Alne River Little Alne
EA name: ALNE RIVER LITTLE ALNE
Environment Agency sampling point MD-08101500 · 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 May 2026, 12:365 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 8 Oct 2026 and had nothing newer.
- Samples banked
- 18 since 19 Oct 2023 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 414190, 261120As published, to the nearest 10 m. Open in a map
- River, by its own name
- Alne
- River, by the map
- River AlnePlaced on the river its name gives, 6 m from the line.
- Next gauge downstream
- Little Alne On the River Alne · 0.1 km along the river
- Nearest gauge upstream
- Henley River On the River Alne · 6.9 km along the river
- Why it was sampled
- Monitoring (national agency policy) (18 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
99.7%
Sampled 20 May 2026, 5 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 May 2026, 12:36 | 99.7 | 99.7% |
| 14 Oct 2025, 12:56 | 94 | 94% |
| 23 Jul 2025, 12:49 | 91.5 | 91.5% |
| 6 Mar 2025, 11:24 | 102 | 102% |
| 13 Feb 2025, 10:27 | 98 | 98% |
| 30 Jan 2025, 12:32 | 99.3 | 99.3% |
| 12 Dec 2024, 12:42 | 95 | 95% |
| 26 Nov 2024, 12:09 | 95.6 | 95.6% |
| 22 Oct 2024, 11:30 | 95.4 | 95.4% |
| 16 Sep 2024, 11:54 | 92.1 | 92.1% |
| 15 May 2024, 09:04 | 93.7 | 93.7% |
| 17 Apr 2024, 10:58 | 95.2 | 95.2% |
| 20 Mar 2024, 13:36 | 98.5 | 98.5% |
| 29 Feb 2024, 09:01 | 96 | 96% |
| 16 Jan 2024, 11:21 | 98.1 | 98.1% |
| 6 Dec 2023, 13:28 | 89.5 | 89.5% |
| 30 Nov 2023, 14:38 | 97.4 | 97.4% |
| 19 Oct 2023, 11:58 | 93.8 | 93.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.4 mg/l
Sampled 20 May 2026, 5 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 May 2026, 12:36 | 10.4 | 10.4 mg/l |
| 14 Oct 2025, 12:56 | 10 | 10 mg/l |
| 23 Jul 2025, 12:49 | 8.82 | 8.82 mg/l |
| 6 Mar 2025, 11:24 | 12.4 | 12.4 mg/l |
| 13 Feb 2025, 10:27 | 12.5 | 12.5 mg/l |
| 30 Jan 2025, 12:32 | 12.4 | 12.4 mg/l |
| 12 Dec 2024, 12:42 | 11.5 | 11.5 mg/l |
| 26 Nov 2024, 12:09 | 11.1 | 11.1 mg/l |
| 22 Oct 2024, 11:30 | 10.3 | 10.3 mg/l |
| 16 Sep 2024, 11:54 | 9.64 | 9.64 mg/l |
| 15 May 2024, 09:04 | 9.61 | 9.61 mg/l |
| 17 Apr 2024, 10:58 | 10.9 | 10.9 mg/l |
| 20 Mar 2024, 13:36 | 10.7 | 10.7 mg/l |
| 29 Feb 2024, 09:01 | 11.2 | 11.2 mg/l |
| 16 Jan 2024, 11:21 | 12.9 | 12.9 mg/l |
| 6 Dec 2023, 13:28 | 11.3 | 11.3 mg/l |
| 30 Nov 2023, 14:38 | 12.5 | 12.5 mg/l |
| 19 Oct 2023, 11:58 | 9.84 | 9.84 mg/l |
Water temperature
code 0076 · °C
13.4 °C
Sampled 20 May 2026, 5 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 May 2026, 12:36 | 13.4 | 13.4 °C |
| 14 Oct 2025, 12:56 | 12.3 | 12.3 °C |
| 23 Jul 2025, 12:49 | 17 | 17 °C |
| 6 Mar 2025, 11:24 | 7 | 7 °C |
| 13 Feb 2025, 10:27 | 5 | 5 °C |
| 30 Jan 2025, 12:32 | 5.8 | 5.8 °C |
| 12 Dec 2024, 12:42 | 7.2 | 7.2 °C |
| 26 Nov 2024, 12:09 | 8.8 | 8.8 °C |
| 22 Oct 2024, 11:30 | 11.7 | 11.7 °C |
| 16 Sep 2024, 11:54 | 13.2 | 13.2 °C |
| 15 May 2024, 09:04 | 14.1 | 14.1 °C |
| 17 Apr 2024, 10:58 | 9.5 | 9.5 °C |
| 20 Mar 2024, 13:36 | 11.7 | 11.7 °C |
| 29 Feb 2024, 09:01 | 8.4 | 8.4 °C |
| 16 Jan 2024, 11:21 | 3.7 | 3.7 °C |
| 6 Dec 2023, 13:28 | 5.4 | 5.4 °C |
| 30 Nov 2023, 14:38 | 4.7 | 4.7 °C |
| 19 Oct 2023, 11:58 | 13.1 | 13.1 °C |
pH
code 0061
8.21
Sampled 20 May 2026, 5 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 May 2026, 12:36 | 8.21 | 8.21 |
| 14 Oct 2025, 12:56 | 8.17 | 8.17 |
| 23 Jul 2025, 12:49 | 8.1 | 8.1 |
| 6 Mar 2025, 11:24 | 8.25 | 8.25 |
| 13 Feb 2025, 10:27 | 7.85 | 7.85 |
| 30 Jan 2025, 12:32 | 7.97 | 7.97 |
| 12 Dec 2024, 12:42 | 8.14 | 8.14 |
| 26 Nov 2024, 12:09 | 8 | 8 |
| 22 Oct 2024, 11:30 | 7.96 | 7.96 |
| 16 Sep 2024, 11:54 | 7.98 | 7.98 |
| 15 May 2024, 09:04 | 8.12 | 8.12 |
| 17 Apr 2024, 10:58 | 8.06 | 8.06 |
| 20 Mar 2024, 13:36 | 8.12 | 8.12 |
| 29 Feb 2024, 09:01 | 8.14 | 8.14 |
| 16 Jan 2024, 11:21 | 8.07 | 8.07 |
| 6 Dec 2023, 13:28 | 7.61 | 7.61 |
| 30 Nov 2023, 14:38 | 8.18 | 8.18 |
| 19 Oct 2023, 11:58 | 7.53 | 7.53 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 20 May 2026, 5 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 May 2026, 12:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Oct 2025, 12:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Jul 2025, 12:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Mar 2025, 11:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Feb 2025, 10:27 | 0.031 | 0.031 mg/l |
| 30 Jan 2025, 12:32 | 0.054 | 0.054 mg/l |
| 12 Dec 2024, 12:42 | 0.037 | 0.037 mg/l |
| 26 Nov 2024, 12:09 | 0.039 | 0.039 mg/l |
| 22 Oct 2024, 11:30 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Sep 2024, 11:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 May 2024, 09:04 | 0.031 | 0.031 mg/l |
| 17 Apr 2024, 10:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Mar 2024, 13:36 | 0.043 | 0.043 mg/l |
| 29 Feb 2024, 09:01 | 0.053 | 0.053 mg/l |
| 16 Jan 2024, 11:21 | 0.049 | 0.049 mg/l |
| 6 Dec 2023, 13:28 | 0.051 | 0.051 mg/l |
| 30 Nov 2023, 14:38 | 0.034 | 0.034 mg/l |
| 19 Oct 2023, 11:58 | 0.065 | 0.065 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.88 mg/l
Sampled 20 May 2026, 5 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 May 2026, 12:36 | 2.88 | 2.88 mg/l |
| 14 Oct 2025, 12:56 | 3.49 | 3.49 mg/l |
| 23 Jul 2025, 12:49 | 2.79 | 2.79 mg/l |
| 6 Mar 2025, 11:24 | 4.39 | 4.39 mg/l |
| 13 Feb 2025, 10:27 | 4.29 | 4.29 mg/l |
| 30 Jan 2025, 12:32 | 3.68 | 3.68 mg/l |
| 12 Dec 2024, 12:42 | 3.78 | 3.78 mg/l |
| 26 Nov 2024, 12:09 | 3.98 | 3.98 mg/l |
| 22 Oct 2024, 11:30 | 3.48 | 3.48 mg/l |
| 16 Sep 2024, 11:54 | 3.39 | 3.39 mg/l |
| 15 May 2024, 09:04 | 3.87 | 3.87 mg/l |
| 17 Apr 2024, 10:58 | 3.48 | 3.48 mg/l |
| 20 Mar 2024, 13:36 | 3.17 | 3.17 mg/l |
| 29 Feb 2024, 09:01 | 4.88 | 4.88 mg/l |
| 16 Jan 2024, 11:21 | 4.78 | 4.78 mg/l |
| 6 Dec 2023, 13:28 | 3.69 | 3.69 mg/l |
| 30 Nov 2023, 14:38 | 4.08 | 4.08 mg/l |
| 19 Oct 2023, 11:58 | 6.07 | 6.07 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.095 mg/l
Sampled 20 May 2026, 5 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 May 2026, 12:36 | 0.095 | 0.095 mg/l |
| 14 Oct 2025, 12:56 | 0.19 | 0.19 mg/l |
| 23 Jul 2025, 12:49 | 0.26 | 0.26 mg/l |
| 6 Mar 2025, 11:24 | 0.11 | 0.11 mg/l |
| 13 Feb 2025, 10:27 | 0.15 | 0.15 mg/l |
| 30 Jan 2025, 12:32 | 0.2 | 0.2 mg/l |
| 12 Dec 2024, 12:42 | 0.19 | 0.19 mg/l |
| 26 Nov 2024, 12:09 | 0.24 | 0.24 mg/l |
| 22 Oct 2024, 11:30 | 0.2 | 0.2 mg/l |
| 16 Sep 2024, 11:54 | 0.17 | 0.17 mg/l |
| 15 May 2024, 09:04 | 0.19 | 0.19 mg/l |
| 17 Apr 2024, 10:58 | 0.18 | 0.18 mg/l |
| 20 Mar 2024, 13:36 | 0.17 | 0.17 mg/l |
| 29 Feb 2024, 09:01 | 0.18 | 0.18 mg/l |
| 16 Jan 2024, 11:21 | 0.17 | 0.17 mg/l |
| 6 Dec 2023, 13:28 | 0.2 | 0.2 mg/l |
| 30 Nov 2023, 14:38 | 0.18 | 0.18 mg/l |
| 19 Oct 2023, 11:58 | 0.27 | 0.27 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1180 µS/cm
Sampled 20 May 2026, 5 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 May 2026, 12:36 | 1180 | 1180 µS/cm |
| 14 Oct 2025, 12:56 | 1455 | 1455 µS/cm |
| 23 Jul 2025, 12:49 | 1287 | 1287 µS/cm |
| 6 Mar 2025, 11:24 | 970 | 970 µS/cm |
| 13 Feb 2025, 10:27 | 839 | 839 µS/cm |
| 30 Jan 2025, 12:32 | 683 | 683 µS/cm |
| 12 Dec 2024, 12:42 | 760 | 760 µS/cm |
| 26 Nov 2024, 12:09 | 544 | 544 µS/cm |
| 22 Oct 2024, 11:30 | 640 | 640 µS/cm |
| 16 Sep 2024, 11:54 | 1282 | 1282 µS/cm |
| 15 May 2024, 09:04 | 991 | 991 µS/cm |
| 17 Apr 2024, 10:58 | 817 | 817 µS/cm |
| 20 Mar 2024, 13:36 | 673 | 673 µS/cm |
| 29 Feb 2024, 09:01 | 852 | 852 µS/cm |
| 16 Jan 2024, 11:21 | 1002 | 1002 µS/cm |
| 6 Dec 2023, 13:28 | 536 | 536 µS/cm |
| 30 Nov 2023, 14:38 | 951 | 951 µS/cm |
| 19 Oct 2023, 11:58 | 438 | 438 µS/cm |
Everything measured here
13 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 13 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 18 | Oct 2023 – May 2026 | 99.7% 20 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 18 | Oct 2023 – May 2026 | 10.4 mg/l 20 May 2026 |
| Temperature of Water 0076 | River water | 18 | Oct 2023 – May 2026 | 13.4 °C 20 May 2026 |
| pH 0061 | River water | 18 | Oct 2023 – May 2026 | 8.21 20 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 18 | Oct 2023 – May 2026 | below 0.03 mg/l 20 May 2026 |
| Nitrate as N 0117 | River water | 18 | Oct 2023 – May 2026 | 2.88 mg/l 20 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 18 | Oct 2023 – May 2026 | 0.095 mg/l 20 May 2026 |
| Conductivity at 25 C 0077 | River water | 18 | Oct 2023 – May 2026 | 1180 µS/cm 20 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 18 | Oct 2023 – May 2026 | 250 mg/l 20 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 18 | Oct 2023 – May 2026 | below 0.0007 mg/l 20 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 14 | Feb 2024 – May 2026 | 2.6 mg/l 20 May 2026 |
| Nitrite as N 0118 | River water | 18 | Oct 2023 – May 2026 | 0.02 mg/l 20 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 18 | Oct 2023 – May 2026 | 2.9 mg/l 20 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.