 2025, 11:27 | 7.1 | 7.1 °C |
| 13 Feb 2025, 13:49 | 4.4 | 4.4 °C |
| 30 Jan 2025, 12:45 | 3.9 | 3.9 °C |
| 4 Dec 2024, 10:06 | 6.6 | 6.6 °C |
| 21 Nov 2024, 13:08 | 3.5 | 3.5 °C |
| 18 Oct 2024, 10:47 | 11 | 11 °C |
| 27 Sep 2024, 12:18 | 11 | 11 °C |
| 16 Aug 2024, 11:10 | 16 | 16 °C |
| 16 Jul 2024, 14:26 | 17.5 | 17.5 °C |
| 21 Jun 2024, 07:59 | 14.4 | 14.4 °C |
| 13 May 2024, 11:11 | 15.8 | 15.8 °C |
| 15 Apr 2024, 11:06 | 7.9 | 7.9 °C |
| 18 Mar 2024, 12:54 | 8.4 | 8.4 °C |
| 23 Feb 2024, 11:25 | 7 | 7 °C |
| 22 Jan 2024, 10:38 | 5 | 5 °C |
| 11 Dec 2023, 10:54 | 6.9 | 6.9 °C |
| 28 Nov 2023, 10:28 | 6 | 6 °C |
| 19 Oct 2023, 09:53 | 10.8 | 10.8 °C |
pH
code 0061
7.94
Sampled 17 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Dec 2025, 11:55 | 7.94 | 7.94 |
| 3 Dec 2025, 10:55 | 7.12 | 7.12 |
| 20 Nov 2025, 11:56 | 7.37 | 7.37 |
| 5 Nov 2025, 10:31 | 6.8 | 6.8 |
| 4 Mar 2025, 11:27 | 7.45 | 7.45 |
| 13 Feb 2025, 13:49 | 7.51 | 7.51 |
| 30 Jan 2025, 12:45 | 7.22 | 7.22 |
| 4 Dec 2024, 10:06 | 7.64 | 7.64 |
| 21 Nov 2024, 13:08 | 7.05 | 7.05 |
| 18 Oct 2024, 10:47 | 7.84 | 7.84 |
| 27 Sep 2024, 12:18 | 7.35 | 7.35 |
| 16 Aug 2024, 11:10 | 6.96 | 6.96 |
| 16 Jul 2024, 14:26 | 7.43 | 7.43 |
| 21 Jun 2024, 07:59 | 7.67 | 7.67 |
| 13 May 2024, 11:11 | 7.27 | 7.27 |
| 15 Apr 2024, 11:06 | 7.4 | 7.4 |
| 18 Mar 2024, 12:54 | 7.1 | 7.1 |
| 23 Feb 2024, 11:25 | 7.36 | 7.36 |
| 22 Jan 2024, 10:38 | 7.56 | 7.56 |
| 11 Dec 2023, 10:54 | 7.36 | 7.36 |
| 28 Nov 2023, 10:28 | 8.33 | 8.33 |
| 19 Oct 2023, 09:53 | 7.38 | 7.38 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.021 mg/l
Sampled 17 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Dec 2025, 11:55 | 0.021 | 0.021 mg/l |
| 3 Dec 2025, 10:55 | 0.0052 | 0.0052 mg/l |
| 20 Nov 2025, 11:56 | 0.0066 | 0.0066 mg/l |
| 5 Nov 2025, 10:31 | 0.0094 | 0.0094 mg/l |
| 4 Mar 2025, 11:27 | <0.002 | below 0.002 mg/l (not detected above this) |
| 13 Feb 2025, 13:49 | 0.0035 | 0.0035 mg/l |
| 30 Jan 2025, 12:45 | 0.013 | 0.013 mg/l |
| 4 Dec 2024, 10:06 | 0.011 | 0.011 mg/l |
| 21 Nov 2024, 13:08 | 0.004 | 0.004 mg/l |
| 18 Oct 2024, 10:47 | 0.011 | 0.011 mg/l |
| 27 Sep 2024, 12:18 | 0.0035 | 0.0035 mg/l |
| 16 Aug 2024, 11:10 | 0.0048 | 0.0048 mg/l |
| 16 Jul 2024, 14:26 | 0.0059 | 0.0059 mg/l |
| 21 Jun 2024, 07:59 | 0.008 | 0.008 mg/l |
| 13 May 2024, 11:11 | 0.0079 | 0.0079 mg/l |
| 15 Apr 2024, 11:06 | 0.0033 | 0.0033 mg/l |
| 18 Mar 2024, 12:54 | <0.002 | below 0.002 mg/l (not detected above this) |
| 23 Feb 2024, 11:25 | 0.0032 | 0.0032 mg/l |
| 22 Jan 2024, 10:38 | 0.01 | 0.01 mg/l |
| 11 Dec 2023, 10:54 | 0.012 | 0.012 mg/l |
| 28 Nov 2023, 10:28 | 0.0055 | 0.0055 mg/l |
| 19 Oct 2023, 09:53 | <0.002 | below 0.002 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.319 mg/l
Sampled 17 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Dec 2025, 11:55 | 0.319 | 0.319 mg/l |
| 3 Dec 2025, 10:55 | 0.369 | 0.369 mg/l |
| 20 Nov 2025, 11:56 | 0.309 | 0.309 mg/l |
| 5 Nov 2025, 10:31 | 0.276 | 0.276 mg/l |
| 4 Mar 2025, 11:27 | 0.509 | 0.509 mg/l |
| 13 Feb 2025, 13:49 | 0.539 | 0.539 mg/l |
| 30 Jan 2025, 12:45 | 0.559 | 0.559 mg/l |
| 4 Dec 2024, 10:06 | 0.478 | 0.478 mg/l |
| 21 Nov 2024, 13:08 | 0.348 | 0.348 mg/l |
| 18 Oct 2024, 10:47 | 0.308 | 0.308 mg/l |
| 27 Sep 2024, 12:18 | 0.149 | 0.149 mg/l |
| 16 Aug 2024, 11:10 | 0.149 | 0.149 mg/l |
| 16 Jul 2024, 14:26 | 0.128 | 0.128 mg/l |
| 21 Jun 2024, 07:59 | 0.178 | 0.178 mg/l |
| 13 May 2024, 11:11 | 0.209 | 0.209 mg/l |
| 15 Apr 2024, 11:06 | 0.229 | 0.229 mg/l |
| 18 Mar 2024, 12:54 | 0.299 | 0.299 mg/l |
| 23 Feb 2024, 11:25 | 0.419 | 0.419 mg/l |
| 22 Jan 2024, 10:38 | 0.509 | 0.509 mg/l |
| 11 Dec 2023, 10:54 | 0.489 | 0.489 mg/l |
| 28 Nov 2023, 10:28 | 0.419 | 0.419 mg/l |
| 19 Oct 2023, 09:53 | 0.249 | 0.249 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.0066 mg/l
Sampled 17 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Dec 2025, 11:55 | 0.0066 | 0.0066 mg/l |
| 3 Dec 2025, 10:55 | 0.0026 | 0.0026 mg/l |
| 20 Nov 2025, 11:56 | 0.0032 | 0.0032 mg/l |
| 5 Nov 2025, 10:31 | 0.0074 | 0.0074 mg/l |
| 4 Mar 2025, 11:27 | 0.0016 | 0.0016 mg/l |
| 13 Feb 2025, 13:49 | 0.0035 | 0.0035 mg/l |
| 30 Jan 2025, 12:45 | 0.0034 | 0.0034 mg/l |
| 4 Dec 2024, 10:06 | 0.0029 | 0.0029 mg/l |
| 21 Nov 2024, 13:08 | 0.0048 | 0.0048 mg/l |
| 18 Oct 2024, 10:47 | 0.0019 | 0.0019 mg/l |
| 27 Sep 2024, 12:18 | <0.001 | below 0.001 mg/l (not detected above this) |
| 16 Aug 2024, 11:10 | <0.001 | below 0.001 mg/l (not detected above this) |
| 16 Jul 2024, 14:26 | 0.0046 | 0.0046 mg/l |
| 21 Jun 2024, 07:59 | 0.0031 | 0.0031 mg/l |
| 13 May 2024, 11:11 | 0.0043 | 0.0043 mg/l |
| 15 Apr 2024, 11:06 | 0.0015 | 0.0015 mg/l |
| 18 Mar 2024, 12:54 | 0.0012 | 0.0012 mg/l |
| 23 Feb 2024, 11:25 | 0.0026 | 0.0026 mg/l |
| 22 Jan 2024, 10:38 | 0.0046 | 0.0046 mg/l |
| 11 Dec 2023, 10:54 | 0.003 | 0.003 mg/l |
| 28 Nov 2023, 10:28 | 0.0029 | 0.0029 mg/l |
| 19 Oct 2023, 09:53 | 0.0041 | 0.0041 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
50 µS/cm
Sampled 17 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Dec 2025, 11:55 | 50 | 50 µS/cm |
| 3 Dec 2025, 10:55 | 46 | 46 µS/cm |
| 20 Nov 2025, 11:56 | 52 | 52 µS/cm |
| 5 Nov 2025, 10:31 | 60 | 60 µS/cm |
| 4 Mar 2025, 11:27 | 57 | 57 µS/cm |
| 13 Feb 2025, 13:49 | 60 | 60 µS/cm |
| 30 Jan 2025, 12:45 | 57 | 57 µS/cm |
| 4 Dec 2024, 10:06 | 55 | 55 µS/cm |
| 21 Nov 2024, 13:08 | 59 | 59 µS/cm |
| 18 Oct 2024, 10:47 | 52 | 52 µS/cm |
| 27 Sep 2024, 12:18 | 49 | 49 µS/cm |
| 16 Aug 2024, 11:10 | 43 | 43 µS/cm |
| 16 Jul 2024, 14:26 | 52 | 52 µS/cm |
| 21 Jun 2024, 07:59 | 56 | 56 µS/cm |
| 13 May 2024, 11:11 | 53 | 53 µS/cm |
| 15 Apr 2024, 11:06 | 45 | 45 µS/cm |
| 18 Mar 2024, 12:54 | 42 | 42 µS/cm |
| 23 Feb 2024, 11:25 | 48 | 48 µS/cm |
| 22 Jan 2024, 10:38 | 51 | 51 µS/cm |
| 11 Dec 2023, 10:54 | 496 | 496 µS/cm |
| 28 Nov 2023, 10:28 | 50 | 50 µS/cm |
| 19 Oct 2023, 09:53 | 55 | 55 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 | 22 | Oct 2023 – Dec 2025 | 101.5% 17 Dec 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 22 | Oct 2023 – Dec 2025 | 12.2 mg/l 17 Dec 2025 |
| Temperature of Water 0076 | River water | 22 | Oct 2023 – Dec 2025 | 7.5 °C 17 Dec 2025 |
| pH 0061 | River water | 22 | Oct 2023 – Dec 2025 | 7.94 17 Dec 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 22 | Oct 2023 – Dec 2025 | 0.021 mg/l 17 Dec 2025 |
| Nitrate as N 0117 | River water | 22 | Oct 2023 – Dec 2025 | 0.319 mg/l 17 Dec 2025 |
| Orthophosphate, reactive as P 0180 | River water | 22 | Oct 2023 – Dec 2025 | 0.0066 mg/l 17 Dec 2025 |
| Conductivity at 25 C 0077 | River water | 22 | Oct 2023 – Dec 2025 | 50 µS/cm 17 Dec 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 21 | Oct 2023 – Dec 2025 | 10 mg/l 17 Dec 2025 |
| Ammonia un-ionised as N 0119 | River water | 22 | Oct 2023 – Dec 2025 | 0.00028 mg/l 17 Dec 2025 |
| BOD : 5 Day ATU 0085 | River water | 17 | Feb 2024 – Dec 2025 | 1.3 mg/l 17 Dec 2025 |
| Nitrite as N 0118 | River water | 22 | Oct 2023 – Dec 2025 | below 0.001 mg/l 17 Dec 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 22 | Oct 2023 – Dec 2025 | 0.32 mg/l 17 Dec 2025 |
| Phosphorus, Total as P 0348 | River water | 17 | May 2024 – May 2026 | 0.013 mg/l 26 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.