River Rea - Cannon Hill Park
EA name: RIVER REA - CANNON HILL PARK
Environment Agency sampling point MD-64498240 · 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
- 19 May 2026, 11:085 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
- 19 since 18 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 406653, 283930As published, to the nearest 1 m. Open in a map
- River, by its own name
- Rea
- River, by the map
- River ReaPlaced on the river its name gives, 1 m from the line.
- Next gauge downstream
- Calthorpe Park On the River Rea · 0.9 km along the river
- Nearest gauge upstream
- Selly Park On the River Rea · 2.3 km along the river
- Why it was sampled
- Monitoring (national agency policy) (19 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
95.5%
Sampled 19 May 2026, 5 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 19 May 2026, 11:08 | 95.5 | 95.5% |
| 14 Jan 2026, 10:24 | 78.7 | 78.7% |
| 21 Oct 2025, 12:55 | 98 | 98% |
| 25 Jul 2025, 10:52 | 103.4 | 103.4% |
| 4 Mar 2025, 09:42 | 99.8 | 99.8% |
| 18 Feb 2025, 11:08 | 104.5 | 104.5% |
| 4 Feb 2025, 09:14 | 99.2 | 99.2% |
| 21 Oct 2024, 11:36 | 97 | 97% |
| 23 Sep 2024, 11:52 | 94 | 94% |
| 28 Aug 2024, 08:42 | 98.3 | 98.3% |
| 23 May 2024, 08:15 | 97.4 | 97.4% |
| 16 Apr 2024, 07:26 | 95.2 | 95.2% |
| 22 Mar 2024, 13:31 | 121.8 | 121.8% |
| 29 Feb 2024, 11:25 | 94.6 | 94.6% |
| 29 Jan 2024, 12:09 | 100.3 | 100.3% |
| 19 Dec 2023, 10:25 | 93 | 93% |
| 28 Nov 2023, 11:20 | 89.1 | 89.1% |
| 24 Oct 2023, 12:06 | 91 | 91% |
| 18 Oct 2023, 09:15 | 96 | 96% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.2 mg/l
Sampled 19 May 2026, 5 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 19 May 2026, 11:08 | 10.2 | 10.2 mg/l |
| 14 Jan 2026, 10:24 | 10.8 | 10.8 mg/l |
| 21 Oct 2025, 12:55 | 10.3 | 10.3 mg/l |
| 25 Jul 2025, 10:52 | 9.95 | 9.95 mg/l |
| 4 Mar 2025, 09:42 | 12.8 | 12.8 mg/l |
| 18 Feb 2025, 11:08 | 14.1 | 14.1 mg/l |
| 4 Feb 2025, 09:14 | 12.3 | 12.3 mg/l |
| 21 Oct 2024, 11:36 | 10.4 | 10.4 mg/l |
| 23 Sep 2024, 11:52 | 9.66 | 9.66 mg/l |
| 28 Aug 2024, 08:42 | 9.84 | 9.84 mg/l |
| 23 May 2024, 08:15 | 10.2 | 10.2 mg/l |
| 16 Apr 2024, 07:26 | 11 | 11 mg/l |
| 22 Mar 2024, 13:31 | 13.3 | 13.3 mg/l |
| 29 Feb 2024, 11:25 | 11 | 11 mg/l |
| 29 Jan 2024, 12:09 | 11.2 | 11.2 mg/l |
| 19 Dec 2023, 10:25 | 10.4 | 10.4 mg/l |
| 28 Nov 2023, 11:20 | 10.6 | 10.6 mg/l |
| 24 Oct 2023, 12:06 | 9.78 | 9.78 mg/l |
| 18 Oct 2023, 09:15 | 10.5 | 10.5 mg/l |
Water temperature
code 0076 · °C
12.5 °C
Sampled 19 May 2026, 5 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 19 May 2026, 11:08 | 12.5 | 12.5 °C |
| 14 Jan 2026, 10:24 | 2.3 | 2.3 °C |
| 21 Oct 2025, 12:55 | 13 | 13 °C |
| 25 Jul 2025, 10:52 | 17.1 | 17.1 °C |
| 4 Mar 2025, 09:42 | 4.9 | 4.9 °C |
| 18 Feb 2025, 11:08 | 2.9 | 2.9 °C |
| 4 Feb 2025, 09:14 | 6.1 | 6.1 °C |
| 21 Oct 2024, 11:36 | 12.3 | 12.3 °C |
| 23 Sep 2024, 11:52 | 14 | 14 °C |
| 28 Aug 2024, 08:42 | 15.2 | 15.2 °C |
| 23 May 2024, 08:15 | 13.3 | 13.3 °C |
| 16 Apr 2024, 07:26 | 9.1 | 9.1 °C |
| 22 Mar 2024, 13:31 | 11.4 | 11.4 °C |
| 29 Feb 2024, 11:25 | 8.7 | 8.7 °C |
| 29 Jan 2024, 12:09 | 10.3 | 10.3 °C |
| 19 Dec 2023, 10:25 | 10.2 | 10.2 °C |
| 28 Nov 2023, 11:20 | 7.8 | 7.8 °C |
| 24 Oct 2023, 12:06 | 12 | 12 °C |
| 18 Oct 2023, 09:15 | 11.1 | 11.1 °C |
pH
code 0061
7.85
Sampled 19 May 2026, 5 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 19 May 2026, 11:08 | 7.85 | 7.85 |
| 14 Jan 2026, 10:24 | 8.3 | 8.3 |
| 21 Oct 2025, 12:55 | 8.12 | 8.12 |
| 25 Jul 2025, 10:52 | 8.12 | 8.12 |
| 4 Mar 2025, 09:42 | 8.51 | 8.51 |
| 18 Feb 2025, 11:08 | 8.28 | 8.28 |
| 4 Feb 2025, 09:14 | 8.23 | 8.23 |
| 21 Oct 2024, 11:36 | 8.02 | 8.02 |
| 23 Sep 2024, 11:52 | 7.56 | 7.56 |
| 28 Aug 2024, 08:42 | 8.18 | 8.18 |
| 23 May 2024, 08:15 | 8.18 | 8.18 |
| 16 Apr 2024, 07:26 | 7.91 | 7.91 |
| 22 Mar 2024, 13:31 | 8.74 | 8.74 |
| 29 Feb 2024, 11:25 | 8.05 | 8.05 |
| 29 Jan 2024, 12:09 | 8.1 | 8.1 |
| 19 Dec 2023, 10:25 | 7.81 | 7.81 |
| 28 Nov 2023, 11:20 | 8.26 | 8.26 |
| 24 Oct 2023, 12:06 | 8.12 | 8.12 |
| 18 Oct 2023, 09:15 | 8.18 | 8.18 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 19 May 2026, 5 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 19 May 2026, 11:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Jan 2026, 10:24 | 0.075 | 0.075 mg/l |
| 21 Oct 2025, 12:55 | 0.032 | 0.032 mg/l |
| 25 Jul 2025, 10:52 | 0.061 | 0.061 mg/l |
| 4 Mar 2025, 09:42 | 0.03 | 0.03 mg/l |
| 18 Feb 2025, 11:08 | 0.049 | 0.049 mg/l |
| 4 Feb 2025, 09:14 | 0.071 | 0.071 mg/l |
| 21 Oct 2024, 11:36 | 0.082 | 0.082 mg/l |
| 23 Sep 2024, 11:52 | 0.24 | 0.24 mg/l |
| 28 Aug 2024, 08:42 | 0.039 | 0.039 mg/l |
| 23 May 2024, 08:15 | 0.089 | 0.089 mg/l |
| 16 Apr 2024, 07:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Mar 2024, 13:31 | 0.07 | 0.07 mg/l |
| 29 Feb 2024, 11:25 | 0.11 | 0.11 mg/l |
| 29 Jan 2024, 12:09 | 0.1 | 0.1 mg/l |
| 19 Dec 2023, 10:25 | 0.18 | 0.18 mg/l |
| 28 Nov 2023, 11:20 | 0.1 | 0.1 mg/l |
| 24 Oct 2023, 12:06 | 0.17 | 0.17 mg/l |
| 18 Oct 2023, 09:15 | 0.098 | 0.098 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.16 mg/l
Sampled 19 May 2026, 5 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 19 May 2026, 11:08 | 1.16 | 1.16 mg/l |
| 14 Jan 2026, 10:24 | 2.38 | 2.38 mg/l |
| 21 Oct 2025, 12:55 | 2.08 | 2.08 mg/l |
| 25 Jul 2025, 10:52 | 1.97 | 1.97 mg/l |
| 4 Mar 2025, 09:42 | 2.57 | 2.57 mg/l |
| 18 Feb 2025, 11:08 | 2.68 | 2.68 mg/l |
| 4 Feb 2025, 09:14 | 2.57 | 2.57 mg/l |
| 21 Oct 2024, 11:36 | 1.87 | 1.87 mg/l |
| 23 Sep 2024, 11:52 | 1.26 | 1.26 mg/l |
| 28 Aug 2024, 08:42 | 2.37 | 2.37 mg/l |
| 23 May 2024, 08:15 | 2.35 | 2.35 mg/l |
| 16 Apr 2024, 07:26 | 2.07 | 2.07 mg/l |
| 22 Mar 2024, 13:31 | 2.36 | 2.36 mg/l |
| 29 Feb 2024, 11:25 | 1.68 | 1.68 mg/l |
| 29 Jan 2024, 12:09 | 2.35 | 2.35 mg/l |
| 19 Dec 2023, 10:25 | 4.45 | 4.45 mg/l |
| 28 Nov 2023, 11:20 | 1.97 | 1.97 mg/l |
| 24 Oct 2023, 12:06 | 2.76 | 2.76 mg/l |
| 18 Oct 2023, 09:15 | 2.57 | 2.57 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.077 mg/l
Sampled 19 May 2026, 5 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 19 May 2026, 11:08 | 0.077 | 0.077 mg/l |
| 14 Jan 2026, 10:24 | 0.1 | 0.1 mg/l |
| 21 Oct 2025, 12:55 | 0.13 | 0.13 mg/l |
| 25 Jul 2025, 10:52 | 0.26 | 0.26 mg/l |
| 4 Mar 2025, 09:42 | 0.074 | 0.074 mg/l |
| 18 Feb 2025, 11:08 | 0.11 | 0.11 mg/l |
| 4 Feb 2025, 09:14 | 0.1 | 0.1 mg/l |
| 21 Oct 2024, 11:36 | 0.11 | 0.11 mg/l |
| 23 Sep 2024, 11:52 | 0.11 | 0.11 mg/l |
| 28 Aug 2024, 08:42 | 0.19 | 0.19 mg/l |
| 23 May 2024, 08:15 | 0.14 | 0.14 mg/l |
| 16 Apr 2024, 07:26 | 0.056 | 0.056 mg/l |
| 22 Mar 2024, 13:31 | 0.089 | 0.089 mg/l |
| 29 Feb 2024, 11:25 | 0.08 | 0.08 mg/l |
| 29 Jan 2024, 12:09 | 0.095 | 0.095 mg/l |
| 19 Dec 2023, 10:25 | 0.033 | 0.033 mg/l |
| 28 Nov 2023, 11:20 | 0.11 | 0.11 mg/l |
| 24 Oct 2023, 12:06 | 0.1 | 0.1 mg/l |
| 18 Oct 2023, 09:15 | 0.12 | 0.12 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
322 µS/cm
Sampled 19 May 2026, 5 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 19 May 2026, 11:08 | 322 | 322 µS/cm |
| 14 Jan 2026, 10:24 | 601 | 601 µS/cm |
| 21 Oct 2025, 12:55 | 495 | 495 µS/cm |
| 25 Jul 2025, 10:52 | 594 | 594 µS/cm |
| 4 Mar 2025, 09:42 | 636 | 636 µS/cm |
| 18 Feb 2025, 11:08 | 635 | 635 µS/cm |
| 4 Feb 2025, 09:14 | 614 | 614 µS/cm |
| 21 Oct 2024, 11:36 | 433 | 433 µS/cm |
| 23 Sep 2024, 11:52 | 205 | 205 µS/cm |
| 28 Aug 2024, 08:42 | 587 | 587 µS/cm |
| 23 May 2024, 08:15 | 428 | 428 µS/cm |
| 16 Apr 2024, 07:26 | 567 | 567 µS/cm |
| 22 Mar 2024, 13:31 | 600 | 600 µS/cm |
| 29 Feb 2024, 11:25 | 538 | 538 µS/cm |
| 29 Jan 2024, 12:09 | 615 | 615 µS/cm |
| 19 Dec 2023, 10:25 | 452 | 452 µS/cm |
| 28 Nov 2023, 11:20 | 524 | 524 µS/cm |
| 24 Oct 2023, 12:06 | 677 | 677 µS/cm |
| 18 Oct 2023, 09:15 | 616 | 616 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 | 19 | Oct 2023 – May 2026 | 95.5% 19 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 19 | Oct 2023 – May 2026 | 10.2 mg/l 19 May 2026 |
| Temperature of Water 0076 | River water | 19 | Oct 2023 – May 2026 | 12.5 °C 19 May 2026 |
| pH 0061 | River water | 19 | Oct 2023 – May 2026 | 7.85 19 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 19 | Oct 2023 – May 2026 | below 0.03 mg/l 19 May 2026 |
| Nitrate as N 0117 | River water | 19 | Oct 2023 – May 2026 | 1.16 mg/l 19 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 19 | Oct 2023 – May 2026 | 0.077 mg/l 19 May 2026 |
| Conductivity at 25 C 0077 | River water | 19 | Oct 2023 – May 2026 | 322 µS/cm 19 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 19 | Oct 2023 – May 2026 | 92 mg/l 19 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 19 | Oct 2023 – May 2026 | below 0.00047 mg/l 19 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 15 | Oct 2023 – May 2026 | 5 mg/l 19 May 2026 |
| Nitrite as N 0118 | River water | 19 | Oct 2023 – May 2026 | 0.041 mg/l 19 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 19 | Oct 2023 – May 2026 | 1.2 mg/l 19 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.