sampling point
Colt Crag Reservoir At Overflow

Description	COLT CRAG RESERVOIR AT OVERFLOW
Sampling point ID	NE-43100237
Type	Freshwater – Lakes/Ponds/Reservoirs
Status	open
Location	easting northing: 394000 578150 lat lon: 55.097718, -2.095551
Area	Northumberland Durham And Tees
Sub-Area	Northumberland & Tyne
Summary	120 samples taken between 2020 and 2005

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.

23 determinands have been measured at this site

Alky pH 4.5
Ammonia(N)
C - Org Filt
CHLOROPHYLL
Colour Filt
Cond @ 20C
Cond @ 25C
MR Screen
N Oxid Filt
N Oxidised
NH3 un-ion
Nitrate-N
Nitrite-N
Nitrogen - N
O Diss %sat
Orthophospht
OrthophsFilt
Oxygen Diss
PhaeophytnAB
Phosphorus-P
Phytoplankto
Temp Water
pH

Displaying the twenty most recent samples. You can see all 120 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 28 Jun 2019 to 10 Mar 2020

Notation	Determinand	Units	28 Jun 2019 06:34	12 Jul 2019 12:01	8 Aug 2019 10:22	13 Sep 2019 12:55	25 Oct 2019 11:43	12 Nov 2019 11:38	2 Dec 2019 09:11	7 Jan 2020 11:16	7 Feb 2020 08:02	10 Mar 2020 09:50
0061	pH		8.26	8.69	8.27	8.3	8.04	7.66	7.76	7.82	8.09	7.69
0076	Temperature of Water	°C	16.3	18.6	18.5	14.2	8.8	5.8	3.7	4.6	2.3	4.9
0077	Conductivity at 25 C	μs/cm	228	224	230	195	129	183	167	185	187	185
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	< 0.03	< 0.03	< 0.03	0.045	0.042	0.076	0.083	0.052	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	0.21	< 0.2	< 0.2	< 0.2	< 0.2	< 0.2	0.2	0.32	0.37	0.45
0117	Nitrate as N	mg/l	0.206	< 0.196	< 0.196	< 0.196	< 0.196	< 0.196	0.196	0.316	0.366	0.446
0118	Nitrite as N	mg/l	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004	0.0044
0119	Ammonia un-ionised as N	mg/l	< 0.00087	< 0.00102	< 0.00102	< 0.00074	0.00075	0.00026	0.0005	0.00068	0.00054	< 0.00019
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	65	66	78	70	67	65	69	66	65	61
0180	Orthophosphate, reactive as P	mg/l	0.014	< 0.01	< 0.01	< 0.01	0.012	< 0.01	0.012	0.015	0.016	0.013
0348	Phosphorus, Total as P	mg/l	0.0246	0.05		0.043	0.049	0.0413	0.043	0.04	0.053	0.038
9901	Oxygen, Dissolved, % Saturation	%	98.3	109.7	98.9	103.3	83.5	98	76.5	93.3	86	97.3
9924	Oxygen, Dissolved as O2	mg/l	9.62	10.2	9.24	10.6	9.68	12.2	10.1	12	11.8	12.4

Samples from 3 Aug 2018 to 10 May 2019

Notation	Determinand	Units	3 Aug 2018 11:28	6 Sep 2018 10:54	25 Oct 2018 12:43	8 Nov 2018 09:53	3 Dec 2018 13:08	9 Jan 2019 11:08	12 Feb 2019 13:11	15 Mar 2019 11:35	9 Apr 2019 13:37	10 May 2019 07:47
0061	pH										8.07	8.03
0076	Temperature of Water	°C									7.7	8.9
0077	Conductivity at 25 C	μs/cm									227	235
0111	Ammoniacal Nitrogen as N	mg/l									< 0.03	0.071
0116	Nitrogen, Total Oxidised as N	mg/l									0.5	0.42
0117	Nitrate as N	mg/l									0.496	0.416
0118	Nitrite as N	mg/l									< 0.004	< 0.004
0119	Ammonia un-ionised as N	mg/l									< 0.00046	0.00119
0162	Alkalinity to pH 4.5 as CaCO3	mg/l									58	60
0180	Orthophosphate, reactive as P	mg/l									< 0.01	< 0.01
0348	Phosphorus, Total as P	mg/l	0.0363	0.0639	0.063	0.0443	0.0601	0.0402	0.0479	0.0587	0.0347	0.0225
9901	Oxygen, Dissolved, % Saturation	%									97.1	99
9924	Oxygen, Dissolved as O2	mg/l									11.6	11.5

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sampling point Colt Crag Reservoir At Overflow

Determinands

Sampling results

Samples from 28 Jun 2019 to 10 Mar 2020

Samples from 3 Aug 2018 to 10 May 2019

sampling point
Colt Crag Reservoir At Overflow