sampling point
Worminghall Brook At B4011 Roadbridge

Description	WORMINGHALL BROOK AT B4011 ROADBRIDGE
Sampling point ID	TH-PTAR0039
Type	Freshwater – Rivers
Status	open
Location	easting northing: 465700 211800 lat lon: 51.800988, -1.048612
Area	West Thames
Sub-Area	L&W North Wt
Summary	184 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.

18 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
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 184 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 7 Aug 2023 to 17 Jul 2024

Notation	Determinand	Units	7 Aug 2023 13:04	1 Sep 2023 11:19	16 Oct 2023 12:26	20 Nov 2023 12:29	4 Dec 2023 09:25	16 Jan 2024 11:27	23 Feb 2024 13:23	16 Apr 2024 10:39	24 May 2024 13:37	17 Jul 2024 14:07
0061	pH		8.19	8.19	8.08	7.98	7.72	8.33	8.2	8.27	8.18	8.25
0076	Temperature of Water	°C	14.9	15.2	9	10.6	7.7	4.9	8.7	10.3	12.7	16.1
0077	Conductivity at 25 C	μs/cm	797	800	922	865	697	910	815	885	882	827
0085	BOD : 5 Day ATU	mg/l	3.8	< 4	11	< 3	3	1.3	< 1	1.1	< 1	2.1
0111	Ammoniacal Nitrogen as N	mg/l	0.06	< 0.03	0.043	< 0.03	0.066	0.032	0.048	< 0.03	0.043	0.042
0116	Nitrogen, Total Oxidised as N	mg/l	15	13	12	7.6	4.8	16	9.5	15	11	14
0117	Nitrate as N	mg/l	15	13	12	7.59	4.79	16	9.49	15	11	14
0118	Nitrite as N	mg/l	0.0083	0.012	0.006	0.0076	0.0066	0.014	0.0091	0.01	0.028	0.034
0119	Ammonia un-ionised as N	mg/l	0.00156	< 0.0008	0.00073	< 0.00055	0.00054	0.0004	0.0008	< 0.00056	0.00096	0.00119
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	240	240	290	330	260	350	320	320	310	250
0180	Orthophosphate, reactive as P	mg/l	0.056	0.067	0.061	0.061	0.17	0.096	0.15	0.052	0.11	0.1
9901	Oxygen, Dissolved, % Saturation	%	93.1	95.1	91.4	91.6	93.4	96.6	98.6	98	94.2	95.5
9924	Oxygen, Dissolved as O2	mg/l	9.38	9.52	10.5	10.2	11.1	12.4	11.5	11	9.97	9.38

Samples from 28 Oct 2015 to 18 Jul 2023

Notation	Determinand	Units	28 Oct 2015 10:45	8 Feb 2016 15:29	12 May 2016 11:49	2 Aug 2016 13:01	4 Nov 2016 12:16	20 Mar 2017 14:28	16 May 2023 11:39	16 Jun 2023 13:43	30 Jun 2023 12:23	18 Jul 2023 11:29
0061	pH		8.11	7.84	8.09	8.17	8.17	8.11	8.06	8.15	8.17	8.18
0076	Temperature of Water	°C	11.6	7.5	14.6	17	8.6	10.4	11.9	17.9	14.5	15
0077	Conductivity at 25 C	μs/cm	955	669	973	901	944	486	859	801	794	791
0085	BOD : 5 Day ATU	mg/l								< 1
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	0.037	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	14.6	6.27	16.3	17.5	15.9	11.8	13	17	17	16
0117	Nitrate as N	mg/l	14.6	6.26	16.3	17.5	15.9	11.8	13	17	17	16
0118	Nitrite as N	mg/l	0.0045	0.009	0.0174	0.0136	0.0112	0.0206	0.0076	0.016	0.014	0.013
0119	Ammonia un-ionised as N	mg/l	< 0.00062	0.00039	< 0.00077	< 0.00091	< 0.00049	< 0.00056	< 0.00063	< 0.00097	< 0.00076	< 0.00079
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	261	229	298	253	244	274	300	230	240	240
0180	Orthophosphate, reactive as P	mg/l	0.058	0.116	0.049	0.064	0.095	0.028	0.023	0.04	0.038	0.043
9901	Oxygen, Dissolved, % Saturation	%	88.4	89.6	102.6	85.6	89.5	88.2	96.5	90.3	93.1	91.2
9924	Oxygen, Dissolved as O2	mg/l	9.59	10.7	10.4	8.25	10.4	9.84	10.4	8.54	9.47	9.17

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sampling point Worminghall Brook At B4011 Roadbridge

Determinands

Sampling results

Samples from 7 Aug 2023 to 17 Jul 2024

Samples from 28 Oct 2015 to 18 Jul 2023

sampling point
Worminghall Brook At B4011 Roadbridge