sampling point
Rocks Hill Bridge - Forge Str

Description	ROCKS HILL BRIDGE OVER FORGE STREAM, WESTFIELD
Sampling point ID	SO-E0004850
Type	Freshwater – Rivers
Status	open
Location	easting northing: 581192 116965 lat lon: 50.923685, 0.576712
Area	Kent And South London
Sub-Area	L&W Kent And East Sussex Ksl
Summary	100 samples taken between 2024 and 2009

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.

13 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
TurbidityNTU
pH

Displaying the twenty most recent samples. You can see all 100 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 4 Aug 2022 to 18 Jul 2024

Notation	Determinand	Units	4 Aug 2022 11:20	6 Sep 2022 13:00	11 Oct 2022 14:50	15 Nov 2022 11:06	7 Dec 2022 15:29	24 Jan 2023 15:09	7 Feb 2023 12:45	7 Mar 2023 14:09	13 Jun 2024 10:24	18 Jul 2024 10:24
0061	pH		7.59	7.28	7.8	7	6.99	7.19	7.17	7.22	7.63	7.72
0076	Temperature of Water	°C	16.6	15.4	9.6	11.8	6.2	6	5.4	6.8	11.3	16.9
0077	Conductivity at 25 C	μs/cm	390	209	504	350	311	300	312	335	339	549
0111	Ammoniacal Nitrogen as N	mg/l	0.047	< 0.03	< 0.03	< 0.03	0.26	0.043	0.051	0.041	0.031	0.031
0116	Nitrogen, Total Oxidised as N	mg/l	0.25	< 0.2	< 0.2	2.5	2.2	2.8	2.4	1.6	1.2	0.79
0117	Nitrate as N	mg/l	0.246	< 0.196	< 0.196	2.49	2.17	2.8	2.39	1.59	1.19	0.785
0118	Nitrite as N	mg/l	< 0.004	< 0.004	< 0.004	0.0065	0.034	0.0044	0.0053	0.0062	0.0074	0.0055
0119	Ammonia un-ionised as N	mg/l	0.00055	< 0.00016	< 0.00034	< 6.0e-05	0.00036	9.0e-05	0.0001	0.0001	0.00027	0.0005
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	100	100	91	52	88	35	41	50	65	75
0180	Orthophosphate, reactive as P	mg/l	0.017	0.019	0.018	0.023	0.058	< 0.01	0.012	0.013	0.021	0.019
6396	Turbidity	ntu	48	34	5.4
9901	Oxygen, Dissolved, % Saturation	%	63.3	64.1	87.5	72.1	89.7	96.4	93.1	97.9	90.4	89
9924	Oxygen, Dissolved as O2	mg/l	6.15	6.39	9.95	7.79	11.1	12	11.8	11.9	9.88	8.6

Samples from 5 Sep 2016 to 28 Jul 2022

Notation	Determinand	Units	5 Sep 2016 13:42	19 Oct 2016 10:07	2 Nov 2016 14:49	5 Jan 2017 09:50	21 Feb 2017 12:46	19 Apr 2017 10:31	21 Apr 2022 12:45	6 May 2022 10:45	23 Jun 2022 12:31	28 Jul 2022 11:55
0061	pH		7.51	7.6	7.75	7.49	7.72	7.71	7.83	7.45	7.91	7.7
0076	Temperature of Water	°C	15.5	9.6	8.5	2.8	10	7.9	11.7	11.9	14.3	13.6
0077	Conductivity at 25 C	μs/cm	365	366	366	345	324	327	399	332	1435	388
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	< 0.03	< 0.03	0.056	0.032	< 0.03	< 0.03	< 0.03	0.042	0.041
0116	Nitrogen, Total Oxidised as N	mg/l	0.39	0.32	0.22	2.05	2.44	1.4	1.1	0.95	0.96	0.36
0117	Nitrate as N	mg/l	0.386	0.316	0.216	2.04	2.43	1.39	1.1	0.945	0.953	0.356
0118	Nitrite as N	mg/l	< 0.004	< 0.004	< 0.004	0.0093	0.0085	0.0056	0.005	0.0054	0.0069	< 0.004
0119	Ammonia un-ionised as N	mg/l	< 0.00027	< 0.00021	< 0.00028	0.00019	0.00031	< 0.00024	< 0.00042	< 0.00018	0.00086	0.00049
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	88	82	90	52	43	57	61	66	86	100
0180	Orthophosphate, reactive as P	mg/l	0.064	0.02	< 0.01	0.012	< 0.01	0.021	< 0.01	< 0.01	0.021	0.018
6396	Turbidity	ntu							8.2	11	14	23
9901	Oxygen, Dissolved, % Saturation	%	70.2	77.7	86.8	90.9	95.6	100.5	107.2	106.2	96.5	70.7
9924	Oxygen, Dissolved as O2	mg/l	6.98	8.84	10.1	12.3	10.8	11.9	11.6	11.4	9.85	7.33

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sampling point Rocks Hill Bridge - Forge Str

Determinands

Sampling results

Samples from 4 Aug 2022 to 18 Jul 2024

Samples from 5 Sep 2016 to 28 Jul 2022

sampling point
Rocks Hill Bridge - Forge Str