Impacts of Climate Change on Water Resources in Idaho Prepared by Zion Klos PhD Student, College of Natural Resources 920-883-8617 …feel.

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Presentation transcript:

Impacts of Climate Change on Water Resources in Idaho Prepared by Zion Klos PhD Student, College of Natural Resources …feel free to or call me with questions!

Idaho’s climate is changing… NCDC

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

Observed Precipitation Changes NCDC

Precipitation Intensity Analysis by Troy Magney

Precipitation: Future Predictions Precipitation: vs 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: /2008JCLI

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

Observed Snowpack Changes NCDC

April 1 st Snowpack Mote et al., Declining mountain snowpack in western N. America. Bull. Am. Met. Soc. = decrease = increase

Benton Spring Snow Course elev m (4920 ft) Analysis by Ryan Niemeyer

Future Predictions for Snow vs. Rain

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

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

USGS Statewide Streamflow Trends

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):

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

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

Analysis by Stephen Gillis Stream Temperature

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

Drought: conceptualized through the Climatic Water Balance

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!