River Arrow Outlet L Bittel Reservoir
EA name: RIVER ARROW OUTLET L BITTEL RES (also listed as “RIVER ARROW OUTLET L BITTEL RESERVOIR”)
Environment Agency sampling point MD-08023980 · 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
- 4 Jun 2026, 11:214 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 23 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 401975, 273996As published, to the nearest 1 m. Open in a map
- River, by its own name
- Arrow
- River, by the map
- River ArrowPlaced on the river its name gives, 6 m from the line.
- Next gauge downstream
- Studley On the River Arrow · 15 km along the river (the path rests on a repair to the map)
- Why it was sampled
- Monitoring (national agency policy) (18 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
76.7%
Sampled 4 Jun 2026, 4 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Jun 2026, 11:21 | 76.7 | 76.7% |
| 12 Feb 2026, 13:19 | 93.5 | 93.5% |
| 9 Oct 2025, 10:12 | 99.6 | 99.6% |
| 23 Jul 2025, 12:24 | 113.3 | 113.3% |
| 26 Feb 2025, 12:52 | 107.5 | 107.5% |
| 23 Jan 2025, 10:06 | 85.5 | 85.5% |
| 17 Dec 2024, 12:00 | 93.1 | 93.1% |
| 16 Oct 2024, 09:52 | 87.1 | 87.1% |
| 19 Sep 2024, 14:31 | 97.8 | 97.8% |
| 17 Jun 2024, 10:47 | 97 | 97% |
| 15 May 2024, 07:27 | 77.7 | 77.7% |
| 16 Apr 2024, 10:21 | 106.7 | 106.7% |
| 22 Mar 2024, 08:46 | 107.5 | 107.5% |
| 23 Feb 2024, 11:25 | 85.9 | 85.9% |
| 30 Jan 2024, 15:00 | 90.3 | 90.3% |
| 12 Dec 2023, 11:13 | 88.6 | 88.6% |
| 22 Nov 2023, 10:27 | 82.7 | 82.7% |
| 23 Oct 2023, 11:32 | 79.8 | 79.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.26 mg/l
Sampled 4 Jun 2026, 4 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Jun 2026, 11:21 | 7.26 | 7.26 mg/l |
| 12 Feb 2026, 13:19 | 11.2 | 11.2 mg/l |
| 9 Oct 2025, 10:12 | 10.5 | 10.5 mg/l |
| 23 Jul 2025, 12:24 | 10.2 | 10.2 mg/l |
| 26 Feb 2025, 12:52 | 13 | 13 mg/l |
| 23 Jan 2025, 10:06 | 11.1 | 11.1 mg/l |
| 17 Dec 2024, 12:00 | 11.1 | 11.1 mg/l |
| 16 Oct 2024, 09:52 | 9.24 | 9.24 mg/l |
| 19 Sep 2024, 14:31 | 9.59 | 9.59 mg/l |
| 17 Jun 2024, 10:47 | 9.97 | 9.97 mg/l |
| 15 May 2024, 07:27 | 7.58 | 7.58 mg/l |
| 16 Apr 2024, 10:21 | 11.7 | 11.7 mg/l |
| 22 Mar 2024, 08:46 | 12 | 12 mg/l |
| 23 Feb 2024, 11:25 | 10.1 | 10.1 mg/l |
| 30 Jan 2024, 15:00 | 11.1 | 11.1 mg/l |
| 12 Dec 2023, 11:13 | 10.9 | 10.9 mg/l |
| 22 Nov 2023, 10:27 | 9.73 | 9.73 mg/l |
| 23 Oct 2023, 11:32 | 8.66 | 8.66 mg/l |
Water temperature
code 0076 · °C
17.9 °C
Sampled 4 Jun 2026, 4 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Jun 2026, 11:21 | 17.9 | 17.9 °C |
| 12 Feb 2026, 13:19 | 7.4 | 7.4 °C |
| 9 Oct 2025, 10:12 | 12.8 | 12.8 °C |
| 23 Jul 2025, 12:24 | 20.2 | 20.2 °C |
| 26 Feb 2025, 12:52 | 7.2 | 7.2 °C |
| 23 Jan 2025, 10:06 | 4.4 | 4.4 °C |
| 17 Dec 2024, 12:00 | 7.8 | 7.8 °C |
| 16 Oct 2024, 09:52 | 12.6 | 12.6 °C |
| 19 Sep 2024, 14:31 | 16.2 | 16.2 °C |
| 17 Jun 2024, 10:47 | 14 | 14 °C |
| 15 May 2024, 07:27 | 16.4 | 16.4 °C |
| 16 Apr 2024, 10:21 | 11 | 11 °C |
| 22 Mar 2024, 08:46 | 10.4 | 10.4 °C |
| 23 Feb 2024, 11:25 | 8.3 | 8.3 °C |
| 30 Jan 2024, 15:00 | 6.5 | 6.5 °C |
| 12 Dec 2023, 11:13 | 6.3 | 6.3 °C |
| 22 Nov 2023, 10:27 | 8.2 | 8.2 °C |
| 23 Oct 2023, 11:32 | 11.6 | 11.6 °C |
pH
code 0061
7.85
Sampled 4 Jun 2026, 4 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Jun 2026, 11:21 | 7.85 | 7.85 |
| 12 Feb 2026, 13:19 | 8.02 | 8.02 |
| 9 Oct 2025, 10:12 | 8.52 | 8.52 |
| 23 Jul 2025, 12:24 | 8.73 | 8.73 |
| 26 Feb 2025, 12:52 | 8.36 | 8.36 |
| 23 Jan 2025, 10:06 | 7.83 | 7.83 |
| 17 Dec 2024, 12:00 | 8.03 | 8.03 |
| 16 Oct 2024, 09:52 | 7.54 | 7.54 |
| 19 Sep 2024, 14:31 | 8.88 | 8.88 |
| 17 Jun 2024, 10:47 | 7.89 | 7.89 |
| 15 May 2024, 07:27 | 8.16 | 8.16 |
| 16 Apr 2024, 10:21 | 8.9 | 8.9 |
| 22 Mar 2024, 08:46 | 8.39 | 8.39 |
| 23 Feb 2024, 11:25 | 7.94 | 7.94 |
| 30 Jan 2024, 15:00 | 7.98 | 7.98 |
| 12 Dec 2023, 11:13 | 7.73 | 7.73 |
| 22 Nov 2023, 10:27 | 7.74 | 7.74 |
| 23 Oct 2023, 11:32 | 7.32 | 7.32 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.18 mg/l
Sampled 4 Jun 2026, 4 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Jun 2026, 11:21 | 0.18 | 0.18 mg/l |
| 12 Feb 2026, 13:19 | 0.07 | 0.07 mg/l |
| 9 Oct 2025, 10:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Jul 2025, 12:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Feb 2025, 12:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Jan 2025, 10:06 | 0.11 | 0.11 mg/l |
| 17 Dec 2024, 12:00 | 0.18 | 0.18 mg/l |
| 16 Oct 2024, 09:52 | 0.12 | 0.12 mg/l |
| 19 Sep 2024, 14:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jun 2024, 10:47 | 0.06 | 0.06 mg/l |
| 15 May 2024, 07:27 | 0.24 | 0.24 mg/l |
| 16 Apr 2024, 10:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Mar 2024, 08:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Feb 2024, 11:25 | 0.054 | 0.054 mg/l |
| 30 Jan 2024, 15:00 | 0.073 | 0.073 mg/l |
| 12 Dec 2023, 11:13 | 0.1 | 0.1 mg/l |
| 22 Nov 2023, 10:27 | 0.054 | 0.054 mg/l |
| 23 Oct 2023, 11:32 | 0.074 | 0.074 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
below 0.196 mg/l (not detected above this)
Sampled 4 Jun 2026, 4 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Jun 2026, 11:21 | <0.196 | below 0.196 mg/l (not detected above this) |
| 12 Feb 2026, 13:19 | 1.39 | 1.39 mg/l |
| 9 Oct 2025, 10:12 | <0.196 | below 0.196 mg/l (not detected above this) |
| 23 Jul 2025, 12:24 | <0.196 | below 0.196 mg/l (not detected above this) |
| 26 Feb 2025, 12:52 | 1.69 | 1.69 mg/l |
| 23 Jan 2025, 10:06 | 1.89 | 1.89 mg/l |
| 17 Dec 2024, 12:00 | 1.58 | 1.58 mg/l |
| 16 Oct 2024, 09:52 | 0.594 | 0.594 mg/l |
| 19 Sep 2024, 14:31 | <0.196 | below 0.196 mg/l (not detected above this) |
| 17 Jun 2024, 10:47 | 0.645 | 0.645 mg/l |
| 15 May 2024, 07:27 | 0.315 | 0.315 mg/l |
| 16 Apr 2024, 10:21 | 0.667 | 0.667 mg/l |
| 22 Mar 2024, 08:46 | 1.29 | 1.29 mg/l |
| 23 Feb 2024, 11:25 | 1.49 | 1.49 mg/l |
| 30 Jan 2024, 15:00 | 1.69 | 1.69 mg/l |
| 12 Dec 2023, 11:13 | 1.48 | 1.48 mg/l |
| 22 Nov 2023, 10:27 | 0.78 | 0.78 mg/l |
| 23 Oct 2023, 11:32 | 0.676 | 0.676 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.14 mg/l
Sampled 4 Jun 2026, 4 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Jun 2026, 11:21 | 0.14 | 0.14 mg/l |
| 12 Feb 2026, 13:19 | 0.054 | 0.054 mg/l |
| 9 Oct 2025, 10:12 | 0.028 | 0.028 mg/l |
| 23 Jul 2025, 12:24 | 0.028 | 0.028 mg/l |
| 26 Feb 2025, 12:52 | 0.025 | 0.025 mg/l |
| 23 Jan 2025, 10:06 | 0.078 | 0.078 mg/l |
| 17 Dec 2024, 12:00 | 0.078 | 0.078 mg/l |
| 16 Oct 2024, 09:52 | 0.041 | 0.041 mg/l |
| 19 Sep 2024, 14:31 | 0.041 | 0.041 mg/l |
| 17 Jun 2024, 10:47 | 0.069 | 0.069 mg/l |
| 15 May 2024, 07:27 | 0.053 | 0.053 mg/l |
| 16 Apr 2024, 10:21 | <0.01 | below 0.01 mg/l (not detected above this) |
| 22 Mar 2024, 08:46 | 0.011 | 0.011 mg/l |
| 23 Feb 2024, 11:25 | 0.058 | 0.058 mg/l |
| 30 Jan 2024, 15:00 | 0.065 | 0.065 mg/l |
| 12 Dec 2023, 11:13 | 0.084 | 0.084 mg/l |
| 22 Nov 2023, 10:27 | 0.039 | 0.039 mg/l |
| 23 Oct 2023, 11:32 | 0.14 | 0.14 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
355 µS/cm
Sampled 4 Jun 2026, 4 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Jun 2026, 11:21 | 355 | 355 µS/cm |
| 12 Feb 2026, 13:19 | 284 | 284 µS/cm |
| 9 Oct 2025, 10:12 | 374 | 374 µS/cm |
| 23 Jul 2025, 12:24 | 385 | 385 µS/cm |
| 26 Feb 2025, 12:52 | 381 | 381 µS/cm |
| 23 Jan 2025, 10:06 | 361 | 361 µS/cm |
| 17 Dec 2024, 12:00 | 367 | 367 µS/cm |
| 16 Oct 2024, 09:52 | 314 | 314 µS/cm |
| 19 Sep 2024, 14:31 | 313 | 313 µS/cm |
| 17 Jun 2024, 10:47 | 403 | 403 µS/cm |
| 15 May 2024, 07:27 | 344 | 344 µS/cm |
| 16 Apr 2024, 10:21 | 313 | 313 µS/cm |
| 22 Mar 2024, 08:46 | 312 | 312 µS/cm |
| 23 Feb 2024, 11:25 | 275 | 275 µS/cm |
| 30 Jan 2024, 15:00 | 323 | 323 µS/cm |
| 12 Dec 2023, 11:13 | 311 | 311 µS/cm |
| 22 Nov 2023, 10:27 | 338 | 338 µS/cm |
| 23 Oct 2023, 11:32 | 310 | 310 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 – Jun 2026 | 76.7% 4 Jun 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 18 | Oct 2023 – Jun 2026 | 7.26 mg/l 4 Jun 2026 |
| Temperature of Water 0076 | River water | 18 | Oct 2023 – Jun 2026 | 17.9 °C 4 Jun 2026 |
| pH 0061 | River water | 18 | Oct 2023 – Jun 2026 | 7.85 4 Jun 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 18 | Oct 2023 – Jun 2026 | 0.18 mg/l 4 Jun 2026 |
| Nitrate as N 0117 | River water | 18 | Oct 2023 – Jun 2026 | below 0.196 mg/l 4 Jun 2026 |
| Orthophosphate, reactive as P 0180 | River water | 18 | Oct 2023 – Jun 2026 | 0.14 mg/l 4 Jun 2026 |
| Conductivity at 25 C 0077 | River water | 18 | Oct 2023 – Jun 2026 | 355 µS/cm 4 Jun 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 18 | Oct 2023 – Jun 2026 | 140 mg/l 4 Jun 2026 |
| Ammonia un-ionised as N 0119 | River water | 18 | Oct 2023 – Jun 2026 | 0.00417 mg/l 4 Jun 2026 |
| BOD : 5 Day ATU 0085 | River water | 14 | Feb 2024 – Jun 2026 | 1.6 mg/l 4 Jun 2026 |
| Nitrite as N 0118 | River water | 18 | Oct 2023 – Jun 2026 | below 0.004 mg/l 4 Jun 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 18 | Oct 2023 – Jun 2026 | below 0.2 mg/l 4 Jun 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.