sampling point
R.Alde Langham Bridge

Description	R.ALDE LANGHAM BRIDGE
Sampling point ID	AN-ALD030
Type	Freshwater – Rivers
Status	open
Location	easting northing: 637500 258150 lat lon: 52.170457, 1.471769
Area	Essex Norfolk And Suffolk
Sub-Area	Norfolk & Suffolk Team Sub Area
Summary	235 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.

23 determinands have been measured at this site

Alky pH 4.5
Ammonia(N)
BOD ATU
CHLOROPHYLL
COD as O2
Chloride Ion
Cond @ 20C
Cond @ 25C
N Inorganic
N Oxidised
NH3 un-ion
Nitrate-N
Nitrite-N
O Diss %sat
Orthophospht
Oxygen Diss
SiO2 Rv
Sld Sus@105C
Temp Water
Turbidity
TurbidityNTU
pH
pH Inst unit

Displaying the twenty most recent samples. You can see all 235 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 9 Nov 2023 to 7 Aug 2024

Notation	Determinand	Units	9 Nov 2023 13:06	28 Dec 2023 08:50	25 Jan 2024 08:56	14 Feb 2024 12:15	13 Mar 2024 12:49	3 Apr 2024 12:54	1 May 2024 13:05	5 Jun 2024 12:14	2 Jul 2024 13:45	7 Aug 2024 10:49
0061	pH		7.74	8.09	7.94	7.86	8.04			7.84	7.79	7.86
0076	Temperature of Water	°C	9.3	8.6	6.1	9	10.2	11.6	14.4	14.1	14.7	16.1
0077	Conductivity at 25 C	μs/cm	923	971	851	788	807	993	929	969	1042	1041
0085	BOD : 5 Day ATU	mg/l						1.2	2.1	< 1	< 1	< 1
0092	Chemical Oxygen Demand :- {COD}	mg/l						17	18	18	12	12
0111	Ammoniacal Nitrogen as N	mg/l	0.068	0.056	0.072	0.051	0.051	< 0.03	< 0.03	0.032	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	7	5.9	7.8	6	5.6	6.3	9.6	6.8	6.5	6.8
0117	Nitrate as N	mg/l	6.95	5.85	7.75	5.97	5.56	6.27	9.55	6.77	6.48	6.78
0118	Nitrite as N	mg/l	0.046	0.048	0.049	0.03	0.043	0.027	0.05	0.031	0.024	0.024
0119	Ammonia un-ionised as N	mg/l	0.00065	0.00092	0.00086	0.00063	0.00094			0.00055	< 0.00048	< 0.00062
0135	Solids, Suspended at 105 C	mg/l	5.2	24	22	18	29	7.5	4.5	3.7	4.5	12
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	310	290		300	320			310	310	310
0172	Chloride	mg/l						68	58	65	73	79
0180	Orthophosphate, reactive as P	mg/l	0.11	0.11		0.12	0.11	0.094	0.058	0.08	0.058	0.058
0182	Silica, reactive as SiO2	mg/l						8.3	5.1	10	11	14
6396	Turbidity	ntu	5.3	21	16	12	20			3.8	2.4	3.9
7887	Chlorophyll : Acetone Extract	μg/l	1.1	1.7	2.1	2.7	4.7	6.8	19	< 0.5	2.8	3.3
9901	Oxygen, Dissolved, % Saturation	%	79.8	85.5	93.6	86.6	90.7	94.5	123.6	84.4	80.7	76.6
9924	Oxygen, Dissolved as O2	mg/l	9.14	9.96	11.6	9.99	10.2	10.2	12.6	8.65	8.16	7.52

Samples from 26 Jan 2023 to 9 Oct 2023

Notation	Determinand	Units	26 Jan 2023 10:22	20 Feb 2023 09:48	15 Mar 2023 10:32	27 Apr 2023 13:13	17 May 2023 13:23	1 Jun 2023 10:17	5 Jul 2023 12:17	1 Aug 2023 10:38	6 Sep 2023 13:14	9 Oct 2023 12:09
0061	pH		7.81	7.99	7.98	8.11	8.16	7.78	7.64	7.65	7.62	7.75
0076	Temperature of Water	°C	5.4	8.5	6.5	11.4	13.8	12.3	14.6	15.5	16.2	15.2
0077	Conductivity at 25 C	μs/cm	1045	1070	886	961	999	1047	938	970	981	1048
0111	Ammoniacal Nitrogen as N	mg/l	0.034	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	0.04	< 0.03	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	9.2	7.9	11	7.1	6	6.1	4.9	4.9	6	6.6
0117	Nitrate as N	mg/l	9.15	7.88	11	7.08	5.98	6.08	4.87	4.88	5.98	6.59
0118	Nitrite as N	mg/l	0.051	0.021	0.03	0.016	0.018	0.021	0.034	0.024	0.017	0.014
0119	Ammonia un-ionised as N	mg/l	0.00029	< 0.00048	< 0.0004	< 0.00061	< 0.00072	< 0.00039	0.00045	< 0.00037	< 0.00036	< 0.00045
0135	Solids, Suspended at 105 C	mg/l	7.7	6.1	7.5	4.1	3.9	< 3	6.9	< 3	8.5	3
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	280	300	270	290	330	310	270	310	300	310
0180	Orthophosphate, reactive as P	mg/l	0.13	0.17	0.11	0.068	0.12	0.1	0.28	0.17	0.13	0.093
6396	Turbidity	ntu			4.5	1.9	3.1	2.6	11	1.9	6.6	1.5
7887	Chlorophyll : Acetone Extract	μg/l	1.8	6.2	5.4	11	2.9	4.3		2.1	1.7	1.2
9901	Oxygen, Dissolved, % Saturation	%	81.2	87.8	90	115.9	100.4	77.4	62.8	64	65.6	76.2
9924	Oxygen, Dissolved as O2	mg/l	10.3	10.3	11	12.6	10.4	8.27	6.37	6.37	6.43	7.63

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sampling point R.Alde Langham Bridge

Determinands

Sampling results

Samples from 9 Nov 2023 to 7 Aug 2024

Samples from 26 Jan 2023 to 9 Oct 2023

sampling point
R.Alde Langham Bridge