150 m upstream of Straits Inclosure Footbridge

EA name: SSN1742 150M U/S STRAITS INCLOSURE FB (also listed as “SSN1742 150M U/S STRAITS INCLOSURE FOOTBRIDGE”)
Environment Agency sampling point TH-SSN1742 · 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
28 Sep 2026, 14:4912 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
11 since 13 Feb 2026 Imported periods: 1 Oct 2023 – 9 Oct 2026. Samples outside them are not shown here.
Latest sample
River / running surface water Monitoring (national agency policy) · results completed 30 Sep 2026
Where
National Grid 479805, 139490As published, to the nearest 1 m. Open in a map
River, by its own name
Its name does not give one
River, by the map
An unnamed streamPlaced by position alone (the only river line close by), 0 m from the line.
Next gauge downstream
Tilford On the River Wey · 15 km along the river
Why it was sampled
Monitoring (national agency policy) (11 samples)

Results here were completed a median of 2 days after the sample was taken (2 to 42 days, 5 samples). 6 visits found no water to sample (recorded as “No flow”).

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

70.2%

Sampled 12 Jun 2026, 4 months ago · 5 results banked

708090100%20242025202613 Feb 2026, 16:39: 87.3%11 Mar 2026, 14:28: 96.6%7 Apr 2026, 13:43: 99.6%22 Apr 2026, 14:29: 92%12 Jun 2026, 15:33: 70.2%
Every result (5)
SampledResult as publishedReads as
12 Jun 2026, 15:3370.2 70.2%
22 Apr 2026, 14:2992 92%
7 Apr 2026, 13:4399.6 99.6%
11 Mar 2026, 14:2896.6 96.6%
13 Feb 2026, 16:3987.3 87.3%

Dissolved oxygen

as O2 · code 9924 · mg/l

7.06 mg/l

Sampled 12 Jun 2026, 4 months ago · 5 results banked

7891011mg/l20242025202613 Feb 2026, 16:39: 10.3 mg/l11 Mar 2026, 14:28: 10.7 mg/l7 Apr 2026, 13:43: 10.7 mg/l22 Apr 2026, 14:29: 10.3 mg/l12 Jun 2026, 15:33: 7.06 mg/l
Every result (5)
SampledResult as publishedReads as
12 Jun 2026, 15:337.06 7.06 mg/l
22 Apr 2026, 14:2910.3 10.3 mg/l
7 Apr 2026, 13:4310.7 10.7 mg/l
11 Mar 2026, 14:2810.7 10.7 mg/l
13 Feb 2026, 16:3910.3 10.3 mg/l

Water temperature

code 0076 · °C

15 °C

Sampled 12 Jun 2026, 4 months ago · 5 results banked

810121416°C20242025202613 Feb 2026, 16:39: 8 °C11 Mar 2026, 14:28: 10.7 °C7 Apr 2026, 13:43: 11.9 °C22 Apr 2026, 14:29: 10.4 °C12 Jun 2026, 15:33: 15 °C
Every result (5)
SampledResult as publishedReads as
12 Jun 2026, 15:3315 15 °C
22 Apr 2026, 14:2910.4 10.4 °C
7 Apr 2026, 13:4311.9 11.9 °C
11 Mar 2026, 14:2810.7 10.7 °C
13 Feb 2026, 16:398 8 °C

pH

code 0061

7.81

Sampled 12 Jun 2026, 4 months ago · 5 results banked

7.47.67.888.28.420242025202613 Feb 2026, 16:39: 7.5111 Mar 2026, 14:28: 7.817 Apr 2026, 13:43: 8.322 Apr 2026, 14:29: 8.2112 Jun 2026, 15:33: 7.81
Every result (5)
SampledResult as publishedReads as
12 Jun 2026, 15:337.81 7.81
22 Apr 2026, 14:298.21 8.21
7 Apr 2026, 13:438.3 8.3
11 Mar 2026, 14:287.81 7.81
13 Feb 2026, 16:397.51 7.51

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

below 0.03 mg/l (not detected above this)

Sampled 12 Jun 2026, 4 months ago · 4 results banked

-0.500.51mg/l20242025202613 Feb 2026, 16:39: below 0.03 mg/l (not detected above this)11 Mar 2026, 14:28: below 0.03 mg/l (not detected above this)22 Apr 2026, 14:29: below 0.03 mg/l (not detected above this)12 Jun 2026, 15:33: below 0.03 mg/l (not detected above this)
Every result (4)
SampledResult as publishedReads as
12 Jun 2026, 15:33<0.03 below 0.03 mg/l (not detected above this)
22 Apr 2026, 14:29<0.03 below 0.03 mg/l (not detected above this)
11 Mar 2026, 14:28<0.03 below 0.03 mg/l (not detected above this)
13 Feb 2026, 16:39<0.03 below 0.03 mg/l (not detected above this)

Nitrate

as nitrogen (N) · code 0117 · mg/l

4.28 mg/l

Sampled 12 Jun 2026, 4 months ago · 4 results banked

234567mg/l20242025202613 Feb 2026, 16:39: 2.6 mg/l11 Mar 2026, 14:28: 2.49 mg/l22 Apr 2026, 14:29: 6.09 mg/l12 Jun 2026, 15:33: 4.28 mg/l
Every result (4)
SampledResult as publishedReads as
12 Jun 2026, 15:334.28 4.28 mg/l
22 Apr 2026, 14:296.09 6.09 mg/l
11 Mar 2026, 14:282.49 2.49 mg/l
13 Feb 2026, 16:392.6 2.6 mg/l

Phosphate

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

0.19 mg/l

Sampled 12 Jun 2026, 4 months ago · 4 results banked

0.170.1750.180.1850.19mg/l20242025202613 Feb 2026, 16:39: 0.18 mg/l11 Mar 2026, 14:28: 0.17 mg/l22 Apr 2026, 14:29: 0.17 mg/l12 Jun 2026, 15:33: 0.19 mg/l
Every result (4)
SampledResult as publishedReads as
12 Jun 2026, 15:330.19 0.19 mg/l
22 Apr 2026, 14:290.17 0.17 mg/l
11 Mar 2026, 14:280.17 0.17 mg/l
13 Feb 2026, 16:390.18 0.18 mg/l

Conductivity

at 25 °C · code 0077 · µS/cm

600 µS/cm

Sampled 12 Jun 2026, 4 months ago · 5 results banked

300400500600700µS/cm20242025202613 Feb 2026, 16:39: 343 µS/cm11 Mar 2026, 14:28: 399 µS/cm7 Apr 2026, 13:43: 602 µS/cm22 Apr 2026, 14:29: 596 µS/cm12 Jun 2026, 15:33: 600 µS/cm
Every result (5)
SampledResult as publishedReads as
12 Jun 2026, 15:33600 600 µS/cm
22 Apr 2026, 14:29596 596 µS/cm
7 Apr 2026, 13:43602 602 µS/cm
11 Mar 2026, 14:28399 399 µS/cm
13 Feb 2026, 16:39343 343 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 5 Feb 2026 – Jun 2026 70.2% 12 Jun 2026
Oxygen, Dissolved as O2 9924 River water 5 Feb 2026 – Jun 2026 7.06 mg/l 12 Jun 2026
Temperature of Water 0076 River water 5 Feb 2026 – Jun 2026 15 °C 12 Jun 2026
pH 0061 River water 5 Feb 2026 – Jun 2026 7.81 12 Jun 2026
Ammoniacal Nitrogen as N 0111 River water 4 Feb 2026 – Jun 2026 below 0.03 mg/l 12 Jun 2026
Nitrate as N 0117 River water 4 Feb 2026 – Jun 2026 4.28 mg/l 12 Jun 2026
Orthophosphate, reactive as P 0180 River water 4 Feb 2026 – Jun 2026 0.19 mg/l 12 Jun 2026
Conductivity at 25 C 0077 River water 5 Feb 2026 – Jun 2026 600 µS/cm 12 Jun 2026
Alkalinity to pH 4.5 as CaCO3 0162 River water 4 Feb 2026 – Jun 2026 250 mg/l 12 Jun 2026
Aminomethylphosphonic acid 7125 River water 2 Feb 2026 – Mar 2026 below 0.1 µg/l 11 Mar 2026
Ammonia un-ionised as N 0119 River water 4 Feb 2026 – Jun 2026 below 0.00051 mg/l 12 Jun 2026
Carbon, Organic, Dissolved as C :- {DOC} 0301 River water 4 Feb 2026 – Jun 2026 3.7 mg/l 12 Jun 2026
Chloride 0172 River water 4 Feb 2026 – Jun 2026 16 mg/l 12 Jun 2026
Flow Type 2896 River water 9 Feb 2026 – Sep 2026 Dry 28 Sep 2026
Glyphosate 3007 River water 2 Feb 2026 – Mar 2026 below 0.1 µg/l 11 Mar 2026
LCMS Screen : Semi Quantitative 7299 River water 2 Mar 2026 – Jun 2026 1 text result 12 Jun 2026
Nitrite as N 0118 River water 4 Feb 2026 – Jun 2026 0.022 mg/l 12 Jun 2026
Nitrogen, Total as N 9686 River water 4 Feb 2026 – Jun 2026 4.8 mg/l 12 Jun 2026
Nitrogen, Total Oxidised as N 0116 River water 4 Feb 2026 – Jun 2026 4.3 mg/l 12 Jun 2026
No flow /No sample 7668 River water 6 May 2026 – Sep 2026 No flow/discharge at sampling point 28 Sep 2026
Phosphorus, Total as P 0348 River water 4 Feb 2026 – Jun 2026 0.2 mg/l 12 Jun 2026
Silica, reactive as SiO2 0182 River water 4 Feb 2026 – Jun 2026 27 mg/l 12 Jun 2026
Solids, Suspended at 105 C 0135 River water 4 Feb 2026 – Jun 2026 17 mg/l 12 Jun 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.