sampling point
River Tamar At Druxton Bridge

Description	RIVER TAMAR AT DRUXTON BRIDGE
Sampling point ID	SW-81290160
Type	Freshwater – Rivers
Status	open
Location	easting northing: 234440 88330 lat lon: 50.671029, -4.344313
Area	Devon And Cornwall
Sub-Area	Central Devon And Cornwall
Summary	38 samples taken between 2017 and 2013

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.

12 determinands have been measured at this site

Alky pH 4.5
Ammonia(N)
Cond @ 25C
N Oxidised
NH3 un-ion
Nitrate-N
Nitrite-N
O Diss %sat
Orthophospht
Oxygen Diss
Temp Water
pH

Displaying the twenty most recent samples. You can see all 38 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 1 Mar 2016 to 27 Apr 2017

Notation	Determinand	Units	1 Mar 2016 10:39	6 May 2016 16:21	6 Jun 2016 12:17	14 Jul 2016 10:26	12 Sep 2016 10:38	27 Oct 2016 10:32	23 Nov 2016 12:06	10 Jan 2017 11:07	27 Jan 2017 10:24	27 Apr 2017 15:05
0061	pH		7.47	9.43	7.81	7.84	7.57	7.69	7.31	7.51	7.51	8.9
0076	Temperature of Water	°C	7.4	15	18.3	15.8	16.3	10	8.1	7.6	4.8	10.9
0077	Conductivity at 25 C	μs/cm	230	231	197	220	236	234	187	195	193	220
0111	Ammoniacal Nitrogen as N	mg/l	0.107	< 0.03	0.04	< 0.03	< 0.03	< 0.03	0.057	0.206	0.035	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	1.39	0.53	1.48	1.51	1.53	1.43	2.66	1.68	1.76	1.03
0117	Nitrate as N	mg/l	1.37	0.518	1.46	1.51	1.53	1.43	2.65	1.66	1.75	1.03
0118	Nitrite as N	mg/l	0.0174	0.0116	0.0229	0.0047	< 0.004	< 0.004	0.0099	0.022	0.0081	0.0049
0119	Ammonia un-ionised as N	mg/l	0.00048	< 0.00079	0.00087	< 0.00058	< 0.00033	< 0.00027	0.00019	0.00103	0.00014	< 0.00058
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	53	59	63	55	55	57	35	41	41	54
0180	Orthophosphate, reactive as P	mg/l	0.041	0.025	0.053	0.043	0.19	0.061	0.058	0.129	0.117	0.024
9901	Oxygen, Dissolved, % Saturation	%	97.6	140.1	98.1	99.6	91.7	94.8	101.6	95.2	99.5	114.6
9924	Oxygen, Dissolved as O2	mg/l	11.7	14.1	9.21	9.85	8.97	10.7	12	11.4	12.8	12.6

Samples from 11 May 2015 to 3 Feb 2016

Notation	Determinand	Units	11 May 2015 12:40	4 Jun 2015 11:23	8 Jul 2015 10:02	6 Aug 2015 10:50	10 Sep 2015 15:47	5 Oct 2015 13:57	9 Nov 2015 09:50	27 Nov 2015 10:07	11 Jan 2016 10:50	3 Feb 2016 09:40
0061	pH		7.7	7.47	7.77	8.23	8.66	7.68	7.59	7.5	7.22	7.3
0076	Temperature of Water	°C	15.5	13.4	16.4	15.7	15	12.9	11.7	10.8	6.6	6.6
0077	Conductivity at 25 C	μs/cm	218	191	250	225	217	217	198	211	178	206
0111	Ammoniacal Nitrogen as N	mg/l	0.038	0.055	< 0.03	< 0.03	< 0.03	< 0.03	0.035	0.043	0.109	0.113
0116	Nitrogen, Total Oxidised as N	mg/l	1.13	1.72	1.33	1.65	1.87	1.88	2.32	2.2	1.43	1.68
0117	Nitrate as N	mg/l	1.12	1.7	1.32	1.64	1.87	1.88	2.31	2.18	1.41	1.66
0118	Nitrite as N	mg/l	0.0145	0.0169	0.009	0.0067	< 0.004	< 0.004	0.0125	0.017	0.0177	0.0245
0119	Ammonia un-ionised as N	mg/l	0.00053	0.00039	< 0.00052	< 0.00083	< 0.00079	< 0.00033	0.00028	0.00027	0.00026	0.00032
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	51	42	65	55	51	49	43	46	39	48
0180	Orthophosphate, reactive as P	mg/l	0.062	0.064	0.068	0.073	0.065	0.037	0.053	0.045	0.045	0.068
9901	Oxygen, Dissolved, % Saturation	%	107.4	93.7	94	111	120.1	98.5	94.7	95.4	94	94.2
9924	Oxygen, Dissolved as O2	mg/l	10.7	9.76	9.18	11	12.1	10.4	10.3	10.5	11.5	11.5

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sampling point River Tamar At Druxton Bridge

Determinands

Sampling results

Samples from 1 Mar 2016 to 27 Apr 2017

Samples from 11 May 2015 to 3 Feb 2016

sampling point
River Tamar At Druxton Bridge