Assessment of Summer Temperatures and Feasibility and Design of Improved Adult Chinook Salmon Thermal Refuge Habitat in the Sammamish River
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Assessment of Summer Temperatures and Feasibility and Design of Improved Adult Chinook Salmon Thermal Refuge Habitat in the Sammamish River Prepared for: Muckleshoot Indian Tribe Fisheries Division Auburn WA Prepared by: R2 Resource Consultants 15250 NE 95th St 1998 Photo by Roger Tabor, USFWS Adult Chinook Holding in Pool Near Marymoor Park Redmond WA 98052 December 30, 2010 Assessment of Summer Temperatures and Feasibility and Design of Improved Adult Chinook Salmon Thermal Refuge Habitat in the Sammamish River Prepared for: Holly Coccoli, Project Manager Muckleshoot Indian Tribe Fisheries Division Auburn WA Prepared by: Paul DeVries PhD, PE Clair Yoder PE Chiming Huang PhD, PE Glen Anderson PE Karee Oliver Mike Cooksey R2 Resource Consultants Inc. 15250 NE 95th St Redmond WA 98052 December 30, 2010 Muckleshoot Indian Tribe Fisheries Division Sammamish River Thermal Refuge Habitat CONTENTS EXECUTIVE SUMMARY ........................................................................................................ XIII 1. INTRODUCTION .....................................................................................................................1 1.1 OVERVIEW OF FLOW AND TEMPERATURE CONDITIONS AFFECTING ADULT CHINOOK SALMON IN THE SAMMAMISH RIVER ...................................................................................3 1.1.1 Review of Flow and Temperature Gage Data .........................................................3 1.1.2 Synopsis of Other Relevant Water Quality Studies ..............................................14 1.2 OVERVIEW OF THIS STUDY AND REPORT OUTLINE ............................................................18 2. TEMPERATURE ASSESSMENT METHODS......................................................................21 2.1 TEMPERATURE MEASUREMENT ..........................................................................................22 2.1.1 Calibration .............................................................................................................23 2.1.2 Grab Samples/Temperature Profiles ......................................................................24 2.1.3 Continuous Temperature Loggers .........................................................................25 2.2 LONGITUDINAL PROFILE SAMPLING ...................................................................................26 2.3 DETAILED SAMPLE SITE SELECTION ..................................................................................29 2.4 FLOW MEASUREMENT ........................................................................................................31 2.5 DETAILED SITE TEMPERATURE FIELD DATA COLLECTION .................................................32 2.5.1 Field Data Collection .............................................................................................32 2.5.2 Analysis .................................................................................................................35 3. RESULTS OF FIELD ASSESSMENTS .................................................................................38 3.1 LONGITUDINAL PROFILE ....................................................................................................40 3.2 SAMPLE SITE SELECTION....................................................................................................43 3.3 DETAILED SITE TEMPERATURE FIELDS ..............................................................................43 3.3.1 Tributary Sites .......................................................................................................46 3.3.2 Winery Pool Site ....................................................................................................47 4. RANKING/PRIORITIZATION OF SITES FOR HABITAT IMPROVEMENT PROJECTS ....................................................................................................................................55 4.1 SWAMP CREEK ...................................................................................................................55 R2 Resource Consultants, Inc. iii December 30, 2010 1819.01/Sammamish Final Report FINAL Muckleshoot Indian Tribe Fisheries Division Sammamish River Thermal Refuge Habitat 4.2 HORSE CREEK (TRIBUTARY 0068) .....................................................................................56 4.3 NORTH CREEK ....................................................................................................................56 4.4 LITTLE BEAR CREEK ..........................................................................................................57 4.5 GOLD CREEK (TRIBUTARY 0088) .......................................................................................58 4.6 WINERY POOL AT TOLT PIPELINE .......................................................................................59 4.7 DERBY CREEK AND TRIBUTARY 0090 ................................................................................60 4.8 TRIBUTARY 0091................................................................................................................60 4.9 OUTLET OF CONSTRUCTED WETLANDS AT NE 124TH ST/HOLLYWOOD PUMP STATION .....61 4.10 TRIBUTARY 0101..............................................................................................................62 4.11 TRIBUTARY 0102..............................................................................................................62 4.12 PETERS CREEK (TRIBUTARY 0104) ..................................................................................62 4.13 BEAR CREEK ....................................................................................................................63 4.14 TRIBUTARY 0142..............................................................................................................65 4.15 THE FIVE HIGHEST PRIORITY SITES WITH GREATEST POTENTIAL TO BENEFIT CHINOOK SALMON HABITAT THROUGH INCREASED THERMAL REFUGE HABITAT VOLUME ..............66 5. POSSIBLE STRUCTURAL MEASURES FOR IMPROVING THERMAL REFUGE HABITAT IN THE SAMMAMISH RIVER .................................................................................71 5.1 CONCEPTUAL DESIGNS FOR THE FIVE HIGHEST PRIORITY SITES ........................................71 5.1.1 Gold Creek .............................................................................................................74 5.1.2 Bear Creek .............................................................................................................75 5.1.3 Tributary 0091 .......................................................................................................76 5.1.4 North Creek ...........................................................................................................77 5.1.5 Little Bear Creek ...................................................................................................79 5.1.6 Permitting Requirements .......................................................................................79 5.2 FINAL DESIGN FOR THE GOLD CREEK SITE ........................................................................80 5.2.1 2-Dimensional (2-D) Modeling of Flow and Temperature ...................................80 5.2.2 Design Overview ...................................................................................................85 5.2.3 Assessment of 100-yr Flood Zero-Rise Criterion .................................................87 R2 Resource Consultants, Inc. iv December 30, 2010 1819.01/Sammamish Final Report FINAL Muckleshoot Indian Tribe Fisheries Division Sammamish River Thermal Refuge Habitat 6. POTENTIAL BENEFITS OF INCREASING TRIBUTARY SUMMER FLOWS TO IMPROVE THERMAL REFUGE HABITAT IN THE SAMMAMISH RIVER .........................90 6.1 THEORETICAL ANALYSIS ....................................................................................................90 6.2 FIELD DATA ASSESSMENT ..................................................................................................92 6.3 2-D MODELING AT GOLD CREEK SITE ...............................................................................95 7. DISCUSSIONS AND CONCLUSIONS .................................................................................99 7.1 DISCUSSION ...................................................................................................................99 7.2 CONCLUSIONS AND RECOMMENDATIONS ..........................................................103 8. REFERENCES ......................................................................................................................106 APPENDIX A: Detailed Sample Site Maps APPENDIX B: Temperature Profile Data Collected in July/August 2010 APPENDIX C: Representative Contour Maps of Water Temperature Fields for Different Depths at Sampled Sites in the Sammamish River APPENDIX D: Conceptual Design Drawings at 5 Sites APPENDIX E: CAD Design Drawings, Gold Creek Site R2 Resource Consultants, Inc. v December 30, 2010 1819.01/Sammamish Final Report FINAL Muckleshoot Indian Tribe Fisheries Division Sammamish River Thermal Refuge Habitat FIGURES Figure 1-1. Project Area (source: DeGasperi 2005a). ...............................................................2 Figure 1-2. Locations of continuous stream flow and temperature gages with data describing the summer flow and temperature regime of the Sammamish River and its largest tributaries. ..............................................................................6 Figure 1-3. Sammamish River (Station 51T) monthly