HAPPENIN’ OTSEGO for WEDNESDAY, JUNE 21 Learn ‘What Is A Healthy Lake’ With Dr. Kiyoko Yokota BE INFORMED – 7-8 p.m. Associate Professor of Limnology Dr. Kiyoko Yokota presents “What Is a Healthy Lake?” The lecture discusses basic lake biology with a focus on the physical and biological factors that determine the quality of water found in a water body. Free, open to all. Community Room, Clark Sports Center, Cooperstown. (607) 547-4488 or visit occainfo.org/calendar/be-informed-lecture-series-what-is-a-healthy-lake/ BLOOD DRIVE – 9 a.m. to 2 p.m. Save up to three lives with the American Red Cross. St. Mary’s Roman Catholic Church, 31 Elm Street, Cooperstown.…