Water Quality

Water Quality Informational Flyer

In response to various community questions and observations surrounding Newman Lake water quality this season, the NLFCZD staff developed a water quality informational flyer. Click here to view the flyer.

Water Quality Sampling Data

2023 Water Quality Data

Jacobs Engineering

Jacobs Phase 1a Report

Video Presentation of Results

Algae Bloom Videos from the EPA
Algal Blooms Can Harm Your Health (YouTube video)
You Can Prevent Nutrient Pollution (YouTube video)

Inspection Reports

2016 Inspection Report

2015 Inspection Report

2014 Inspection Report

2013 Inspection Report



Watershed Plan

Plan Implementation

Plan Outline


Comprehensive Plan for Stormwater Control

Full version (105 pages)







Thompson Creek Inventory Assessment

Thompson Creek Inventory Assessment and Geometric Stream Classification (11/2000)


Thompson Creek Watershed Analysis




Appendix A - Mass Wasting

Appendix B - Surface Erosion

Appendix C - Hydrologic Change

Appendix D - Riparian Function

Appendix E - Stream Channel

Appendix F - Fish Habitats

Appendix G - Water Quality

Appendix H - Water Supply

Public Works Watershed Analysis - Comments


Newman Lake Restoration Phase II

Full Version (289 pages)

Part 1 - Executive Summary/Introduction

Part 2 - Study Area/Information Dissemination

Part 3 - Biological Analyses/Results and Discussion

Part 4 - Appendix A Tables A-1 through A-6

Part 5 - Appendix A Tables B-1

Part 6 - Phase II Amended, 1992-1995


Survey of Newman Lake Property Owners About Lake Water Quality Issues

 The following link provides an electronic copy of a data report titled, "A Survey of Newman Lake Property Owners About Lake Water Quality Issues". The data report was collected and compiled by the Washington State University, Social & Economic Sciences Research Center. To access the report in Adobe Acrobat PDF format click here:

2007 Survey of Newman Lake Property Owners



Correspondence regarding Newman Lake blue-greens from Dr. Barry Moore (WSU)


Washington State Department of Health: Blue-Green Algae Information

Washington State Department of Ecology: Blue-Green Algae Information