sampling point
Grassholme Res - Outflow North (Wfd)

Description	GRASSHOLME RESERVOIR AT OUTFLOW NORTH SIDE (WATER FRAMEWORK DIRECTIVE)
Sampling point ID	NE-45100099
Type	Freshwater – Lakes/Ponds/Reservoirs
Status	open
Location	easting northing: 394595 522890 lat lon: 54.601139, -2.085172
Area	Northumberland Durham And Tees
Sub-Area	Wear & Tees
Summary	205 samples taken between 2020 and 2004

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.

39 determinands have been measured at this site

Alky pH 4.5
Ammonia(N)
BOD ATU
C - Org Filt
C - Organic
CHLOROPHYLL
Calcium - Ca
Chloride Ion
Colour Filt
Cond @ 20C
Cond @ 25C
Cu Filtered
MR Screen
Magnesium-Mg
N Oxid Filt
N Oxidised
N-Kjeldahl
NH3 filt N
NH3 un-ion
Nitrate-N
Nitrite-N
Nitrogen - N
O Diss %sat
Oil & Grs Vs
Orthophospht
OrthophsFilt
Oxygen Diss
Phenol Odour
Phosphorus-P
Phytoplankto
Potassium- K
SiO2 Rv
Sld Sus@105C
Sodium - Na
Sulphate SO4
Temp Water
TurbidityNTU
Zinc - as Zn
pH

Displaying the twenty most recent samples. You can see all 205 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 6 Aug 2019 to 19 Mar 2020

Notation	Determinand	Units	6 Aug 2019 11:19	10 Sep 2019 09:45	27 Sep 2019 10:47	25 Nov 2019 08:13	10 Dec 2019 10:13	13 Dec 2019 09:53	16 Jan 2020 10:27	26 Feb 2020 10:32	16 Mar 2020 12:33	19 Mar 2020 11:32
0061	pH		7.93	7.82	7.73	8.05	7.79	7.97	7.91	7.8	7.93	7.69
0072	Colour, Filtered	hazen	75	170	163	150	140	130	130	70	56	59
0076	Temperature of Water	°C	17.5	13.4	13.5	5.8	4.9	3.8	4.3	3.5	5.7	7.8
0077	Conductivity at 25 C	μs/cm	109	105	100	113	95	98	85	87	81	85
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	0.049	0.066	0.047	0.034	0.037	< 0.03	< 0.03	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	0.25	< 0.2	< 0.2	< 0.2	< 0.2	< 0.2	< 0.2	0.21	< 0.2	< 0.2
0117	Nitrate as N	mg/l	0.246	< 0.196	< 0.196	< 0.196	< 0.196	< 0.196	< 0.196	0.206	< 0.196	< 0.196
0118	Nitrite as N	mg/l	0.0045	< 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	< 0.00081	0.00076	0.00084	0.00063	0.00026	0.0004	< 0.00029	< 0.00021	< 0.00034	< 0.00023
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	40	44	46	47	44	42	39	31	27	27
0180	Orthophosphate, reactive as P	mg/l	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01
0348	Phosphorus, Total as P	mg/l	0.019	0.072	0.0196	0.02	0.02	0.022	0.018
7887	Chlorophyll : Acetone Extract	μg/l	4.3	1	1.1	1.1	< 0.5	< 0.5	< 0.5	1.7	2.1	< 0.5
9686	Nitrogen, Total as N	mg/l	0.74	0.82	0.88	0.83	0.82	0.84	0.61	0.58	0.43
9856	Orthophosphate, Filtered as P	mg/l	0.0046	0.0036	0.0066	0.0049	0.0057	0.0032	0.0041	0.0016	0.0013	0.0018
9901	Oxygen, Dissolved, % Saturation	%	94.1	96.7	96.3	94.8	99.8	103	99.9	99.4	101.3	107.7
9924	Oxygen, Dissolved as O2	mg/l	8.98	10.1	10	11.8	12.8	13.6	13	13.2	12.7	12.8
9943	Nitrogen, Total Oxidised, Filtered as N	mg/l	0.18	0.12	0.0638	0.17	0.14	0.09	0.1	0.22	0.15	0.14

Samples from 3 Jul 2018 to 17 Jul 2019

Notation	Determinand	Units	3 Jul 2018 11:09	7 Aug 2018 12:00	5 Sep 2018 10:13	31 Oct 2018 09:40	28 Nov 2018 13:32	13 Dec 2018 10:01	11 Jan 2019 11:09	20 Feb 2019 10:20	22 Mar 2019 11:20	17 Jul 2019 08:53
0061	pH											8.37
0072	Colour, Filtered	hazen	45	41	44	43	56	132	118	113	99	91
0076	Temperature of Water	°C										17.5
0077	Conductivity at 25 C	μs/cm	120	122	178	136	135	120	105	109	91	106
0111	Ammoniacal Nitrogen as N	mg/l										< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l										< 0.2
0117	Nitrate as N	mg/l										< 0.196
0118	Nitrite as N	mg/l										< 0.004
0119	Ammonia un-ionised as N	mg/l										< 0.00094
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	40	42	45	46	47	42	41	41	32	41
0180	Orthophosphate, reactive as P	mg/l										< 0.01
0348	Phosphorus, Total as P	mg/l	0.0124	0.0227	0.0234	0.0144	0.0218	0.0176	0.0154	0.0219	0.0275	0.016
4574	Phytoplankton		1	1	1
7887	Chlorophyll : Acetone Extract	μg/l	2.3	10.5	1.4	2.9	4.5	0.66	< 0.5	1.9	2.3	2.5
9686	Nitrogen, Total as N	mg/l	0.45	0.53	0.51	0.58	0.64	0.71	0.71	0.84	0.64	0.67
9856	Orthophosphate, Filtered as P	mg/l	< 0.001	0.0012	0.0011	0.0034	0.0034	0.0028	0.0034	0.0026	0.0014	0.0016
9901	Oxygen, Dissolved, % Saturation	%										106.7
9924	Oxygen, Dissolved as O2	mg/l										10.2
9943	Nitrogen, Total Oxidised, Filtered as N	mg/l	0.186	0.162	0.206	0.247	0.29	0.166	0.181	0.25	0.134	0.2

Tell us whether you accept cookies

sampling point Grassholme Res - Outflow North (Wfd)

Determinands

Sampling results

Samples from 6 Aug 2019 to 19 Mar 2020

Samples from 3 Jul 2018 to 17 Jul 2019

sampling point
Grassholme Res - Outflow North (Wfd)