sampling point
St Leonards - Hatchet Stream

Description	HATCHET STREAM AT ST LEONARDS
Sampling point ID	SO-G0004151
Type	Freshwater – Rivers
Status	open
Location	easting northing: 440652 98426 lat lon: 50.783987, -1.424709
Area	Solent And South Downs
Sub-Area	L&W West Ssd
Summary	235 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.

24 determinands have been measured at this site

Alky pH 4.5
Ammonia(N)
BOD ATU
C - Org Filt
COPA
Calcium - Ca
Chloride Ion
Cond @ 20C
Cond @ 25C
Copper - Cu
Cu Filtered
Hardness
Magnesium-Mg
N Oxidised
NH3 un-ion
Nitrate-N
Nitrite-N
O Diss %sat
Orthophospht
Oxygen Diss
Temp Water
Zinc - as Zn
Zn- Filtered
pH

Displaying the twenty most recent samples. You can see all 235 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 22 Sep 2023 to 19 Jun 2024

Notation	Determinand	Units	22 Sep 2023 16:09	16 Oct 2023 12:45	24 Nov 2023 09:56	8 Dec 2023 11:41	15 Jan 2024 13:10	19 Feb 2024 13:53	18 Mar 2024 09:04	26 Apr 2024 14:02	17 May 2024 12:33	19 Jun 2024 08:59
0061	pH		7.02	7.37	7.06	7.64	7.16	7.21	7.27	7.88	7.53	6.86
0076	Temperature of Water	°C	14.7	9.3	9.1	7.1	4	11.1	10.4	12.6	18.7	14.4
0077	Conductivity at 25 C	μs/cm	267	361	229	176	234	169	205	44310	33064	3115
0085	BOD : 5 Day ATU	mg/l						< 2	1.2	< 3	2.2	< 1
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	< 0.03	< 0.03	< 0.03	0.037	< 0.03	< 0.03	0.31	0.46	0.69
0116	Nitrogen, Total Oxidised as N	mg/l	2.5	4	2.7	1.2	3	1.3	1.7	0.21	0.42	7.7
0117	Nitrate as N	mg/l	2.49	3.99	2.69	1.2	2.99	1.29	1.69	0.203	0.391	7.64
0118	Nitrite as N	mg/l	0.0054	0.0061	0.011	< 0.004	0.015	0.006	0.0067	0.0075	0.029	0.065
0119	Ammonia un-ionised as N	mg/l	< 8.0e-05	< 0.00012	< 6.0e-05	< 0.00019	6.0e-05	< 0.0001	< 0.00011	0.00521	0.00548	0.00129
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	43	62	44	36	48	37	46	66	69	78
0180	Orthophosphate, reactive as P	mg/l	0.2	0.25	0.077	0.061	0.076	0.067	0.045	< 0.01	0.03	0.33
9901	Oxygen, Dissolved, % Saturation	%	76.2	87.8	75.2	86.8	91.2	96.3	88.4	116.6	132.9	71.1
9924	Oxygen, Dissolved as O2	mg/l	7.71	10.1	8.66	10.5	11.9	10.6	9.87	12.4	12.4	7.25

Samples from 19 Jul 2022 to 1 Sep 2023

Notation	Determinand	Units	19 Jul 2022 08:33	15 Sep 2022 10:44	9 Nov 2022 10:37	25 Jan 2023 10:26	2 Mar 2023 14:40	18 May 2023 14:16	8 Jun 2023 13:39	16 Jun 2023 09:42	17 Jul 2023 11:45	1 Sep 2023 14:17
0061	pH		6.93	7.08	7	7.88	7.51	7.68	7.18	7.23	7.41	7.41
0076	Temperature of Water	°C	19.5	14.7	12.1	2.9	6.6	14.6	16.9	15.5	16.5	17.2
0077	Conductivity at 25 C	μs/cm	10992	465	277	305	292	295	5395	850	979	316
0085	BOD : 5 Day ATU	mg/l								< 2
0111	Ammoniacal Nitrogen as N	mg/l	0.32	< 0.03	< 0.03	< 0.03	< 0.03	< 0.03	0.072	0.21	0.09	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	7.9	3.4	2.6	3.6	4.4	5.2	15	10	7	4.2
0117	Nitrate as N	mg/l	7.81	3.39	2.59	3.59	4.39	5.19	14.9	9.9	6.94	4.19
0118	Nitrite as N	mg/l	0.091	0.011	0.0077	0.01	0.0082	0.014	0.14	0.1	0.061	0.013
0119	Ammonia un-ionised as N	mg/l	0.00102	< 9.0e-05	< 7.0e-05	< 0.00025	< 0.00014	< 0.00037	0.00034	0.00099	0.00069	< 0.00024
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	84	59	37	36	45	50	69	77	88	68
0180	Orthophosphate, reactive as P	mg/l	0.39	0.43	0.16	0.065	0.11	0.31	0.75	0.41	0.54	0.56
9901	Oxygen, Dissolved, % Saturation	%	32	78.9	82.3	93.4	110	105.4	85.8	70.2	89.9	80.4
9924	Oxygen, Dissolved as O2	mg/l	2.93	7.99	8.83	12.6	13.5	10.7	8.29	6.98	8.76	7.72

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sampling point St Leonards - Hatchet Stream

Determinands

Sampling results

Samples from 22 Sep 2023 to 19 Jun 2024

Samples from 19 Jul 2022 to 1 Sep 2023

sampling point
St Leonards - Hatchet Stream