Watershed Data

Beginning in 2000, watershed data was collected and analyzed. As a result, the following collection of maps, spreadsheets, and GIS Shapefiles were created. This collection details the watershed conditions and defines a watershed plan for the urban and urban fringe portions of the Tualatin River watershed.

Note that GIS maps are only availabe to those with ArcGIS (or an equivalent) software on their computers.

• Catalog of Watershed Maps, Shapefiles, & Spreadsheets

In 2000, Clean Water Services began an extensive effort to characterize the tributaries of the Tualatin watershed. The data available in this catalog comes from these and other surveys.

• Catalog of Healthy Streams Plan Maps, Shapefiles, & Spreadsheets

The Healthy Streams Plan, developed by Clean Water Servcies in conjunction with local jurisdictions, was accepted by the Clean Water Services' Board of Directors in June, 2005. This catalog contains the supporting data.

• Metadata
  
  • HTML Metadata to accompany Watershed Data Shapefiles (ZIP, 62KB)
  • Effective Impervious Area Reduction Report (PDF, 361KB)
  • Fish Survey (1999-2001) Inside the Urban Growth Boundary (PDF, 1MB)
  • Fish Survey (1999-2001) Outside the Urban Growth Boundary (PDF, 1.4MB)
  • Healthy Streams Plan (PDF, 34MB)
  • Hydrology and Hydraulics Methodolgy (PDF, 6.1MB)
  • Macroinvertebrate report (PDF, 9.7MB)
  • Rapid Stream Assessment Methodology (PDF, 693KB)
  • 2005-2006 Assessment of Fish and Macroinvertebrate Communities of Tualatin River Basin, OR (PDF, 3 MB)

• Links to watershed data from other organizations