Science and engineering professionals passionate about rivers, the outdoors, and solving problems
Each member of the Rio ASE staff brings unique experience, skills, and perspectives to the team. We have a variety of backgrounds and levels of experience and are proud to learn from and rely on one another. Collaboration is the key that allows us to maintain our dynamic and productive work environment while still fostering camaraderie and creativity.
Jeff Fealko, PE Principal Engineer
Jeff is a river engineer whose experience has been focused on water resource issues throughout the western United States and has been the engineer of record on numerous river enhancement projects.
Rob Richardson, PG, PMP Principal Geomorphologist
Rob’s career as a geomorphologist has focused on natural resource planning and management throughout the western United States and Alaska with an emphasis on river and hillslope processes.
Joe Young, PE
Principal Engineer
Joe is a civil engineer with experience in water resources engineering focused on river restoration, habitat improvement, and conveyance design throughout the western United States.
Tim Hanrahan, PhD Principal Geomorphologist
Tim is a Principal Fluvial Geomorphologist with over 26 years of experience focused on river processes and associated interactions with aquatic organisms and habitats.
Tim Sickles, PE Staff Engineer
Tim is a civil engineer with a background in water resources and land development and a focus on project management, stormwater, and site design.
Evan Miller, EIT
Staff Engineer
Evan is a civil engineer with a background in water resources and experience in environmental sampling, geotechnical engineering, and river restoration design.
Open Positions
Click below to see open positions
Mark Pacold, PE
Senior Engineer
Mark’s experience in water resources engineering and civil engineering throughout Washington and Idaho has focused on river restoration, conveyance, and site design.
Erin Murray Senior Office Manager
Erin is an office manager with experience in business administration, proposal development, program management, and technical writing and editing.
Jaime Goode, PhD Senior Geomorphologist
Jaime is a fluvial geomorphologist with diverse experience and a wide-ranging skill set suited for applications in river systems science, assessment, and restoration.
Sam Box, EIT Engineer/Geomorphologist
Sam’s project experience has focused on hydraulics, hydrology, geomorphic change, sediment transport, and analyses of altered channel behavior.
Zach Sudman, PE Staff Engineer
Zach is a river engineer with five years of experience working on river restoration and enhancement projects throughout the western United States and the Midwest.
Matt Green
Staff Biologist
Matt is a biologist with experience working on a variety of projects aimed at improving habitat for native fish and stream enhancement throughout central Idaho.