sampling point
River Hems At Littlehempston

Description	RIVER HEMS AT LITTLEHEMPSTON
Sampling point ID	SW-70721716
Type	Freshwater – Rivers
Status	open
Location	easting northing: 281257 62569 lat lon: 50.450907, -3.673909
Area	Devon And Cornwall
Sub-Area	Central Devon And Cornwall
Summary	137 samples taken between 2017 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.

31 determinands have been measured at this site

Action taken
Alky pH 4.5
Ammonia(N)
BOD ATU
Calcium - Ca
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
Type of Flow
WethPresPrec
Zinc - as Zn
pH

Displaying the twenty most recent samples. You can see all 137 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 16 Feb 2015 to 18 Apr 2017

Notation	Determinand	Units	16 Feb 2015 13:00	29 Jun 2015 13:04	24 Aug 2015 11:06	6 Nov 2015 09:51	9 Mar 2016 10:12	14 Jun 2016 11:57	12 Sep 2016 10:11	6 Dec 2016 11:17	18 Jan 2017 10:25	18 Apr 2017 13:15
0061	pH		7.9	8.1	7.9	7.87	7.59	8.2	8	8.07	7.84	8.2
0076	Temperature of Water	°C	8.2	15	13.5	13.2	7.9	14.7	15	9.9	7.6	10.8
0077	Conductivity at 25 C	μs/cm	486	535	393	411	354	525	531	482	496	511
0111	Ammoniacal Nitrogen as N	mg/l	0.045	< 0.03	0.138	< 0.03	0.122	< 0.03	0.041	0.033	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	4.66	4.7	3.41	4.12	3.1	4.44	4.62	4.74	4.52	4.49
0117	Nitrate as N	mg/l	4.64	4.69	3.39	4.11	3.08	4.43	4.6	4.73	4.51	4.48
0118	Nitrite as N	mg/l	0.0206	0.012	0.0226	0.0127	0.0214	0.0112	0.0167	0.0144	0.0084	0.0082
0119	Ammonia un-ionised as N	mg/l	0.00057	< 0.00079	0.00259	< 0.00052	0.00075	< 0.00077	0.00108	0.0006	< 0.00032	< 0.00058
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	197	214	151	154	138	207	216	185	186	212
0180	Orthophosphate, reactive as P	mg/l	0.069	0.194	0.165	0.073	0.089	0.144	0.24	0.074	0.057	0.067
9901	Oxygen, Dissolved, % Saturation	%	97	105	90	96.6	88.7	101	87	98.5	96.2	97
9924	Oxygen, Dissolved as O2	mg/l	11.4	10.6	9.36	10.1	10.5	10.2	8.75	11.1	11.5	10.7

Samples from 24 Feb 2010 to 17 Oct 2014

Notation	Determinand	Units	24 Feb 2010 12:50	7 Mar 2013 12:11	11 Jun 2013 13:37	11 Sep 2013 11:17	6 Dec 2013 10:22	7 Jan 2014 14:22	11 Apr 2014 13:14	27 May 2014 14:58	24 Jul 2014 12:50	17 Oct 2014 11:50
0061	pH		8.04	8	8.1	8.1	8.3	7.6	8	8.1	8.2	7.88
0076	Temperature of Water	°C	8.4	9.5	13	12.5	7.8	10	10.9	12.8	16.8	13.9
0077	Conductivity at 25 C	μs/cm	452	522	537	554	525	384	422		543	417
0085	BOD : 5 Day ATU	mg/l	< 1
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	0.058		0.05	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	4.98	5.11	5.03	5.54	5.53	4.35		4.14	5.13	4.74
0117	Nitrate as N	mg/l	4.97	5.09	5	5.53	5.51	4.34		4.12	5.11	4.72
0118	Nitrite as N	mg/l	0.0083	0.017	0.0276	0.011	0.0205	0.0082		0.0193	0.0165	0.0194
0119	Ammonia un-ionised as N	mg/l	< 0.00049	< 0.00053	< 0.00068	< 0.00066	< 0.00047	0.00043		0.00112	< 0.0009	< 0.00056
0135	Solids, Suspended at 105 C	mg/l	9.1
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	186	216	237	241	214	139		202	225	146
0180	Orthophosphate, reactive as P	mg/l	0.04	0.062	0.139	0.259	0.112	0.051		0.076	0.166	0.088
0664	Visible oil or grease, significant trace: Present/Not found (1/0)	pres/nf	0
6450	Copper, Dissolved	μg/l	< 1
6455	Zinc	μg/l	< 5
6841	Phenolic Odour	pres/nf	0
9901	Oxygen, Dissolved, % Saturation	%	96.3	98	94	95	89	93.1	100		103	97.9
9924	Oxygen, Dissolved as O2	mg/l	11.3	11.2	9.88	10.1	10.6	10.5	11		9.97	10.1

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sampling point River Hems At Littlehempston

Determinands

Sampling results

Samples from 16 Feb 2015 to 18 Apr 2017

Samples from 24 Feb 2010 to 17 Oct 2014

sampling point
River Hems At Littlehempston