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Scientific Investigations Report 2007–5178

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5178

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Table 5. Suspended-sediment load and yield, and clay-water volume and yield for the November 25–27, 1999, major turbidity event in the North Santiam River basin, Oregon.

[Little North values were estimated using discharge as a surrogate for instream turbidity. Abbreviations: ton/mi2, ton per square mile; Mgal, million gallons; Mgal/mi2, million gallons per square mile; N/A, no data available because station not yet established]

Station
name		 Suspended sediment   Clay-water
Load
(ton)		 Percentage of
annual load		 Yield
(ton/mi2)		 Volume
(Mgal)		 Percentage of
annual volume		 Yield
(Mgal/mi2)
Upper basin stations
North Santiam 22,200 85 100 8,850 100 41
Breitenbush 69,800 93 650 9,110 98 84
French N/A N/A N/A N/A N/A N/A
Blowout 6,060 81 230 1,690 92 65
Lower basin station
Little North 45,700 77 410 19,700 93 176

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