Black Brook at Greetland
EA name: BLACK BROOK AT GREETLAND
Environment Agency sampling point NE-49500035 · 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
- 25 Apr 2025, 11:3017 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
- 11 since 21 Jun 2024 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 409850, 421435As published, to the nearest 1 m. Open in a map
- River, by its own name
- Black Brook
- River, by the map
- Black BrookPlaced on the river its name gives, 5 m from the line.
- Next gauge downstream
- Elland On the River Calder · 3.8 km along the river
- Nearest gauge upstream
- Stainland Board Mills On the Black Brook · 5.1 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (10 samples)
Unplanned reactive monitoring (pollution incidents) (1 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
105.1%
Sampled 25 Apr 2025, 17 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 25 Apr 2025, 11:30 | 105.1 | 105.1% |
| 19 Mar 2025, 10:18 | 105.9 | 105.9% |
| 16 Jan 2025, 13:20 | 51.2 | 51.2% |
| 10 Dec 2024, 10:20 | 101 | 101% |
| 8 Nov 2024, 10:11 | 96.4 | 96.4% |
| 3 Oct 2024, 13:14 | 100.3 | 100.3% |
| 19 Sep 2024, 10:50 | 96.5 | 96.5% |
| 2 Aug 2024, 07:14 | 97.3 | 97.3% |
| 1 Jul 2024, 08:34 | 100.9 | 100.9% |
| 21 Jun 2024, 19:00 | 93.8 | 93.8% |
| 21 Jun 2024, 11:40 | 97.8 | 97.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
12.1 mg/l
Sampled 25 Apr 2025, 17 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 25 Apr 2025, 11:30 | 12.1 | 12.1 mg/l |
| 19 Mar 2025, 10:18 | 13.8 | 13.8 mg/l |
| 16 Jan 2025, 13:20 | 6.99 | 6.99 mg/l |
| 10 Dec 2024, 10:20 | 12.1 | 12.1 mg/l |
| 8 Nov 2024, 10:11 | 10.9 | 10.9 mg/l |
| 3 Oct 2024, 13:14 | 11 | 11 mg/l |
| 19 Sep 2024, 10:50 | 10.4 | 10.4 mg/l |
| 2 Aug 2024, 07:14 | 9.85 | 9.85 mg/l |
| 1 Jul 2024, 08:34 | 10.8 | 10.8 mg/l |
| 21 Jun 2024, 11:40 | 10.3 | 10.3 mg/l |
Water temperature
code 0076 · °C
9.1 °C
Sampled 25 Apr 2025, 17 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 25 Apr 2025, 11:30 | 9.1 | 9.1 °C |
| 19 Mar 2025, 10:18 | 4.3 | 4.3 °C |
| 16 Jan 2025, 13:20 | 2.4 | 2.4 °C |
| 10 Dec 2024, 10:20 | 7.4 | 7.4 °C |
| 8 Nov 2024, 10:11 | 10 | 10 °C |
| 3 Oct 2024, 13:14 | 11 | 11 °C |
| 19 Sep 2024, 10:50 | 12 | 12 °C |
| 2 Aug 2024, 07:14 | 14.7 | 14.7 °C |
| 1 Jul 2024, 08:34 | 12.2 | 12.2 °C |
| 21 Jun 2024, 19:00 | 14.9 | 14.9 °C |
| 21 Jun 2024, 11:40 | 13.1 | 13.1 °C |
pH
code 0061
8.18
Sampled 25 Apr 2025, 17 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 25 Apr 2025, 11:30 | 8.18 | 8.18 |
| 19 Mar 2025, 10:18 | 7.95 | 7.95 |
| 16 Jan 2025, 13:20 | 7.22 | 7.22 |
| 10 Dec 2024, 10:20 | 7.6 | 7.6 |
| 8 Nov 2024, 10:11 | 7.72 | 7.72 |
| 3 Oct 2024, 13:14 | 7.67 | 7.67 |
| 19 Sep 2024, 10:50 | 7.76 | 7.76 |
| 2 Aug 2024, 07:14 | 7.78 | 7.78 |
| 1 Jul 2024, 08:34 | 7.96 | 7.96 |
| 21 Jun 2024, 19:00 | 7.81 | 7.81 |
| 21 Jun 2024, 11:40 | 7.88 | 7.88 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 25 Apr 2025, 17 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 25 Apr 2025, 11:30 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Mar 2025, 10:18 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Jan 2025, 13:20 | 0.32 | 0.32 mg/l |
| 10 Dec 2024, 10:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Nov 2024, 10:11 | 0.032 | 0.032 mg/l |
| 3 Oct 2024, 13:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Sep 2024, 10:50 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Aug 2024, 07:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Jul 2024, 08:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Jun 2024, 19:00 | <0.5 | below 0.5 mg/l (not detected above this) |
| 21 Jun 2024, 11:40 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.39 mg/l
Sampled 25 Apr 2025, 17 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 25 Apr 2025, 11:30 | 1.39 | 1.39 mg/l |
| 19 Mar 2025, 10:18 | 1.9 | 1.9 mg/l |
| 16 Jan 2025, 13:20 | 1.27 | 1.27 mg/l |
| 10 Dec 2024, 10:20 | 2.6 | 2.6 mg/l |
| 8 Nov 2024, 10:11 | 1.69 | 1.69 mg/l |
| 3 Oct 2024, 13:14 | 2.3 | 2.3 mg/l |
| 19 Sep 2024, 10:50 | 1.39 | 1.39 mg/l |
| 2 Aug 2024, 07:14 | 1.09 | 1.09 mg/l |
| 1 Jul 2024, 08:34 | 1.59 | 1.59 mg/l |
| 21 Jun 2024, 11:40 | 1.69 | 1.69 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
below 0.01 mg/l (not detected above this)
Sampled 25 Apr 2025, 17 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 25 Apr 2025, 11:30 | <0.01 | below 0.01 mg/l (not detected above this) |
| 19 Mar 2025, 10:18 | <0.01 | below 0.01 mg/l (not detected above this) |
| 16 Jan 2025, 13:20 | 0.42 | 0.42 mg/l |
| 10 Dec 2024, 10:20 | 0.021 | 0.021 mg/l |
| 8 Nov 2024, 10:11 | 0.012 | 0.012 mg/l |
| 3 Oct 2024, 13:14 | 0.022 | 0.022 mg/l |
| 19 Sep 2024, 10:50 | 0.027 | 0.027 mg/l |
| 2 Aug 2024, 07:14 | 0.19 | 0.19 mg/l |
| 1 Jul 2024, 08:34 | 0.03 | 0.03 mg/l |
| 21 Jun 2024, 19:00 | <0.5 | below 0.5 mg/l (not detected above this) |
| 21 Jun 2024, 11:40 | 0.017 | 0.017 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
358 µS/cm
Sampled 25 Apr 2025, 17 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 25 Apr 2025, 11:30 | 358 | 358 µS/cm |
| 19 Mar 2025, 10:18 | 354 | 354 µS/cm |
| 16 Jan 2025, 13:20 | 382 | 382 µS/cm |
| 10 Dec 2024, 10:20 | 285 | 285 µS/cm |
| 8 Nov 2024, 10:11 | 302 | 302 µS/cm |
| 3 Oct 2024, 13:14 | 276 | 276 µS/cm |
| 19 Sep 2024, 10:50 | 340 | 340 µS/cm |
| 2 Aug 2024, 07:14 | 269 | 269 µS/cm |
| 1 Jul 2024, 08:34 | 339 | 339 µS/cm |
| 21 Jun 2024, 19:00 | 336.3 | 336.3 µS/cm |
| 21 Jun 2024, 11:40 | 339 | 339 µS/cm |
Everything measured here
21 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 21 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 11 | Jun 2024 – Apr 2025 | 105.1% 25 Apr 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 10 | Jun 2024 – Apr 2025 | 12.1 mg/l 25 Apr 2025 |
| Temperature of Water 0076 | River water | 11 | Jun 2024 – Apr 2025 | 9.1 °C 25 Apr 2025 |
| pH 0061 | River water | 11 | Jun 2024 – Apr 2025 | 8.18 25 Apr 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 11 | Jun 2024 – Apr 2025 | below 0.03 mg/l 25 Apr 2025 |
| Nitrate as N 0117 | River water | 10 | Jun 2024 – Apr 2025 | 1.39 mg/l 25 Apr 2025 |
| Orthophosphate, reactive as P 0180 | River water | 11 | Jun 2024 – Apr 2025 | below 0.01 mg/l 25 Apr 2025 |
| Conductivity at 25 C 0077 | River water | 11 | Jun 2024 – Apr 2025 | 358 µS/cm 25 Apr 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 9 | Jun 2024 – Apr 2025 | 60 mg/l 25 Apr 2025 |
| Ammonia un-ionised as N 0119 | River water | 10 | Jun 2024 – Apr 2025 | below 0.00051 mg/l 25 Apr 2025 |
| BOD : 5 Day ATU 0085 | River water | 1 | Jun 2024 – Jun 2024 | 1.2 mg/l 21 Jun 2024 |
| Chloride 0172 | River water | 1 | Jun 2024 – Jun 2024 | 36 mg/l 21 Jun 2024 |
| Detergents, Anionic 0461 | River water | 1 | Jun 2024 – Jun 2024 | below 0.05 mg/l 21 Jun 2024 |
| Detergents, Cationic as Benzalkonium Chloride 3454 | River water | 1 | Jun 2024 – Jun 2024 | below 0.005 mg/l 21 Jun 2024 |
| Detergents, Non-ionic 0463 | River water | 1 | Jun 2024 – Jun 2024 | below 0.0001 mg/l 21 Jun 2024 |
| GCMS Screen : Semi-Volatile Screen: Semi Quantitative 3106 | River water | 1 | Jun 2024 – Jun 2024 | 1 unitless value 21 Jun 2024 |
| National Grid Reference : Whole : Field report 7434 | River water | 1 | Jun 2024 – Jun 2024 | 1 unitless value 21 Jun 2024 |
| Nitrite as N 0118 | River water | 10 | Jun 2024 – Apr 2025 | 0.0067 mg/l 25 Apr 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 11 | Jun 2024 – Apr 2025 | 1.4 mg/l 25 Apr 2025 |
| Salinity : In Situ 7608 | River water | 1 | Jun 2024 – Jun 2024 | 0.16 parts per thousand 21 Jun 2024 |
| Solids, Suspended at 105 C 0135 | River water | 1 | Jun 2024 – Jun 2024 | 12 mg/l 21 Jun 2024 |
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.