sampling point
River Coly At Colyford

Description	RIVER COLY AT COLYFORD
Sampling point ID	SW-70220505
Type	Freshwater – Rivers
Status	open
Location	easting northing: 325339 92658 lat lon: 50.728722, -3.05919
Area	Devon And Cornwall
Sub-Area	East Devon And Cornwall
Summary	234 samples taken between 2024 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.

37 determinands have been measured at this site

Action taken
Alky pH 4.5
Ammonia(N)
BOD ATU
CHLOROPHYLL
Calcium - Ca
Chloride Ion
Cond @ 20C
Cond @ 25C
Cu Filtered
Hardness
Hdnss Ca
Hdnss Mg
Magnesium-Mg
Mineral Oils
N Inorganic
N Oxidised
NH3 un-ion
Nitrate-N
Nitrite-N
O Diss %sat
Oil & Grs Vs
Orthophospht
Oxygen Diss
Phenol Odour
PhenolicOdor
Phosphate
Phosphorus-P
Potassium- K
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 234 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 25 Oct 2023 to 6 Sep 2024

Notation	Determinand	Units	25 Oct 2023 12:11	27 Nov 2023 12:57	12 Dec 2023 10:56	10 Jan 2024 11:26	8 Feb 2024 12:22	22 Mar 2024 09:57	17 Jun 2024 09:55	31 Jul 2024 12:59	2 Aug 2024 11:46	6 Sep 2024 15:47
0061	pH		7.5	7.91	7.45	7.9	7.64	8	8.14	8.13	8.14	8.19
0076	Temperature of Water	°C	12.1	10	10.8	3.8	9.9	10.1	12.8	19.3	18.2	15.3
0077	Conductivity at 25 C	μs/cm	240	350	280	330	220	330	369	403	398	298
0085	BOD : 5 Day ATU	mg/l	3	1.3	1.6	1.1	4.8	1.5
0111	Ammoniacal Nitrogen as N	mg/l	0.076	0.085	0.044	0.033	0.11	< 0.03	< 0.03	< 0.03	< 0.03	0.032
0116	Nitrogen, Total Oxidised as N	mg/l	3.5	2.5	2.3	2.9	2.1	2.6	2.7	2.7	2.7	2.4
0117	Nitrate as N	mg/l	3.49	2.48	2.29	2.89	2.08	2.59	2.69	2.69	2.69	2.39
0118	Nitrite as N	mg/l	0.015	0.016	0.0095	0.0084	0.016	0.014	0.01	0.011	0.0085	0.01
0119	Ammonia un-ionised as N	mg/l	0.00052	0.00126	0.00024	0.0003	0.00088	< 0.00055	< 0.00067	< 0.00108	< 0.00099	0.00086
0135	Solids, Suspended at 105 C	mg/l	82	10	12	4.5	160	< 3
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	57	94	80	87	61	90	93	100	110	67
0172	Chloride	mg/l	16	20	17	20	16	18
0180	Orthophosphate, reactive as P	mg/l	0.13	0.091	0.088	0.059	0.14	0.063	0.053	0.076	0.074	0.1
0192	Phosphate :- {TIP}	mg/l	0.27	0.13	0.11	0.069	0.42	0.051
0348	Phosphorus, Total as P	mg/l	0.34	0.12	0.13	0.15	0.52	0.082
1183	Weather : Precipitation		6	1	16	13	6	2
3683	Nitrogen, Total Inorganic : (Calculated)	mg/l	3.58	2.59	2.34	2.93	2.21	2.63
6396	Turbidity	ntu	68	12	12	3.4	95	3.6
7887	Chlorophyll : Acetone Extract	μg/l	13	5.5	1.5	< 0.5	12	0.84
9901	Oxygen, Dissolved, % Saturation	%	97.9	100.3	99.3	99	99.2	100	103	104.9	103.1	97.6
9924	Oxygen, Dissolved as O2	mg/l	10.5	11.3	11	13	11.2	11.2	10.9	9.65	9.7	9.75

Samples from 6 Dec 2022 to 28 Sep 2023

Notation	Determinand	Units	6 Dec 2022 10:30	1 Feb 2023 14:50	15 Feb 2023 09:57	2 Mar 2023 11:00	2 May 2023 10:17	25 May 2023 11:19	19 Jun 2023 10:40	28 Jul 2023 12:01	8 Aug 2023 09:52	28 Sep 2023 13:15
0061	pH		7.94	8.03	8.07	8.45	8.15	8.57	8.12	8.3	7.98	8.04
0076	Temperature of Water	°C	6.9	6.7	6.4	6	11.1	14.3	17	16.9	14.8	14.9
0077	Conductivity at 25 C	μs/cm	380		390	390	350	400	410		400	380
0085	BOD : 5 Day ATU	mg/l	1.2	1.3	< 1	1.2	1.2	1.1	< 1	< 1	< 1	< 1
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	3.2	3.2	3.1	2.7	2	2.4	2.5	2.2	2.1	2.2
0117	Nitrate as N	mg/l	3.19	3.19	3.09	2.7	1.99	2.39	2.49	2.19	2.09	2.19
0118	Nitrite as N	mg/l	0.0068	0.0072	0.0053	0.0046	0.0066	0.0088	0.014	0.0081	0.0063	0.0094
0119	Ammonia un-ionised as N	mg/l	< 0.00038	< 0.00043	< 0.00042	< 0.00041	< 0.00059	< 0.00075	< 0.00091	< 0.0009	< 0.00074	< 0.00078
0135	Solids, Suspended at 105 C	mg/l	< 3	4.4	4	< 3	5.2	3.6	6.1	5.9	3.4	< 3
0143	Solids, non-volatile at 500 C	mg/l	< 20	< 20	< 20	< 20
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	91	92	97	69	95	110	100	93	97	95
0172	Chloride	mg/l	22	21	22	20	18	20	21	21	20	20
0180	Orthophosphate, reactive as P	mg/l	0.059	0.056	0.039	< 0.01	0.044	0.046	0.067	0.08	0.067	0.08
0192	Phosphate :- {TIP}	mg/l	0.063	0.062	0.041	< 0.02	0.056	0.057	0.079	0.095	0.075	0.087
0348	Phosphorus, Total as P	mg/l	0.067	0.065	0.046	0.019	0.063	0.066	0.089	0.1	0.079	0.098
1183	Weather : Precipitation		1	1	1	1	1	1	1	3	4	1
3683	Nitrogen, Total Inorganic : (Calculated)	mg/l	3.23	3.23	3.13	2.73	2.03	2.43	2.53	2.23	2.13	2.23
6396	Turbidity	ntu				< 1	3.6	2.8	3.5		3.7	3.4
7887	Chlorophyll : Acetone Extract	μg/l	1.1	1	9.3	7.6	6.3	3.5	3.3	2.4	2.4	1.5
9901	Oxygen, Dissolved, % Saturation	%	120	101.9	102.9	111	103	113.2	103	103.1	98	100.3
9924	Oxygen, Dissolved as O2	mg/l	14.6	12.4	12.7	13.8	11.3	11.6	9.93	9.96	9.9	10.1

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sampling point River Coly At Colyford

Determinands

Sampling results

Samples from 25 Oct 2023 to 6 Sep 2024

Samples from 6 Dec 2022 to 28 Sep 2023

sampling point
River Coly At Colyford