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Title: Flows of the future—How will climate change affect streamflows in the Pacific Northwest?

Author: Watts, Andrea; Grant, Gordon; Safeeq, Mohammad.;

Date: 2016

Source: Science Findings 187. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 5 p.

Publication Series: Science Findings

Description: Much of the water supply in the Pacific Northwest originates in national forests. It sustains the region’s aquatic ecosystems, agriculture, hydroelectric power, and community water supplies.
Understanding how climate change will affect water supply is one of the most pressing issues of our time. Substantial changes are projected in the types of precipitation (rain vs. snow) that will fall in the region, as are smaller, but potentially important, changes in the total annual precipitation. Combined with earlier snowmelt, these changes could cause decreased summer streamflows, and some high-elevation streams may dry up.
These are the general projections, but each watershed has geological characteristics that will influence its response to changes in the type, timing, and amount of precipitation. Land managers want to know how specific watersheds are likely to respond, so scientists at the Pacific Northwest Research Station developed streamflow sensitivity maps for Oregon and Washington. Land managers across federal, state, and local governments; tribes; and private landowners now can see which watersheds have a higher risk of flooding in the future and which may be more sensitive to summer drought. With this information, land managers can develop tailored management plans for specific watersheds to adapt to the effects of climate change on streamflow.

Keywords: climate change, hydrology, geology, Oregon, Washington

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
  • You may send email to pnw_pnwpubs@fs.fed.us to request a hard copy of this publication. (Please specify exactly which publication you are requesting and your mailing address.)

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Citation:


Watts, Andrea; Grant, Gordon; Safeeq, Mohammad. 2016. Flows of the future—How will climate change affect streamflows in the Pacific Northwest? Science Findings 187. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 5 p.

 


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