sampling point
River Hems At Portbridge

Description	RIVER HEMS AT PORTBRIDGE
Sampling point ID	SW-70720878
Type	Freshwater – Rivers
Status	open
Location	easting northing: 278885 65976 lat lon: 50.481047, -3.708408
Area	Devon And Cornwall
Sub-Area	Central Devon And Cornwall
Summary	104 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.

27 determinands have been measured at this site

Action taken
Alky pH 4.5
Ammonia(N)
BOD ATU
Calcium - Ca
Cond @ 25C
Cu Filtered
Hardness
Hdnss Ca
Hdnss Mg
Magnesium-Mg
N Inorganic
N Oxidised
NH3 un-ion
Nitrate-N
Nitrite-N
O Diss %sat
Orthophospht
OrthophsFilt
Oxygen Diss
Phosphorus-P
Potassium- K
Temp Water
Type of Flow
WethPresPrec
Zinc - as Zn
pH

Displaying the twenty most recent samples. You can see all 104 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 26 Nov 2014 to 8 Mar 2017

Notation	Determinand	Units	26 Nov 2014 11:11	12 Jan 2015 11:14	7 Apr 2015 09:22	28 Jul 2015 12:50	9 Oct 2015 10:22	4 Feb 2016 12:53	12 May 2016 10:04	3 Aug 2016 11:55	14 Nov 2016 13:19	8 Mar 2017 09:40
0061	pH		7.7	7.5	7.88	8	7.8	7.54	7.9	7.9	8	7.6
0076	Temperature of Water	°C	10	9.5	9.3	13.5	9.3	10.3	13	16.8	9.7	9.6
0077	Conductivity at 25 C	μs/cm	309	303	324	353	336	312	327	357	350	309
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	0.03	< 0.03	< 0.03	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	4.87	4.96	3.64	2.79	3.52	4.79	2.67	1.81	2.53	5.93
0117	Nitrate as N	mg/l	4.8	4.95	3.63	2.78	3.52	4.78	2.66	1.81	2.52	5.92
0118	Nitrite as N	mg/l	0.0697	0.0096	0.0093	0.0071	0.0042	0.0109	0.0132	< 0.004	0.0065	0.0095
0119	Ammonia un-ionised as N	mg/l	< 0.00028	< 0.00017	< 0.0004	< 0.00071	< 0.00033	0.0002	< 0.00054	< 0.00072	< 0.00054	< 0.00021
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	90	86	110	124	116	98	117	133	121	89
0180	Orthophosphate, reactive as P	mg/l	0.028	0.017	0.014	0.05	0.025	0.016	0.016	0.073	0.025	0.021
9901	Oxygen, Dissolved, % Saturation	%	94	97	97.6	97	101	90.4	97	91	94	95
9924	Oxygen, Dissolved as O2	mg/l	10.6	11.1	11.2	10.1	11.6	10.1	10.2	8.81	10.7	10.8

Samples from 17 Oct 2006 to 17 Sep 2014

Notation	Determinand	Units	17 Oct 2006 09:30	30 Nov 2006 11:00	15 Dec 2006 12:30	14 Feb 2013 11:41	7 May 2013 09:11	13 Nov 2013 10:31	18 Nov 2013 11:36	6 Mar 2014 10:49	6 Jun 2014 12:46	17 Sep 2014 12:49
0061	pH		7.9	7.6	7.7	7.7	8.1	7.6	7.9	7.3	8.2	8
0076	Temperature of Water	°C	13.7	11	11	8.3	9.7	9.4	10.1	8.9	13.6	15.3
0077	Conductivity at 25 C	μs/cm				265	327	290	319	292	332	386
0085	BOD : 5 Day ATU	mg/l	< 1	< 1	< 1
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	< 0.03	< 0.03	0.065	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	6.02	8.18	8.1	3.55	3.79	6.08	5.94	3.32	2.87	1.34
0117	Nitrate as N	mg/l	6.01	8.17	8.09	3.52	3.78	6.07	5.92	3.31	2.86	1.34
0118	Nitrite as N	mg/l	0.0077	0.0095	0.0142	0.0274	0.0109	0.0115	0.0219	0.0066	0.0059	< 0.004
0119	Ammonia un-ionised as N	mg/l	< 0.00057	< 0.00024	< 0.0003	0.00053	< 0.00054	< 0.00021	< 0.00044	< 0.0001	< 0.00071	< 0.00081
0162	Alkalinity to pH 4.5 as CaCO3	mg/l				93	126	84	96	96	119	150
0180	Orthophosphate, reactive as P	mg/l	< 0.02	< 0.02	< 0.02	0.041	< 0.02	0.021	0.022	0.056	0.022	0.034
0348	Phosphorus, Total as P	mg/l	0.0237
1183	Weather : Precipitation		2	1	3
3267	Type of flow as description		2	4	1
9856	Orthophosphate, Filtered as P	mg/l	0.0309
9901	Oxygen, Dissolved, % Saturation	%	100	98	94	103	95	93	86	98	90	89
9924	Oxygen, Dissolved as O2	mg/l	10.3	10.8	10.3	12.1	10.8	10.6	9.67	11.3	9.33	8.89

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sampling point River Hems At Portbridge

Determinands

Sampling results

Samples from 26 Nov 2014 to 8 Mar 2017

Samples from 17 Oct 2006 to 17 Sep 2014

sampling point
River Hems At Portbridge