Mother Drain, upstream of Balby sewage treatment works, Bridon Wire
EA name: MOTHER DRAIN, US BALBY STW, BRIDON WIRE
Environment Agency sampling point MD-27300203 · 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
- 5 Aug 2026, 07:4757 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 30 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 457305, 401447As published, to the nearest 1 m. Open in a map
- River, by its own name
- Mother Drain
- River, by the map
- Not placedNo mapped watercourse within 500 m. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Planned investigation (local monitoring) (30 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
88.7%
Sampled 5 Aug 2026, 57 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 07:47 | 88.7 | 88.7% |
| 7 May 2026, 11:08 | 85.2 | 85.2% |
| 4 Feb 2026, 14:04 | 82.2 | 82.2% |
| 2 Dec 2025, 08:04 | 83.7 | 83.7% |
| 5 Nov 2025, 08:49 | 84.6 | 84.6% |
| 17 Oct 2025, 11:19 | 80.6 | 80.6% |
| 4 Sep 2025, 14:10 | 81.2 | 81.2% |
| 4 Aug 2025, 16:14 | 89.1 | 89.1% |
| 4 Jul 2025, 07:23 | 85.6 | 85.6% |
| 4 Jun 2025, 09:12 | 83.7 | 83.7% |
| 14 May 2025, 07:25 | 89.9 | 89.9% |
| 23 Apr 2025, 12:03 | 90.3 | 90.3% |
| 4 Mar 2025, 11:06 | 86.9 | 86.9% |
| 5 Feb 2025, 07:30 | 92.6 | 92.6% |
| 10 Jan 2025, 11:58 | 87.4 | 87.4% |
| 3 Dec 2024, 08:12 | 93.6 | 93.6% |
| 4 Nov 2024, 07:20 | 91 | 91% |
| 2 Oct 2024, 08:02 | 81.9 | 81.9% |
| 6 Sep 2024, 07:21 | 86.1 | 86.1% |
| 14 Aug 2024, 11:42 | 73.7 | 73.7% |
| 5 Jul 2024, 07:57 | 85.5 | 85.5% |
| 3 Jun 2024, 07:24 | 69.3 | 69.3% |
| 15 Mar 2024, 10:33 | 17.2 | 17.2% |
| 9 Feb 2024, 07:29 | 91.5 | 91.5% |
| 24 Jan 2024, 08:43 | 87.4 | 87.4% |
| 4 Dec 2023, 08:37 | 96.9 | 96.9% |
| 3 Nov 2023, 13:46 | 84.7 | 84.7% |
| 18 Oct 2023, 09:00 | 89.2 | 89.2% |
| 2 Oct 2023, 08:15 | 84.6 | 84.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.59 mg/l
Sampled 5 Aug 2026, 57 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 07:47 | 7.59 | 7.59 mg/l |
| 7 May 2026, 11:08 | 7.77 | 7.77 mg/l |
| 4 Feb 2026, 14:04 | 9.21 | 9.21 mg/l |
| 2 Dec 2025, 08:04 | 9.13 | 9.13 mg/l |
| 5 Nov 2025, 08:49 | 8.03 | 8.03 mg/l |
| 17 Oct 2025, 11:19 | 7.71 | 7.71 mg/l |
| 4 Sep 2025, 14:10 | 7.39 | 7.39 mg/l |
| 4 Aug 2025, 16:14 | 7.62 | 7.62 mg/l |
| 4 Jul 2025, 07:23 | 6.93 | 6.93 mg/l |
| 4 Jun 2025, 09:12 | 7.23 | 7.23 mg/l |
| 14 May 2025, 07:25 | 7.57 | 7.57 mg/l |
| 23 Apr 2025, 12:03 | 7.91 | 7.91 mg/l |
| 4 Mar 2025, 11:06 | 7.91 | 7.91 mg/l |
| 5 Feb 2025, 07:30 | 8.95 | 8.95 mg/l |
| 10 Jan 2025, 11:58 | 9.71 | 9.71 mg/l |
| 3 Dec 2024, 08:12 | 9.08 | 9.08 mg/l |
| 4 Nov 2024, 07:20 | 8.64 | 8.64 mg/l |
| 2 Oct 2024, 08:02 | 7.65 | 7.65 mg/l |
| 6 Sep 2024, 07:21 | 7.6 | 7.6 mg/l |
| 14 Aug 2024, 11:42 | 6.48 | 6.48 mg/l |
| 5 Jul 2024, 07:57 | 7.46 | 7.46 mg/l |
| 3 Jun 2024, 07:24 | 6.53 | 6.53 mg/l |
| 15 Mar 2024, 10:33 | 1.7 | 1.7 mg/l |
| 9 Feb 2024, 07:29 | 11.2 | 11.2 mg/l |
| 24 Jan 2024, 08:43 | 9.04 | 9.04 mg/l |
| 4 Dec 2023, 08:37 | 11.3 | 11.3 mg/l |
| 3 Nov 2023, 13:46 | 8.29 | 8.29 mg/l |
| 18 Oct 2023, 09:00 | 8.24 | 8.24 mg/l |
| 2 Oct 2023, 08:15 | 7.8 | 7.8 mg/l |
Water temperature
code 0076 · °C
22.9 °C
Sampled 5 Aug 2026, 57 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 07:47 | 22.9 | 22.9 °C |
| 7 May 2026, 11:08 | 19.6 | 19.6 °C |
| 4 Feb 2026, 14:04 | 10.2 | 10.2 °C |
| 2 Dec 2025, 08:04 | 11.4 | 11.4 °C |
| 5 Nov 2025, 08:49 | 17.7 | 17.7 °C |
| 17 Oct 2025, 11:19 | 17.4 | 17.4 °C |
| 4 Sep 2025, 14:10 | 19.8 | 19.8 °C |
| 4 Aug 2025, 16:14 | 23 | 23 °C |
| 4 Jul 2025, 07:23 | 26 | 26 °C |
| 4 Jun 2025, 09:12 | 22.5 | 22.5 °C |
| 14 May 2025, 07:25 | 23.8 | 23.8 °C |
| 23 Apr 2025, 12:03 | 21.8 | 21.8 °C |
| 4 Mar 2025, 11:06 | 19.8 | 19.8 °C |
| 5 Feb 2025, 07:30 | 16.8 | 16.8 °C |
| 10 Jan 2025, 11:58 | 10.6 | 10.6 °C |
| 3 Dec 2024, 08:12 | 16.7 | 16.7 °C |
| 4 Nov 2024, 07:20 | 17.7 | 17.7 °C |
| 2 Oct 2024, 08:02 | 18.5 | 18.5 °C |
| 6 Sep 2024, 07:21 | 21.4 | 21.4 °C |
| 14 Aug 2024, 11:42 | 21.5 | 21.5 °C |
| 5 Jul 2024, 07:57 | 22 | 22 °C |
| 3 Jun 2024, 07:24 | 18.1 | 18.1 °C |
| 15 Mar 2024, 10:33 | 15.8 | 15.8 °C |
| 9 Feb 2024, 07:29 | 6.5 | 6.5 °C |
| 24 Jan 2024, 08:43 | 13.7 | 13.7 °C |
| 4 Dec 2023, 08:37 | 8.5 | 8.5 °C |
| 3 Nov 2023, 13:46 | 16.2 | 16.2 °C |
| 18 Oct 2023, 09:00 | 19 | 19 °C |
| 2 Oct 2023, 08:15 | 19.2 | 19.2 °C |
pH
code 0061
8.42
Sampled 5 Aug 2026, 57 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 07:47 | 8.42 | 8.42 |
| 7 May 2026, 11:08 | 8.03 | 8.03 |
| 4 Feb 2026, 14:04 | 8.36 | 8.36 |
| 2 Dec 2025, 08:04 | 7.92 | 7.92 |
| 5 Nov 2025, 08:49 | 7.88 | 7.88 |
| 17 Oct 2025, 11:19 | 7.73 | 7.73 |
| 4 Sep 2025, 14:10 | 7.88 | 7.88 |
| 4 Aug 2025, 16:14 | 8.25 | 8.25 |
| 4 Jul 2025, 07:23 | 8.04 | 8.04 |
| 4 Jun 2025, 09:12 | 8.29 | 8.29 |
| 14 May 2025, 07:25 | 7.97 | 7.97 |
| 23 Apr 2025, 12:03 | 7.88 | 7.88 |
| 4 Mar 2025, 11:06 | 8.01 | 8.01 |
| 5 Feb 2025, 07:30 | 8.01 | 8.01 |
| 10 Jan 2025, 11:58 | 7.94 | 7.94 |
| 3 Dec 2024, 08:12 | 7.94 | 7.94 |
| 4 Nov 2024, 07:20 | 8.42 | 8.42 |
| 2 Oct 2024, 08:02 | 8.98 | 8.98 |
| 6 Sep 2024, 07:21 | 7.77 | 7.77 |
| 14 Aug 2024, 11:42 | 7.83 | 7.83 |
| 5 Jul 2024, 07:57 | 8.15 | 8.15 |
| 3 Jun 2024, 07:24 | 7.68 | 7.68 |
| 15 Mar 2024, 10:33 | 7.72 | 7.72 |
| 9 Feb 2024, 07:29 | 7.77 | 7.77 |
| 24 Jan 2024, 08:43 | 8.05 | 8.05 |
| 4 Dec 2023, 08:37 | 8.2 | 8.2 |
| 3 Nov 2023, 13:46 | 7.92 | 7.92 |
| 18 Oct 2023, 09:00 | 8.25 | 8.25 |
| 2 Oct 2023, 08:15 | 7.99 | 7.99 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.22 mg/l
Sampled 5 Aug 2026, 57 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 07:47 | 0.22 | 0.22 mg/l |
| 7 May 2026, 11:08 | 0.93 | 0.93 mg/l |
| 4 Feb 2026, 14:04 | 1.4 | 1.4 mg/l |
| 2 Dec 2025, 08:04 | 0.2 | 0.2 mg/l |
| 5 Nov 2025, 08:49 | 0.33 | 0.33 mg/l |
| 17 Oct 2025, 11:19 | 0.34 | 0.34 mg/l |
| 4 Sep 2025, 14:10 | 0.26 | 0.26 mg/l |
| 4 Aug 2025, 16:14 | 0.32 | 0.32 mg/l |
| 4 Jul 2025, 07:23 | 0.14 | 0.14 mg/l |
| 4 Jun 2025, 09:12 | 0.12 | 0.12 mg/l |
| 14 May 2025, 07:25 | 0.16 | 0.16 mg/l |
| 23 Apr 2025, 12:03 | 0.4 | 0.4 mg/l |
| 4 Mar 2025, 11:06 | 7 | 7 mg/l |
| 5 Feb 2025, 07:30 | 1.3 | 1.3 mg/l |
| 10 Jan 2025, 11:58 | 1.7 | 1.7 mg/l |
| 3 Dec 2024, 08:12 | 0.21 | 0.21 mg/l |
| 4 Nov 2024, 07:20 | 0.58 | 0.58 mg/l |
| 2 Oct 2024, 08:02 | 0.44 | 0.44 mg/l |
| 6 Sep 2024, 07:21 | 0.19 | 0.19 mg/l |
| 14 Aug 2024, 11:42 | 0.52 | 0.52 mg/l |
| 5 Jul 2024, 07:57 | 0.63 | 0.63 mg/l |
| 3 Jun 2024, 07:24 | 2.4 | 2.4 mg/l |
| 15 Mar 2024, 10:33 | 2.5 | 2.5 mg/l |
| 9 Feb 2024, 07:29 | 0.39 | 0.39 mg/l |
| 24 Jan 2024, 08:43 | 2.6 | 2.6 mg/l |
| 4 Dec 2023, 08:37 | 0.25 | 0.25 mg/l |
| 3 Nov 2023, 13:46 | 0.31 | 0.31 mg/l |
| 18 Oct 2023, 09:00 | 0.21 | 0.21 mg/l |
| 2 Oct 2023, 08:15 | 0.58 | 0.58 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
5.72 mg/l
Sampled 5 Aug 2026, 57 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 07:47 | 5.72 | 5.72 mg/l |
| 7 May 2026, 11:08 | 6.47 | 6.47 mg/l |
| 4 Feb 2026, 14:04 | 4.25 | 4.25 mg/l |
| 2 Dec 2025, 08:04 | 4.69 | 4.69 mg/l |
| 5 Nov 2025, 08:49 | 3.92 | 3.92 mg/l |
| 17 Oct 2025, 11:19 | 5.52 | 5.52 mg/l |
| 4 Sep 2025, 14:10 | 4.91 | 4.91 mg/l |
| 4 Aug 2025, 16:14 | 5.3 | 5.3 mg/l |
| 4 Jul 2025, 07:23 | 4.87 | 4.87 mg/l |
| 4 Jun 2025, 09:12 | 7.36 | 7.36 mg/l |
| 14 May 2025, 07:25 | 5.88 | 5.88 mg/l |
| 23 Apr 2025, 12:03 | 5.14 | 5.14 mg/l |
| 4 Mar 2025, 11:06 | 7.41 | 7.41 mg/l |
| 5 Feb 2025, 07:30 | 6.17 | 6.17 mg/l |
| 10 Jan 2025, 11:58 | 5.61 | 5.61 mg/l |
| 3 Dec 2024, 08:12 | 5.89 | 5.89 mg/l |
| 4 Nov 2024, 07:20 | 6.45 | 6.45 mg/l |
| 2 Oct 2024, 08:02 | 5.82 | 5.82 mg/l |
| 6 Sep 2024, 07:21 | 4.98 | 4.98 mg/l |
| 14 Aug 2024, 11:42 | 4.31 | 4.31 mg/l |
| 5 Jul 2024, 07:57 | 5.79 | 5.79 mg/l |
| 3 Jun 2024, 07:24 | 4.92 | 4.92 mg/l |
| 15 Mar 2024, 10:33 | 8.81 | 8.81 mg/l |
| 9 Feb 2024, 07:29 | 3.07 | 3.07 mg/l |
| 24 Jan 2024, 08:43 | 7.78 | 7.78 mg/l |
| 4 Dec 2023, 08:37 | 2.75 | 2.75 mg/l |
| 3 Nov 2023, 13:46 | 5.99 | 5.99 mg/l |
| 18 Oct 2023, 09:00 | 5.61 | 5.61 mg/l |
| 2 Oct 2023, 08:15 | 5.25 | 5.25 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.12 mg/l
Sampled 7 May 2026, 5 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 May 2026, 11:08 | 0.12 | 0.12 mg/l |
| 4 Feb 2026, 14:04 | 0.35 | 0.35 mg/l |
| 2 Dec 2025, 08:04 | 0.15 | 0.15 mg/l |
| 5 Nov 2025, 08:49 | 0.23 | 0.23 mg/l |
| 17 Oct 2025, 11:19 | 0.3 | 0.3 mg/l |
| 4 Sep 2025, 14:10 | 0.17 | 0.17 mg/l |
| 4 Aug 2025, 16:14 | 0.34 | 0.34 mg/l |
| 4 Jul 2025, 07:23 | 0.32 | 0.32 mg/l |
| 4 Jun 2025, 09:12 | 0.1 | 0.1 mg/l |
| 14 May 2025, 07:25 | 0.11 | 0.11 mg/l |
| 23 Apr 2025, 12:03 | 0.14 | 0.14 mg/l |
| 4 Mar 2025, 11:06 | 0.083 | 0.083 mg/l |
| 5 Feb 2025, 07:30 | 0.13 | 0.13 mg/l |
| 10 Jan 2025, 11:58 | 0.21 | 0.21 mg/l |
| 3 Dec 2024, 08:12 | 0.1 | 0.1 mg/l |
| 4 Nov 2024, 07:20 | 1.5 | 1.5 mg/l |
| 2 Oct 2024, 08:02 | 0.14 | 0.14 mg/l |
| 6 Sep 2024, 07:21 | 0.12 | 0.12 mg/l |
| 14 Aug 2024, 11:42 | 0.23 | 0.23 mg/l |
| 5 Jul 2024, 07:57 | 0.19 | 0.19 mg/l |
| 3 Jun 2024, 07:24 | 0.19 | 0.19 mg/l |
| 15 Mar 2024, 10:33 | 0.13 | 0.13 mg/l |
| 9 Feb 2024, 07:29 | 0.13 | 0.13 mg/l |
| 24 Jan 2024, 08:43 | 0.2 | 0.2 mg/l |
| 4 Dec 2023, 08:37 | 0.13 | 0.13 mg/l |
| 3 Nov 2023, 13:46 | 0.11 | 0.11 mg/l |
| 18 Oct 2023, 09:00 | 0.1 | 0.1 mg/l |
| 2 Oct 2023, 08:15 | 0.13 | 0.13 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1508 µS/cm
Sampled 5 Aug 2026, 57 days ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 07:47 | 1508 | 1508 µS/cm |
| 7 May 2026, 11:08 | 1500 | 1500 µS/cm |
| 4 Feb 2026, 14:04 | 1100 | 1100 µS/cm |
| 5 Nov 2025, 08:49 | 1153 | 1153 µS/cm |
| 4 Aug 2025, 16:14 | 1269 | 1269 µS/cm |
| 14 May 2025, 07:25 | 1555 | 1555 µS/cm |
| 5 Feb 2025, 07:30 | 1635 | 1635 µS/cm |
| 4 Nov 2024, 07:20 | 729 | 729 µS/cm |
| 14 Aug 2024, 11:42 | 1256 | 1256 µS/cm |
| 9 Feb 2024, 07:29 | 560 | 560 µS/cm |
| 3 Nov 2023, 13:46 | 1369 | 1369 µS/cm |
| 18 Oct 2023, 09:00 | 1607 | 1607 µS/cm |
Everything measured here
24 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 24 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 29 | Oct 2023 – Aug 2026 | 88.7% 5 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 29 | Oct 2023 – Aug 2026 | 7.59 mg/l 5 Aug 2026 |
| Temperature of Water 0076 | River water | 29 | Oct 2023 – Aug 2026 | 22.9 °C 5 Aug 2026 |
| pH 0061 | River water | 29 | Oct 2023 – Aug 2026 | 8.42 5 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 29 | Oct 2023 – Aug 2026 | 0.22 mg/l 5 Aug 2026 |
| Nitrate as N 0117 | River water | 29 | Oct 2023 – Aug 2026 | 5.72 mg/l 5 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 28 | Oct 2023 – May 2026 | 0.12 mg/l 7 May 2026 |
| Conductivity at 25 C 0077 | River water | 12 | Oct 2023 – Aug 2026 | 1508 µS/cm 5 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 29 | Oct 2023 – Aug 2026 | 89 mg/l 5 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 29 | Oct 2023 – Aug 2026 | 0.0102 mg/l 5 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 24 | Oct 2023 – Dec 2025 | 1.1 mg/l 2 Dec 2025 |
| Calcium 0241 | River water | 12 | Oct 2023 – Aug 2026 | 210 mg/l 5 Aug 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 12 | Oct 2023 – Aug 2026 | 2.1 mg/l 5 Aug 2026 |
| Chloride 0172 | River water | 12 | Oct 2023 – Aug 2026 | 190 mg/l 5 Aug 2026 |
| Magnesium 0237 | River water | 12 | Oct 2023 – Aug 2026 | 28 mg/l 5 Aug 2026 |
| Nitrite as N 0118 | River water | 29 | Oct 2023 – Aug 2026 | 0.083 mg/l 5 Aug 2026 |
| Nitrogen, Kjeldahl as N 0114 | River water | 12 | Oct 2023 – Aug 2026 | 0.2 mg/l 5 Aug 2026 |
| Nitrogen, Total as N 9686 | River water | 12 | Oct 2023 – Aug 2026 | 6 mg/l 5 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 29 | Oct 2023 – Aug 2026 | 5.8 mg/l 5 Aug 2026 |
| Potassium 0211 | River water | 12 | Oct 2023 – Aug 2026 | 4.9 mg/l 5 Aug 2026 |
| Sodium 0207 | River water | 12 | Oct 2023 – Aug 2026 | 43 mg/l 5 Aug 2026 |
| Solids, Suspended at 105 C 0135 | River water | 25 | Oct 2023 – Dec 2025 | 3.8 mg/l 2 Dec 2025 |
| Sulphate as SO4 0183 | River water | 12 | Oct 2023 – Aug 2026 | 350 mg/l 5 Aug 2026 |
| Visible oil or grease, significant trace: Present/Not found (1/0) 0664 | River water | 13 | Oct 2023 – Aug 2026 | Not found 5 Aug 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.