sampling point
Hampshire Avon U/S Downton Stw

Description	HAMPSHIRE AVON UPSTREAM OF DOWNTON STW
Sampling point ID	SW-50260338
Type	Freshwater – Rivers
Status	open
Location	easting northing: 417536 120789 lat lon: 50.986237, -1.751539
Area	Wessex
Sub-Area	East Wessex
Summary	222 samples taken between 2021 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.

32 determinands have been measured at this site

Action taken
Alky pH 4.5
Ammonia(N)
BOD ATU
CHLOR A
CHLOROPHYLL
Calcium - Ca
Chlorophyl-A
Cond @ 20C
Cond @ 25C
Cu Filtered
GCMS S-Vol
Hardness
Hdnss Ca
Hdnss Mg
Magnesium-Mg
N Inorganic
N Oxidised
NH3 un-ion
Nitrate-N
Nitrite-N
O Diss %sat
Orthophospht
Oxygen Diss
Potassium- K
SiO2 Rv
Sld Sus@105C
Temp Water
Type of Flow
WethPresPrec
Zinc - as Zn
pH

Displaying the twenty most recent samples. You can see all 222 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 4 Mar 2021 to 6 Dec 2021

Notation	Determinand	Units	4 Mar 2021 10:21	14 Apr 2021 11:17	19 May 2021 12:22	14 Jun 2021 10:09	27 Jul 2021 11:55	11 Aug 2021 11:46	15 Sep 2021 09:59	15 Oct 2021 13:34	15 Nov 2021 10:34	6 Dec 2021 10:20
0061	pH		8.1	8.17	8.09	7.98	7.77	8.01	7.63	7.96	8.06	7.92
0076	Temperature of Water	°C	9.1	9.3	13.8	18.6	17.8	16.2	15.7	12.8	11.1	6.6
0077	Conductivity at 25 C	μs/cm	572	563	550	564	556	586	578	584	578	579
0111	Ammoniacal Nitrogen as N	mg/l	0.044	0.036	0.083	0.062	< 0.03	< 0.03	< 0.03	0.032	0.045	0.052
0116	Nitrogen, Total Oxidised as N	mg/l	7	7.1	6.2	6.4	6.1	6	6.1	6.7	6.9	6.8
0117	Nitrate as N	mg/l	6.99	7.08	6.16	6.35	6.04	5.94	6.05	6.65	6.86	6.76
0118	Nitrite as N	mg/l	0.015	0.018	0.041	0.053	0.056	0.059	0.055	0.051	0.039	0.042
0119	Ammonia un-ionised as N	mg/l	0.00075	0.00062	0.002	0.00202	< 0.00058	< 0.00086	< 0.00036	0.00065	0.00089	0.00062
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	230	220	210	220	210	220	220	220	240	230
0180	Orthophosphate, reactive as P	mg/l	0.051	0.022	0.065	0.037	0.091	0.074	0.086	0.11	0.093	0.076
9901	Oxygen, Dissolved, % Saturation	%	88.6	96	103.9	88.3	88.5	86.6	68.9	87.7	88.7	90.1
9924	Oxygen, Dissolved as O2	mg/l	10.2	11	10.7	8.24	8.39	8.49	6.83	9.26	9.74	11

Samples from 13 Sep 2019 to 2 Feb 2021

Notation	Determinand	Units	13 Sep 2019 11:06	9 Oct 2019 10:09	8 Nov 2019 12:39	17 Dec 2019 11:54	15 Jan 2020 10:33	13 Feb 2020 12:14	11 Nov 2020 11:09	8 Dec 2020 11:08	6 Jan 2021 11:38	2 Feb 2021 10:43
0061	pH		7.71	7.77	7.88	8.02	7.93	8.06	7.83	8	8.03	8.04
0076	Temperature of Water	°C	15.7	12.3	8.3	8.2	9.4	7.8	11.4	6.4	6.5	7.9
0077	Conductivity at 25 C	μs/cm	561	538	510	553	520	548	570	566	576	554
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	0.041	0.05	0.088	0.071	0.055	0.06	0.052	0.04	0.054
0116	Nitrogen, Total Oxidised as N	mg/l	6	5.5	5.16	5.7	5.2	5.9	6.4	6.7	7	6.2
0117	Nitrate as N	mg/l	5.94	5.44	5.13	5.66	5.17	5.88	6.36	6.68	6.98	6.17
0118	Nitrite as N	mg/l	0.063	0.059	0.0279	0.04	0.033	0.018	0.036	0.025	0.017	0.028
0119	Ammonia un-ionised as N	mg/l	< 0.00043	0.00053	0.00061	0.00141	0.00106	0.00085	0.00083	0.00073	0.00056	0.00084
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	220	210	206	220	210	220	230	220	240	85
0180	Orthophosphate, reactive as P	mg/l	0.062	0.099	0.13	0.095	0.11	0.069	0.097	0.088	0.07	0.095
9901	Oxygen, Dissolved, % Saturation	%	73.3	82.7	84.7	90.3	83	94	88.2	88.4	92.1	89
9924	Oxygen, Dissolved as O2	mg/l	7.26	8.83	9.94	10.6	9.49	11.2	9.62	10.9	11.3	10.6

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sampling point Hampshire Avon U/S Downton Stw

Determinands

Sampling results

Samples from 4 Mar 2021 to 6 Dec 2021

Samples from 13 Sep 2019 to 2 Feb 2021

sampling point
Hampshire Avon U/S Downton Stw