sampling point
Porthleven Stream U/S Wheal Fortune

Description	PORTHLEVEN STREAM AT MOUNT PASCOE UPSTREAM WHEAL FORTUNE
Sampling point ID	SW-82110180
Type	Freshwater – Rivers
Status	open
Location	easting northing: 162258 29258 lat lon: 50.115691, -5.326869
Area	Devon And Cornwall
Sub-Area	West Devon And Cornwall
Summary	19 samples taken between 2024 and 2017

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.

53 determinands have been measured at this site

Al- Filtered
Alky pH 4.5
Aluminium-Al
Ammonia(N)
B - Filtered
Ba- Filtered
Barium - Ba
Boron - as B
C - Org Filt
Ca Filtered
Cadmium - Cd
Calcium - Ca
Cd Filtered
Chloride Ion
Chromium -Cr
Cond @ 25C
Copper - Cu
Cr- Filtered
Cu Filtered
Fe- Filt
Fluoride - F
Hardness
IonicBalance
Iron - as Fe
K- Filtered
Lead - as Pb
Lithium - Li
Lithium Filt
Magnesium-Mg
Manganse-Mn
Mg Filtered
Mn- Filtered
N Oxidised
NATGRIDREF
Na- Filtered
Ni- Filtered
Nickel - Ni
Nitrite-N
Orthophospht
Pb Filtered
Potassium- K
SO4dis
SiO2 Rv
Sld Sus@105C
Sodium - Na
Strontium-Sr
StrontumFilt
Sulphate SO4
Temp Water
Zinc - as Zn
Zn- Filtered
pH
pH in-situ

Samples from 27 Mar 2018 to 2 Apr 2024

Notation	Determinand	Units	27 Mar 2018 13:20	18 Apr 2018 13:35	24 May 2018 14:00	20 Dec 2023 13:05	10 Jan 2024 11:44	25 Jan 2024 13:27	8 Feb 2024 10:45	15 Feb 2024 11:54	13 Mar 2024 11:50	2 Apr 2024 11:58
0050	Lead	μg/l	< 2	< 2	< 2
0052	Lead, Dissolved	μg/l	0.624	0.69	0.517	0.3	0.36	0.31	0.45	0.31	0.45	0.47
0061	pH		6.33	6.2	6.3	5.99	5.87	5.9	5.97	6.11	6.11	6.16
0076	Temperature of Water	°C	12.7	14.2	14.3
0077	Conductivity at 25 C	μs/cm	269	275	274
0106	Cadmium, Dissolved	μg/l	1.9	2.18	2.39	1.8	1.9	1.9	1.9	1.8	1.8	1.8
0108	Cadmium	μg/l	1.96	2.14	2.43
0111	Ammoniacal Nitrogen as N	mg/l	< 0.03	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	5.75	6.07	5.56
0118	Nitrite as N	mg/l	< 0.004	< 0.004	< 0.004
0135	Solids, Suspended at 105 C	mg/l	< 3	< 3	3.13
0158	Hardness, Total as CaCO3	mg/l	63.3	64.5	62
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	12	11	10
0172	Chloride	mg/l	36.9	38.9	39.4
0177	Fluoride	mg/l	0.09	0.098	0.09
0180	Orthophosphate, reactive as P	mg/l	< 0.01	< 0.01	0.011
0182	Silica, reactive as SiO2	mg/l	6.18	6.51	7.54
0183	Sulphate as SO4	mg/l	27.8	29.5	32.9
0205	Sodium, Dissolved	mg/l	22.4	22.1	21.2
0207	Sodium	mg/l	21.9	21.2	21.5
0209	Potassium, Dissolved	mg/l	3.38	3.41	3.49
0211	Potassium	mg/l	3.3	3.41	3.59
0235	Magnesium, Dissolved	mg/l	6.27	6.69	7	5.7	5.9	5.9	5.8	5.9	5.7	5.6
0237	Magnesium	mg/l	6.15	6.58	7.21
0239	Calcium, Dissolved	mg/l	15	14.8	13.3	13	13	13	13	13	14	14
0241	Calcium	mg/l	14.6	14.4	13.7
0301	Carbon, Organic, Dissolved as C :- {DOC}	mg/l	0.91	0.81	0.84	1	0.92	0.72	0.98	0.84	1	0.86
3164	Chromium	μg/l	< 0.5	< 0.5	< 0.5
3169	pH : In Situ		5.7	5.9	6.1
3408	Zinc, Dissolved	μg/l	641	721	851	640	640	710	700	650	640	660
3409	Chromium, Dissolved	μg/l	< 0.5	< 0.5	< 0.5	< 0.5	< 0.5	< 0.5	< 0.5	< 0.5	< 0.5	< 0.5
3410	Nickel, Dissolved	μg/l	28	33.1	40.9	28	28	31	31	30	27	27
4201	Lithium, Dissolved	μg/l	< 100	< 100	< 100
6037	Aluminium, Dissolved	μg/l	52.1	50	46.6	38	43	38	43	37	45	44
6050	Manganese	μg/l	35.4	41.8	56.2
6051	Iron	μg/l	131	121	290
6057	Aluminium	μg/l	66.4	55.4	94.6
6059	Boron	μg/l	< 100	< 100	< 100
6062	Barium	μg/l	12.3	13.5	15.2
6063	Strontium	μg/l	78.6	79.8	80.1
6064	Lithium	μg/l	< 100	< 100	< 100
6450	Copper, Dissolved	μg/l	41.6	43.8	41.4	36	36	38	45	39	39	39
6452	Copper	μg/l	43.5	43.7	43.2
6455	Zinc	μg/l	648	758	837
6458	Manganese, Dissolved	μg/l	37.1	41	54.4
6460	Iron, Dissolved	μg/l	51.7	68	123
6462	Nickel	μg/l	28.7	33.3	39.1
6693	Strontium, Filtered	μg/l	80.5	80.3	78.4
7044	Ionic Balance	%	0.0538	-2.04	-1.88
7434	National Grid Reference : Whole : Field report					1
7859	Sulphate, Dissolved as SO4	mg/l	28.6	29.8	31.9
9446	Barium, Dissolved	μg/l	12.8	13.6	14.6
9447	Boron, Dissolved	μg/l	< 100	< 100	< 100

Samples from 20 Jun 2017 to 15 Feb 2018

Notation	Determinand	Units	20 Jun 2017 15:05	24 Jul 2017 14:45	15 Aug 2017 14:55	21 Sep 2017 15:20	19 Oct 2017 14:50	14 Nov 2017 15:10	14 Dec 2017 13:45	9 Jan 2018 13:50	15 Feb 2018 13:10
0050	Lead	μg/l	4.24	< 2	3.81	2.22	2.45	< 2	< 2	< 2	< 2
0052	Lead, Dissolved	μg/l	0.425	0.364	0.469	0.398	0.339	0.347	0.299	0.51	0.611
0061	pH		6.12	6.17	6.26	6.33	6.28	6.16	6.23	6.26	6.17
0076	Temperature of Water	°C	16.8	16.3	15.4	14.2	13.4	12.1	10.1		11.4
0077	Conductivity at 25 C	μs/cm	272	188	265	265	266	267	265		274
0106	Cadmium, Dissolved	μg/l	2.23	2.08	2.03	1.93	2.09	2.13	1.92	2.01	2.02
0108	Cadmium	μg/l	2.38	2.14	2.16	2.08	2.25	2.17	1.99	2.03	1.96
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
0116	Nitrogen, Total Oxidised as N	mg/l	4.08	3.6	3.68	4.05	4.34	4.54	4.8	4.96	5.84
0118	Nitrite as N	mg/l	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004	< 0.004
0135	Solids, Suspended at 105 C	mg/l	4.67	< 3	11.9	6.47	7.13	< 3	< 3	4.4	< 3
0158	Hardness, Total as CaCO3	mg/l	61.1	59.1	59.7	59.7	63.3	60.1	60.8	61	63
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	10	11	11	8	10	11	12	12	13
0172	Chloride	mg/l	38.6	37.7	37.2	36	37	37.8	36.8	39.2	39
0177	Fluoride	mg/l	0.101	0.086	0.087	0.087	0.096	0.08	0.089	0.085	0.087
0180	Orthophosphate, reactive as P	mg/l	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01
0182	Silica, reactive as SiO2	mg/l	7.79	7.33	7.58	7.81	7.65	7.89	7.39	7.24	6.68
0183	Sulphate as SO4	mg/l	35	34.1	33.1	32.3	31.6	32.8	31.3	30.4	28.6
0205	Sodium, Dissolved	mg/l	21.1	20.8	20.5	20.1	21.8	21.5	21.2	21.2	21.4
0207	Sodium	mg/l	21	20.9	20.3	20.7	22.1	21.1	21.4	21.6	22.1
0209	Potassium, Dissolved	mg/l	3.71	3.75	3.72	3.64	3.72	3.37	3.43	3.39	3.48
0211	Potassium	mg/l	3.62	3.73	3.82	3.63	3.63	3.44	3.41	3.48	3.52
0235	Magnesium, Dissolved	mg/l	7.2	6.96	7.05	6.85	7.18	6.84	6.7	6.33	6.39
0237	Magnesium	mg/l	7.27	7.02	7.04	6.88	6.97	6.92	6.73	6.6	6.44
0239	Calcium, Dissolved	mg/l	12.6	12.2	12.3	12.6	13.5	12.8	13.3	14	14.7
0241	Calcium	mg/l	12.5	12.3	12.2	12.7	12.3	12.5	13.3	14.2	15.2
0301	Carbon, Organic, Dissolved as C :- {DOC}	mg/l	0.73	0.77	0.96	0.98	0.91	0.61	0.89	1.11	0.96
3164	Chromium	μg/l	< 0.5	< 0.5	< 0.5	< 0.5	< 0.5	< 0.5	< 0.5	< 0.5	< 0.5
3169	pH : In Situ		6.1	6.1	6.1	6.2	6.1	6	6.2		5.7
3408	Zinc, Dissolved	μg/l	902	857	847	825	765	846	767	687	663
3409	Chromium, Dissolved	μg/l	< 0.5	< 0.5	< 0.5	< 0.5	< 0.5	< 0.5	< 0.5	< 0.5	< 0.5
3410	Nickel, Dissolved	μg/l	45.2	44	42.3	36.4	36.9	37.6	33.3	31.3	29.8
4201	Lithium, Dissolved	μg/l	< 100	< 100	< 100	< 100	< 100	< 100	< 100	< 100	< 100
6037	Aluminium, Dissolved	μg/l	35	41.7	31.8	34.5	35.1	35.8	37.1	52.2	50.5
6050	Manganese	μg/l	81.1	69.7	73.8	55.2	47.4	46.9	40.7	42.5	37.1
6051	Iron	μg/l	711	202	706	428	465	180	443	144	109
6057	Aluminium	μg/l	219	51.1	202	129	114	46.1	55.9	71	65.7
6059	Boron	μg/l	< 100	< 100	< 100	< 100	< 100	< 100	< 100	< 100	< 100
6062	Barium	μg/l	15	13.9	14.2	13.2	13.4	13.5	12.7	13.3	12.9
6063	Strontium	μg/l	73	70.7	70.5	72	72.1	73	73	78.2	80.3
6064	Lithium	μg/l	< 100	< 100	< 100	< 100	< 100	< 100	< 100	< 100	< 100
6450	Copper, Dissolved	μg/l	27.9	34.8	25.9	29.9	33.8	33	31.2	37.9	41.3
6452	Copper	μg/l	45.8	35.2	45.4	39.3	37.4	34.1	32.5	37.8	40.1
6455	Zinc	μg/l	910	859	848	788	820	835	750	701	684
6458	Manganese, Dissolved	μg/l	76.1	68.3	72	53.2	50.4	46.9	40.5	38.6	37.9
6460	Iron, Dissolved	μg/l	144	92.9	157	127	79.4	84.4	96	49.4	51.2
6462	Nickel	μg/l	46.3	43.5	42.3	38.7	35	38.9	33	29.6	28.1
6693	Strontium, Filtered	μg/l	72.8	70.2	71.2	71	74.5	72.3	73	75.2	80.1
7044	Ionic Balance	%	-1.75	-1.2	-1.17	1.32	0.699	-2.07	-0.794	-1.12	-0.673
7859	Sulphate, Dissolved as SO4	mg/l	35.4	33.6	33.3	32	33.1	32.5	31.2	29.3	28.8
9446	Barium, Dissolved	μg/l	14.5	14.1	13.6	13.6	14.7	13.4	12.7	12.6	13
9447	Boron, Dissolved	μg/l	< 100	< 100	< 100	< 100	< 100	< 100	< 100	< 100	< 100

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sampling point Porthleven Stream U/S Wheal Fortune

Determinands

Sampling results

Samples from 27 Mar 2018 to 2 Apr 2024

Samples from 20 Jun 2017 to 15 Feb 2018

sampling point
Porthleven Stream U/S Wheal Fortune