sampling point
Marcham Brook At Mill Road, Marcham

Description	MARCHAM BROOK AT MILL ROAD, MARCHAM
Sampling point ID	TH-POCR0011
Type	Freshwater – Rivers
Status	open
Location	easting northing: 445535 196123 lat lon: 51.662046, -1.343066
Area	West Thames
Sub-Area	L&W North Wt
Summary	164 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.

35 determinands have been measured at this site

Action taken
Alky pH 4.5
Ammonia(N)
Anions
B - Filtered
BOD ATU
C - Organic
CHLOR A
Ca Filtered
Cations
Chloride Ion
Cond @ 20C
Cond @ 25C
Fe- Filt
Fluoride - F
Hardness
IonicBalance
K- Filtered
Mg Filtered
Mn- Filtered
N Oxidised
NH3 un-ion
Na- Filtered
Nitrate-N
Nitrite-N
O Diss %sat
Orthophospht
Oxygen Diss
SI-G2
SI-GQA
Sulphate SO4
Temp Water
Type of Flow
pH
pH in-situ

Displaying the twenty most recent samples. You can see all 164 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 18 Sep 2023 to 8 Jul 2024

Notation	Determinand	Units	18 Sep 2023 10:17	5 Oct 2023 11:12	27 Oct 2023 11:01	16 Nov 2023 14:15	5 Dec 2023 13:09	18 Jan 2024 11:44	2 Feb 2024 12:12	1 Mar 2024 09:47	13 Jun 2024 10:13	8 Jul 2024 13:41
0061	pH		8.77	7.92	7.96	7.8	7.78	7.94	7.93	7.95	8.35	7.88
0076	Temperature of Water	°C	15.7	13.7	11	9.1	7.3	3.3	8.3	7.2	12.4	15
0077	Conductivity at 25 C	μs/cm	800	874	864	805	825	866	837	810	842	773
0085	BOD : 5 Day ATU	mg/l		1.2		1.1	2.3	1.5	1.5	1.7	1.4	< 2
0111	Ammoniacal Nitrogen as N	mg/l	0.05	0.036	0.064	0.26	0.24	0.34	0.16	0.31	< 0.03	0.07
0116	Nitrogen, Total Oxidised as N	mg/l	8.9	7.7	5.8	5.4	5.7	6.7	6.9	5.5	7.4	5.1
0117	Nitrate as N	mg/l	8.85	7.67	5.77	5.27	5.58	6.61	6.84	5.38	7.37	5.07
0118	Nitrite as N	mg/l	0.047	0.026	0.029	0.13	0.12	0.086	0.065	0.12	0.027	0.035
0119	Ammonia un-ionised as N	mg/l	0.00138	0.00072	0.00115	0.00282	0.00218	0.0033	0.0022	0.00411	< 0.00065	0.0014
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	210	260	290	290	280	290	280	280	270	250
0180	Orthophosphate, reactive as P	mg/l	0.89	0.73	0.3	0.21	0.28	0.27	0.28	0.25	0.49	0.42
9901	Oxygen, Dissolved, % Saturation	%	71.7	80.2	86.7	75.8	81.7	83.3	89.6	84.5	100.3	90.4
9924	Oxygen, Dissolved as O2	mg/l	7.1	8.3	9.54	8.73	9.83	11.1	10.5	10.2	10.7	9.09

Samples from 8 Oct 2019 to 4 Sep 2023

Notation	Determinand	Units	8 Oct 2019 13:20	11 Nov 2019 08:30	2 Dec 2019 14:41	8 Jan 2020 08:30	11 Feb 2020 08:50	2 Mar 2020 09:57	1 Jun 2023 13:03	10 Jul 2023 09:02	1 Aug 2023 12:13	4 Sep 2023 10:10
0061	pH		8.13	7.67	7.99	8.07	7.93	7.88	8.18	7.87	8.06	7.87
0076	Temperature of Water	°C	13.1	7.6	5.4	9.2	4.7	6.3	13.3	16.1	16.6	16.1
0077	Conductivity at 25 C	μs/cm	885	781	384	873	728	798	857	825	820	852
0085	BOD : 5 Day ATU	mg/l									1.5	< 1
0111	Ammoniacal Nitrogen as N	mg/l	0.034	0.231	0.095	0.049	0.4	0.33	0.039	< 0.03	< 0.03	0.034
0116	Nitrogen, Total Oxidised as N	mg/l	7.7	7.16	7.8	8.2	6.5	7.1	9	7.1	7.4	9.5
0117	Nitrate as N	mg/l	7.66	7.09	7.71	8.13	6.43	6.99	8.97	7.03	7.36	9.45
0118	Nitrite as N	mg/l	0.044	0.072	0.088	0.066	0.071	0.11	0.033	0.066	0.04	0.047
0119	Ammonia un-ionised as N	mg/l	0.00078	0.00167	0.00121	0.00084	0.00421	0.00349	0.00091	< 0.00064	< 0.00089	0.00072
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	240	239	270	270	230	260	250	240	240	230
0180	Orthophosphate, reactive as P	mg/l	0.81	0.225	0.29	0.25	0.21	0.23	0.41	0.78	0.71	0.86
9901	Oxygen, Dissolved, % Saturation	%	86.3	72.9	84.5	78.3	79.5	89.8	100.6	68.5	100.2	74.1
9924	Oxygen, Dissolved as O2	mg/l	9.05	8.71	10.7	8.99	10.2	11.1	10.5	6.73	9.74	7.28

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sampling point Marcham Brook At Mill Road, Marcham

Determinands

Sampling results

Samples from 18 Sep 2023 to 8 Jul 2024

Samples from 8 Oct 2019 to 4 Sep 2023

sampling point
Marcham Brook At Mill Road, Marcham