sampling point
Enborne At Aldern Bridge

Description	ENBORNE AT ALDERN BRIDGE
Sampling point ID	TH-PKER0331
Type	Freshwater – Unspecified
Status	open
Location	easting northing: 449040 163749 lat lon: 51.370686, -1.29689
Area	West Thames
Sub-Area	L&W South Wt
Summary	62 samples taken between 2024 and 2013

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.

13 determinands have been measured at this site

Alky pH 4.5
Ammonia(N)
BOD ATU
Cond @ 25C
N Oxidised
NH3 un-ion
Nitrate-N
Nitrite-N
O Diss %sat
Orthophospht
Oxygen Diss
Temp Water
pH

Displaying the twenty most recent samples. You can see all 62 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 10 Jul 2019 to 27 Jun 2024

Notation	Determinand	Units	10 Jul 2019 10:01	16 Aug 2019 11:03	25 Sep 2019 14:31	10 Oct 2019 15:26	25 Nov 2019 11:56	11 Dec 2019 11:49	17 Jan 2020 11:11	5 Feb 2020 11:10	4 Mar 2020 14:23	27 Jun 2024 08:16
0061	pH		7.8	7.67	7.77	7.86	7.59	7.7	7.81	7.7	7.87	7.59
0076	Temperature of Water	°C	16.5	15.1	15.8	12.2	9.5	6.7	7.9	7.6	6.4	16.6
0077	Conductivity at 25 C	μs/cm	512	417	324	329	288	268	196	281	266	448
0085	BOD : 5 Day ATU	mg/l										< 3
0111	Ammoniacal Nitrogen as N	mg/l	0.035	0.032	0.036	< 0.03	0.054	< 0.03	0.089	< 0.03	< 0.03	0.031
0116	Nitrogen, Total Oxidised as N	mg/l	8.3	4.4	3.9	2.9	2.1	1.8	1.4	2	1.6	6.5
0117	Nitrate as N	mg/l	8.28	4.39	3.89	2.9	2.07	1.79	1.39	1.99	1.59	6.48
0118	Nitrite as N	mg/l	0.025	0.0074	0.01	< 0.004	0.027	0.0085	0.0071	0.011	0.0074	0.024
0119	Ammonia un-ionised as N	mg/l	0.00065	0.0004	0.0006	< 0.00047	0.00037	< 0.00022	0.0009	< 0.00023	< 0.00031	0.00036
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	99	91	58	78	80	74	59	76	74	96
0180	Orthophosphate, reactive as P	mg/l	0.84	0.7	0.17	0.21	0.12	0.077	0.08	0.12	0.085	0.56
9901	Oxygen, Dissolved, % Saturation	%	84	72.1	69.8	79.7	76	81.6	82.6	97.9	96.7	76.4
9924	Oxygen, Dissolved as O2	mg/l	8.18	7.24	6.9	8.53	8.67	9.97	9.79	11.7	11.9	7.43

Samples from 19 Aug 2016 to 18 Jun 2019

Notation	Determinand	Units	19 Aug 2016 10:54	15 Sep 2016 09:36	17 Nov 2016 08:30	7 Dec 2016 09:06	13 Feb 2017 11:51	1 Mar 2017 09:35	4 Apr 2017 11:04	4 Apr 2019 14:42	17 May 2019 11:58	18 Jun 2019 12:15
0061	pH		7.67	7.57	7.7	7.85	8.05	7.88	7.85	7.98	7.11	7.95
0076	Temperature of Water	°C	16.3	16.2	9	6.6	4.9	5.9	10.3	6.6	11.6	13.2
0077	Conductivity at 25 C	μs/cm	489	431	294	342	312	295	354	323	403	356
0111	Ammoniacal Nitrogen as N	mg/l	0.035	< 0.03	0.05	0.1	0.084	< 0.03	< 0.03	0.073	< 0.03	0.061
0116	Nitrogen, Total Oxidised as N	mg/l	7.77	5.44	1.66	3.04	2.89	2.44	4.12	2.06	4.57	3.81
0117	Nitrate as N	mg/l	7.75	5.43	1.64	3	2.87	2.43	4.08	2.04	4.55	3.77
0118	Nitrite as N	mg/l	0.0175	0.0056	0.0211	0.0427	0.0242	0.0131	0.0352	0.0167	0.0233	0.0366
0119	Ammonia un-ionised as N	mg/l	0.00048	< 0.00033	0.00043	0.00101	0.00105	< 0.00031	< 0.0004	0.00099	< 8.0e-05	0.00126
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	88	89	72	79	72	70	80	65	84	76
0180	Orthophosphate, reactive as P	mg/l	0.832	0.789	0.127	0.127	0.06	0.061	0.095	0.148	0.426	0.319
9901	Oxygen, Dissolved, % Saturation	%	71.2	75.9	82.1	85.8	97	89.2	83.1	98.8	85.3	87.5
9924	Oxygen, Dissolved as O2	mg/l	6.96	7.44	9.47	10.5	12.4	11.1	9.3	12.1	9.26	9.16

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sampling point Enborne At Aldern Bridge

Determinands

Sampling results

Samples from 10 Jul 2019 to 27 Jun 2024

Samples from 19 Aug 2016 to 18 Jun 2019

sampling point
Enborne At Aldern Bridge