sampling point
River Monnow At Clodock Mill

Description	RIVER MONNOW AL CLODOCK MILL
Sampling point ID	MD-H0000004
Type	Freshwater – Rivers
Status	open
Location	easting northing: 332689 227434 lat lon: 51.941311, -2.980591
Area	Shropshire Herefordshire Worcestershire And Gloucestershire
Sub-Area	Shropshire & Wye
Summary	92 samples taken between 2024 and 2013

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.

12 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
pH

Displaying the twenty most recent samples. You can see all 92 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 4 Sep 2023 to 9 Aug 2024

Notation	Determinand	Units	4 Sep 2023 12:59	4 Oct 2023 07:36	9 Nov 2023 11:20	8 Dec 2023 12:49	26 Jan 2024 12:31	8 Feb 2024 11:34	7 Mar 2024 11:00	5 Jun 2024 11:14	3 Jul 2024 11:42	9 Aug 2024 10:59
0061	pH		8.27	8.06	8.22	7.99	7.85	7.62	8.23	8.37	8.28	8.18
0076	Temperature of Water	°C	15.5	12	8.9	7.8	7	6	5.7	10.3	13.4	16.1
0077	Conductivity at 25 C	μs/cm	346	297	249	189	187	136	239	354	391	383
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03		< 0.03	< 0.03	< 0.03	0.042	< 0.03	< 0.03	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	0.64		0.71	1	0.82	0.63	0.84	0.81	0.87	0.66
0117	Nitrate as N	mg/l	0.636		0.706	0.996	0.816	0.626	0.836	0.806	0.866	0.656
0118	Nitrite as N	mg/l	< 0.004		< 0.004	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004
0119	Ammonia un-ionised as N	mg/l	< 0.00082		< 0.0005	< 0.00046	< 0.00031	0.00024	< 0.0004	< 0.00056	< 0.0007	< 0.00085
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	160		110	79	72	46	100	170	190	190
0180	Orthophosphate, reactive as P	mg/l	0.039		< 0.01	0.03	0.038	0.069	0.016	0.034	0.043	0.043
9901	Oxygen, Dissolved, % Saturation	%	102.4	97.8	101.4	100.8	102.1	100.8	100.8	100.4	99.8	98.6
9924	Oxygen, Dissolved as O2	mg/l	10.2	10.5	11.7	12	12.4	12.5	12.6	11.2	10.4	9.69

Samples from 9 Dec 2022 to 4 Aug 2023

Notation	Determinand	Units	9 Dec 2022 12:54	23 Jan 2023 12:26	14 Feb 2023 10:58	3 Mar 2023 11:56	5 Apr 2023 11:42	19 Apr 2023 12:33	16 May 2023 14:37	1 Jun 2023 14:36	7 Jul 2023 13:32	4 Aug 2023 11:44
0061	pH		8.1	8.08	8.37	8.2	7.8	8.5	8.59	8.55		8.25
0076	Temperature of Water	°C	4.1	4	4.9	5	8	9.6	11.9	13		14.4
0077	Conductivity at 25 C	μs/cm	320	286	351	369	257	284	316	368		355
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	0.95	0.98	0.75	0.72	0.74	0.58	0.63	0.75	0.64	0.64
0117	Nitrate as N	mg/l	0.946	0.976	0.746	0.716	0.736	0.576	0.626	0.745	0.636	0.636
0118	Nitrite as N	mg/l	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004	0.0046	0.0043	0.0045
0119	Ammonia un-ionised as N	mg/l	< 0.00035	< 0.00035	< 0.00038	< 0.00038	< 0.0003	< 0.00053	< 0.00063	< 0.00068		< 0.00075
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	140	150	170	180	120	130	150	180	190	170
0180	Orthophosphate, reactive as P	mg/l	0.016	0.015	< 0.01	0.013	0.012	0.011	0.017	0.024	0.032	0.05
9901	Oxygen, Dissolved, % Saturation	%	102.2	101.9	103.8	102.5	101.2	106.3	110.3	105.7		101.8
9924	Oxygen, Dissolved as O2	mg/l	13.3	13.3	13.3	13.1	12	12.1	11.9	11.1		10.4

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sampling point River Monnow At Clodock Mill

Determinands

Sampling results

Samples from 4 Sep 2023 to 9 Aug 2024

Samples from 9 Dec 2022 to 4 Aug 2023

sampling point
River Monnow At Clodock Mill