sampling point
River Allen At Trevillick

Description	RSN0099 TREVILLICK
Sampling point ID	SW-RSN0099
Type	Freshwater – Rivers
Status	open
Location	easting northing: 206647 79156 lat lon: 50.580053, -4.732404
Area	Devon And Cornwall
Sub-Area	West Devon And Cornwall
Summary	24 samples taken between 2022 and 2021

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.

16 determinands have been measured at this site

Alky pH 4.5
Ammonia(N)
C - Org Filt
Chloride Ion
Cond @ 25C
N Oxidised
NH3 un-ion
Nitrate-N
Nitrite-N
O Diss %sat
Orthophospht
Oxygen Diss
Phosphorus-P
SiO2 Rv
Temp Water
pH

Displaying the twenty most recent samples. You can see all 24 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 15 Mar 2022 to 9 Dec 2022

Notation	Determinand	Units	15 Mar 2022 10:42	1 Apr 2022 10:10	13 May 2022 09:48	27 Jun 2022 14:25	26 Jul 2022 14:57	12 Aug 2022 10:42	22 Sep 2022 15:29	6 Oct 2022 10:29	3 Nov 2022 10:28	9 Dec 2022 10:35
0061	pH		7.78	7.83	7.85	7.91	7.82	8.13	7.86	7.79	7.23	7.79
0076	Temperature of Water	°C	9.4	7.5	11.4	13.8	15.7	16.6	12.2	11.8	11.5	6.6
0077	Conductivity at 25 C	μs/cm	219	261	292	315	316	335	334	314	243	242
0111	Ammoniacal Nitrogen as N	mg/l	0.015	0.0045	0.0064	0.012	0.004	0.014	0.021	0.0054	0.023	0.018
0116	Nitrogen, Total Oxidised as N	mg/l	3.7	4.3	4.8	4.9	3.5	4.9	5.1	4	2.9	4.2
0117	Nitrate as N	mg/l	3.7	4.3	4.8	4.89	3.5	4.9	5.08	4	2.89	4.19
0118	Nitrite as N	mg/l	0.0039	0.0022	0.0033	0.01	0.0021	0.002	0.019	0.0041	0.0084	0.0082
0119	Ammonia un-ionised as N	mg/l	0.00016	5.0e-05	9.0e-05	0.00024	7.0e-05	0.00041	0.00033	7.0e-05	8.0e-05	0.00016
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	43	53	61	64	57	72	74	59	36	45
0172	Chloride	mg/l	24	25	26	28	27	28	30	30	29	25
0180	Orthophosphate, reactive as P	mg/l	0.022	0.017	0.029	0.081	0.045	0.065	0.11	0.054	0.036	0.021
0182	Silica, reactive as SiO2	mg/l	6.2	9.1	9.9	11	8.9	11	11	11	6.5	8.5
0301	Carbon, Organic, Dissolved as C :- {DOC}	mg/l	1.2	0.8	1.1	1.7	1.3	1.8	1.6	2.3	3.9	1.1
0348	Phosphorus, Total as P	mg/l	0.043								0.12	0.032
9901	Oxygen, Dissolved, % Saturation	%	101	100.2	97.4	99.5	99.8	100.5	97.4	95	98.2	97.6
9924	Oxygen, Dissolved as O2	mg/l	11.5	12	10.6	10.3	9.89	9.77	10.4	10.3	10.7	11.9

Samples from 4 May 2021 to 17 Feb 2022

Notation	Determinand	Units	4 May 2021 10:59	18 Jun 2021 12:20	23 Jul 2021 14:37	20 Aug 2021 12:04	16 Sep 2021 12:05	14 Oct 2021 11:27	12 Nov 2021 10:50	7 Dec 2021 09:29	13 Jan 2022 15:00	17 Feb 2022 09:26
0061	pH		7.91	8	7.52	7.94	7.93	7.72	7.56	7.42	7.75	7.7
0076	Temperature of Water	°C	9.8	14	16.4	15.4	13.9	10.7	12	9.3	9.1	9.4
0077	Conductivity at 25 C	μs/cm	290	270	257	286	292	246	226	224	235	234
0111	Ammoniacal Nitrogen as N	mg/l	0.0054	0.029	0.0056	0.0046	0.0053	0.0061	0.0097	0.011	0.015	0.0062
0116	Nitrogen, Total Oxidised as N	mg/l	4.1	4.3	4.1	2.7	4.6	3.3	3.5	3.2	3.9	3.8
0117	Nitrate as N	mg/l	4.1	4.28	4.09	2.7	4.6	3.3	3.49	3.19	3.9	3.8
0118	Nitrite as N	mg/l	0.0044	0.025	0.0061	0.0026	0.0033	0.003	0.0065	0.0062	0.0039	0.0025
0119	Ammonia un-ionised as N	mg/l	8.0e-05	0.00071	5.0e-05	0.00011	0.00011	6.0e-05	8.0e-05	5.0e-05	0.00015	5.0e-05
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	52	59	50	53	62	46	45	40	43	43
0172	Chloride	mg/l	26	26	26	25	28	24	24	24	24	25
0180	Orthophosphate, reactive as P	mg/l	0.017	0.07	0.043	0.042	0.044	0.023	0.025	0.019	0.022	0.023
0182	Silica, reactive as SiO2	mg/l	8.3	8.9	8.4	9.6	11	7.4	7.9	6.8	7.4	6.7
0301	Carbon, Organic, Dissolved as C :- {DOC}	mg/l	1.3	1.5	1.3	1.3	1.5	1.2	2.2	2.3	1.5	1.5
0348	Phosphorus, Total as P	mg/l	0.032	0.096	0.064	0.062	0.056	0.038	0.035	0.11	0.026	0.041
9901	Oxygen, Dissolved, % Saturation	%	94	100	96.7	95.3	99	98.6	100.1	99.4	99.7	91.6
9924	Oxygen, Dissolved as O2	mg/l	10.6	10.3	9.44	9.5	10.2	10.9	10.8	11.4	11.5	10.5

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sampling point River Allen At Trevillick

Determinands

Sampling results

Samples from 15 Mar 2022 to 9 Dec 2022

Samples from 4 May 2021 to 17 Feb 2022

sampling point
River Allen At Trevillick