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ARS Home » Pacific West Area » Boise, Idaho » Northwest Watershed Research Center » Research » Research Project #446274

Research Project: Effects of Changing Snow Fraction on Streamflow in a Mountainous Catchment

Location: Northwest Watershed Research Center

Project Number: 2052-13610-015-006-A
Project Type: Cooperative Agreement

Start Date: May 1, 2024
End Date: Oct 1, 2025

Objective:
Using a multi-decade hydrometeorological dataset from the long-term hydrologic observatory of the Reynolds Creek Experimental Watershed, investigate how the changes in runoff efficiency and snowmelt timing respond to declines in snow fraction over decades.

Approach:
An almost-60-year old dataset from the USDA Agricultural Research Service will be used for modeling of the above metrics in the Cold Regions Hydrological Model (CRHM), a sophisticated platform for modeling cold-weather watersheds. Insight into possible mechanisms driving the relationship will be drawn from a sensitivity analysis of snow fraction and relevant variables with available data in CRHM.