Scientific Investigations Report 2007–5008

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5008

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Table 6. Fate of suspended sand and silt, and suspended clay from the major tributaries to Detroit Lake, Oregon, 2003.

[The small tributary group refers to the ungaged or distributed tributaries. Correction refers to the difference between initial and final (initial-final) suspended sediment mass in the lake water column. 1 metric ton = 1,000 kilograms]

Tributary Inflow (metric tons) Outflow (metric tons) Correction (metric tons) Deposited (metric tons) Percent trapped Percent exported
Suspended silt and clay
Box Canyon Creek 812 7 0 805 99 1
French Creek 349 1 0 348 100 0
Kinney Creek 1,040 33 0 1,007 97 3
Small tributary group 1,673 71 0 1,602 96 4
Blowout Creek 1,982 33 0 1,949 98 2
Breitenbush River 6,953 17 0 6,936 100 0
North Santiam River 7,560 3 0 7,557 100 0
Suspended clay
Box Canyon Creek 120 70 11 61 47 53
French Creek 175 86 7 96 53 47
Kinney Creek 154 123 4 35 22 78
Small tributary group 380 229 -14 137 37 63
Blowout Creek 427 255 15 187 42 58
Breitenbush River 1,073 541 57 589 52 48
North Santiam River 1,849 886 84 1,047 54 46

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