sampling point
R.Wensum County School Bridge

Description	R.WENSUM COUNTY SCHOOL BRIDGE
Sampling point ID	AN-WEN102
Type	Freshwater – Rivers
Status	open
Location	easting northing: 599230 322710 lat lon: 52.76522, 0.951529
Area	Essex Norfolk And Suffolk
Sub-Area	Norfolk & Suffolk Team Sub Area
Summary	19 samples taken between 2021 and 2019

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

Samples from 10 Feb 2020 to 2 Dec 2021

Notation	Determinand	Units	10 Feb 2020 10:17	11 Mar 2020 11:31	13 May 2021 11:54	1 Jun 2021 13:00	5 Jul 2021 13:29	5 Aug 2021 13:30	16 Sep 2021 11:16	21 Oct 2021 10:10	15 Nov 2021 12:38	2 Dec 2021 15:30
0061	pH		8.05	8.11	7.95	8.06	8.19	8.1	7.76	7.8	7.98	8.03
0076	Temperature of Water	°C	6.5	9.5	13.3	16.8	17.6	16.9	14.4	12.1	10.8	6.4
0077	Conductivity at 25 C	μs/cm	744	726	696	710	851	841	715	539	687	760
0085	BOD : 5 Day ATU	mg/l	1.4	1.3
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	0.038	0.043	0.036	< 0.03	< 0.03	< 0.03	0.041	0.038	0.072
0116	Nitrogen, Total Oxidised as N	mg/l	7.9	7.4	6.3	6.8	6.6	6.9	5.6	4.7	6.8	6.9
0117	Nitrate as N	mg/l	7.87	7.37	6.27	6.76	6.56	6.86	5.56	4.66	6.76	6.87
0118	Nitrite as N	mg/l	0.031	0.026	0.031	0.039	0.041	0.038	0.037	0.041	0.041	0.035
0119	Ammonia un-ionised as N	mg/l	< 0.00042	0.00067	0.00089	0.00108	< 0.00095	< 0.0009	< 0.00044	0.00055	0.0007	0.00101
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	260	260	230	250	250	250	250	190	270	260
0180	Orthophosphate, reactive as P	mg/l	0.064	0.05	0.038	0.054	0.083	0.057	0.1	0.14	0.071	0.069
9901	Oxygen, Dissolved, % Saturation	%	90.4	88.7	95.5	107.7	91.2	105.1	87.2	66.3	85.6	92.4
9924	Oxygen, Dissolved as O2	mg/l	11.1	10.1	9.97	10.4	8.68	10.2	8.89	7.11	9.46	11.4

Samples from 24 May 2019 to 10 Jan 2020

Notation	Determinand	Units	24 May 2019 11:23	20 Sep 2019 12:10	26 Sep 2019 10:42	7 Oct 2019 13:17	16 Oct 2019 14:37	8 Nov 2019 11:46	4 Dec 2019 12:20	11 Dec 2019 12:26	10 Jan 2020 10:36
0061	pH		8.06	8.05	7.81	7.52	7.85	7.95	8.05	8.04	7.84
0076	Temperature of Water	°C	15.7	12.3	15	11.6	12.2	8	4.8	6.2	7.3
0077	Conductivity at 25 C	μs/cm	784	701	783	536	722	755	723	754	645
0085	BOD : 5 Day ATU	mg/l	1.15	1	< 1	2.4	< 1	1.24	1.3	1.1	1.2
0111	Ammoniacal Nitrogen as N	mg/l	0.031	< 0.03	0.076	0.053	0.033	< 0.03	< 0.03	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	6.16	6.6	6.2	6.2	6.7	6.88	7.2	7.9	6.6
0117	Nitrate as N	mg/l	6.13	6.59	6.18	6.16	6.67	6.87	7.17	7.87	6.58
0118	Nitrite as N	mg/l	0.0277	0.012	0.022	0.037	0.034	0.0136	0.03	0.026	0.025
0119	Ammonia un-ionised as N	mg/l	0.00086	< 0.00065	0.0013	0.00036	0.0005	< 0.00042	< 0.00037	< 0.00041	< 0.00031
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	257	280	250	160	244	267	250	270	240
0180	Orthophosphate, reactive as P	mg/l	0.059	0.05	0.068	0.16	0.075	0.06	0.042	0.038	0.082
9901	Oxygen, Dissolved, % Saturation	%	91.9	122.5	79.3	68	83.4	88.8	87.2	89	83.9
9924	Oxygen, Dissolved as O2	mg/l	9.11	13.1	7.98	7.38	8.93	10.5	11.2	11	10.1