sampling point
Pymmes Brook L.H. Channel At Ferry Lane

Description	PYMMES BROOK L.H. CHANNEL AT FERRY LANE
Sampling point ID	TH-PLER0116
Type	Freshwater – Rivers
Status	open
Location	easting northing: 534713 189463 lat lon: 51.587919, -0.056864
Area	Hertfordshire And North London
Sub-Area	L&W Herts & North London
Summary	219 samples taken between 2017 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.

21 determinands have been measured at this site

Action taken
Alky pH 4.5
Ammonia(N)
AmoniaTotYSI
BOD ATU
Chloride Ion
Cond @ 20C
Cond @ 25C
N Oxidised
NH3 un-ion
Nitrate-N
Nitrite-N
O Diss %sat
Orthophospht
Oxygen Diss
SI-GQA
Sld Sus@105C
Temp Water
Type of Flow
pH
pH in-situ

Displaying the twenty most recent samples. You can see all 219 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 6 Apr 2016 to 26 Apr 2017

Notation	Determinand	Units	6 Apr 2016 14:21	19 May 2016 10:25	11 Jul 2016 11:06	11 Aug 2016 10:21	14 Sep 2016 11:45	15 Nov 2016 11:37	15 Dec 2016 10:01	24 Feb 2017 12:08	13 Mar 2017 11:32	26 Apr 2017 14:14
0061	pH		7.4	7.58	7.82	7.72	7.65	7.45	7.4	7.28	7.43	7.63
0076	Temperature of Water	°C	15.1	17	19.9	19.7	22.6	16.8	14.7	13.5	15.6	16.6
0077	Conductivity at 25 C	μs/cm	1086	964	1062	1099	1095	1048	1123	1115	1110	1127
0111	Ammoniacal Nitrogen as N	mg/l	0.081	0.122	< 0.03	0.035	0.045	0.065	0.132	0.186	0.056	0.048
0116	Nitrogen, Total Oxidised as N	mg/l	21.4	19	19.1	23.1	22.7	19.3	25.1	27.5	26.7	32.1
0117	Nitrate as N	mg/l	21.3	18.9	19	23.1	22.7	19.3	25.1	27.3	26.7	32.1
0118	Nitrite as N	mg/l	0.12	0.139	0.0538	0.0373	0.0365	0.0469	0.0475	0.189	0.0271	0.0205
0119	Ammonia un-ionised as N	mg/l	0.00055	0.00144	< 0.00075	0.00069	0.00094	0.00056	0.00087	0.00085	0.00042	0.00061
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	158	142	167	149	158	172	151	133	140	128
0180	Orthophosphate, reactive as P	mg/l	0.28	0.608	0.672	0.635	0.891	0.59	0.815	0.715	0.67	0.638
9901	Oxygen, Dissolved, % Saturation	%	97.5	101.3	103	100.1	101.2	95.1	80.1	91	88.2	118.7
9924	Oxygen, Dissolved as O2	mg/l	9.79	9.76	9.36	9.13	8.73	9.21	8.11	9.46	8.76	11.5

Samples from 26 May 2015 to 26 Feb 2016

Notation	Determinand	Units	26 May 2015 11:51	29 Jun 2015 12:17	13 Jul 2015 11:50	12 Aug 2015 12:22	15 Sep 2015 10:24	19 Oct 2015 13:43	20 Nov 2015 12:29	16 Dec 2015 10:37	27 Jan 2016 12:43	26 Feb 2016 14:16
0061	pH		7.37	7.44	7.52	7.92	7.53	7.63	7.6	7.8	7.76	7.51
0076	Temperature of Water	°C	18.4	21.1	21	20.9	18.4	18.6	15.9	14.7	14.1	13.3
0077	Conductivity at 25 C	μs/cm	1096	1132	1075	1134	953	1124	972	801	1010	1079
0111	Ammoniacal Nitrogen as N	mg/l	0.075	0.069	0.075	< 0.03	0.076	0.064	0.052	0.06	0.083	0.103
0116	Nitrogen, Total Oxidised as N	mg/l	19.5	18.5	20.7	25.6	20.9	22.2	18.7	13.5	19.4	22.5
0117	Nitrate as N	mg/l	19.5	18.5	20.6	25.6	20.9	22.2	18.7	13.4	19.3	22.4
0118	Nitrite as N	mg/l	0.0376	0.0447	0.0535	0.0301	0.0206	0.0166	0.0156	0.0676	0.0708	0.0544
0119	Ammonia un-ionised as N	mg/l	0.00061	0.0008	0.00103	< 0.00101	0.00088	0.00095	0.00059	0.00098	0.00119	0.00079
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	158	155	146	139	132	157	144	137	153	152
0180	Orthophosphate, reactive as P	mg/l	0.281	0.352	0.451	0.43	0.229	0.198	0.186	0.273	0.339	0.288
9901	Oxygen, Dissolved, % Saturation	%	108	106	109.4	107	92	92.8	88	86	80.7	89.8
9924	Oxygen, Dissolved as O2	mg/l	10.1	9.41	9.73	9.54	8.62	8.66	8.68	8.71	8.28	9.38

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sampling point Pymmes Brook L.H. Channel At Ferry Lane

Determinands

Sampling results

Samples from 6 Apr 2016 to 26 Apr 2017

Samples from 26 May 2015 to 26 Feb 2016

sampling point
Pymmes Brook L.H. Channel At Ferry Lane