Focus on Climate Change Implications for Water Supplies

Session Description

This session will focus on the effects of enhanced climate change on water supplies. Throughout the world, increased climatic variability has exacerbated floods and droughts. All regions of the world show an overall net negative impact of climate change on water resources and freshwater ecosystems. Areas in which runoff is projected to decline are likely to face a reduction in the value of the services provided by water resources. The beneficial impacts of increased annual runoff in other areas are likely to be tempered in some areas by negative effects of increased precipitation variability and seasonal runoff shifts on water supply, water quality and flood risks (Intergovernmental Panel on Climate Change [IPCC], 2007).

The years 2004 and 2007 marked two of the earliest spring melts on record in the western United States, and 2007 was one of the driest years on record in California. Glaciers are disappearing across the West, and Glacier National Park in Montana may have no glaciers by 2030. Warming temperatures and corresponding shifts from solid to liquid precipitation have profound implications for water supplies and management (

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- Moderator (click to collapse)

Kellogg Schwab

Kellogg Schwab is a Professor in the Bloomberg School of Public Health’s Department of Environmental Health Sciences as well as Director of both The Johns Hopkins University (JHU) Global Water Program (GWP) and the JHU Center for Water and Health. The GWP integrates Hopkins researchers from public health, engineering, behavior, policy, and economic disciplines to address the critical triangle of water, food, and energy with the goal of achieving sustainable, scalable solutions for disparate water needs both internationally and domestically.

Dr. Schwab’s research focuses on environmental microbiology and engineering with an emphasis on the fate and transport of pathogenic microorganisms in water, food, and the environment. His current research projects involve improving environmental detection methods for noroviruses. He is also investigating how important human pathogens are transported through environmental media (water, air, and food).


Dr. Schwab has developed and participated in multiple research projects designed to evaluate the public health impacts of improving water access and potable water quality and the effectiveness of point-of-use water treatment. Recent international work has focused on developing field-portable microbial and chemical laboratories that facilitate evidence-based assessments of the point-of-use and community-level water treatment systems providing potable water to individuals in low-income countries.


Ph.D., Public Health, University of North Carolina, 1995
M.S., Public Health, University of North Carolina, 1991
B.S., Biology, University of North Carolina, 1987


Speaker's slides

Slides are attached in pdf.