Table 1. Summary of samples or data collected for analyses of cyanotoxin occurrence and other water quality parameters, Upper Klamath Lake, Oregon, 2007–09.


[Locations of sample sites are shown in figure 1. Samples for nutrient (total and dissolved) and chlorophyll a analyses and continuous monitoring data collected on the same days as cyanotoxin samples are included. Continuous monitoring data were collected hourly and reported as daily median values on toxin sample dates. Water samples collected in 2007 do not include chlorophyll a. Water samples were not analyzed for dissolved toxins in 2007. Italicized numbers are depth-integrated samples. All other samples or data were collected at discrete depths. Cyanotoxin samples were collected by depth integration (June 16–August 3) and as point samples (August 10–September 14) in 2009 only. Symbol: –, no data]


Sample site	Median depth (meters)	2007					2008
		Cell associated toxins	Dissolved toxins	Total nutrients	Dissolved nutrients	Continuous monitors	Cell associated toxins	Dissolved toxins	Total nutrients chlorophyll a	Dissolved nutrients	Continuous monitors
MDN	3.4	4	–	4	4	–	7	7	7	7	–
MDN Upper	0.85	–	–	–	–	4	–	–	–	–	7
MDN Lower	2.5	–	–	–	–	4	–	–	–	–	7
WMR	1.3	4	–	4	4	4	7	7	7	7	7
EPT	11.1	4	–	4	–	–	–	–	7	–	–
EPT Upper	2.7	–	–	–	4	4	–	–	–	7	7
EPT Lower	8.1	–	–	–	4	4	–	–	–	7	7
MDT	13.6	4	–	4	–	–	–	–	7	–	–
MDT Upper	3.2	–	–	–	4	4	–	–	–	7	7
MDT Lower	9.7	–	–	–	4	4	–	–	–	7	7
MDL	3.5	–	–	–	–	–	7	7	–	–	–
RPT	2.5	4	–	4	4	4	–	–	–	–	7
NBI	2.0	–	–	–	–	4	7	7	–	–	7
HDB	1.3	4	–	4	4	4	–	–	–	–	7

Sample site	Median depth (meters)	2009
		Cell associated toxins	Dissolved toxins	Total nutrients chlorophyll a	Dissolved nutrients	Particulate, carbon/nitrogen/phosphorus	Continuous monitors
MDN	3.4	14	14	14	14	12	–
MDN Upper	0.85	–	–	–	–	–	14
MDN Lower	2.5	–	–	–	–	–	14
WMR	1.3	14	14	14	14	12	14
EPT	11.1	8	8	14	–	–	–
EPT Upper	2.7	6	6	–	14	12	–
EPT Lower	8.1	6	6	–	14	12	14
MDT	13.6	8	8	14	–	–	–
MDT Upper	3.2	6	6	–	14	12	14
MDT Lower	9.7	6	6	–	14	12	14
MDL	3.5	–	–	–	–	–	–
RPT	2.5	14	14	14	14	12	14
NBI	2.0	–	–	–	–	–	14
HDB	1.3	–	–	–	–	–	–

First posted May 30, 2012