Wye at Gauging Station, Hedsor
EA name: WYE AT GAUGING STATION, HEDSOR
Environment Agency sampling point TH-PWYR0015 · 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
- 7 May 2026, 12:495 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 16 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 489596, 186676As published, to the nearest 1 m. Open in a map
- River, by its own name
- Wye
- River, by the map
- River WyePlaced on the river its name gives, 0 m from the line.
- Next gauge downstream
- Bourne End On the River Wye · 0.1 km along the river
- Nearest gauge upstream
- Wycombe Hugh On the Hughenden Stream · 12 km along the river
- Why it was sampled
- Monitoring (national agency policy) (22 samples)
Environmental monitoring statutory (EU directives) (2 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
104.5%
Sampled 7 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 May 2026, 12:49 | 104.5 | 104.5% |
| 15 Apr 2026, 10:40 | 103.1 | 103.1% |
| 10 Mar 2026, 11:56 | 101.4 | 101.4% |
| 18 Feb 2026, 10:23 | 93 | 93% |
| 27 Jan 2026, 14:01 | 99.3 | 99.3% |
| 12 Dec 2025, 11:02 | 99.9 | 99.9% |
| 21 Mar 2025, 09:57 | 103.6 | 103.6% |
| 12 Feb 2025, 13:30 | 101.7 | 101.7% |
| 20 Jan 2025, 12:45 | 102.4 | 102.4% |
| 5 Dec 2024, 09:30 | 101.4 | 101.4% |
| 19 Nov 2024, 11:49 | 100.4 | 100.4% |
| 15 Oct 2024, 12:31 | 101.5 | 101.5% |
| 16 Sep 2024, 10:00 | 99.9 | 99.9% |
| 21 Aug 2024, 13:44 | 102.4 | 102.4% |
| 15 Jul 2024, 10:38 | 101 | 101% |
| 19 Jun 2024, 12:39 | 104.1 | 104.1% |
| 22 May 2024, 10:07 | 99 | 99% |
| 17 Apr 2024, 10:22 | 101.9 | 101.9% |
| 20 Mar 2024, 10:17 | 102.8 | 102.8% |
| 20 Feb 2024, 09:59 | 101.8 | 101.8% |
| 17 Jan 2024, 11:32 | 102.5 | 102.5% |
| 8 Dec 2023, 11:28 | 100.8 | 100.8% |
| 20 Nov 2023, 10:39 | 99.6 | 99.6% |
| 16 Oct 2023, 08:57 | 99.6 | 99.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11 mg/l
Sampled 7 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 May 2026, 12:49 | 11 | 11 mg/l |
| 15 Apr 2026, 10:40 | 11 | 11 mg/l |
| 10 Mar 2026, 11:56 | 11.2 | 11.2 mg/l |
| 18 Feb 2026, 10:23 | 11.1 | 11.1 mg/l |
| 27 Jan 2026, 14:01 | 11.6 | 11.6 mg/l |
| 12 Dec 2025, 11:02 | 10.9 | 10.9 mg/l |
| 21 Mar 2025, 09:57 | 11.5 | 11.5 mg/l |
| 12 Feb 2025, 13:30 | 12 | 12 mg/l |
| 20 Jan 2025, 12:45 | 12.1 | 12.1 mg/l |
| 5 Dec 2024, 09:30 | 11.2 | 11.2 mg/l |
| 19 Nov 2024, 11:49 | 11.5 | 11.5 mg/l |
| 15 Oct 2024, 12:31 | 10.7 | 10.7 mg/l |
| 16 Sep 2024, 10:00 | 10.4 | 10.4 mg/l |
| 21 Aug 2024, 13:44 | 10.2 | 10.2 mg/l |
| 15 Jul 2024, 10:38 | 10.4 | 10.4 mg/l |
| 19 Jun 2024, 12:39 | 10.6 | 10.6 mg/l |
| 22 May 2024, 10:07 | 10.4 | 10.4 mg/l |
| 17 Apr 2024, 10:22 | 11.6 | 11.6 mg/l |
| 20 Mar 2024, 10:17 | 11.2 | 11.2 mg/l |
| 20 Feb 2024, 09:59 | 11.7 | 11.7 mg/l |
| 17 Jan 2024, 11:32 | 12.6 | 12.6 mg/l |
| 8 Dec 2023, 11:28 | 11.5 | 11.5 mg/l |
| 20 Nov 2023, 10:39 | 10.9 | 10.9 mg/l |
| 16 Oct 2023, 08:57 | 11.4 | 11.4 mg/l |
Water temperature
code 0076 · °C
12.9 °C
Sampled 7 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 May 2026, 12:49 | 12.9 | 12.9 °C |
| 15 Apr 2026, 10:40 | 12.4 | 12.4 °C |
| 10 Mar 2026, 11:56 | 11 | 11 °C |
| 18 Feb 2026, 10:23 | 7.6 | 7.6 °C |
| 27 Jan 2026, 14:01 | 8.6 | 8.6 °C |
| 12 Dec 2025, 11:02 | 11.3 | 11.3 °C |
| 21 Mar 2025, 09:57 | 10.7 | 10.7 °C |
| 12 Feb 2025, 13:30 | 8.2 | 8.2 °C |
| 20 Jan 2025, 12:45 | 8 | 8 °C |
| 5 Dec 2024, 09:30 | 10.9 | 10.9 °C |
| 19 Nov 2024, 11:49 | 9.2 | 9.2 °C |
| 15 Oct 2024, 12:31 | 12.7 | 12.7 °C |
| 16 Sep 2024, 10:00 | 13.6 | 13.6 °C |
| 21 Aug 2024, 13:44 | 15.3 | 15.3 °C |
| 15 Jul 2024, 10:38 | 14.1 | 14.1 °C |
| 19 Jun 2024, 12:39 | 14.6 | 14.6 °C |
| 22 May 2024, 10:07 | 13.1 | 13.1 °C |
| 17 Apr 2024, 10:22 | 9.5 | 9.5 °C |
| 20 Mar 2024, 10:17 | 11.4 | 11.4 °C |
| 20 Feb 2024, 09:59 | 9.3 | 9.3 °C |
| 17 Jan 2024, 11:32 | 6.4 | 6.4 °C |
| 8 Dec 2023, 11:28 | 9.4 | 9.4 °C |
| 20 Nov 2023, 10:39 | 11.1 | 11.1 °C |
| 16 Oct 2023, 08:57 | 9.3 | 9.3 °C |
pH
code 0061
8.25
Sampled 7 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 May 2026, 12:49 | 8.25 | 8.25 |
| 15 Apr 2026, 10:40 | 8.14 | 8.14 |
| 10 Mar 2026, 11:56 | 8.19 | 8.19 |
| 18 Feb 2026, 10:23 | 8.22 | 8.22 |
| 27 Jan 2026, 14:01 | 8.19 | 8.19 |
| 12 Dec 2025, 11:02 | 8.37 | 8.37 |
| 21 Mar 2025, 09:57 | 8.31 | 8.31 |
| 12 Feb 2025, 13:30 | 8.2 | 8.2 |
| 20 Jan 2025, 12:45 | 8.19 | 8.19 |
| 5 Dec 2024, 09:30 | 8.1 | 8.1 |
| 19 Nov 2024, 11:49 | 8.17 | 8.17 |
| 15 Oct 2024, 12:31 | 8.17 | 8.17 |
| 16 Sep 2024, 10:00 | 7.82 | 7.82 |
| 21 Aug 2024, 13:44 | 8.17 | 8.17 |
| 15 Jul 2024, 10:38 | 8.27 | 8.27 |
| 19 Jun 2024, 12:39 | 8.19 | 8.19 |
| 22 May 2024, 10:07 | 8.14 | 8.14 |
| 17 Apr 2024, 10:22 | 7.85 | 7.85 |
| 20 Mar 2024, 10:17 | 8.26 | 8.26 |
| 20 Feb 2024, 09:59 | 8.2 | 8.2 |
| 17 Jan 2024, 11:32 | 8.34 | 8.34 |
| 8 Dec 2023, 11:28 | 8.3 | 8.3 |
| 20 Nov 2023, 10:39 | 8.16 | 8.16 |
| 16 Oct 2023, 08:57 | 8.26 | 8.26 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 7 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 May 2026, 12:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Apr 2026, 10:40 | 0.098 | 0.098 mg/l |
| 10 Mar 2026, 11:56 | 0.35 | 0.35 mg/l |
| 18 Feb 2026, 10:23 | 0.35 | 0.35 mg/l |
| 27 Jan 2026, 14:01 | 0.13 | 0.13 mg/l |
| 12 Dec 2025, 11:02 | 0.034 | 0.034 mg/l |
| 21 Mar 2025, 09:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Feb 2025, 13:30 | 0.034 | 0.034 mg/l |
| 20 Jan 2025, 12:45 | 0.12 | 0.12 mg/l |
| 19 Nov 2024, 11:49 | 0.2 | 0.2 mg/l |
| 15 Oct 2024, 12:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Sep 2024, 10:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Aug 2024, 13:44 | 0.14 | 0.14 mg/l |
| 15 Jul 2024, 10:38 | 0.24 | 0.24 mg/l |
| 19 Jun 2024, 12:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 May 2024, 10:07 | 0.084 | 0.084 mg/l |
| 17 Apr 2024, 10:22 | 0.17 | 0.17 mg/l |
| 20 Mar 2024, 10:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Feb 2024, 09:59 | 0.48 | 0.48 mg/l |
| 17 Jan 2024, 11:32 | 0.056 | 0.056 mg/l |
| 8 Dec 2023, 11:28 | 0.09 | 0.09 mg/l |
| 20 Nov 2023, 10:39 | 0.069 | 0.069 mg/l |
| 16 Oct 2023, 08:57 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
6.77 mg/l
Sampled 7 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 May 2026, 12:49 | 6.77 | 6.77 mg/l |
| 15 Apr 2026, 10:40 | 7.01 | 7.01 mg/l |
| 10 Mar 2026, 11:56 | 6.74 | 6.74 mg/l |
| 18 Feb 2026, 10:23 | 6.37 | 6.37 mg/l |
| 27 Jan 2026, 14:01 | 3.83 | 3.83 mg/l |
| 12 Dec 2025, 11:02 | 7.06 | 7.06 mg/l |
| 21 Mar 2025, 09:57 | 6.98 | 6.98 mg/l |
| 12 Feb 2025, 13:30 | 7.17 | 7.17 mg/l |
| 20 Jan 2025, 12:45 | 7.33 | 7.33 mg/l |
| 19 Nov 2024, 11:49 | 5.84 | 5.84 mg/l |
| 15 Oct 2024, 12:31 | 6.49 | 6.49 mg/l |
| 16 Sep 2024, 10:00 | 6.88 | 6.88 mg/l |
| 21 Aug 2024, 13:44 | 6.38 | 6.38 mg/l |
| 15 Jul 2024, 10:38 | 5.82 | 5.82 mg/l |
| 19 Jun 2024, 12:39 | 5.98 | 5.98 mg/l |
| 22 May 2024, 10:07 | 5.34 | 5.34 mg/l |
| 17 Apr 2024, 10:22 | 6.12 | 6.12 mg/l |
| 20 Mar 2024, 10:17 | 6.29 | 6.29 mg/l |
| 20 Feb 2024, 09:59 | 6.03 | 6.03 mg/l |
| 17 Jan 2024, 11:32 | 6.76 | 6.76 mg/l |
| 8 Dec 2023, 11:28 | 6.82 | 6.82 mg/l |
| 20 Nov 2023, 10:39 | 6.83 | 6.83 mg/l |
| 16 Oct 2023, 08:57 | 7.56 | 7.56 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.073 mg/l
Sampled 7 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 May 2026, 12:49 | 0.073 | 0.073 mg/l |
| 15 Apr 2026, 10:40 | 0.087 | 0.087 mg/l |
| 10 Mar 2026, 11:56 | 0.084 | 0.084 mg/l |
| 18 Feb 2026, 10:23 | 0.091 | 0.091 mg/l |
| 27 Jan 2026, 14:01 | 0.12 | 0.12 mg/l |
| 12 Dec 2025, 11:02 | 0.21 | 0.21 mg/l |
| 21 Mar 2025, 09:57 | 0.081 | 0.081 mg/l |
| 12 Feb 2025, 13:30 | 0.068 | 0.068 mg/l |
| 20 Jan 2025, 12:45 | 0.084 | 0.084 mg/l |
| 19 Nov 2024, 11:49 | 0.12 | 0.12 mg/l |
| 15 Oct 2024, 12:31 | 0.1 | 0.1 mg/l |
| 16 Sep 2024, 10:00 | 0.14 | 0.14 mg/l |
| 21 Aug 2024, 13:44 | 0.11 | 0.11 mg/l |
| 15 Jul 2024, 10:38 | 0.11 | 0.11 mg/l |
| 19 Jun 2024, 12:39 | 0.072 | 0.072 mg/l |
| 22 May 2024, 10:07 | 0.072 | 0.072 mg/l |
| 17 Apr 2024, 10:22 | 0.052 | 0.052 mg/l |
| 20 Mar 2024, 10:17 | 0.036 | 0.036 mg/l |
| 20 Feb 2024, 09:59 | 0.086 | 0.086 mg/l |
| 17 Jan 2024, 11:32 | 0.064 | 0.064 mg/l |
| 8 Dec 2023, 11:28 | 0.094 | 0.094 mg/l |
| 20 Nov 2023, 10:39 | 0.089 | 0.089 mg/l |
| 16 Oct 2023, 08:57 | 0.15 | 0.15 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
654 µS/cm
Sampled 7 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 May 2026, 12:49 | 654 | 654 µS/cm |
| 15 Apr 2026, 10:40 | 655 | 655 µS/cm |
| 10 Mar 2026, 11:56 | 650 | 650 µS/cm |
| 18 Feb 2026, 10:23 | 642 | 642 µS/cm |
| 27 Jan 2026, 14:01 | 464 | 464 µS/cm |
| 12 Dec 2025, 11:02 | 691 | 691 µS/cm |
| 21 Mar 2025, 09:57 | 636 | 636 µS/cm |
| 12 Feb 2025, 13:30 | 638 | 638 µS/cm |
| 20 Jan 2025, 12:45 | 673 | 673 µS/cm |
| 5 Dec 2024, 09:30 | 622 | 622 µS/cm |
| 19 Nov 2024, 11:49 | 596 | 596 µS/cm |
| 15 Oct 2024, 12:31 | 641 | 641 µS/cm |
| 16 Sep 2024, 10:00 | 676 | 676 µS/cm |
| 21 Aug 2024, 13:44 | 644 | 644 µS/cm |
| 15 Jul 2024, 10:38 | 650 | 650 µS/cm |
| 19 Jun 2024, 12:39 | 643 | 643 µS/cm |
| 22 May 2024, 10:07 | 586 | 586 µS/cm |
| 17 Apr 2024, 10:22 | 625 | 625 µS/cm |
| 20 Mar 2024, 10:17 | 614 | 614 µS/cm |
| 20 Feb 2024, 09:59 | 635 | 635 µS/cm |
| 17 Jan 2024, 11:32 | 623 | 623 µS/cm |
| 8 Dec 2023, 11:28 | 630 | 630 µS/cm |
| 20 Nov 2023, 10:39 | 656 | 656 µS/cm |
| 16 Oct 2023, 08:57 | 686 | 686 µS/cm |
Everything measured here
19 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 19 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 24 | Oct 2023 – May 2026 | 104.5% 7 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 24 | Oct 2023 – May 2026 | 11 mg/l 7 May 2026 |
| Temperature of Water 0076 | River water | 24 | Oct 2023 – May 2026 | 12.9 °C 7 May 2026 |
| pH 0061 | River water | 24 | Oct 2023 – May 2026 | 8.25 7 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 23 | Oct 2023 – May 2026 | below 0.03 mg/l 7 May 2026 |
| Nitrate as N 0117 | River water | 23 | Oct 2023 – May 2026 | 6.77 mg/l 7 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 23 | Oct 2023 – May 2026 | 0.073 mg/l 7 May 2026 |
| Conductivity at 25 C 0077 | River water | 24 | Oct 2023 – May 2026 | 654 µS/cm 7 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 23 | Oct 2023 – May 2026 | 260 mg/l 7 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 23 | Oct 2023 – May 2026 | below 0.00068 mg/l 7 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 20 | Feb 2024 – May 2026 | 2.1 mg/l 7 May 2026 |
| Calcium, Dissolved 0239 | River water | 2 | Oct 2023 – Feb 2024 | 110 mg/l 20 Feb 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 2 | Oct 2023 – Feb 2024 | 1.3 mg/l 20 Feb 2024 |
| Lead : BLM Bioavailable 3377 | River water | 2 | Oct 2023 – Feb 2024 | 0.14 µg/l 20 Feb 2024 |
| Lead, Dissolved 0052 | River water | 2 | Oct 2023 – Feb 2024 | 0.18 µg/l 20 Feb 2024 |
| Nickel : BLM Bioavailable 3878 | River water | 2 | Oct 2023 – Feb 2024 | 0.73 µg/l 20 Feb 2024 |
| Nickel, Dissolved 3410 | River water | 2 | Oct 2023 – Feb 2024 | 0.86 µg/l 20 Feb 2024 |
| Nitrite as N 0118 | River water | 23 | Oct 2023 – May 2026 | 0.033 mg/l 7 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 23 | Oct 2023 – May 2026 | 6.8 mg/l 7 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.