sampling point
Rib At Wadesmill

Description	RIB AT WADESMILL
Sampling point ID	TH-PLER0228
Type	Freshwater – Unspecified
Status	open
Location	easting northing: 535900 217400 lat lon: 51.838671, -0.028855
Area	Hertfordshire And North London
Sub-Area	L&W Herts & North London
Summary	79 samples taken between 2024 and 2017

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.

16 determinands have been measured at this site

Alky pH 4.5
Ammonia(N)
BOD ATU
CHLOROPHYLL
Cond @ 25C
N Oxidised
NH3 un-ion
Nitrate-N
Nitrite-N
O Diss %sat
Orthophospht
Oxygen Diss
Sld Sus@105C
Temp Water
TurbidityNTU
pH

Displaying the twenty most recent samples. You can see all 79 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 1 Aug 2023 to 17 Jun 2024

Notation	Determinand	Units	1 Aug 2023 13:28	1 Sep 2023 11:07	4 Oct 2023 11:10	3 Nov 2023 11:29	5 Dec 2023 10:17	3 Jan 2024 08:47	6 Feb 2024 08:24	1 Mar 2024 08:28	1 May 2024 09:12	17 Jun 2024 08:20
0061	pH		8.17	8.09	8.12	8.03	8.1	8.09	8.19	8.09		8.19
0076	Temperature of Water	°C	15.5	14	13.3	10.1	6.6	8	9.4	7.8		12.9
0077	Conductivity at 25 C	μs/cm	707	727	700	587	686	534	750	733		723
0085	BOD : 5 Day ATU	mg/l										1
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	< 0.03	< 0.03	0.038	< 0.03	0.035	< 0.03	0.04		< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	7	7.9	7.6	15	15	8.9	9.3	8.6		8.2
0117	Nitrate as N	mg/l	6.99	7.89	7.59	15	15	8.88	9.29	8.58		8.19
0118	Nitrite as N	mg/l	0.011	0.007	0.013	0.025	0.014	0.017	0.0076	0.024		0.012
0119	Ammonia un-ionised as N	mg/l	< 0.00082	< 0.00073	< 0.0007	0.0007	< 0.00043	0.00055	< 0.00052	0.00062		< 0.00068
0135	Solids, Suspended at 105 C	mg/l	6.9	12	15	110	27	89	10	34	9.6	9.5
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	280	270	260	200	240	210	290	250		270
0180	Orthophosphate, reactive as P	mg/l	0.37	0.42	0.51	0.15	0.16	0.14	0.25	0.18		0.27
7887	Chlorophyll : Acetone Extract	μg/l	3.2	3.3	0.66	4	2.1	3.2	1.5	2.9	5.5	3.1
9901	Oxygen, Dissolved, % Saturation	%	94.8	92	89.8	89.1	94.5	90.1	95.3	96.3		92.4
9924	Oxygen, Dissolved as O2	mg/l	9.43	9.46	9.38	10	11.6	10.7	10.9	11.4		9.73

Samples from 6 Oct 2022 to 3 Jul 2023

Notation	Determinand	Units	6 Oct 2022 13:23	1 Nov 2022 12:05	1 Dec 2022 12:45	19 Jan 2023 11:44	3 Feb 2023 12:45	2 Mar 2023 10:10	5 Apr 2023 10:18	2 May 2023 12:10	1 Jun 2023 15:40	3 Jul 2023 11:22
0061	pH		8.22	8.24	8.28	8.11	8.27	8.37	8.11	8.26	8.3	8.14
0076	Temperature of Water	°C	12.2	12.3	8.4	4.8	9	6.4	8.4	12	13.8	14.2
0077	Conductivity at 25 C	μs/cm	688	714	727	755	735	736	743	734	735	713
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03		< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	6.9	6.2	9.3	9.5	8.8	8.7	8.9	8.3	8	7.5
0117	Nitrate as N	mg/l	6.89		9.29	9.48	8.79	8.69	8.89	8.28	7.98	7.48
0118	Nitrite as N	mg/l	0.0063		0.0091	0.017	0.0058	0.0072	0.012	0.016	0.016	0.016
0119	Ammonia un-ionised as N	mg/l	< 0.00064		< 0.00049	< 0.00037	< 0.00051	< 0.00042	< 0.00049	< 0.00063	< 0.00072	< 0.00074
0135	Solids, Suspended at 105 C	mg/l	19	10	6.1	9.7	4.3	19	8.9	18	4.1	10
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	270	270	270	280	280	280	280	280	290	280
0180	Orthophosphate, reactive as P	mg/l	0.51		0.29	0.23	0.26	0.3	0.19	0.21	0.26	0.37
7887	Chlorophyll : Acetone Extract	μg/l	4.5	3.7	0.79	0.74	1.3	4.1	1.7	8.2	2.4	2.3
9901	Oxygen, Dissolved, % Saturation	%	91.9	86.8	94.6	97	103.4	98.9	98.7	105.7	111.9	94.5
9924	Oxygen, Dissolved as O2	mg/l	9.84	9.27	11.1	12.4	11.9	12.2	11.6	11.4	11.6	9.67

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sampling point Rib At Wadesmill

Determinands

Sampling results

Samples from 1 Aug 2023 to 17 Jun 2024

Samples from 6 Oct 2022 to 3 Jul 2023

sampling point
Rib At Wadesmill