Lake OgawaraASI-40

Title : Transparency, pH, SS, DO, COD, TN and TP (1985-1986)

Classification of data : E1-E8 Typical Water Quality Parameters

File Name : asi-40-e.txt

            E. LAKE WATER QUALITY (Q)

E1 TRANSPARENCY [m]

SITE: Station 1
YEAR: 1985-1986

Month        Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
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Depth [m]
  -          3.1	-	3.5	2.8	3.9	4.3	3.8	3.3	3.3	4.0	3.5	4.3


E2 pH
Month        Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
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Depth [m]
  0.5	     7.4	-	7.6	7.6	7.6	7.6	7.7	7.8	7.8	7.6	7.5	7.5
  8.5	     7.5	-	7.6	7.6	7.6	7.5	7.7	7.6	7.8	7.6	7.5	7.5
 16.0	     7.5	-	7.6	7.5	7.5	7.4	7.2	7.1	7.0	7.2	7.6	7.5


E3 SS [mg l-1]
Month        Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
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Depth [m]
 0.5	       2	-	1	3	2	2	2	2	2	2	1	1
 8.5	       2	-	2	4	3	2	2	2	2	1	2	6
16.0	       2	-	1	3	2	1	2	1	1	<1	1	1


E4 DO [mg l-1]
Month        Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
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Depth [m]
 0.5	      13	-	13	13	10	9.8	9.0	8.5	8.3	7.9	9.7	12
 8.5	      13	-	12	12	10	9.1	8.6	7.6	7.9	8.6	9.6	12
16.0	      13	-	13	12	9.6	8.5	5.3	3.6	3.6	5.0	9.6	12


E5 COD [mg l-1]
Month        Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
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Depth [m]
 0.5	     3.1	-	3.3	3.1	2.4	2.8	2.3	2.9	2.5	2.6	2.5	2.6
 8.5	     3.3	-	3.4	3.2	2.6	3.1	2.4	2.8	3.5	2.8	2.7	2.6
16.0	     3.3	-	3.7	3.2	2.4	2.8	1.9	1.9	3.1	2.8	2.5	3.1


E6 CHLOROPHYLL CONCENTRATION [micro l-1]
Month        Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
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Depth [m]
 0.5	17.0	-	6.0	21.7	5.4	6.9	5.0	12.1	15.7	2.9	2.7	5.1
 8.5	15.0	-	6.4	19.9	4.6	3.3	4.5	9.9	12.7	2.7	2.4	4.1
16.0	15.0	-	5.9	16.7	4.3	2.0	2.0	2.6	2.0	2.1	2.3	4.2


E7 NITROGEN CONCENTRATION
Total-N [mg l-1]

Month        Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
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Depth [m]
 0.5	     0.65	-	0.93	0.81	0.65	0.60	0.58	0.52	0.41	0.67	0.51	0.67
 8.5	     0.91	-	0.91	0.82	0.71	0.62	0.59	0.57	0.54	0.62	0.53	0.66
16.0	     0.91	-	0.89	0.83	0.69	0.73	0.67	0.67	0.61	0.70	0.49	0.64


E8 PHOSPHORUS CONCENTRATION
Total-P [mg l-1]

Month        Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
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Depth [m]
 0.5	    0.029	-	0.031	0.014	0.013	0.017	0.014	0.016	0.016	0.010	0.022	0.031
 8.5	    0.028	-	0.032	0.019	0.015	0.014	0.012	0.014	0.013	0.012	0.022	0.038
16.0  	    0.034	-	0.031	0.013	0.012	0.021	0.024	0.017	0.013	0.028	0.023	0.036


E9 CHLORIDE CONCENTRATION [mg l-1]
Month        Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
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Depth [m]
 0.5	     840	-	695	693	651	640	617	491	532	640	747	768
 8.5	     840	-	721	710	642	625	607	510	543	641	746	767
16.0	     846	-	718	710	679	733	997	1,136	1,121	1,048	750	808