Cheryl Harrelson, PH

Principal and Managing Hydrologist

DSC_0061After graduating from the Watershed Science program at Colorado State University, Cheryl Harrelson worked with the U.S. Forest Service. During her time at the Bridger-Teton National Forest, Cheryl began in-depth study of natural channel dynamics with Luna Leopold. Dr. Leopold, the former Chief Hydrologist for the US Geologic Survey, remains a pioneer in the field of hydrology. His emphasis on data collection led Cheryl to write the paper, “Stream Channel Reference Sites: An Illustrated Guide to Field Technique.” Cheryl attended the original “Rivers and Operational Hydrology” course taught by Dr. Leopold together with David Rosgen, and she later completed all levels of Dr. Rosgen’s river courses. In 1993, Cheryl returned to her native Wyoming as a private consultant where she founded and operates Steady Stream Hydrology, Inc.


Bob McDowell

Aquatic Habitat and Fisheries Biologist


In 2008, Bob retired after 37 years in fisheries management and aquatic habitat assessment with he Wyoming Game and Fish Department.  He served as the Aquatic Habitat Program Manager from 2006-2008, the Aquatic Habitat Biologist Supervisor from 2004-2006 and the North East Wyoming Regional Fisheries Supervisor from 1987 – 2004.  Bob has completed all levels of the Wildland Hydrology, Inc short courses on Natural Channel Design and Assessment, has a MS in Zoology and Physiology from the University of Wyoming, 1973, and a BS in Biology from the University of Wyoming, 1970.  He has been a longtime member of the American Fisheries Society.  Bob spends most his days enjoying retirement with his wife Patty but occasionally we are able to convince him to spend time on the river with us to, assist with mapping, provide fisheries habitat advice or oversee construction of the occasional project.


 Shane Trotter

Construction Project ManagerSONY DSC

With experience primarily in Construction Management and Engineering , Shane’s expertise has been an asset to SSH both in the field for data collection, as well as, in the office for data analysis.  He graduated with BS in Construction Management Technology from North Carolina A&T State University in (1997) and is currently working toward a Land Surveying Certification.  Previous to working for SSH, he attended all four levels of Dave Rosgen’s, Wildland Hydrology River courses and continues use the Natural Channel Design concepts and techniques for stream restoration projects.  Over the past few years, Shane has managed large river construction projects completed at or under the estimated scheduled time and under budget.



Kristina (Tina) Krueger

Project Manager and Wetland Specialist Brown 2

While attending Sheridan High School (2004-05) and then Sheridan College (2005-07), Tina worked part-time as an Office Aide and Field Technician for Steady Stream Hydrology.  In 2009, she graduated from The University of Montana, Missoula with a BA in Organismal Biology and then returned to her hometown in 2011 to work in the environment she loves with SSH. So much so, that she finally became a full-time employee after 7 years!  In addition to  receiving a Wetland Delineation Certification from Wetland Training Institute, Inc. (2012),  she completed Dave Rosgen’s Wildland Hydrology Applied Fluvial Geomorphology (2013), River Morphology and Applications (Spring 2014),  River Assessment & Monitoring (Fall 2014) and plans to attend River Restoration & Natural Channel Design Fall 2015.  She enjoys working in the outdoors and educating people about plant and animal life, both aquatic and terrestrial.   Her growing knowledge in the Natural Channel Design Concept for restoration of rivers, Wetland Habitat Delineation and, of course, her hobby of fly-fishing will reinforce SSH’s goal to provide comprehensive management and education of rivers, wetlands, watersheds and riparian areas.