sampling point
Valley Brook At Dunkirk

Description	VALLEY BROOK AT DUNKIRK
Sampling point ID	NW-88000667
Type	Freshwater – Rivers
Status	open
Location	easting northing: 381101 352600 lat lon: 53.070287, -2.283505
Area	Greater Manchester Merseyside And Cheshire
Sub-Area	Cheshire
Summary	105 samples taken between 2019 and 2000

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.

29 determinands have been measured at this site

Alky pH 4.5
Ammonia(N)
BOD ATU
Calcium - Ca
Chloride Ion
Cond @ 20C
Cond @ 25C
Cu Filtered
Hardness
Magnesium-Mg
N Oxidised
NH3 un-ion
Nitrate-N
Nitrite-N
O Diss %sat
OMR Smpl Num
Orthophospht
Oxygen Diss
Sld NV@500C
Sld Sus@105C
Temp Water
Weth-Visibty
Weth7Dy-Prec
Weth7Dy-Temp
Weth7Dy-Vsy
WethPresPrec
WethPresTemp
Zinc - as Zn
pH

Displaying the twenty most recent samples. You can see all 105 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 30 Nov 2016 to 6 Feb 2019

Notation	Determinand	Units	30 Nov 2016 12:24	23 Mar 2017 11:17	9 Jun 2017 10:25	20 Sep 2017 14:04	11 Dec 2017 11:25	5 Jan 2018 12:20	6 Apr 2018 10:50	13 Jul 2018 11:37	5 Oct 2018 09:34	6 Feb 2019 11:57
0061	pH		7.55	7.74	7.53	7.71	7.55	7.71	7.62	7.68	7.5	7.62
0076	Temperature of Water	°C	3	7.4	12.1	12.4	2.9	5.2	6.2	14.7	11.9	5
0077	Conductivity at 25 C	μs/cm	1062	733	1239	964	2693	907	1003	1485	1431	1225
0111	Ammoniacal Nitrogen as N	mg/l	0.466	0.151	0.338	0.248	0.403	0.269	0.256	0.08	0.227	0.373
0116	Nitrogen, Total Oxidised as N	mg/l	1.02	1.74	0.967	1.23	1.24	0.975	1.44	0.981	1.05	1.94
0117	Nitrate as N	mg/l	1	1.72	0.934	1.2	1.22	0.955	1.42	0.953	0.99	1.93
0118	Nitrite as N	mg/l	0.0166	0.0154	0.0332	0.0279	0.017	0.02	0.0165	0.0276	0.0605	0.0072
0119	Ammonia un-ionised as N	mg/l	0.00182	0.00126	0.00247	0.00279	0.00156	0.00178	0.00148	0.001	0.00153	0.00198
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	117	96	84	111	114	58	99	84	94	81
0180	Orthophosphate, reactive as P	mg/l	0.0021	0.0019	0.0107	0.005	0.0146	0.0052	0.0012	0.0124	0.02	< 0.01
9901	Oxygen, Dissolved, % Saturation	%	83.5	110.2	87.3	95.4	99	101.3	93.9	87.1	71.2	97.7
9924	Oxygen, Dissolved as O2	mg/l	11.2	13.2	9.37	10.2	13.3	12.9	11.6	8.82	7.67	12.5

Samples from 17 Jun 2014 to 9 Aug 2016

Notation	Determinand	Units	17 Jun 2014 10:30	18 Sep 2014 11:22	1 Dec 2014 13:28	15 Jan 2015 09:25	14 Apr 2015 13:17	14 Jul 2015 11:22	27 Oct 2015 12:00	9 Feb 2016 10:09	23 May 2016 11:33	9 Aug 2016 15:08
0061	pH		7.4	7.4	7.7	7.4	7.7	7.54	7.51	7.83	7.29	7.47
0076	Temperature of Water	°C	12.4	14	8.8	5.1	10.8	13.9	10.2	5.1	10.7	12.7
0077	Conductivity at 25 C	μs/cm	1263	1425	967	1066	1176	1026	1310	717	1227	1329
0111	Ammoniacal Nitrogen as N	mg/l	0.641	0.161	0.423	0.299	0.428	0.195	0.306	0.189	0.449	0.34
0116	Nitrogen, Total Oxidised as N	mg/l	0.93	1.07	1.09	0.97	0.95	1.11	1.06	1.35	1.09	1.25
0117	Nitrate as N	mg/l	0.887	1.02	1.07	0.959	0.925	1.05	1.02	1.34	1.05	1.2
0118	Nitrite as N	mg/l	0.0429	0.0452	0.0217	0.0109	0.0254	0.0635	0.041	0.0138	0.0363	0.0539
0119	Ammonia un-ionised as N	mg/l	0.00356	0.00101	0.00357	0.00096	0.00419	0.00167	0.00186	0.00163	0.00171	0.00226
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	81	71	96	81	94	90	116	91	82	75
0180	Orthophosphate, reactive as P	mg/l	0.052	< 0.02	0.001	< 0.001	< 0.001	0.0521	0.0493	0.0019	< 0.001	0.0154
9901	Oxygen, Dissolved, % Saturation	%	85.2	82.4	93.7	98.2	97	81	85.3	93.2	88.5	80.4
9924	Oxygen, Dissolved as O2	mg/l	9.08	8.47	10.9	12.5	10.7	8.35	9.56	11.9	9.81	8.51

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sampling point Valley Brook At Dunkirk

Determinands

Sampling results

Samples from 30 Nov 2016 to 6 Feb 2019

Samples from 17 Jun 2014 to 9 Aug 2016

sampling point
Valley Brook At Dunkirk