Peppershill Brook above Thame
EA name: PEPPERSHILL BROOK ABOVE THAME
Environment Agency sampling point TH-PTAR0107 · 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
- 3 Sep 2026, 10:4628 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 26 since 27 Nov 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 465400, 206559As published, to the nearest 1 m. Open in a map
- River, by its own name
- Peppershill Brook
- River, by the map
- Peppershill BrookPlaced on the river its name gives, 34 m from the line.
- Next gauge downstream
- Wheatley On the River Thame · 8.5 km along the river
- Why it was sampled
- Monitoring (national agency policy) (26 samples)
7 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
45%
Sampled 29 Apr 2026, 5 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 Apr 2026, 11:02 | 45 | 45% |
| 29 Apr 2026, 10:12 | 45 | 45% |
| 27 Mar 2026, 13:45 | 104.3 | 104.3% |
| 6 Jan 2026, 09:22 | 67.7 | 67.7% |
| 4 Dec 2025, 09:50 | 70.8 | 70.8% |
| 20 Nov 2025, 09:30 | 69.4 | 69.4% |
| 13 Nov 2025, 10:18 | 51.7 | 51.7% |
| 28 May 2025, 10:15 | 44.2 | 44.2% |
| 31 Mar 2025, 12:18 | 94.2 | 94.2% |
| 21 Mar 2025, 13:12 | 88.6 | 88.6% |
| 17 Dec 2024, 12:17 | 71.8 | 71.8% |
| 11 Nov 2024, 12:15 | 58.5 | 58.5% |
| 22 Jul 2024, 14:23 | 48.1 | 48.1% |
| 24 Jun 2024, 12:59 | 26.4 | 26.4% |
| 25 Apr 2024, 13:14 | 87.5 | 87.5% |
| 27 Mar 2024, 15:07 | 84.6 | 84.6% |
| 17 Jan 2024, 12:17 | 83.6 | 83.6% |
| 27 Dec 2023, 11:12 | 64.6 | 64.6% |
| 27 Nov 2023, 10:40 | 56.3 | 56.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
5.14 mg/l
Sampled 29 Apr 2026, 5 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 Apr 2026, 11:02 | 5.14 | 5.14 mg/l |
| 29 Apr 2026, 10:12 | 5.13 | 5.13 mg/l |
| 27 Mar 2026, 13:45 | 12 | 12 mg/l |
| 6 Jan 2026, 09:22 | 9.87 | 9.87 mg/l |
| 4 Dec 2025, 09:50 | 8.58 | 8.58 mg/l |
| 20 Nov 2025, 09:30 | 9.23 | 9.23 mg/l |
| 13 Nov 2025, 10:18 | 5.4 | 5.4 mg/l |
| 28 May 2025, 10:15 | 4.55 | 4.55 mg/l |
| 31 Mar 2025, 12:18 | 10.8 | 10.8 mg/l |
| 21 Mar 2025, 13:12 | 9.82 | 9.82 mg/l |
| 17 Dec 2024, 12:17 | 8.45 | 8.45 mg/l |
| 11 Nov 2024, 12:15 | 6.61 | 6.61 mg/l |
| 22 Jul 2024, 14:23 | 4.58 | 4.58 mg/l |
| 24 Jun 2024, 12:59 | 2.57 | 2.57 mg/l |
| 25 Apr 2024, 13:14 | 10.3 | 10.3 mg/l |
| 27 Mar 2024, 15:07 | 9.81 | 9.81 mg/l |
| 17 Jan 2024, 12:17 | 11.5 | 11.5 mg/l |
| 27 Dec 2023, 11:12 | 7.53 | 7.53 mg/l |
| 27 Nov 2023, 10:40 | 6.59 | 6.59 mg/l |
Water temperature
code 0076 · °C
9.4 °C
Sampled 29 Apr 2026, 5 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 Apr 2026, 11:02 | 9.4 | 9.4 °C |
| 29 Apr 2026, 10:12 | 9.3 | 9.3 °C |
| 27 Mar 2026, 13:45 | 9.2 | 9.2 °C |
| 6 Jan 2026, 09:22 | 0 | 0 °C |
| 4 Dec 2025, 09:50 | 7 | 7 °C |
| 20 Nov 2025, 09:30 | 3.4 | 3.4 °C |
| 13 Nov 2025, 10:18 | 13.3 | 13.3 °C |
| 28 May 2025, 10:15 | 13.9 | 13.9 °C |
| 31 Mar 2025, 12:18 | 9.2 | 9.2 °C |
| 21 Mar 2025, 13:12 | 10.7 | 10.7 °C |
| 17 Dec 2024, 12:17 | 8.2 | 8.2 °C |
| 11 Nov 2024, 12:15 | 9.9 | 9.9 °C |
| 22 Jul 2024, 14:23 | 17.6 | 17.6 °C |
| 24 Jun 2024, 12:59 | 16.5 | 16.5 °C |
| 25 Apr 2024, 13:14 | 8 | 8 °C |
| 27 Mar 2024, 15:07 | 8.8 | 8.8 °C |
| 17 Jan 2024, 12:17 | 2.1 | 2.1 °C |
| 27 Dec 2023, 11:12 | 8.6 | 8.6 °C |
| 27 Nov 2023, 10:40 | 8.4 | 8.4 °C |
pH
code 0061
7.62
Sampled 29 Apr 2026, 5 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 Apr 2026, 11:02 | 7.62 | 7.62 |
| 29 Apr 2026, 10:12 | 7.61 | 7.61 |
| 27 Mar 2026, 13:45 | 8.31 | 8.31 |
| 6 Jan 2026, 09:22 | 7.73 | 7.73 |
| 4 Dec 2025, 09:50 | 7.68 | 7.68 |
| 20 Nov 2025, 09:30 | 7.72 | 7.72 |
| 13 Nov 2025, 10:18 | 7.55 | 7.55 |
| 28 May 2025, 10:15 | 7.37 | 7.37 |
| 31 Mar 2025, 12:18 | 7.97 | 7.97 |
| 21 Mar 2025, 13:12 | 7.96 | 7.96 |
| 17 Dec 2024, 12:17 | 7.66 | 7.66 |
| 11 Nov 2024, 12:15 | 7.6 | 7.6 |
| 22 Jul 2024, 14:23 | 7.66 | 7.66 |
| 24 Jun 2024, 12:59 | 7.39 | 7.39 |
| 25 Apr 2024, 13:14 | 7.97 | 7.97 |
| 27 Mar 2024, 15:07 | 7.57 | 7.57 |
| 17 Jan 2024, 12:17 | 7.79 | 7.79 |
| 27 Dec 2023, 11:12 | 7.64 | 7.64 |
| 27 Nov 2023, 10:40 | 7.4 | 7.4 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 29 Apr 2026, 5 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 Apr 2026, 11:02 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 Apr 2026, 10:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 Mar 2026, 13:45 | 0.04 | 0.04 mg/l |
| 6 Jan 2026, 09:22 | 0.69 | 0.69 mg/l |
| 4 Dec 2025, 09:50 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Nov 2025, 09:30 | 0.17 | 0.17 mg/l |
| 13 Nov 2025, 10:18 | 0.067 | 0.067 mg/l |
| 28 May 2025, 10:15 | 0.43 | 0.43 mg/l |
| 31 Mar 2025, 12:18 | 0.11 | 0.11 mg/l |
| 21 Mar 2025, 13:12 | 0.14 | 0.14 mg/l |
| 17 Dec 2024, 12:17 | 0.11 | 0.11 mg/l |
| 11 Nov 2024, 12:15 | 0.24 | 0.24 mg/l |
| 22 Jul 2024, 14:23 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Jun 2024, 12:59 | 0.093 | 0.093 mg/l |
| 25 Apr 2024, 13:14 | 0.035 | 0.035 mg/l |
| 27 Mar 2024, 15:07 | 0.12 | 0.12 mg/l |
| 17 Jan 2024, 12:17 | 0.13 | 0.13 mg/l |
| 27 Dec 2023, 11:12 | 0.095 | 0.095 mg/l |
| 27 Nov 2023, 10:40 | 0.079 | 0.079 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
3.96 mg/l
Sampled 29 Apr 2026, 5 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 Apr 2026, 11:02 | 3.96 | 3.96 mg/l |
| 27 Mar 2026, 13:45 | 9.45 | 9.45 mg/l |
| 6 Jan 2026, 09:22 | 6.96 | 6.96 mg/l |
| 4 Dec 2025, 09:50 | 14.9 | 14.9 mg/l |
| 20 Nov 2025, 09:30 | 12.9 | 12.9 mg/l |
| 13 Nov 2025, 10:18 | 12.6 | 12.6 mg/l |
| 28 May 2025, 10:15 | 6.07 | 6.07 mg/l |
| 31 Mar 2025, 12:18 | 12.8 | 12.8 mg/l |
| 21 Mar 2025, 13:12 | 9.65 | 9.65 mg/l |
| 17 Dec 2024, 12:17 | 4.54 | 4.54 mg/l |
| 11 Nov 2024, 12:15 | 3.76 | 3.76 mg/l |
| 22 Jul 2024, 14:23 | 2.59 | 2.59 mg/l |
| 24 Jun 2024, 12:59 | 0.192 | 0.192 mg/l |
| 25 Apr 2024, 13:14 | 9.38 | 9.38 mg/l |
| 27 Mar 2024, 15:07 | 5.87 | 5.87 mg/l |
| 17 Jan 2024, 12:17 | 7.67 | 7.67 mg/l |
| 27 Dec 2023, 11:12 | 4.46 | 4.46 mg/l |
| 27 Nov 2023, 10:40 | 4.45 | 4.45 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
1.1 mg/l
Sampled 29 Apr 2026, 5 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 Apr 2026, 11:02 | 1.1 | 1.1 mg/l |
| 27 Mar 2026, 13:45 | 0.68 | 0.68 mg/l |
| 6 Jan 2026, 09:22 | 0.5 | 0.5 mg/l |
| 4 Dec 2025, 09:50 | 0.24 | 0.24 mg/l |
| 20 Nov 2025, 09:30 | 0.47 | 0.47 mg/l |
| 13 Nov 2025, 10:18 | 1 | 1 mg/l |
| 28 May 2025, 10:15 | 1.8 | 1.8 mg/l |
| 31 Mar 2025, 12:18 | 0.47 | 0.47 mg/l |
| 21 Mar 2025, 13:12 | 0.33 | 0.33 mg/l |
| 17 Dec 2024, 12:17 | 0.28 | 0.28 mg/l |
| 11 Nov 2024, 12:15 | 0.47 | 0.47 mg/l |
| 22 Jul 2024, 14:23 | 2.1 | 2.1 mg/l |
| 24 Jun 2024, 12:59 | 1.5 | 1.5 mg/l |
| 25 Apr 2024, 13:14 | 0.64 | 0.64 mg/l |
| 27 Mar 2024, 15:07 | 0.18 | 0.18 mg/l |
| 17 Jan 2024, 12:17 | 0.26 | 0.26 mg/l |
| 27 Dec 2023, 11:12 | 0.3 | 0.3 mg/l |
| 27 Nov 2023, 10:40 | 0.38 | 0.38 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
998 µS/cm
Sampled 29 Apr 2026, 5 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 Apr 2026, 11:02 | 998 | 998 µS/cm |
| 27 Mar 2026, 13:45 | 908 | 908 µS/cm |
| 6 Jan 2026, 09:22 | 31 | 31 µS/cm |
| 4 Dec 2025, 09:50 | 794 | 794 µS/cm |
| 20 Nov 2025, 09:30 | 867 | 867 µS/cm |
| 13 Nov 2025, 10:18 | 910 | 910 µS/cm |
| 28 May 2025, 10:15 | 1125 | 1125 µS/cm |
| 31 Mar 2025, 12:18 | 981 | 981 µS/cm |
| 21 Mar 2025, 13:12 | 905 | 905 µS/cm |
| 17 Dec 2024, 12:17 | 773 | 773 µS/cm |
| 11 Nov 2024, 12:15 | 926 | 926 µS/cm |
| 22 Jul 2024, 14:23 | 973 | 973 µS/cm |
| 24 Jun 2024, 12:59 | 968 | 968 µS/cm |
| 25 Apr 2024, 13:14 | 907 | 907 µS/cm |
| 27 Mar 2024, 15:07 | 594 | 594 µS/cm |
| 17 Jan 2024, 12:17 | 836 | 836 µS/cm |
| 27 Dec 2023, 11:12 | 759 | 759 µS/cm |
| 27 Nov 2023, 10:40 | 824 | 824 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 | 19 | Nov 2023 – Apr 2026 | 45% 29 Apr 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 19 | Nov 2023 – Apr 2026 | 5.14 mg/l 29 Apr 2026 |
| Temperature of Water 0076 | River water | 19 | Nov 2023 – Apr 2026 | 9.4 °C 29 Apr 2026 |
| pH 0061 | River water | 19 | Nov 2023 – Apr 2026 | 7.62 29 Apr 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 19 | Nov 2023 – Apr 2026 | below 0.03 mg/l 29 Apr 2026 |
| Nitrate as N 0117 | River water | 18 | Nov 2023 – Apr 2026 | 3.96 mg/l 29 Apr 2026 |
| Orthophosphate, reactive as P 0180 | River water | 18 | Nov 2023 – Apr 2026 | 1.1 mg/l 29 Apr 2026 |
| Conductivity at 25 C 0077 | River water | 18 | Nov 2023 – Apr 2026 | 998 µS/cm 29 Apr 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 18 | Nov 2023 – Apr 2026 | 320 mg/l 29 Apr 2026 |
| Ammonia un-ionised as N 0119 | River water | 18 | Nov 2023 – Apr 2026 | below 0.00022 mg/l 29 Apr 2026 |
| BOD : 5 Day ATU 0085 | River water | 14 | Mar 2024 – Apr 2026 | 2.8 mg/l 29 Apr 2026 |
| Nitrite as N 0118 | River water | 18 | Nov 2023 – Apr 2026 | 0.04 mg/l 29 Apr 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 18 | Nov 2023 – Apr 2026 | 4 mg/l 29 Apr 2026 |
| No flow /No sample 7668 | River water | 7 | Aug 2024 – Sep 2026 | No flow/discharge at sampling point 3 Sep 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.