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Thurston County, Washington

The content on the Thurston County website is currently provided in English. We are providing the “Translation” for approximately 10 languages. The goal of the translation is to provide visitors with limited English proficiency to access information on the website in other languages. The translations do not translate all types of documents, and it may not give you an exact translation all the time. The translations are made through an automated process, which may not result in accurate or precise translations, particularly of technical and legal terminology.

Community Planning and Economic Development

Green Cove Creek Drainage Basin Plan

Green Cove Creek Comprehensive Drainage Basin Plan, December 1998, adopted by the City of Olympia and Thurston County

Note: The basin plan on this Web page has been divided into several PDFs to make it easier for viewers to find information.  

Although the PDFs are generally about 25-35 pages long, they still take time to load because the PDFs were created by scanning a paper-version of the document (as opposed to simply converting a Word document to a PDF).



Instead of waiting to view the files through this web site, a better choice is to right-click the underlined hyperlink and then "save target" (ie., save the file) to your own computer and open it from there. Use the magnifying glass in Adobe to zoom in.





Section 1 (PDF)

  • Resolution 11869
  • Determination of Non-significance
  • Executive Summary
  • Vicinity Map
  • Acknowledgements
  • Table of Contents
  • Chapter 1 Introduction
  • Chapter 2 Basin Characterization

Section 2 (PDF)

  • Chapter 3 Hydrology
  • Chapter 4 Water Quality

Section 3: Chapter 5 Fish Habitat (PDF)



Section 4 (PDF)

  • Chapter 6 Problem Identification and Prioritization
  • Chapter 7 Analysis of Alternatives to Reduce Future Peak Flows in Green Cove Creek
  • Chapter 8 Recommended Plan
  • Chapter 9 Recommended Plan Implementation
  • References

Section 5 - PDF Maps

Section 6 (PDF) 

  • Appendix A: Regulatory Authority for Basin Plan Measures
  • Appendix B: Regional Nonstructural Management Program
  • Appendix C: Soils Description
  • Appendix D: Green Cove Basin Wildlife
  • Appendix C: Habitat Survey Data