Newport News Waterworks Impact of Climate Change on Water Supplies of Coastal Communities Brian L. Ramaley, P.E. Director, Newport News Waterworks and President, Association of Metropolitan Water Agencies (AMWA) World Water Week 21 August 2008
Newport News Waterworks
Impact of Climate Change on Water Supplies of Coastal Communities
Brian L. Ramaley, P.E.
Director, Newport News Waterworks and
President, Association of Metropolitan Water Agencies (AMWA)
World Water Week
21 August 2008
Comprises the largest publicly owned U.S. metropolitan water systems
Members provide drinking water to over 127 million people in the U.S.
Focus on the U.S. Congress, the Administration and Management Issues facing metropolitan water suppliers.
New focus: Climate Change and International Outreach and Knowledge Exchange.
Expand and enhance AMWA's value to US metropolitan drinking water utilities through access and engagement with similar metropolitan utilities in other countries. Exchange experience and knowledge with utility managers abroad and to provide opportunities for peer-to-peer exchange of ideas and skills.
International knowledge exchange on climate change matters is of greatest importance.
Month Avg. High Avg. Low Mean Avg. Precip
Jan 47°F 32°F 39°F 4.08 in.
Feb 49°F 34°F 42°F 3.60 in.
Mar 57°F 41°F 49°F 4.73 in.
Apr 66°F 49°F 57°F 3.35 in.
May 73°F 58°F 66°F 4.03 in.
Jun 81°F 67°F 74°F 3.44 in.
Jul 85°F 72°F 79°F 4.86 in.
Aug 84°F 71°F 77°F 4.74 in.
Sep 78°F 65°F 72°F 4.84 in.
Oct 68°F 53°F 61°F 3.45 in.
Nov 60°F 44°F 52°F 3.35 in.
Dec 51°F 36°F 44°F 3.43 in.
Newport News - Location
Brackish Groundwater Desalting
Rain Gauge Locations
Powhatan Hill, 1849-1876
Newport News, 1899-1927
Fort Monroe, 1836-1890
Monthly Rainfall (inches)
Monthly Rainfall Datasets
19th and 20th Century Rainfall Data Show Similar Means and Distributions
Consideration of 19th Century droughts can significantly change evaluations of existing system reliability and future needs.
Recent droughts and storms indicate a return to precipitation conditions in the mid-Atlantic region more like the 1800s than the 1900s.
Are the 1800s a better model for climate change impacts with respect to yield?
Relative Sea Level Rise Along the
East Coast of North America
From Zhang et al. (2004) Climatic Change 64: 41–58.
Sep 18-19, 2003
Reagan Washington National Airport
Chesapeake Inundation Prediction System (CIPS)
Hampton Roads Inundation
Estimates Under Different
Sea Level Rise Scenarios
- height of water
flooding from storm surge effects will
be greater than previously
- smaller storms will have equivalent
destruction potential as larger storms
populations as well as living resources
and coastal environments
From Titus and Wang (2008) EPA.