François-Alphonse Forel, Swiss limnologist and hydrologist (d. 1912)
François-Alphonse Forel (February 2, 1841 – August 7, 1912) was a Swiss physician and scientist who pioneered the study of lakes, and is thus considered the founder, and the Father of limnology. Limnology is the study of bodies of fresh water and their biological, chemical, and physical features.