River Stour at Shillingstone

EA name: RIVER STOUR AT SHILLINGSTONE (also listed as “RIVER STOUR AT SHILLINGSTONE FOOTBRIDGE”)
Environment Agency sampling point SW-50340391 · 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
20 May 2026, 10:374 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 30 Sep 2026 and had nothing newer.
Samples banked
30 since 5 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
Latest sample
River / running surface water Environmental monitoring statutory (EU directives)
Where
National Grid 383031, 111389As published, to the nearest 1 m. Open in a map
River, by its own name
Stour
River, by the map
River StourPlaced on the river its name gives, 21 m from the line.
Next gauge downstream
Blandford On the River Stour · 12 km along the river
Nearest gauge upstream
Hammoon On the River Stour · 5.5 km along the river
Why it was sampled
Monitoring (national agency policy) (22 samples)
Environmental monitoring statutory (EU directives) (8 samples)

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

102.5%

Sampled 20 May 2026, 4 months ago · 2 results banked

9698100102104%20242025202629 Apr 2026, 12:01: 97.1%20 May 2026, 10:37: 102.5%
Every result (2)
SampledResult as publishedReads as
20 May 2026, 10:37102.5 102.5%
29 Apr 2026, 12:0197.1 97.1%

Dissolved oxygen

as O2 · code 9924 · mg/l

10.7 mg/l

Sampled 20 May 2026, 4 months ago · 2 results banked

1010.210.410.610.8mg/l20242025202629 Apr 2026, 12:01: 10 mg/l20 May 2026, 10:37: 10.7 mg/l
Every result (2)
SampledResult as publishedReads as
20 May 2026, 10:3710.7 10.7 mg/l
29 Apr 2026, 12:0110 10 mg/l

Water temperature

code 0076 · °C

13.5 °C

Sampled 20 May 2026, 4 months ago · 2 results banked

13.513.5513.613.6513.7°C20242025202629 Apr 2026, 12:01: 13.7 °C20 May 2026, 10:37: 13.5 °C
Every result (2)
SampledResult as publishedReads as
20 May 2026, 10:3713.5 13.5 °C
29 Apr 2026, 12:0113.7 13.7 °C

pH

code 0061

8.18

Sampled 20 May 2026, 4 months ago · 2 results banked

8.188.28.228.248.2620242025202629 Apr 2026, 12:01: 8.2520 May 2026, 10:37: 8.18
Every result (2)
SampledResult as publishedReads as
20 May 2026, 10:378.18 8.18
29 Apr 2026, 12:018.25 8.25

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

below 0.03 mg/l (not detected above this)

Sampled 20 May 2026, 4 months ago · 2 results banked

-0.500.51mg/l20242025202629 Apr 2026, 12:01: below 0.03 mg/l (not detected above this)20 May 2026, 10:37: below 0.03 mg/l (not detected above this)
Every result (2)
SampledResult as publishedReads as
20 May 2026, 10:37<0.03 below 0.03 mg/l (not detected above this)
29 Apr 2026, 12:01<0.03 below 0.03 mg/l (not detected above this)

Nitrate

as nitrogen (N) · code 0117 · mg/l

5.39 mg/l

Sampled 20 May 2026, 4 months ago · 2 results banked

55.15.25.35.4mg/l20242025202629 Apr 2026, 12:01: 5.09 mg/l20 May 2026, 10:37: 5.39 mg/l
Every result (2)
SampledResult as publishedReads as
20 May 2026, 10:375.39 5.39 mg/l
29 Apr 2026, 12:015.09 5.09 mg/l

Phosphate

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

0.079 mg/l

Sampled 20 May 2026, 4 months ago · 2 results banked

0.0650.070.0750.08mg/l20242025202629 Apr 2026, 12:01: 0.065 mg/l20 May 2026, 10:37: 0.079 mg/l
Every result (2)
SampledResult as publishedReads as
20 May 2026, 10:370.079 0.079 mg/l
29 Apr 2026, 12:010.065 0.065 mg/l

Conductivity

at 25 °C · code 0077 · µS/cm

638 µS/cm

Sampled 20 May 2026, 4 months ago · 2 results banked

610620630640µS/cm20242025202629 Apr 2026, 12:01: 616 µS/cm20 May 2026, 10:37: 638 µS/cm
Every result (2)
SampledResult as publishedReads as
20 May 2026, 10:37638 638 µS/cm
29 Apr 2026, 12:01616 616 µS/cm

Everything measured here

23 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 23 rows
DeterminandMaterialResults First – lastLatest result
Oxygen, Dissolved, % Saturation 9901 River water 2 Apr 2026 – May 2026 102.5% 20 May 2026
Oxygen, Dissolved as O2 9924 River water 2 Apr 2026 – May 2026 10.7 mg/l 20 May 2026
Temperature of Water 0076 River water 2 Apr 2026 – May 2026 13.5 °C 20 May 2026
pH 0061 River water 2 Apr 2026 – May 2026 8.18 20 May 2026
Ammoniacal Nitrogen as N 0111 River water 2 Apr 2026 – May 2026 below 0.03 mg/l 20 May 2026
Nitrate as N 0117 River water 2 Apr 2026 – May 2026 5.39 mg/l 20 May 2026
Orthophosphate, reactive as P 0180 River water 2 Apr 2026 – May 2026 0.079 mg/l 20 May 2026
Conductivity at 25 C 0077 River water 2 Apr 2026 – May 2026 638 µS/cm 20 May 2026
Aldrin 0483 River water 28 Oct 2023 – May 2026 below 0.001 µg/l 20 May 2026
Alkalinity to pH 4.5 as CaCO3 0162 River water 2 Apr 2026 – May 2026 220 mg/l 20 May 2026
Ammonia un-ionised as N 0119 River water 2 Apr 2026 – May 2026 below 0.00071 mg/l 20 May 2026
Atrazine 3002 River water 28 Oct 2023 – May 2026 0.0032 µg/l 20 May 2026
Dieldrin 0511 River water 26 Oct 2023 – May 2026 below 0.002 µg/l 20 May 2026
Endrin 0562 River water 26 Oct 2023 – May 2026 below 0.003 µg/l 20 May 2026
Fenitrothion 9716 River water 10 Oct 2023 – May 2026 below 0.001 µg/l 20 May 2026
HCH -alpha 0487 River water 22 Oct 2023 – May 2026 below 0.0001 µg/l 20 May 2026
HCH -beta 0491 River water 23 Oct 2023 – May 2026 below 0.0001 µg/l 20 May 2026
HCH -delta 0495 River water 23 Oct 2023 – May 2026 below 0.0001 µg/l 20 May 2026
HCH -gamma :- {Lindane} 0499 River water 23 Oct 2023 – May 2026 0.00011 µg/l 20 May 2026
Isodrin 9494 River water 28 Oct 2023 – May 2026 below 0.001 µg/l 20 May 2026
Nitrite as N 0118 River water 2 Apr 2026 – May 2026 0.013 mg/l 20 May 2026
Nitrogen, Total Oxidised as N 0116 River water 2 Apr 2026 – May 2026 5.4 mg/l 20 May 2026
Simazine 3001 River water 27 Oct 2023 – May 2026 below 0.003 µg/l 20 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.