sampling point
River Ottery At Hellescott Bridge

Description	RIVER OTTERY AT HELLESCOTT BRIDGE
Sampling point ID	SW-91221137
Type	Freshwater – Rivers
Status	open
Location	easting northing: 228540 87795 lat lon: 50.664514, -4.427482
Area	Devon And Cornwall
Sub-Area	Central Devon And Cornwall
Summary	210 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.

27 determinands have been measured at this site

Action taken
Alky pH 4.5
Ammonia(N)
BOD ATU
Calcium - Ca
Cond @ 25C
Cu Filtered
Hardness
Hdnss Ca
Hdnss Mg
MST Filter
Magnesium-Mg
N Inorganic
N Oxidised
NH3 un-ion
Nitrate-N
Nitrite-N
O Diss %sat
Orthophospht
Oxygen Diss
Potassium- K
Sld Sus@105C
Temp Water
Type of Flow
WethPresPrec
Zinc - as Zn
pH

Displaying the twenty most recent samples. You can see all 210 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 3 Aug 2023 to 5 Mar 2024

Notation	Determinand	Units	3 Aug 2023 14:10	4 Sep 2023 14:42	5 Oct 2023 13:09	6 Nov 2023 14:59	7 Dec 2023 15:19	15 Dec 2023 14:42	11 Jan 2024 13:56	31 Jan 2024 11:16	2 Feb 2024 13:27	5 Mar 2024 10:06
0061	pH		7.21	7.58	7.4	7.2	7.1	7.26	7.27	7.49	7.23	7.15
0076	Temperature of Water	°C	15.4	17.3	14	11.1	9.9	9.7	5.3	6.4	8.9	7.2
0077	Conductivity at 25 C	μs/cm	185	203	200	189	135	190	190	193	193	167
0111	Ammoniacal Nitrogen as N	mg/l	0.033	< 0.03	< 0.03	0.053	0.088	< 0.03	< 0.03	0.039	0.03	0.097
0116	Nitrogen, Total Oxidised as N	mg/l	2.2	1.5	1.7	2.4	1.4	2.9	2.8	2.5	2.3	2.1
0117	Nitrate as N	mg/l	2.19	1.5	1.7	2.39	1.39	2.89	2.79	2.49	2.29	2.09
0118	Nitrite as N	mg/l	0.0083	< 0.004	< 0.004	0.0062	0.0077	0.0097	0.0088	0.01	0.0091	0.012
0119	Ammonia un-ionised as N	mg/l	0.00015	< 0.00036	< 0.00019	0.00017	0.0002	< 0.0001	< 7.0e-05	0.00017	9.0e-05	0.00021
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	33	35	34	34	30	31	29	30	31	33
0180	Orthophosphate, reactive as P	mg/l	0.035	0.015	0.013	< 0.01	0.037	< 0.01	< 0.01	0.011	0.014	0.026
9901	Oxygen, Dissolved, % Saturation	%	97.7	102.2	95.4	94.8	94.1	96.5	97.9	98.2	97.5	95.1
9924	Oxygen, Dissolved as O2	mg/l	9.74	9.79	9.81	10.4	10.6	11	12.4	12.1	11.3	11.5

Samples from 4 Aug 2022 to 5 Jul 2023

Notation	Determinand	Units	4 Aug 2022 10:23	23 Sep 2022 12:54	7 Oct 2022 10:20	9 Nov 2022 10:54	6 Dec 2022 12:54	18 Jan 2023 13:37	2 Feb 2023 11:43	1 Mar 2023 11:28	13 Jun 2023 11:11	5 Jul 2023 12:04
0061	pH		7.9	7.6	7.13		7.14	7.28	7.07	7.45	7.62	7.62
0076	Temperature of Water	°C	17.5	13.3	13.3		7.5	6.5	8.1	5.4	17.5	14.7
0077	Conductivity at 25 C	μs/cm	439	258	288		201	189	198	197	205	220
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	0.095
0116	Nitrogen, Total Oxidised as N	mg/l	0.66	0.54	1.2	0.27	2.9	3.3	2.3	2.3	1.2	2.1
0117	Nitrate as N	mg/l	0.655	0.536	1.2	0.266	2.9	3.3	2.3	2.3	1.19	2.08
0118	Nitrite as N	mg/l	0.0046	< 0.004	< 0.004	< 0.004	0.0041	0.004	0.0044	< 0.004	0.0051	0.023
0119	Ammonia un-ionised as N	mg/l	< 0.00076	< 0.00028	< 0.0001		< 6.0e-05	< 8.0e-05	< 6.0e-05	< 0.00011	< 0.0004	0.00103
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	44	38	26	27	25	22	27	27	37	27
0180	Orthophosphate, reactive as P	mg/l	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	0.011	0.12	< 0.01	0.011	0.028
9901	Oxygen, Dissolved, % Saturation	%	85	96.9	90.1		94.8	96.5	99.6	98.9	87.7	93.6
9924	Oxygen, Dissolved as O2	mg/l	8.11	10.1	9.41		11.3	11.8	11.7	12.5	8.37	9.48

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sampling point River Ottery At Hellescott Bridge

Determinands

Sampling results

Samples from 3 Aug 2023 to 5 Mar 2024

Samples from 4 Aug 2022 to 5 Jul 2023

sampling point
River Ottery At Hellescott Bridge