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Scientific Investigations Report 2010–5038

Suspended-Sediment Budget for the North Santiam River Basin, Oregon, Water Years 2005–08

Table 6.Sediment trap efficiency values for Detroit Lake and Big Cliff Reservoir, North Santiam River basin, Oregon, water years 2005–08.

  Water year Total 2005–08
2005 2006 2007 2008
Input to Detroit Lake (tons) 7,360 86,600 118,920 25,000 237,880
Output from Big Cliff Reservoir (tons) 970 11,800 13,800 7,830 34,400
Reservoir trap efficiency (percent) 87 86 88 69 86

For additional information contact:
Oregon Water Science Center Director,
U.S. Geological Survey,
2130 SW 5th Avenue
Portland, Oregon 97201
http://or.water.usgs.gov

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