Great Dalby Brook at Leicester Road
EA name: GREAT DALBY BROOK AT LEICESTER ROAD
Environment Agency sampling point MD-47968200 · 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
- 11 Mar 2026, 10:387 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
- 12 since 7 Apr 2025 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Environmental monitoring statutory (EU directives)
- Where
- National Grid 473182, 317796As published, to the nearest 1 m. Open in a map
- River, by its own name
- Great Dalby Brook
- River, by the map
- An unnamed streamPlaced by position alone (the only river line close by), 2 m from the line.
- Next gauge downstream
- Frisby on the Wreake On the River Wreake · 5.9 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (12 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
101.3%
Sampled 11 Mar 2026, 7 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Mar 2026, 10:38 | 101.3 | 101.3% |
| 11 Feb 2026, 12:23 | 97.7 | 97.7% |
| 20 Jan 2026, 13:04 | 99.3 | 99.3% |
| 8 Dec 2025, 14:15 | 45.5 | 45.5% |
| 3 Nov 2025, 13:19 | 53.6 | 53.6% |
| 6 Oct 2025, 10:24 | 72.5 | 72.5% |
| 16 Sep 2025, 13:05 | 64.7 | 64.7% |
| 14 Aug 2025, 12:14 | 70.7 | 70.7% |
| 18 Jul 2025, 11:27 | 61.5 | 61.5% |
| 4 Jun 2025, 11:23 | 75.9 | 75.9% |
| 7 May 2025, 12:51 | 115.8 | 115.8% |
| 7 Apr 2025, 08:49 | 89.9 | 89.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11.9 mg/l
Sampled 11 Mar 2026, 7 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Mar 2026, 10:38 | 11.9 | 11.9 mg/l |
| 11 Feb 2026, 12:23 | 11.4 | 11.4 mg/l |
| 20 Jan 2026, 13:04 | 12 | 12 mg/l |
| 8 Dec 2025, 14:15 | 5.23 | 5.23 mg/l |
| 3 Nov 2025, 13:19 | 5.9 | 5.9 mg/l |
| 6 Oct 2025, 10:24 | 7.78 | 7.78 mg/l |
| 16 Sep 2025, 13:05 | 6.8 | 6.8 mg/l |
| 14 Aug 2025, 12:14 | 6.66 | 6.66 mg/l |
| 18 Jul 2025, 11:27 | 5.93 | 5.93 mg/l |
| 4 Jun 2025, 11:23 | 8.05 | 8.05 mg/l |
| 7 May 2025, 12:51 | 12.9 | 12.9 mg/l |
| 7 Apr 2025, 08:49 | 11.1 | 11.1 mg/l |
Water temperature
code 0076 · °C
8.4 °C
Sampled 11 Mar 2026, 7 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Mar 2026, 10:38 | 8.4 | 8.4 °C |
| 11 Feb 2026, 12:23 | 8.6 | 8.6 °C |
| 20 Jan 2026, 13:04 | 7.2 | 7.2 °C |
| 8 Dec 2025, 14:15 | 9.2 | 9.2 °C |
| 3 Nov 2025, 13:19 | 11 | 11 °C |
| 6 Oct 2025, 10:24 | 12.1 | 12.1 °C |
| 16 Sep 2025, 13:05 | 13 | 13 °C |
| 14 Aug 2025, 12:14 | 18.1 | 18.1 °C |
| 18 Jul 2025, 11:27 | 17 | 17 °C |
| 4 Jun 2025, 11:23 | 12.6 | 12.6 °C |
| 7 May 2025, 12:51 | 10.4 | 10.4 °C |
| 7 Apr 2025, 08:49 | 6.3 | 6.3 °C |
pH
code 0061
8.26
Sampled 11 Mar 2026, 7 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Mar 2026, 10:38 | 8.26 | 8.26 |
| 11 Feb 2026, 12:23 | 7.97 | 7.97 |
| 20 Jan 2026, 13:04 | 8.23 | 8.23 |
| 8 Dec 2025, 14:15 | 8.01 | 8.01 |
| 3 Nov 2025, 13:19 | 7.7 | 7.7 |
| 6 Oct 2025, 10:24 | 7.76 | 7.76 |
| 16 Sep 2025, 13:05 | 7.8 | 7.8 |
| 14 Aug 2025, 12:14 | 7.84 | 7.84 |
| 18 Jul 2025, 11:27 | 7.82 | 7.82 |
| 4 Jun 2025, 11:23 | 7.82 | 7.82 |
| 7 May 2025, 12:51 | 8.15 | 8.15 |
| 7 Apr 2025, 08:49 | 8.23 | 8.23 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 11 Mar 2026, 7 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Mar 2026, 10:38 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Feb 2026, 12:23 | 0.099 | 0.099 mg/l |
| 20 Jan 2026, 13:04 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Dec 2025, 14:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Nov 2025, 13:19 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Oct 2025, 10:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Sep 2025, 13:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Aug 2025, 12:14 | 0.044 | 0.044 mg/l |
| 18 Jul 2025, 11:27 | 0.081 | 0.081 mg/l |
| 4 Jun 2025, 11:23 | 0.052 | 0.052 mg/l |
| 7 May 2025, 12:51 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
4.07 mg/l
Sampled 11 Mar 2026, 7 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Mar 2026, 10:38 | 4.07 | 4.07 mg/l |
| 11 Feb 2026, 12:23 | 5.38 | 5.38 mg/l |
| 20 Jan 2026, 13:04 | 8.88 | 8.88 mg/l |
| 8 Dec 2025, 14:15 | 13 | 13 mg/l |
| 3 Nov 2025, 13:19 | 0.612 | 0.612 mg/l |
| 6 Oct 2025, 10:24 | 0.983 | 0.983 mg/l |
| 16 Sep 2025, 13:05 | 1.19 | 1.19 mg/l |
| 14 Aug 2025, 12:14 | 0.989 | 0.989 mg/l |
| 18 Jul 2025, 11:27 | 0.961 | 0.961 mg/l |
| 4 Jun 2025, 11:23 | 2.06 | 2.06 mg/l |
| 7 May 2025, 12:51 | 2.08 | 2.08 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.094 mg/l
Sampled 11 Mar 2026, 7 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Mar 2026, 10:38 | 0.094 | 0.094 mg/l |
| 11 Feb 2026, 12:23 | 0.17 | 0.17 mg/l |
| 20 Jan 2026, 13:04 | 0.081 | 0.081 mg/l |
| 8 Dec 2025, 14:15 | 0.077 | 0.077 mg/l |
| 3 Nov 2025, 13:19 | 0.11 | 0.11 mg/l |
| 6 Oct 2025, 10:24 | 0.18 | 0.18 mg/l |
| 16 Sep 2025, 13:05 | 0.065 | 0.065 mg/l |
| 14 Aug 2025, 12:14 | 0.12 | 0.12 mg/l |
| 18 Jul 2025, 11:27 | 0.13 | 0.13 mg/l |
| 4 Jun 2025, 11:23 | 0.21 | 0.21 mg/l |
| 7 May 2025, 12:51 | 0.062 | 0.062 mg/l |
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 | 12 | Apr 2025 – Mar 2026 | 101.3% 11 Mar 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 12 | Apr 2025 – Mar 2026 | 11.9 mg/l 11 Mar 2026 |
| Temperature of Water 0076 | River water | 12 | Apr 2025 – Mar 2026 | 8.4 °C 11 Mar 2026 |
| pH 0061 | River water | 12 | Apr 2025 – Mar 2026 | 8.26 11 Mar 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 11 | May 2025 – Mar 2026 | below 0.03 mg/l 11 Mar 2026 |
| Nitrate as N 0117 | River water | 11 | May 2025 – Mar 2026 | 4.07 mg/l 11 Mar 2026 |
| Orthophosphate, reactive as P 0180 | River water | 11 | May 2025 – Mar 2026 | 0.094 mg/l 11 Mar 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 11 | May 2025 – Mar 2026 | 230 mg/l 11 Mar 2026 |
| Ammonia un-ionised as N 0119 | River water | 11 | May 2025 – Mar 2026 | below 0.00049 mg/l 11 Mar 2026 |
| BOD : 5 Day ATU 0085 | River water | 9 | May 2025 – Mar 2026 | 1.5 mg/l 11 Mar 2026 |
| Nitrite as N 0118 | River water | 11 | May 2025 – Mar 2026 | 0.026 mg/l 11 Mar 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 11 | May 2025 – Mar 2026 | 4.1 mg/l 11 Mar 2026 |
| Solids, Suspended at 105 C 0135 | River water | 11 | May 2025 – Mar 2026 | below 3 mg/l 11 Mar 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.