sampling point
River Thrushel Above Rivermead

Description	RSN0643 RIVERMEAD
Sampling point ID	SW-RSN0643
Type	Freshwater – Rivers
Status	open
Location	easting northing: 250018 91331 lat lon: 50.702223, -4.125246
Area	Devon And Cornwall
Sub-Area	Central Devon And Cornwall
Summary	9 samples taken during 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

Samples from 5 Feb 2021 to 15 Dec 2021

Notation	Determinand	Units	5 Feb 2021 12:35	25 Feb 2021 13:56	29 Apr 2021 11:44	14 Jul 2021 15:00	31 Aug 2021 17:43	14 Sep 2021 14:00	14 Oct 2021 15:39	30 Nov 2021 13:16	15 Dec 2021 12:30
0061	pH		7.61	7.29	7.79	7.07	7.37	7.09	7.53	7.7	7.38
0076	Temperature of Water	°C	7.4	9	8.1	15.2	14.8	15.4	10.8	7.9	10.1
0077	Conductivity at 25 C	μs/cm	131	134	198	148	187	184	157	360	137
0111	Ammoniacal Nitrogen as N	mg/l	0.04	0.024	0.0068	0.011	0.021	0.006	0.005	0.018	0.019
0116	Nitrogen, Total Oxidised as N	mg/l	1.1	0.95	0.44	0.78	0.73	0.59	0.74	0.67	0.95
0117	Nitrate as N	mg/l	1.1	0.946	0.438	0.777	0.713	0.586	0.739	0.668	0.947
0118	Nitrite as N	mg/l	0.0029	0.0042	0.0021	0.0026	0.017	0.0037	0.0011	0.0025	0.0032
0119	Ammonia un-ionised as N	mg/l	0.00025	8.0e-05	7.0e-05	4.0e-05	0.00013	2.0e-05	3.0e-05	0.00014	8.0e-05
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	21	21	41	30	46	42	31	27	22
0172	Chloride	mg/l	16	16	21	16	20	20	18	81	17
0180	Orthophosphate, reactive as P	mg/l	0.013	0.015	0.0075	0.015	0.016	0.025	0.01	0.014	0.012
0182	Silica, reactive as SiO2	mg/l	4.2	4.2	5.1	5.1	6.6	7.7	6.6	5.8	5.3
0301	Carbon, Organic, Dissolved as C :- {DOC}	mg/l	3.2	3.6	2.3	4.4	3.5	4.4	3.1	3.9	3.4
0348	Phosphorus, Total as P	mg/l	0.026	0.028	0.015	0.043	0.037	0.039	0.019	0.025	0.023
9901	Oxygen, Dissolved, % Saturation	%	102.1	86.9	92.9	97.6	94.3	94.8	99.3	96.5	95.5
9924	Oxygen, Dissolved as O2	mg/l	12.3	10	11	9.77	9.52	9.45	11	11.4	10.7