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Impacts of Climate Change on Water Resources in Idaho

Impacts of Climate Change on Water Resources in Idaho. Prepared by Zion Klos PhD Student, College of Natural Resources zion@uidaho.edu 920-883-8617 …feel free to e-mail or call me with questions!. Idaho ’ s climate is changing…. NCDC. Outline.

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Impacts of Climate Change on Water Resources in Idaho

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  1. Impacts of Climate Change on Water Resources in Idaho Prepared by Zion Klos PhD Student, College of Natural Resources zion@uidaho.edu 920-883-8617 …feel free to e-mail or call me with questions!

  2. Idaho’s climate is changing… NCDC

  3. Outline • Observed (historic) and/or future predictions for changes in: • Precipitation • Snowpack • Streamflow • Stream temperature • Drought

  4. Observed Precipitation Changes NCDC

  5. Precipitation Intensity Analysis by Troy Magney

  6. Precipitation: Future Predictions Precipitation: 2090 - 2099 vs. 1990 - 1999 Salathé Jr, E P, R Steed, C F Mass, and P H Zahn. "A High-Resolution Climate Model for the US Pacific Northwest: Mesoscale Feedbacks and Local Responses to Climate Change." Journal of Climate 21, no. 21 (2008): doi:10.1175/2008JCLI2090.1.

  7. Outline • Observed (historic) and/or future predictions for changes in: • Precipitation • Snowpack • Streamflow • Stream temperature • Drought

  8. Observed Snowpack Changes NCDC

  9. = decrease = increase April 1st Snowpack1950-1997 Mote et al., 2005. Declining mountain snowpack in western N. America. Bull. Am. Met. Soc.

  10. Benton Spring Snow Courseelev. 1500 m (4920 ft) Analysis by Ryan Niemeyer

  11. Future Predictions for Snow vs. Rain

  12. Future Predictions for Snow vs. Rain

  13. Outline • Observed (historic) and/or future predictions for changes in: • Precipitation • Snowpack • Streamflow • Stream temperature • Drought

  14. Statewide Streamflow Trends Unregulated streams with at least 40 years of continuous stream discharge information - 25 stations (as of FY06) Source of Funding State/Federal COOP – 9 Corp of Engineers – 6 USGS NSIP – 4 Other Funding – 6 Discontinued in FY05 – 1 Courtesy of Greg Clark (USGS)

  15. Statewide Streamflow Trends USGS

  16. Onset of Streamflow Stewart, I T, D R Cayan, and M D Dettinger. "Changes Toward Earlier Streamflow Timing Across Western North America." Journal of Climate 18, no. 8 (2005): 1136-1155.

  17. Earlier by 0-4 days (18 sites) Earlier by 5-9 days (6 sites) Earlier by 10 days or more (2 sites) Midpoint of Annual Streamflow Runoff Based on averagepre- and post-1980 data Courtesy of Greg Clark (USGS)

  18. Outline • Observed (historic) and/or future predictions for changes in: • Precipitation • Snowpack • Streamflow • Stream temperature • Drought

  19. Stream Temperature Analysis by Stephen Gillis

  20. Outline • Observed (historic) and/or future predictions for changes in: • Precipitation • Snowpack • Streamflow • Stream temperature • Drought

  21. Drought: conceptualized through the Climatic Water Balance

  22. Anyways, hope you’ll find this information useful! Also, apologies if it’s too much doom and gloom… But hey, who doesn't love some nice, warm weather!

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