Relation Between Selected Water-Quality Variables, Climatic Factors, and Lake Levels in Upper Klamath and Agency Lakes, Oregon, 1990

Scientific Investigations Report 2007–5117

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5117

Figure - refer to figure caption for alternative text description

Figure 9. Relation of median June chlorophyll‑a concentration to median June lake level and cumulative degree-days from April 1 to May 15, Upper Klamath and Agency Lakes, Oregon, 1990–2006. For lake level, no significant correlation was found. For degree-days, Spearman’s ρ correlation coefficient = 0.61, p < 0.009.

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