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Timm Zumm is a resident of the Town of Spring Green, Wisconsin. He works to protect the river from degradation by pollutants and development. His goal is to preserve this treasure for future generations. Timm is a tireless advocate for the river’s health. He works with local and state elected officials to help them understand the river’s value. He helps to train and lead citizen efforts to monitor the quality of the water in the Lower Wisconsin Riverway. 

“One of the best things about summer on this river,” said Timm Zumm, “is how you can paddle out and camp on a sandbar. You don’t need a reservation and when conditions are right you don’t even need a tent. There are many places where don’t hear traffic and you can’t see any houses or buildings. Just trees, bluffs, sandbars, and flowing water. It’s a peaceful place to recharge.”


VICE PRESIDENT - Dave W. Marshall

Dave worked for WDNR from 1976 to 2006.  During his early years at WDNR, Dave investigated water pollution of the Wisconsin River before the implementation of the Clean Water Act.  Most of the river was extremely polluted.  Describing the river condition at that time as “dystopian” is not an exaggeration.  Impoundments from Rhinelander to Nekoosa appeared to boil from the release of hydrogen sulfide and methane gases.  Flowing parts of the river were choked with filamentous bacteria and fungi, collectively known as “slime growths”, which thrived in the nutrient soup.  Many sections of the river were fishless.  The Lower Wisconsin River was spared the worst of the pollution, in part due to the relatively remote distance from pulp and paper mill sources and also the existence of numerous connected oxbow lakes.  The groundwater fed oxbows served as refuges during severe periods of water pollution while the massive Driftless Area aquifer diluted some of the pollution.  Nonetheless, few people consumed fish in the Lower Wisconsin River given the sulfide – “rotten egg” odors permeated the flesh.  All that eventually changed for the better after full implementation of the Clean Water Act in the early 1980s. 


Dave started studying the oxbows along the Lower Wisconsin State Riverway by the late 1990’s.   In general WDNR did not support this effort even though most of the floodplain lakes had never been studied.  When Dave retired from WDNR in 2006, he was able to study oxbow lakes in much greater detail, thanks to the support of FLOW, River Alliance, State Riverway county governments and WDNR Lakes and Rivers Planning Grant Programs.  In 2009 Dave and Timm Zumm began working together to establish FLOW as a 501c3 nonprofit conservation organization.  Dave served as a board member until 2016 but remained on the Science Committee and continued oxbow lakes studies. 


When Dave first started studying the oxbows lakes (1998-2004) most were in near pristine condition.  Most oxbow lakes are now highly degraded due to groundwater nitrate contamination across the sand terrace.   Ironically, the problem continues to degrade this important water resources feature which likely sustained much of the Lower Wisconsin River biodiversity before implementation of the Clean Water Act.

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TREASURER - Patrick Michaels 

Patrick Michaels moved to Wyoming township from Los Angeles in 2014, and in so doing traded the ocean for the river. An avid birdwatcher, paddler, and overall nature enthusiast, Patrick has spent countless hours paddling the river and walking the forests and sloughs in all seasons and conditions. From the floodplain forest during spring melt to the vast sandbars amidst a dry summer’s trickle, from an easy afternoon “bridge to bridge” (14 to 23) with the dogs to a three-day solo journey to the Mississippi, the river never shows the same face twice. Patrick has become an enthusiastic evangelist for the Lower Wisconsin River, bringing all manner of friends and visitors on river journeys great and small, and covering logistics for many more.


During his time in Wisconsin, Patrick has worked in finance and business development capacities for agricultural businesses and organizations, including Canopy Farm Management, the Savanna Institute, and Midwestern BioAg. He and his partner Katie also owned and operated a local food business in Spring Green for several years. A firm believer in the need for humanity to integrate itself thoughtfully into its context, Patrick is involved in local land use efforts such as the Lowery Creek Watershed Initiative. Patrick is excited to serve on the board of directors of the Friends of the Lower Wisconsin River as Treasurer and looks forward to helping to protect, preserve, and share this remarkable flowing body of water.

BOARD MEMBER - Don Golembiewski

Don and Irene moved to the banks of the Lower Wisconsin River in Spring Green in 2005 driven by their love of water. An avid paddler and fly fisherman, Don always looks for water-based recreational opportunities. Being supportive of environmental protections, Don has been a member of Trout Unlimited and the Smallmouth Bass Alliance. Both organizations work to maintain a healthy water environment, as does FLOW to benefit everyone. “While fly fishing for wild trout has been my passion for many years, feisty smallmouth bass on a limber fly rod is a blast!” says Don. Being mostly retired means Don can dedicate more time to water-based hobbies and environmental concerns. “Travelling by canoe is still my favorite way to get from one place to another!”


BOARD MEMBER - Jennifer Lanzendorf

Jennie Lanzendorf’s love of the outdoors began at an early age, camping and canoeing in the forests and lakes of central New York state where she grew up. She moved to Wisconsin from Colorado in 2002 to further her career as an accountant, after a decade spent hiking and backpacking the Rocky Mountains. After canoeing the Lower Wisconin River in segments all the way from Sauk Praire to the Mississippi River, she and her wife Charity, along with their two dogs, moved to Spring Green in 2013 in order to be closer to the river, where they spend a lot of time kayaking and canoeing every summer. She is an avid birder, taking an active role in the River Valley Birders, and most recently becoming the coordinator for the Lone Rock roost site of the Ferry Bluff Eagle Council’s annual Bald Eagle roost counts. She has enjoyed participating in FLOW events over the past few years and looks forward to taking a more integral role as a FLOW board member, working to protect and preserve the beautiful Lower Wisconsin River.

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BOARD MEMBER - Susan Graham

Susan Graham was raised in rural Black Earth, recreating often in the driftless area and the Wisconsin River valley. As a lifelong naturalist, Sue is an avid lover of the Wisconsin River and the landscape it carves through. Whether skiing, camping, hiking, biking, paddling, or swimming, she loves nothing more than immersing herself in the quiet of natural environments. During her career with the Wisconsin DNR, Sue took great pride in helping individuals, governmental partners and local lake organizations understand inland lake water quality and determine the most effective approaches to protect and improve Wisconsin's beautiful, sparkling waters. Sue looks forward to meeting many other lovers of the riverway, and inspiring new people to join those ranks so we can work together to protect, in partnership, our legacy of public waters. Susan is recently retired and lives in Madison.

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