Project Experience Stream Channel Dynamics and Stability Channel Migration Hazard Mapping: Hoh, Green, Snoqualmie, Raging and Tolt Rivers, WA. Conducted channel migration studies for 37 miles of river. Used aerial photograph and historic maps, field observations, and analytical methods to compile maps showing historic channel positions, calculate historic migration rates, identify potential avulsion channels, analyze causes of migration rate changes, and develop channel migration hazard maps. Streambank Slumping Evaluation, Novelty Bridge, Snoqualmie River: Taylor Associates for King County. Investigated riverbank slumps that developed during bridge construction. Evaluated mode of failure and investigated past history of slumping and bank protection. Calculated changes in suspended sediment load resulting from introduction of failure block into the river. Worked with biologists and engineers to evaluate proposed repair strategies based upon potential impacts to bridge pilings and fish habitat. Taylor Creek culvert replacements, City of Seattle. Diagnosed cause of sediment deposits that were burying weirs constructed in conjunction with culvert replacements for fish access. Recommended actions to prevent further headcutting and downstream sedimentation problems. Stream Channel Restoration Tolt River Floodplain Reconnection: Parametrix, for City of Seattle. Provided morphology and sedimentation components of feasibility analysis for setting back levees from the lower Tolt River near Carnation, Wa. Characterized channel morphology in leveed and unconstrained river reaches. Sampled sediment for assessment of spawning gravel suitability and sediment transport analysis. Predicted future sediment deposition rates, with and without levees, based upon watershed sediment supply, deposition history, and transport modeling. Predicted future channel patterns, channel migration rates, and sediment deposition rates for various project configurations. Green/Duwamish RiverBasin Ecosystem Restoration: US Army Corps of Engineers. Provided geomorphological feasibility analysis of 15 potential restoration projects on the Green River and tributary channels, including levee removals, side channel development, gravel placement and LWD placement. Evaluated how channel migration, erosion, and sediment deposition could affect project success, longevity and maintenance needs. Thornton Creek Restoration: Entranco, for City of Seattle. Provided geomorphology and sediment transport expertise in multi-disciplinary team designing channel restoration, habitat, and detention projects in a heavily-urbanized watershed. Cedar River Spawning Gravel Study: Jones & Stokes for US Army Corps of Engineers. Technical lead for study evaluating spawning gravel in the Cedar River. Designed field sampling program using standard collection protocols and mapped sediment sources, prepared sediment budget to quantify sediment sources, used HEC-RAS hydraulic model output to calculate scour and sediment transport and evaluated how natural morphology, human hydrologic modifications (e.g., Landsberg Diversion, flood control, levees), and sediment supply affect distribution of spawning gravel. Erosion and Sedimentation Ravine Stability Evaluations, Lake Stevens and Marshland Drainage Areas, WA: R.W. Beck and Snohomish County. Analyzed impacts of development on ravine stability on small urbanizing watersheds in Snohomish County. Conducted geomorphic surveys and identified feasibility and need for instream stabilization projects and habitat improvement projects. Garrison and Mill Creek Erosion and Sedimentation Evaluation: City of Kent Public Works. Conducted geomorphic evaluation of stream-related erosion and sedimentation processes and problems in ravines and creeks affected by increased flows from urban development. Determined the locations and causes of erosion and sediment deposition problems, evaluated previously-proposed and applied solutions, and recommended approaches for dealing with problems. Geomorphic Evaluation of Gravel Placement: Green River, WA: US Army Corps of Engineers. Evaluated armoring, channel degradation, and morphologic changes that resulted from sediment trapping by Howard Hansen Dam. Prepared pre- and post-dam sediment budgets, estimated gravel transport rates, recommended rates of gravel placement, and described potential project impacts and effects on morphology and habitat. Sediment Trapping, Flood Control and Restoration of a Dredged Channel: Hansen Creek, Skagit County, Washington. Determined magnitude and frequency of anticipated sediment deposition using dredging records, profile surveys, and landslide inventories. Analyzed feasibility of depositing sediment using alluvial fans, grade control structures, or sediment ponds. Calculated sediment transport capacity and evaluated alternative stream configurations such as excavated floodplain benches, setback levees, and restoring meander bends and LWD to channelized stream reaches. Alluvial fan sedimentation and flooding: Burns Creek, King County, Washington. Estimated magnitude and frequency of sediment delivery from landslides and channel incision. Assessed downstream channel changes in bed material, depth of sediment infill, and gradient. Evaluated feasibility of possible solutions to flooding such as landslide control, sediment detention basin, dredging, raising driveway bridges, and no action. Landslide and Channel Response Inventory, Stillaguamish Watershed, WA: Stillaguamish Tribe, Tulalip Tribes, and Snohomish County. Conducted an extensive landslide inventory based on aerial photographs and assembled a master landslide inventory of 1,080 landslides covering the entire Stillaguamish basin. Estimated the timing and volume of landslide sediment delivered to channels. Used successive aerial photographs to inventory widening and narrowing of channels with anadromous fish use. Related channel response to riparian harvest and landslide delivery (co-authored with Brian Collins). Landslide and Channel Response Inventories: Sealaska Corporation. Used aerial photographs to develop landslide inventories for 12 watersheds in SE Alaska. Determined rates of landsliding and delivery to streams for various land uses. Related channel response to sediment sources and flood history. Watershed Analysis City of Seattle Urban Streams channel assessment: Earth Systems for City of Seattle. Assessed erosion, channel stability, and geomorphological conditions of Taylor and Pipers Creeks. Worked in multi-disciplinary team to assess causes of drainage and habitat problems, develop restoration strategies and prioritize solutions. Sekiu River Watershed Analysis channel assessment: Crown Pacific. Used field data and historic photographs to analyze channel response to riparian timber harvest, removal of large woody debris, and sediment inputs from landslides and road surface erosion. Worked with interdisciplinary team to link management-related hazards to resource vulnerabilities and prepare rule calls for management prescriptions. Upper Little Klickitat River Watershed Analysis channel assessment: Boise Cascade. Used field data and historic photographs to analyze channel response to riparian timber harvest, removal of large woody debris, and sediment inputs from landslides and road surface erosion. Evaluated channel incision causes and estimated rate of sediment production. Worked with interdisciplinary team to link management-related hazards to resource vulnerabilities and prepare rule calls for management prescriptions.