200 m upstream of Childrey Brook

EA name: SSN0399 200M U/S CHILDREY BROOK
Environment Agency sampling point TH-SSN0399 · 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
18 Sep 2026, 16:0713 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
9 since 15 Jan 2026 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) · results completed 22 Sep 2026
Where
National Grid 443184, 194711As 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
Hanney DitchPlaced by position alone (the only river line close by), 6 m from the line.
Next gauge downstream
Abingdon On the River Ock · 6.2 km along the river
Why it was sampled
Monitoring (national agency policy) (9 samples)

Results here were completed a median of 7 days after the sample was taken (2 to 50 days, 9 samples). 4 visits found no water to sample (recorded as “No flow”).

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

47.1%

Sampled 16 Jun 2026, 4 months ago · 5 results banked

406080100120%20242025202615 Jan 2026, 12:24: 81.5%12 Mar 2026, 11:42: 102.1%17 Apr 2026, 12:54: 90.5%28 May 2026, 14:39: 95.1%16 Jun 2026, 14:07: 47.1%
Every result (5)
SampledResult as publishedReads as
16 Jun 2026, 14:0747.1 47.1%
28 May 2026, 14:3995.1 95.1%
17 Apr 2026, 12:5490.5 90.5%
12 Mar 2026, 11:42102.1 102.1%
15 Jan 2026, 12:2481.5 81.5%

Dissolved oxygen

as O2 · code 9924 · mg/l

4.48 mg/l

Sampled 16 Jun 2026, 4 months ago · 5 results banked

4681012mg/l20242025202615 Jan 2026, 12:24: 9.93 mg/l12 Mar 2026, 11:42: 11.9 mg/l17 Apr 2026, 12:54: 9.58 mg/l28 May 2026, 14:39: 8.37 mg/l16 Jun 2026, 14:07: 4.48 mg/l
Every result (5)
SampledResult as publishedReads as
16 Jun 2026, 14:074.48 4.48 mg/l
28 May 2026, 14:398.37 8.37 mg/l
17 Apr 2026, 12:549.58 9.58 mg/l
12 Mar 2026, 11:4211.9 11.9 mg/l
15 Jan 2026, 12:249.93 9.93 mg/l

Water temperature

code 0076 · °C

17.6 °C

Sampled 16 Jun 2026, 4 months ago · 5 results banked

510152025°C20242025202615 Jan 2026, 12:24: 6.8 °C12 Mar 2026, 11:42: 8.7 °C17 Apr 2026, 12:54: 12.7 °C28 May 2026, 14:39: 21.5 °C16 Jun 2026, 14:07: 17.6 °C
Every result (5)
SampledResult as publishedReads as
16 Jun 2026, 14:0717.6 17.6 °C
28 May 2026, 14:3921.5 21.5 °C
17 Apr 2026, 12:5412.7 12.7 °C
12 Mar 2026, 11:428.7 8.7 °C
15 Jan 2026, 12:246.8 6.8 °C

pH

code 0061

7.52

Sampled 16 Jun 2026, 4 months ago · 5 results banked

7.47.67.888.220242025202615 Jan 2026, 12:24: 7.812 Mar 2026, 11:42: 8.1917 Apr 2026, 12:54: 7.728 May 2026, 14:39: 7.6916 Jun 2026, 14:07: 7.52
Every result (5)
SampledResult as publishedReads as
16 Jun 2026, 14:077.52 7.52
28 May 2026, 14:397.69 7.69
17 Apr 2026, 12:547.7 7.7
12 Mar 2026, 11:428.19 8.19
15 Jan 2026, 12:247.8 7.8

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

0.096 mg/l

Sampled 16 Jun 2026, 4 months ago · 5 results banked

0.020.040.060.080.1mg/l20242025202615 Jan 2026, 12:24: below 0.03 mg/l (not detected above this)12 Mar 2026, 11:42: below 0.03 mg/l (not detected above this)17 Apr 2026, 12:54: below 0.03 mg/l (not detected above this)28 May 2026, 14:39: 0.047 mg/l16 Jun 2026, 14:07: 0.096 mg/l
Every result (5)
SampledResult as publishedReads as
16 Jun 2026, 14:070.096 0.096 mg/l
28 May 2026, 14:390.047 0.047 mg/l
17 Apr 2026, 12:54<0.03 below 0.03 mg/l (not detected above this)
12 Mar 2026, 11:42<0.03 below 0.03 mg/l (not detected above this)
15 Jan 2026, 12:24<0.03 below 0.03 mg/l (not detected above this)

Nitrate

as nitrogen (N) · code 0117 · mg/l

0.189 mg/l

Sampled 16 Jun 2026, 4 months ago · 5 results banked

051015mg/l20242025202615 Jan 2026, 12:24: 11 mg/l12 Mar 2026, 11:42: 3.6 mg/l17 Apr 2026, 12:54: 6.49 mg/l28 May 2026, 14:39: below 0.196 mg/l (not detected above this)16 Jun 2026, 14:07: 0.189 mg/l
Every result (5)
SampledResult as publishedReads as
16 Jun 2026, 14:070.189 0.189 mg/l
28 May 2026, 14:39<0.196 below 0.196 mg/l (not detected above this)
17 Apr 2026, 12:546.49 6.49 mg/l
12 Mar 2026, 11:423.6 3.6 mg/l
15 Jan 2026, 12:2411 11 mg/l

Phosphate

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

0.27 mg/l

Sampled 16 Jun 2026, 4 months ago · 5 results banked

00.10.20.30.4mg/l20242025202615 Jan 2026, 12:24: 0.14 mg/l12 Mar 2026, 11:42: 0.1 mg/l17 Apr 2026, 12:54: 0.041 mg/l28 May 2026, 14:39: 0.32 mg/l16 Jun 2026, 14:07: 0.27 mg/l
Every result (5)
SampledResult as publishedReads as
16 Jun 2026, 14:070.27 0.27 mg/l
28 May 2026, 14:390.32 0.32 mg/l
17 Apr 2026, 12:540.041 0.041 mg/l
12 Mar 2026, 11:420.1 0.1 mg/l
15 Jan 2026, 12:240.14 0.14 mg/l

Conductivity

at 25 °C · code 0077 · µS/cm

815 µS/cm

Sampled 16 Jun 2026, 4 months ago · 5 results banked

700750800850900µS/cm20242025202615 Jan 2026, 12:24: 794 µS/cm12 Mar 2026, 11:42: 793 µS/cm17 Apr 2026, 12:54: 855 µS/cm28 May 2026, 14:39: 721 µS/cm16 Jun 2026, 14:07: 815 µS/cm
Every result (5)
SampledResult as publishedReads as
16 Jun 2026, 14:07815 815 µS/cm
28 May 2026, 14:39721 721 µS/cm
17 Apr 2026, 12:54855 855 µS/cm
12 Mar 2026, 11:42793 793 µS/cm
15 Jan 2026, 12:24794 794 µS/cm

Everything measured here

48 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 48 rows
DeterminandMaterialResults First – lastLatest result
Oxygen, Dissolved, % Saturation 9901 River water 5 Jan 2026 – Jun 2026 47.1% 16 Jun 2026
Oxygen, Dissolved as O2 9924 River water 5 Jan 2026 – Jun 2026 4.48 mg/l 16 Jun 2026
Temperature of Water 0076 River water 5 Jan 2026 – Jun 2026 17.6 °C 16 Jun 2026
pH 0061 River water 5 Jan 2026 – Jun 2026 7.52 16 Jun 2026
Ammoniacal Nitrogen as N 0111 River water 5 Jan 2026 – Jun 2026 0.096 mg/l 16 Jun 2026
Nitrate as N 0117 River water 5 Jan 2026 – Jun 2026 0.189 mg/l 16 Jun 2026
Orthophosphate, reactive as P 0180 River water 5 Jan 2026 – Jun 2026 0.27 mg/l 16 Jun 2026
Conductivity at 25 C 0077 River water 5 Jan 2026 – Jun 2026 815 µS/cm 16 Jun 2026
Alkalinity to pH 4.5 as CaCO3 0162 River water 5 Jan 2026 – Jun 2026 340 mg/l 16 Jun 2026
Aluminium, Dissolved 6037 River water 1 Jan 2026 – Jan 2026 below 20 µg/l 15 Jan 2026
Aminomethylphosphonic acid 7125 River water 3 Jan 2026 – Apr 2026 0.21 µg/l 17 Apr 2026
Ammonia un-ionised as N 0119 River water 5 Jan 2026 – Jun 2026 0.00103 mg/l 16 Jun 2026
Barium, Dissolved 9446 River water 1 Jan 2026 – Jan 2026 13 µg/l 15 Jan 2026
Boron, Dissolved 9447 River water 1 Jan 2026 – Jan 2026 below 100 µg/l 15 Jan 2026
Cadmium, Dissolved 0106 River water 1 Jan 2026 – Jan 2026 0.012 µg/l 15 Jan 2026
Calcium, Dissolved 0239 River water 1 Jan 2026 – Jan 2026 140 mg/l 15 Jan 2026
Carbon, Organic, Dissolved as C :- {DOC} 0301 River water 5 Jan 2026 – Jun 2026 7.6 mg/l 16 Jun 2026
Chloride 0172 River water 5 Jan 2026 – Jun 2026 27 mg/l 16 Jun 2026
Chromium, Dissolved 3409 River water 1 Jan 2026 – Jan 2026 below 0.5 µg/l 15 Jan 2026
Copper : BLM Bioavailable 4821 River water 1 Jan 2026 – Jan 2026 0.1 µg/l 15 Jan 2026
Copper, Dissolved 6450 River water 1 Jan 2026 – Jan 2026 2.4 µg/l 15 Jan 2026
Flow Type 2896 River water 8 Jan 2026 – Sep 2026 Dry 18 Sep 2026
GCMS Screen : Target Based multi-residue screening : Semi Quantitative 4994 River water 1 Jun 2026 – Jun 2026 1 text result 16 Jun 2026
Glyphosate 3007 River water 3 Jan 2026 – Apr 2026 0.13 µg/l 17 Apr 2026
Hardness, Calcium 0163 River water 1 Jan 2026 – Jan 2026 350 mg/l 15 Jan 2026
Hardness, Total as CaCO3 0158 River water 1 Jan 2026 – Jan 2026 369 mg/l 15 Jan 2026
Iron, Dissolved 6460 River water 1 Jan 2026 – Jan 2026 below 30 µg/l 15 Jan 2026
Lead : BLM Bioavailable 3377 River water 1 Jan 2026 – Jan 2026 0.01 µg/l 15 Jan 2026
Lead, Dissolved 0052 River water 1 Jan 2026 – Jan 2026 below 0.1 µg/l 15 Jan 2026
Lithium, Dissolved 4201 River water 1 Jan 2026 – Jan 2026 below 100 µg/l 15 Jan 2026
Magnesium, Dissolved 0235 River water 1 Jan 2026 – Jan 2026 4.6 mg/l 15 Jan 2026
Manganese : BLM Bioavailable 4820 River water 1 Jan 2026 – Jan 2026 1.9 µg/l 15 Jan 2026
Manganese, Dissolved 6458 River water 1 Jan 2026 – Jan 2026 below 10 µg/l 15 Jan 2026
Nickel : BLM Bioavailable 3878 River water 1 Jan 2026 – Jan 2026 0.6 µg/l 15 Jan 2026
Nickel, Dissolved 3410 River water 1 Jan 2026 – Jan 2026 2.1 µg/l 15 Jan 2026
Nitrite as N 0118 River water 5 Jan 2026 – Jun 2026 0.011 mg/l 16 Jun 2026
Nitrogen, Total as N 9686 River water 5 Jan 2026 – Jun 2026 0.7 mg/l 16 Jun 2026
Nitrogen, Total Oxidised as N 0116 River water 5 Jan 2026 – Jun 2026 below 0.2 mg/l 16 Jun 2026
No flow /No sample 7668 River water 4 Jul 2026 – Sep 2026 No flow/discharge at sampling point 18 Sep 2026
Phosphorus, Total as P 0348 River water 5 Jan 2026 – Jun 2026 0.3 mg/l 16 Jun 2026
Potassium, Dissolved 0209 River water 1 Jan 2026 – Jan 2026 2.5 mg/l 15 Jan 2026
Silica, reactive as SiO2 0182 River water 5 Jan 2026 – Jun 2026 32 mg/l 16 Jun 2026
Sodium, Dissolved 0205 River water 1 Jan 2026 – Jan 2026 25 mg/l 15 Jan 2026
Solids, Suspended at 105 C 0135 River water 5 Jan 2026 – Jun 2026 7.4 mg/l 16 Jun 2026
Strontium, Filtered 6693 River water 1 Jan 2026 – Jan 2026 530 µg/l 15 Jan 2026
Sulphate, Dissolved as SO4 7859 River water 1 Jan 2026 – Jan 2026 62 mg/l 15 Jan 2026
Zinc : BLM Bioavailable 4822 River water 1 Jan 2026 – Jan 2026 0.35 µg/l 15 Jan 2026
Zinc, Dissolved 3408 River water 1 Jan 2026 – Jan 2026 1 µg/l 15 Jan 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.