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Name: (DRAFT) - Climate Stress Summary By Subwatershed
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Description: (DRAFT) - Seven climate stress variables were summarized by subwatershed. Thresholds were then assigned to each of the variables, with the variables given a value of 1 if they passed the threshold, and 0 otherwise:
Absolute change in length-weighted number of winter floods > 4;
Percent change in length-weighted 25-year flood > 25;
Percent change in length-weighted decadal low flow > 25;
Percent change in snow water equivalent > 25;
Percent change in snow residence time > 25;
Percent change in 90th percentile number of summer dry days > 25;
Historical (1993-2011) stream temperature > 18 °C (i.e., above 20 °C with a 2 °C temperature increase);
These values were summed, then divided by the number of variables with data in that subwatershed, to identify the percentage of variables with projected changes over the thresholds.
Low: < 25%;
Medium: >= 25, < 50%;
High: >50%;
All future data are for the time period 2070-2099, using RCP 8.5 (https://www.globalchange.gov/browse/multimedia/emissions-concentrations-and-temperature-projections), The input layers used for the summaries include the Streamflow Metrics dataset (https://storymaps.arcgis.com/stories/6a6be7d624db41638a24b659305af522), National Forest Climate Change Maps (https://www.fs.usda.gov/rm/boise/AWAE/projects/national-forest-climate-change-maps.html), and the NorWeST Stream Temperature dataset (https://www.fs.usda.gov/rm/boise/AWAE/projects/NorWeST.html).
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