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Hydrologic Vulnerabilities and Risk in the San Jose Watershed R.D. (Dan) Moore PhD PGeo 1 Georg Jost PhD 1 Russell Smith PhD 2 1 Departments of Geography.

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Presentation on theme: "Hydrologic Vulnerabilities and Risk in the San Jose Watershed R.D. (Dan) Moore PhD PGeo 1 Georg Jost PhD 1 Russell Smith PhD 2 1 Departments of Geography."— Presentation transcript:

1 Hydrologic Vulnerabilities and Risk in the San Jose Watershed R.D. (Dan) Moore PhD PGeo 1 Georg Jost PhD 1 Russell Smith PhD 2 1 Departments of Geography and Forest Resources Management The University of British Columbia 2 WaterSmith Consulting

2 Vulnerabilities (1) complex hydrology – wetlands – evaporation is a significant fraction of precipitation

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5 Vulnerabilities (2) data limitations – limited number of climate stations, snow data – water licenses: measured streamflow less than actual streamflow by an unknown amount

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7 Risks Associated With Climate Change likely decrease in annual flow (but not full consensus among models) changes to timing of runoff – higher flows in winter and early spring – earlier peaks in spring – lower flows through summer/autumn

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11 Take-home messages current water availability not well known water availability in growing season will decrease due to – increased evapotranspiration – earlier snowmelt

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