River Derwent at Borrowash
EA name: RIVER DERWENT AT BORROWASH
Environment Agency sampling point MD-49692250 · 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
- 10 Sep 2026, 11:2721 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 22 since 12 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 441524, 333985As published, to the nearest 1 m. Open in a map
- River, by its own name
- Derwent
- River, by the map
- River DerwentPlaced on the river its name gives, 7 m from the line.
- Next gauge downstream
- Church Wilne On the River Derwent · 8.3 km along the river
- Nearest gauge upstream
- Derby City On the River Derwent · 9.4 km along the riverDerby Bridge Street On the Markeaton Brook · 10 km along the river
- Why it was sampled
- Monitoring (national agency policy) (22 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
92.5%
Sampled 10 Sep 2026, 21 days ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 11:27 | 92.5 | 92.5% |
| 11 Aug 2026, 12:31 | 103.3 | 103.3% |
| 4 Mar 2024, 12:00 | 100.4 | 100.4% |
| 2 Feb 2024, 08:33 | 101.7 | 101.7% |
| 10 Jan 2024, 14:25 | 99.5 | 99.5% |
| 11 Dec 2023, 10:12 | 101.8 | 101.8% |
| 28 Nov 2023, 10:45 | 102.3 | 102.3% |
| 9 Nov 2023, 10:02 | 99.9 | 99.9% |
| 12 Oct 2023, 08:06 | 91.9 | 91.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
12.1 mg/l
Sampled 4 Mar 2024, 2.6 years ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2024, 12:00 | 12.1 | 12.1 mg/l |
| 2 Feb 2024, 08:33 | 12.4 | 12.4 mg/l |
| 10 Jan 2024, 14:25 | 12.4 | 12.4 mg/l |
| 11 Dec 2023, 10:12 | 12.1 | 12.1 mg/l |
| 28 Nov 2023, 10:45 | 12.4 | 12.4 mg/l |
| 9 Nov 2023, 10:02 | 11.5 | 11.5 mg/l |
| 12 Oct 2023, 08:06 | 9.36 | 9.36 mg/l |
Water temperature
code 0076 · °C
16.2 °C
Sampled 10 Sep 2026, 21 days ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 11:27 | 16.2 | 16.2 °C |
| 11 Aug 2026, 12:31 | 19.4 | 19.4 °C |
| 4 Mar 2024, 12:00 | 7.2 | 7.2 °C |
| 2 Feb 2024, 08:33 | 6.9 | 6.9 °C |
| 10 Jan 2024, 14:25 | 6 | 6 °C |
| 11 Dec 2023, 10:12 | 7.9 | 7.9 °C |
| 28 Nov 2023, 10:45 | 7.1 | 7.1 °C |
| 9 Nov 2023, 10:02 | 9.2 | 9.2 °C |
| 12 Oct 2023, 08:06 | 14.4 | 14.4 °C |
pH
code 0061
7.9
Sampled 10 Sep 2026, 21 days ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 11:27 | 7.9 | 7.9 |
| 11 Aug 2026, 12:31 | 8.2 | 8.2 |
| 18 Mar 2024, 11:58 | 7.9 | 7.9 |
| 4 Mar 2024, 12:00 | 8 | 8 |
| 19 Feb 2024, 12:12 | 7.83 | 7.83 |
| 2 Feb 2024, 08:33 | 8.1 | 8.1 |
| 16 Jan 2024, 09:20 | 8.18 | 8.18 |
| 10 Jan 2024, 14:25 | 8.1 | 8.1 |
| 18 Dec 2023, 08:30 | 8.05 | 8.05 |
| 11 Dec 2023, 10:12 | 7.9 | 7.9 |
| 28 Nov 2023, 10:45 | 7.9 | 7.9 |
| 21 Nov 2023, 14:14 | 7.89 | 7.89 |
| 9 Nov 2023, 10:02 | 8 | 8 |
| 17 Oct 2023, 09:24 | 7.92 | 7.92 |
| 12 Oct 2023, 08:06 | 8 | 8 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.1 mg/l
Sampled 4 Mar 2024, 2.6 years ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2024, 12:00 | 0.1 | 0.1 mg/l |
| 2 Feb 2024, 08:33 | 0.081 | 0.081 mg/l |
| 10 Jan 2024, 14:25 | 0.058 | 0.058 mg/l |
| 11 Dec 2023, 10:12 | 0.087 | 0.087 mg/l |
| 28 Nov 2023, 10:45 | 0.14 | 0.14 mg/l |
| 9 Nov 2023, 10:02 | 0.058 | 0.058 mg/l |
| 12 Oct 2023, 08:06 | 0.055 | 0.055 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.069 mg/l
Sampled 4 Mar 2024, 2.6 years ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2024, 12:00 | 0.069 | 0.069 mg/l |
| 2 Feb 2024, 08:33 | 0.081 | 0.081 mg/l |
| 10 Jan 2024, 14:25 | 0.068 | 0.068 mg/l |
| 11 Dec 2023, 10:12 | 0.06 | 0.06 mg/l |
| 28 Nov 2023, 10:45 | 0.068 | 0.068 mg/l |
| 9 Nov 2023, 10:02 | 0.053 | 0.053 mg/l |
| 12 Oct 2023, 08:06 | 0.12 | 0.12 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
672 µS/cm
Sampled 10 Sep 2026, 21 days ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 11:27 | 672 | 672 µS/cm |
| 11 Aug 2026, 12:31 | 685 | 685 µS/cm |
| 4 Mar 2024, 12:00 | 483 | 483 µS/cm |
| 2 Feb 2024, 08:33 | 551 | 551 µS/cm |
| 10 Jan 2024, 14:25 | 525 | 525 µS/cm |
| 11 Dec 2023, 10:12 | 332 | 332 µS/cm |
| 28 Nov 2023, 10:45 | 395 | 395 µS/cm |
| 9 Nov 2023, 10:02 | 383 | 383 µS/cm |
| 12 Oct 2023, 08:06 | 557 | 557 µS/cm |
Everything measured here
47 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 47 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 9 | Oct 2023 – Sep 2026 | 92.5% 10 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 7 | Oct 2023 – Mar 2024 | 12.1 mg/l 4 Mar 2024 |
| Temperature of Water 0076 | River water | 9 | Oct 2023 – Sep 2026 | 16.2 °C 10 Sep 2026 |
| pH 0061 | River water | 15 | Oct 2023 – Sep 2026 | 7.9 10 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 7 | Oct 2023 – Mar 2024 | 0.1 mg/l 4 Mar 2024 |
| Orthophosphate, reactive as P 0180 | River water | 7 | Oct 2023 – Mar 2024 | 0.069 mg/l 4 Mar 2024 |
| Conductivity at 25 C 0077 | River water | 9 | Oct 2023 – Sep 2026 | 672 µS/cm 10 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 7 | Oct 2023 – Mar 2024 | 150 mg/l 4 Mar 2024 |
| Aluminium, Dissolved 6037 | River water | 13 | Oct 2023 – Mar 2024 | 30 µg/l 18 Mar 2024 |
| Barium, Dissolved 9446 | River water | 9 | Oct 2023 – Sep 2026 | 100 µg/l 10 Sep 2026 |
| Boron, Dissolved 9447 | River water | 9 | Oct 2023 – Sep 2026 | below 100 µg/l 10 Sep 2026 |
| Cadmium 0108 | River water | 2 | Aug 2026 – Sep 2026 | 0.16 µg/l 10 Sep 2026 |
| Cadmium, Dissolved 0106 | River water | 15 | Oct 2023 – Sep 2026 | below 0.1 µg/l 10 Sep 2026 |
| Calcium, Dissolved 0239 | River water | 15 | Oct 2023 – Sep 2026 | 69 mg/l 10 Sep 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 15 | Oct 2023 – Sep 2026 | 3.3 mg/l 10 Sep 2026 |
| Chloride 0172 | River water | 7 | Oct 2023 – Mar 2024 | 32 mg/l 4 Mar 2024 |
| Chromium, Dissolved 3409 | River water | 13 | Oct 2023 – Mar 2024 | below 0.5 µg/l 18 Mar 2024 |
| Copper 6452 | River water | 2 | Aug 2026 – Sep 2026 | 2.1 µg/l 10 Sep 2026 |
| Copper : BLM Bioavailable 4821 | River water | 7 | Oct 2023 – Mar 2024 | 0.15 µg/l 4 Mar 2024 |
| Copper, Dissolved 6450 | River water | 15 | Oct 2023 – Sep 2026 | 1.2 µg/l 10 Sep 2026 |
| Hardness, Total as CaCO3 0158 | River water | 15 | Oct 2023 – Sep 2026 | 234 mg/l 10 Sep 2026 |
| Ionic Balance: Dissolved 3386 | River water | 7 | Oct 2023 – Mar 2024 | -1.79% 4 Mar 2024 |
| Iron, Dissolved 6460 | River water | 9 | Oct 2023 – Sep 2026 | 51 µg/l 10 Sep 2026 |
| Lead 0050 | River water | 2 | Aug 2026 – Sep 2026 | 5.5 µg/l 10 Sep 2026 |
| Lead : BLM Bioavailable 3377 | River water | 7 | Oct 2023 – Mar 2024 | 0.55 µg/l 4 Mar 2024 |
| Lead, Dissolved 0052 | River water | 15 | Oct 2023 – Sep 2026 | below 2 µg/l 10 Sep 2026 |
| Lithium, Dissolved 4201 | River water | 9 | Oct 2023 – Sep 2026 | below 100 µg/l 10 Sep 2026 |
| Magnesium, Dissolved 0235 | River water | 15 | Oct 2023 – Sep 2026 | 15 mg/l 10 Sep 2026 |
| Manganese : BLM Bioavailable 4820 | River water | 7 | Oct 2023 – Mar 2024 | 31 µg/l 4 Mar 2024 |
| Manganese, Dissolved 6458 | River water | 9 | Oct 2023 – Sep 2026 | 66 µg/l 10 Sep 2026 |
| Nickel 6462 | River water | 2 | Aug 2026 – Sep 2026 | 2.3 µg/l 10 Sep 2026 |
| Nickel : BLM Bioavailable 3878 | River water | 7 | Oct 2023 – Mar 2024 | 1 µg/l 4 Mar 2024 |
| Nickel, Dissolved 3410 | River water | 15 | Oct 2023 – Sep 2026 | 2.2 µg/l 10 Sep 2026 |
| Nitrite as N 0118 | River water | 7 | Oct 2023 – Mar 2024 | 0.021 mg/l 4 Mar 2024 |
| Nitrogen, Total Oxidised as N 0116 | River water | 7 | Oct 2023 – Mar 2024 | 3.3 mg/l 4 Mar 2024 |
| Perfluorooctanoate anion 9274 | River water | 7 | Nov 2023 – Mar 2024 | 0.0012 µg/l 4 Mar 2024 |
| Perfluorooctylsulphonate anion 9276 | River water | 6 | Nov 2023 – Mar 2024 | 0.0018 µg/l 4 Mar 2024 |
| pH : In Situ 3169 | River water | 3 | Nov 2023 – Sep 2026 | 7.69 10 Sep 2026 |
| Potassium, Dissolved 0209 | River water | 9 | Oct 2023 – Sep 2026 | 6.3 mg/l 10 Sep 2026 |
| Silica, reactive as SiO2 0182 | River water | 7 | Oct 2023 – Mar 2024 | 7.3 mg/l 4 Mar 2024 |
| Sodium, Dissolved 0205 | River water | 9 | Oct 2023 – Sep 2026 | 45 mg/l 10 Sep 2026 |
| Solids, Suspended at 105 C 0135 | River water | 9 | Oct 2023 – Sep 2026 | 5.5 mg/l 10 Sep 2026 |
| Strontium, Filtered 6693 | River water | 9 | Oct 2023 – Sep 2026 | 340 µg/l 10 Sep 2026 |
| Sulphate, Dissolved as SO4 7859 | River water | 9 | Oct 2023 – Sep 2026 | 84 mg/l 10 Sep 2026 |
| Zinc 6455 | River water | 2 | Aug 2026 – Sep 2026 | 26 µg/l 10 Sep 2026 |
| Zinc : BLM Bioavailable 4822 | River water | 7 | Oct 2023 – Mar 2024 | 16 µg/l 4 Mar 2024 |
| Zinc, Dissolved 3408 | River water | 15 | Oct 2023 – Sep 2026 | 28 µg/l 10 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.