Rothay N of Grasmere Village
EA name: ROTHAY N OF GRASMERE VILLAGE
Environment Agency sampling point NW-88022164 · 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
- 18 May 2026, 15:244 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
- 22 since 18 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 333800, 508100As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Rothay
- River, by the map
- River RothayPlaced on the river its name gives, 55 m from the line.
- Next gauge downstream
- Grasmere Broadgate Meadow On the River Rothay · 0.4 km along the river
- Why it was sampled
- Monitoring (national agency policy) (22 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
100.2%
Sampled 18 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 15:24 | 100.2 | 100.2% |
| 18 Mar 2026, 13:42 | 100.9 | 100.9% |
| 4 Feb 2026, 10:13 | 98 | 98% |
| 9 Jan 2026, 10:11 | 101.5 | 101.5% |
| 12 Mar 2025, 09:54 | 105.2 | 105.2% |
| 13 Feb 2025, 14:08 | 100.8 | 100.8% |
| 30 Jan 2025, 12:04 | 99.8 | 99.8% |
| 5 Dec 2024, 13:41 | 100.4 | 100.4% |
| 21 Nov 2024, 13:34 | 99.3 | 99.3% |
| 18 Oct 2024, 09:58 | 100 | 100% |
| 27 Sep 2024, 12:37 | 100.6 | 100.6% |
| 22 Aug 2024, 11:50 | 100.9 | 100.9% |
| 16 Jul 2024, 14:56 | 100.4 | 100.4% |
| 26 Jun 2024, 11:22 | 99.2 | 99.2% |
| 15 May 2024, 18:33 | 101.3 | 101.3% |
| 16 Apr 2024, 10:39 | 103.8 | 103.8% |
| 18 Mar 2024, 12:11 | 102.6 | 102.6% |
| 28 Feb 2024, 12:24 | 103 | 103% |
| 29 Jan 2024, 11:08 | 99.2 | 99.2% |
| 13 Dec 2023, 14:40 | 99.4 | 99.4% |
| 29 Nov 2023, 10:24 | 98.5 | 98.5% |
| 18 Oct 2023, 10:10 | 98.8 | 98.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.9 mg/l
Sampled 18 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 15:24 | 10.9 | 10.9 mg/l |
| 18 Mar 2026, 13:42 | 11.3 | 11.3 mg/l |
| 4 Feb 2026, 10:13 | 12.7 | 12.7 mg/l |
| 9 Jan 2026, 10:11 | 13.8 | 13.8 mg/l |
| 12 Mar 2025, 09:54 | 13.5 | 13.5 mg/l |
| 13 Feb 2025, 14:08 | 13.1 | 13.1 mg/l |
| 30 Jan 2025, 12:04 | 13.2 | 13.2 mg/l |
| 5 Dec 2024, 13:41 | 11.8 | 11.8 mg/l |
| 21 Nov 2024, 13:34 | 13.6 | 13.6 mg/l |
| 18 Oct 2024, 09:58 | 11.1 | 11.1 mg/l |
| 27 Sep 2024, 12:37 | 11.3 | 11.3 mg/l |
| 22 Aug 2024, 11:50 | 10.3 | 10.3 mg/l |
| 16 Jul 2024, 14:56 | 9.74 | 9.74 mg/l |
| 26 Jun 2024, 11:22 | 9.42 | 9.42 mg/l |
| 15 May 2024, 18:33 | 10.2 | 10.2 mg/l |
| 16 Apr 2024, 10:39 | 12.4 | 12.4 mg/l |
| 18 Mar 2024, 12:11 | 11.9 | 11.9 mg/l |
| 28 Feb 2024, 12:24 | 12.7 | 12.7 mg/l |
| 29 Jan 2024, 11:08 | 12.3 | 12.3 mg/l |
| 13 Dec 2023, 14:40 | 12.2 | 12.2 mg/l |
| 29 Nov 2023, 10:24 | 13.2 | 13.2 mg/l |
| 18 Oct 2023, 10:10 | 11.3 | 11.3 mg/l |
Water temperature
code 0076 · °C
11.6 °C
Sampled 18 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 15:24 | 11.6 | 11.6 °C |
| 18 Mar 2026, 13:42 | 10.1 | 10.1 °C |
| 4 Feb 2026, 10:13 | 4.4 | 4.4 °C |
| 9 Jan 2026, 10:11 | 2.7 | 2.7 °C |
| 12 Mar 2025, 09:54 | 4.8 | 4.8 °C |
| 13 Feb 2025, 14:08 | 4.4 | 4.4 °C |
| 30 Jan 2025, 12:04 | 3.7 | 3.7 °C |
| 5 Dec 2024, 13:41 | 8.1 | 8.1 °C |
| 21 Nov 2024, 13:34 | 2.3 | 2.3 °C |
| 18 Oct 2024, 09:58 | 10.6 | 10.6 °C |
| 27 Sep 2024, 12:37 | 10 | 10 °C |
| 22 Aug 2024, 11:50 | 14.2 | 14.2 °C |
| 16 Jul 2024, 14:56 | 16.7 | 16.7 °C |
| 26 Jun 2024, 11:22 | 17.7 | 17.7 °C |
| 15 May 2024, 18:33 | 14.9 | 14.9 °C |
| 16 Apr 2024, 10:39 | 7.5 | 7.5 °C |
| 18 Mar 2024, 12:11 | 8.9 | 8.9 °C |
| 28 Feb 2024, 12:24 | 6.4 | 6.4 °C |
| 29 Jan 2024, 11:08 | 6.1 | 6.1 °C |
| 13 Dec 2023, 14:40 | 6.5 | 6.5 °C |
| 29 Nov 2023, 10:24 | 3.2 | 3.2 °C |
| 18 Oct 2023, 10:10 | 9.5 | 9.5 °C |
pH
code 0061
7.94
Sampled 18 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 15:24 | 7.94 | 7.94 |
| 18 Mar 2026, 13:42 | 7.81 | 7.81 |
| 4 Feb 2026, 10:13 | 6.75 | 6.75 |
| 9 Jan 2026, 10:11 | 7.66 | 7.66 |
| 12 Mar 2025, 09:54 | 7.12 | 7.12 |
| 13 Feb 2025, 14:08 | 6.88 | 6.88 |
| 30 Jan 2025, 12:04 | 7.26 | 7.26 |
| 5 Dec 2024, 13:41 | 6.98 | 6.98 |
| 21 Nov 2024, 13:34 | 7.12 | 7.12 |
| 18 Oct 2024, 09:58 | 8 | 8 |
| 27 Sep 2024, 12:37 | 7.22 | 7.22 |
| 22 Aug 2024, 11:50 | 6.82 | 6.82 |
| 16 Jul 2024, 14:56 | 7.42 | 7.42 |
| 26 Jun 2024, 11:22 | 7.04 | 7.04 |
| 15 May 2024, 18:33 | 7.07 | 7.07 |
| 16 Apr 2024, 10:39 | 7.11 | 7.11 |
| 18 Mar 2024, 12:11 | 7.04 | 7.04 |
| 28 Feb 2024, 12:24 | 7.35 | 7.35 |
| 29 Jan 2024, 11:08 | 6.77 | 6.77 |
| 13 Dec 2023, 14:40 | 6.68 | 6.68 |
| 29 Nov 2023, 10:24 | 7.21 | 7.21 |
| 18 Oct 2023, 10:10 | 7.45 | 7.45 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.0026 mg/l
Sampled 18 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 15:24 | 0.0026 | 0.0026 mg/l |
| 18 Mar 2026, 13:42 | 0.0023 | 0.0023 mg/l |
| 4 Feb 2026, 10:13 | <0.002 | below 0.002 mg/l (not detected above this) |
| 9 Jan 2026, 10:11 | 0.0022 | 0.0022 mg/l |
| 12 Mar 2025, 09:54 | 0.0059 | 0.0059 mg/l |
| 13 Feb 2025, 14:08 | 0.0025 | 0.0025 mg/l |
| 30 Jan 2025, 12:04 | 0.011 | 0.011 mg/l |
| 5 Dec 2024, 13:41 | 0.0034 | 0.0034 mg/l |
| 21 Nov 2024, 13:34 | <0.002 | below 0.002 mg/l (not detected above this) |
| 18 Oct 2024, 09:58 | <0.002 | below 0.002 mg/l (not detected above this) |
| 27 Sep 2024, 12:37 | 0.0039 | 0.0039 mg/l |
| 22 Aug 2024, 11:50 | <0.002 | below 0.002 mg/l (not detected above this) |
| 16 Jul 2024, 14:56 | 0.0064 | 0.0064 mg/l |
| 26 Jun 2024, 11:22 | <0.002 | below 0.002 mg/l (not detected above this) |
| 15 May 2024, 18:33 | 0.019 | 0.019 mg/l |
| 16 Apr 2024, 10:39 | <0.002 | below 0.002 mg/l (not detected above this) |
| 18 Mar 2024, 12:11 | <0.002 | below 0.002 mg/l (not detected above this) |
| 28 Feb 2024, 12:24 | 0.0042 | 0.0042 mg/l |
| 29 Jan 2024, 11:08 | <0.002 | below 0.002 mg/l (not detected above this) |
| 13 Dec 2023, 14:40 | 0.013 | 0.013 mg/l |
| 29 Nov 2023, 10:24 | 0.0025 | 0.0025 mg/l |
| 18 Oct 2023, 10:10 | <0.002 | below 0.002 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.07 mg/l
Sampled 18 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 15:24 | 0.07 | 0.07 mg/l |
| 18 Mar 2026, 13:42 | 0.219 | 0.219 mg/l |
| 4 Feb 2026, 10:13 | 0.399 | 0.399 mg/l |
| 9 Jan 2026, 10:11 | 0.339 | 0.339 mg/l |
| 12 Mar 2025, 09:54 | 0.399 | 0.399 mg/l |
| 13 Feb 2025, 14:08 | 0.489 | 0.489 mg/l |
| 30 Jan 2025, 12:04 | 0.549 | 0.549 mg/l |
| 5 Dec 2024, 13:41 | 0.529 | 0.529 mg/l |
| 21 Nov 2024, 13:34 | 0.289 | 0.289 mg/l |
| 18 Oct 2024, 09:58 | 0.349 | 0.349 mg/l |
| 27 Sep 2024, 12:37 | 0.119 | 0.119 mg/l |
| 22 Aug 2024, 11:50 | 0.239 | 0.239 mg/l |
| 16 Jul 2024, 14:56 | 0.106 | 0.106 mg/l |
| 26 Jun 2024, 11:22 | 0.208 | 0.208 mg/l |
| 15 May 2024, 18:33 | 0.129 | 0.129 mg/l |
| 16 Apr 2024, 10:39 | 0.169 | 0.169 mg/l |
| 18 Mar 2024, 12:11 | 0.239 | 0.239 mg/l |
| 28 Feb 2024, 12:24 | 0.309 | 0.309 mg/l |
| 29 Jan 2024, 11:08 | 0.389 | 0.389 mg/l |
| 13 Dec 2023, 14:40 | 0.469 | 0.469 mg/l |
| 29 Nov 2023, 10:24 | 0.369 | 0.369 mg/l |
| 18 Oct 2023, 10:10 | 0.279 | 0.279 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
below 0.001 mg/l (not detected above this)
Sampled 18 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 15:24 | <0.001 | below 0.001 mg/l (not detected above this) |
| 18 Mar 2026, 13:42 | 0.0016 | 0.0016 mg/l |
| 4 Feb 2026, 10:13 | 0.0016 | 0.0016 mg/l |
| 9 Jan 2026, 10:11 | 0.0031 | 0.0031 mg/l |
| 12 Mar 2025, 09:54 | 0.0018 | 0.0018 mg/l |
| 13 Feb 2025, 14:08 | 0.002 | 0.002 mg/l |
| 30 Jan 2025, 12:04 | 0.0017 | 0.0017 mg/l |
| 5 Dec 2024, 13:41 | 0.0022 | 0.0022 mg/l |
| 21 Nov 2024, 13:34 | 0.0028 | 0.0028 mg/l |
| 18 Oct 2024, 09:58 | <0.001 | below 0.001 mg/l (not detected above this) |
| 27 Sep 2024, 12:37 | 0.0012 | 0.0012 mg/l |
| 22 Aug 2024, 11:50 | 0.0017 | 0.0017 mg/l |
| 16 Jul 2024, 14:56 | 0.0015 | 0.0015 mg/l |
| 26 Jun 2024, 11:22 | 0.0024 | 0.0024 mg/l |
| 15 May 2024, 18:33 | 0.0015 | 0.0015 mg/l |
| 16 Apr 2024, 10:39 | <0.001 | below 0.001 mg/l (not detected above this) |
| 18 Mar 2024, 12:11 | <0.001 | below 0.001 mg/l (not detected above this) |
| 28 Feb 2024, 12:24 | <0.001 | below 0.001 mg/l (not detected above this) |
| 29 Jan 2024, 11:08 | 0.0012 | 0.0012 mg/l |
| 13 Dec 2023, 14:40 | 0.0023 | 0.0023 mg/l |
| 29 Nov 2023, 10:24 | <0.001 | below 0.001 mg/l (not detected above this) |
| 18 Oct 2023, 10:10 | 0.0013 | 0.0013 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
38 µS/cm
Sampled 18 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 15:24 | 38 | 38 µS/cm |
| 18 Mar 2026, 13:42 | 36 | 36 µS/cm |
| 4 Feb 2026, 10:13 | 45 | 45 µS/cm |
| 9 Jan 2026, 10:11 | 53 | 53 µS/cm |
| 12 Mar 2025, 09:54 | 53 | 53 µS/cm |
| 13 Feb 2025, 14:08 | 54 | 54 µS/cm |
| 30 Jan 2025, 12:04 | 51 | 51 µS/cm |
| 5 Dec 2024, 13:41 | 40 | 40 µS/cm |
| 21 Nov 2024, 13:34 | 49 | 49 µS/cm |
| 18 Oct 2024, 09:58 | 39 | 39 µS/cm |
| 27 Sep 2024, 12:37 | 37 | 37 µS/cm |
| 22 Aug 2024, 11:50 | 26 | 26 µS/cm |
| 16 Jul 2024, 14:56 | 39 | 39 µS/cm |
| 26 Jun 2024, 11:22 | 49 | 49 µS/cm |
| 15 May 2024, 18:33 | 35 | 35 µS/cm |
| 16 Apr 2024, 10:39 | 31 | 31 µS/cm |
| 18 Mar 2024, 12:11 | 32 | 32 µS/cm |
| 28 Feb 2024, 12:24 | 38 | 38 µS/cm |
| 29 Jan 2024, 11:08 | 43 | 43 µS/cm |
| 13 Dec 2023, 14:40 | 42 | 42 µS/cm |
| 29 Nov 2023, 10:24 | 46 | 46 µS/cm |
| 18 Oct 2023, 10:10 | 45 | 45 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 – May 2026 | 100.2% 18 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 22 | Oct 2023 – May 2026 | 10.9 mg/l 18 May 2026 |
| Temperature of Water 0076 | River water | 22 | Oct 2023 – May 2026 | 11.6 °C 18 May 2026 |
| pH 0061 | River water | 22 | Oct 2023 – May 2026 | 7.94 18 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 22 | Oct 2023 – May 2026 | 0.0026 mg/l 18 May 2026 |
| Nitrate as N 0117 | River water | 22 | Oct 2023 – May 2026 | 0.07 mg/l 18 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 22 | Oct 2023 – May 2026 | below 0.001 mg/l 18 May 2026 |
| Conductivity at 25 C 0077 | River water | 22 | Oct 2023 – May 2026 | 38 µS/cm 18 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 22 | Oct 2023 – May 2026 | 10 mg/l 18 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 22 | Oct 2023 – May 2026 | 0.00005 mg/l 18 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 18 | Feb 2024 – May 2026 | 1.3 mg/l 18 May 2026 |
| Nitrite as N 0118 | River water | 22 | Oct 2023 – May 2026 | below 0.001 mg/l 18 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 22 | Oct 2023 – May 2026 | 0.071 mg/l 18 May 2026 |
| Phosphorus, Total as P 0348 | River water | 15 | May 2024 – May 2026 | 0.0033 mg/l 18 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.