sampling point
Selset Reservoir At Overflow

Description	SELSET RESERVOIR AT OVERFLOW
Sampling point ID	NE-45100102
Type	Freshwater – Lakes/Ponds/Reservoirs
Status	open
Location	easting northing: 391730 521550 lat lon: 54.589058, -2.129481
Area	Northumberland Durham And Tees
Sub-Area	Wear & Tees
Summary	143 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.

24 determinands have been measured at this site

Alk-Gran
Alky pH 4.5
Ammonia(N)
CHLOROPHYLL
Colour Filt
Cond @ 25C
MR Screen
N Oxid Filt
N Oxidised
NH3 un-ion
NO FLOW/SAMP
Nitrate-N
Nitrite-N
Nitrogen - N
O Diss %sat
Orthophospht
OrthophsFilt
Oxygen Diss
Phosphorus-P
Phytoplankto
Sld Sus@105C
Temp Water
Vol Filtered
pH

Displaying the twenty most recent samples. You can see all 143 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 22 Mar 2019 to 19 Mar 2020

Notation	Determinand	Units	22 Mar 2019 09:23	13 Aug 2019 13:15	27 Sep 2019 11:25	26 Nov 2019 09:35	13 Dec 2019 09:36	16 Jan 2020 10:15	5 Feb 2020 08:38	25 Feb 2020 12:27	16 Mar 2020 12:54	19 Mar 2020 09:21
0061	pH			7.62	7.78	7.61	8	8.02	8.05	7.55	8.29	7.55
0072	Colour, Filtered	hazen	97	190	190	160	140	120	110	67	58	58
0076	Temperature of Water	°C		16.1	13	5.5	4.1	4.3	3.3	4.1	5.7	5.1
0077	Conductivity at 25 C	μs/cm	87	90	92	82	84	76	96	79	77	81
0111	Ammoniacal Nitrogen as N	mg/l		< 0.03	0.035	0.039	0.033	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l		< 0.2	< 0.2	< 0.2	< 0.2	< 0.2	< 0.2	< 0.2	< 0.2	< 0.2
0117	Nitrate as N	mg/l		< 0.196	< 0.196	< 0.196	< 0.196	< 0.196	< 0.196	< 0.196	< 0.196	< 0.196
0118	Nitrite as N	mg/l		< 0.004	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004
0119	Ammonia un-ionised as N	mg/l		< 0.00036	0.00048	0.00021	0.00039	< 0.00036	< 0.00033	< 0.00013	< 0.0004	< 0.00014
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	30	42	44	38	35	34	33	27	25	25
0180	Orthophosphate, reactive as P	mg/l		< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	0.012	< 0.01
0348	Phosphorus, Total as P	mg/l	0.0165	0.025	0.014	0.018	0.017	0.015	0.014	0.014
7887	Chlorophyll : Acetone Extract	μg/l	0.9	0.68	< 0.5	< 0.5	< 0.5	< 0.5	< 0.5	1.5	1.4	< 0.5
9686	Nitrogen, Total as N	mg/l	0.49	0.89	0.76	0.67	0.58	0.54	0.55	0.51	0.37
9856	Orthophosphate, Filtered as P	mg/l	< 0.001	0.0026	0.0034	0.0026	0.0016	0.0024	0.0017	0.0013	< 0.001	< 0.001
9901	Oxygen, Dissolved, % Saturation	%		90.5	97.7	94.1	103	103.6	96.9	100.9	99.8	98.5
9924	Oxygen, Dissolved as O2	mg/l		8.89	10.3	11.8	13.4	13.5	12.9	13.2	12.5	12.5
9943	Nitrogen, Total Oxidised, Filtered as N	mg/l	0.0982	0.064	0.037	0.13	0.087	0.085	0.14	0.19	0.13	0.14

Samples from 13 Jun 2018 to 20 Feb 2019

Notation	Determinand	Units	13 Jun 2018 11:16	29 Jun 2018 10:55	3 Jul 2018 11:35	7 Aug 2018 12:28	5 Sep 2018 10:39	23 Oct 2018 12:36	20 Nov 2018 11:59	13 Dec 2018 09:29	17 Jan 2019 11:23	20 Feb 2019 10:57
0072	Colour, Filtered	hazen	53	55	53	44	93	145	150	147	136	122
0077	Conductivity at 25 C	μs/cm	121	117	131	148	129	370	118	106	111	96
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	45	45	50	52	49	42	44	39	39	36
0348	Phosphorus, Total as P	mg/l	0.019	0.0137	0.0183	0.0381	0.0119	0.0201	0.0221	0.0195	0.0116	0.0152
4574	Phytoplankton				1	1	1
7887	Chlorophyll : Acetone Extract	μg/l	3.2	6.2	4.2	3.3	0.71	0.85	< 0.5	0.69	< 0.5	0.66
9686	Nitrogen, Total as N	mg/l	0.54	0.52	0.55	0.58	0.69	0.69	0.65	0.65	0.64	0.61
9856	Orthophosphate, Filtered as P	mg/l	< 0.001	< 0.001	0.0011	0.0011	< 0.001	0.0015	0.0025	0.0014	< 0.001	0.001
9943	Nitrogen, Total Oxidised, Filtered as N	mg/l	0.174	0.163	0.168	0.206	0.169	0.105	0.125	0.133	0.122	0.174

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sampling point Selset Reservoir At Overflow

Determinands

Sampling results

Samples from 22 Mar 2019 to 19 Mar 2020

Samples from 13 Jun 2018 to 20 Feb 2019

sampling point
Selset Reservoir At Overflow