sampling point
Witton Castle Lakes At Overflow

Description	WITTON CASTLE LAKES AT OVERFLOW
Sampling point ID	NE-44100254
Type	Freshwater – Lakes/Ponds/Reservoirs
Status	open
Location	easting northing: 415685 531040 lat lon: 54.67417, -1.758286
Area	Northumberland Durham And Tees
Sub-Area	Wear & Tees
Summary	38 samples taken between 2020 and 2007

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.

21 determinands have been measured at this site

Alky pH 4.5
Ammonia(N)
CHLOROPHYLL
Colour Filt
Cond @ 20C
Cond @ 25C
N Oxid Filt
N Oxidised
NH3 un-ion
Nitrate-N
Nitrite-N
Nitrogen - N
O Diss %sat
Oil & Grs Vs
Orthophospht
OrthophsFilt
Oxygen Diss
Phenol Odour
Phosphorus-P
Temp Water
pH

Displaying the twenty most recent samples. You can see all 38 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 19 Apr 2017 to 16 Mar 2020

Notation	Determinand	Units	19 Apr 2017 10:53	18 Jul 2017 11:22	27 Oct 2017 12:13	17 Jan 2018 11:07	18 Apr 2018 10:42	23 Jul 2018 10:31	28 Jan 2019 11:02	17 Jul 2019 10:53	19 Nov 2019 12:41	16 Mar 2020 10:40
0061	pH									9.94	7.47	8.39
0072	Colour, Filtered	hazen	9.2	20	14	12	9.4	24	10	18
0076	Temperature of Water	°C								21.3	3.3	7.5
0077	Conductivity at 25 C	μs/cm	281	227	216	286	254	101	308	202	219	249
0111	Ammoniacal Nitrogen as N	mg/l								< 0.03	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l								< 0.2	< 0.2	< 0.2
0117	Nitrate as N	mg/l								< 0.196	< 0.196	< 0.196
0118	Nitrite as N	mg/l								< 0.004	< 0.004	< 0.004
0119	Ammonia un-ionised as N	mg/l								< 0.00124	< 0.0001	< 0.00046
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	116	58	81	98	98	62	113	60	72	99
0180	Orthophosphate, reactive as P	mg/l								< 0.01	0.011	0.027
0348	Phosphorus, Total as P	mg/l	0.0414	0.0294	0.0222	0.0397	0.0254	0.0366	0.0328	0.044
7887	Chlorophyll : Acetone Extract	μg/l	23.3	9.3	2.2	14.8	5.2	15.3	13.4	6.6
9686	Nitrogen, Total as N	mg/l	0.83	1.01	0.81	1.34	0.93	0.83	2.11	0.65
9856	Orthophosphate, Filtered as P	mg/l	0.0039	0.0064	0.0071	0.0089	0.0047	0.0061	0.0069	0.0071
9901	Oxygen, Dissolved, % Saturation	%								141.2	80.8	104.1
9924	Oxygen, Dissolved as O2	mg/l								12.5	10.8	12.5
9943	Nitrogen, Total Oxidised, Filtered as N	mg/l	< 0.005	< 0.005	0.0925	0.189	0.0763	< 0.005	0.264	0.0099

Samples from 24 Oct 2014 to 17 Jan 2017

Notation	Determinand	Units	24 Oct 2014 12:30	30 Jan 2015 09:58	20 Apr 2015 10:16	28 Jul 2015 13:16	9 Oct 2015 09:03	27 Jan 2016 13:05	18 Apr 2016 11:28	29 Jul 2016 13:29	24 Oct 2016 13:28	17 Jan 2017 14:34
0072	Colour, Filtered	hazen	6.5	< 5	8	15	7.2	10	6.6	18	9	5
0077	Conductivity at 25 C	μs/cm	181	263	288	203	195	234	294	219	167	246
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	61	98	98	69	69	86	98	49	64	91
0348	Phosphorus, Total as P	mg/l	0.0261	0.0353	0.0474	0.0519	0.0455	0.0295	0.0358	0.101	0.0312	0.0163
7887	Chlorophyll : Acetone Extract	μg/l	12.5	29.5	15	47.6	16.7	25.7	30.6	67.4	13.2	10.4
9686	Nitrogen, Total as N	mg/l	0.55	0.6	0.75	0.93	0.82	0.83	0.59	1.83	0.78	0.66
9856	Orthophosphate, Filtered as P	mg/l	0.0034	0.0017	0.0031	0.0024	0.0043	0.0029	0.0035	0.0072	0.0038	0.0022
9943	Nitrogen, Total Oxidised, Filtered as N	mg/l	< 0.005	0.0073	< 0.005	0.0072	0.0098	0.355	< 0.005	0.005	0.0081	0.108

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sampling point Witton Castle Lakes At Overflow

Determinands

Sampling results

Samples from 19 Apr 2017 to 16 Mar 2020

Samples from 24 Oct 2014 to 17 Jan 2017

sampling point
Witton Castle Lakes At Overflow