Newaukum Creek Basin Characterization Project Report
July 2007
About this Report
Newaukum Creek plays a vital role in supporting the productivity of threatened fish species and also supports biological production in the Green River by contributing water, sediments, organic matter, food energy, and nutrients. In addition to its ecological value, the Newaukum Creek basin supports important rural and urban economies and communities that rely on agriculture and forestry. Sustaining and improving the biological productivity of the Newaukum Creek basin in this growing community requires an understanding of the basin as a system.
This technical report characterizes historic and present conditions, identifies ecological alterations and knowledge gaps, and anticipates future changes in the Newaukum Creek basin. The report is intended as a reference document to inform basin management objectives and the planning and implementation of fish and wildlife habitat restoration projects by landowners, private sector organizations, nonprofits, and agencies, within the context of regional plans for habitat restoration as well as salmon recovery.
Authors: Latterell, J; J. Vanderhoof, J. Burkey, J. Bethel, K. Johnson (King County, DNRP, Water and Land Resources Division)
Pages: 222
Funding: King Conservation District, WRIA 9 Forum of Local Governments, US Army Corps of Engineers, King County
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Due to the size of the report, it has been broken down by section for faster downloading.
Cover, Table of Contents, and Executive Summary (1 MB)
Chapters 1 - 3 (141 KB)
Chapters 4 -7 (2.2 MB)
Chapters 8 - 10 (258 KB)
References and Appendix A - Hydrology (127 KB)
Appendix B - Historical Photo Comparisons (4.1 MB)
Appendix C - Water Quality Monitoring (57 KB)
Appendix D - Landcover for Wildlife and Forest Characterization (56 KB)
Appendix E - Wildlife Lists (82 KB)
Appendix F - Final Preliminary Assessment Screening for Newaukum Creek Habitat Restoration (1.2 MB)
List of Figures (Additional figures are located in main document)
Figure 1. Map of Newaukum Creek basin
Figure 2. Stream courses and sub-watersheds
Figure 5. Map of average annual precipitation
Figure 6. Map of basin geology
Figure 7. Map of glacially sculpted bedrock knobs near Boise Ridge
Figure 8. Map of drumlins on Plateau
Figure 9. Map of basin topography
Figure 10. Map of alluvial fan on the North Fork of Newaukum Creek
Figure 11. Map of landslide topography in the Ravine
Figure 12. Map of land use designations
Figure 23. Map of current wetlands
Figure 24. Map of historic wetlands indicated by General Land Office maps
Figure 26. Map of impervious surfaces
Figure 28. Map of change in 10-year flood frequency in current and ‘future’ landcover scenarios
Figure 30. Map of difference between current and historic high pulse range
Figure 31. Map of water quality sampling stations
Figure 37. Map of special status lands
Figure 41. Map of biotic integrity scores at sampling stations
Figure 42. Map of probability of fish presence in streams of the Upper Basin
Figure 44. Map of forest types
Figure A1. Map of surficial geology for hydrological analyses
Figure A2. Map of slope distributions
Figure A3. Map of ‘current’ and ‘future’ landcover.
Figure D1. Map of landcover for wildlife and forest characterizations.
