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Thurston County Lakes

Lake Lawrence Grass Carp Study, 1990

To view the following report, you will need to have Adobe Acrobat loaded on your computer. (Note: On some computer monitors, the text in the following PDFs might appear jagged, however, the pages should print clearly.) 

Feasibility of Aquatic Plant Control in Lake Lawrence, Thurston County, Washington Using Triploid Grass Carp, 1990

This report examines the pros and cons of using Grass Carp as the primary aquatic plant control method. The report is based on the aquatic plant masses present in summer of 1989. To reduce the time it takes for viewers to download and view this report, we have broken the report into two, smaller PDFs.

grass carpSection 1 includes the following:

  • Executive Summary
  • Project Summary/Major Findings
  • Chapter 1: Baseline Water Quality and the Effects of Aquatic Macrophytes on Lake Lawrence
  • Chapter 2: Population and Community Structure of Lawrence Lake Fishes
  • Chapter 3: Results of a Creel Survey of the Lake Lawrence Lake Fishery
  • Chapter 4: Aquatic Macrophytes in Lawrence Lake and the Efficacy of Stocking Sterile Triploid Grass Carp

Section 2 includes the following:

  • Literature Cited
  • Tables 1 through 14 regarding Lake Lawrence temperature, dissolved oxygen, phosphorus, largemouth bass populations, and harvesting efforts.
  • Figures 1 through 27 regarding temperature, conductivity, pH levels, dissolved oxygen concentrations, phosphorus, chlorophyll, biomass and fish histograms.

Contact Us

 Staff contact: Janie Civille (360) 754-4681. E-mail: civillj@co.thurston.wa.us

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