Modeling Hydrodynamics, Water Temperature, and Suspended Sediment in Detroit Lake, Oregon

Scientific Investigations Report 2007–5008

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

Table 1. Regression equations for estimating total and clay-size suspended sediment concentrations from turbidity data for the major tributaries to Detroit Lake, Oregon.

[The concentration of suspended sand and silt was determined by the difference between the estimated total and clay-size suspended-sediment concentrations. Abbreviations: SS_T, total suspended sediment, in milligrams per liter; Tb, Turbidity in FNU; SS_C, Clay-size suspended sediment, in milligrams per liter]

Tributary	Total suspended sediment	Clay-size suspended sediment
North Santiam River	SS_T = 1.98 * Tb^1.02	SS_C = 1.17 * Tb^0.55
Breitenbush River	SS_T = 2.34 * Tb^0.97	SS_C = 1.23 * Tb^0.55
French Creek	SS_T = 1.21 * Tb^0.97	SS_C = 1.23 * Tb^0.55
Blowout Creek	SS_T = 1.64 * Tb^1.08	SS_C = 2.15 * Tb^0.43

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