Data Analysis

Many local, state and federal agencies have been collecting data in the Lower Willamette and Columbia Rivers.  This report summarizes data used in the modeling effort. Information provided in this analysis was organized in the following sections:

    · Columbia and Willamette River Water Quality Data
    · Columbia and Willamette River Flow and Water Level Data
    · Meteorological Data
    · Model Geometry for the Columbia and Willamette Rivers
    · Point Source Flow and Water Quality Data
    · Tributary Inflow and Water Quality Data
 

Conceptually the model elements,
shown in Figure 1, are:

    · Willamette River above
    the Oregon City Falls

    · Willamette River below
    the Oregon City Falls

    · Columbia River with
    side channels

    · Multnomah Channel

    · Lower Clackamas River
    and adjacent gravel pit
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Figure 1.  Conceptual Layout of the Lower Willamette River System Model (Points Represent Model Segments)