Figure 24.12

University of Washington Climate Impacts Group, U.S. Global Change Research Program USGCRP, Washington State Department of Health
Natalie Bennett, Joseph H. Casola, Sheryl Howe

This figure appears in chapter 24 of the Impacts, Risks, and Adaptation in the United States: The Fourth National Climate Assessment, Volume II report.

The map shows public water systems in Washington that are single source, meaning they lack a backup supply, and service at least 25 people per day or have 15 or more connections. Smaller public water systems exist but are not shown. For operators of single source systems, it will likely be particularly difficult to deal with climate-related disruptions such as flooding, drought, and saltwater intrusion. Approximate well depth is indicated by color; shallower wells (less than 100 feet in blue and orange) are projected to be more vulnerable to impacts, although aquifer type also influences vulnerability. Although similar impacts will likely occur in Oregon and Idaho, the data are not readily available to assess at a statewide level. Source: Washington Department of Health.

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This figure was created on July 17, 2017.

This figure was submitted on December 03, 2018.

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