SCIENCE TEAM
Jean Unmuth (Chair)
Water Resources Specialist | WDNR Retired
Dave W. Marshall
Aquatic Ecologist | Underwater Habitat Investigations LLC | WDNR Retired
Ken Wade
Civil Environmental Engineer | Hydrogeologist | WDNR Retired
Ken Wade is a member of the FLOW Science Committee. He worked as a Wisconsin DNR and DOT civil
environmental engineer and hydrogeologist until retirement. Areas of expertise include geology,
hydrogeology, soil and groundwater contamination investigation and remediation, and wetland
hydrology. He partnered with Dave Marshall and Jean Unmuth in conducting and publishing the results
of a study of nitrate impacts to oxbow lakes in the Wisconsin Riverway. He lives near Blue Mounds with
Pat Trochlell where they are stewards for The Prairie Enthusiast’s efforts restoring over 300 acres of
prairie, savanna, oak woodland and wetland communities.
Michael Mossman
Ecologist | WDNR Retired
John Lyons
Curator of Fishes | University of Wisconsin Zoological Museum, Madison | WDNR Retired
Ron Grasshoff
Environmental Analysis and Review Specialist (EA) WDNR retired
My career at DNR began in 1989, and I held four positions with the agency until I retired in 2010. Before joining DNR, I acquired a B.S. Degree in Education from Butler University and worked in Parks and Recreation, Child Welfare, and Education. I changed my career path to Natural Resources when as an adult learner I completed an Undergraduate program (a certificate/second major) at the Nelson Institute for Environmental Studies at UW Madison I went on to complete additional post graduate coursework in the Natural Resource field. I also completed a certificate program in Public Administration and UW Milwaukee. In addition I am a member on the State Land and Water Conservation Board (LWCB) and active with Wisconsin's Green Fire Voices for Conservation.
My areas of Expertise are as follows:
Wetland Ecology, Wetland Mitigation, and Waterway Permitting,
Drinking and groundwater,
Endangered Resources regulatory compliance,
Environmental Impact Analysis,
Water quality and Land and Water Conservation.
Susan Marcquenski
Fish Health Specialist | WDNR Retired
While an undergrad at the University of Illinois-Urbana, Sue discovered the fascinating ecology of parasites.
She pursued this learning adventure at UW-Stevens Point where she studied the Wisconsin distribution and
prevalence of a parasite of ruffed grouse which was partially funded by the WI DNR. Opportunities to work
with the fish and wildlife health specialists at DNR opened up, and several years later, Sue was offered the fish health specialist position in Fisheries Management. This was a dream job where she learned a “metric ton” from colleagues in Wisconsin, the USA and beyond, and was able to contribute new knowledge to the field of aquatic animal health before retiring after 30+ years of service. In retirement, Sue still holds service as a high priority and continues to assist fish farmers with health inspections, improving rearing conditions that promote fish health and finding solutions to fish farming challenges. She is honored to be part of FLOW’s Science Team, which keeps her in contact with the Riverway, its people and challenges, and offers the chance to influence the River’s future through science.
Pat Trochlell
Ecologist | WDNR Retired
Pat Trochlell is an ecologist working in wetland, prairie and oak ecosystems. She retired
from WDNR after 35+ years working on wetland regulation, restoration, monitoring and
training issues. She currently does plant community inventories and assessments, teaches
natural resource courses and is on the local chapter board of The Prairie Enthusiasts. She
is a state licensed hydrologist and soil scientist.
FLOW Dark and Starry Skies Crew
John Heasley
Astronomy Educator Driftless Stargazing LLC
NASA Solar System Ambassador
IAU Dark Sky Ambassador
International Dark-Sky Association Advocate
Sue Dvorak
Iowa County Astronomers
Alayne Hendrcks
Iowa County Astronomers