River Erewash upstream of Portland Park tributary
EA name: RIVER EREWASH US PORTLAND PARK TRIB
Environment Agency sampling point MD-53165580 · 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
- 2 Sep 2026, 09:2329 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 27 since 17 Jul 2024 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Planned investigation (national agency policy)
- Where
- National Grid 449722, 355454As published, to the nearest 1 m. Open in a map
- River, by its own name
- Erewash
- River, by the map
- Not placedNearest line is 386 m away and its name does not agree. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Planned investigation (national agency policy) (27 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
65.7%
Sampled 2 Sep 2026, 29 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 09:23 | 65.7 | 65.7% |
| 11 Aug 2026, 09:00 | 91.1 | 91.1% |
| 6 Jul 2026, 09:42 | 73.4 | 73.4% |
| 9 Jun 2026, 10:25 | 97.3 | 97.3% |
| 22 May 2026, 08:36 | 89.3 | 89.3% |
| 16 Apr 2026, 13:43 | 127.2 | 127.2% |
| 2 Mar 2026, 12:13 | 99.2 | 99.2% |
| 9 Feb 2026, 10:15 | 96.3 | 96.3% |
| 6 Jan 2026, 08:14 | 99.3 | 99.3% |
| 10 Dec 2025, 08:19 | 96.1 | 96.1% |
| 13 Nov 2025, 10:20 | 94.7 | 94.7% |
| 16 Oct 2025, 10:46 | 81.7 | 81.7% |
| 1 Sep 2025, 11:03 | 95.3 | 95.3% |
| 14 Aug 2025, 09:14 | 93.4 | 93.4% |
| 4 Jul 2025, 09:10 | 95.1 | 95.1% |
| 13 Jun 2025, 08:41 | 91.7 | 91.7% |
| 15 May 2025, 11:11 | 96 | 96% |
| 11 Apr 2025, 10:48 | 144.7 | 144.7% |
| 20 Mar 2025, 09:33 | 97.3 | 97.3% |
| 14 Feb 2025, 08:53 | 98.1 | 98.1% |
| 13 Jan 2025, 10:19 | 74.2 | 74.2% |
| 4 Dec 2024, 13:37 | 96.1 | 96.1% |
| 8 Nov 2024, 14:19 | 83.1 | 83.1% |
| 3 Oct 2024, 11:31 | 96.5 | 96.5% |
| 3 Sep 2024, 11:25 | 58.7 | 58.7% |
| 5 Aug 2024, 09:57 | 95.4 | 95.4% |
| 17 Jul 2024, 09:21 | 95.6 | 95.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
6.74 mg/l
Sampled 2 Sep 2026, 29 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 09:23 | 6.74 | 6.74 mg/l |
| 11 Aug 2026, 09:00 | 9.34 | 9.34 mg/l |
| 6 Jul 2026, 09:42 | 7.41 | 7.41 mg/l |
| 9 Jun 2026, 10:25 | 10.4 | 10.4 mg/l |
| 22 May 2026, 08:36 | 9.45 | 9.45 mg/l |
| 16 Apr 2026, 13:43 | 13 | 13 mg/l |
| 2 Mar 2026, 12:13 | 11.1 | 11.1 mg/l |
| 9 Feb 2026, 10:15 | 11.3 | 11.3 mg/l |
| 6 Jan 2026, 08:14 | 11.8 | 11.8 mg/l |
| 10 Dec 2025, 08:19 | 10.6 | 10.6 mg/l |
| 13 Nov 2025, 10:20 | 10.1 | 10.1 mg/l |
| 16 Oct 2025, 10:46 | 8.63 | 8.63 mg/l |
| 1 Sep 2025, 11:03 | 9.5 | 9.5 mg/l |
| 14 Aug 2025, 09:14 | 9.48 | 9.48 mg/l |
| 4 Jul 2025, 09:10 | 9.97 | 9.97 mg/l |
| 13 Jun 2025, 08:41 | 9.84 | 9.84 mg/l |
| 15 May 2025, 11:11 | 10.6 | 10.6 mg/l |
| 11 Apr 2025, 10:48 | 15.3 | 15.3 mg/l |
| 20 Mar 2025, 09:33 | 11 | 11 mg/l |
| 14 Feb 2025, 08:53 | 11.6 | 11.6 mg/l |
| 13 Jan 2025, 10:19 | 8.65 | 8.65 mg/l |
| 4 Dec 2024, 13:37 | 10.6 | 10.6 mg/l |
| 8 Nov 2024, 14:19 | 9.19 | 9.19 mg/l |
| 3 Oct 2024, 11:31 | 10.2 | 10.2 mg/l |
| 3 Sep 2024, 11:25 | 5.9 | 5.9 mg/l |
| 5 Aug 2024, 09:57 | 9.74 | 9.74 mg/l |
| 17 Jul 2024, 09:21 | 10 | 10 mg/l |
Water temperature
code 0076 · °C
14.1 °C
Sampled 2 Sep 2026, 29 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 09:23 | 14.1 | 14.1 °C |
| 11 Aug 2026, 09:00 | 14.1 | 14.1 °C |
| 6 Jul 2026, 09:42 | 14.8 | 14.8 °C |
| 9 Jun 2026, 10:25 | 12.2 | 12.2 °C |
| 22 May 2026, 08:36 | 12.7 | 12.7 °C |
| 16 Apr 2026, 13:43 | 14.1 | 14.1 °C |
| 2 Mar 2026, 12:13 | 10.2 | 10.2 °C |
| 9 Feb 2026, 10:15 | 8.3 | 8.3 °C |
| 6 Jan 2026, 08:14 | 7.8 | 7.8 °C |
| 10 Dec 2025, 08:19 | 10.7 | 10.7 °C |
| 13 Nov 2025, 10:20 | 12.3 | 12.3 °C |
| 16 Oct 2025, 10:46 | 12.8 | 12.8 °C |
| 1 Sep 2025, 11:03 | 15.4 | 15.4 °C |
| 14 Aug 2025, 09:14 | 14.6 | 14.6 °C |
| 4 Jul 2025, 09:10 | 13.1 | 13.1 °C |
| 13 Jun 2025, 08:41 | 12.1 | 12.1 °C |
| 15 May 2025, 11:11 | 11 | 11 °C |
| 11 Apr 2025, 10:48 | 12.6 | 12.6 °C |
| 20 Mar 2025, 09:33 | 9.9 | 9.9 °C |
| 14 Feb 2025, 08:53 | 7.9 | 7.9 °C |
| 13 Jan 2025, 10:19 | 8.6 | 8.6 °C |
| 4 Dec 2024, 13:37 | 10.7 | 10.7 °C |
| 8 Nov 2024, 14:19 | 10.8 | 10.8 °C |
| 3 Oct 2024, 11:31 | 12.6 | 12.6 °C |
| 3 Sep 2024, 11:25 | 15 | 15 °C |
| 5 Aug 2024, 09:57 | 14.3 | 14.3 °C |
| 17 Jul 2024, 09:21 | 13 | 13 °C |
pH
code 0061
7.83
Sampled 2 Sep 2026, 29 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 09:23 | 7.83 | 7.83 |
| 11 Aug 2026, 09:00 | 7.81 | 7.81 |
| 6 Jul 2026, 09:42 | 7.67 | 7.67 |
| 9 Jun 2026, 10:25 | 7.98 | 7.98 |
| 22 May 2026, 08:36 | 8.3 | 8.3 |
| 16 Apr 2026, 13:43 | 8.48 | 8.48 |
| 2 Mar 2026, 12:13 | 7.93 | 7.93 |
| 9 Feb 2026, 10:15 | 8.04 | 8.04 |
| 6 Jan 2026, 08:14 | 8.14 | 8.14 |
| 10 Dec 2025, 08:19 | 8.03 | 8.03 |
| 13 Nov 2025, 10:20 | 8.04 | 8.04 |
| 16 Oct 2025, 10:46 | 8.05 | 8.05 |
| 1 Sep 2025, 11:03 | 8.19 | 8.19 |
| 14 Aug 2025, 09:14 | 7.81 | 7.81 |
| 4 Jul 2025, 09:10 | 8.04 | 8.04 |
| 13 Jun 2025, 08:41 | 7.9 | 7.9 |
| 15 May 2025, 11:11 | 8.12 | 8.12 |
| 11 Apr 2025, 10:48 | 8.43 | 8.43 |
| 20 Mar 2025, 09:33 | 7.97 | 7.97 |
| 14 Feb 2025, 08:53 | 8.03 | 8.03 |
| 13 Jan 2025, 10:19 | 8.1 | 8.1 |
| 4 Dec 2024, 13:37 | 8.15 | 8.15 |
| 8 Nov 2024, 14:19 | 8.05 | 8.05 |
| 3 Oct 2024, 11:31 | 7.8 | 7.8 |
| 3 Sep 2024, 11:25 | 7.74 | 7.74 |
| 5 Aug 2024, 09:57 | 7.92 | 7.92 |
| 17 Jul 2024, 09:21 | 7.77 | 7.77 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.086 mg/l
Sampled 2 Sep 2026, 29 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 09:23 | 0.086 | 0.086 mg/l |
| 11 Aug 2026, 09:00 | 0.064 | 0.064 mg/l |
| 6 Jul 2026, 09:42 | 0.14 | 0.14 mg/l |
| 9 Jun 2026, 10:25 | 0.19 | 0.19 mg/l |
| 22 May 2026, 08:36 | 0.037 | 0.037 mg/l |
| 16 Apr 2026, 13:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Mar 2026, 12:13 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Feb 2026, 10:15 | 0.053 | 0.053 mg/l |
| 6 Jan 2026, 08:14 | 0.27 | 0.27 mg/l |
| 13 Nov 2025, 10:20 | 0.088 | 0.088 mg/l |
| 16 Oct 2025, 10:46 | 0.2 | 0.2 mg/l |
| 1 Sep 2025, 11:03 | 0.079 | 0.079 mg/l |
| 14 Aug 2025, 09:14 | 0.28 | 0.28 mg/l |
| 4 Jul 2025, 09:10 | 0.093 | 0.093 mg/l |
| 13 Jun 2025, 08:41 | 0.14 | 0.14 mg/l |
| 15 May 2025, 11:11 | 0.031 | 0.031 mg/l |
| 11 Apr 2025, 10:48 | 0.12 | 0.12 mg/l |
| 20 Mar 2025, 09:33 | 0.21 | 0.21 mg/l |
| 14 Feb 2025, 08:53 | 0.13 | 0.13 mg/l |
| 13 Jan 2025, 10:19 | 0.24 | 0.24 mg/l |
| 4 Dec 2024, 13:37 | 0.34 | 0.34 mg/l |
| 8 Nov 2024, 14:19 | 0.1 | 0.1 mg/l |
| 3 Oct 2024, 11:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Sep 2024, 11:25 | 0.047 | 0.047 mg/l |
| 5 Aug 2024, 09:57 | 0.058 | 0.058 mg/l |
| 17 Jul 2024, 09:21 | 0.034 | 0.034 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
9.09 mg/l
Sampled 2 Sep 2026, 29 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 09:23 | 9.09 | 9.09 mg/l |
| 11 Aug 2026, 09:00 | 8.71 | 8.71 mg/l |
| 6 Jul 2026, 09:42 | 8.89 | 8.89 mg/l |
| 9 Jun 2026, 10:25 | 8.64 | 8.64 mg/l |
| 22 May 2026, 08:36 | 8.01 | 8.01 mg/l |
| 16 Apr 2026, 13:43 | 8.15 | 8.15 mg/l |
| 2 Mar 2026, 12:13 | 8.89 | 8.89 mg/l |
| 9 Feb 2026, 10:15 | 3.89 | 3.89 mg/l |
| 6 Jan 2026, 08:14 | 9.77 | 9.77 mg/l |
| 13 Nov 2025, 10:20 | 8.35 | 8.35 mg/l |
| 16 Oct 2025, 10:46 | 7.82 | 7.82 mg/l |
| 1 Sep 2025, 11:03 | 7.57 | 7.57 mg/l |
| 14 Aug 2025, 09:14 | 8.23 | 8.23 mg/l |
| 4 Jul 2025, 09:10 | 8.97 | 8.97 mg/l |
| 13 Jun 2025, 08:41 | 9.07 | 9.07 mg/l |
| 15 May 2025, 11:11 | 9.37 | 9.37 mg/l |
| 11 Apr 2025, 10:48 | 8.95 | 8.95 mg/l |
| 20 Mar 2025, 09:33 | 9.28 | 9.28 mg/l |
| 14 Feb 2025, 08:53 | 8.37 | 8.37 mg/l |
| 13 Jan 2025, 10:19 | 9.24 | 9.24 mg/l |
| 4 Dec 2024, 13:37 | 8.67 | 8.67 mg/l |
| 8 Nov 2024, 14:19 | 9.22 | 9.22 mg/l |
| 3 Oct 2024, 11:31 | 9.49 | 9.49 mg/l |
| 3 Sep 2024, 11:25 | 7.62 | 7.62 mg/l |
| 5 Aug 2024, 09:57 | 9.79 | 9.79 mg/l |
| 17 Jul 2024, 09:21 | 8.99 | 8.99 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.079 mg/l
Sampled 2 Sep 2026, 29 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 09:23 | 0.079 | 0.079 mg/l |
| 11 Aug 2026, 09:00 | 0.15 | 0.15 mg/l |
| 6 Jul 2026, 09:42 | 0.11 | 0.11 mg/l |
| 9 Jun 2026, 10:25 | 0.18 | 0.18 mg/l |
| 22 May 2026, 08:36 | 0.16 | 0.16 mg/l |
| 16 Apr 2026, 13:43 | 0.045 | 0.045 mg/l |
| 2 Mar 2026, 12:13 | 0.061 | 0.061 mg/l |
| 9 Feb 2026, 10:15 | 0.035 | 0.035 mg/l |
| 6 Jan 2026, 08:14 | 0.15 | 0.15 mg/l |
| 13 Nov 2025, 10:20 | 0.093 | 0.093 mg/l |
| 16 Oct 2025, 10:46 | 0.13 | 0.13 mg/l |
| 1 Sep 2025, 11:03 | 0.11 | 0.11 mg/l |
| 14 Aug 2025, 09:14 | 0.13 | 0.13 mg/l |
| 4 Jul 2025, 09:10 | 0.13 | 0.13 mg/l |
| 13 Jun 2025, 08:41 | 0.1 | 0.1 mg/l |
| 15 May 2025, 11:11 | 0.12 | 0.12 mg/l |
| 11 Apr 2025, 10:48 | 0.097 | 0.097 mg/l |
| 20 Mar 2025, 09:33 | 0.11 | 0.11 mg/l |
| 14 Feb 2025, 08:53 | 0.093 | 0.093 mg/l |
| 13 Jan 2025, 10:19 | 0.09 | 0.09 mg/l |
| 4 Dec 2024, 13:37 | 0.11 | 0.11 mg/l |
| 8 Nov 2024, 14:19 | 0.094 | 0.094 mg/l |
| 3 Oct 2024, 11:31 | 0.059 | 0.059 mg/l |
| 3 Sep 2024, 11:25 | 0.091 | 0.091 mg/l |
| 5 Aug 2024, 09:57 | 0.11 | 0.11 mg/l |
| 17 Jul 2024, 09:21 | 0.069 | 0.069 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 | 27 | Jul 2024 – Sep 2026 | 65.7% 2 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 27 | Jul 2024 – Sep 2026 | 6.74 mg/l 2 Sep 2026 |
| Temperature of Water 0076 | River water | 27 | Jul 2024 – Sep 2026 | 14.1 °C 2 Sep 2026 |
| pH 0061 | River water | 27 | Jul 2024 – Sep 2026 | 7.83 2 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 26 | Jul 2024 – Sep 2026 | 0.086 mg/l 2 Sep 2026 |
| Nitrate as N 0117 | River water | 26 | Jul 2024 – Sep 2026 | 9.09 mg/l 2 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 26 | Jul 2024 – Sep 2026 | 0.079 mg/l 2 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 26 | Jul 2024 – Sep 2026 | 260 mg/l 2 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 26 | Jul 2024 – Sep 2026 | 0.00144 mg/l 2 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 26 | Jul 2024 – Sep 2026 | below 5 mg/l 2 Sep 2026 |
| Nitrite as N 0118 | River water | 26 | Jul 2024 – Sep 2026 | 0.11 mg/l 2 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 26 | Jul 2024 – Sep 2026 | 9.2 mg/l 2 Sep 2026 |
| Solids, Suspended at 105 C 0135 | River water | 26 | Jul 2024 – Sep 2026 | 3.7 mg/l 2 Sep 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.