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Title: Spatial analysis of precipitation and snow water equivalent extremes for the Columbia River Basin
Authors: Skahill, Brian E. (Brian Edward)
Duren, Angela M.
Cunha, Luciana.
Bahner, Chris.
Keywords: Columbia River Watershed
Hydrologic models
Precipitation (Meteorology)
Publisher: Coastal and Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/CHL TR-20-10
Abstract: Recent advances in the spatial statistics of extremes and model calibration were applied to develop and deliver areal-exceedance estimates for precipitation (PREC), by season and duration, and snow water equivalent (SWE), by cool season month and for the water year, for 758 delineated sub-basins of the Columbia River Basin (CRB), which correspond to a new CRB hydrology model watershed delineation. Understanding that future US Army Corps of Engineers, Northwestern Division, mission requirements may change, project execution also included the development and delivery of an application guidance document to credibly compute areal-exceedance estimates, including uncertainty, for PREC or SWE for any arbitrary area within the CRB. R, a free software environment for statistical computing and graphics (, and QGIS, a free and open source geographic information system (, were the primary tools used for product development and delivery. The following R software packages were primarily used during project execution: evd, Glmnet, maps, raster, rgdal, SDMTools, sp, and SpatialExtremes.
Description: Technical Report
Gov't Doc #: ERDC/CHL TR-20-10
Rights: Approved for Public Release; Distribution is Unlimited
Size: 73 pages / 17.56 MB
Types of Materials: PDF
Appears in Collections:Technical Report

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