Water Stewardship Information Sources
| ID | 2173 |
|---|---|
| Citation | Kang, D. H., Gao, H., Shi, X., Islam, S. U. and Déry, S. J., 2016: Impacts of a rapidly declining mountain snowpack on streamflow timing in Canada's Fraser River Basin, Scientific Reports, 6, 19299. |
| Organization | University of Northern British Columbia; Texas A&M; CSIRO Land and Water; NASA Goddard Space Flight Center |
| URL | https://www.nature.com/articles/srep19299 |
| Abstract/Description or Keywords | With its headwaters in the water towers of the western Cordillera of North America, the Fraser River is one of the continent’s mightiest rivers by annual flows, supplies vital freshwater resources to populous downstream locations, and sustains the world’s largest stocks of sockeye salmon along with four other salmon species. Here we show the Variable Infiltration Capacity (VIC) model’s ability to reproduce accurately observed trends in daily streamflow for the Fraser River’s main stem and six of its major tributaries over 1949-2006 when air temperatures rose by 1.4_°C while annual precipitation amounts remained stable. Rapidly declining mountain snowpacks and earlier melt onsets result in a 10-day advance of the Fraser River’s spring freshet with subsequent reductions in summer flows when up-river salmon migrations occur. Identification of the sub-basins driving the Fraser River’s most significant changes provides a measure of seasonal predictability of future floods or droughts in a changing climate. Climate and Earth system modelling; Cryospheric science; Hydrology |
| Information Type | Article |
| Regional Watershed | Fraser River |
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| Contact Name | Stephen J. Dery |
| Contact Email | [email protected] |