Name: Reduced Snowpack (UW CIG)

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Description: April 1st snowpack is used as an indicator for the amount of stored water that becomes available during the melt season. A decrease in April 1st snowpack indicates that less stored water will be available to supply streams, soil, and reservoirs during the melt season. Brown areas represent a decrease in future snowpack. Values shown are the median of multiple climate model projections. A widespread decrease in April 1st snowpack is expected across Washington, with larger decreases at lower elevations of the Olympic and Cascade mountains. Potential Impacts ··· Economic Development: Reductions in snowpack are expected to decrease opportunities for winter outdoor recreation and shorten the winter recreation season, with adverse effects on the economy and character of some communities. Warm season outdoor recreation opportunities may increase, shifting tourism from one recreation sector to another and into different seasons. Transportation: Reductions in snowpack have the potential to reduce snow-related road maintenance, road closures, and transportation delays. However, as more cold-season precipitation falls as rain rather than snow, transportation routes in mountainous areas may experience more damage from heavier winter rainfall and associated flooding, erosion, and washouts. Water Resources: Reduced snowpack and more winter rain is expected to increase water availability in winter for multiple uses including drinking water and hydropower generation, and decrease water availability in late spring and summer when demand is also expected to increase. Zoning: Reductions in snowpack are expected to decrease opportunities for winter outdoor recreation and shorten the winter recreation season with adverse effects on the economy and character of some communities. Warm season outdoor recreation opportunities are expected to increase, shifting tourism revenue from one recreation sector to another.

Service Item Id: 8ad33bcb2f1e4f70893cb0771becf168

Copyright Text: Raymond, C., M. Rogers, 2022. Climate Mapping for a Resilient Washington. Prepared by the Climate Impacts Group, University of Washington, Seattle and Research Data & Computing Services, University of Idaho, Moscow.

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