Harry V. Leland is born in Baltimore, Maryland as the eldest son of Rev. Harry Valentine Leland and Edna Lesher Leland.
Harry V. Leland receives a Bachelor of Arts in Zoology from the University of California, Riverside.
Harry V. Leland marries Gretchen Goldman. Together, they have two children, Katherine Grace and Edward Harry, born while Harry is in graduate school.
Harry V. Leland receives a Master of Arts in Zoology from Southern Illinois University in Carbondale, Illinois.
Harry V. Leland receives a Doctor of Philosophy in Natural Resources from the University of Michigan in Ann Arbor, Michigan.
Dr. Leland becomes an Assistant Professor of Environmental Biology at the University of Illinois-Urbana. There, he initiates a decade-long research program on the Great Lakes.
Dr. Leland initiates classroom and field instruction in Limnology at the University of Illinois.
Dr. Leland joins the research committee of the Water Pollution Control Federation, and is a founding member of the Society of Environmental Toxicology and Chemistry.
Dr. Leland is appointed Research Biologist in the Water Resources Division of the U.S. Geological Survey (USGS) in Menlo Park, California.
Dr. Leland is assigned Research Advisor for Ecology for the Water Resources Division of the USGS.
Dr. Leland receives a Special Achievement Award from the USGS.
Dr. Leland serves for four years on the the Inter-Agency Toxicity Evaluation Committee for the San Francisco Bay and Delta Governments.
Dr. Leland is assigned the duties of Program Director of the National Water-Quality Assessment Program (USGS).
Dr. Leland receives his second Special Achievement Award from the USGS.
Dr. Leland transfers to Boulder, Colorado and continues until retirement with his responsibilities as Program Director of the National Water-Quality Assessment Program (USGS).
Dr. Leland receives an Outstanding Alumnus Award from the University of California, Riverside.
Dr. Leland retires from the U.S. Geological Survey.
Dr. Leland serves as a Volunteer Naturalist with the Open Space and Mountain Parks District in Boulder, Colorado, through 2009.