sampling point
Chelfham Stream U/S Chelfham Mill Sch.

Description	CHELFHAM STREAM U/S CHELFHAM MILL SCHOOL REED BED
Sampling point ID	SW-73080526
Type	Freshwater – Unspecified
Status	open
Location	easting northing: 261063 135600 lat lon: 51.102814, -3.985802
Area	Devon And Cornwall
Sub-Area	East Devon And Cornwall
Summary	31 samples taken between 2021 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 31 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 17 May 2016 to 24 Nov 2021

Notation	Determinand	Units	17 May 2016 12:42	11 Aug 2016 12:51	1 Nov 2016 11:21	15 Mar 2017 10:52	12 Apr 2021 12:48	28 Jun 2021 13:53	29 Jul 2021 11:32	20 Aug 2021 10:54	29 Sep 2021 12:17	24 Nov 2021 11:15
0061	pH		8	7.9	7.7	7.89	8	7.7	7.9	7.8	7.7	8.1
0076	Temperature of Water	°C	13.2	13.6	10.9	10.2	8.8	14.9	14.7	14.9	11.7	8.6
0077	Conductivity at 25 C	μs/cm	221	192	118	212	104	207	219	218	219	196
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	< 0.03	0.052	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	3.48	3.22	3.15	4.69	3.5	3.6	3.4	3.8	3.5	4
0117	Nitrate as N	mg/l	3.46	3.21	3.14	4.68	3.49	3.59	3.39	3.8	3.5	4
0118	Nitrite as N	mg/l	0.0207	0.0136	0.011	0.0124	0.0058	0.0072	0.007	< 0.004	0.0042	< 0.004
0119	Ammonia un-ionised as N	mg/l	< 0.00069	< 0.00057	0.00051	< 0.00043	< 0.0005	< 0.0004	< 0.00062	< 0.0005	< 0.00031	< 0.00049
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	63	50	57	52	54	56	61	61	61	52
0180	Orthophosphate, reactive as P	mg/l	0.05	0.054	0.106	0.037	0.046	0.055	0.059	0.059	0.078	0.039
9901	Oxygen, Dissolved, % Saturation	%	98	90	103	97.7	96	92	104	98	97	99
9924	Oxygen, Dissolved as O2	mg/l	10.3	9.33	11.4	11	11.1	9.27	10.5	9.88	10.5	11.5

Samples from 21 Feb 2014 to 29 Mar 2016

Notation	Determinand	Units	21 Feb 2014 12:48	21 Mar 2014 11:00	25 Jun 2014 11:57	12 Sep 2014 12:29	11 Dec 2014 13:01	22 Jan 2015 12:39	21 Apr 2015 09:32	9 Jul 2015 13:32	27 Oct 2015 10:49	29 Mar 2016 11:47
0061	pH		7.6	8	8.1	7.7	7.8	7.8	7.89	7.6	7.71	8.05
0076	Temperature of Water	°C	8.8	8.9	15	13.4	8	8.2	10	14.6	11.9	7.9
0077	Conductivity at 25 C	μs/cm	182	203	217	204	215	196	222	228	210	190
0111	Ammoniacal Nitrogen as N	mg/l	0.074	< 0.03	< 0.03	< 0.03	0.044	0.05	< 0.03	0.03	< 0.03	0.146
0116	Nitrogen, Total Oxidised as N	mg/l	3.32	3.8	3.71	3.11	3.64	4.04	3.87	3.6	3.16	3.15
0117	Nitrate as N	mg/l	3.29	3.78	3.69	3.09	3.61	4.03	3.85	3.59	3.15	3.12
0118	Nitrite as N	mg/l	0.0256	0.0245	0.019	0.0167	0.0262	0.0122	0.0206	0.013	0.0113	0.0264
0119	Ammonia un-ionised as N	mg/l	0.0005	< 0.0005	< 0.00079	< 0.00036	0.00044	0.00051	< 0.00043	0.00031	< 0.00033	0.00228
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	44	42	57	55	55	45	58	62	60	47
0180	Orthophosphate, reactive as P	mg/l	0.045	0.047	0.067	0.094	0.078	0.038	0.025	0.082	0.077	0.105
9901	Oxygen, Dissolved, % Saturation	%	105	91	97	99	105	95	96.7	103	76.1	91.1
9924	Oxygen, Dissolved as O2	mg/l	12.2	10.5	9.76	10.3	12.4	11.2	10.9	10.4	8.2	10.8

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sampling point Chelfham Stream U/S Chelfham Mill Sch.

Determinands

Sampling results

Samples from 17 May 2016 to 24 Nov 2021

Samples from 21 Feb 2014 to 29 Mar 2016

sampling point
Chelfham Stream U/S Chelfham Mill Sch.