Scientific Investigations Report 2006–5209

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2006–5209

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Table 3. Spatial extent of extreme water-quality conditions in Upper Klamath Lake, Oregon, 2002–04.

[Abbreviations: mg/L, milligram per liter. Symbol: <, less than]

Julian
week
Spatial extent of extreme conditions
(square kilometers)
2002 2003 2004
Median dissolved oxygen <2 mg/L
29 0 0 0
30 0 0 0
31 0 22 0
32 0 0 0
33 0 0 <1
34 0 0 1
Median dissolved oxygen <4 mg/L
29 0 3 0
30 0 0 <1
31 11 39 2

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