sampling point
D/S Of Tetford Stw

Description	D/S OF TETFORD STW
Sampling point ID	AN-DSTETFRD
Type	Freshwater – Rivers
Status	open
Location	easting northing: 533905 372734 lat lon: 53.234752, 0.004799
Area	Lincolnshire And Northamptonshire
Sub-Area	North & South Team Sub Area
Summary	34 samples taken between 2023 and 2020

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

Displaying the twenty most recent samples. You can see all 34 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 21 Jun 2022 to 13 Mar 2023

Notation	Determinand	Units	21 Jun 2022 10:36	12 Jul 2022 11:51	8 Aug 2022 12:15	1 Sep 2022 10:22	17 Oct 2022 10:48	10 Nov 2022 11:40	9 Dec 2022 11:28	18 Jan 2023 12:06	8 Feb 2023 11:59	13 Mar 2023 11:10
0061	pH		7.79	7.91	8.11	7.99	7.51	7.68	7.94	8.04	7.96	7.86
0076	Temperature of Water	°C	12.6	15.9	15.1	14.6	12	10.8	3.4	3.3	4.1	9.1
0077	Conductivity at 25 C	μs/cm	562	562	592	553	580	604	568	611	590	614
0085	BOD : 5 Day ATU	mg/l	< 1	< 1	< 3	< 1	1.2	< 1	1.9	1.1	1.3	1.2
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	< 0.03	< 0.03	< 0.03	0.18	< 0.03	< 0.03	0.073	0.042	0.05
0116	Nitrogen, Total Oxidised as N	mg/l	3.9	3.6	3.6		4.1	3.9	5.6	6.5	4.9	5.8
0117	Nitrate as N	mg/l	3.88	3.58	3.59		4	3.87	5.58	6.47	4.87	5.77
0118	Nitrite as N	mg/l	0.022	0.021	0.0085	0.0065	0.098	0.034	0.019	0.03	0.03	0.029
0119	Ammonia un-ionised as N	mg/l	< 0.00041	< 0.00069	< 0.00079	< 0.00075	0.00125	< 0.00028	< 0.00029	0.00081	0.00045	0.00062
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	140	130	140	140	140	150	140	180	160	190
0180	Orthophosphate, reactive as P	mg/l	0.1	0.14	0.14	0.12	0.14	0.071	0.046	0.046	0.049	0.052
9901	Oxygen, Dissolved, % Saturation	%	104.5	87.2	91.2	91.6	74.3	76.7	95.9	94.3	95.7	93.4
9924	Oxygen, Dissolved as O2	mg/l	11.1	8.6	9.15	9.29	7.99	8.48	12.8	12.6	12.5	10.8

Samples from 4 Aug 2021 to 13 May 2022

Notation	Determinand	Units	4 Aug 2021 08:12	7 Sep 2021 10:30	21 Oct 2021 12:49	8 Nov 2021 11:34	9 Dec 2021 11:28	11 Jan 2022 10:49	9 Feb 2022 08:57	9 Mar 2022 11:18	13 Apr 2022 11:39	13 May 2022 11:59
0061	pH		8.03	7.91	7.84	7.95	7.89	7.84	8.02	7.93	8.03	7.89
0076	Temperature of Water	°C	12.8	13.8	10.1	7.6	6.1	7.4	7.8	6.6	11.7	11.9
0077	Conductivity at 25 C	μs/cm	573	558	575	612	610	613	582	605	570	554
0085	BOD : 5 Day ATU	mg/l	1.2								1.4	1
0111	Ammoniacal Nitrogen as N	mg/l	0.047	< 0.03	< 0.03	0.036	0.063	0.067	0.041	0.082	< 0.03	0.031
0116	Nitrogen, Total Oxidised as N	mg/l	4.2	3.9	4.6	5.1	6.6	6	5.2	6.1	4.9	3.9
0117	Nitrate as N	mg/l	4.15	3.89	4.57	5.07	6.58	5.96	5.17	6.06	4.87	3.87
0118	Nitrite as N	mg/l	0.048	0.0066	0.03	0.032	0.022	0.036	0.03	0.042	0.028	0.034
0119	Ammonia un-ionised as N	mg/l	0.00105	< 0.00059	< 0.00038	0.00049	0.00067	0.0007	0.00064	0.00099	< 0.00062	0.00051
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	150	140	160	190	180	190	160	190	150	150
0180	Orthophosphate, reactive as P	mg/l	0.15	0.12	0.1	0.065	0.052	0.05	0.055	0.054	0.063	0.077
9901	Oxygen, Dissolved, % Saturation	%	92	89.7	86.4	86.6	91.3	90.9	100.5	94.5	100.3	93.3
9924	Oxygen, Dissolved as O2	mg/l	9.71	9.26	9.71	10.3	11.3	10.9	11.9	11.6	10.9	10.1

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sampling point D/S Of Tetford Stw

Determinands

Sampling results

Samples from 21 Jun 2022 to 13 Mar 2023

Samples from 4 Aug 2021 to 13 May 2022

sampling point
D/S Of Tetford Stw