KDHE Confirmed Zebra Mussel Waterbodies Lake/Reservoir Name Month/Year Confirmed Stream/River Name Month/Year Confirmed El Dorado Lake August 2003 Missouri River near Kansas City, Kansas May 2001 Cheney Reservoir August 2004 Walnut River near Gordon August 2004 Winfield City Lake December 2006 Walnut River near Ark City November 2005 Perry Lake October 2007 Kansas River near Lawrence September 2009 Lake Afton July 2008 Kansas River near Desoto September 2009 Marion Lake July 2008 Ninnescah River near Belle Plaine September 2009 Wilson Lake October 2009 Kansas River near Lecompton August 2011 Milford Reservoir November 2009 Kansas River near Topeka May 2012 Council Grove City Lake June 2010 Kansas River near Wamego June 2012 Jeffery Energy Center Lakes May 2011 Walnut River near El Dorado July 2013 Council Grove Reservoir June 2011 Cottonwood River near Emporia August 2014 Melvern Reservoir June 2011 Neosho River near Neosho Rapids August 2014 Kanopolis Lake October 2011 Neosho River near Leroy August 2014 Coffey County Lake (Wolf Creek Lake) July 2012 Marais Des Cygnes River at Ottawa August 2015 John Redmond Reservoir August 2012 Neosho River near Humboldt September 2016 Chase State Fishing Lake September 2012 Marais Des Cygnes River at MO State Line June 2017 Wyandotte County Lake October 2012 Confirmed: Adult or juvenile mussels have been discovered (live or expired) in Lake Shawnee August 2013 waterbody for the first time and positively identified by eyesight. Glen Elder Reservoir (Waconda Lake) September 2013 Lake Wabunsee September 2013 Threatened: Waterbody at high risk to become infested with zebra mussels via the dispersal (passive or active transport) of the zebra mussel veliger (pre-shell Clinton Lake October 2013 microscopic larval stage). Pomona Lake October 2014 Lake Miola- Paola May 2015 California Department of Fish and Wildlife Wellington City Lake June 2015 Hillsdale Lake June 2016 Cedar Bluff Lake August 2016 Osage State Fishing Lake April 2017 Tuttle Creek Lake August 2017 Veliger Geary State Fishing Lake December 2017 Lyon County State Fishing Lake July 2019 Revised July 2019 .