sampling point
River Tamar At Footbridge Below Lower Ta

Description	RIVER TAMAR AT FOOTBRIDGE BELOW LOWER TAMAR LAKE
Sampling point ID	SW-91210269
Type	Freshwater – Rivers
Status	closed
Location	easting northing: 229541 110755 lat lon: 50.871093, -4.423975
Area	Devon And Cornwall
Sub-Area	Central Devon And Cornwall
Summary	148 samples taken between 2012 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.

40 determinands have been measured at this site

Action taken
Alky pH 4.5
Ammonia(N)
BOD ATU
BOD5DyATUFil
CHLOR A
CHLOROPHYLL
Calcium - Ca
Chlorophyl-A
Cond @ 20C
Cond @ 25C
Cu Filtered
Hardness
Hdnss Ca
Hdnss Mg
K- Filtered
Magnesium-Mg
N Digested
N Inorganic
N Oxidised
N-Kjeldahl
NH3 un-ion
Nitrate-N
Nitrite-N
Nitrogen - N
O Diss %sat
Orthophospht
Oxygen Diss
Phosphate
Phosphorus-P
Potassium- K
SiO2 Rv
Sld NV@500C
Sld Sus@105C
Temp Water
TurbidityNTU
Type of Flow
WethPresPrec
Zinc - as Zn
pH

Displaying the twenty most recent samples. You can see all 148 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 10 Aug 2011 to 13 Jun 2012

Notation	Determinand	Units	10 Aug 2011 11:51	27 Sep 2011 11:18	7 Oct 2011 12:50	31 Oct 2011 11:33	23 Nov 2011 12:00	25 Jan 2012 12:10	21 Feb 2012 12:14	14 Mar 2012 11:58	25 Apr 2012 12:40	13 Jun 2012 13:42
0061	pH		8.08	7.16	7.62	6.5	7.17	7.35	7.7	7.89	7.4	7.3
0076	Temperature of Water	°C	17.8	15	13.09	12.47	10.41	8.1	6.9	11.3	10.1	16.8
0077	Conductivity at 25 C	μs/cm	163	167	168	157	165	164	131	165	156	151
0083	BOD : 5 Day ATU, Filtered	mg/l	< 1	< 1	1.2	< 1	< 1	< 1	< 1	< 1	< 1	< 1
0085	BOD : 5 Day ATU	mg/l	1.2	1.4	1.6	1.1	< 1	1.4	1.7	2.1	3.2	1.8
0111	Ammoniacal Nitrogen as N	mg/l	0.04	0.229	0.1	0.125	0.045	0.118	0.08	< 0.03	< 0.03	0.259
0114	Nitrogen, Kjeldahl as N	mg/l	0.64	0.77	0.58	0.61	0.29	0.61	0.31	0.3	0.61	0.64
0116	Nitrogen, Total Oxidised as N	mg/l	0.33	1.14	1.21	1.81	2.04	2.17	2.45	1.8	1.44	1.64
0117	Nitrate as N	mg/l	0.323	1.06	1.14	1.76	2.01	2.14	2.42	1.79	1.43	1.6
0118	Nitrite as N	mg/l	0.0075	0.0791	0.069	0.0531	0.0275	0.0283	0.0284	0.0133	0.006	0.0385
0119	Ammonia un-ionised as N	mg/l	0.00129	0.00089	0.00097	9.0e-05	0.00013	0.00042	0.00059	< 0.00047	< 0.00014	0.00158
0135	Solids, Suspended at 105 C	mg/l	< 3	3.63	4.7	5.18	3.35	16.7	6.35	7.3	14.1	7.03
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	40	38	37	35	33	29	28	34	34	34
0180	Orthophosphate, reactive as P	mg/l	< 0.02	0.021	< 0.02	0.033	0.033	0.04	0.025	< 0.02	0.022	< 0.02
0182	Silica, reactive as SiO2	mg/l	2.28	4.57	4.17	5.32	5.42	4.72	3.67	< 0.2	1.89	2.71
0348	Phosphorus, Total as P	mg/l	0.0447	0.0578	0.0569	0.0662	0.0569	0.102	0.0731	0.0531	0.0973	0.0747
1183	Weather : Precipitation		1	1	2	1	2	3	1	1	6	6
3683	Nitrogen, Total Inorganic : (Calculated)	mg/l	0.37	1.37	1.31	1.94	2.09	2.29	2.53	1.83	1.47	1.9
7887	Chlorophyll : Acetone Extract	μg/l	10.1	9.6	10.1	5.1	5.6	5.9	18.3	28.1	18.6	22.6
9686	Nitrogen, Total as N	mg/l	0.97	1.91	1.79	2.42	2.33	2.78	2.76	2.1	2.05	2.28
9901	Oxygen, Dissolved, % Saturation	%	94.6	79.3	100	89.2	95.5	96.5	92.1	104.8	97.2	87
9924	Oxygen, Dissolved as O2	mg/l	8.97	7.98	10.5	9.49	10.7	11.4	11.2	11.5	10.9	8.42

Samples from 6 Oct 2010 to 11 Jul 2011

Notation	Determinand	Units	6 Oct 2010 12:45	3 Nov 2010 15:15	19 Nov 2010 11:00	14 Jan 2011 12:55	2 Feb 2011 13:21	7 Mar 2011 15:30	16 Mar 2011 14:30	10 May 2011 13:23	20 Jun 2011 14:07	11 Jul 2011 13:30
0061	pH		7.1	8.05	7.3	7.28	7.55	7.4	7.64	8.97	8.54	8.02
0076	Temperature of Water	°C	15.7	12.1	8.31	7.9	4.4	8.9	13.77	16.9	16.5	18.75
0077	Conductivity at 25 C	μs/cm	142	165	150	140.3	150	151	152	162	154.9	159
0083	BOD : 5 Day ATU, Filtered	mg/l	< 1	< 1	< 1	< 1	< 1	< 1	< 1	< 1	< 1	< 1
0085	BOD : 5 Day ATU	mg/l	1.4	< 1	< 1	1.9	1.7	2	2.5	2	1.3	1.3
0111	Ammoniacal Nitrogen as N	mg/l	0.048	0.073	0.073	0.131	0.13	< 0.03	< 0.03	0.039	0.036	0.035
0114	Nitrogen, Kjeldahl as N	mg/l	0.64	0.55	0.5	0.38	0.52	0.41	0.38	0.56	2.15	0.57
0116	Nitrogen, Total Oxidised as N	mg/l	1.16	1.37	1.88	2.11	2.27	2.23	1.89	0.63	0.27	0.23
0117	Nitrate as N	mg/l	1.15	1.32	1.83	2.09	2.24	2.22	1.88	0.609	0.245	0.22
0118	Nitrite as N	mg/l	0.0089	0.0462	0.0483	0.0163	0.0259	0.0104	0.0116	0.0213	0.025	0.0101
0119	Ammonia un-ionised as N	mg/l	0.00017	0.00155	0.00024	0.0004	0.00056	< 0.00013	< 0.00032	0.00118	0.00105	0.00121
0135	Solids, Suspended at 105 C	mg/l	17.5	4.68	10.1	18.2	7.2	11.8	7.07	5.32	< 3	< 3
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	33	33	29	24	29	33	31	42	36	37
0180	Orthophosphate, reactive as P	mg/l	< 0.02	< 0.02	0.024	0.026	0.027	< 0.02	< 0.02	< 0.02	< 0.02	< 0.02
0182	Silica, reactive as SiO2	mg/l	5.29	5.11	4.77	3.07	2.79	< 0.2	0.59	1.18	0.95	1.26
0348	Phosphorus, Total as P	mg/l	0.14	0.0434	0.0687	0.1	0.0694	0.0516	0.0533	0.0464	0.0374	0.0343
1183	Weather : Precipitation		6	3	2	6	1	1	1	1	2	1
3683	Nitrogen, Total Inorganic : (Calculated)	mg/l	1.21	1.44	1.95	2.24	2.4	2.26	1.92	0.669	0.306	0.265
7887	Chlorophyll : Acetone Extract	μg/l	42.1	4.8	7.8	27.7	21.6	30.6	24.8	20.7	5.5	5.2
9686	Nitrogen, Total as N	mg/l	1.8	1.92	2.38	2.49	2.79	2.64	2.27	1.19	2.42	0.8
9901	Oxygen, Dissolved, % Saturation	%	94	93.3	102	97.5	94.9	93.4	92.5	102.5	99.3	100.1
9924	Oxygen, Dissolved as O2	mg/l	9.31	10	12	11.6	12.3	10.8	9.56	9.9	9.67	9.31

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sampling point River Tamar At Footbridge Below Lower Ta

Determinands

Sampling results

Samples from 10 Aug 2011 to 13 Jun 2012

Samples from 6 Oct 2010 to 11 Jul 2011

sampling point
River Tamar At Footbridge Below Lower Ta