sampling point
Little Silver Stream At Alswear

Description	LITTLE SILVER STREAM AT ALSWEAR
Sampling point ID	SW-73061202
Type	Freshwater – Rivers
Status	open
Location	easting northing: 272348 122104 lat lon: 50.984144, -3.819949
Area	Devon And Cornwall
Sub-Area	East Devon And Cornwall
Summary	190 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.

34 determinands have been measured at this site

Action taken
Alky pH 4.5
Ammonia(N)
BOD ATU
COD as O2
Calcium - Ca
Chloride Ion
Cond @ 20C
Cond @ 25C
Cu Filtered
Hardness
Hdnss Ca
Hdnss Mg
Magnesium-Mg
Mineral Oils
N Inorganic
N Oxidised
NH3 un-ion
Nitrate-N
Nitrite-N
O Diss %sat
Oil & Grs Vs
Orthophospht
Oxygen Diss
Phenol Odour
PhenolicOdor
Potassium- K
Sld Sus@105C
Temp Water
TurbidityNTU
Type of Flow
WethPresPrec
Zinc - as Zn
pH

Displaying the twenty most recent samples. You can see all 190 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 4 Sep 2017 to 21 Jun 2019

Notation	Determinand	Units	4 Sep 2017 11:57	17 Oct 2017 10:40	20 Nov 2017 13:21	12 Dec 2017 12:47	14 Feb 2018 11:06	14 May 2018 08:29	29 Aug 2018 11:59	14 Nov 2018 12:17	12 Mar 2019 11:06	21 Jun 2019 10:16
0061	pH		7.89	7.7	7.7	7.7	7.41	7.82	7.6	7.7	7.68	8.1
0076	Temperature of Water	°C	14.1	12.5	9.9	5.6	4.5	8.9	14.3	10.5	7.7	12.3
0077	Conductivity at 25 C	μs/cm	192	182	180	181	194	179	126	175	164	270
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	< 0.03	< 0.03	< 0.03	0.225	< 0.03	< 0.03	< 0.03	0.033	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	1.5	1.6	2.35	3.85	2.71	1.34	2.64	4.62	2.79	1.5
0117	Nitrate as N	mg/l	1.49	1.6	2.34	3.85	2.7	1.33	2.63	4.62	2.78	1.5
0118	Nitrite as N	mg/l	0.006	< 0.004	0.0061	0.0047	0.0146	0.0077	0.0054	0.0043	0.0061	0.0046
0119	Ammonia un-ionised as N	mg/l	< 0.00058	< 0.00033	< 0.00027	< 0.0002	0.00071	< 0.00034	< 0.0003	< 0.00029	0.00025	< 0.00065
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	46	48	41	27	30	44	37	22	25	43
0180	Orthophosphate, reactive as P	mg/l	0.061	0.021	0.021	0.014	0.029	0.028	0.042	0.014	0.029	0.037
9901	Oxygen, Dissolved, % Saturation	%	95.9	89	100	98	102.2	99.4	97	94	92.4	101
9924	Oxygen, Dissolved as O2	mg/l	9.84	9.46	11.3	12.3	13.2	11.5	9.91	10.5	11	10.8

Samples from 11 Feb 2015 to 19 Apr 2017

Notation	Determinand	Units	11 Feb 2015 08:14	7 May 2015 10:50	14 Aug 2015 13:29	9 Nov 2015 08:56	1 Mar 2016 13:53	21 Jun 2016 10:55	29 Sep 2016 10:52	7 Dec 2016 09:19	12 Jan 2017 10:28	19 Apr 2017 09:23
0061	pH		7.67	8.5	7.5	7.84	7.8	7.88	7.48	7.16	7.57	7.73
0076	Temperature of Water	°C	4.5	10.5	14.5	10.9	7.7	14.1	14.5	7.4	6.8	8.3
0077	Conductivity at 25 C	μs/cm	164	174	183	161	189	173	200	178	173	180
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	< 0.03	0.058	< 0.03	0.104	0.031	< 0.03	< 0.03	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	2.1	1.02	1.08	2.25	1.56	3.2	1.44	2.07	2.96	1.56
0117	Nitrate as N	mg/l	2.1	1.02	1.06	2.25	1.55	3.19	1.44	2.07	2.95	1.56
0118	Nitrite as N	mg/l	0.0049	< 0.004	0.0213	< 0.004	0.0139	0.0136	< 0.004	0.004	0.0063	< 0.004
0119	Ammonia un-ionised as N	mg/l	< 0.00017	< 0.00057	0.00047	< 0.00041	0.00102	0.00058	< 0.00023	< 7.0e-05	< 0.00016	< 0.00026
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	31	37	49	33	33	32	48	33	31	42
0180	Orthophosphate, reactive as P	mg/l	0.015	0.033	0.042	0.022	0.031	0.045	0.073	0.017	0.02	0.021
9901	Oxygen, Dissolved, % Saturation	%	96.5	98	93	95.8	99	97.3	91.8	91.6	99.9	96.1
9924	Oxygen, Dissolved as O2	mg/l	12.5	10.9	9.46	10.6	11.8	9.98	9.33	11	12.2	11.3

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sampling point Little Silver Stream At Alswear

Determinands

Sampling results

Samples from 4 Sep 2017 to 21 Jun 2019

Samples from 11 Feb 2015 to 19 Apr 2017

sampling point
Little Silver Stream At Alswear