River Stort at Manuden Road- Stort

EA name: RIVER STORT AT MANUDEN ROAD- STORT (also listed as “RSN0065 RIVER STORT AT MANUDEN ROAD- STORT (AT CLAVERING)”)
Environment Agency sampling point TH-RSN0065 · 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
21 Sep 2026, 10:1617 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
9 since 27 Jan 2026 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
Latest sample
River / running surface water Monitoring (national agency policy) · results completed 23 Sep 2026
Where
National Grid 549135, 228852As published, to the nearest 1 m. Open in a map
River, by its own name
Stort
River, by the map
River StortPlaced on the river its name gives, 3 m from the line.
Next gauge downstream
Bishops Stortford, Grange Paddocks On the River Stort · 9.6 km along the river
Nearest gauge upstream
Clavering On the River Stort · 3.7 km along the river
Why it was sampled
Monitoring (national agency policy) (9 samples)

Results here were completed a median of 2 days after the sample was taken (2 to 27 days, 9 samples). 5 visits found no water to sample (recorded as “No flow”).

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

104.4%

Sampled 13 Apr 2026, 6 months ago · 4 results banked

90100110120%20242025202627 Jan 2026, 11:11: 100.9%13 Feb 2026, 10:28: 97.8%10 Mar 2026, 10:50: 119.4%13 Apr 2026, 11:30: 104.4%
Every result (4)
SampledResult as publishedReads as
13 Apr 2026, 11:30104.4 104.4%
10 Mar 2026, 10:50119.4 119.4%
13 Feb 2026, 10:2897.8 97.8%
27 Jan 2026, 11:11100.9 100.9%

Dissolved oxygen

as O2 · code 9924 · mg/l

12.2 mg/l

Sampled 13 Apr 2026, 6 months ago · 4 results banked

11.51212.51313.514mg/l20242025202627 Jan 2026, 11:11: 12.7 mg/l13 Feb 2026, 10:28: 11.9 mg/l10 Mar 2026, 10:50: 13.8 mg/l13 Apr 2026, 11:30: 12.2 mg/l
Every result (4)
SampledResult as publishedReads as
13 Apr 2026, 11:3012.2 12.2 mg/l
10 Mar 2026, 10:5013.8 13.8 mg/l
13 Feb 2026, 10:2811.9 11.9 mg/l
27 Jan 2026, 11:1112.7 12.7 mg/l

Water temperature

code 0076 · °C

8.5 °C

Sampled 13 Apr 2026, 6 months ago · 4 results banked

56789°C20242025202627 Jan 2026, 11:11: 5.6 °C13 Feb 2026, 10:28: 6.7 °C10 Mar 2026, 10:50: 8.9 °C13 Apr 2026, 11:30: 8.5 °C
Every result (4)
SampledResult as publishedReads as
13 Apr 2026, 11:308.5 8.5 °C
10 Mar 2026, 10:508.9 8.9 °C
13 Feb 2026, 10:286.7 6.7 °C
27 Jan 2026, 11:115.6 5.6 °C

pH

code 0061

8.51

Sampled 13 Apr 2026, 6 months ago · 4 results banked

8.38.48.58.68.720242025202627 Jan 2026, 11:11: 8.3213 Feb 2026, 10:28: 8.3410 Mar 2026, 10:50: 8.6813 Apr 2026, 11:30: 8.51
Every result (4)
SampledResult as publishedReads as
13 Apr 2026, 11:308.51 8.51
10 Mar 2026, 10:508.68 8.68
13 Feb 2026, 10:288.34 8.34
27 Jan 2026, 11:118.32 8.32

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

below 0.03 mg/l (not detected above this)

Sampled 13 Apr 2026, 6 months ago · 4 results banked

0.030.03050.031mg/l20242025202627 Jan 2026, 11:11: 0.031 mg/l13 Feb 2026, 10:28: below 0.03 mg/l (not detected above this)10 Mar 2026, 10:50: below 0.03 mg/l (not detected above this)13 Apr 2026, 11:30: below 0.03 mg/l (not detected above this)
Every result (4)
SampledResult as publishedReads as
13 Apr 2026, 11:30<0.03 below 0.03 mg/l (not detected above this)
10 Mar 2026, 10:50<0.03 below 0.03 mg/l (not detected above this)
13 Feb 2026, 10:28<0.03 below 0.03 mg/l (not detected above this)
27 Jan 2026, 11:110.031 0.031 mg/l

Nitrate

as nitrogen (N) · code 0117 · mg/l

12.9 mg/l

Sampled 13 Apr 2026, 6 months ago · 4 results banked

1112131415mg/l20242025202627 Jan 2026, 11:11: 15 mg/l13 Feb 2026, 10:28: 13 mg/l10 Mar 2026, 10:50: 11 mg/l13 Apr 2026, 11:30: 12.9 mg/l
Every result (4)
SampledResult as publishedReads as
13 Apr 2026, 11:3012.9 12.9 mg/l
10 Mar 2026, 10:5011 11 mg/l
13 Feb 2026, 10:2813 13 mg/l
27 Jan 2026, 11:1115 15 mg/l

Phosphate

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

1.5 mg/l

Sampled 13 Apr 2026, 6 months ago · 4 results banked

00.511.5mg/l20242025202627 Jan 2026, 11:11: 0.14 mg/l13 Feb 2026, 10:28: 0.1 mg/l10 Mar 2026, 10:50: 0.17 mg/l13 Apr 2026, 11:30: 1.5 mg/l
Every result (4)
SampledResult as publishedReads as
13 Apr 2026, 11:301.5 1.5 mg/l
10 Mar 2026, 10:500.17 0.17 mg/l
13 Feb 2026, 10:280.1 0.1 mg/l
27 Jan 2026, 11:110.14 0.14 mg/l

Conductivity

at 25 °C · code 0077 · µS/cm

950 µS/cm

Sampled 13 Apr 2026, 6 months ago · 4 results banked

6007008009001000µS/cm20242025202627 Jan 2026, 11:11: 652 µS/cm13 Feb 2026, 10:28: 684 µS/cm10 Mar 2026, 10:50: 717 µS/cm13 Apr 2026, 11:30: 950 µS/cm
Every result (4)
SampledResult as publishedReads as
13 Apr 2026, 11:30950 950 µS/cm
10 Mar 2026, 10:50717 717 µS/cm
13 Feb 2026, 10:28684 684 µS/cm
27 Jan 2026, 11:11652 652 µS/cm

Everything measured here

21 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 21 rows
DeterminandMaterialResults First – lastLatest result
Oxygen, Dissolved, % Saturation 9901 River water 4 Jan 2026 – Apr 2026 104.4% 13 Apr 2026
Oxygen, Dissolved as O2 9924 River water 4 Jan 2026 – Apr 2026 12.2 mg/l 13 Apr 2026
Temperature of Water 0076 River water 4 Jan 2026 – Apr 2026 8.5 °C 13 Apr 2026
pH 0061 River water 4 Jan 2026 – Apr 2026 8.51 13 Apr 2026
Ammoniacal Nitrogen as N 0111 River water 4 Jan 2026 – Apr 2026 below 0.03 mg/l 13 Apr 2026
Nitrate as N 0117 River water 4 Jan 2026 – Apr 2026 12.9 mg/l 13 Apr 2026
Orthophosphate, reactive as P 0180 River water 4 Jan 2026 – Apr 2026 1.5 mg/l 13 Apr 2026
Conductivity at 25 C 0077 River water 4 Jan 2026 – Apr 2026 950 µS/cm 13 Apr 2026
Alkalinity to pH 4.5 as CaCO3 0162 River water 4 Jan 2026 – Apr 2026 260 mg/l 13 Apr 2026
Ammonia un-ionised as N 0119 River water 4 Jan 2026 – Apr 2026 below 0.00049 mg/l 13 Apr 2026
Carbon, Organic, Dissolved as C :- {DOC} 0301 River water 4 Jan 2026 – Apr 2026 6.6 mg/l 13 Apr 2026
Chloride 0172 River water 4 Jan 2026 – Apr 2026 89 mg/l 13 Apr 2026
Flow Type 2896 River water 8 Jan 2026 – Sep 2026 Dry 21 Sep 2026
GCMS Screen : Target Based multi-residue screening : Semi Quantitative 4994 River water 1 Feb 2026 – Feb 2026 1 text result 13 Feb 2026
Nitrite as N 0118 River water 4 Jan 2026 – Apr 2026 0.15 mg/l 13 Apr 2026
Nitrogen, Total as N 9686 River water 4 Jan 2026 – Apr 2026 15 mg/l 13 Apr 2026
Nitrogen, Total Oxidised as N 0116 River water 4 Jan 2026 – Apr 2026 13 mg/l 13 Apr 2026
No flow /No sample 7668 River water 5 May 2026 – Sep 2026 No flow/discharge at sampling point 21 Sep 2026
Phosphorus, Total as P 0348 River water 4 Jan 2026 – Apr 2026 1.6 mg/l 13 Apr 2026
Silica, reactive as SiO2 0182 River water 4 Jan 2026 – Apr 2026 0.41 mg/l 13 Apr 2026
Solids, Suspended at 105 C 0135 River water 4 Jan 2026 – Apr 2026 6.9 mg/l 13 Apr 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.