sampling point
R.Witham Barkston Bridge

Description	R.WITHAM BARKSTON BRIDGE
Sampling point ID	AN-WITH5
Type	Freshwater – Rivers
Status	open
Location	easting northing: 492840 341380 lat lon: 52.961751, -0.619273
Area	Lincolnshire And Northamptonshire
Sub-Area	North & South Team Sub Area
Summary	262 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.

30 determinands have been measured at this site

Alky pH 4.5
Ammonia(N)
BOD ATU
CHLOR A
CHLOROPHYLL
COD as O2
Chloride Ion
Cond @ 20C
Cond @ 25C
GCMS S-Vol
LCMS
MR Screen
N Inorganic
N Oxidised
NATGRIDREF
NH3 un-ion
Nitrate-N
Nitrite-N
O Diss %sat
O Diss% Satn
O Dissolved
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 262 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 11 Sep 2023 to 1 Aug 2024

Notation	Determinand	Units	11 Sep 2023 10:57	23 Oct 2023 12:00	7 Nov 2023 11:36	5 Dec 2023 12:03	8 Jan 2024 10:41	5 Feb 2024 11:10	5 Mar 2024 09:58	12 Jun 2024 10:16	2 Jul 2024 10:44	1 Aug 2024 10:20
0061	pH		7.97	7.88	8.14	8.12	8.3	8.23	8.22	8.28	8.18	8.06
0076	Temperature of Water	°C	18.2	10.5	9.5	6.2	6.3	9.3	8.1	12.6	14	17.9
0077	Conductivity at 25 C	μs/cm	894	699	746	502	764	812	774	847	858	862
0085	BOD : 5 Day ATU	mg/l	< 1	1.1	1.3	2.1	1	< 1	1.3
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	0.042	< 0.03	0.048	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	7	9.4	11	6.3	14	13	13	10	9.6	9.1
0117	Nitrate as N	mg/l	6.99	9.38	11	6.29	14	13	13	9.98	9.58	9.08
0118	Nitrite as N	mg/l	0.014	0.025	0.02	0.013	0.016	0.013	0.01	0.016	0.021	0.017
0119	Ammonia un-ionised as N	mg/l	< 0.00093	0.00061	< 0.00053	0.00066	< 0.00042	< 0.00052	< 0.00048	< 0.00066	< 0.00073	< 0.00097
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	240	180	210	140	210	240	220	240	230	240
0180	Orthophosphate, reactive as P	mg/l	0.068	0.082	0.051	0.09	0.035	0.046	0.032	0.027	0.028	0.032
9901	Oxygen, Dissolved, % Saturation	%	89.1	95.4	98.1	96.2	94.2	102.9	98.9	105.1	101.3	95.5
9924	Oxygen, Dissolved as O2	mg/l	8.38	10.6	11.2	11.9	11.6	11.8	11.7	11.1	10.4	9.04

Samples from 2 Nov 2022 to 10 Aug 2023

Notation	Determinand	Units	2 Nov 2022 11:11	1 Dec 2022 12:03	23 Jan 2023 10:26	8 Feb 2023 11:05	3 Mar 2023 12:22	19 Apr 2023 11:44	3 May 2023 10:09	5 Jun 2023 12:08	7 Jul 2023 10:15	10 Aug 2023 09:31
0061	pH		7.88	8.17	8.21	8.35	8.37	8.31	8.35	9.24	8.19	8
0076	Temperature of Water	°C	10.9	8.2	4.9	4.8	7.3	10.9	10.9	13.9	15.2	16.1
0077	Conductivity at 25 C	μs/cm	587	837	808	817	841	789	803	859	857	877
0085	BOD : 5 Day ATU	mg/l	1.7	1	< 1	< 1	1.7	1.3	1.6	1.2	< 1	< 1
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	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	3.4	12	14	13	12	11	11	12	9.2	7.8
0117	Nitrate as N	mg/l	3.38	12	14	13	12	11	11	12	9.18	7.78
0118	Nitrite as N	mg/l	0.016	0.015	0.01	0.011	0.012	0.013	0.02	0.031	0.023	0.019
0119	Ammonia un-ionised as N	mg/l	< 0.00045	< 0.00048	< 0.00038	< 0.00037	< 0.00045	< 0.00058	< 0.00058	< 0.00073	< 0.0008	< 0.00085
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	160	240	220	230	240	220	220	240	230	240
0180	Orthophosphate, reactive as P	mg/l	0.085	0.062	0.041	0.034	0.042	0.026	0.012	0.043	0.051	0.076
9901	Oxygen, Dissolved, % Saturation	%	82.5	92.3	92.2	105.7	112.2	109.3	114.5	105.7	98.2	89.9
9924	Oxygen, Dissolved as O2	mg/l	9.1	10.9	11.8	13.6	13.5	12.1	12.6	10.9	9.83	8.83

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sampling point R.Witham Barkston Bridge

Determinands

Sampling results

Samples from 11 Sep 2023 to 1 Aug 2024

Samples from 2 Nov 2022 to 10 Aug 2023

sampling point
R.Witham Barkston Bridge