New Ollerton

EA name: NEW OLLERTON (also listed as “RSN0052 NEW OLLERTON”)
Environment Agency sampling point MD-RSN0052 · 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
7 Aug 2026, 11:412 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
8 since 29 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)
Where
National Grid 466330, 370068As 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
River MaunPlaced by position alone, on a line whose map name differs from its own, 4 m from the line.
Next gauge downstream
Whitewater Bridge On the River Maun · 0.4 km along the river
Nearest gauge upstream
Mansfield The Dykes On the River Maun · 14 km along the river
Why it was sampled
Monitoring (national agency policy) (8 samples)

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

112.5%

Sampled 7 Aug 2026, 2 months ago · 8 results banked

95100105110115%20242025202629 Jan 2026, 10:22: 96.1%18 Feb 2026, 11:14: 98.1%5 Mar 2026, 13:11: 101%8 Apr 2026, 12:02: 110.4%15 May 2026, 08:43: 100.6%9 Jun 2026, 11:21: 106.9%3 Jul 2026, 10:09: 110.4%7 Aug 2026, 11:41: 112.5%
Every result (8)
SampledResult as publishedReads as
7 Aug 2026, 11:41112.5 112.5%
3 Jul 2026, 10:09110.4 110.4%
9 Jun 2026, 11:21106.9 106.9%
15 May 2026, 08:43100.6 100.6%
8 Apr 2026, 12:02110.4 110.4%
5 Mar 2026, 13:11101 101%
18 Feb 2026, 11:1498.1 98.1%
29 Jan 2026, 10:2296.1 96.1%

Dissolved oxygen

as O2 · code 9924 · mg/l

11.1 mg/l

Sampled 7 Aug 2026, 2 months ago · 8 results banked

10.51111.51212.5mg/l20242025202629 Jan 2026, 10:22: 11.9 mg/l18 Feb 2026, 11:14: 12.2 mg/l5 Mar 2026, 13:11: 11.2 mg/l8 Apr 2026, 12:02: 12 mg/l15 May 2026, 08:43: 11 mg/l9 Jun 2026, 11:21: 10.9 mg/l3 Jul 2026, 10:09: 10.7 mg/l7 Aug 2026, 11:41: 11.1 mg/l
Every result (8)
SampledResult as publishedReads as
7 Aug 2026, 11:4111.1 11.1 mg/l
3 Jul 2026, 10:0910.7 10.7 mg/l
9 Jun 2026, 11:2110.9 10.9 mg/l
15 May 2026, 08:4311 11 mg/l
8 Apr 2026, 12:0212 12 mg/l
5 Mar 2026, 13:1111.2 11.2 mg/l
18 Feb 2026, 11:1412.2 12.2 mg/l
29 Jan 2026, 10:2211.9 11.9 mg/l

Water temperature

code 0076 · °C

15.9 °C

Sampled 7 Aug 2026, 2 months ago · 8 results banked

5101520°C20242025202629 Jan 2026, 10:22: 6.2 °C18 Feb 2026, 11:14: 5.8 °C5 Mar 2026, 13:11: 10.7 °C8 Apr 2026, 12:02: 11.3 °C15 May 2026, 08:43: 11.2 °C9 Jun 2026, 11:21: 14.3 °C3 Jul 2026, 10:09: 16.9 °C7 Aug 2026, 11:41: 15.9 °C
Every result (8)
SampledResult as publishedReads as
7 Aug 2026, 11:4115.9 15.9 °C
3 Jul 2026, 10:0916.9 16.9 °C
9 Jun 2026, 11:2114.3 14.3 °C
15 May 2026, 08:4311.2 11.2 °C
8 Apr 2026, 12:0211.3 11.3 °C
5 Mar 2026, 13:1110.7 10.7 °C
18 Feb 2026, 11:145.8 5.8 °C
29 Jan 2026, 10:226.2 6.2 °C

pH

code 0061

8.71

Sampled 7 Aug 2026, 2 months ago · 8 results banked

88.28.48.68.820242025202629 Jan 2026, 10:22: 8.2118 Feb 2026, 11:14: 8.165 Mar 2026, 13:11: 8.298 Apr 2026, 12:02: 8.5315 May 2026, 08:43: 8.299 Jun 2026, 11:21: 8.273 Jul 2026, 10:09: 8.427 Aug 2026, 11:41: 8.71
Every result (8)
SampledResult as publishedReads as
7 Aug 2026, 11:418.71 8.71
3 Jul 2026, 10:098.42 8.42
9 Jun 2026, 11:218.27 8.27
15 May 2026, 08:438.29 8.29
8 Apr 2026, 12:028.53 8.53
5 Mar 2026, 13:118.29 8.29
18 Feb 2026, 11:148.16 8.16
29 Jan 2026, 10:228.21 8.21

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

below 0.03 mg/l (not detected above this)

Sampled 7 Aug 2026, 2 months ago · 8 results banked

00.050.10.150.2mg/l20242025202629 Jan 2026, 10:22: 0.17 mg/l18 Feb 2026, 11:14: 0.2 mg/l5 Mar 2026, 13:11: 0.08 mg/l8 Apr 2026, 12:02: below 0.03 mg/l (not detected above this)15 May 2026, 08:43: 0.053 mg/l9 Jun 2026, 11:21: 0.05 mg/l3 Jul 2026, 10:09: below 0.03 mg/l (not detected above this)7 Aug 2026, 11:41: below 0.03 mg/l (not detected above this)
Every result (8)
SampledResult as publishedReads as
7 Aug 2026, 11:41<0.03 below 0.03 mg/l (not detected above this)
3 Jul 2026, 10:09<0.03 below 0.03 mg/l (not detected above this)
9 Jun 2026, 11:210.05 0.05 mg/l
15 May 2026, 08:430.053 0.053 mg/l
8 Apr 2026, 12:02<0.03 below 0.03 mg/l (not detected above this)
5 Mar 2026, 13:110.08 0.08 mg/l
18 Feb 2026, 11:140.2 0.2 mg/l
29 Jan 2026, 10:220.17 0.17 mg/l

Nitrate

as nitrogen (N) · code 0117 · mg/l

15.9 mg/l

Sampled 7 Aug 2026, 2 months ago · 8 results banked

10121416mg/l20242025202629 Jan 2026, 10:22: 10.9 mg/l18 Feb 2026, 11:14: 11.8 mg/l5 Mar 2026, 13:11: 13 mg/l8 Apr 2026, 12:02: 14 mg/l15 May 2026, 08:43: 12.9 mg/l9 Jun 2026, 11:21: 10.9 mg/l3 Jul 2026, 10:09: 14 mg/l7 Aug 2026, 11:41: 15.9 mg/l
Every result (8)
SampledResult as publishedReads as
7 Aug 2026, 11:4115.9 15.9 mg/l
3 Jul 2026, 10:0914 14 mg/l
9 Jun 2026, 11:2110.9 10.9 mg/l
15 May 2026, 08:4312.9 12.9 mg/l
8 Apr 2026, 12:0214 14 mg/l
5 Mar 2026, 13:1113 13 mg/l
18 Feb 2026, 11:1411.8 11.8 mg/l
29 Jan 2026, 10:2210.9 10.9 mg/l

Phosphate

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

0.5 mg/l

Sampled 7 Aug 2026, 2 months ago · 8 results banked

0.20.30.40.50.6mg/l20242025202629 Jan 2026, 10:22: 0.22 mg/l18 Feb 2026, 11:14: 0.25 mg/l5 Mar 2026, 13:11: 0.27 mg/l8 Apr 2026, 12:02: 0.37 mg/l15 May 2026, 08:43: 0.57 mg/l9 Jun 2026, 11:21: 0.56 mg/l3 Jul 2026, 10:09: 0.49 mg/l7 Aug 2026, 11:41: 0.5 mg/l
Every result (8)
SampledResult as publishedReads as
7 Aug 2026, 11:410.5 0.5 mg/l
3 Jul 2026, 10:090.49 0.49 mg/l
9 Jun 2026, 11:210.56 0.56 mg/l
15 May 2026, 08:430.57 0.57 mg/l
8 Apr 2026, 12:020.37 0.37 mg/l
5 Mar 2026, 13:110.27 0.27 mg/l
18 Feb 2026, 11:140.25 0.25 mg/l
29 Jan 2026, 10:220.22 0.22 mg/l

Conductivity

at 25 °C · code 0077 · µS/cm

947 µS/cm

Sampled 7 Aug 2026, 2 months ago · 8 results banked

7508008509009501000µS/cm20242025202629 Jan 2026, 10:22: 785 µS/cm18 Feb 2026, 11:14: 851 µS/cm5 Mar 2026, 13:11: 870 µS/cm8 Apr 2026, 12:02: 978 µS/cm15 May 2026, 08:43: 895 µS/cm9 Jun 2026, 11:21: 806 µS/cm3 Jul 2026, 10:09: 941 µS/cm7 Aug 2026, 11:41: 947 µS/cm
Every result (8)
SampledResult as publishedReads as
7 Aug 2026, 11:41947 947 µS/cm
3 Jul 2026, 10:09941 941 µS/cm
9 Jun 2026, 11:21806 806 µS/cm
15 May 2026, 08:43895 895 µS/cm
8 Apr 2026, 12:02978 978 µS/cm
5 Mar 2026, 13:11870 870 µS/cm
18 Feb 2026, 11:14851 851 µS/cm
29 Jan 2026, 10:22785 785 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 8 Jan 2026 – Aug 2026 112.5% 7 Aug 2026
Oxygen, Dissolved as O2 9924 River water 8 Jan 2026 – Aug 2026 11.1 mg/l 7 Aug 2026
Temperature of Water 0076 River water 8 Jan 2026 – Aug 2026 15.9 °C 7 Aug 2026
pH 0061 River water 8 Jan 2026 – Aug 2026 8.71 7 Aug 2026
Ammoniacal Nitrogen as N 0111 River water 8 Jan 2026 – Aug 2026 below 0.03 mg/l 7 Aug 2026
Nitrate as N 0117 River water 8 Jan 2026 – Aug 2026 15.9 mg/l 7 Aug 2026
Orthophosphate, reactive as P 0180 River water 8 Jan 2026 – Aug 2026 0.5 mg/l 7 Aug 2026
Conductivity at 25 C 0077 River water 8 Jan 2026 – Aug 2026 947 µS/cm 7 Aug 2026
Alkalinity to pH 4.5 as CaCO3 0162 River water 8 Jan 2026 – Aug 2026 150 mg/l 7 Aug 2026
Ammonia un-ionised as N 0119 River water 8 Jan 2026 – Aug 2026 below 0.00084 mg/l 7 Aug 2026
Carbon, Organic, Dissolved as C :- {DOC} 0301 River water 8 Jan 2026 – Aug 2026 3.6 mg/l 7 Aug 2026
Chloride 0172 River water 7 Jan 2026 – Jul 2026 110 mg/l 3 Jul 2026
Flow Type 2896 River water 8 Jan 2026 – Aug 2026 Low Flow 7 Aug 2026
GCMS Screen : Target Based multi-residue screening : Semi Quantitative 4994 River water 3 Feb 2026 – Aug 2026 1 text result 7 Aug 2026
LCMS Screen : Semi Quantitative 7299 River water 1 Jun 2026 – Jun 2026 1 text result 9 Jun 2026
Nitrite as N 0118 River water 8 Jan 2026 – Aug 2026 0.053 mg/l 7 Aug 2026
Nitrogen, Total as N 9686 River water 8 Jan 2026 – Aug 2026 18 mg/l 7 Aug 2026
Nitrogen, Total Oxidised as N 0116 River water 8 Jan 2026 – Aug 2026 16 mg/l 7 Aug 2026
Phosphorus, Total as P 0348 River water 8 Jan 2026 – Aug 2026 0.49 mg/l 7 Aug 2026
Silica, reactive as SiO2 0182 River water 8 Jan 2026 – Aug 2026 6.6 mg/l 7 Aug 2026
Solids, Suspended at 105 C 0135 River water 8 Jan 2026 – Aug 2026 4 mg/l 7 Aug 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.