The California Department of Water Resources (DWR) and the US Army Corps of Engineers, Sacramento District (Corps), conducted a multi-year study—the Central Valley Hydrology Study (CVHS)—to update flood hazard assessment of the Central Valley. The study included developing flow-frequency and stage-frequency curves at over 200 locations (analysis or index points) in the Sacramento and San Joaquin river basins. The study applied
computer programs HEC-HMS, HEC-ResSim, HEC-RAS, HECDSSVue, and PeakFQ. In early phases of the CVHS, the study team used Excel spreadsheets to review model results, extract volumes and maximums from time series data, and complete simple arithmetic. The study’s monumental amount of data and information necessitated a more efficient method for processing model results. Ford Engineers, under contract to the Corps, designed and developed a software
tool called the Information Processing and Synthesis Tool (IPAST). This white paper provides an overview of the design, development, and use of IPAST.
IPAST is available on www.cvhydrology.org (username: CVHS_GEN password: featherriver)