Lambourn at Maidencourt Farm
EA name: LAMBOURN AT MAIDENCOURT FARM
Environment Agency sampling point TH-PKER0339 · 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
- 21 Jul 2026, 13:122 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 27 since 2 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Planned investigation (local monitoring)
- Where
- National Grid 437285, 175940As published, to the nearest 1 m. Open in a map
- River, by its own name
- Lambourn
- River, by the map
- River LambournPlaced on the river its name gives, 3 m from the line.
- Next gauge downstream
- Shaw On the River Lambourn · 16 km along the river (the path rests on a repair to the map)
- Nearest gauge upstream
- Eastbury Flood Control Structure On the River Lambourn · 4.4 km along the river
- Why it was sampled
- Monitoring (national agency policy) (24 samples)
Planned investigation (local monitoring) (3 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
91.8%
Sampled 21 Jul 2026, 2 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Jul 2026, 13:12 | 91.8 | 91.8% |
| 25 Jun 2026, 12:09 | 110.6 | 110.6% |
| 21 May 2026, 11:46 | 105.5 | 105.5% |
| 24 Mar 2026, 11:36 | 98.6 | 98.6% |
| 19 Feb 2026, 13:18 | 86.7 | 86.7% |
| 12 Jan 2026, 12:15 | 95.9 | 95.9% |
| 2 Dec 2025, 11:30 | 63.5 | 63.5% |
| 18 Nov 2025, 09:45 | 61.2 | 61.2% |
| 8 Oct 2025, 12:33 | 94.2 | 94.2% |
| 24 Sep 2025, 10:27 | 81.3 | 81.3% |
| 18 Aug 2025, 10:16 | 95.2 | 95.2% |
| 10 Jul 2025, 10:04 | 100.7 | 100.7% |
| 17 Jun 2025, 11:40 | 97.5 | 97.5% |
| 14 May 2025, 12:47 | 97.9 | 97.9% |
| 23 Apr 2025, 14:49 | 102.2 | 102.2% |
| 25 Mar 2025, 09:36 | 99.8 | 99.8% |
| 19 Feb 2025, 09:43 | 97.1 | 97.1% |
| 28 Jan 2025, 11:59 | 94.7 | 94.7% |
| 13 Dec 2024, 09:27 | 93.5 | 93.5% |
| 29 Nov 2024, 11:47 | 93.5 | 93.5% |
| 17 Oct 2024, 10:08 | 91.5 | 91.5% |
| 23 Sep 2024, 09:16 | 82 | 82% |
| 21 Aug 2024, 09:54 | 97.2 | 97.2% |
| 19 Jul 2024, 14:05 | 105.1 | 105.1% |
| 24 Jun 2024, 10:51 | 96.4 | 96.4% |
| 10 Jan 2024, 11:27 | 91.1 | 91.1% |
| 2 Oct 2023, 14:13 | 71.8 | 71.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.4 mg/l
Sampled 21 Jul 2026, 2 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Jul 2026, 13:12 | 9.4 | 9.4 mg/l |
| 25 Jun 2026, 12:09 | 11 | 11 mg/l |
| 21 May 2026, 11:46 | 11.3 | 11.3 mg/l |
| 24 Mar 2026, 11:36 | 11 | 11 mg/l |
| 19 Feb 2026, 13:18 | 10 | 10 mg/l |
| 12 Jan 2026, 12:15 | 10.8 | 10.8 mg/l |
| 2 Dec 2025, 11:30 | 7.66 | 7.66 mg/l |
| 18 Nov 2025, 09:45 | 8.1 | 8.1 mg/l |
| 8 Oct 2025, 12:33 | 9.81 | 9.81 mg/l |
| 24 Sep 2025, 10:27 | 8.86 | 8.86 mg/l |
| 18 Aug 2025, 10:16 | 9.79 | 9.79 mg/l |
| 10 Jul 2025, 10:04 | 10.2 | 10.2 mg/l |
| 17 Jun 2025, 11:40 | 10.1 | 10.1 mg/l |
| 14 May 2025, 12:47 | 10.2 | 10.2 mg/l |
| 23 Apr 2025, 14:49 | 11.2 | 11.2 mg/l |
| 25 Mar 2025, 09:36 | 11.2 | 11.2 mg/l |
| 19 Feb 2025, 09:43 | 11.5 | 11.5 mg/l |
| 28 Jan 2025, 11:59 | 10.7 | 10.7 mg/l |
| 13 Dec 2024, 09:27 | 10.6 | 10.6 mg/l |
| 29 Nov 2024, 11:47 | 10.6 | 10.6 mg/l |
| 17 Oct 2024, 10:08 | 9.93 | 9.93 mg/l |
| 23 Sep 2024, 09:16 | 8.62 | 8.62 mg/l |
| 21 Aug 2024, 09:54 | 10.5 | 10.5 mg/l |
| 19 Jul 2024, 14:05 | 10.6 | 10.6 mg/l |
| 24 Jun 2024, 10:51 | 10.3 | 10.3 mg/l |
| 10 Jan 2024, 11:27 | 10.8 | 10.8 mg/l |
| 2 Oct 2023, 14:13 | 7.55 | 7.55 mg/l |
Water temperature
code 0076 · °C
14.2 °C
Sampled 21 Jul 2026, 2 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Jul 2026, 13:12 | 14.2 | 14.2 °C |
| 25 Jun 2026, 12:09 | 15.6 | 15.6 °C |
| 21 May 2026, 11:46 | 12.3 | 12.3 °C |
| 24 Mar 2026, 11:36 | 10.6 | 10.6 °C |
| 19 Feb 2026, 13:18 | 9 | 9 °C |
| 12 Jan 2026, 12:15 | 10.2 | 10.2 °C |
| 2 Dec 2025, 11:30 | 7.2 | 7.2 °C |
| 18 Nov 2025, 09:45 | 3.6 | 3.6 °C |
| 8 Oct 2025, 12:33 | 13.4 | 13.4 °C |
| 24 Sep 2025, 10:27 | 11.4 | 11.4 °C |
| 18 Aug 2025, 10:16 | 14 | 14 °C |
| 10 Jul 2025, 10:04 | 14.7 | 14.7 °C |
| 17 Jun 2025, 11:40 | 13.7 | 13.7 °C |
| 14 May 2025, 12:47 | 13.5 | 13.5 °C |
| 23 Apr 2025, 14:49 | 11.1 | 11.1 °C |
| 25 Mar 2025, 09:36 | 10.1 | 10.1 °C |
| 19 Feb 2025, 09:43 | 8.1 | 8.1 °C |
| 28 Jan 2025, 11:59 | 9.8 | 9.8 °C |
| 13 Dec 2024, 09:27 | 9.7 | 9.7 °C |
| 29 Nov 2024, 11:47 | 9.9 | 9.9 °C |
| 17 Oct 2024, 10:08 | 11.6 | 11.6 °C |
| 23 Sep 2024, 09:16 | 13 | 13 °C |
| 21 Aug 2024, 09:54 | 11.7 | 11.7 °C |
| 19 Jul 2024, 14:05 | 15 | 15 °C |
| 24 Jun 2024, 10:51 | 12.4 | 12.4 °C |
| 10 Jan 2024, 11:27 | 7.9 | 7.9 °C |
| 2 Oct 2023, 14:13 | 13 | 13 °C |
pH
code 0061
7.75
Sampled 21 Jul 2026, 2 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Jul 2026, 13:12 | 7.75 | 7.75 |
| 25 Jun 2026, 12:09 | 7.89 | 7.89 |
| 21 May 2026, 11:46 | 8.16 | 8.16 |
| 24 Mar 2026, 11:36 | 7.66 | 7.66 |
| 19 Feb 2026, 13:18 | 7.69 | 7.69 |
| 12 Jan 2026, 12:15 | 7.54 | 7.54 |
| 2 Dec 2025, 11:30 | 7.91 | 7.91 |
| 18 Nov 2025, 09:45 | 7.57 | 7.57 |
| 8 Oct 2025, 12:33 | 7.47 | 7.47 |
| 24 Sep 2025, 10:27 | 7.34 | 7.34 |
| 18 Aug 2025, 10:16 | 7.96 | 7.96 |
| 10 Jul 2025, 10:04 | 7.9 | 7.9 |
| 17 Jun 2025, 11:40 | 7.92 | 7.92 |
| 14 May 2025, 12:47 | 7.89 | 7.89 |
| 23 Apr 2025, 14:49 | 8 | 8 |
| 25 Mar 2025, 09:36 | 7.76 | 7.76 |
| 19 Feb 2025, 09:43 | 7.71 | 7.71 |
| 28 Jan 2025, 11:59 | 7.66 | 7.66 |
| 13 Dec 2024, 09:27 | 7.71 | 7.71 |
| 29 Nov 2024, 11:47 | 7.72 | 7.72 |
| 17 Oct 2024, 10:08 | 7.76 | 7.76 |
| 23 Sep 2024, 09:16 | 7.61 | 7.61 |
| 21 Aug 2024, 09:54 | 7.88 | 7.88 |
| 19 Jul 2024, 14:05 | 7.79 | 7.79 |
| 24 Jun 2024, 10:51 | 7.76 | 7.76 |
| 10 Jan 2024, 11:27 | 7.73 | 7.73 |
| 2 Oct 2023, 14:13 | 7.44 | 7.44 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 21 Jul 2026, 2 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Jul 2026, 13:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Jun 2026, 12:09 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 May 2026, 11:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Mar 2026, 11:36 | 0.053 | 0.053 mg/l |
| 19 Feb 2026, 13:18 | 0.035 | 0.035 mg/l |
| 12 Jan 2026, 12:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Dec 2025, 11:30 | 0.13 | 0.13 mg/l |
| 18 Nov 2025, 09:45 | 0.055 | 0.055 mg/l |
| 8 Oct 2025, 12:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Sep 2025, 10:27 | 0.055 | 0.055 mg/l |
| 18 Aug 2025, 10:16 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Jul 2025, 10:04 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jun 2025, 11:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 May 2025, 12:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Apr 2025, 14:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Mar 2025, 09:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Feb 2025, 09:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Jan 2025, 11:59 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Dec 2024, 09:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 Nov 2024, 11:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Oct 2024, 10:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Sep 2024, 09:16 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Aug 2024, 09:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Jul 2024, 14:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Jun 2024, 10:51 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Jan 2024, 11:27 | 0.036 | 0.036 mg/l |
| 2 Oct 2023, 14:13 | 0.03 | 0.03 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
8.99 mg/l
Sampled 21 Jul 2026, 2 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Jul 2026, 13:12 | 8.99 | 8.99 mg/l |
| 25 Jun 2026, 12:09 | 9.39 | 9.39 mg/l |
| 21 May 2026, 11:46 | 9.5 | 9.5 mg/l |
| 24 Mar 2026, 11:36 | 9.58 | 9.58 mg/l |
| 19 Feb 2026, 13:18 | 9.49 | 9.49 mg/l |
| 12 Jan 2026, 12:15 | 8.8 | 8.8 mg/l |
| 2 Dec 2025, 11:30 | 0.216 | 0.216 mg/l |
| 18 Nov 2025, 09:45 | 7.56 | 7.56 mg/l |
| 8 Oct 2025, 12:33 | 8.79 | 8.79 mg/l |
| 24 Sep 2025, 10:27 | 9.39 | 9.39 mg/l |
| 18 Aug 2025, 10:16 | 8.68 | 8.68 mg/l |
| 10 Jul 2025, 10:04 | 9.69 | 9.69 mg/l |
| 17 Jun 2025, 11:40 | 9.9 | 9.9 mg/l |
| 14 May 2025, 12:47 | 9.7 | 9.7 mg/l |
| 23 Apr 2025, 14:49 | 9.8 | 9.8 mg/l |
| 25 Mar 2025, 09:36 | 9.4 | 9.4 mg/l |
| 19 Feb 2025, 09:43 | 9.6 | 9.6 mg/l |
| 28 Jan 2025, 11:59 | 0.426 | 0.426 mg/l |
| 13 Dec 2024, 09:27 | 9.3 | 9.3 mg/l |
| 29 Nov 2024, 11:47 | 9.39 | 9.39 mg/l |
| 17 Oct 2024, 10:08 | 8.58 | 8.58 mg/l |
| 23 Sep 2024, 09:16 | 7.28 | 7.28 mg/l |
| 21 Aug 2024, 09:54 | 9.39 | 9.39 mg/l |
| 19 Jul 2024, 14:05 | 9.19 | 9.19 mg/l |
| 24 Jun 2024, 10:51 | 9.19 | 9.19 mg/l |
| 10 Jan 2024, 11:27 | 8.89 | 8.89 mg/l |
| 2 Oct 2023, 14:13 | 8.36 | 8.36 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.035 mg/l
Sampled 21 Jul 2026, 2 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Jul 2026, 13:12 | 0.035 | 0.035 mg/l |
| 25 Jun 2026, 12:09 | 0.027 | 0.027 mg/l |
| 21 May 2026, 11:46 | 0.038 | 0.038 mg/l |
| 24 Mar 2026, 11:36 | 0.073 | 0.073 mg/l |
| 19 Feb 2026, 13:18 | 0.09 | 0.09 mg/l |
| 12 Jan 2026, 12:15 | 0.069 | 0.069 mg/l |
| 2 Dec 2025, 11:30 | 0.18 | 0.18 mg/l |
| 18 Nov 2025, 09:45 | 0.079 | 0.079 mg/l |
| 8 Oct 2025, 12:33 | 0.077 | 0.077 mg/l |
| 24 Sep 2025, 10:27 | 0.094 | 0.094 mg/l |
| 18 Aug 2025, 10:16 | 0.054 | 0.054 mg/l |
| 10 Jul 2025, 10:04 | 0.042 | 0.042 mg/l |
| 17 Jun 2025, 11:40 | 0.04 | 0.04 mg/l |
| 14 May 2025, 12:47 | 0.045 | 0.045 mg/l |
| 23 Apr 2025, 14:49 | 0.044 | 0.044 mg/l |
| 25 Mar 2025, 09:36 | 0.057 | 0.057 mg/l |
| 19 Feb 2025, 09:43 | 0.064 | 0.064 mg/l |
| 28 Jan 2025, 11:59 | <0.01 | below 0.01 mg/l (not detected above this) |
| 13 Dec 2024, 09:27 | 0.049 | 0.049 mg/l |
| 29 Nov 2024, 11:47 | 0.05 | 0.05 mg/l |
| 17 Oct 2024, 10:08 | 0.044 | 0.044 mg/l |
| 23 Sep 2024, 09:16 | 0.068 | 0.068 mg/l |
| 21 Aug 2024, 09:54 | 0.031 | 0.031 mg/l |
| 19 Jul 2024, 14:05 | 0.031 | 0.031 mg/l |
| 24 Jun 2024, 10:51 | 0.045 | 0.045 mg/l |
| 10 Jan 2024, 11:27 | 0.12 | 0.12 mg/l |
| 2 Oct 2023, 14:13 | 0.056 | 0.056 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
558 µS/cm
Sampled 21 Jul 2026, 2 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Jul 2026, 13:12 | 558 | 558 µS/cm |
| 25 Jun 2026, 12:09 | 571 | 571 µS/cm |
| 21 May 2026, 11:46 | 577 | 577 µS/cm |
| 24 Mar 2026, 11:36 | 591 | 591 µS/cm |
| 19 Feb 2026, 13:18 | 581 | 581 µS/cm |
| 12 Jan 2026, 12:15 | 592 | 592 µS/cm |
| 2 Dec 2025, 11:30 | 201 | 201 µS/cm |
| 18 Nov 2025, 09:45 | 569 | 569 µS/cm |
| 8 Oct 2025, 12:33 | 555 | 555 µS/cm |
| 24 Sep 2025, 10:27 | 575 | 575 µS/cm |
| 18 Aug 2025, 10:16 | 571 | 571 µS/cm |
| 10 Jul 2025, 10:04 | 565 | 565 µS/cm |
| 17 Jun 2025, 11:40 | 560 | 560 µS/cm |
| 14 May 2025, 12:47 | 571 | 571 µS/cm |
| 23 Apr 2025, 14:49 | 579 | 579 µS/cm |
| 25 Mar 2025, 09:36 | 578 | 578 µS/cm |
| 19 Feb 2025, 09:43 | 579 | 579 µS/cm |
| 28 Jan 2025, 11:59 | 556 | 556 µS/cm |
| 13 Dec 2024, 09:27 | 574 | 574 µS/cm |
| 29 Nov 2024, 11:47 | 579 | 579 µS/cm |
| 17 Oct 2024, 10:08 | 558 | 558 µS/cm |
| 23 Sep 2024, 09:16 | 465 | 465 µS/cm |
| 21 Aug 2024, 09:54 | 555 | 555 µS/cm |
| 19 Jul 2024, 14:05 | 572 | 572 µS/cm |
| 24 Jun 2024, 10:51 | 581 | 581 µS/cm |
| 10 Jan 2024, 11:27 | 611 | 611 µS/cm |
| 2 Oct 2023, 14:13 | 573 | 573 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 | 27 | Oct 2023 – Jul 2026 | 91.8% 21 Jul 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 27 | Oct 2023 – Jul 2026 | 9.4 mg/l 21 Jul 2026 |
| Temperature of Water 0076 | River water | 27 | Oct 2023 – Jul 2026 | 14.2 °C 21 Jul 2026 |
| pH 0061 | River water | 27 | Oct 2023 – Jul 2026 | 7.75 21 Jul 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 27 | Oct 2023 – Jul 2026 | below 0.03 mg/l 21 Jul 2026 |
| Nitrate as N 0117 | River water | 27 | Oct 2023 – Jul 2026 | 8.99 mg/l 21 Jul 2026 |
| Orthophosphate, reactive as P 0180 | River water | 27 | Oct 2023 – Jul 2026 | 0.035 mg/l 21 Jul 2026 |
| Conductivity at 25 C 0077 | River water | 27 | Oct 2023 – Jul 2026 | 558 µS/cm 21 Jul 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 27 | Oct 2023 – Jul 2026 | 220 mg/l 21 Jul 2026 |
| Ammonia un-ionised as N 0119 | River water | 27 | Oct 2023 – Jul 2026 | below 0.00042 mg/l 21 Jul 2026 |
| BOD : 5 Day ATU 0085 | River water | 24 | Jun 2024 – Jun 2026 | below 3 mg/l 25 Jun 2026 |
| Nitrite as N 0118 | River water | 27 | Oct 2023 – Jul 2026 | 0.0078 mg/l 21 Jul 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 27 | Oct 2023 – Jul 2026 | 9 mg/l 21 Jul 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.