Thame above Eythrope Lake
EA name: THAME ABOVE EYTHROPE LAKE
Environment Agency sampling point TH-PTAR0020 · 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
- 13 Mar 2025, 12:4219 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 25 Oct 2026 and had nothing newer.
- Samples banked
- 17 since 5 Oct 2023 Imported periods: 1 Oct 2023 – 25 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Environmental monitoring statutory (EU directives)
- Where
- National Grid 477630, 213525As published, to the nearest 1 m. Open in a map
- River, by its own name
- Thame
- River, by the map
- River ThamePlaced on the river its name gives, 11 m from the line.
- Next gauge downstream
- None tracedThe map stops before any gauge.
- Nearest gauge upstream
- Aylesbury Thame On the River Thame · 2.6 km along the riverAylesbury On the Bear Brook · 7.0 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (17 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
93.3%
Sampled 13 Mar 2025, 19 months ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2025, 12:42 | 93.3 | 93.3% |
| 25 Feb 2025, 10:20 | 85.3 | 85.3% |
| 15 Jan 2025, 13:02 | 90.6 | 90.6% |
| 17 Dec 2024, 12:23 | 89.4 | 89.4% |
| 22 Nov 2024, 13:36 | 88.2 | 88.2% |
| 18 Oct 2024, 10:13 | 76.4 | 76.4% |
| 10 Sep 2024, 11:09 | 69.4 | 69.4% |
| 15 Aug 2024, 11:53 | 73.5 | 73.5% |
| 26 Jul 2024, 09:49 | 55.2 | 55.2% |
| 18 Jun 2024, 12:29 | 82.1 | 82.1% |
| 19 Mar 2024, 12:16 | 90.5 | 90.5% |
| 28 Feb 2024, 12:28 | 91.1 | 91.1% |
| 30 Jan 2024, 10:54 | 89.7 | 89.7% |
| 7 Dec 2023, 10:21 | 82.6 | 82.6% |
| 14 Nov 2023, 09:44 | 62.5 | 62.5% |
| 26 Oct 2023, 10:29 | 60.7 | 60.7% |
| 5 Oct 2023, 13:24 | 56.7 | 56.7% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11.3 mg/l
Sampled 13 Mar 2025, 19 months ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2025, 12:42 | 11.3 | 11.3 mg/l |
| 25 Feb 2025, 10:20 | 10.1 | 10.1 mg/l |
| 15 Jan 2025, 13:02 | 10.8 | 10.8 mg/l |
| 17 Dec 2024, 12:23 | 10.3 | 10.3 mg/l |
| 22 Nov 2024, 13:36 | 10.8 | 10.8 mg/l |
| 18 Oct 2024, 10:13 | 8.05 | 8.05 mg/l |
| 10 Sep 2024, 11:09 | 6.79 | 6.79 mg/l |
| 15 Aug 2024, 11:53 | 6.75 | 6.75 mg/l |
| 26 Jul 2024, 09:49 | 5.15 | 5.15 mg/l |
| 18 Jun 2024, 12:29 | 7.95 | 7.95 mg/l |
| 19 Mar 2024, 12:16 | 9.91 | 9.91 mg/l |
| 28 Feb 2024, 12:28 | 10.7 | 10.7 mg/l |
| 30 Jan 2024, 10:54 | 10.5 | 10.5 mg/l |
| 7 Dec 2023, 10:21 | 10.2 | 10.2 mg/l |
| 14 Nov 2023, 09:44 | 7.08 | 7.08 mg/l |
| 26 Oct 2023, 10:29 | 6.48 | 6.48 mg/l |
| 5 Oct 2023, 13:24 | 5.59 | 5.59 mg/l |
Water temperature
code 0076 · °C
7.1 °C
Sampled 13 Mar 2025, 19 months ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2025, 12:42 | 7.1 | 7.1 °C |
| 25 Feb 2025, 10:20 | 8 | 8 °C |
| 15 Jan 2025, 13:02 | 7.8 | 7.8 °C |
| 17 Dec 2024, 12:23 | 8.9 | 8.9 °C |
| 22 Nov 2024, 13:36 | 6.6 | 6.6 °C |
| 18 Oct 2024, 10:13 | 12.9 | 12.9 °C |
| 10 Sep 2024, 11:09 | 16.3 | 16.3 °C |
| 15 Aug 2024, 11:53 | 19.4 | 19.4 °C |
| 26 Jul 2024, 09:49 | 18.6 | 18.6 °C |
| 18 Jun 2024, 12:29 | 16.8 | 16.8 °C |
| 19 Mar 2024, 12:16 | 11.2 | 11.2 °C |
| 28 Feb 2024, 12:28 | 8.1 | 8.1 °C |
| 30 Jan 2024, 10:54 | 8.5 | 8.5 °C |
| 7 Dec 2023, 10:21 | 6.2 | 6.2 °C |
| 14 Nov 2023, 09:44 | 9.8 | 9.8 °C |
| 26 Oct 2023, 10:29 | 12.3 | 12.3 °C |
| 5 Oct 2023, 13:24 | 15.9 | 15.9 °C |
pH
code 0061
8.11
Sampled 13 Mar 2025, 19 months ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2025, 12:42 | 8.11 | 8.11 |
| 25 Feb 2025, 10:20 | 7.79 | 7.79 |
| 15 Jan 2025, 13:02 | 7.95 | 7.95 |
| 17 Dec 2024, 12:23 | 7.94 | 7.94 |
| 22 Nov 2024, 13:36 | 7.91 | 7.91 |
| 18 Oct 2024, 10:13 | 7.7 | 7.7 |
| 10 Sep 2024, 11:09 | 7.62 | 7.62 |
| 15 Aug 2024, 11:53 | 7.65 | 7.65 |
| 26 Jul 2024, 09:49 | 7.53 | 7.53 |
| 18 Jun 2024, 12:29 | 7.78 | 7.78 |
| 19 Mar 2024, 12:16 | 7.95 | 7.95 |
| 28 Feb 2024, 12:28 | 7.84 | 7.84 |
| 30 Jan 2024, 10:54 | 8 | 8 |
| 7 Dec 2023, 10:21 | 7.78 | 7.78 |
| 14 Nov 2023, 09:44 | 7.56 | 7.56 |
| 26 Oct 2023, 10:29 | 7.63 | 7.63 |
| 5 Oct 2023, 13:24 | 7.44 | 7.44 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.04 mg/l
Sampled 13 Mar 2025, 19 months ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2025, 12:42 | 0.04 | 0.04 mg/l |
| 25 Feb 2025, 10:20 | 0.037 | 0.037 mg/l |
| 15 Jan 2025, 13:02 | 0.23 | 0.23 mg/l |
| 17 Dec 2024, 12:23 | 0.038 | 0.038 mg/l |
| 22 Nov 2024, 13:36 | 0.033 | 0.033 mg/l |
| 18 Oct 2024, 10:13 | 0.031 | 0.031 mg/l |
| 10 Sep 2024, 11:09 | 0.034 | 0.034 mg/l |
| 15 Aug 2024, 11:53 | 0.039 | 0.039 mg/l |
| 26 Jul 2024, 09:49 | 0.039 | 0.039 mg/l |
| 18 Jun 2024, 12:29 | 0.037 | 0.037 mg/l |
| 19 Mar 2024, 12:16 | 0.039 | 0.039 mg/l |
| 28 Feb 2024, 12:28 | 0.053 | 0.053 mg/l |
| 30 Jan 2024, 10:54 | 0.05 | 0.05 mg/l |
| 7 Dec 2023, 10:21 | 0.072 | 0.072 mg/l |
| 14 Nov 2023, 09:44 | 0.044 | 0.044 mg/l |
| 26 Oct 2023, 10:29 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Oct 2023, 13:24 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
9.28 mg/l
Sampled 13 Mar 2025, 19 months ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2025, 12:42 | 9.28 | 9.28 mg/l |
| 25 Feb 2025, 10:20 | 5.37 | 5.37 mg/l |
| 15 Jan 2025, 13:02 | 7.13 | 7.13 mg/l |
| 17 Dec 2024, 12:23 | 6.78 | 6.78 mg/l |
| 22 Nov 2024, 13:36 | 7.88 | 7.88 mg/l |
| 18 Oct 2024, 10:13 | 4.99 | 4.99 mg/l |
| 10 Sep 2024, 11:09 | 11 | 11 mg/l |
| 15 Aug 2024, 11:53 | 15 | 15 mg/l |
| 26 Jul 2024, 09:49 | 12 | 12 mg/l |
| 18 Jun 2024, 12:29 | 9.36 | 9.36 mg/l |
| 19 Mar 2024, 12:16 | 6.38 | 6.38 mg/l |
| 28 Feb 2024, 12:28 | 7.47 | 7.47 mg/l |
| 30 Jan 2024, 10:54 | 7.47 | 7.47 mg/l |
| 7 Dec 2023, 10:21 | 6.68 | 6.68 mg/l |
| 14 Nov 2023, 09:44 | 5.28 | 5.28 mg/l |
| 26 Oct 2023, 10:29 | 7.08 | 7.08 mg/l |
| 5 Oct 2023, 13:24 | 13 | 13 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.21 mg/l
Sampled 13 Mar 2025, 19 months ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2025, 12:42 | 0.21 | 0.21 mg/l |
| 25 Feb 2025, 10:20 | 0.18 | 0.18 mg/l |
| 15 Jan 2025, 13:02 | 0.27 | 0.27 mg/l |
| 17 Dec 2024, 12:23 | 0.19 | 0.19 mg/l |
| 22 Nov 2024, 13:36 | 0.19 | 0.19 mg/l |
| 18 Oct 2024, 10:13 | 0.19 | 0.19 mg/l |
| 10 Sep 2024, 11:09 | 0.4 | 0.4 mg/l |
| 15 Aug 2024, 11:53 | 0.41 | 0.41 mg/l |
| 26 Jul 2024, 09:49 | 0.35 | 0.35 mg/l |
| 18 Jun 2024, 12:29 | 0.4 | 0.4 mg/l |
| 19 Mar 2024, 12:16 | 0.18 | 0.18 mg/l |
| 28 Feb 2024, 12:28 | 0.17 | 0.17 mg/l |
| 30 Jan 2024, 10:54 | 0.18 | 0.18 mg/l |
| 7 Dec 2023, 10:21 | 0.2 | 0.2 mg/l |
| 14 Nov 2023, 09:44 | 0.18 | 0.18 mg/l |
| 26 Oct 2023, 10:29 | 0.22 | 0.22 mg/l |
| 5 Oct 2023, 13:24 | 0.23 | 0.23 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
846 µS/cm
Sampled 13 Mar 2025, 19 months ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2025, 12:42 | 846 | 846 µS/cm |
| 25 Feb 2025, 10:20 | 655 | 655 µS/cm |
| 15 Jan 2025, 13:02 | 847 | 847 µS/cm |
| 17 Dec 2024, 12:23 | 809 | 809 µS/cm |
| 22 Nov 2024, 13:36 | 819 | 819 µS/cm |
| 18 Oct 2024, 10:13 | 725 | 725 µS/cm |
| 10 Sep 2024, 11:09 | 780 | 780 µS/cm |
| 15 Aug 2024, 11:53 | 966 | 966 µS/cm |
| 26 Jul 2024, 09:49 | 862 | 862 µS/cm |
| 18 Jun 2024, 12:29 | 763 | 763 µS/cm |
| 19 Mar 2024, 12:16 | 774 | 774 µS/cm |
| 28 Feb 2024, 12:28 | 783 | 783 µS/cm |
| 30 Jan 2024, 10:54 | 807 | 807 µS/cm |
| 7 Dec 2023, 10:21 | 720 | 720 µS/cm |
| 14 Nov 2023, 09:44 | 579 | 579 µS/cm |
| 26 Oct 2023, 10:29 | 738 | 738 µS/cm |
| 5 Oct 2023, 13:24 | 900 | 900 µS/cm |
Everything measured here
22 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 22 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 17 | Oct 2023 – Mar 2025 | 93.3% 13 Mar 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 17 | Oct 2023 – Mar 2025 | 11.3 mg/l 13 Mar 2025 |
| Temperature of Water 0076 | River water | 17 | Oct 2023 – Mar 2025 | 7.1 °C 13 Mar 2025 |
| pH 0061 | River water | 17 | Oct 2023 – Mar 2025 | 8.11 13 Mar 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 17 | Oct 2023 – Mar 2025 | 0.04 mg/l 13 Mar 2025 |
| Nitrate as N 0117 | River water | 17 | Oct 2023 – Mar 2025 | 9.28 mg/l 13 Mar 2025 |
| Orthophosphate, reactive as P 0180 | River water | 17 | Oct 2023 – Mar 2025 | 0.21 mg/l 13 Mar 2025 |
| Conductivity at 25 C 0077 | River water | 17 | Oct 2023 – Mar 2025 | 846 µS/cm 13 Mar 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 17 | Oct 2023 – Mar 2025 | 250 mg/l 13 Mar 2025 |
| Ammonia un-ionised as N 0119 | River water | 17 | Oct 2023 – Mar 2025 | 0.00059 mg/l 13 Mar 2025 |
| BOD : 5 Day ATU 0085 | River water | 16 | Oct 2023 – Mar 2025 | 1.8 mg/l 13 Mar 2025 |
| Cadmium, Dissolved 0106 | River water | 2 | Nov 2023 – Feb 2024 | 0.014 µg/l 28 Feb 2024 |
| Calcium, Dissolved 0239 | River water | 2 | Nov 2023 – Feb 2024 | 130 mg/l 28 Feb 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 2 | Nov 2023 – Feb 2024 | 6.5 mg/l 28 Feb 2024 |
| Lead : BLM Bioavailable 3377 | River water | 2 | Nov 2023 – Feb 2024 | 0.01 µg/l 28 Feb 2024 |
| Lead, Dissolved 0052 | River water | 2 | Nov 2023 – Feb 2024 | below 0.1 µg/l 28 Feb 2024 |
| Magnesium, Dissolved 0235 | River water | 2 | Nov 2023 – Feb 2024 | 6.4 mg/l 28 Feb 2024 |
| Mercury, Dissolved 0103 | River water | 2 | Nov 2023 – Feb 2024 | below 0.01 µg/l 28 Feb 2024 |
| Nickel : BLM Bioavailable 3878 | River water | 2 | Nov 2023 – Feb 2024 | 1.1 µg/l 28 Feb 2024 |
| Nickel, Dissolved 3410 | River water | 2 | Nov 2023 – Feb 2024 | 3 µg/l 28 Feb 2024 |
| Nitrite as N 0118 | River water | 17 | Oct 2023 – Mar 2025 | 0.022 mg/l 13 Mar 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 17 | Oct 2023 – Mar 2025 | 9.3 mg/l 13 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.