River Derwent at Yorkshire Bridge
EA name: RIVER DERWENT AT YORKSHIRE BRIDGE
Environment Agency sampling point MD-49712380 · 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
- 15 Sep 2026, 13:2516 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 29 since 18 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 419813, 384969As 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, 10 m from the line.
- Next gauge downstream
- Mytham Bridge On the River Derwent · 4.2 km along the river
- Nearest gauge upstream
- Yorkshire Bridge On the River Derwent · 0.1 km along the river
- Why it was sampled
- Monitoring (national agency policy) (29 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
99.2%
Sampled 15 Sep 2026, 16 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 13:25 | 99.2 | 99.2% |
| 13 Aug 2026, 10:38 | 100.7 | 100.7% |
| 28 Jul 2026, 11:03 | 102.5 | 102.5% |
| 16 Jun 2026, 12:16 | 102.8 | 102.8% |
| 26 May 2026, 11:36 | 98 | 98% |
| 10 May 2026, 10:34 | 97.9 | 97.9% |
| 20 Apr 2026, 11:05 | 101 | 101% |
| 17 Mar 2026, 11:06 | 96.2 | 96.2% |
| 12 Mar 2026, 11:33 | 94.7 | 94.7% |
| 17 Feb 2026, 13:06 | 103.4 | 103.4% |
| 26 Jan 2026, 13:19 | 102.7 | 102.7% |
| 7 Mar 2025, 11:22 | 102.9 | 102.9% |
| 7 Feb 2025, 11:07 | 101.3 | 101.3% |
| 21 Jan 2025, 10:41 | 103.1 | 103.1% |
| 4 Dec 2024, 10:57 | 101.3 | 101.3% |
| 21 Nov 2024, 14:27 | 102.4 | 102.4% |
| 17 Oct 2024, 12:09 | 99.5 | 99.5% |
| 25 Sep 2024, 10:26 | 93.4 | 93.4% |
| 28 Aug 2024, 12:55 | 98.6 | 98.6% |
| 29 Jul 2024, 13:39 | 99 | 99% |
| 19 Jul 2024, 13:25 | 99.2 | 99.2% |
| 17 Jun 2024, 11:39 | 101.7 | 101.7% |
| 17 Apr 2024, 10:23 | 104.6 | 104.6% |
| 18 Mar 2024, 10:52 | 104.6 | 104.6% |
| 20 Feb 2024, 09:51 | 102.3 | 102.3% |
| 18 Jan 2024, 13:01 | 102.4 | 102.4% |
| 5 Dec 2023, 13:08 | 93.4 | 93.4% |
| 20 Nov 2023, 12:24 | 104 | 104% |
| 18 Oct 2023, 13:53 | 110.3 | 110.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.96 mg/l
Sampled 15 Sep 2026, 16 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 13:25 | 9.96 | 9.96 mg/l |
| 13 Aug 2026, 10:38 | 10.8 | 10.8 mg/l |
| 28 Jul 2026, 11:03 | 11.2 | 11.2 mg/l |
| 16 Jun 2026, 12:16 | 11.5 | 11.5 mg/l |
| 26 May 2026, 11:36 | 11.1 | 11.1 mg/l |
| 10 May 2026, 10:34 | 11.4 | 11.4 mg/l |
| 20 Apr 2026, 11:05 | 11.9 | 11.9 mg/l |
| 17 Mar 2026, 11:06 | 11.6 | 11.6 mg/l |
| 12 Mar 2026, 11:33 | 11.7 | 11.7 mg/l |
| 17 Feb 2026, 13:06 | 13.4 | 13.4 mg/l |
| 26 Jan 2026, 13:19 | 13.3 | 13.3 mg/l |
| 7 Mar 2025, 11:22 | 12.7 | 12.7 mg/l |
| 7 Feb 2025, 11:07 | 13 | 13 mg/l |
| 21 Jan 2025, 10:41 | 13.3 | 13.3 mg/l |
| 4 Dec 2024, 10:57 | 12.2 | 12.2 mg/l |
| 21 Nov 2024, 14:27 | 12.2 | 12.2 mg/l |
| 17 Oct 2024, 12:09 | 10.7 | 10.7 mg/l |
| 25 Sep 2024, 10:26 | 10.1 | 10.1 mg/l |
| 28 Aug 2024, 12:55 | 10.5 | 10.5 mg/l |
| 29 Jul 2024, 13:39 | 10.5 | 10.5 mg/l |
| 19 Jul 2024, 13:25 | 10.7 | 10.7 mg/l |
| 17 Jun 2024, 11:39 | 11.3 | 11.3 mg/l |
| 17 Apr 2024, 10:23 | 12.2 | 12.2 mg/l |
| 18 Mar 2024, 10:52 | 12.6 | 12.6 mg/l |
| 20 Feb 2024, 09:51 | 12.5 | 12.5 mg/l |
| 18 Jan 2024, 13:01 | 13.2 | 13.2 mg/l |
| 5 Dec 2023, 13:08 | 11.4 | 11.4 mg/l |
| 20 Nov 2023, 12:24 | 11.8 | 11.8 mg/l |
| 18 Oct 2023, 13:53 | 11.6 | 11.6 mg/l |
Water temperature
code 0076 · °C
15.1 °C
Sampled 15 Sep 2026, 16 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 13:25 | 15.1 | 15.1 °C |
| 13 Aug 2026, 10:38 | 12.1 | 12.1 °C |
| 28 Jul 2026, 11:03 | 11.3 | 11.3 °C |
| 16 Jun 2026, 12:16 | 10.2 | 10.2 °C |
| 26 May 2026, 11:36 | 9.9 | 9.9 °C |
| 10 May 2026, 10:34 | 8.6 | 8.6 °C |
| 20 Apr 2026, 11:05 | 8.1 | 8.1 °C |
| 17 Mar 2026, 11:06 | 7.2 | 7.2 °C |
| 12 Mar 2026, 11:33 | 6.3 | 6.3 °C |
| 17 Feb 2026, 13:06 | 4.4 | 4.4 °C |
| 26 Jan 2026, 13:19 | 4.4 | 4.4 °C |
| 7 Mar 2025, 11:22 | 6.3 | 6.3 °C |
| 7 Feb 2025, 11:07 | 4.7 | 4.7 °C |
| 21 Jan 2025, 10:41 | 4.7 | 4.7 °C |
| 4 Dec 2024, 10:57 | 7.2 | 7.2 °C |
| 21 Nov 2024, 14:27 | 7.6 | 7.6 °C |
| 17 Oct 2024, 12:09 | 11.8 | 11.8 °C |
| 25 Sep 2024, 10:26 | 11.6 | 11.6 °C |
| 28 Aug 2024, 12:55 | 12.3 | 12.3 °C |
| 29 Jul 2024, 13:39 | 12.4 | 12.4 °C |
| 19 Jul 2024, 13:25 | 11.7 | 11.7 °C |
| 17 Jun 2024, 11:39 | 10.4 | 10.4 °C |
| 17 Apr 2024, 10:23 | 8.6 | 8.6 °C |
| 18 Mar 2024, 10:52 | 7.4 | 7.4 °C |
| 20 Feb 2024, 09:51 | 6.6 | 6.6 °C |
| 18 Jan 2024, 13:01 | 4.7 | 4.7 °C |
| 5 Dec 2023, 13:08 | 6.9 | 6.9 °C |
| 20 Nov 2023, 12:24 | 9.6 | 9.6 °C |
| 18 Oct 2023, 13:53 | 12.9 | 12.9 °C |
pH
code 0061
6.89
Sampled 15 Sep 2026, 16 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 13:25 | 6.89 | 6.89 |
| 13 Aug 2026, 10:38 | 7.37 | 7.37 |
| 28 Jul 2026, 11:03 | 7.35 | 7.35 |
| 16 Jun 2026, 12:16 | 7.66 | 7.66 |
| 26 May 2026, 11:36 | 7.39 | 7.39 |
| 10 May 2026, 10:34 | 7.87 | 7.87 |
| 20 Apr 2026, 11:05 | 7.18 | 7.18 |
| 17 Mar 2026, 11:06 | 6.73 | 6.73 |
| 12 Mar 2026, 11:33 | 7.62 | 7.62 |
| 17 Feb 2026, 13:06 | 7.4 | 7.4 |
| 26 Jan 2026, 13:19 | 7.38 | 7.38 |
| 7 Mar 2025, 11:22 | 7.84 | 7.84 |
| 7 Feb 2025, 11:07 | 7.73 | 7.73 |
| 21 Jan 2025, 10:41 | 8.11 | 8.11 |
| 4 Dec 2024, 10:57 | 7.7 | 7.7 |
| 21 Nov 2024, 14:27 | 7.69 | 7.69 |
| 17 Oct 2024, 12:09 | 7.8 | 7.8 |
| 25 Sep 2024, 10:26 | 7.26 | 7.26 |
| 28 Aug 2024, 12:55 | 8.22 | 8.22 |
| 29 Jul 2024, 13:39 | 7.38 | 7.38 |
| 19 Jul 2024, 13:25 | 7.47 | 7.47 |
| 17 Jun 2024, 11:39 | 7.75 | 7.75 |
| 17 Apr 2024, 10:23 | 7.69 | 7.69 |
| 18 Mar 2024, 10:52 | 7.88 | 7.88 |
| 20 Feb 2024, 09:51 | 7.96 | 7.96 |
| 18 Jan 2024, 13:01 | 7.45 | 7.45 |
| 5 Dec 2023, 13:08 | 8.53 | 8.53 |
| 20 Nov 2023, 12:24 | 7.55 | 7.55 |
| 18 Oct 2023, 13:53 | 7.5 | 7.5 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 15 Sep 2026, 16 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 13:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Aug 2026, 10:38 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Jul 2026, 11:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Jun 2026, 12:16 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 May 2026, 11:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Apr 2026, 11:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Mar 2026, 11:06 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Feb 2026, 13:06 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Jan 2026, 13:19 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Mar 2025, 11:22 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Feb 2025, 11:07 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Jan 2025, 10:41 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Dec 2024, 10:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Nov 2024, 14:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Oct 2024, 12:09 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Sep 2024, 10:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Aug 2024, 12:55 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 Jul 2024, 13:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Jul 2024, 13:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jun 2024, 11:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Apr 2024, 10:23 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Mar 2024, 10:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Feb 2024, 09:51 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Jan 2024, 13:01 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Dec 2023, 13:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Nov 2023, 12:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Oct 2023, 13:53 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.616 mg/l
Sampled 15 Sep 2026, 16 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 13:25 | 0.616 | 0.616 mg/l |
| 13 Aug 2026, 10:38 | 0.576 | 0.576 mg/l |
| 28 Jul 2026, 11:03 | 0.596 | 0.596 mg/l |
| 16 Jun 2026, 12:16 | 0.626 | 0.626 mg/l |
| 26 May 2026, 11:36 | 0.616 | 0.616 mg/l |
| 20 Apr 2026, 11:05 | 0.616 | 0.616 mg/l |
| 17 Mar 2026, 11:06 | 0.686 | 0.686 mg/l |
| 17 Feb 2026, 13:06 | 0.696 | 0.696 mg/l |
| 26 Jan 2026, 13:19 | 0.676 | 0.676 mg/l |
| 7 Mar 2025, 11:22 | 0.556 | 0.556 mg/l |
| 7 Feb 2025, 11:07 | 0.576 | 0.576 mg/l |
| 21 Jan 2025, 10:41 | 0.526 | 0.526 mg/l |
| 4 Dec 2024, 10:57 | 0.386 | 0.386 mg/l |
| 21 Nov 2024, 14:27 | 0.416 | 0.416 mg/l |
| 17 Oct 2024, 12:09 | 0.456 | 0.456 mg/l |
| 25 Sep 2024, 10:26 | 0.406 | 0.406 mg/l |
| 28 Aug 2024, 12:55 | 0.366 | 0.366 mg/l |
| 29 Jul 2024, 13:39 | 0.466 | 0.466 mg/l |
| 19 Jul 2024, 13:25 | 0.396 | 0.396 mg/l |
| 17 Jun 2024, 11:39 | 0.416 | 0.416 mg/l |
| 17 Apr 2024, 10:23 | 0.456 | 0.456 mg/l |
| 18 Mar 2024, 10:52 | 0.496 | 0.496 mg/l |
| 20 Feb 2024, 09:51 | 0.436 | 0.436 mg/l |
| 18 Jan 2024, 13:01 | 0.476 | 0.476 mg/l |
| 5 Dec 2023, 13:08 | 0.426 | 0.426 mg/l |
| 20 Nov 2023, 12:24 | 0.436 | 0.436 mg/l |
| 18 Oct 2023, 13:53 | 0.476 | 0.476 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
below 0.01 mg/l (not detected above this)
Sampled 15 Sep 2026, 16 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 13:25 | <0.01 | below 0.01 mg/l (not detected above this) |
| 13 Aug 2026, 10:38 | <0.01 | below 0.01 mg/l (not detected above this) |
| 28 Jul 2026, 11:03 | <0.01 | below 0.01 mg/l (not detected above this) |
| 16 Jun 2026, 12:16 | <0.01 | below 0.01 mg/l (not detected above this) |
| 26 May 2026, 11:36 | <0.01 | below 0.01 mg/l (not detected above this) |
| 20 Apr 2026, 11:05 | <0.01 | below 0.01 mg/l (not detected above this) |
| 17 Mar 2026, 11:06 | <0.01 | below 0.01 mg/l (not detected above this) |
| 17 Feb 2026, 13:06 | <0.01 | below 0.01 mg/l (not detected above this) |
| 26 Jan 2026, 13:19 | <0.01 | below 0.01 mg/l (not detected above this) |
| 7 Mar 2025, 11:22 | <0.01 | below 0.01 mg/l (not detected above this) |
| 7 Feb 2025, 11:07 | <0.01 | below 0.01 mg/l (not detected above this) |
| 21 Jan 2025, 10:41 | <0.01 | below 0.01 mg/l (not detected above this) |
| 4 Dec 2024, 10:57 | <0.01 | below 0.01 mg/l (not detected above this) |
| 21 Nov 2024, 14:27 | <0.01 | below 0.01 mg/l (not detected above this) |
| 17 Oct 2024, 12:09 | <0.01 | below 0.01 mg/l (not detected above this) |
| 25 Sep 2024, 10:26 | <0.01 | below 0.01 mg/l (not detected above this) |
| 28 Aug 2024, 12:55 | <0.01 | below 0.01 mg/l (not detected above this) |
| 29 Jul 2024, 13:39 | <0.01 | below 0.01 mg/l (not detected above this) |
| 19 Jul 2024, 13:25 | <0.01 | below 0.01 mg/l (not detected above this) |
| 17 Jun 2024, 11:39 | <0.01 | below 0.01 mg/l (not detected above this) |
| 17 Apr 2024, 10:23 | <0.01 | below 0.01 mg/l (not detected above this) |
| 18 Mar 2024, 10:52 | <0.01 | below 0.01 mg/l (not detected above this) |
| 20 Feb 2024, 09:51 | <0.01 | below 0.01 mg/l (not detected above this) |
| 18 Jan 2024, 13:01 | <0.01 | below 0.01 mg/l (not detected above this) |
| 5 Dec 2023, 13:08 | <0.01 | below 0.01 mg/l (not detected above this) |
| 20 Nov 2023, 12:24 | <0.01 | below 0.01 mg/l (not detected above this) |
| 18 Oct 2023, 13:53 | <0.01 | below 0.01 mg/l (not detected above this) |
Conductivity
at 25 °C · code 0077 · µS/cm
91 µS/cm
Sampled 15 Sep 2026, 16 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 13:25 | 91 | 91 µS/cm |
| 13 Aug 2026, 10:38 | 83 | 83 µS/cm |
| 28 Jul 2026, 11:03 | 83 | 83 µS/cm |
| 16 Jun 2026, 12:16 | 76 | 76 µS/cm |
| 26 May 2026, 11:36 | 83 | 83 µS/cm |
| 10 May 2026, 10:34 | 83 | 83 µS/cm |
| 20 Apr 2026, 11:05 | 87 | 87 µS/cm |
| 17 Mar 2026, 11:06 | 70 | 70 µS/cm |
| 12 Mar 2026, 11:33 | 91 | 91 µS/cm |
| 17 Feb 2026, 13:06 | 76 | 76 µS/cm |
| 26 Jan 2026, 13:19 | 80 | 80 µS/cm |
| 7 Mar 2025, 11:22 | 105 | 105 µS/cm |
| 7 Feb 2025, 11:07 | 93 | 93 µS/cm |
| 21 Jan 2025, 10:41 | 80 | 80 µS/cm |
| 4 Dec 2024, 10:57 | 83 | 83 µS/cm |
| 21 Nov 2024, 14:27 | 79 | 79 µS/cm |
| 17 Oct 2024, 12:09 | 86 | 86 µS/cm |
| 25 Sep 2024, 10:26 | 80 | 80 µS/cm |
| 28 Aug 2024, 12:55 | 92 | 92 µS/cm |
| 29 Jul 2024, 13:39 | 85 | 85 µS/cm |
| 19 Jul 2024, 13:25 | 81 | 81 µS/cm |
| 17 Jun 2024, 11:39 | 77 | 77 µS/cm |
| 17 Apr 2024, 10:23 | 66 | 66 µS/cm |
| 18 Mar 2024, 10:52 | 67 | 67 µS/cm |
| 20 Feb 2024, 09:51 | 79 | 79 µS/cm |
| 18 Jan 2024, 13:01 | 62 | 62 µS/cm |
| 5 Dec 2023, 13:08 | 95 | 95 µS/cm |
| 20 Nov 2023, 12:24 | 64 | 64 µS/cm |
| 18 Oct 2023, 13:53 | 73 | 73 µS/cm |
Everything measured here
14 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 14 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 29 | Oct 2023 – Sep 2026 | 99.2% 15 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 29 | Oct 2023 – Sep 2026 | 9.96 mg/l 15 Sep 2026 |
| Temperature of Water 0076 | River water | 29 | Oct 2023 – Sep 2026 | 15.1 °C 15 Sep 2026 |
| pH 0061 | River water | 29 | Oct 2023 – Sep 2026 | 6.89 15 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 27 | Oct 2023 – Sep 2026 | below 0.03 mg/l 15 Sep 2026 |
| Nitrate as N 0117 | River water | 27 | Oct 2023 – Sep 2026 | 0.616 mg/l 15 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 27 | Oct 2023 – Sep 2026 | below 0.01 mg/l 15 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 29 | Oct 2023 – Sep 2026 | 91 µS/cm 15 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 27 | Oct 2023 – Sep 2026 | 21 mg/l 15 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 27 | Oct 2023 – Sep 2026 | below 0.00006 mg/l 15 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 19 | Feb 2024 – May 2026 | below 1 mg/l 26 May 2026 |
| Nitrite as N 0118 | River water | 27 | Oct 2023 – Sep 2026 | below 0.004 mg/l 15 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 27 | Oct 2023 – Sep 2026 | 0.62 mg/l 15 Sep 2026 |
| Phosphorus, Total as P 0348 | River water | 16 | Jun 2024 – May 2026 | 0.011 mg/l 26 May 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.