River Dene downstream of Wellesbourne F/BACKWASH

EA name: RIVER DENE D/S WELLESBOURNE F/BACKWASH (also listed as “RIVER DENE DOWNSTREAM WELLESBOURNE WTW FILTER BACKWASH”)
Environment Agency sampling point MD-10324237 · 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
9 Sep 2026, 10:4129 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
3 since 19 Jun 2026 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
Latest sample
River / running surface water Planned investigation (local monitoring) · results completed 12 Sep 2026
Where
National Grid 426816, 255933As published, to the nearest 1 m. Open in a map
River, by its own name
Dene
River, by the map
River DenePlaced on the river its name gives, 1 m from the line.
Next gauge downstream
Stratford On the River Avon · 9.9 km along the river
Nearest gauge upstream
Wellesbourne On the River Dene · 0.8 km along the river
Why it was sampled
Planned investigation (local monitoring) (3 samples)

Results here were completed a median of 4 days after the sample was taken (3 to 7 days, 3 samples).

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

81.5%

Sampled 9 Sep 2026, 29 days ago · 3 results banked

7075808590%20242025202619 Jun 2026, 10:11: 88.2%19 Aug 2026, 10:20: 73.7%9 Sep 2026, 10:41: 81.5%
Every result (3)
SampledResult as publishedReads as
9 Sep 2026, 10:4181.5 81.5%
19 Aug 2026, 10:2073.7 73.7%
19 Jun 2026, 10:1188.2 88.2%

Dissolved oxygen

as O2 · code 9924 · mg/l

8.29 mg/l

Sampled 9 Sep 2026, 29 days ago · 3 results banked

77.588.5mg/l20242025202619 Jun 2026, 10:11: 8.38 mg/l19 Aug 2026, 10:20: 7.32 mg/l9 Sep 2026, 10:41: 8.29 mg/l
Every result (3)
SampledResult as publishedReads as
9 Sep 2026, 10:418.29 8.29 mg/l
19 Aug 2026, 10:207.32 7.32 mg/l
19 Jun 2026, 10:118.38 8.38 mg/l

Water temperature

code 0076 · °C

14.5 °C

Sampled 9 Sep 2026, 29 days ago · 3 results banked

1415161718°C20242025202619 Jun 2026, 10:11: 17.7 °C19 Aug 2026, 10:20: 15.6 °C9 Sep 2026, 10:41: 14.5 °C
Every result (3)
SampledResult as publishedReads as
9 Sep 2026, 10:4114.5 14.5 °C
19 Aug 2026, 10:2015.6 15.6 °C
19 Jun 2026, 10:1117.7 17.7 °C

pH

code 0061

7.73

Sampled 9 Sep 2026, 29 days ago · 3 results banked

7.557.67.657.77.7520242025202619 Jun 2026, 10:11: 7.7519 Aug 2026, 10:20: 7.69 Sep 2026, 10:41: 7.73
Every result (3)
SampledResult as publishedReads as
9 Sep 2026, 10:417.73 7.73
19 Aug 2026, 10:207.6 7.6
19 Jun 2026, 10:117.75 7.75

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

0.035 mg/l

Sampled 9 Sep 2026, 29 days ago · 3 results banked

0.030.040.050.06mg/l20242025202619 Jun 2026, 10:11: 0.037 mg/l19 Aug 2026, 10:20: 0.056 mg/l9 Sep 2026, 10:41: 0.035 mg/l
Every result (3)
SampledResult as publishedReads as
9 Sep 2026, 10:410.035 0.035 mg/l
19 Aug 2026, 10:200.056 0.056 mg/l
19 Jun 2026, 10:110.037 0.037 mg/l

Nitrate

as nitrogen (N) · code 0117 · mg/l

7.37 mg/l

Sampled 9 Sep 2026, 29 days ago · 3 results banked

681012mg/l20242025202619 Jun 2026, 10:11: 9.97 mg/l19 Aug 2026, 10:20: 12 mg/l9 Sep 2026, 10:41: 7.37 mg/l
Every result (3)
SampledResult as publishedReads as
9 Sep 2026, 10:417.37 7.37 mg/l
19 Aug 2026, 10:2012 12 mg/l
19 Jun 2026, 10:119.97 9.97 mg/l

Phosphate

orthophosphate, reactive, as P · code 0180 · mg/l

0.2 mg/l

Sampled 9 Sep 2026, 29 days ago · 3 results banked

0.050.10.150.2mg/l20242025202619 Jun 2026, 10:11: 0.14 mg/l19 Aug 2026, 10:20: 0.096 mg/l9 Sep 2026, 10:41: 0.2 mg/l
Every result (3)
SampledResult as publishedReads as
9 Sep 2026, 10:410.2 0.2 mg/l
19 Aug 2026, 10:200.096 0.096 mg/l
19 Jun 2026, 10:110.14 0.14 mg/l

Conductivity

at 25 °C · code 0077 · µS/cm

1543 µS/cm

Sampled 9 Sep 2026, 29 days ago · 3 results banked

13001400150016001700µS/cm20242025202619 Jun 2026, 10:11: 1396 µS/cm19 Aug 2026, 10:20: 1674 µS/cm9 Sep 2026, 10:41: 1543 µS/cm
Every result (3)
SampledResult as publishedReads as
9 Sep 2026, 10:411543 1543 µS/cm
19 Aug 2026, 10:201674 1674 µS/cm
19 Jun 2026, 10:111396 1396 µS/cm

Everything measured here

12 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 12 rows
DeterminandMaterialResults First – lastLatest result
Oxygen, Dissolved, % Saturation 9901 River water 3 Jun 2026 – Sep 2026 81.5% 9 Sep 2026
Oxygen, Dissolved as O2 9924 River water 3 Jun 2026 – Sep 2026 8.29 mg/l 9 Sep 2026
Temperature of Water 0076 River water 3 Jun 2026 – Sep 2026 14.5 °C 9 Sep 2026
pH 0061 River water 3 Jun 2026 – Sep 2026 7.73 9 Sep 2026
Ammoniacal Nitrogen as N 0111 River water 3 Jun 2026 – Sep 2026 0.035 mg/l 9 Sep 2026
Nitrate as N 0117 River water 3 Jun 2026 – Sep 2026 7.37 mg/l 9 Sep 2026
Orthophosphate, reactive as P 0180 River water 3 Jun 2026 – Sep 2026 0.2 mg/l 9 Sep 2026
Conductivity at 25 C 0077 River water 3 Jun 2026 – Sep 2026 1543 µS/cm 9 Sep 2026
Alkalinity to pH 4.5 as CaCO3 0162 River water 3 Jun 2026 – Sep 2026 200 mg/l 9 Sep 2026
Ammonia un-ionised as N 0119 River water 3 Jun 2026 – Sep 2026 0.00048 mg/l 9 Sep 2026
Nitrite as N 0118 River water 3 Jun 2026 – Sep 2026 0.026 mg/l 9 Sep 2026
Nitrogen, Total Oxidised as N 0116 River water 3 Jun 2026 – Sep 2026 7.4 mg/l 9 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.