sampling point
Marston Meysey Brook At Roadbridge Below

Description	MARSTON MEYSEY BROOK AT ROADBRIDGE BELOW MARSTON MEYSEY
Sampling point ID	TH-PUTR0227
Type	Freshwater – Rivers
Status	open
Location	easting northing: 412800 196400 lat lon: 51.666229, -1.816318
Area	West Thames
Sub-Area	L&W North Wt
Summary	116 samples taken between 2024 and 2000

Determinands identify a property which can be measured on a sample or the sampling environment, together with the units in which the result of that measurement will be expressed.

19 determinands have been measured at this site

Action taken
Alky pH 4.5
Ammonia(N)
BOD ATU
Chloride Ion
Cond @ 25C
N Oxidised
NH3 un-ion
NO FLOW/SAMP
Nitrate-N
Nitrite-N
O Diss %sat
Orthophospht
Oxygen Diss
SI-GQA
Temp Water
Type of Flow
pH
pH in-situ

Displaying the twenty most recent samples. You can see all 116 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 16 Oct 2023 to 15 Jul 2024

Notation	Determinand	Units	16 Oct 2023 14:23	30 Oct 2023 10:19	27 Nov 2023 09:20	11 Dec 2023 10:19	15 Jan 2024 09:07	23 Feb 2024 10:09	22 Mar 2024 13:04	16 Apr 2024 09:44	20 May 2024 11:59	15 Jul 2024 12:55
0061	pH		8.01	7.79	7.95	7.84	8.15	7.94	8.24	8.06	8.04	8.04
0076	Temperature of Water	°C	10.7	11.4	9.7	8.9	6.5	7.2	10.3	9.7	13.1	12.4
0077	Conductivity at 25 C	μs/cm	641	634	644	602	624	532	625	629	616	604
0085	BOD : 5 Day ATU	mg/l						1.1	< 1	< 1	< 1	< 1
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	< 0.03	< 0.03	< 0.03	0.044	0.036	< 0.03	< 0.03	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	7.4	7.6	6.2	6.9	5.9	5.5	5.1	4.4	2.8	2
0117	Nitrate as N	mg/l	7.39	7.59	6.19	6.89	5.89	5.49	5.09	4.39	2.78	1.99
0118	Nitrite as N	mg/l	0.014	0.015	0.015	0.011	0.014	0.0091	0.012	0.015	0.019	0.011
0119	Ammonia un-ionised as N	mg/l	< 0.00058	< 0.00038	< 0.00048	< 0.00035	0.00062	0.00047	< 0.00056	< 0.00054	< 0.00069	< 0.00065
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	260	250	260	250	270	240	260	250	260	240
0180	Orthophosphate, reactive as P	mg/l	0.013	0.025	0.018	0.032	0.02	0.03	< 0.01	< 0.01	< 0.01	< 0.01
9901	Oxygen, Dissolved, % Saturation	%	92.4	88.5	89.5	88	95.3	91.6	96.7	96.3	98.8	96.9
9924	Oxygen, Dissolved as O2	mg/l	10.2	9.65	10.2	10.2	11.7	11	10.8	10.9	10.4	10.3

Samples from 2 Jul 2019 to 11 Sep 2023

Notation	Determinand	Units	2 Jul 2019 09:28	29 Oct 2019 10:49	13 Dec 2019 11:54	22 Jan 2020 10:46	10 Mar 2020 10:16	22 May 2023 10:38	19 Jun 2023 12:02	17 Jul 2023 13:11	8 Aug 2023 11:26	11 Sep 2023 11:11
0061	pH		8.16	7.95	7.88	8.22	7.88	8.01	8.01	8.27	8.16	8.29
0076	Temperature of Water	°C	14.2	9.6	6.6	7.5	8.8	11.5	13.9	13.4	12.5	14.5
0077	Conductivity at 25 C	μs/cm	740	702	498	667	438	620	542	592	600	590
0085	BOD : 5 Day ATU	mg/l							< 3
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	< 0.03	< 0.03	< 0.03	0.081	0.034	< 0.03	< 0.03	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	19	16	9.6	12	5.3	3.9	1.9	1.9	2.3	1.7
0117	Nitrate as N	mg/l	18.9	16	9.59	12	5.29	3.88	1.88	1.88	2.28	1.69
0118	Nitrite as N	mg/l	0.056	0.012	0.0086	0.0055	0.011	0.02	0.019	0.016	0.016	0.0062
0119	Ammonia un-ionised as N	mg/l	< 0.00074	< 0.00047	< 0.00032	< 0.00046	0.00103	0.00069	< 0.00073	< 0.0007	< 0.00066	< 0.00076
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	240	250	170	260	190	250	230	230	240	230
0180	Orthophosphate, reactive as P	mg/l	0.039	0.019	0.043	0.018	0.058	< 0.01	< 0.01	< 0.01	0.016	< 0.01
9901	Oxygen, Dissolved, % Saturation	%	86.9	97.4	89.8	88.4	81.4	94.3	95.8	94.9	93.3	95.5
9924	Oxygen, Dissolved as O2	mg/l	8.89	11.1	11	10.6	9.44	10.3	9.87	9.89	9.92	9.71

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sampling point Marston Meysey Brook At Roadbridge Below

Determinands

Sampling results

Samples from 16 Oct 2023 to 15 Jul 2024

Samples from 2 Jul 2019 to 11 Sep 2023

sampling point
Marston Meysey Brook At Roadbridge Below